WO2024259693A1 - 储能装置 - Google Patents

储能装置 Download PDF

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Publication number
WO2024259693A1
WO2024259693A1 PCT/CN2023/101944 CN2023101944W WO2024259693A1 WO 2024259693 A1 WO2024259693 A1 WO 2024259693A1 CN 2023101944 W CN2023101944 W CN 2023101944W WO 2024259693 A1 WO2024259693 A1 WO 2024259693A1
Authority
WO
WIPO (PCT)
Prior art keywords
battery
storage device
energy storage
along
box
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2023/101944
Other languages
English (en)
French (fr)
Inventor
吴凯
张雪芳
何双江
许金梅
李忠宏
苏海彬
罗广生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Contemporary Amperex Technology Co Ltd
Original Assignee
Contemporary Amperex Technology Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Contemporary Amperex Technology Co Ltd filed Critical Contemporary Amperex Technology Co Ltd
Priority to EP23941965.8A priority Critical patent/EP4730502A4/en
Priority to JP2025534877A priority patent/JP2025539637A/ja
Priority to CN202380016970.8A priority patent/CN119497927A/zh
Priority to PCT/CN2023/101944 priority patent/WO2024259693A1/zh
Priority to KR1020257019330A priority patent/KR20250109214A/ko
Priority to PCT/CN2024/100748 priority patent/WO2024260457A1/zh
Priority to KR1020257019323A priority patent/KR20250100757A/ko
Priority to EP24825343.7A priority patent/EP4730503A1/en
Priority to JP2025534880A priority patent/JP2025540865A/ja
Priority to EP24825344.5A priority patent/EP4730522A1/en
Priority to KR1020257019366A priority patent/KR20250109217A/ko
Priority to PCT/CN2024/100747 priority patent/WO2024260456A1/zh
Priority to JP2025534868A priority patent/JP2026500016A/ja
Publication of WO2024259693A1 publication Critical patent/WO2024259693A1/zh
Priority to US19/280,162 priority patent/US20250357593A1/en
Priority to US19/280,150 priority patent/US20250357592A1/en
Priority to US19/280,209 priority patent/US20250357594A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/052—Li-accumulators
    • H01M10/0525—Rocking-chair batteries, i.e. batteries with lithium insertion or intercalation in both electrodes; Lithium-ion batteries
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/054—Accumulators with insertion or intercalation of metals other than lithium, e.g. with magnesium or aluminium
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/50—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese
    • H01M4/505—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of manganese of mixed oxides or hydroxides containing manganese for inserting or intercalating light metals, e.g. LiMn2O4 or LiMn2OxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/48—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides
    • H01M4/52—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron
    • H01M4/525—Selection of substances as active materials, active masses, active liquids of inorganic oxides or hydroxides of nickel, cobalt or iron of mixed oxides or hydroxides containing iron, cobalt or nickel for inserting or intercalating light metals, e.g. LiNiO2, LiCoO2 or LiCoOxFy
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/36—Selection of substances as active materials, active masses, active liquids
    • H01M4/58—Selection of substances as active materials, active masses, active liquids of inorganic compounds other than oxides or hydroxides, e.g. sulfides, selenides, tellurides, halogenides or LiCoFy; of polyanionic structures, e.g. phosphates, silicates or borates
    • H01M4/5825—Oxygenated metallic salts or polyanionic structures, e.g. borates, phosphates, silicates, olivines
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00—Electrodes
    • H01M4/02—Electrodes composed of, or comprising, active material
    • H01M4/62—Selection of inactive substances as ingredients for active masses, e.g. binders, fillers
    • H01M4/628—Inhibitors, e.g. gassing inhibitors, corrosion inhibitors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/251—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for stationary devices, e.g. power plant buffering or backup power supplies
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/296—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by terminals of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/40—Separators; Membranes; Diaphragms; Spacing elements inside cells
    • H01M50/471—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof
    • H01M50/474—Spacing elements inside cells other than separators, membranes or diaphragms; Manufacturing processes thereof characterised by their position inside the cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/547—Terminals characterised by the disposition of the terminals on the cells
    • H01M50/55—Terminals characterised by the disposition of the terminals on the cells on the same side of the cell
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/553—Terminals adapted for prismatic, pouch or rectangular cells
    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/586—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries inside the batteries, e.g. incorrect connections of electrodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/572—Means for preventing undesired use or discharge
    • H01M50/584—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries
    • H01M50/59—Means for preventing undesired use or discharge for preventing incorrect connections inside or outside the batteries characterised by the protection means
    • H01M50/593—Spacers; Insulating plates
    • H—ELECTRICITY
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    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/10—Batteries in stationary systems, e.g. emergency power source in plant
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • the present application relates to the field of energy storage technology, and in particular to an energy storage device.
  • Energy storage devices are devices for storing and transferring electric energy. They can be used in power systems. They can store excess electric energy during off-peak periods to supplement peak periods. Therefore, energy storage devices can store excess power generated by power generation systems and transmit electric energy to the power grid when power generation systems generate less power.
  • An energy storage device generally includes a housing and a plurality of battery cells disposed inside the housing.
  • the plurality of battery cells are connected in series, in parallel or in a mixed connection to store electrical energy.
  • the volume energy density of energy storage devices is relatively low. Therefore, how to improve the volume energy density of energy storage devices is an urgent problem to be solved.
  • the embodiment of the present application provides an energy storage device, which can effectively improve the volume energy density of the energy storage device.
  • An embodiment of the present application provides an energy storage device, including a box body and a plurality of battery cells.
  • the box body has a battery compartment.
  • the plurality of battery cells are accommodated in the battery compartment.
  • the battery cells include a shell and an electrode terminal.
  • the electrode terminal is disposed on the shell.
  • the volume of the battery compartment is V 1
  • the sum of the volumes of the shells of the plurality of battery cells is V 2
  • V 2 /V 1 ⁇ 0.95, so that the volume proportion of all battery cells in the battery compartment is not too large, reducing the assembly accuracy requirements of the energy storage device, and can effectively control the manufacturing cost of the energy storage device within a reasonable range.
  • V 2 /V 1 ⁇ 0.4 so that the volume proportion of all battery cells in the battery compartment is relatively large, thereby improving the space utilization of the battery compartment, which is conducive to improving the volume energy density of the energy storage device.
  • the manufacturing cost of the energy storage device can be controlled at a relatively low level, and the volume energy density of the energy storage device can be controlled at a relatively high level.
  • the volume of the shell of each battery cell is V 3
  • V 2 V 3 *N 1 .
  • the volumes of the shells of all battery cells in the battery compartment are equal, and battery cells of the same specification can be selected.
  • it is conducive to improving the assembly efficiency of the energy storage device; on the other hand, it can reduce the probability of space waste caused by different specifications of battery cells in the battery compartment.
  • V 3 /V 1 ⁇ 0.0001 so that the volume of the shell of the battery cell in the battery compartment accounts for a large proportion, and when the volume of the battery compartment is constant, the number of battery cells can be reduced, and the probability of reducing the available effective space due to an excessive number of battery cells is reduced, which is beneficial to improving the volume energy density of the energy storage device;
  • V 3 /V 1 ⁇ 0.00025 so that the volume of the shell of the battery cell in the battery compartment does not account for too large a proportion, reducing the manufacturing difficulty and manufacturing cost of the battery cell.
  • the volume energy density of the energy storage device, the manufacturing difficulty of the battery cell and the economic requirements of the battery cell are taken into consideration, which is conducive to improving the volume energy density of the energy storage device and reducing the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.0026m 3 ⁇ V 3 ⁇ 0.008m 3 is beneficial to further improve the volume energy density of the energy storage device and reduce the manufacturing cost of the battery cell.
  • 0.004 m 3 ⁇ V 3 ⁇ 0.006 m 3 The volume energy density of the energy storage device can be controlled at a relatively high level, and the manufacturing cost of the battery cell can be controlled at a low level.
  • the volume of the box is V, which satisfies: 0.45 ⁇ V 1 /V ⁇ 0.75.
  • V 1 /V ⁇ 0.45 makes the volume of the battery compartment account for a large proportion of the volume of the box, increasing the available effective space in the box, which is conducive to improving the volume energy density of the energy storage device.
  • V 1 /V ⁇ 0.75 makes the volume of the battery compartment not too large, and the energy storage device can reserve more installation space for other components, reducing the difficulty of installing other components.
  • the volume energy density of the energy storage device and the installation convenience requirements of other components of the energy storage device can be taken into consideration.
  • 20m 3 ⁇ V ⁇ 80m 3 20m 3 ⁇ V ⁇ 80m 3 .
  • V ⁇ 20m 3 the volume of the box is larger, which is conducive to achieving the large energy requirement of the energy storage device to store more electric energy;
  • V ⁇ 80m 3 the volume of the box is not too large, which is convenient for handling and transportation of the energy storage device.
  • 35m 3 ⁇ V ⁇ 50m 3 35m 3 ⁇ V ⁇ 50m 3 . This can further take into account the large energy of the energy storage device and the convenience of handling and transporting the energy storage device.
  • the battery compartment contains a plurality of battery cells arranged along the length direction of the box body; along the length direction of the box body, the size of the battery compartment is L 1 , and the sum of the sizes of the shells of the plurality of battery cells arranged in the battery compartment is L 2 , satisfying: 0.6 ⁇ L 2 /L 1 ⁇ 0.95.
  • L 2 /L 1 ⁇ 0.6 so that the shells of the plurality of battery cells arranged along the length direction of the box body account for a relatively large proportion of the size of the shells in the battery compartment along the length direction of the box body, and the space of the battery compartment is fully utilized in the length direction of the box body, and the gap between the shells of two adjacent battery cells in the length direction of the box body is reduced, which is beneficial to increase the volume proportion of the shells of all battery cells in the battery compartment, and is beneficial to increase the volume energy density of the energy storage device.
  • L 2 /L 1 ⁇ 0.95 so that the battery compartment has sufficient installation margins in the length direction of the box body to install a plurality of battery cells, reducing the difficulty of installing the battery cells.
  • the size of the outer shell of each battery cell is L 3
  • the outer shells of multiple battery cells have the same size along the length direction of the box, which can effectively reduce the probability of space waste caused by different sizes of the outer shells of the battery cells along the length direction of the box.
  • multiple battery cells of the same specification can be selected along the length direction of the box. Arranged in the length direction, the assembly efficiency of the energy storage device is improved and the manufacturing cost of the energy storage device is reduced.
  • the size of the battery compartment in the length direction of the box body is constant, the number of battery cells accommodated in the battery compartment along the length direction of the box body can be reduced, and the probability of reducing the available effective space due to too many battery cells is reduced, which is conducive to improving the volume energy density of the energy storage device.
  • L 3 ⁇ 0.17m makes the size of the outer shell of the battery cell along the length direction of the box body larger, which is beneficial to increase the proportion of the size of the outer shell of the battery cell in the battery compartment along the length direction of the box body, and is beneficial to improve the volume energy density of the energy storage device.
  • L 3 ⁇ 0.6m makes the size of the outer shell of the battery cell along the length direction of the box body not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.2 m ⁇ L 3 ⁇ 0.45 m This is beneficial to further improve the volume energy density of the energy storage device and reduce the manufacturing cost of the battery cell.
  • the size of the box is L, which satisfies: 0.65 ⁇ L 1 /L ⁇ 0.95.
  • L 1 /L ⁇ 0.65 makes the size of the battery compartment along the length direction of the box account for a large proportion, and increases the size of the battery compartment along the length direction of the box to provide more space for the battery cells, which is conducive to improving the volume energy density of the energy storage device.
  • L 1 /L ⁇ 0.95 makes the margin of the part of the box not occupied by the battery compartment in the length direction sufficient, so that the box has sufficient structural strength.
  • the requirements of the volume energy density of the energy storage device and the structural strength of the box can be taken into consideration, which is beneficial to improving the volume energy density of the energy storage device and further improving the structural strength of the box.
  • L ⁇ 3m makes the size of the box body along the length direction larger, and the size of the battery compartment along the length direction of the box body can be enlarged, which is beneficial to increase the size proportion of the battery compartment in the box body along the length direction of the box body, and is beneficial to increase the volume energy density of the energy storage device.
  • L ⁇ 9m makes the size of the box body along the length direction not too large, which is convenient for handling and transportation of the energy storage device.
  • 5m ⁇ L ⁇ 7m which can further take into account the volume energy density of the energy storage device and the convenience of handling and transportation of the energy storage device.
  • the battery compartment contains a plurality of battery cells arranged along the width direction of the box body; along the width direction of the box body, the size of the battery compartment is D 1 , and the sum of the sizes of the shells of the plurality of battery cells arranged in the battery compartment is D 2 , satisfying: 0.6 ⁇ D 2 /D 1 ⁇ 0.95.
  • D 2 /D 1 ⁇ 0.6 so that the shells of the plurality of battery cells arranged along the width direction of the box body account for a large proportion of the size in the battery compartment along the width direction of the box body, and the space of the battery compartment is fully utilized in the width direction of the box body, and the gap between the shells of two adjacent battery cells in the width direction of the box body is reduced, which is conducive to increasing the volume proportion of the shells of all battery cells in the battery compartment, and is conducive to increasing the volume energy density of the energy storage device.
  • D 2 /D 1 ⁇ 0.95 so that the battery compartment has sufficient installation margins in the width direction of the box body to install a plurality of battery cells, reducing the difficulty of installing the battery cells.
  • the size of the outer shell of each battery cell is D 3
  • the sizes of the outer shells of multiple battery cells along the width direction of the box are equal, which can effectively reduce the probability of space waste caused by different sizes of the outer shells of the battery cells along the width direction of the box.
  • multiple battery cells of the same specification can be selected and arranged along the width direction of the box, which improves the assembly efficiency of the energy storage device and reduces the manufacturing cost of the energy storage device.
  • D 3 /D 1 ⁇ 0.02 so that the size of the outer shell of the battery cell in the battery compartment along the width direction of the box body accounts for a large proportion.
  • the size of the battery compartment in the width direction of the box body is constant, the number of battery cells accommodated in the battery compartment along the width direction of the box body can be reduced, and the probability of reducing the available effective space due to too many battery cells is reduced, which is conducive to improving the volume energy density of the energy storage device.
  • D 3 /D 1 ⁇ 0.05 so that the size of the outer shell of the battery cell in the battery compartment along the width direction of the box body does not account for too large a proportion, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • D 3 ⁇ 0.04m makes the outer shell of the battery cell larger in the width direction of the box body, which is beneficial to increase the proportion of the outer shell of the battery cell in the battery compartment along the width direction of the box body, and is beneficial to increase the volume energy density of the energy storage device.
  • D 3 ⁇ 0.12m makes the outer shell of the battery cell not too large in the width direction of the box body, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.06m ⁇ D 3 ⁇ 0.08m This is beneficial to further improve the volume energy density of the energy storage device and reduce the manufacturing cost of the battery cell.
  • the size of the box is D, which satisfies: 0.65 ⁇ D 1 /D ⁇ 0.99.
  • D 1 /D ⁇ 0.65 makes the size of the battery compartment along the width direction of the box account for a large proportion, and increases the size of the battery compartment along the width direction of the box to provide more space for the battery cells, which is conducive to improving the volume energy density of the energy storage device.
  • D 1 /D ⁇ 0.95 makes the margin of the part of the box not occupied by the battery compartment in the width direction sufficient, so that the box has sufficient structural strength.
  • the requirements of the volume energy density of the energy storage device and the structural strength of the box can be taken into consideration, which is beneficial to improving the volume energy density of the energy storage device and further improving the structural strength of the box.
  • 1.5m ⁇ D ⁇ 3.5m In some embodiments, 1.5m ⁇ D ⁇ 3.5m.
  • D ⁇ 1.5m makes the size of the box along the width direction larger, and the size of the battery compartment along the width direction of the box can be enlarged, which is beneficial to increase the size proportion of the battery compartment in the box along the width direction of the box, and is beneficial to increase the volume energy density of the energy storage device.
  • L ⁇ D ⁇ 3.5m makes the size of the box along the width direction not too large, which is convenient for handling and transportation of the energy storage device.
  • 2m ⁇ D ⁇ 3m which can further take into account the volume energy density of the energy storage device and the convenience of handling and transportation of the energy storage device.
  • the battery compartment contains a plurality of battery cells arranged along the height direction of the box body; along the height direction of the box body, the size of the battery compartment is H 1 , and the sum of the sizes of the shells of the plurality of battery cells arranged in the battery compartment is H 2 , satisfying: 0.6 ⁇ H 2 /H 1 ⁇ 0.95.
  • H 2 /H 1 ⁇ 0.6 so that the shells of the plurality of battery cells arranged along the height direction of the box body account for a relatively large proportion of the size in the battery compartment along the height direction of the box body, and the space of the battery compartment is fully utilized in the height direction of the box body, and the gap between the shells of two adjacent battery cells in the height direction of the box body is reduced, which is beneficial to increase the volume proportion of the shells of all battery cells in the battery compartment, and is beneficial to increase the volume energy density of the energy storage device.
  • H 2 /H 1 ⁇ 0.95 so that the battery compartment has sufficient installation margins in the height direction of the box body to install a plurality of battery cells, reducing the difficulty of installing the battery cells.
  • the size of the outer shell of each battery cell is H 3
  • the sizes of the outer shells of multiple battery cells along the height direction of the box are equal, which can effectively reduce the probability of space waste caused by different sizes of the outer shells of the battery cells along the height direction of the box.
  • multiple battery cells of the same specification can be selected and arranged along the height direction of the box, which improves the assembly efficiency of the energy storage device and reduces the manufacturing cost of the energy storage device.
  • H 3 /H 1 0.07 ⁇ H 3 /H 1 ⁇ 0.12.
  • H 3 /H 1 ⁇ 0.07, so that the size of the outer shell of the battery cell in the battery compartment along the height direction of the box body accounts for a large proportion.
  • the size of the battery compartment in the height direction of the box body is constant, the number of battery cells accommodated in the battery compartment along the height direction of the box body can be reduced, and the probability of reducing the available effective space due to too many battery cells is reduced, which is conducive to improving the volume energy density of the energy storage device.
  • H 3 /H 1 ⁇ 0.12, so that the size of the outer shell of the battery cell in the battery compartment along the height direction of the box body does not account for too large a proportion, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.08 ⁇ H 3 /H 1 ⁇ 0.1 This is beneficial to further improve the volume energy density of the energy storage device and reduce the manufacturing cost of the battery cell.
  • H 3 ⁇ 0.17m makes the size of the outer shell of the battery cell along the height direction of the box body larger, which is beneficial to increase the proportion of the size of the outer shell of the battery cell in the battery compartment along the height direction of the box body, and is beneficial to improve the volume energy density of the energy storage device.
  • H 3 ⁇ 0.6m makes the size of the outer shell of the battery cell along the height direction of the box body not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.2m ⁇ H 3 ⁇ 0.45m This is beneficial to further improve the volume energy density of the energy storage device and reduce the manufacturing cost of the battery cell.
  • the size of the box is H, which satisfies: 0.55 ⁇ H 1 /H ⁇ 0.85.
  • H 1 /H ⁇ 0.55 makes the size of the battery compartment in the box along the height direction account for a large proportion, and increases the size of the battery compartment in the height direction of the box to provide more space for the battery cells, which is conducive to improving the volume energy density of the energy storage device.
  • H 1 /H ⁇ 0.85 makes the margin of the part of the box not occupied by the battery compartment in the height direction sufficient, so that the box has sufficient structural strength.
  • the requirements of the volume energy density of the energy storage device and the structural strength of the box can be taken into account, which is beneficial to improving the volume energy density of the energy storage device and further improving the structural strength of the box.
  • H ⁇ 1.5m makes the size of the box along the height direction larger, and the size of the battery compartment along the height direction of the box can be enlarged, which is beneficial to increase the size proportion of the battery compartment in the box along the height direction of the box, and is beneficial to increase the volume energy density of the energy storage device.
  • H ⁇ 3.5m makes the size of the box along the height direction not too large, which is convenient for handling and transportation of the energy storage device.
  • 2m ⁇ H ⁇ 3m which can further take into account the volume energy density of the energy storage device and the convenience of handling and transportation of the energy storage device.
  • the battery compartment contains at least one battery, and the battery includes a plurality of battery cells.
  • the plurality of battery cells may be assembled into a battery first, and then the battery may be installed in the battery compartment.
  • the battery composed of a plurality of battery cells is larger in volume, easier to install in the battery compartment, and has high assembly efficiency.
  • the battery compartment contains a plurality of batteries arranged along the length direction of the box; along the length direction of the box, the size of the battery compartment is L 1 , and the sum of the sizes of the plurality of batteries arranged in the battery compartment is L 4 , satisfying: 0.7 ⁇ L 4 /L 1 ⁇ 0.96.
  • the battery compartment contains a plurality of batteries arranged along the length direction of the box, so that the size of a single battery along the length direction of the box is not too large, reducing the difficulty of manufacturing and installing the battery.
  • L 4 /L 1 ⁇ 0.7 so that the plurality of batteries arranged along the length direction of the box account for a large proportion of the size of the battery compartment along the length direction of the box, fully utilizing the space of the battery compartment in the length direction of the box, reducing the gap between two adjacent batteries in the length direction of the box, which is beneficial to increasing the volume proportion of all batteries in the battery compartment, and is beneficial to increasing the volume energy density of the energy storage device.
  • L 4 /L 1 ⁇ 0.96 so that the battery compartment has sufficient installation margin for installing a plurality of batteries in the length direction of the box, reducing the difficulty of installing the battery.
  • the size of each battery is L 5
  • the sizes of multiple batteries along the length direction of the box are equal, which can effectively reduce the probability of space waste caused by different sizes of batteries along the length direction of the box.
  • multiple batteries of the same specification can be selected and arranged along the length direction of the box, thereby improving the assembly efficiency of the energy storage device and reducing the manufacturing cost of the energy storage device.
  • 1m ⁇ L 5 ⁇ 1.5m, 2 ⁇ N 5 ⁇ 6 In this way, along the length direction of the box, the size of each battery is larger, and the number of batteries is not too large, which can reduce the space occupied by other components in the battery except the battery cells, and is conducive to increasing the size proportion of the multiple batteries arranged along the length direction of the box in the battery compartment along the length direction of the box.
  • the battery compartment only accommodates one battery, the size of the battery compartment is L 1 , and the size of the battery is L 5 , satisfying: 0.8 ⁇ L 5 /L 1 ⁇ 0.99.
  • the battery compartment only accommodates one battery along the length direction of the box, which is beneficial to improving the utilization rate of the space of the battery compartment along the length direction of the box.
  • L 5 /L 1 ⁇ 0.8 so that the size of the battery in the battery compartment along the length direction of the box accounts for a large proportion, and the space of the battery compartment is fully utilized in the length direction of the box, which is beneficial to increasing the volume proportion of all batteries in the battery compartment, and is beneficial to improving the volume energy density of the energy storage device.
  • L 5 /L 1 ⁇ 0.99, so that the battery compartment has sufficient installation margin for installing the battery in the length direction of the box, reducing the difficulty of battery installation.
  • L 5 ⁇ 4m makes the size of the battery along the length direction of the box larger, and more battery cells can be arranged in the battery along the length direction of the box, which can meet the large energy requirements of the energy storage device;
  • L 5 ⁇ 8m makes the size of the battery along the length direction of the box not too large, reducing the difficulty of manufacturing and installing the battery.
  • 5.5 m ⁇ L 5 ⁇ 6.8 m which takes into account the large energy of the energy storage device and the economic efficiency and installation convenience of the battery.
  • the battery compartment contains a plurality of batteries arranged along the width direction of the box; along the width direction of the box, the size of the battery compartment is D 1 , and the sum of the sizes of the plurality of batteries arranged in the battery compartment is D 4 , satisfying: 0.7 ⁇ D 4 /D 1 ⁇ 0.96.
  • the battery compartment contains a plurality of batteries arranged along the width direction of the box, so that the size of a single battery along the width direction of the box is not too large, reducing the difficulty of manufacturing and installing the battery.
  • D 4 /D 1 ⁇ 0.7 so that the plurality of batteries arranged along the width direction of the box account for a large proportion of the size of the battery compartment along the width direction of the box, fully utilizing the space of the battery compartment in the width direction of the box, reducing the gap between two adjacent batteries in the width direction of the box, which is beneficial to increasing the volume proportion of all batteries in the battery compartment, and is beneficial to increasing the volume energy density of the energy storage device.
  • D 4 /D 1 ⁇ 0.96 so that the battery compartment has sufficient installation margin for installing a plurality of batteries in the width direction of the box, reducing the difficulty of installing the battery.
  • the volume energy density of the energy storage device and the convenience of installing the battery in the width direction of the box are taken into account, which is beneficial to improving the volume energy density of the energy storage device and further reducing the difficulty of installing the battery in the width direction of the box.
  • the size of each battery is D 5
  • the sizes of multiple batteries along the width direction of the box are equal, which can effectively reduce the probability of space waste caused by different sizes of batteries along the width direction of the box.
  • multiple batteries of the same specification can be selected and arranged along the width direction of the box, thereby improving the assembly efficiency of the energy storage device and reducing the manufacturing cost of the energy storage device.
  • the size of each battery is larger, and the number of batteries is not too large, which can reduce the space occupied by other components of the battery except the battery cells, and is conducive to increasing the size proportion of the multiple batteries arranged along the width direction of the box in the battery compartment along the width direction of the box.
  • the battery compartment only accommodates one battery, the size of the battery compartment is D 1 , and the size of the battery is D 5 , satisfying: 0.8 ⁇ D 5 /D 1 ⁇ 0.99.
  • the battery compartment only accommodates one battery along the width direction of the box, which is beneficial to improving the utilization rate of the space of the battery compartment along the width direction of the box.
  • D 5 /D 1 ⁇ 0.8, so that the size of the battery in the battery compartment along the width direction of the box accounts for a large proportion, and the space of the battery compartment is fully utilized in the width direction of the box, which is beneficial to increasing the volume proportion of all batteries in the battery compartment, and is beneficial to improving the volume energy density of the energy storage device.
  • D 5 /D 1 ⁇ 0.99, so that the battery compartment has sufficient installation margin for installing the battery in the width direction of the box, reducing the difficulty of battery installation.
  • the volume energy density of the energy storage device and the convenience of installing the battery in the width direction of the box are taken into account, which is conducive to improving the volume energy density of the energy storage device and further reducing the difficulty of installing the battery in the width direction of the box.
  • D 5 ⁇ 1.5m makes the battery larger in the width direction of the box, and more battery cells can be arranged in the battery along the width direction of the box, which can meet the large energy requirements of the energy storage device; D 5 ⁇ 2.5m makes the battery smaller in the width direction of the box, reducing the difficulty of manufacturing and installing the battery.
  • 1.7 m ⁇ D 5 ⁇ 2.3 m This takes into account the large energy of the energy storage device and the economic efficiency and installation convenience of the battery.
  • the battery compartment contains a plurality of batteries arranged in the height direction of the box; in the height direction of the box, the size of the battery compartment is H 1 , and the sum of the sizes of the plurality of batteries arranged in the battery compartment is H 4 , satisfying: 0.6 ⁇ H 4 /H 1 ⁇ 0.99.
  • the battery compartment contains a plurality of batteries arranged in the height direction of the box, so that the size of a single battery in the height direction of the box is not too large, reducing the difficulty of manufacturing and installing the battery.
  • H 4 /H 1 ⁇ 0.6 so that the plurality of batteries arranged in the height direction of the box account for a large proportion of the size in the battery compartment in the height direction of the box, fully utilizing the space of the battery compartment in the height direction of the box, reducing the gap between two adjacent batteries in the height direction of the box, which is beneficial to increasing the volume proportion of all batteries in the battery compartment, and is beneficial to increasing the volume energy density of the energy storage device.
  • the size of each battery is H 5
  • the sizes of multiple batteries along the height direction of the box are equal, which can effectively reduce the probability of space waste caused by different sizes of batteries along the height direction of the box.
  • multiple batteries of the same specification can be selected and arranged along the height direction of the box, thereby improving the assembly efficiency of the energy storage device and reducing the manufacturing cost of the energy storage device.
  • the size of each battery is larger, and the number of batteries is not too large, which can reduce the space occupied by other components of the battery except the battery cells, and is conducive to increasing the size proportion of the multiple batteries arranged along the height direction of the box body in the battery compartment along the height direction of the box body.
  • the battery compartment only accommodates one battery
  • the size of the battery compartment is H 1
  • the size of the battery is H 5
  • the battery compartment only accommodates one battery along the height direction of the box, which is conducive to improving the utilization rate of the space of the battery compartment along the height direction of the box.
  • H 5 /H 1 ⁇ 0.8 makes the size of the battery in the battery compartment along the height direction of the box account for a large proportion, and fully utilizes the space of the battery compartment in the height direction of the box, which is conducive to increasing the volume proportion of all batteries in the battery compartment and the volume energy density of the energy storage device.
  • H 5 /H 1 ⁇ 0.99 makes the battery compartment have sufficient installation margin for installing batteries in the height direction of the box, reducing the difficulty of battery installation.
  • the volume energy density of the energy storage device and the convenience of installing the battery in the height direction of the box are taken into account, which is beneficial to improving the volume energy density of the energy storage device and further reducing the difficulty of installing the battery in the height direction of the box.
  • H 5 ⁇ 1.5m makes the size of the battery along the height direction of the box larger, and the size of the battery cell in the battery along the height direction of the box larger, which can meet the large energy requirement of the energy storage device; H 5 ⁇ 2.5m makes the size of the battery along the height direction of the box not too large, reducing the difficulty of manufacturing and installing the battery.
  • 1.7 m ⁇ H 5 ⁇ 2.3 m This takes into account the large energy of the energy storage device and the economic efficiency and installation convenience of the battery.
  • the battery compartment includes a plurality of sub-compartments, which are arranged along the length of the box body, and each sub-compartment contains at least one battery.
  • the battery compartment is divided into a plurality of sub-compartments, each of which can contain a battery, so that the batteries can be more regularly contained in the battery compartment, making it easier to install the batteries.
  • the volume of the sub-compartment is V 4
  • the sum of the volumes of the batteries in the sub-compartment is V 5 , which satisfies; 0.75 ⁇ V 5 /V 4 ⁇ 0.95.
  • V 5 /V 4 ⁇ 0.95 so that the volume of all batteries in the sub-compartment accounts for not too large, reducing the assembly accuracy requirements for the batteries installed in the sub-compartment, and can effectively control the manufacturing cost of the energy storage device within a reasonable range.
  • the sub-compartment only accommodates one battery, which is beneficial to increase the proportion of the battery in the sub-compartment along the length direction of the box body, and is beneficial to improve the utilization rate of the space of the sub-compartment along the length direction of the box body.
  • the size of the sub-compartment is L 6
  • the size of the battery is L 5 , which satisfies: 0.85 ⁇ L 5 /L 6 ⁇ 0.99.
  • L 5 /L 6 ⁇ 0.85 so that the size of the battery in the sub-compartment along the length direction of the box is relatively large, and the space of the sub-compartment is fully utilized in the length direction of the box, which is conducive to increasing the volume ratio of all batteries in the sub-compartment and improving the volume energy density of the energy storage device.
  • L 5 /L 6 ⁇ 0.99, so that the sub-compartment has sufficient installation margin for installing the battery in the length direction of the box, reducing the difficulty of installing the battery.
  • the sub-compartment only accommodates one battery, which is beneficial to increase the proportion of the battery in the sub-compartment along the width direction of the box body, and is beneficial to improve the utilization rate of the space of the sub-compartment along the width direction of the box body.
  • the sub-compartment accommodates a plurality of batteries along the height direction of the box body, so that the size of a single battery in the height direction of the box body can be reduced, and the manufacturing difficulty and manufacturing cost of the battery can be reduced.
  • the number of sub-compartments is less than or equal to 4. In this way, there are fewer partition components separating two adjacent sub-compartments in the battery compartment, which reduces the space occupied by the partition components in the battery compartment, provides more space for the battery, and improves the space utilization of the battery compartment.
  • the volume of the battery is V 6
  • the sum of the volumes of the shells of the multiple battery cells of the battery is V 7 , which satisfies: 0.5 ⁇ V 7 /V 6 ⁇ 0.8.
  • V 7 /V 6 ⁇ 0.5 makes the volume of all the battery cells of the battery account for a larger proportion in the battery, improves the utilization rate of the internal space of the battery, and is conducive to improving the volume energy density of the battery, so as to improve the volume energy density of the energy storage device;
  • V 7 /V 6 ⁇ 0.8 makes the volume of all the battery cells of the battery account for less than too large in the battery, provides more space for other components of the battery, and reduces the assembly difficulty and manufacturing cost of the battery.
  • the number of battery cells of the battery is N 8
  • V 7 V 3 *N 8
  • the volumes of the shells of all battery cells of the battery are equal, and battery cells of the same specification can be selected.
  • it is conducive to improving the assembly efficiency of the battery; on the other hand, it can reduce the rate of space waste caused by different specifications of battery cells of the battery.
  • the battery includes p*q battery cells, which are arranged in p rows and q columns, with each row of battery cells arranged along the length direction of the box, and each column of battery cells arranged along the width direction of the box, and p and q are both positive integers. In this way, all battery cells of the battery are distributed in a rectangular array, which is conducive to improving the space utilization of the battery.
  • the sum of the dimensions of the outer shells of q battery cells along the length direction of the box is L 7
  • the dimension of the battery along the length direction of the box is L 5 , which satisfies: 0.8 ⁇ L 7 /L 5 ⁇ 0.95.
  • L 7 /L 5 ⁇ 0.8 so that the outer shell of each row of battery cells along the length direction of the box in the battery accounts for a large proportion, fully utilizing the space of the battery in the length direction of the box, reducing the gap between the outer shells of two adjacent battery cells in the length direction of the box, which is beneficial to increasing the volume proportion of the outer shells of all battery cells in the battery, and is beneficial to increasing the volume energy density of the battery.
  • L 7 /L 5 ⁇ 0.95 the outer shell of each row of battery cells along the length direction of the box in the battery does not account for too large a proportion, reducing the manufacturing difficulty and manufacturing cost of the battery.
  • q 4, 0.2m ⁇ L 3 ⁇ 0.3m.
  • the size of the outer shell of the battery cell is controlled within the range of 0.2m to 0.3m, so that the battery has a higher volume energy density.
  • q 2, 0.4m ⁇ L 3 ⁇ 0.6m.
  • the size of the outer shell of the battery cell is controlled within the range of 0.4m ⁇ L 3 ⁇ 0.6m, so that the battery has a higher volume energy density.
  • the sum of the dimensions of the outer shells of p battery cells along the width direction of the box is D 7
  • the dimension of the battery along the width direction of the box is D 5 , satisfying: 0.75 ⁇ D 7 /D 5 ⁇ 0.95.
  • D 7 /D 5 ⁇ 0.75 so that the outer shell of each column of battery cells along the width direction of the box in the battery accounts for a large proportion, fully utilizing the space of the battery in the width direction of the box, reducing the gap between the outer shells of two adjacent battery cells in the width direction of the box, which is beneficial to increasing the volume proportion of the outer shells of all battery cells in the battery, and is beneficial to increasing the volume energy density of the battery.
  • D 7 /D 5 ⁇ 0.95 the outer shell of each column of battery cells along the width direction of the box in the battery does not account for too large a proportion, reducing the manufacturing difficulty and manufacturing cost of the battery.
  • Such a battery has a high volume energy density.
  • the size of the outer shell of the battery cell along the height direction of the box is H 3
  • the size of the battery along the height direction of the box is H 5 , which satisfies: 0.75 ⁇ H 3 /H 5 ⁇ 0.95.
  • H 3 /H 5 ⁇ 0.75 so that the size of the outer shell of the battery cell along the height direction of the box in the battery accounts for a large proportion, and the space of the battery in the height direction of the box is fully utilized, which is conducive to increasing the volume proportion of the outer shell of all battery cells in the battery, and is conducive to improving the volume energy density of the battery.
  • H 3 /H 5 ⁇ 0.95 so that the size of the outer shell of the battery cell along the height direction of the box in the battery does not account for too large a proportion, reducing the manufacturing difficulty and manufacturing cost of the battery.
  • H 3 ⁇ 0.17m makes the size of the outer shell of the battery cell along the height direction of the box body larger, which is beneficial to increase the proportion of the outer shell of the battery cell in the battery along the height direction of the box body, and is beneficial to improve the volume energy density of the battery cell.
  • H 3 ⁇ 0.6m makes the size of the outer shell of the battery cell along the height direction of the box body not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell.
  • 0.2m ⁇ H 3 ⁇ 0.45m This takes into account the volume energy density of the battery, the difficulty of manufacturing the battery, and the economic requirements of the battery. This is conducive to further improving the volume energy density of the battery and reducing the difficulty and cost of manufacturing the battery.
  • the battery cell further includes at least one electrode assembly, which is accommodated in the shell;
  • the shell is in the shape of a right parallelepiped, the size of the shell in the first direction is W 1 , the size of the shell in the second direction is T 1 , and the size of the shell in the third direction is K 1 , one of the first direction, the second direction and the third direction is parallel to the length direction of the box body, another is parallel to the width direction of the box body, and the third is parallel to the height direction of the box body;
  • the shell includes a first wall and a second wall arranged opposite to each other along the first direction, a third wall and a fourth wall arranged opposite to each other along the second direction, and a fifth wall and a sixth wall arranged opposite to each other along the third direction, the sum of the thicknesses of the first wall and the second wall is a, the sum of the thicknesses of the third wall and the fourth wall is b, and the sum of the thicknesses of the fifth wall and the sixth wall is c, satisfying
  • the ratio of the volume of the internal space of the shell of the battery cell to the volume of the shell is above 0.9, so that the internal space of the shell accounts for a larger proportion, and the space of the shell that can be used to accommodate the electrode assembly is increased. Under the same chemical system, the volume energy density of the battery cell can be improved.
  • (W 1 -a)/W 1 ⁇ 0.97, (T 1 -b)/T 1 ⁇ 0.965, and (K 1 -c)/K 1 ⁇ 0.965 In this way, the internal space of the housing can be increased in three dimensions, further improving the volume energy density of the battery cell.
  • the housing includes a shell and an end cap, the shell has an opening, the end cap covers the opening, and the end cap is provided with an electrode terminal;
  • the shell includes an integrally formed first wall, a second wall, a third wall, a fourth wall, and a fifth wall, and the end cap is a sixth wall.
  • the battery cell further includes a first insulating member and a second insulating member, the first insulating member is disposed between the fifth wall and the electrode assembly and abuts against the fifth wall; the second insulating member is disposed between the sixth wall and the electrode assembly and abuts against the sixth wall; the maximum dimension of the first insulating member in the third direction is e 1 , and the maximum dimension of the second insulating member in the third direction is e 2 , satisfying: (W 1 -a-1.6mm)*(T 1 -b-1.6mm)*(K 1 -ce 1 -e 2 )/(W 1 *T 1 *K 1 ) ⁇ 0.88, 0.3mm ⁇ e 1 ⁇ 1.2mm, and 2mm ⁇ e 2 ⁇ 10mm. In this way, the space inside the housing for the electrode assembly is increased, allowing for the accommodation of a larger volume electrode assembly, so that the volume energy density of the battery cell is further improved.
  • the battery cell further includes a first insulating member and a second insulating member, the first insulating member is disposed between the fifth wall and the electrode assembly and abuts against the fifth wall; the second insulating member is disposed between the sixth wall and the electrode assembly and abuts against the sixth wall; the maximum dimension of the first insulating member in the third direction is e 1 , and the maximum dimension of the second insulating member in the third direction is e 2 , satisfying: (W 1 -a-4mm)*(T 1 -b-4mm)*(K 1 -ce 1 -e 2 )/(W 1 *T 1 *K 1 ) ⁇ 0.85, 0.3mm ⁇ e 1 ⁇ 1.2mm, and 2mm ⁇ e 2 ⁇ 10mm. In this way, the space inside the housing for the electrode assembly is increased, allowing for the accommodation of a larger volume electrode assembly, so that the volume energy density of the battery cell is further improved.
  • the first direction is parallel to the length direction of the box
  • the second direction is parallel to the width direction of the box
  • the third direction is parallel to the height direction of the box.
  • the end cap and the fifth wall of the shell are arranged relatively along the height direction of the box
  • the first wall and the second wall of the shell are arranged relatively along the length direction of the box
  • the third wall and the fourth wall of the shell are arranged relatively along the width direction of the box, which is conducive to increasing the volume proportion of all battery cells in the battery compartment.
  • the housing includes a shell and two end covers, the shell having two openings arranged opposite to each other along a third direction, and the two end covers are respectively The cover is closed over the two openings, and at least one end cover is provided with an electrode terminal;
  • the shell comprises an integrally formed first wall, a second wall, a third wall and a fourth wall, and the two end covers are respectively a fifth wall and a sixth wall.
  • the battery cell further includes a third insulating member and a fourth insulating member, the third insulating member is disposed between the fifth wall and the electrode assembly and abuts against the fifth wall; the fourth insulating member is disposed between the sixth wall and the electrode assembly and abuts against the sixth wall; the maximum dimension of the third insulating member in the third direction is e 3 , and the maximum dimension of the fourth insulating member in the third direction is e 4 , satisfying: (W 1 -a-1.6mm)*(T 1 -b-1.6mm)*(K 1 -ce 3 -e 4 )/(W 1 *T 1 *K 1 ) ⁇ 0.88, 2mm ⁇ e 3 ⁇ 10mm, and 2mm ⁇ e 4 ⁇ 10mm. In this way, the space inside the housing for the electrode assembly is increased, allowing for the accommodation of a larger volume electrode assembly, so that the volume energy density of the battery cell is further improved.
  • the battery cell further includes a third insulating member and a fourth insulating member, the third insulating member is disposed between the fifth wall and the electrode assembly and abuts against the fifth wall; the fourth insulating member is disposed between the sixth wall and the electrode assembly and abuts against the sixth wall; the maximum dimension of the third insulating member in the third direction is e 3 , and the maximum dimension of the fourth insulating member in the third direction is e 4 , satisfying: (W 1 -a-4mm)*(T 1 -b-4mm)*(K 1 -ce 3 -e 4 )/(W 1 *T 1 *K 1 ) ⁇ 0.85, 2mm ⁇ e 3 ⁇ 10mm, and 2mm ⁇ e 4 ⁇ 10mm. In this way, the space left for the electrode assembly inside the housing is increased, allowing for the accommodation of a larger volume electrode assembly, so that the volume energy density of the battery cell is further improved.
  • W 1 ⁇ T 1 the first direction is parallel to the height direction of the box
  • the second direction is parallel to the width direction of the box
  • the third direction is parallel to the length direction of the box.
  • W 1 *T 1 *K 1 ⁇ 0.003m 3 so that when the ratio of the volume of the internal space of the shell to the volume of the shell is greater than 0.9, the wall thickness of the shell is not too small, thereby meeting the structural strength requirement of the shell; W 1 *T 1 *K 1 ⁇ 0.04m 3 , the capacity and current of the battery cell can be controlled within a suitable range, reducing the risk of damage to overcurrent components in the circuit.
  • 0.0032 m 3 ⁇ W 1 *T 1 *K 1 ⁇ 0.032 m 3 The structural strength of the housing and the heat generation requirement of the battery cell are taken into consideration, the structural strength of the housing is further improved, and the risk of damage to the overcurrent components in the circuit is reduced.
  • the positive electrode material of the battery cell includes a lithium-containing phosphate
  • the capacity of the battery cell is C, and satisfies: C ⁇ 350Ah, C/(W 1 -a)*(T 1 -b)*(K 1 -c) ⁇ 118Ah/L.
  • the positive electrode material of the battery cell includes a lithium-containing phosphate, and C ⁇ 350Ah
  • setting C/((W 1 -a)*(T 1 -b)*(K 1 -c)) to be above 118Ah/L can increase the volume ratio of the internal space of the shell of the battery cell, which is conducive to achieving a ratio of the volume of the internal space of the shell of the battery cell to the volume of the shell of 0.9 or more.
  • the positive electrode material of the battery cell includes a lithium transition metal oxide
  • the capacity of the battery cell is C, and the following conditions are satisfied: C ⁇ 650Ah, C/((W 1 -a)*(T 1 -b)*(K 1 -c)) ⁇ 190Ah/L.
  • the positive electrode material of the battery cell includes a lithium transition metal oxide, and C ⁇ 650Ah
  • setting C/((W 1 -a)*(T 1 -b)*(K 1 -c)) to be above 190Ah/L can increase the volume ratio of the internal space of the outer shell of the battery cell, which is conducive to achieving a ratio of the volume of the internal space of the outer shell of the battery cell to the volume of the outer shell of 0.9 or above.
  • the battery cell is a sodium ion battery cell
  • the capacity of the battery cell is C, which satisfies: C ⁇ 260Ah, C/((W 1 -a)*(T 1 -b)*(K 1 -c)) ⁇ 87Ah/L.
  • the battery cell is a sodium ion battery cell, and C ⁇ 260Ah
  • setting C/((W 1 -a)*(T 1 -b)*(K 1 -c)) to be above 87Ah/L can increase the volume ratio of the internal space of the shell of the battery cell, which is conducive to achieving a ratio of the volume of the internal space of the shell of the battery cell to the volume of the shell of 0.9 or more.
  • FIG1 is an axonometric diagram of an energy storage device provided in some embodiments of the present application.
  • FIG2 is a schematic diagram of the structure of the energy storage device shown in FIG1 ;
  • FIG3 is a cross-sectional view of the energy storage device shown in FIG2 at an angle of 2 to one another;
  • FIG4 is a schematic structural diagram of the box shown in FIG2 ;
  • FIG5 is an exploded view of a battery cell according to some embodiments of the present application.
  • FIG6 is an exploded view of a battery cell provided in some other embodiments of the present application.
  • FIG7 is a schematic diagram of the structure of an energy storage device provided in some embodiments of the present application.
  • FIG8 is a B-B cross-sectional view of the energy storage device shown in FIG7 ;
  • FIG9 is an exploded view of a battery provided in some embodiments of the present application.
  • FIG10 is a schematic diagram of the structure of an energy storage device provided in some other embodiments of the present application.
  • FIG11 is a C-C cross-sectional view of the energy storage device shown in FIG10 ;
  • FIG12 is a cross-sectional view of an energy storage device provided in some embodiments of the present application.
  • FIG13 is a structural view of an energy storage device provided in some other embodiments of the present application.
  • FIG14 is a schematic structural diagram of the box shown in FIG13;
  • FIG15 is a D-D cross-sectional view of the energy storage device shown in FIG13 ;
  • FIG16 is a schematic diagram of the structure of a battery provided in some embodiments of the present application.
  • Fig. 17 is a cross-sectional view taken along line E-E of the battery shown in Fig. 16;
  • FIG18 is an isometric view of a battery cell provided in some embodiments of the present application.
  • FIG19 is an exploded view of the battery cell shown in FIG18 ;
  • FIG20 is a cross-sectional exploded view of the battery cell shown in FIG18 cut along the UW plane;
  • FIG21 is a cross-sectional exploded view of the battery cell shown in FIG18 cut along the VW plane;
  • FIG22 is an axonometric view of a battery cell provided in some other embodiments of the present application.
  • FIG23 is an exploded view of the battery cell shown in FIG22 ;
  • FIG24 is a cross-sectional exploded view of the battery cell shown in FIG22 cut along the UW plane;
  • FIG. 25 is a cross-sectional exploded view of the battery cell shown in FIG. 22 cut along the VW plane.
  • Icons 1-box; 11-battery compartment; 111-sub-compartment; 112-partition; 113-support; 13-thermal management compartment; 15-main control compartment; 2-battery; 21-battery cell; 211-housing; 2111-shell; 2112-end cover; 2112a-outer surface of the end cover; 2112b-convex hull; 2113-first wall; 2114-second wall; 2115-third wall; 2116-fourth wall; 2117-fifth wall; 2118- Sixth wall; 212-electrode terminal; 213-electrode assembly; 2131-ear; 214-first insulating member; 215-second insulating member; 216-third insulating member; 217-fourth insulating member; 22-battery box; 221-first part; 222-second part; 23-bus component; 10-energy storage device; U-first direction; V-second direction; W-third direction; X-length direction of the box body; Y-wid
  • the terms “installed”, “connected”, “connected”, and “attached” should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • installed should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements.
  • a and/or B can represent: A exists alone, A and B exist at the same time, and B exists alone.
  • the character "/" in this application generally indicates that the associated objects before and after are in an "or" relationship.
  • the battery cell may be a secondary battery.
  • a secondary battery refers to a battery cell that can be continuously used by activating active materials by charging after the battery cell is discharged.
  • Battery cells include, but are not limited to, lithium-ion batteries, sodium-ion batteries, sodium-lithium-ion batteries, lithium metal batteries, sodium metal batteries, lithium-sulfur batteries, magnesium-ion batteries, nickel-hydrogen batteries, nickel-cadmium batteries, lead-acid batteries, and the like.
  • a battery cell generally includes an electrode assembly.
  • the electrode assembly includes a positive electrode, a negative electrode, and a separator.
  • active ions such as lithium ions
  • the separator is set between the positive electrode and the negative electrode to reduce the risk of short circuit between the positive and negative electrodes, while allowing active ions to pass through.
  • the positive electrode may be a positive electrode sheet, and the positive electrode sheet may include a positive electrode current collector and a positive electrode active material disposed on at least one surface of the positive electrode current collector.
  • the positive electrode current collector has two surfaces facing each other in its thickness direction, and the positive electrode active material is disposed on either or both of the two facing surfaces of the positive electrode current collector.
  • the positive electrode current collector may be a metal foil or a composite current collector.
  • the metal foil aluminum with a silver-plated surface, stainless steel with a silver-plated surface, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.
  • the composite current collector may include a polymer material base and a metal layer.
  • the composite current collector may be formed by forming a metal material (aluminum, aluminum alloy, nickel, nickel alloy, titanium, titanium alloy, silver and silver alloy, etc.) on a polymer material substrate (such as a substrate of polypropylene, polyethylene terephthalate, polybutylene terephthalate, polystyrene, polyethylene, etc.).
  • the positive electrode active material may include at least one of the following materials: lithium-containing phosphates, lithium transition metal oxides, and their respective modified compounds.
  • the present application is not limited to these materials, and other conventional materials that can be used as positive electrode active materials for batteries may also be used. These positive electrode active materials may be used alone or in combination of two or more.
  • the negative electrode may be a negative electrode sheet, and the negative electrode sheet may include a negative electrode current collector.
  • the negative electrode current collector may be a metal foil, a foamed metal or a composite current collector.
  • the metal foil aluminum or stainless steel treated with silver, stainless steel, copper, aluminum, nickel, carbon electrode, carbon, nickel or titanium, etc. may be used.
  • the foamed metal may be foamed nickel, foamed copper, foamed aluminum, foamed alloy, or foamed carbon, etc.
  • the composite current collector may include a polymer material base and a metal layer.
  • the composite current collector may be formed by placing a metal material (copper, copper) on the surface of the composite current collector.
  • the present invention relates to a nanostructured carbon fiber substrate comprising a nanostructured carbon fiber, ...
  • the negative electrode sheet may include a negative electrode current collector and a negative electrode active material disposed on at least one surface of the negative electrode current collector.
  • the negative electrode current collector has two surfaces facing each other in its thickness direction, and the negative electrode active material is disposed on either or both of the two facing surfaces of the negative electrode current collector.
  • the negative electrode active material may adopt the negative electrode active material for battery cells known in the art.
  • the negative electrode active material may include at least one of the following materials: artificial graphite, natural graphite, soft carbon, hard carbon, silicon-based materials, tin-based materials, lithium titanate, etc.
  • the silicon-based material may be selected from at least one of elemental silicon, silicon oxide compounds, silicon-carbon composites, silicon-nitrogen composites, and silicon alloys.
  • the tin-based material may be selected from at least one of elemental tin, tin oxide compounds, and tin alloys.
  • the present application is not limited to these materials, and other traditional materials that can be used as negative electrode active materials for batteries may also be used. These negative electrode active materials may be used alone or in combination of two or more.
  • the material of the positive electrode current collector may be aluminum, and the material of the negative electrode current collector may be copper.
  • the electrode assembly is a wound structure.
  • the electrode assembly is a laminate structure.
  • An energy storage device is a device that integrates multiple battery cells in a box. Multiple battery cells are connected in series, parallel or hybrid to store electrical energy. Energy storage devices can be used in power systems to store excess electrical energy during off-peak periods to supplement peak periods.
  • a plurality of batteries are arranged in a box, and the battery includes a battery box and a plurality of battery cells contained in the battery box.
  • the space utilization rate of all batteries in the battery compartment of the box is not high; and/or the space utilization rate of all battery cells in the battery box is not high, which results in a low space utilization rate of all battery cells in the battery compartment of the energy storage device, and a low volume energy density of the energy storage device.
  • an embodiment of the present application provides an energy storage device, which sets the ratio of the sum of the volumes of the outer shells of all battery cells in the battery compartment to the volume of the battery compartment within the range of 0.4 to 0.95, so that the volume of the outer shells of all battery cells in the battery compartment accounts for a larger proportion, thereby improving the space utilization of the battery compartment, which is beneficial to improving the volume energy density of the energy storage device.
  • Figure 1 is an isometric view of an energy storage device 10 provided in some embodiments of the present application
  • Figure 2 is a schematic diagram of the structure of the energy storage device 10 shown in Figure 1
  • Figure 3 is an AA cross-sectional view of the energy storage device 10 shown in Figure 2
  • Figure 4 is a schematic diagram of the structure of the box body 1 shown in Figure 2.
  • the present application provides an energy storage device 10, including a box body 1 and a plurality of battery cells 21.
  • the box body 1 has a battery compartment 11.
  • the plurality of battery cells 21 are accommodated in the battery compartment 11.
  • the battery cells 21 include a shell 211 and an electrode terminal 212.
  • the electrode terminal 212 is disposed on the shell 211.
  • the volume of the battery compartment 11 is V 1
  • the sum of the volumes of the shells 211 of the plurality of battery cells 21 is V 2 , and 0.4 ⁇ V 2 /V 1 ⁇ 0.95.
  • the box 1 can be a standard part that meets the international standards set by the International Organization for Standardization ISO, or it can be a non-standard part.
  • the box 1 can also be called a container, and the energy storage device 10 can also be called an energy storage container.
  • the box 1 can be in a variety of shapes, such as cylindrical and prism-shaped.
  • the prism can be a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc.
  • the box 1 is a quadrangular prism, and specifically, the box 1 is a rectangular parallelepiped.
  • the battery compartment 11 is a space inside the box body 1 for accommodating the battery cell 21.
  • the battery compartment 11 can accommodate only the battery cell 21, or it can accommodate other components in addition to the battery cell 21, such as fire protection components, thermal management components, partitions, etc. Fire protection components may include pipes, detectors, etc.
  • the thermal management component may be a water-cooled plate.
  • the partition may be a plate, a beam, etc. After the partition is set in the battery compartment 11, the battery compartment 11 can be divided into a plurality of spaces, each of which is used to accommodate the battery cell 21.
  • the battery compartment 11 may be in a variety of shapes, such as a cylindrical shape, a prism shape, etc.
  • the battery compartment 11 is a quadrangular prism, specifically, the battery compartment 11 is a rectangular parallelepiped.
  • the battery compartment 11 is a rectangular parallelepiped.
  • an opening is formed on at least one side of the battery compartment 11 along the width direction Y of the box body, and the battery cell 21 can enter the battery compartment 11 through the opening.
  • a door leaf may be provided at the opening side of the battery compartment 11 , and the door leaf may be slidably connected to the box body 1 , hingedly connected, etc., so as to open or close the opening of the battery compartment 11 by sliding or rotating.
  • the volume of the battery compartment 11 can be measured in a variety of ways.
  • the length, width and height of the battery compartment 11 can be measured by a measuring tool, and the volume V 1 of the battery compartment 11 can be calculated by measuring the length, width and height of the battery compartment 11. It can be understood that the product of the length, width and height of the battery compartment 11 is V 1 , wherein the measuring tool can be a ruler.
  • each compartment wall of the battery compartment 11 is a plane
  • the length, width and height of the battery compartment 11 are measured with each compartment wall as a reference
  • a certain compartment wall of the battery compartment 11 is formed with a protrusion or a recess
  • the length, width and height of the battery compartment 11 are measured with the plane area of the compartment wall as a reference.
  • the volume of the battery compartment 11 can be measured by a filling method.
  • the specific method is as follows: fill the battery compartment 11 with plastic pellets, the material of the plastic pellets can be PP (polypropylene) or PE (polyethylene), the particle size is 0.5mm-1.5mm, and the density is 0.94g/cm 3 -0.96g/cm 3 ; measure the total volume of the plastic pellets in the battery compartment 11 by using a measuring container, and thus obtain the volume V 1 of the battery compartment 11.
  • the material of the plastic pellets can be PP (polypropylene) or PE (polyethylene)
  • the particle size is 0.5mm-1.5mm
  • the density 0.94g/cm 3 -0.96g/cm 3
  • measure the total volume of the plastic pellets in the battery compartment 11 by using a measuring container, and thus obtain the volume V 1 of the battery compartment 11.
  • the housing 1 may also include a thermal management compartment 13 and a main control compartment 15.
  • the thermal management compartment 13 may accommodate a water cooling unit, which is used to provide a fluid medium for the thermal management components.
  • the main control compartment 15 may be used to accommodate a main control unit, which is used for high-voltage control and communication of multiple battery cells 21 in the battery compartment 11.
  • the housing 1 is a rectangular parallelepiped, and the battery compartment 11 and the main control compartment 15 are arranged along the height direction Z of the housing.
  • the thermal management compartment 13 may be located on one side of the battery compartment 11 along the length direction X of the housing, and the main control compartment 15 may be located at the bottom of the battery compartment 11 along the height direction Z of the housing.
  • the housing 1 may also include an electrical compartment, which may be used to accommodate a convergence unit, a distribution unit, and a control unit.
  • the confluence unit is used to realize the confluence of multiple battery cells 21 and realize the safe connection between multiple battery cells 21 and the DC side of the energy storage converter (PCS, Power Conversion System).
  • the power distribution unit can draw power from the power grid to power the internal control system and auxiliary systems;
  • the control unit can include a battery cell management unit, a fire control unit
  • the electrical compartment and the thermal management compartment 13 can be located on one side of the battery compartment 11 along the length direction X of the box body, and the electrical compartment and the thermal management compartment 13 are arranged along the width direction Y of the box body.
  • the box 1 may include a frame and a plurality of side panels, and the frame may be formed by connecting a plurality of beams.
  • the frame may be formed by connecting a plurality of beams.
  • two side panels are respectively arranged on both sides of the frame;
  • the height direction Z of the box two side panels are respectively arranged on both sides of the frame;
  • a side panel is arranged on one side of the frame, and the other side is used to install the door leaf.
  • the frame and the five side panels together define the internal space of the box 1, and a plurality of beams or plates are arranged in the space, so that the space can be divided into a battery compartment 11, a thermal management compartment 13, a main control compartment 15 and an electrical compartment.
  • the height direction Z of the box is parallel to the gravity direction of the box 1
  • the height direction Z of the box, the width direction Y of the box and the length direction X of the box are perpendicular to each other
  • the length of the box 1 is greater than or equal to the width of the box 1.
  • the multiple battery cells 21 in the battery compartment 11 can be connected in series, in parallel, or in mixed connection.
  • Mixed connection means that the multiple battery cells 21 are both connected in series and in parallel.
  • the multiple battery cells 21 can be directly accommodated in the battery compartment 11, or the multiple battery cells 21 can be formed into a battery 2, and then one or more batteries 2 can be accommodated in the battery compartment 11. Taking the battery compartment 11 as an example, multiple batteries 2 can be accommodated in the battery compartment 11.
  • Multiple battery cells 21 can be installed in a battery box to form a battery 2, and then multiple batteries 2 can be installed in the battery compartment 11.
  • the multiple batteries 2 can be connected in series, in parallel, or in mixed connection.
  • the battery cell 21 is the smallest energy storage unit in the energy storage device 10.
  • the battery cell 21 can be a cylindrical battery cell, a prismatic battery cell, a soft-pack battery cell or a battery cell of other shapes.
  • the prismatic battery cell includes a square shell battery cell, a blade-shaped battery cell, a polygonal prismatic battery cell, etc.
  • the polygonal prismatic battery cell is, for example, a pentagonal prismatic battery cell, a hexagonal prismatic battery cell, etc.
  • the battery cell 21 further includes an electrode assembly 213, which is contained in a housing 211, and an electrode terminal 212 is disposed in the housing 211, and the electrode terminal 212 is electrically connected to the electrode assembly 213.
  • the housing 211 is a component for accommodating the electrode assembly 213 and the electrolyte.
  • the housing 211 may be cylindrical or prism-shaped. Prisms include triangular prisms, quadrangular prisms, pentagonal prisms, hexagonal prisms, etc. Quadrangular prisms include oblique quadrangular prisms, right parallelepipeds, etc. Right parallelepipeds include cuboids, cubes, etc.
  • the housing 211 may include a shell 2111 and an end cap 2112.
  • the housing 2111 may be a hollow structure with an opening at one end, or a hollow structure with openings at opposite ends.
  • the housing 2111 may be in various shapes, such as a cylindrical shape, a prism shape, etc.
  • the housing 2111 may be made of various materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.
  • the end cap 2112 is a component that closes the opening of the shell 2111 to isolate the internal environment of the battery cell 21 from the external environment.
  • the end cap 2112 and the shell 2111 together define a receiving space for accommodating the electrode assembly 213, electrolyte and other components.
  • the shape of the end cap 2112 can be adapted to the shape of the shell 211.
  • the shell 2111 is a rectangular parallelepiped, and the end cap 2112 is a rectangular plate structure adapted to the shell 211.
  • the shell 2111 is cylindrical, and the end cap 2112 is a circular plate structure adapted to the shell 2111.
  • the material of the end cap 2112 can also be a variety of materials, such as copper, iron, aluminum, steel, aluminum alloy, plastic, etc.
  • the material of the end cap 2112 and the shell 2111 can be the same or different.
  • one end cap 2112 may be provided in the embodiment where the housing 2111 is opened at one end. In the embodiment where the housing 2111 is opened at two opposite ends, two end caps 2112 may be provided, and the two end caps 2112 respectively close the two openings of the housing 2111, and the two end caps 2112 and the housing 2111 together define a receiving space.
  • the electrode terminal 212 is a component used to input or output electric energy in the battery cell 21.
  • the electrode terminal 212 is provided on the housing 211, and the electrode terminal 212 is used to electrically connect with the pole tab 2131 of the electrode assembly 213.
  • the electrode terminal 212 can be provided on the shell 2111 of the housing 211, or on the end cover 2112 of the housing 211.
  • the electrode terminal 212 and the pole tab 2131 can be directly connected, for example, the electrode terminal 212 and the pole tab 2131 are directly welded; the electrode terminal 212 and the pole tab 2131 can also be indirectly connected through a current collecting component, which can be a metal conductor, for example, copper, iron, aluminum, steel, aluminum alloy, etc.
  • the shell 2111 is a hollow structure with an opening formed at one end. There is only one end cover 2112 in the shell 2111. The end cover 2112 closes the opening of the shell 2111. Two electrode terminals 212 are provided on the end cover 2112. The electrode terminals 212 partially protrude from the outer surface 2112a of the end cover. A positive electrode ear and a negative electrode ear are formed at one end of the electrode assembly 213 facing the end cover 2112. The positive electrode ear and the negative electrode ear are electrically connected to the two electrode terminals 212, respectively.
  • the outer shell 211 of the battery cell 21 is in the shape of a cuboid and the battery compartment 11 is in the shape of a cuboid as an example
  • the outer shell 211 has a length direction, a width direction and a height direction
  • the length of the outer shell 211 is greater than or equal to the width of the outer shell 211
  • the electrode terminal 212 is located at one end of the outer shell 211 in the height direction.
  • one of the length direction, the width direction and the height direction of the outer shell 211 may be parallel to the length direction X of the box, another may be parallel to the width direction Y of the box, and another may be parallel to the height direction Z of the box.
  • the volumes of the outer shells 211 of all the battery cells 21 in the battery compartment 11 may be equal, for example, all the battery cells 21 in the battery compartment 11 are battery cells 21 of the same specification, that is, the length, width and height of all the battery cells 21 are the same; the volumes of the outer shells 211 of all the battery cells 21 in the battery compartment 11 may also be at least two different, for example, all the battery cells 21 in the battery compartment 11 are composed of battery cells 21 of multiple specifications.
  • V2 is the sum of the volumes of the outer shells 211 of all the battery cells 21 in the battery compartment 11.
  • the volume of the outer shell 211 of one battery cell 21 can be measured, and then V2 is obtained by multiplying the volume of the outer shell 211 of the battery cell 21 by the number of the battery cells 21 in the battery compartment 11.
  • the volumes of the outer shells 211 of at least two battery cells 21 in the battery compartment 11 are not equal, for example, the outer shells 211 of all battery cells 21 in the battery compartment 11 are composed of two outer shells 211 of different volumes
  • the volume of the outer shells 211 of the first type of battery cells 21 can be measured first, and the volume of the outer shells 211 of the first type of battery cells 21 can be multiplied by the number of the first type of battery cells 21 in the battery compartment 11 to obtain a first total volume
  • the volume of the outer shells 211 of the second type of battery cells 21 can be measured, and the volume of the outer shells 211 of the second type of battery cells 21 can be multiplied by the number of the second type of battery cells 21 in the battery compartment 11 to obtain a second total volume
  • the sum of the first total volume and the second total volume is V 2 .
  • the volume of the outer shell 211 of the battery cell 21 can be measured in a variety of ways.
  • the length, width and height of the outer shell 211 can be measured respectively by a measuring tool, and the volume of the outer shell 211 can be calculated by measuring the length, width and height of the outer shell 211.
  • the product of the length, width and height of the outer shell 211 is the volume of the outer shell 211, wherein the measuring tool can be a vernier caliper.
  • the measuring tool can be a vernier caliper.
  • the volume of the outer shell 211 can be measured by an immersion method.
  • the specific method is as follows: inject liquid into a measuring container, and record the volume value X1 corresponding to the liquid level, and gradually immerse the battery cell 21 in the liquid until the outer surface 2112a of the end cap is flush with the liquid level. At this time, the end cap The electrode terminal 212 on 2112 is not immersed in the liquid, and the volume value X 2 corresponding to the liquid surface at this time is recorded, and X 2 ⁇ X 1 is the volume of the shell 211 of the battery cell 21 .
  • FIG. 6 is an exploded view of a battery cell 21 provided in some other embodiments of the present application.
  • a convex 2112b protruding from an outer surface 2112a of the end cover is formed on the end cover 2112, and the volume of the outer shell 211 of the battery cell 21 does not include the volume of the convex 2112b.
  • the outer shell 211 of the battery cell 21 when measuring the height of the outer shell 211, the distance between the outer surface of the wall of the outer shell 211 away from the end cover 2112 and the outer surface 2112a of the end cover is the height of the outer shell 211, and the height of the convex 2112b is not included in the height of the outer shell 211.
  • V 2 /V 1 may be any point value of 0.4, 0.43, 0.5, 0.55, 0.57, 0.62, 0.67, 0.71, 0.75, 0.81, 0.85, 0.92, 0.95, etc., or a range value between any two of them.
  • V 2 /V 1 ⁇ 0.95, so that the volume proportion of all battery cells 21 in the battery compartment 11 is not too large, reducing the assembly accuracy requirements of the energy storage device 10, and can effectively control the manufacturing cost of the energy storage device 10 within a reasonable range.
  • V 2 /V 1 ⁇ 0.4 so that the volume proportion of all battery cells 21 in the battery compartment 11 is relatively large, thereby improving the space utilization of the battery compartment 11, which is conducive to improving the volume energy density of the energy storage device 10.
  • the box 1 is a rectangular box 1, and the length, width and height of the box 1 are 6.058m, 2.438m and 2.896m respectively.
  • the battery compartment 11 is a rectangular parallelepiped, and the battery cells 21 are square shell battery cells. All battery cells 21 in the battery compartment 11 have the same specifications and belong to the same chemical system.
  • the positive electrode material of the battery cells 21 includes lithium iron phosphate. See Table 1 for specific implementation data:
  • V 2 /V 1 may be any point value of 0.5, 0.53, 0.55, 0.57, 0.59, 0.62, 0.65, 0.67, 0.69, 0.71, 0.73, 0.75, 0.77, 0.79, 0.81, 0.83, 0.84, 0.85, etc., or a range value between any two of them.
  • 0.5 ⁇ V 2 /V 1 ⁇ 0.85 which takes into account both the volume energy density and the economic requirements of the energy storage device 10 , and is beneficial to further reduce the manufacturing cost of the energy storage device 10 and improve the volume energy density of the energy storage device 10 .
  • V2 / V1 can be any one of 0.52, 0.53, 0.54, 0.55, 0.56, 0.57, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, etc., or a range between any two of them.
  • the volume of the housing 2111 of each battery cell 21 is V 3
  • the shell 2111 of the battery cell 21 is in the shape of a rectangular parallelepiped, the lengths of the shells 2111 of all battery cells 21 are equal, the widths of the shells 2111 of all battery cells 21 are equal, and the heights of the shells 2111 of all battery cells 21 are equal, so that the volumes of the shells 211 of all battery cells 21 are equal.
  • N1 is a positive integer greater than or equal to 2. As an example, 2000 ⁇ N1 ⁇ 5000 .
  • V 2 V 3 *N 1 , so that the volumes of the shells 211 of all battery cells 21 in the battery compartment 11 are equal, and battery cells 21 of the same specification can be selected.
  • V 3 /V 1 may be any point value of 0.0001, 0.00012, 0.00015, 0.00017, 0.00019, 0.0002, 0.00021, 0.00023, 0.00025, etc., or a range of values between any two of them.
  • the space occupied by the outer shell 211 of the battery cell 21 and the insulating member inside the outer shell 211 will be larger, and the effective space of the battery compartment 11 will be reduced.
  • V 3 /V 1 ⁇ 0.0001, so that the outer shell 211 of the battery cell 21 accounts for a large volume in the battery compartment 11.
  • the number of battery cells 21 can be reduced, and the probability of reducing the available effective space due to the excessive number of battery cells 21 is reduced, which is beneficial to improve the volume energy density of the energy storage device 10; V 3 /V 1 ⁇ 0.00025, so that the outer shell 211 of the battery cell 21 does not account for too large a volume in the battery compartment 11, and the manufacturing difficulty and manufacturing cost of the battery cell 21 are reduced.
  • V 3 /V 1 may be any one of 0.00015, 0.00016, 0.00017, 0.00018, 0.00019, 0.0002, etc., or a range of values between any two of them.
  • 0.00015 ⁇ V 3 /V 1 ⁇ 0.0002 which takes into account the volume energy density of the energy storage device 10 , the manufacturing difficulty of the battery cell 21 , and the economic requirements of the battery cell 21 , which is beneficial to improving the volume energy density of the energy storage device 10 and reducing the manufacturing difficulty and manufacturing cost of the battery cell 21 .
  • 0.0026 m 3 ⁇ V 3 ⁇ 0.008 m 3 In some embodiments, 0.0026 m 3 ⁇ V 3 ⁇ 0.008 m 3 .
  • V3 may be 0.0026m3 , 0.0028m3, 0.0031m3 , 0.0035m3 , 0.0038m3 , 0.004m3 , 0.0042m3 , 0.0045m3, 0.0048m3, 0.005m3 , 0.0052m3, 0.0055m3 , 0.0058m3 , 0.006m3, 0.0062m3 , 0.0065m3 , 0.0068m3, 0.007m3 , 0.0072m3, 0.0073m3 , 0.0075m3 , 0.0078m3 . , 0.008m 3 , etc., or any range between any two of them.
  • the volume of the outer shell 211 of the battery cell 21 is relatively large, so that the number of battery cells 21 in the battery compartment 11 is not too large.
  • the volume of the outer shell 211 of the battery cell 21 is not too large, which is beneficial to further improve the volume energy density of the energy storage device 10 and reduce the manufacturing cost of the battery cell 21.
  • 0.004 m 3 ⁇ V 3 ⁇ 0.006 m 3 In some embodiments, 0.004 m 3 ⁇ V 3 ⁇ 0.006 m 3 .
  • V 3 may be 0.004m 3 , 0.0041m 3 , 0.0042m 3 , 0.0043m 3 , 0.0044m 3 , 0.0045m 3 , 0.0046m 3 , 0.0047m 3 , 0.0048m 3 , 0.0049m 3 , 0.005m 3 , 0.0051m 3 , 0.0052m 3 , 0.0053m 3 , 0.0054m 3 , 0.0055m 3 , 0.0056m 3 , 0.0057m 3 , 0.0058m 3 , 0.0059m 3 , 0.006m 3 , Any point value of 3 etc. or the range between any two of them.
  • 0.004 m 3 ⁇ V 3 ⁇ 0.006 m 3 which can control the volume energy density of the energy storage device 10 at a relatively high level and the manufacturing cost of the battery cell 21 at a low level.
  • the volume of the box 1 is V, which satisfies: 0.45 ⁇ V 1 /V ⁇ 0.75.
  • V 1 /V may be any point value of 0.45, 0.48, 0.5, 0.52, 0.55, 0.58, 0.6, 0.62, 0.65, 0.68, 0.7, 0.73, 0.75, etc., or a range of values between any two of them.
  • the length, width and height of the box body 1 can be measured respectively by a measuring tool, and the volume of the box body 1 can be calculated by measuring the length, width and height of the box body 1. It can be understood that the product of the length, width and height of the box body 1 is the volume V of the box body 1.
  • the measuring tool can be a ruler.
  • each box wall of the box body 1 is a plane
  • the length, width and height of the box body 1 are measured with the outer surface of each box wall as a reference
  • the outer surface of a box wall of the box body 1 is formed with a protrusion or a recess
  • the length, width and height of the box body 1 are measured with the plane area of the outer surface of the box wall as a reference.
  • V 1 /V ⁇ 0.45 so that the volume of the battery compartment 11 accounts for a large proportion of the volume of the box 1, increasing the available effective space in the box 1, which is conducive to improving the volume energy density of the energy storage device 10.
  • V 1 /V ⁇ 0.75 so that the volume of the battery compartment 11 is not too large, and the energy storage device 10 can reserve more installation space for other components, reducing the difficulty of installing other components.
  • Other components can be a main control unit, a water cooling unit, etc.
  • V 1 /V may be any point value of 0.55, 0.56, 0.67, 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, etc., or a range value between any two of them.
  • V can be 20m3 , 25m3 , 30m3 , 35m3 , 40m3, 45m3 , 50m3 , 55m3 , 60m3 , 65m3 , 70m3 , 75m3 , 80m3 . Any point value of the above or any range of values between them.
  • V ⁇ 20m 3 makes the volume of the box 1 larger, which is conducive to achieving the large energy requirement of the energy storage device 10 to store more electric energy; V ⁇ 80m 3 makes the volume of the box 1 not too large, which is convenient for handling and transportation of the energy storage device 10 .
  • 35m 3 ⁇ V ⁇ 50m 3 35m 3 ⁇ V ⁇ 50m 3 .
  • V may be any point value of 35m 3 , 36m 3 , 37m 3 , 38m 3 , 39m 3 , 40m 3 , 41m 3 , 42m 3 , 43m 3 , 44m 3 , 45m 3 , 46m 3 , 47m 3 , 48m 3 , 49m 3 , 50m 3 , etc., or a range value between any two of them.
  • 35m 3 ⁇ V ⁇ 50m 3 which can further take into account the large energy of the energy storage device 10 and the convenience of handling and transportation of the energy storage device 10 .
  • the battery compartment 11 contains a plurality of battery cells 21 arranged along the length direction X of the box.
  • the size of the battery compartment 11 is L 1
  • the sum of the sizes of the shells 211 of the plurality of battery cells 21 arranged in the battery compartment 11 is L 2 , satisfying: 0.6 ⁇ L 2 /L 1 ⁇ 0.95.
  • the size of the battery compartment 11 along the length direction X of the box body can be the length of the battery compartment 11, and the size of the battery compartment 11 along the length direction X of the box body can be measured by a ruler.
  • the length direction of the outer shell 211 of the battery cell 21 is parallel to the length direction X of the box body, and the sum of the sizes of the outer shells 211 of the multiple battery cells 21 arranged along the length direction X of the box body in the battery compartment 11 is the sum of the lengths of the outer shells 211 of the multiple battery cells 21, and the size of the battery cell 21 along the length direction X of the box body can be measured by a vernier caliper.
  • two adjacent battery cells 21 can be in direct contact with each other, or an intermediate component, such as a thermal management component, a heat insulating component, etc., can be provided.
  • the sizes of the outer shells 211 of all battery cells 21 arranged along the length direction X of the battery compartment 11 may be all equal, or the sizes of at least two battery cells 21 may be different.
  • L 2 /L 1 may be any point value of 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, etc., or a range value between any two of them.
  • L 2 /L 1 ⁇ 0.6, so that the shells 211 of the multiple battery cells 21 arranged along the length direction X of the box body occupy a relatively large proportion of the size of the battery compartment 11 along the length direction X of the box body, and the space of the battery compartment 11 is fully utilized in the length direction X of the box body, and the gap between the shells 211 of two adjacent battery cells 21 in the length direction X of the box body is reduced, which is conducive to increasing the volume proportion of the shells 211 of all battery cells 21 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • L 2 /L 1 ⁇ 0.95, so that the battery compartment 11 has sufficient installation margins in the length direction X of the box body to install multiple battery cells 21, reducing the difficulty of installing the battery cells 21.
  • L 2 /L 1 may be any point value of 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • 0.75 ⁇ L 2 /L 1 ⁇ 0.9 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery cells 21 in the length direction X of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery cells 21 in the length direction X of the box.
  • N 2 is a positive integer greater than or equal to 2.
  • L 2 L 3 *N 2 , so that the shells 211 of the multiple battery cells 21 have the same size along the length direction X of the box, which can effectively reduce the probability of space waste caused by the different sizes of the shells 211 of the battery cells 21 along the length direction X of the box.
  • multiple battery cells 21 of the same specification can be selected and arranged along the length direction X of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • L 3 /L 1 may be any one of 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, etc., or a range of values between any two of them.
  • L 3 /L 1 ⁇ 0.03, so that the size of the outer shell 211 of the battery cell 21 in the battery compartment 11 along the length direction X of the box body accounts for a large proportion.
  • the size of the battery compartment 11 in the length direction X of the box body is constant, the number of battery cells 21 accommodated in the battery compartment 11 along the length direction X of the box body can be reduced, and the probability of reducing the available effective space due to the excessive number of battery cells 21 is reduced, which is conducive to improving the volume energy density of the energy storage device 10.
  • L 3 /L 1 may be any one of 0.055, 0.06, 0.065, 0.07, 0.075, 0.08, 0.085, 0.09, etc., or a range of values between any two of them.
  • 0.055 ⁇ L 3 /L 1 ⁇ 0.09 which is beneficial to further improve the volume energy density of the energy storage device 10 and reduce the manufacturing cost of the battery cell 21 .
  • L3 can be any point value of 0.17m, 0.2m, 0.25m, 0.3m, 0.35m, 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, etc., or a range value between any two of them.
  • L 3 ⁇ 0.17 m so that the size of the outer shell 211 of the battery cell 21 along the length direction X of the box body is larger, which is beneficial to increase the proportion of the size of the outer shell 211 of the battery cell 21 in the battery compartment 11 along the length direction X of the box body, and is beneficial to improve the volume energy density of the energy storage device 10.
  • L 3 ⁇ 0.6 m so that the size of the outer shell 211 of the battery cell 21 along the length direction X of the box body is not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell 21.
  • L3 can be 0.2m, 0.23m, 0.25m, 0.28m, 0.3m, 0.33m, 0.35m, 0.38m, 0.4m, 0.43m, Any point value of 0.45m, etc. or any range value between the two.
  • the size of the box body 1 is L, which satisfies: 0.65 ⁇ L 1 /L ⁇ 0.95.
  • the dimension of the box body 1 along the length direction is the length of the box body 1, and the length of the box body 1 can be measured with a ruler.
  • L 1 /L may be any point value among 0.65, 0.7, 0.75, 0.8, 0.85, 0.95, etc., or a range value between any two of them.
  • L 1 /L ⁇ 0.65 makes the size of the battery compartment 11 in the box body 1 along the length direction X of the box body account for a larger proportion, increasing the size of the battery compartment 11 along the length direction X of the box body to provide more space for the battery cells 21, which is conducive to improving the volume energy density of the energy storage device 10.
  • L 1 /L ⁇ 0.95 makes the margin of the part of the box body 1 not occupied by the battery compartment 11 in the length direction sufficient, so that the box body 1 has sufficient structural strength.
  • L 1 /L may be any point value of 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • 0.75 ⁇ L 1 /L ⁇ 0.9 can take into account the requirements of the volume energy density of the energy storage device 10 and the structural strength of the housing 1 , which is beneficial to improving the volume energy density of the energy storage device 10 and further improving the structural strength of the housing 1 .
  • 3m ⁇ L ⁇ 9m In some embodiments, 3m ⁇ L ⁇ 9m.
  • L can be any point value of 3m, 3.5m, 4m, 4.5m, 5m, 5.5m, 6m, 6.5m, 7m, 7.5m, 8m, 8.5m, 9m, etc., or a range value between any two of them.
  • L L ⁇ 3m, so that the dimension of the box body 1 along the length direction is larger, and the dimension X of the battery compartment 11 along the length direction of the box body can be enlarged, which is beneficial to increase the dimension proportion of the battery compartment 11 in the box body along the length direction X of the box body, and is beneficial to improve the volume energy density of the energy storage device 10.
  • L ⁇ 9m so that the dimension of the box body 1 along the length direction is not too large, which is convenient for handling and transportation of the energy storage device 10.
  • L can be any point value of 5m, 5.1m, 5.2m, 5.3m, 5.4m, 5.5m, 5.6m, 5.7m, 5.8m, 5.9m, 6m, 6.1m, 6.2m, 6.3m, 6.4m, 6.5m, 6.6m, 6.7m, 6.8m, 6.9m, 7m, etc., or a range value between any two of them.
  • 5m ⁇ L ⁇ 7m which can further take into account the volume energy density of the energy storage device 10 and the convenience of handling and transportation of the energy storage device 10.
  • the battery compartment 11 contains a plurality of battery cells 21 arranged along the width direction Y of the box.
  • the size of the battery compartment 11 is D 1
  • the sum of the sizes of the shells 211 of the plurality of battery cells 21 arranged in the battery compartment 11 is D 2 , satisfying: 0.6 ⁇ D 2 /D 1 ⁇ 0.95.
  • the size of the battery compartment 11 along the width direction Y of the box can be the width of the battery compartment 11, and the size of the battery compartment 11 along the width direction Y of the box can be measured by a ruler.
  • the width direction of the outer shell 211 of the battery cell 21 is parallel to the width direction Y of the box, and the sum of the sizes of the outer shells 211 of the multiple battery cells 21 arranged along the width direction Y of the box in the battery compartment 11 is the sum of the widths of the outer shells 211 of the multiple battery cells 21, and the size of the battery cell 21 along the width direction Y of the box can be measured by a vernier caliper.
  • two adjacent battery cells 21 can be in direct contact with each other, or an intermediate component, such as a thermal management component, a heat insulating component, etc., can be provided.
  • the sizes of the outer shells 211 of all battery cells 21 arranged along the width direction Y of the battery compartment 11 may be all equal, or the sizes of at least two battery cells 21 may be different.
  • D 2 /D 1 may be any point value of 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, etc., or a range value between any two of them.
  • D 2 /D 1 ⁇ 0.6, so that the shells 211 of the multiple battery cells 21 arranged along the width direction of the box body 1 account for a large proportion of the size of the battery compartment 11 along the width direction Y of the box body, and the space of the battery compartment 11 is fully utilized in the width direction Y of the box body, and the gap between the shells 211 of two adjacent battery cells 21 in the width direction Y of the box body is reduced, which is conducive to increasing the volume proportion of the shells 211 of all battery cells 21 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • D 2 /D 1 ⁇ 0.95, so that the battery compartment 11 has sufficient installation margins in the width direction Y of the box body to install multiple battery cells 21, reducing the difficulty of installing the battery cells 21.
  • D 2 /D 1 may be any point value of 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • 0.75 ⁇ D 2 /D 1 ⁇ 0.9 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery cells 21 in the width direction Y of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery cells 21 in the width direction Y of the box.
  • N 3 is a positive integer greater than or equal to 2.
  • D 2 D 3 *N 3 , so that the shells 211 of the plurality of battery cells 21 have the same size along the width direction Y of the box, which can effectively reduce the probability of space waste caused by the different sizes of the shells 211 of the battery cells 21 along the width direction Y of the box.
  • a plurality of battery cells 21 of the same specification can be selected and arranged along the width direction Y of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • D 3 /D 1 may be any point value of 0.02, 0.025, 0.03, 0.035, 0.04, 0.045, 0.05, etc., or a range value between any two of them.
  • D 3 /D 1 ⁇ 0.02 so that the outer shell 211 of the battery cell 21 occupies a larger proportion in the battery compartment 11 along the width direction Y of the box body.
  • the size of the battery compartment 11 in the width direction Y of the box body is constant, the space of the battery compartment 11 accommodated in the width direction Y of the box body can be reduced.
  • the number of battery cells 21 is reduced, and the probability of reducing the available effective space due to the excessive number of battery cells 21 is reduced, which is beneficial to improving the volume energy density of the energy storage device 10.
  • D 3 /D 1 may be any point value of 0.032, 0.033, 0.034, 0.035, 0.036, 0.037, 0.038, 0.039, 0.04, etc., or a range value between any two of them.
  • D3 can be any point value of 0.04m, 0.05m, 0.06m, 0.07m, 0.08m, 0.09m, 0.1m, 0.11m, 0.12m, etc., or a range value between any two of them.
  • D 3 ⁇ 0.04m, so that the outer shell 211 of the battery cell 21 has a larger dimension along the width direction Y of the box body, which is beneficial to increase the proportion of the outer shell 211 of the battery cell 21 in the battery compartment 11 along the width direction Y of the box body, and is beneficial to improve the volume energy density of the energy storage device 10.
  • D 3 ⁇ 0.12m, so that the outer shell 211 of the battery cell 21 does not have a too large dimension along the width direction Y of the box body, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell 21.
  • D3 can be any point value of 0.06m, 0.061m, 0.062m, 0.063m, 0.064m, 0.065m, 0.066m, 0.067m, 0.068m, 0.069m, 0.07m, 0.071m, 0.07m, 0.073m, 0.074m, 0.075m, 0.076m, 0.077m, 0.078m, 0.079m, 0.08m, etc., or a range value between any two of them.
  • 0.06 m ⁇ D 3 ⁇ 0.08 m which is beneficial to further improve the volume energy density of the energy storage device 10 and reduce the manufacturing cost of the battery cell 21 .
  • the dimension of the box body 1 is D, which satisfies: 0.65 ⁇ D 1 /D ⁇ 0.99.
  • the dimension of the box body 1 along the width direction is the width of the box body 1, and the width of the box body 1 can be measured with a ruler.
  • D 1 /D may be any point value of 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 0.99, etc., or a range value between any two of them.
  • D 1 /D ⁇ 0.65 makes the size of the battery compartment 11 in the box body 1 along the width direction Y of the box body account for a large proportion, and the size of the battery compartment 11 along the width direction Y of the box body is increased to provide more space for the battery cells 21, which is conducive to improving the volume energy density of the energy storage device 10.
  • D 1 /D ⁇ 0.95 makes the margin of the part of the box body 1 not occupied by the battery compartment 11 in the width direction sufficient, so that the box body 1 has sufficient structural strength.
  • D 1 /D may be any point value of 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, etc., or a range value between any two of them.
  • D can be any point value of 1.5m, 1.8m, 2m, 2.3m, 2.5m, 2.8m, 3m, 3.2m, 3.5m, etc., or a range value between any two of them.
  • D 1.5m
  • the dimension of the box body 1 along the width direction is larger
  • the dimension of the battery compartment 11 along the width direction Y of the box body can be enlarged, which is beneficial to increase the dimension proportion of the battery compartment 11 in the box body 1 along the width direction Y of the box body, and is beneficial to improve the volume energy density of the energy storage device 10.
  • L ⁇ D ⁇ 3.5m so that the dimension of the box body 1 along the width direction is not too large, which is convenient for handling and transportation of the energy storage device 10.
  • D can be any point value of 2m, 2.1m, 2.2m, 2.3m, 2.4m, 2.5m, 2.6m, 2.7m, 2.8m, 2.9m, 3m, etc., or a range value between any two of them.
  • 2m ⁇ D ⁇ 3m which can further take into account the volume energy density of the energy storage device 10 and the convenience of handling and transportation of the energy storage device 10.
  • the battery compartment 11 contains a plurality of battery cells 21 arranged along the height direction Z of the box.
  • the size of the battery compartment 11 is H1
  • the sum of the sizes of the shells 211 of the plurality of battery cells 21 arranged in the battery compartment 11 is H2 , satisfying: 0.6 ⁇ H2 / H1 ⁇ 0.95 .
  • the dimension of the battery compartment 11 along the height direction Z of the box body can be the height of the battery compartment 11, and the dimension of the battery compartment 11 along the height direction Z of the box body can be measured by a ruler.
  • the height direction of the outer shell 211 of the battery cell 21 is parallel to the height direction Z of the box body, and the sum of the dimensions of the outer shells 211 of the multiple battery cells 21 arranged along the height direction Z of the box body in the battery compartment 11 is the sum of the heights of the outer shells 211 of the multiple battery cells 21, and the dimension of the battery cell 21 along the height direction Z of the box body can be measured by a vernier caliper.
  • two adjacent battery cells 21 can be in direct contact with each other, or an intermediate component, such as a thermal management component, a heat insulating component, etc., can be provided.
  • the sizes of the outer shells 211 of all battery cells 21 arranged along the height direction Z of the battery compartment 11 may be all equal, or the sizes of at least two battery cells 21 may be different.
  • H 2 /H 1 may be any point value of 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, etc., or a range value between any two of them.
  • H 2 /H 1 ⁇ 0.6, so that the shells 211 of the multiple battery cells 21 arranged along the height direction of the box body 1 account for a larger proportion of the size of the battery compartment 11 along the height direction Z of the box body, and the space of the battery compartment 11 is fully utilized in the height direction Z of the box body, and the gap between the shells 211 of two adjacent battery cells 21 in the height direction Z of the box body is reduced, which is conducive to increasing the volume proportion of the shells 211 of all battery cells 21 in the battery compartment 11.
  • This is beneficial to improving the volume energy density of the energy storage device 10.
  • H 2 /H 1 ⁇ 0.95, so that the battery compartment 11 has sufficient installation margins in the height direction Z of the box body to install multiple battery cells 21, reducing the difficulty of installing the battery cells 21.
  • H2 / H1 may be any one of 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.80, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range between any two of them.
  • 0.7 ⁇ H 2 /H 1 ⁇ 0.9 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery cells 21 in the height direction Z of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery cells 21 in the height direction Z of the box.
  • N 4 is a positive integer greater than or equal to 2.
  • D 2 D 3 *N 3 , so that the shells 211 of the plurality of battery cells 21 have the same size along the height direction Z of the box, which can effectively reduce the probability of space waste caused by the different sizes of the shells 211 of the battery cells 21 along the height direction Z of the box.
  • a plurality of battery cells 21 of the same specification can be selected and arranged along the height direction Z of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • H 3 /H 1 may be any point value of 0.07, 0.075, 0.08, 0.085, 0.09, 0.095, 0.1, 0.11, 0.12, etc., or a range of values between any two of them.
  • H 3 /H 1 ⁇ 0.07, so that the size of the outer shell 211 of the battery cell 21 in the battery compartment 11 along the height direction Z of the box body accounts for a large proportion.
  • the size of the battery compartment 11 in the height direction Z of the box body is constant, the number of battery cells 21 accommodated in the battery compartment 11 along the height direction Z of the box body can be reduced, and the probability of reducing the available effective space due to the excessive number of battery cells 21 is reduced, which is conducive to improving the volume energy density of the energy storage device 10.
  • H3 / H1 can be any one of 0.08, 0.081, 0.082, 0.083, 0.084, 0.085, 0.086, 0.087, 0.088, 0.088, 0.089, 0.09, 0.091, 0.092, 0.093, 0.094, 0.095, 0.096, 0.097, 0.098, 0.099, 0.1, etc., or a range between any two of them.
  • 0.08 ⁇ H 3 /H 1 ⁇ 0.1 which is beneficial to further improve the volume energy density of the energy storage device 10 and reduce the manufacturing cost of the battery cell 21 .
  • H3 can be any point value of 0.17m, 0.2m, 0.25m, 0.3m, 0.35m, 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, etc., or a range value between any two of them.
  • H 3 ⁇ 0.17m, so that the size of the outer shell 211 of the battery cell 21 along the height direction Z of the box is larger, which is beneficial to increase the proportion of the size of the outer shell 211 of the battery cell 21 in the battery compartment 11 along the height direction Z of the box, and is beneficial to improve the volume energy density of the energy storage device 10.
  • H 3 ⁇ 0.6m, so that the size of the outer shell 211 of the battery cell 21 along the height direction Z of the box is not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell 21.
  • H3 can be any point value of 0.2m, 0.23m, 0.25m, 0.28m, 0.3m, 0.33m, 0.35m, 0.38m, 0.4m, 0.43m, 0.45m, etc., or a range value between any two of them.
  • 0.2 m ⁇ H 3 ⁇ 0.45 m which is beneficial to further improve the volume energy density of the energy storage device 10 and reduce the manufacturing cost of the battery cell 21 .
  • the size of the box body 1 is H, which satisfies: 0.55 ⁇ H 1 /H ⁇ 0.85.
  • the dimension of the box body 1 along the height direction is the height of the box body 1, and the height of the box body 1 can be measured by using a ruler.
  • H 1 /H may be any point value of 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, etc., or a range value between any two of them.
  • H 1 /H ⁇ 0.55 makes the size of the battery compartment 11 in the box body 1 along the height direction Z of the box body account for a large proportion, and the size of the battery compartment 11 along the height direction Z of the box body is increased to provide more space for the battery cells 21, which is conducive to improving the volume energy density of the energy storage device 10.
  • H 1 /H ⁇ 0.85 makes the margin of the part of the box body 1 not occupied by the battery compartment 11 in the height direction sufficient, so that the box body 1 has sufficient structural strength.
  • H 1 /H may be any point value of 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, etc., or a range value between any two of them.
  • H can be any point value of 1.5m, 1.8m, 2m, 2.3m, 2.5m, 2.8m, 3m, 3.2m, 3.5m, etc., or a range value between any two of them.
  • H 1.5m, so that the dimension of the box body 1 along the height direction is larger, and the dimension Z of the battery compartment 11 along the height direction of the box body can be enlarged, which is beneficial to increase the dimension proportion of the battery compartment 11 in the box body along the height direction Z of the box body, and is beneficial to improve the volume energy density of the energy storage device 10.
  • H ⁇ 3.5m, so that the dimension of the box body 1 along the height direction is not too large, which is convenient for handling and transportation of the energy storage device 10.
  • H can be any point value of 2m, 2.1m, 2.2m, 2.3m, 2.4m, 2.5m, 2.6m, 2.7m, 2.8m, 2.9m, 3m, etc., or a range value between any two of them.
  • 2m ⁇ H ⁇ 3m which can further take into account the volume energy density of the energy storage device 10 and the convenience of handling and transportation of the energy storage device 10.
  • Figure 7 is a schematic diagram of the structure of the energy storage device 10 provided in some embodiments of the present application
  • Figure 8 is a B-B cross-sectional view of the energy storage device 10 shown in Figure 7
  • Figure 9 is an exploded view of the battery 2 provided in some embodiments of the present application.
  • the battery compartment 11 contains at least one battery 2, and the battery 2 includes a plurality of battery cells 21.
  • the battery 2 in the battery compartment 11 may be one or more.
  • the box 1 and the battery 2 are both in the shape of a rectangular parallelepiped.
  • one of the length direction, width direction, and height direction of the battery 2 may be parallel to the length direction X of the box, another may be parallel to the width direction Y of the box, and another may be parallel to the height direction Z of the box.
  • the length direction of the battery 2 is parallel to the width direction Y of the box
  • the width direction of the battery 2 is parallel to the length direction X of the box
  • the height direction of the battery 2 is parallel to the height direction Z of the box.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2; along the width direction Y of the box body, the battery compartment 11 can accommodate one battery 2 or multiple batteries 2; along the height direction Z of the box body, the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery 2 may be a battery module, which may be a battery module formed by arranging and fixing a plurality of battery cells 21.
  • a frame may be formed by two side plates and two end plates, and a plurality of battery cells 21 may be fixed in the frame to form a battery module.
  • the battery 2 may be a battery pack, and the battery 2 further includes a battery box 22, in which a plurality of battery cells 21 are accommodated.
  • the battery box 22 may include a first portion 221 and a second portion 222, and the first portion 221 and the second portion 222 cover each other to define an accommodation space for accommodating the battery cells 21.
  • the first portion 221 and the second portion 222 may be in various shapes, such as a rectangular parallelepiped, a cylindrical shape, etc.
  • the first portion 221 may be a hollow structure with one side open, and the second portion 222 may also be a hollow structure with one side open, and the open side of the second portion 222 covers the open side of the first portion 221, thereby forming a battery box 22 with an accommodation space.
  • the first portion 221 may be a hollow structure with one side open, and the second portion 222 may be a plate-like structure, and the second portion 222 covers the open side of the first portion 221, thereby forming a battery box 22 with an accommodation space.
  • the first part 221 and the second part 222 can be sealed by a sealing element, and the sealing element can be a sealing ring, a sealant, etc.
  • multiple battery cells 21 may be assembled into a battery 2 first, and then the battery 2 may be installed in the battery compartment 11.
  • the battery 2 composed of multiple battery cells 21 is larger in size and easier to install in the battery compartment 11, thus achieving high assembly efficiency.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the length direction X of the box.
  • the size of the battery compartment 11 is L 1
  • the sum of the sizes of the plurality of batteries 2 arranged in the battery compartment 11 is L 4 , satisfying: 0.7 ⁇ L 4 /L 1 ⁇ 0.96.
  • the width direction of the battery 2 is parallel to the length direction X of the box, and the sum of the sizes of the multiple batteries 2 arranged in the battery compartment 11 along the length direction X of the box is the sum of the widths of the multiple batteries 2.
  • the size of the battery 2 in the length direction X of the box can be measured by a ruler.
  • the sizes of the multiple batteries 2 arranged along the length direction X of the battery compartment 11 may all be equal, or the sizes of at least two batteries 2 may be unequal.
  • L 4 /L 1 may be any point value of 0.7, 0.75, 0.8, 0.85, 0.9, 0.96, etc., or a range value between any two of them.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the length direction X of the box body, so that the size of a single battery 2 along the length direction X of the box body is not too large, reducing the manufacturing difficulty and installation difficulty of the battery 2.
  • L 4 /L 1 ⁇ 0.7 so that the size of the plurality of batteries 2 arranged along the length direction X of the box body in the battery compartment 11 along the length direction X of the box body accounts for a large proportion, and the space of the battery compartment 11 is fully utilized in the length direction X of the box body, and the gap between two adjacent batteries 2 in the length direction X of the box body is reduced, which is conducive to increasing the volume proportion of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • L 4 /L 1 may be any point value of 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, etc., or a range value between any two of them.
  • 0.78 ⁇ L 4 /L 1 ⁇ 0.91 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the length direction X of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the length direction X of the box.
  • the size of each battery 2 is L 5
  • N5 is a positive integer greater than or equal to 2.
  • L 4 L 5 *N 5 , so that the dimensions of the multiple batteries 2 along the length direction X of the box are equal, which can effectively reduce the probability of space waste caused by different dimensions of the batteries 2 along the length direction X of the box.
  • multiple batteries 2 of the same specification can be selected and arranged along the length direction X of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • L5 can be any point value of 1m, 1.05m, 1.1m, 1.15m, 1.2m, 1.25m, 1.3m, 1.35m, 1.4m, 1.45m, 1.5m, etc., or a range value between any two of them.
  • N5 can be 2, 3, 4, 5 or 6.
  • the size of each battery 2 is relatively large, and the number of batteries 2 is not too large, which can reduce the space occupied by other components of the battery 2 except the battery cell 21 (for example, the box wall of the battery box 22), which is beneficial to increase the size proportion of the multiple batteries 2 arranged along the length direction X of the box body in the battery compartment 11 along the length direction X of the box body.
  • Figure 10 is a schematic diagram of the structure of an energy storage device 10 provided in some embodiments of the present application.
  • the battery compartment 11 only accommodates one battery 2, the size of the battery compartment 11 is L1 , and the size of the battery 2 is L5 , satisfying: 0.8 ⁇ L5 / L1 ⁇ 0.99 .
  • the length direction of the battery 2 is parallel to the length direction X of the box
  • the width direction of the battery 2 is parallel to the width direction Y of the box
  • the height direction of the battery 2 is parallel to the height direction Z of the box.
  • the dimension of the battery 2 along the length direction X of the box is the length of the battery 2.
  • L 5 /L 1 may be any one of 0.8, 0.83, 0.85, 0.88, 0.9, 0.93, 0.95, 0.97, 0.99, etc., or a range of values between any two of them.
  • the battery compartment 11 only accommodates one battery 2 along the length direction X of the box, which is conducive to improving the utilization rate of the space of the battery compartment 11 along the length direction X of the box.
  • L 5 /L 1 ⁇ 0.8 so that the size of the battery 2 in the battery compartment 11 along the length direction X of the box is relatively large, and the space of the battery compartment 11 is fully utilized in the length direction X of the box, which is conducive to improving the volume ratio of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • L 5 /L 1 ⁇ 0.99, so that the battery compartment 11 has sufficient installation margin for installing the battery 2 in the length direction X of the box, reducing the difficulty of installing the battery 2.
  • L 5 /L 1 may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, etc., or a range value between any two of them.
  • 0.85 ⁇ L 5 /L 1 ⁇ 0.93 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the length direction X of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the length direction X of the box.
  • L5 can be any point value of 4m, 4.5m, 5m, 5.5m, 6m, 6.5m, 7m, 7.5m, 8m, etc., or a range value between any two of them.
  • L 5 ⁇ 4 m so that the size of the battery 2 along the length direction X of the box is larger, and more battery cells 21 can be arranged in the battery 2 along the length direction X of the box, which can meet the large energy requirement of the energy storage device 10;
  • L 5 ⁇ 8 m so that the size of the battery 2 along the length direction X of the box is not too large, reducing the difficulty of manufacturing and installing the battery 2.
  • L 5 can be any point value of 5.5m, 5.6m, 5.7m, 5.8m, 5.9m, 6m, 6.1m, 6.2m, 6.3m, 6.4m, 6.5m, 6.6m, 6.7m, 6.8m, etc., or a range value between any two of them.
  • FIG. 11 is a CC cross-sectional view of the energy storage device 10 shown in FIG.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the width direction Y of the box. Along the width direction Y of the box, the size of the battery compartment 11 is D1 , and the sum of the sizes of the plurality of batteries 2 arranged in the battery compartment 11 is D4 , satisfying: 0.7 ⁇ D4 / D1 ⁇ 0.96 .
  • the width direction of the battery 2 is parallel to the width direction Y of the box, and the sum of the sizes of the multiple batteries 2 arranged along the width direction Y of the box in the battery compartment 11 is the sum of the widths of the multiple batteries 2.
  • the size of the battery 2 in the width direction Y of the box can be measured by a ruler.
  • the sizes of the multiple batteries 2 arranged in the width direction Y of the battery compartment 11 may all be equal, or the sizes of at least two batteries 2 may be unequal.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • D 4 /D 1 may be any point value of 0.7, 0.75, 0.8, 0.85, 0.9, 0.96, etc., or a range of values between any two of them.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the width direction Y of the box body, so that the size of a single battery 2 along the width direction Y of the box body is not too large, reducing the manufacturing difficulty and installation difficulty of the battery 2.
  • D 4 /D 1 ⁇ 0.7 so that the size of the plurality of batteries 2 arranged along the width direction Y of the box body in the battery compartment 11 along the width direction Y of the box body accounts for a large proportion, and the space of the battery compartment 11 is fully utilized in the width direction Y of the box body, and the gap between two adjacent batteries 2 in the width direction Y of the box body is reduced, which is conducive to increasing the volume proportion of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • D 4 /D 1 may be any point value of 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, etc., or a range value between any two of them.
  • 0.78 ⁇ D 4 /D 1 ⁇ 0.91 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the width direction Y of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the width direction Y of the box.
  • the size of each battery 2 is D 5
  • N 6 is a positive integer greater than or equal to 2.
  • D 4 D 5 *N 6 , so that the dimensions of the multiple batteries 2 along the width direction Y of the box are equal, which can effectively reduce the probability of space waste caused by different dimensions of the batteries 2 along the width direction Y of the box.
  • multiple batteries 2 of the same specification can be selected and arranged along the width direction Y of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • D5 can be any point value of 1m, 1.05m, 1.1m, 1.15m, 1.2m, 1.25m, 1.3m, 1.35m, 1.4m, 1.45m, 1.5m, etc., or a range value between any two of them.
  • the value of N6 can be 2 or 3.
  • the size of each battery 2 is relatively large, and the number of batteries 2 is not too large, which can reduce the space occupied by other components of the battery 2 except the battery cell 21 (for example, the box wall of the battery box 22), which is beneficial to increase the size proportion of the multiple batteries 2 arranged along the width direction Y of the box body in the battery compartment 11 along the width direction Y of the box body.
  • the battery compartment 11 only accommodates one battery 2, and the size of the battery compartment 11 is The size of the battery 2 is D 1 , the size of the battery 2 is D 5 , and the relationship: 0.8 ⁇ D 5 /D 1 ⁇ 0.99 is satisfied.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 accommodates multiple batteries 2 along the length direction X of the box body, the length direction of the battery 2 is parallel to the width direction Y of the box body, the width direction of the battery 2 is parallel to the length direction X of the box body, and the height direction of the battery 2 is parallel to the height direction Z of the box body.
  • the dimension of the battery 2 along the width direction Y of the box body is the length of the battery 2.
  • D 5 /D 1 may be any point value of 0.8, 0.83, 0.85, 0.88, 0.9, 0.93, 0.95, 0.97, 0.99, etc., or a range of values between any two of them.
  • the battery compartment 11 only accommodates one battery 2 along the width direction Y of the box body, which is conducive to improving the utilization rate of the space of the battery compartment 11 along the width direction Y of the box body.
  • D 5 /D 1 ⁇ 0.8 so that the size of the battery 2 in the battery compartment 11 along the width direction Y of the box body accounts for a large proportion, and the space of the battery compartment 11 is fully utilized in the width direction Y of the box body, which is conducive to improving the volume proportion of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • D 5 /D 1 ⁇ 0.99, so that the battery compartment 11 has sufficient installation margin for installing the battery 2 in the width direction Y of the box body, reducing the difficulty of installing the battery 2.
  • D 5 /D 1 may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, etc., or a range value between any two of them.
  • 0.85 ⁇ D 5 /D 1 ⁇ 0.93 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the width direction Y of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the width direction Y of the box.
  • D5 can be any point value of 1.5m, 1.7m, 1.9m, 2.1m, 2.3m, 2.5m, etc., or a range value between any two of them.
  • D 5 ⁇ 1.5 m, so that the size of the battery 2 along the width direction Y of the box body is larger, and more battery cells 21 can be arranged in the battery 2 along the width direction Y of the box body, which can meet the large energy requirement of the energy storage device 10; D 5 ⁇ 2.5 m, so that the size of the battery 2 along the width direction Y of the box body is not too large, reducing the difficulty of manufacturing and installing the battery 2.
  • D5 can be any point value of 1.7m, 1.8m, 1.9m, 2.m, 2.1m, 2.2m, 2.3m, etc., or a range value between any two of them.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the height direction Z of the box.
  • the size of the battery compartment 11 is H 1
  • the sum of the sizes of the plurality of batteries 2 arranged in the battery compartment 11 is H 4 , satisfying: 0.6 ⁇ H 4 /H 1 ⁇ 0.99.
  • the height direction of the battery 2 is parallel to the height direction Z of the box.
  • the sum of the sizes of the multiple batteries 2 arranged along the height of the box 1 in the battery compartment 11 is the sum of the heights of the multiple batteries 2.
  • the size of the battery 2 in the height direction Z of the box can be measured by a ruler.
  • the sizes of the multiple batteries 2 arranged along the height direction Z of the battery compartment 11 may all be equal, or the sizes of at least two batteries 2 may be unequal.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 accommodates multiple batteries 2 along the length direction X of the box body, and the battery compartment 11 accommodates one battery 2 along the width direction Y of the box body; in the embodiments shown in Figures 10 and 11, the battery compartment 11 accommodates one battery 2 along the length direction X of the box body, and the battery compartment 11 accommodates multiple batteries 2 along the width direction Y of the box body.
  • H 4 /H 1 may be any point value of 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, 0.99, etc., or a range of values between any two of them.
  • the battery compartment 11 contains a plurality of batteries 2 arranged along the height direction Z of the box body, so that the size of a single battery 2 along the height direction Z of the box body is not too large, reducing the manufacturing difficulty and installation difficulty of the battery 2.
  • H 4 /H 1 ⁇ 0.6 so that the size of the plurality of batteries 2 arranged along the height direction Z of the box body in the battery compartment 11 along the height direction Z of the box body accounts for a large proportion, and the space of the battery compartment 11 is fully utilized in the height direction Z of the box body, and the gap between two adjacent batteries 2 in the height direction Z of the box body is reduced, which is conducive to increasing the volume proportion of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • H 4 /H 1 ⁇ 0.99 so that the battery compartment 11 has sufficient installation margin in the height direction Z of the box body to install multiple batteries 2, reducing the installation difficulty of the battery 2.
  • H4 / H1 may be any one of 0.7, 0.71, 0.72, 0.73, 0.74, 0.75, 0.76, 0.77, 0.78, 0.79, 0.8, 0.81, 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, etc., or a range of values between any two of them.
  • 0.7 ⁇ H 4 /H 1 ⁇ 0.92 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the height direction Z of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the height direction Z of the box.
  • the size of each battery 2 is H 5
  • N 7 is a positive integer greater than or equal to 2.
  • H 4 H 5 *N 7 , so that the dimensions of the multiple batteries 2 along the height direction Z of the box are equal, which can effectively reduce the probability of space waste caused by different dimensions of the batteries 2 along the height direction Z of the box.
  • multiple batteries 2 of the same specification can be selected and arranged along the height direction Z of the box, thereby improving the assembly efficiency of the energy storage device 10 and reducing the manufacturing cost of the energy storage device 10.
  • H5 can be any point value of 0.21m, 0.22m, 0.23m, 0.24m, 0.25m, 0.26m, 0.27m, 0.28m, 0.29m, 0.3m, etc., or a range value between any two of them.
  • N7 can be 2, 3, 3, 4, 5, 6, 7, 8, 9 or 10.
  • the size of each battery 2 is relatively large, and the number of batteries 2 is not too large, which can reduce the space occupied by other components of the battery 2 except the battery cell 21 (for example, the box wall of the battery box 22), which is beneficial to increase the size proportion of the multiple batteries 2 arranged along the height direction Z of the box body in the battery compartment 11 along the height direction Z of the box body.
  • Figure 12 is a cross-sectional view of an energy storage device 10 provided in some embodiments of the present application.
  • the battery compartment 11 only accommodates one battery 2, the size of the battery compartment 11 is H1 , and the size of the battery 2 is H5 , satisfying: 0.8 ⁇ H5 / H1 ⁇ 0.99 .
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 can accommodate one battery 2 or multiple batteries 2.
  • the battery compartment 11 accommodates multiple batteries 2 along the width direction Y of the box, and the battery compartment 11 accommodates multiple batteries 2 along the length direction X of the box.
  • H 5 /H 1 may be any point value of 0.8, 0.83, 0.85, 0.88, 0.9, 0.93, 0.95, 0.97, 0.99, etc., or a range of values between any two of them.
  • the battery compartment 11 only accommodates one battery 2 along the height direction Z of the box, which is conducive to improving the utilization rate of the space of the battery compartment 11 along the height direction Z of the box.
  • H 5 /H 1 ⁇ 0.8 so that the size of the battery 2 in the battery compartment 11 along the height direction Z of the box is relatively large, and the space of the battery compartment 11 is fully utilized in the height direction Z of the box, which is conducive to improving the volume ratio of all batteries 2 in the battery compartment 11, and is conducive to improving the volume energy density of the energy storage device 10.
  • H 5 /H 1 ⁇ 0.99 so that the battery compartment 11 has sufficient installation margin for installing the battery 2 in the height direction Z of the box, reducing the difficulty of installing the battery 2.
  • H 5 /H 1 may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, etc., or a range value between any two of them.
  • 0.85 ⁇ H 5 /H 1 ⁇ 0.93 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the height direction Z of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the height direction Z of the box.
  • H5 can be any point value among 1.5m, 1.7m, 1.9m, 2.1m, 2.3m, 2.5m, etc., or a range value between any two of them.
  • H 5 ⁇ 1.5 m so that the size of the battery 2 along the height direction Z of the box is larger, and the size of the battery cell 21 in the battery 2 along the height direction Z of the box is larger, which can meet the large energy requirement of the energy storage device 10; H 5 ⁇ 2.5 m, so that the size of the battery 2 along the height direction Z of the box is not too large, reducing the difficulty of manufacturing and installing the battery 2.
  • H5 can be any point value of 1.7m, 1.8m, 1.9m, 2.m, 2.1m, 2.2m, 2.3m, etc., or a range value between any two of them.
  • Figure 13 is a structural view of an energy storage device 10 provided in some embodiments of the present application
  • Figure 14 is a structural schematic diagram of the box body 1 shown in Figure 13.
  • the battery compartment 11 includes a plurality of sub-compartments 111, and the plurality of sub-compartments 111 are arranged along the length direction X of the box body, and each sub-compartment 111 contains at least one battery 2.
  • the partition 112 may be a partition plate disposed between the two sub-compartments 111, or a partition beam disposed between the two sub-compartments 111.
  • the partition beam may extend along the height direction Z of the box.
  • the sub-compartment 111 may be in various shapes, such as cylindrical or prism-shaped.
  • the prism may be a triangular prism, a quadrangular prism, a pentagonal prism, a hexagonal prism, etc.
  • the sub-compartment 111 is in the shape of a quadrangular prism, specifically, the sub-compartment 111 is in the shape of a cuboid.
  • the sub-compartment 111 may contain one battery 2 or multiple batteries 2.
  • the battery compartment 11 is divided into a plurality of sub-compartments 111 , each of which can accommodate a battery 2 , so that the battery 2 can be more regularly accommodated in the battery compartment 11 , making it easier to install the battery 2 .
  • the volume of the sub-compartment 111 is V 4
  • the sum of the volumes of the batteries 2 in the sub-compartment 111 is V 5 , satisfying 0.75 ⁇ V 5 /V 4 ⁇ 0.95.
  • the volume of the sub-compartment 111 can be measured in a variety of ways.
  • the sub-compartment 111 is a rectangular parallelepiped, and the length, width and height of the sub-compartment 111 can be measured by a measuring tool, and the volume V 4 of the sub-compartment 111 can be calculated by measuring the length, width and height of the sub-compartment 111.
  • the product of the length, width and height of the sub-compartment 111 is V 4 , wherein the measuring tool can be a ruler.
  • the volume of the sub-compartment 111 can be measured by a filling method.
  • the specific method is as follows: fill the sub-compartment 111 with plastic pellets, the material of the plastic pellets can be PP (polypropylene) or PE (polyethylene), the particle size is 0.5mm-1.5mm, and the density is 0.94g/cm 3 -0.96g/cm 3 ; measure the total volume of the plastic pellets in the sub-compartment 111 by a measuring container, and thus obtain the volume of the sub-compartment 111.
  • the multiple batteries 2 in the sub-compartment 111 may be connected in series, in parallel, or in mixed connection. Mixed connection means that the multiple batteries 2 are connected in series and in parallel.
  • the sub-compartment 111 may accommodate one battery 2 or multiple batteries 2; along the width direction X of the box, the sub-compartment 111 may accommodate one battery 2 or multiple batteries 2.
  • the sub-compartment 111 can accommodate one battery 2 or multiple batteries 2; along the height direction Z of the box body, the sub-compartment 111 can accommodate one battery 2 or multiple batteries 2.
  • V 5 is the sum of the volumes of all the batteries 2 in the sub-compartment 111. If the volumes of all the batteries 2 in the sub-compartment 111 are equal, the volume of one battery 2 may be measured, and then the volume of the battery 2 may be multiplied by the number of batteries 2 in the sub-compartment 111 to obtain V 5 .
  • the volume of the first type of battery 2 may be measured first, and the volume of the first type of battery 2 may be multiplied by the number of the first type of battery 2 in the sub-compartment 111 to obtain a third total volume, and then the volume of the second type of battery 2 may be measured, and the volume of the second type of battery 2 may be multiplied by the number of the second type of battery 2 in the sub-compartment 111 to obtain a fourth total volume.
  • the sum of the third total volume and the fourth total volume is V 5 .
  • the volume of the battery 2 can be measured in a variety of ways.
  • the length, width and height of the battery 2 can be measured by a measuring tool, and the volume of the battery 2 can be calculated by measuring the length, width and height of the battery 2. It can be understood that the product of the length, width and height of the battery 2 is the volume of the battery 2, wherein the measuring tool can be a ruler.
  • each outer surface of the battery 2 is a plane
  • the length, width and height of the battery 2 are measured based on each outer surface; if a certain outer surface of the battery 2 is formed with a protrusion or a recess, the length, width and height of the battery 2 are measured based on the plane area of the outer surface.
  • the volume of the battery 2 can be measured by the immersion method.
  • the specific method is as follows: inject liquid into the measuring container and record the volume value X 3 corresponding to the liquid surface, gradually immerse the battery 2 into the liquid until the battery 2 is completely immersed in the liquid, and record the volume value X 4 corresponding to the liquid surface at this time, and X 4 -X 3 is the volume of the battery 2.
  • V 5 /V 4 may be any point value of 0.75, 0.78, 0.8, 0.82, 0.85, 0.87, 0.9, 0.92, 0.95, etc., or a range value between any two of them.
  • V 5 /V 4 ⁇ 0.75, so that the volume proportion of all batteries 2 in the sub-compartment 111 is relatively large, thereby improving the space utilization of the sub-compartment 111, which is beneficial to improving the volume energy density of the energy storage device 10.
  • V 5 /V 4 may be any point value of 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • 0.82 ⁇ V 5 /V 4 ⁇ 0.9 which takes into account both the volume energy density requirement and the economic requirement of the energy storage device 10 , and is beneficial to further reduce the manufacturing cost of the energy storage device 10 and improve the volume energy density of the energy storage device 10 .
  • the sub-compartment 111 only accommodates one battery 2.
  • the space occupied by other components of the battery 2 for example, the box wall of the battery box 22
  • the battery cell 21 can be reduced, which is conducive to increasing the proportion of the battery 2 in the sub-compartment 111 along the length direction X of the box body, and is conducive to improving the utilization rate of the space of the sub-compartment 111 along the length direction X of the box body.
  • the size of the sub-compartment 111 is L 6
  • the size of the battery 2 is L 5 , which satisfies: 0.85 ⁇ L 5 /L 6 ⁇ 0.99.
  • the sub-compartment 111 and the battery 2 are in a rectangular shape
  • the length direction of the sub-compartment 111 and the length direction of the battery 2 are parallel to the width direction Y of the box
  • the width direction of the sub-compartment 111 and the width direction of the battery 2 are parallel to the length direction X of the box
  • the height direction of the sub-compartment 111 and the height direction of the battery 2 are parallel to the height direction Z of the box.
  • the size of the sub-compartment 111 along the length direction X of the box is the width of the sub-compartment 111
  • the size of the battery 2 along the length direction X of the box is the width of the battery 2.
  • L 5 /L 6 may be any one of 0.85, 0.88, 0.9, 0.93, 0.95, 0.97, 0.99, etc., or a range of values between any two of them.
  • L 5 /L 6 ⁇ 0.85, so that the size of the battery 2 in the sub-compartment 111 along the length direction X of the box body accounts for a large proportion, and the space of the sub-compartment 111 is fully utilized in the length direction X of the box body, which is conducive to increasing the volume proportion of all batteries 2 in the sub-compartment 111 and improving the volume energy density of the energy storage device 10.
  • L 5 /L 6 ⁇ 0.99, so that the sub-compartment 111 has sufficient installation margin for installing the battery 2 in the length direction X of the box body, reducing the difficulty of installing the battery 2.
  • L 5 /L 6 may be any point value of 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, etc., or a range value between any two of them.
  • 0.88 ⁇ L 5 /L 6 ⁇ 0.95 which takes into account both the volume energy density of the energy storage device 10 and the convenience of installing the battery 2 in the length direction X of the box, which is beneficial to improving the volume energy density of the energy storage device 10 and further reducing the difficulty of installing the battery 2 in the length direction X of the box.
  • Fig. 15 is a D-D cross-sectional view of the energy storage device 10 shown in Fig. 13.
  • the sub-compartment 111 only accommodates one battery 2.
  • the sub-compartment 111 can accommodate one battery 2 or multiple batteries 2.
  • the sub-compartment 111 only accommodates one battery 2 along the width direction Y of the box body, which can reduce the space occupied by other components of the battery 2 except the battery cell 21 (for example, the box wall of the battery box 22), which is beneficial to increase the proportion of the battery 2 in the sub-compartment 111 along the width direction Y of the box body, and is beneficial to improve the utilization rate of the space of the sub-compartment 111 along the width direction Y of the box body.
  • the sub-compartment 111 accommodates a plurality of batteries 2 .
  • the sub-compartment 111 can accommodate one battery 2 or multiple batteries 2.
  • the sub-compartment 111 can accommodate one battery 2 or multiple batteries 2.
  • the sub-compartment 111 may accommodate two, three, four, five, six, seven, eight, nine, ten or more batteries 2 .
  • the sub-compartment 111 only accommodates one battery 2; along the width direction Y of the box, the sub-compartment 111 only accommodates one battery 2; along the height direction Z of the box, the sub-compartment 111 accommodates multiple batteries 2. All batteries 2 in each sub-compartment 111 are connected in series. In two adjacent sub-compartments 111, all batteries 2 in one sub-compartment 111 are connected in series to form a first battery group (battery cluster), and all batteries 2 in the other sub-compartment 111 are connected in series to form a second battery group (battery cluster), and the first battery group is connected in parallel with the second battery group.
  • the main control unit in the main control compartment 15 can realize high-voltage control and communication of the battery cluster, and the confluence unit in the electrical compartment can realize parallel confluence of multiple battery clusters, and realize safe connection of multiple battery clusters with the DC side of the energy storage converter (PCS, Power Conversion System).
  • PCS Power Conversion System
  • support members 113 are provided on both sides of each sub-compartment 111.
  • the support members 113 are located at the bottom of the battery 2, and the support members 113 are used to support the battery 2.
  • the support members 113 can be installed on the compartment wall and the partition 112 of the battery compartment 11. The provision of the support members 113, on the one hand, can improve the stability of each battery 2 in the sub-compartment 111; on the other hand, it allows a certain distance to be maintained between two adjacent batteries 2 in the height direction Z of the box body in the sub-compartment 111, so that it is not easy to affect the adjacent battery 2 when disassembling and installing one battery 2.
  • the sub-compartment 111 accommodates multiple batteries 2 along the height direction Z of the box body, which can reduce the size of a single battery 2 in the height direction Z of the box body and reduce the manufacturing difficulty and manufacturing cost of the battery 2.
  • the number of sub-bins 111 is less than or equal to 4.
  • the number of sub-compartments 111 is less than or equal to 4, and there are fewer partition components separating two adjacent sub-compartments 111 in the battery compartment 11, which reduces the space occupied by the partition components in the battery compartment 11, provides more space for the battery 2, and improves the space utilization of the battery compartment 11.
  • the volume of the battery 2 is V 6
  • the sum of the volumes of the housings 211 of the plurality of battery cells 21 of the battery 2 is V 7 , satisfying: 0.5 ⁇ V 7 /V 6 ⁇ 0.8.
  • FIG. 16 is a schematic diagram of the structure of a battery 2 provided in some embodiments of the present application
  • FIG. 17 is an EE cross-sectional view of the battery 2 shown in FIG. 16
  • the battery 2 includes a battery box 22 and a plurality of battery cells 21, and the plurality of battery cells 21 are accommodated in the battery box 22.
  • the battery box 22 may include a first portion 221 and a second portion 222, and the first portion 221 and the second portion 222 cover each other to define an accommodation space for accommodating the battery cells 21.
  • the volume of the battery box 22 is the volume V 6 of the battery 2.
  • the length, width and height of the battery box 22 can be measured by a measuring tool, and the volume of the battery box 22 can be calculated by the measured length, width and height of the battery box 22, thereby obtaining the volume V 6 of the battery 2. It can be understood that the product of the length, width and height of the battery box 22 is the volume of the battery box 22, wherein the measuring tool can be a ruler.
  • the multiple battery cells 21 of the battery 2 can be connected in series, in parallel or in a mixed connection.
  • the multiple battery cells 21 can be connected in series, in parallel or in a mixed connection through a busbar 23, and the busbar 23 can be a metal conductor, such as copper, iron, aluminum, steel, aluminum alloy, etc.
  • the battery 2 can also include a thermal management component, which can be arranged in the battery box 22 or integrated in the box wall of the battery box 22, and the thermal management component is used to manage the temperature of the battery cells 21.
  • the thermal management component can be a water-cooled plate containing a fluid medium.
  • V 7 is the sum of the volumes of the outer shells 211 of all the battery cells 21 of the battery 2.
  • the volumes of the outer shells 211 of all the battery cells 21 of the battery 2 may be equal, or the volumes of the outer shells 211 of at least two battery cells 21 may be different. If the volumes of the outer shells 211 of all the battery cells 21 of the battery 2 are equal, the volume of the outer shell 211 of one battery cell 21 may be measured, and then V 7 may be obtained by multiplying the volume of the outer shell 211 of the battery cell 21 by the number of battery cells 21 of the battery 2.
  • the volumes of the outer shells 211 of at least two battery cells 21 in the battery 2 are not equal, for example, the outer shells 211 of all the battery cells 21 of the battery 2 are composed of two outer shells 211 of different volumes
  • the volume of the outer shell 211 of the first type of battery cell 21 can be measured first, and the volume of the outer shell 211 of the first type of battery cell 21 can be multiplied by the number of the first type of battery cells 21 of the battery 2 to obtain the fifth total volume, and then the volume of the outer shell 211 of the second type of battery cell 21 can be measured, and the volume of the outer shell 211 of the second type of battery cell 21 can be multiplied by the number of the second type of battery cells 21 of the battery 2 to obtain the sixth total volume, and the sum of the fifth total volume and the sixth total volume is V 7 .
  • V 7 /V 6 may be any point value of 0.5, 0.53, 0.55, 0.58, 0.6, 0.63, 0.65, 0.68, 0.7, 0.73, 0.75, 0.78, 0.8, etc., or a range value between any two of them.
  • V 7 /V 6 ⁇ 0.5, so that the volume proportion of all battery cells 21 of the battery 2 in the battery 2 is relatively large, which improves the utilization rate of the internal space of the battery 2, which is beneficial to improve the volume energy density of the battery 2, so as to improve the volume energy density of the energy storage device 10;
  • V 7 /V 6 ⁇ 0.8 so that the volume proportion of all battery cells 21 of the battery 2 in the battery 2 is not too large, which provides more space for other components of the battery 2 (for example, the confluence component 23, the thermal management component, etc.), and reduces the assembly difficulty and manufacturing cost of the battery 2.
  • V 7 /V 6 may be any point value of 0.58, 0.59, 0.6, 0.61, 0.62, 0.63, 0.64, 0.65, 0.66, 0.67, 0.68, 0.69, 0.7, etc., or a range value between any two of them.
  • the number of battery cells 21 of the battery 2 is N 8
  • N 8 is a positive integer greater than or equal to 2.
  • V 7 V 3 *N 8 , so that the volumes of the housings 211 of all battery cells 21 of the battery 2 are equal, and battery cells 21 of the same specification can be selected.
  • the battery 2 includes p*q battery cells 21, and the p*q battery cells 21 are arranged in p rows and q columns. Each row of battery cells 21 is arranged along the length direction X of the box, and each column of battery cells 21 is arranged along the width direction Y of the box. Both p and q are positive integers.
  • all battery cells 21 are arranged in a rectangular array of p rows and q columns. There are q battery cells 21 in each row of battery cells 21, and p battery cells 21 in each column of battery cells 21.
  • the battery 2 has multiple battery cells 21, and at least one of p and q is greater than or equal to 2.
  • each column of battery cells 21 includes a plurality of battery cell groups connected in series, each battery cell group includes a plurality of battery cells 21 connected in parallel, and two adjacent columns of battery cells 21 are connected in parallel.
  • any one of the length direction, width direction, and height direction of the outer shell 211 is parallel to the length direction X of the box, another is parallel to the width direction Y of the box, and another is parallel to the height direction Z of the box.
  • the length direction of the outer shell 211 is parallel to the length direction X of the box
  • the width direction of the outer shell 211 is parallel to the width direction Y of the box
  • the height direction of the outer shell 211 is parallel to the height direction Z of the box.
  • the thermal management component may be disposed between two adjacent battery cells 21 in each column of battery cells 21 , or between two adjacent battery cells 21 in each row of battery cells 21 .
  • all the battery cells 21 of the battery 2 are distributed in a rectangular array, so that the battery cells 21 of the battery 2 are arranged more regularly, which is beneficial to improving the space utilization of the battery 2 .
  • the sum of the dimensions of the housings 211 of q battery cells 21 along the length direction X of the box is L 7
  • the dimension of the battery 2 along the length direction X of the box is L 5 , satisfying: 0.8 ⁇ L 7 /L 5 ⁇ 0.95.
  • the sizes of the outer shells 211 of q battery cells 21 along the length direction X of the box body may be equal, or the sizes of the outer shells 211 of at least two battery cells 21 along the length direction X of the box body may be unequal.
  • the length direction of the outer shell 211 of the battery cell 21 and the width direction of the battery 2 are parallel to the length direction X of the box body, the sum of the dimensions of the outer shells 211 of q battery cells 21 along the length direction X of the box body is the sum of the lengths of the outer shells 211 of q battery cells 21, and the dimension of the battery 2 along the length direction X of the box body is the width of the battery 2.
  • L 7 /L 5 may be any one of 0.8, 0.83, 0.85, 0.87, 0.9, 0.92, 0.95, etc., or a range of values between any two of them.
  • L 7 /L 5 ⁇ 0.8 so that the size of the outer shell 211 of each row of battery cells 21 in the length direction X of the box body in the battery 2 accounts for a large proportion, and the space of the battery 2 in the length direction X of the box body is fully utilized, and the gap between the outer shells 211 of two adjacent battery cells 21 in the length direction X of the box body is reduced, which is conducive to increasing the volume proportion of the outer shells 211 of all battery cells 21 in the battery 2, and is conducive to improving the volume energy density of the battery 2.
  • L 7 /L 5 ⁇ 0.95 the size of the outer shell 211 of each row of battery cells 21 in the length direction X of the box body in the battery 2 does not account for too large, reducing the manufacturing difficulty and manufacturing cost of the battery 2.
  • L 7 /L 5 may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • L3 can be any point value of 0.17m, 0.2m, 0.25m, 0.3m, 0.35m, 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, etc., or a range of values between any two of them.
  • q can be 1, 2, 3, 4, or 5.
  • L 3 L 7 /q, so that the outer shell 211 of the battery cells 21 in each row of the battery 2 has the same size along the length direction X of the box, and the battery cells 21 in each row can be selected from the battery cells 21 of the same specification.
  • q 4, 0.2m ⁇ L 3 ⁇ 0.3m.
  • L3 can be any point value of 0.2m, 0.21m, 0.22m, 0.23m, 0.24m, 0.25m, 0.26m, 0.27m, 0.28m, 0.29m, 0.3m, etc., or a range value between any two of them.
  • the size of the housing 211 of the battery cell 21 is controlled within a range of 0.2 m to 0.3 m, so that the battery 2 has a higher volume energy density.
  • q 2, 0.4m ⁇ L 3 ⁇ 0.6m.
  • L3 can be any point value of 0.4m, 0.43m, 0.45m, 0.48m, 0.5m, 0.53m, 0.55m, 0.58m, 0.6m, etc., or a range value between any two of them.
  • the size of the housing 211 of the battery cell 21 is controlled within the range of 0.4 m ⁇ L 3 ⁇ 0.6 m, so that the battery 2 has a higher volume energy density.
  • the sum of the dimensions of the housings 211 of p battery cells 21 along the width direction Y of the box is D 7
  • the dimension of the battery 2 along the width direction Y of the box is D 5 , satisfying: 0.75 ⁇ D 7 /D 5 ⁇ 0.95.
  • the sizes of the shells 211 of p battery cells 21 along the width direction Y of the box body may be equal, or the sizes of the shells 211 of at least two battery cells 21 along the width direction Y of the box body may be unequal.
  • the width direction of the outer shell 211 of the battery cell 21 and the length direction of the battery 2 are parallel to the width direction Y of the box body
  • the sum of the dimensions of the outer shells 211 of p battery cells 21 along the width direction Y of the box body is the sum of the widths of the outer shells 211 of the p battery cells 21
  • the dimension of the battery 2 along the width direction Y of the box body is the length of the battery 2.
  • D 7 /D 5 may be any point value of 0.75, 0.78, 0.8, 0.83, 0.85, 0.87, 0.9, 0.92, 0.95, etc., or a range value between any two of them.
  • D 7 /D 5 ⁇ 0.75, so that the size of the outer shell 211 of each column of battery cells 21 in the width direction Y of the box body in the battery 2 accounts for a large proportion, and the space of the battery 2 in the width direction Y of the box body is fully utilized, and the gap between the outer shells 211 of two adjacent battery cells 21 in the width direction Y of the box body is reduced, which is conducive to increasing the volume proportion of the outer shells 211 of all battery cells 21 in the battery 2, and is conducive to improving the volume energy density of the battery 2.
  • D 7 /D 5 ⁇ 0.95, the size of the outer shell 211 of each column of battery cells 21 in the width direction Y of the box body in the battery 2 does not account for too large, reducing the manufacturing difficulty and manufacturing cost of the battery 2.
  • D 7 /D 5 may be any point value of 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • D 7 /D 5 takes into account the volume energy density of the battery 2 , the manufacturing difficulty of the battery 2 , and the economic requirements of the battery 2 , which is conducive to further improving the volume energy density of the battery 2 and reducing the manufacturing difficulty and manufacturing cost of the battery 2 .
  • D3 can be any point value of 0.04m, 0.05m, 0.06m, 0.07m, 0.08m, 0.09m, 0.1m, 0.11m, 0.12m, etc., or a range of values between any two of them.
  • p can be 20, 21, 22, 23, 24, 25, 26, 28, 29, or 30.
  • D 3 D 7 /p, so that the outer shell 211 of the battery cells 21 in each column of the battery 2 has the same size along the width direction Y of the box body, and the battery cells 21 in each column can be selected from the battery cells 21 of the same specification.
  • each battery cell 21 is relatively large, and the number of batteries 2 is not too large, which can reduce the space occupied by the wall of the outer shell 211 in the width direction Y of the box body, which is conducive to increasing the size proportion of the outer shell 211 of each column of battery cells 21 in the width direction Y of the box body in the battery 2, and is conducive to improving the space utilization rate of the battery 2, so as to improve the volume energy density of the battery 2.
  • D3 may be any point value of 0.06m, 0.063m, 0.065m, 0.068m, 0.07m, 0.073m, 0.075m, 0.078m, 0.08m, etc., or a range value between any two of them.
  • p may be 24, 25, 26 or 28.
  • 0.06m ⁇ D 3 ⁇ 0.08m, 24 ⁇ p ⁇ 28, and such a battery 2 has a relatively high volume energy density.
  • the size of the housing 211 of the battery cell 21 along the height direction Z of the box is H 3
  • the size of the battery 2 along the height direction Z of the box is H 5 , satisfying: 0.75 ⁇ H 3 /H 5 ⁇ 0.95.
  • the height direction of the outer shell 211 of the battery cell 21 and the height direction of the battery 2 are parallel to the height direction Z of the box body
  • the size of the outer shell 211 of the battery cell 21 along the height direction Z of the box body is the height of the outer shell 211 of the battery cell 21
  • the size of the battery 2 along the height direction Z of the box body is the height of the battery 2.
  • H 3 /H 5 may be any one of 0.75, 0.78, 0.8, 0.83, 0.85, 0.87, 0.9, 0.92, 0.95, etc., or a range of values between any two of them.
  • H 3 /H 5 ⁇ 0.75, so that the size of the outer shell 211 of the battery cell 21 in the height direction Z of the box body in the battery 2 accounts for a large proportion, and the space of the battery 2 in the height direction Z of the box body is fully utilized, which is conducive to increasing the volume proportion of the outer shell 211 of all battery cells 21 in the battery 2, and is conducive to improving the volume energy density of the battery 2.
  • H 3 /H 5 ⁇ 0.95, so that the size of the outer shell 211 of the battery cell 21 in the height direction Z of the box body in the battery 2 does not account for too large, reducing the manufacturing difficulty and manufacturing cost of the battery 2.
  • H 3 /H 5 may be any point value of 0.82, 0.83, 0.84, 0.85, 0.86, 0.87, 0.88, 0.89, 0.9, etc., or a range value between any two of them.
  • 0.82 ⁇ H 3 /H 5 ⁇ 0.9 which takes into account the volume energy density of the battery 2, the manufacturing difficulty of the battery 2 and the economic requirements of the battery 2. This is conducive to further improving the volume energy density of the battery 2 and reducing the manufacturing difficulty and manufacturing cost of the battery 2.
  • H3 can be any point value of 0.17m, 0.2m, 0.25m, 0.3m, 0.35m, 0.4m, 0.45m, 0.5m, 0.55m, 0.6m, etc., or a range value between any two of them.
  • H 3 ⁇ 0.17 m, so that the size of the outer shell 211 of the battery cell 21 along the height direction Z of the box body is larger, which is beneficial to increase the proportion of the size of the outer shell 211 of the battery cell 21 in the battery 2 along the height direction Z of the box body, and is beneficial to improve the volume energy density of the battery cell 21.
  • H 3 ⁇ 0.6 m so that the size of the outer shell 211 of the battery cell 21 along the height direction Z of the box body is not too large, which can effectively reduce the manufacturing difficulty and manufacturing cost of the battery cell 21.
  • H3 can be any point value of 0.2m, 0.23m, 0.25m, 0.28m, 0.3m, 0.33m, 0.35m, 0.38m, 0.4m, 0.43m, 0.45m, etc., or a range value between any two of them.
  • 0.2m ⁇ H 3 ⁇ 0.45m which takes into account the volume energy density of the battery 2, the manufacturing difficulty of the battery 2 and the economic requirements of the battery 2. This is conducive to further improving the volume energy density of the battery 2 and reducing the manufacturing difficulty and manufacturing cost of the battery 2.
  • FIG. 18 is an isometric view of a battery cell 21 provided in some embodiments of the present application
  • FIG. 19 is an exploded view of the battery cell 21 shown in FIG. 18
  • FIG. 20 is a cross-sectional exploded view of the battery cell 21 shown in FIG. 18 cut along the UW plane
  • FIG. 21 is a cross-sectional exploded view of the battery cell 21 shown in FIG. 18 cut along the VW plane.
  • the battery cell 21 further includes at least one electrode assembly 213, and the electrode assembly 213 is accommodated in the housing 211.
  • the housing 211 is in the shape of a right parallelepiped, and the size of the housing 211 in the first direction U is W 1 , the size of the housing 211 in the second direction V is T 1 , and the size of the housing 211 in the third direction W is K 1 .
  • One of the first direction U, the second direction V and the third direction W is parallel to the length direction X of the box, another is parallel to the width direction Y of the box, and the other is parallel to the height direction Z of the box.
  • the housing 211 includes a first wall 2113 and a second wall 2114 disposed opposite to each other along a first direction U, a third wall 2115 and a fourth wall 2116 disposed opposite to each other along a second direction V, and a fifth wall 2117 and a sixth wall 2118 disposed opposite to each other along a third direction W.
  • the sum of the thicknesses of the first wall 2113 and the second wall 2114 is a
  • the sum of the thicknesses of the third wall 2115 and the fourth wall 2116 is b.
  • the sum of the thicknesses of the fifth wall 2117 and the sixth wall 2118 is c, satisfying: (W 1 -a)*(T 1 -b)*(K 1 -c)/(W 1 *T 1 *K 1 ) ⁇ 0.9.
  • Electrodes assemblies 213 there may be one or more electrode assemblies 213 in the housing 211. If there are more than one electrode assemblies 213 in the housing 211, the multiple electrode assemblies 213 may be connected in parallel.
  • the housing 211 is in the shape of a right parallelepiped, which may be a cuboid, a cube, etc.
  • a right parallelepiped which may be a cuboid, a cube, etc.
  • four walls may form the housing 211, and the other two walls may be end caps 2112, or five walls may form the housing 211, and the other wall may be end caps 2112.
  • the size of the housing 211 in the first direction U, the size of the housing 211 in the second direction V, the size of the housing 211 in the third direction W, the thickness of the first wall 2113, the thickness of the second wall 2114, the thickness of the third wall 2115, the thickness of the fourth wall 2116, the thickness of the fifth wall 2117, and the thickness of the sixth wall 2118 may all be measured by a vernier caliper.
  • the first wall 2113, the second wall 2114, the third wall 2115, the fourth wall 2116, the fifth wall 2117 and the sixth wall 2118 are all aluminum alloys.
  • the aluminum alloy includes the following components in mass percentage: aluminum ⁇ 96.7%, 0.05% ⁇ copper ⁇ 0.2%, iron ⁇ 0.7%, manganese ⁇ 1.5%, silicon ⁇ 0.6%, zinc ⁇ 0.1%, other single element components ⁇ 0.05%, and other elements in total ⁇ 0.15%.
  • the first direction U is the length direction of the outer shell 211 of the battery cell 21
  • the second direction V is the width direction of the outer shell 211 of the battery cell 21
  • the third direction W is the height direction of the outer shell 211 of the battery cell 21. It can be understood that W1 is the length of the outer shell 211 of the battery cell 21
  • T1 is the width of the outer shell 211 of the battery cell 21
  • K1 is the height of the outer shell 211 of the battery cell 21.
  • ( W1 -a)*( T1 -b)*( K1 -c)/( W1 * T1 * K1 ) may be any point value of 0.9, 0.905, 0.91, 0.915, 0.92, 0.925, 0.93, 0.935, 0.94, 0.945, 0.95, 0.955, 0.96, 0.965, 0.97, 0.975, 0.98, 0.985, 0.99, 0.995, etc., or a range value between any two of them.
  • (W 1 -a)*(T 1 -b)*(K 1 -c) can be understood as the volume of the internal space of the housing 211, that is, the volume of the space enclosed by the inner surface of the housing 211.
  • W 1 *T 1 *K 1 is the volume of the housing 211. It should be noted that in the embodiment in which a convex hull 2112b protruding from the outer surface 2112a of the end cover 2112 of the housing 211 is formed, the volume of the housing 211 does not include the volume of the convex hull 2112b.
  • W 1 , T 1 and K 1 are measured based on the outer surfaces of the walls.
  • K 1 is the distance between the outer surfaces of the fifth wall 2117 and the sixth wall 2118 along the third direction W.
  • W 1 , T 1 and K 1 are measured based on the plane area of the outer surface (i.e., the area other than the convex portion or the concave portion).
  • K 1 is the distance between the plane area of the outer surface of the sixth wall 2118 excluding the first convex portion and the outer surface of the fifth wall 2117 along the third direction W.
  • K 1 is the distance between the plane area of the outer surface of the fifth wall 2117 excluding the second convex portion and the plane area of the outer surface of the sixth wall 2118 excluding the first convex portion.
  • the distance between the outer surface and the inner surface of each wall can be measured from any position of each wall to obtain the thickness of the wall. If one of the walls of the housing 211 is of uneven thickness, the distance between the outer surface and the inner surface of the wall is measured from the point where the thickness of the wall is the largest to obtain the thickness of the wall. In other words, if the thickness of a wall is uneven, the maximum thickness of the wall is taken to calculate a, b, or c.
  • the ratio of the volume of the internal space of the outer shell 211 of the battery cell 21 to the volume of the outer shell 211 is above 0.9, so that the internal space of the outer shell 211 accounts for a relatively large proportion, and the space of the outer shell 211 that can be used to accommodate the electrode assembly 213 is increased. Under the same chemical system, the volume energy density of the battery cell 21 can be improved.
  • the battery cell 21 is a square shell battery cell
  • the shell 2111 of the outer shell 211 is a hollow structure with one end open, and there is only one end cover 2112 in the battery cell 21.
  • the ratio of W1 -a to W1 By setting the ratio of W1 -a to W1 to be greater than 0.97, the length of the internal space of the housing 211 becomes larger while the length of the battery cell 21 remains unchanged, thereby accommodating a longer electrode assembly 213; under the same chemical material system, the volume energy density of the battery cell 21 can be improved.
  • ( W1 -a)/ W1 can be any point value of 0.97, 0.975, 0.98, 0.985, 0.99, 0.995, etc., or a range value between any two of them.
  • T 1 -b By setting the ratio of T 1 -b to T 1 to be greater than 0.965, the width of the internal space of the housing 211 becomes larger while the width of the battery cell 21 remains unchanged, thereby accommodating a wider electrode assembly 213; under the same chemical material system, the volume energy density of the battery cell 21 can be improved.
  • (T 1 -b)/T 1 can be any point value of 0.965, 0.97, 0.975, 0.98, 0.985, 0.99, 0.995, etc., or a range value between any two of them.
  • K 1 -c By setting the ratio of K 1 -c to K 1 to be greater than 0.965, the height of the internal space of the housing 211 becomes larger while the height of the battery cell 21 remains unchanged, so that a higher electrode assembly 213 can be accommodated; under the same chemical material system, the volume energy density of the battery cell 21 can be improved.
  • (K 1 -c)/K 1 can be any point value of 0.965, 0.97, 0.975, 0.98, 0.98.5, 0.99, 0.995, etc., or a range value between any two of them.
  • the housing 211 includes a shell 2111 and an end cap 2112, the shell 2111 has an opening, the end cap 2112 covers the opening, and the end cap 2112 is provided with an electrode terminal 212.
  • the shell 2111 includes an integrally formed first wall 2113, a second wall 2114, a third wall 2115, a fourth wall 2116, and a fifth wall 2117, and the end cap 2112 is a sixth wall 2118.
  • the shell 2111 is a hollow structure with an opening at one end, and the shell 211 has one end cap 2112.
  • the end cap 2112 is separately provided and connected to the shell 2111, and the end cap 2112 and the shell 2111 can be welded or crimped.
  • the electrode terminal 212 When assembling the battery 2, the electrode terminal 212 can be first installed on the end cover 2112, and then the electrode assembly 213 can be accommodated in the shell 2111, and then the end cover 2112 can be covered on the opening of the shell 2111, which can reduce the difficulty of installing the electrode assembly 213 in the shell 211 and reduce the difficulty of installing the electrode terminal 212 in the shell 211.
  • a certain assembly gap i.e., shell entry gap
  • the assembly gap can be 0.8-2mm.
  • an insulating member may be provided inside the housing 211, but the insulating member will inevitably occupy a portion of the internal space of the housing 211, thereby reducing the space left for the electrode assembly 213 and the electrolyte.
  • the battery cell 21 further includes a first insulating member 214 and a second insulating member 215, wherein the first insulating member 214 is disposed between the fifth wall 2117 and the electrode assembly 213, and abuts against the fifth wall 2117.
  • the second insulating member 215 is disposed between the sixth wall 2118 and the electrode assembly 213, and abuts against the sixth wall 2118.
  • the maximum dimension of the first insulating member 214 in the third direction W is e 1
  • the maximum dimension of the second insulating member 215 in the third direction W is e 2 , satisfying: (W 1 -a-1.6 mm)*(T 1 -b-1.6 mm)*(K 1 -ce 1 -e 2 )/(W 1 *T 1 *K 1 ) ⁇ 0.88, 0.3 mm ⁇ e 1 ⁇ 1.2 mm, and 2 mm ⁇ e 2 ⁇ 10 mm.
  • ( W1 -a-1.6mm)*( T1 -b-1.6mm)*( K1 - ce1 - e2 )/( W1 * T1 * K1 ) may be any point value of 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, etc., or a range value between any two of them.
  • e1 can be any point value of 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, etc., or a range value between any two of them.
  • e2 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • W 1 -a-1.6mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 0.8mm, along the first direction U, the internal space of the shell 211 is the maximum size of the electrode assembly 213.
  • T 1 -b-1.6mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 0.8mm, along the second direction V, the internal space of the shell 211 is the maximum size of the electrode assembly 213.
  • K 1 -ce 1 -e 2 means: when a first insulating member 214 abutting against the fifth wall 2117 is provided between the fifth wall 2117 and the electrode assembly 213, and a second insulating member 215 abutting against the sixth wall 2118 is provided between the sixth wall 2118 and the electrode assembly 213, along the third direction W, the internal space of the shell 211 is the maximum size of the electrode assembly 213.
  • the first insulating member 214 may be a bottom support plate, and the second insulating member 215 may be a lower plastic.
  • the battery cell 21 further includes a first insulating member 214 and a second insulating member 215, wherein the first insulating member 214 is disposed between the fifth wall 2117 and the electrode assembly 213, and abuts against the fifth wall 2117.
  • the second insulating member 215 is disposed between the sixth wall 2118 and the electrode assembly 213, and abuts against the sixth wall 2118.
  • the maximum dimension of the first insulating member 214 in the third direction W is e 1
  • the maximum dimension of the second insulating member 215 in the third direction W is e 2 , satisfying: (W 1 -a-4mm)*(T 1 -b-4mm)*(K 1 -ce 1 -e 2 )/(W 1 *T 1 *K 1 ) ⁇ 0.85, 0.3mm ⁇ e 1 ⁇ 1.2mm, and 2mm ⁇ e 2 ⁇ 10mm.
  • ( W1 -a-4mm)*( T1 -b-4mm)*( K1 - ce1 - e2 )/( W1 * T1 * K1 ) may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, etc., or a range value between any two of them.
  • e1 can be any point value of 0.3mm, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1mm, 1.1mm, 1.2mm, etc., or a range value between any two of them.
  • e2 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • W 1 -a-4mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 2mm, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the first direction U.
  • T 1 -b-4mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 2mm, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the second direction V.
  • K 1 -ce 1 -e 2 means: when a first insulating member 214 abutting against the fifth wall 2117 is provided between the fifth wall 2117 and the electrode assembly 213, and a second insulating member 215 abutting against the sixth wall 2118 is provided between the sixth wall 2118 and the electrode assembly 213, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the third direction W.
  • W 1 ⁇ T 1 the first direction U is parallel to the length direction X of the box, the second direction V is parallel to the width direction Y of the box, and the third direction W is parallel to the height direction Z of the box.
  • the first direction U is the length direction of the shell 211 of the battery cell 21
  • the second direction V is the width direction of the shell 211 of the battery cell 21
  • the third direction W is the height direction of the shell 211 of the battery cell 21, so that the length direction of the shell 211 is parallel to the length direction X of the box body, the width direction of the shell 211 is parallel to the width direction Y of the box body, and the height direction of the shell 211 is parallel to the height direction Z of the box body.
  • the end cover 2112 and the fifth wall 2117 of the shell 211 are relatively arranged along the height direction Z of the box body, the first wall 2113 and the second wall 2114 of the shell 211 are relatively arranged along the length direction X of the box body, and the third wall 2115 and the fourth wall 2116 of the shell 211 are relatively arranged along the width direction Y of the box body, which is beneficial to increase the volume proportion of all battery cells 21 in the battery compartment 11.
  • FIG. 22 is an isometric view of a battery cell 21 provided in some other embodiments of the present application
  • FIG. 23 is an exploded view of the battery cell 21 shown in FIG. 22
  • FIG. 24 is a cross-sectional exploded view of the battery cell 21 shown in FIG. 22 cut along the UW plane
  • FIG. 25 is a cross-sectional exploded view of the battery cell 21 shown in FIG. 22 cut along the VW plane.
  • the housing 211 includes a shell 2111 and two end covers 2112.
  • the shell 2111 has two openings arranged opposite to each other along a third direction W.
  • the two end covers 2112 cover the two openings respectively, and at least one end cover 2112 is provided with an electrode terminal 212.
  • the shell 2111 includes a first wall 2113, a second wall 2114, a third wall 2115, and a fourth wall 2116 formed in one piece.
  • the two end covers 2112 are respectively a fifth wall 2117 and a sixth wall 2118.
  • the shell 2111 is a hollow structure with openings formed at both ends.
  • a certain assembly gap i.e., shell entry gap
  • the assembly gap can be 0.8-2mm.
  • an insulating member may be provided inside the housing 211, but the insulating member will inevitably occupy a portion of the internal space of the housing 211, thereby reducing the space left for the electrode assembly 213 and the electrolyte.
  • the battery cell 21 further includes a third insulating member 216 and a fourth insulating member 217.
  • the third insulating member 216 is disposed between the fifth wall 2117 and the electrode assembly 213, and abuts against the fifth wall 2117.
  • the fourth insulating member 217 is disposed between the sixth wall 2118 and the electrode assembly 213, and abuts against the sixth wall 2118.
  • the maximum dimension of the third insulating member 216 in the third direction W is e 3
  • the maximum dimension of the fourth insulating member 217 in the third direction W is e 4 , satisfying: (W 1 -a-1.6mm)*(T 1 -b-1.6mm)*(K 1 -ce 3 -e 4 )/(W 1 *T 1 *K 1 ) ⁇ 0.88, 2mm ⁇ e 3 ⁇ 10mm, and 2mm ⁇ e 4 ⁇ 10mm.
  • ( W1 -a-1.6mm)*( T1 -b-1.6mm)*( K1 - ce3 - e4 )/( W1 * T1 * K1 ) may be any point value of 0.88, 0.89, 0.9, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, etc., or a range value between any two of them.
  • e3 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • e 4 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • W 1 -a-1.6mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 0.8mm, along the first direction U, the maximum size of the internal space of the shell 211 left for the electrode assembly 213.
  • T 1 -b-1.6mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 0.8mm, along the second direction V, the maximum size of the internal space of the shell 211 left for the electrode assembly 213.
  • K 1 -ce 3 -e 4 means: when a third insulating member 216 abutting against the fifth wall 2117 is provided between the fifth wall 2117 and the electrode assembly 213, and a fourth insulating member 217 abutting against the sixth wall 2118 is provided between the sixth wall 2118 and the electrode assembly 213, along the third direction W, the maximum size of the internal space of the shell 211 left for the electrode assembly 213.
  • Both the third insulating member 216 and the fourth insulating member 217 can be lower plastic.
  • the battery cell 21 further includes a third insulating member 216 and a fourth insulating member 217.
  • the third insulating member 216 is disposed between the fifth wall 2117 and the electrode assembly 213, and abuts against the fifth wall 2117.
  • the fourth insulating member 217 is disposed between the sixth wall 2118 and the electrode assembly 213, and abuts against the sixth wall 2118.
  • the maximum dimension of the third insulating member 216 in the third direction W is e 3
  • the maximum dimension of the fourth insulating member 217 in the third direction W is e 4 , satisfying: (W 1 -a-4mm)*(T 1 -b-4mm)*(K 1 -ce 3 -e 4 )/(W 1 *T 1 *K 1 ) ⁇ 0.85, 2mm ⁇ e 3 ⁇ 10mm, and 2mm ⁇ e 4 ⁇ 10mm.
  • W1 -a-4mm*( T1 -b-4mm)*( K1 - ce3 - e4 )/( W1 * T1 * K1 ) may be any point value of 0.85, 0.86, 0.87, 0.88, 0.89, 0.90, 0.91, 0.92, 0.93, 0.94, 0.95, 0.96, 0.97, 0.98, 0.99, etc., or a range value between any two of them.
  • e3 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • e 4 can be any point value of 2mm, 3mm, 4mm, 5mm, 6mm, 7mm, 8mm, 9mm, 10mm, etc., or a range value between any two of them.
  • W 1 -a-4mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 2mm, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the first direction U.
  • T 1 -b-4mm means: when the assembly gap between the electrode assembly 213 and the shell 2111 is 2mm, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the second direction V.
  • K 1 -ce 3 -e 4 means: when a third insulating member 216 abutting against the fifth wall 2117 is provided between the fifth wall 2117 and the electrode assembly 213, and a fourth insulating member 217 abutting against the sixth wall 2118 is provided between the sixth wall 2118 and the electrode assembly 213, the maximum size of the internal space of the shell 211 left for the electrode assembly 213 along the third direction W.
  • W 1 ⁇ T 1 the first direction U is parallel to the height direction Z of the box, the second direction V is parallel to the width direction Y of the box, and the third direction W is parallel to the length direction X of the box.
  • the first direction U is the length direction of the shell 211 of the battery cell 21
  • the second direction V is the width direction of the shell 211 of the battery cell 21
  • the third direction W is the height direction of the shell 211 of the battery cell 21, so that the length direction of the shell 211 is parallel to the height direction Z of the box body, the width direction of the shell 211 is parallel to the width direction Y of the box body, and the height direction of the shell 211 is parallel to the length direction X of the box body.
  • end covers 2112 are provided at both ends of the shell 2111 and W 1 ⁇ T 1 , the two end covers 2112 of the shell 211 are arranged along the length direction X of the box body, the first wall 2113 and the second wall 2114 of the shell 211 are arranged along the height direction Z of the box body, and the third wall 2115 and the fourth wall 2116 of the shell 211 are relatively arranged along the width direction Y of the box body, which is beneficial to increase the volume proportion of all battery cells 21 in the battery compartment 11.
  • W 1 *T 1 *K 1 may be any point value of 0.003 m 3 , 0.005 m 3 , 0.008 m 3 , 0.01 m 3 , 0.013 m 3 , 0.015 m 3 , 0.018 m 3 , 0.02 m 3 , 0.023 m 3 , 0.025 m 3 , 0.028 m 3 , 0.03 m 3 , 0.033 m 3 , 0.035 m 3 , 0.038 m 3 , 0.04 m 3 , etc., or a range value between any two of them.
  • W 1 *T 1 *K 1 ⁇ 0.003 m 3 so that when the ratio of the volume of the internal space of the shell 211 to the volume of the shell 211 is greater than 0.9, the wall thickness of the shell 211 is not too small, thereby meeting the structural strength requirement of the shell 211 ; W 1 *T 1 *K 1 ⁇ 0.04 m 3 , the capacity and current of the battery cell 21 can be controlled within a suitable range, reducing the risk of damage to overcurrent components in the circuit.
  • W 1 *T 1 *K 1 may be 0.0032 m 3 , 0.0035 m 3 , 0.0042 m 3 , 0.005 m 3 , 0.006 m 3 , 0.007 m 3 , 0.008 m 3 , 0.009 m 3 , 0.01 m 3 , 0.011 m 3 , 0.012 m 3 , 0.013 m 3 , 0.014 m 3 , 0.015 m 3 , 0.016 m 3 , 0.017 m 3 , 0.018 m 3 , 0.019 m 3 , 0.02 m 3 , 0.021 m 3 , 0.022 m 3 , 0.023 m 3 , 0.024 m 3 , 0.025m 3 , 0.026m 3 , 0.027m 3 , 0.028m 3 , 0.029m 3 , 0.03m 3 , 0.031m 3 , 0.032m 3 , etc., or
  • 0.0032 m 3 ⁇ W 1 *T 1 *K 1 ⁇ 0.032 m 3 which takes into account both the structural strength of the housing 211 and the heating requirement of the battery cell 21 , further improves the structural strength of the housing 211 , and reduces the risk of damage to overcurrent components in the circuit.
  • W 1 *T 1 *K 1 may be 0.00372 m 3 , 0.0039 m 3 , 0.0042 m 3 , 0.0046 m 3 , 0.0048 m 3 , 0.005 m 3 , 0.0052 m 3 , 0.0058 m 3 , 0.006 m 3 , 0.0062 m 3 , 0.0068 m 3 , 0.007 m 3 , 0.0072 m 3 , 0.0078 m 3 , 0.008 m 3 , 0.0082 m 3 , 0.0088 m 3 , 0.009 m 3 , 0.0092 m 3 , 0.0098 m 3 , 0.01 m 3 , 0.0102m 3 , 0.0108m 3 , 0.011m 3 , 0.0112m 3 , 0.0118m 3 , 0.012m 3 , 0.0125m 3 , etc., or a range value between any two of them.
  • it may be any one of 0.004m 3 , 0.0041m 3 , 0.0042m 3 , 0.0043m 3 , 0.0044m 3 , 0.0045m 3 , 0.0046m 3 , 0.0047m 3 , 0.0048m 3 , 0.0049m 3 , 0.005m 3 , 0.0051m 3 , 0.0052m 3 , 0.0053m 3 , 0.0054m 3 , 0.0055m 3 , 0.0056m 3 , 0.0057m 3 , 0.0058m 3 , 0.0059m 3 , 0.006m 3 , etc., or a range value between any two of them.
  • the positive electrode material of the battery cell 21 includes lithium-containing phosphate
  • the capacity of the battery cell 21 is C, and satisfies: C ⁇ 350Ah, C/((W 1 -a)*(T 1 -b)*(K 1 -c)) ⁇ 118Ah/L.
  • Lithium-containing phosphates include, but are not limited to, at least one of lithium iron phosphate (such as LiFePO4 (also referred to as LFP)), a composite material of lithium iron phosphate and carbon, lithium manganese phosphate (such as LiMnPO4), a composite material of lithium manganese phosphate and carbon, lithium iron manganese phosphate, and a composite material of lithium iron manganese phosphate and carbon.
  • LiFePO4 also referred to as LFP
  • LiMnPO4 lithium manganese phosphate
  • the positive electrode material of the battery cell 21 includes lithium phosphate and C ⁇ 350Ah
  • setting C/((W 1 -a)*(T 1 -b)*(K 1 -c)) to above 118Ah/L can increase the volume ratio of the internal space of the outer shell 211 of the battery cell 21, which is conducive to achieving a ratio of the volume of the internal space of the outer shell 211 of the battery cell 21 to the volume of the outer shell 211 of 0.9 or more.
  • the positive electrode material of the battery cell 21 includes a lithium transition metal oxide, and the capacity of the battery cell 21 is C, satisfying: C ⁇ 650Ah, C/((W 1 -a)*(T 1 -b)*(K 1 -c)) ⁇ 190Ah/L.
  • Lithium transition metal oxides include but are not limited to: lithium cobalt oxide (such as LiCoO 2 ), lithium nickel oxide (such as LiNiO 2 ), lithium manganese oxide
  • the present invention relates to at least one of lithium nickel cobalt oxide, lithium manganese cobalt oxide, lithium nickel manganese oxide , lithium nickel cobalt manganese oxide (such as LiNi 1/3 Co 1/3 Mn 1/3 O 2 (also referred to as NCM 333 ), LiNi 0.5 Co 0.2 Mn 0.3 O 2 (also referred to as NCM 523 ), LiNi 0.5 Co 0.25 Mn 0.25 O 2 (also referred to as NCM 211 ), LiNi 0.6 Co 0.2 Mn 0.2 O 2 (also referred to as NCM 622 ), LiNi 0.8 Co 0.1 Mn 0.1 O 2 (also referred to as NCM 811 ), lithium nickel cobalt aluminum oxide (such as LiNi 0.85 Co 0.15 Al 0.05 O 2 ) and modified compounds thereof.
  • the positive electrode material of the battery cell 21 includes a lithium transition metal oxide and C ⁇ 650Ah
  • setting C/((W 1 -a)*(T 1 -b)*(K 1 -c)) to above 190Ah/L can increase the volume ratio of the internal space of the outer shell 211 of the battery cell 21, which is conducive to achieving a ratio of the volume of the internal space of the outer shell 211 of the battery cell 21 to the volume of the outer shell 211 of 0.9 or above.
  • the battery cell 21 is a sodium ion battery cell 21 , and the capacity of the battery cell 21 is C, satisfying: C ⁇ 260Ah, C/((W 1 -a)*(T 1 -b)*(K 1 -c)) ⁇ 87Ah/L.

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Abstract

本申请实施例提供了一种储能装置，属于储能技术领域。储能装置包括箱体和多个电池单体，箱体具有电池仓，多个电池单体容纳于电池仓内，电池单体包括外壳和电极端子，电极端子设置于外壳。其中，电池仓的体积为V1，多个电池单体的外壳的体积之和为V2，0.4≤V2/V1≤0.95。使得所有电池单体在电池仓内的体积占比较大，从而提高了对电池仓的空间利用率，有利于提高储能装置的体积能量密度。

Description

储能装置 技术领域
本申请涉及储能技术领域，具体而言，涉及一种储能装置。
背景技术
储能装置为电能储存与转移设备，储能装置可以用于电力系统中，可以通过储能装置将用电谷期富余电能储存起来，以补充用电峰期用电。故储能装置既能够储存发电系统过多的发电量，又能够在发电系统发电量少时向电网输送电能。
储能装置通常包括箱体和设置在箱体内部的多个电池单体，多个电池单体串联、并联或混联，以储存电能。目前，储能装置的体积能量密度较低。因此，如何提高储能装置的体积能量密度是亟需解决的问题。
发明内容
本申请实施例提供一种储能装置，能够有效提高储能装置的体积能量密度问题。
本申请实施例提供一种储能装置，包括箱体和多个电池单体，箱体具有电池仓，多个电池单体容纳于电池仓内，电池单体包括外壳和电极端子，电极端子设置于外壳；其中，电池仓的体积为V1，多个电池单体的外壳的体积之和为V2，0.4≤V2/V1≤0.95。
在上述技术方案中，V2/V1≤0.95，使得所有电池单体在电池仓内的体积占比不至于过大，降低了储能装置的组装精度要求，能够有效将储能装置的制造成本控制在合理范围内。V2/V1≥0.4，使得所有电池单体在电池仓内的体积占比较大，从而提高了对电池仓的空间利用率，有利于提高储能装置的体积能量密度。
在一些实施例中，0.5≤V2/V1≤0.85。兼顾了储能装置的体积能量密度和经济性要求，有利于进一步降低了储能装置的制造成本，以及提高储能装置的体积能量密度。
在一些实施例中，0.52≤V2/V1≤0.75。既能够将储能装置的制造成本控制在相对较低的水平，又能够将储能装置体积能量密度控制在相对较高的水平。
在一些实施例中，每个电池单体的壳体的体积均为V3，电池仓内的电池单体的个数为N1，满足：V2＝V3*N1。这样，使得电池仓中的所有电池单体的外壳的体积相等，可以选用同一规格的电池单体。一方面，有利于提高储能装置的组装效率；另一方面，能够降低因电池仓内的电池单体的规格不同而造成空间浪费的概率。
在一些实施例中，0.0001≤V3/V1≤0.00025。V3/V1≥0.0001，使得电池单体的外壳在电池仓内的体积占比较大，在电池仓的体积一定的情况下，能够减小电池单体的数量，降低因电池单体数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置的体积能量密度；V3/V1≤0.00025，使得电池单体的外壳在电池仓内的体积占比不至于过大，降低电池单体的制造难度和制造成本。
在一些实施例中，0.00015≤V3/V1≤0.0002。兼顾了储能装置的体积能量密度、电池单体制造难易程度以及电池单体经济性要求，有利于提高储能装置的体积能量密度，以及降低电池单体的制造难度和制造成本。
在一些实施例中，0.0026m3≤V3≤0.008m3。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，0.004m3≤V3≤0.006m3。既能够将储能装置的体积能量密度控制在相对较高水平，又能够将电池单体的制造成本控制在较低水平。
在一些实施例中，箱体的体积为V，满足：0.45≤V1/V≤0.75。V1/V≥0.45，使得电池仓的体积在箱体的体积中的占比较大，增大箱体内可利用的有效空间，有利于提高储能装置的体积能量密度。V1/V≤0.75，使得电池仓的体积不至于过大，储能装置能够为其他部件预留更多的安装空间，降低其他部件的安装难度。
在一些实施例中，0.55≤V1/V≤0.65。能够兼顾储能装置的体积能量密度和储能装置的其他部件的安装便捷性要求。
在一些实施例中，20m3≤V≤80m3。V≥20m3，使得箱体的体积较大，有利于实现储能装置的大能量要求，以储存更多的电能；V≤80m3，使得箱体的体积不至于过大，便于储能装置的搬运、运输。
在一些实施例中，35m3≤V≤50m3。能够进一步兼顾储能装置的大能量和储能装置搬运、运输的便捷性要求。
在一些实施例中，电池仓内容纳有沿箱体的长度方向排布的多个电池单体；沿箱体的长度方向，电池仓的尺寸为L1，电池仓内排布的多个电池单体的外壳的尺寸之和为L2，满足：0.6≤L2/L1≤0.95。L2/L1≥0.6，使得沿箱体的长度方向排布的多个电池单体的外壳在电池仓内沿箱体的长度方向的尺寸占比较大，在箱体的长度方向充分利用电池仓的空间，减小相邻的两个电池单体的外壳在箱体的长度方向上的间隙，有利于提高所有电池单体的外壳在电池仓中的体积占比，有利于提高储能装置的体积能量密度。L2/L1≤0.95，使得电池仓在箱体的长度方向具有足够的安装多个电池单体的安装余量，降低电池单体的安装难度。
在一些实施例中，0.75≤L2/L1≤0.9。这样，兼顾了储能装置的体积能量密度和电池单体在箱体的长度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池单体在箱体的长度方向上的安装难度。
在一些实施例中，沿箱体的长度方向，每个电池单体的外壳的尺寸均为L3，电池仓内排布有N2个电池单体，满足：L2＝L3*N2。这样，使得多个电池单体的外壳沿箱体的长度方向的尺寸相等，能够有效降低因电池单体的外壳沿箱体的长度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体沿箱体的 长度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，0.03≤L3/L1≤0.12。L3/L1≥0.03，使得电池单体的外壳在电池仓内沿箱体的长度方向的尺寸占比较大，在电池仓在箱体的长度方向的尺寸一定的情况下，能够减小电池仓内沿箱体的长度方向所容纳的电池单体的个数，降低因电池单体数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置的体积能量密度。L3/L1≤0.12，使得电池单体的外壳在电池仓内沿箱体的长度方向的尺寸占比不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.055≤L3/L1≤0.09。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，0.17m≤L3≤0.6m。L3≥0.17m，使得电池单体的外壳沿箱体的长度方向的尺寸较大，有利于提高电池单体的外壳在电池仓内沿箱体的长度方向的尺寸的占比，有利于提高储能装置的体积能量密度。L3≤0.6m，使得电池单体的外壳沿箱体的长度方向的尺寸不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.2m≤L3≤0.45m。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，沿箱体的长度方向，箱体的尺寸为L，满足：0.65≤L1/L≤0.95。L1/L≥0.65使得电池仓在箱体中沿箱体的长度方向的尺寸占比较大，增大电池仓沿箱体的长度方向的尺寸，以为电池单体提供更多的空间，有利于提高储能装置的体积能量密度。L1/L≤0.95，使得箱体在长度方向上未被电池仓占用的部分的余量充足，使得箱体具有足够的结构强度。
在一些实施例中，0.75≤L1/L≤0.9。能够兼顾储能装置的体积能量密度和箱体的结构强度的要求，既有利于提高储能装置的体积能量密度，又能够进一步提高箱体的结构强度。
在一些实施例中，3m≤L≤9m。L≥3m，使得箱体沿长度方向的尺寸较大，可以将电池仓沿箱体的长度方向尺寸做大，有利于提高电池仓在箱体中沿箱体的长度方向的尺寸占比，有利于提高储能装置的体积能量密度。L≤9m，使得箱体沿长度方向的尺寸不至于过大，便于储能装置的搬运、运输。
在一些实施例中，5m≤L≤7m。能够进一步兼顾储能装置的体积能量密度和储能装置搬运、运输的便捷性要求。
在一些实施例中，电池仓内容纳有沿箱体的宽度方向排布的多个电池单体；沿箱体的宽度方向，电池仓的尺寸为D1，电池仓内排布的多个电池单体的外壳的尺寸之和为D2，满足：0.6≤D2/D1≤0.95。D2/D1≥0.6，使得沿箱体宽度方向排布的多个电池单体的外壳在电池仓内沿箱体的宽度方向的尺寸占比较大，在箱体的宽度方向充分利用电池仓的空间，减小相邻的两个电池单体的外壳在箱体的宽度方向上的间隙，有利于提高所有电池单体的外壳在电池仓中的体积占比，有利于提高储能装置的体积能量密度。D2/D1≤0.95，使得电池仓在箱体的宽度方向具有足够的安装多个电池单体的安装余量，降低电池单体的安装难度。
在一些实施例中，0.75≤D2/D1≤0.9。这样，兼顾了储能装置的体积能量密度和电池单体在箱体的宽度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池单体在箱体的宽度方向上的安装难度。
在一些实施例中，沿箱体的宽度方向，每个电池单体的外壳的尺寸均为D3，电池仓内排布有N3个电池单体，满足：D2＝D3*N3。这样，使得多个电池单体的外壳沿箱体的宽度方向的尺寸相等，能够有效降低因电池单体的外壳沿箱体的宽度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体沿箱体的宽度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，0.02≤D3/D1≤0.05。D3/D1≥0.02，使得电池单体的外壳在电池仓内沿箱体的宽度方向的尺寸占比较大，在电池仓在箱体的宽度方向的尺寸一定的情况下，能够减小电池仓内沿箱体的宽度方向所容纳的电池单体的个数，降低因电池单体数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置的体积能量密度。D3/D1≤0.05，使得电池单体的外壳在电池仓内沿箱体的宽度方向的尺寸占比不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.032≤D3/D1≤0.04。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，0.04m≤D3≤0.12m。D3≥0.04m，使得电池单体的外壳沿箱体的宽度方向的尺寸较大，有利于提高电池单体的外壳在电池仓内沿箱体的宽度方向的尺寸的占比，有利于提高储能装置的体积能量密度。D3≤0.12m，使得电池单体的外壳沿箱体的宽度方向的尺寸不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.06m≤D3≤0.08m。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，沿箱体的宽度方向，箱体的尺寸为D，满足：0.65≤D1/D≤0.99。D1/D≥0.65使得电池仓在箱体中沿箱体的宽度方向的尺寸占比较大，增大电池仓沿箱体的宽度方向的尺寸，以为电池单体提供更多的空间，有利于提高储能装置的体积能量密度。D1/D≤0.95，使得箱体在宽度方向上未被电池仓占用的部分的余量充足，使得箱体具有足够的结构强度。
在一些实施例中，0.75≤D1/D≤0.92。能够兼顾储能装置的体积能量密度和箱体的结构强度的要求，既有利于提高储能装置的体积能量密度，又能够进一步提高箱体的结构强度。
在一些实施例中，1.5m≤D≤3.5m。D≥1.5m，使得箱体沿宽度方向的尺寸较大，可以将电池仓沿箱体的宽度方向尺寸做大，有利于提高电池仓在箱体中沿箱体的宽度方向的尺寸占比，有利于提高储能装置的体积能量密度。L≤D≤3.5m，使得箱体沿宽度方向的尺寸不至于过大，便于储能装置的搬运、运输。
在一些实施例中，2m≤D≤3m。能够进一步兼顾储能装置的体积能量密度和储能装置搬运、运输的便捷性要求。
在一些实施例中，电池仓内容纳有沿箱体的高度方向排布的多个电池单体；沿箱体的高度方向，电池仓的尺寸为H1，电池仓内排布的多个电池单体的外壳的尺寸之和为H2，满足：0.6≤H2/H1≤0.95。H2/H1≥0.6，使得沿箱体高度方向排布的多个电池单体的外壳在电池仓内沿箱体的高度方向的尺寸占比较大，在箱体的高度方向充分利用电池仓的空间，减小相邻的两个电池单体的外壳在箱体的高度方向上的间隙，有利于提高所有电池单体的外壳在电池仓中的体积占比，有利于提高储能装置的体积能量密度。H2/H1≤0.95，使得电池仓在箱体的高度方向具有足够的安装多个电池单体的安装余量，降低电池单体的安装难度。
在一些实施例中，0.7≤H2/H1≤0.9。这样，兼顾了储能装置的体积能量密度和电池单体在箱体的高度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池单体在箱体的高度方向上的安装难度。
在一些实施例中，沿箱体的高度方向，每个电池单体的外壳的尺寸均为H3，电池仓内排布有N4个电池单体，满足：H2＝H3*N4。这样，使得多个电池单体的外壳沿箱体的高度方向的尺寸相等，能够有效降低因电池单体的外壳沿箱体的高度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体沿箱体的高度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，0.07≤H3/H1≤0.12。H3/H1≥0.07，使得电池单体的外壳在电池仓内沿箱体的高度方向的尺寸占比较大，在电池仓在箱体的高度方向的尺寸一定的情况下，能够减小电池仓内沿箱体的高度方向所容纳的电池单体的个数，降低因电池单体数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置的体积能量密度。H3/H1≤0.12，使得电池单体的外壳在电池仓内沿箱体的高度方向的尺寸占比不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.08≤H3/H1≤0.1。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，0.17m≤H3≤0.6m。H3≥0.17m，使得电池单体的外壳沿箱体的高度方向的尺寸较大，有利于提高电池单体的外壳在电池仓内沿箱体的高度方向的尺寸的占比，有利于提高储能装置的体积能量密度。H3≤0.6m，使得电池单体的外壳沿箱体的高度方向的尺寸不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.2m≤H3≤0.45m。有利于进一步提高储能装置的体积能量密度，降低电池单体的制造成本。
在一些实施例中，沿箱体的高度方向，箱体的尺寸为H，满足：0.55≤H1/H≤0.85。H1/H≥0.55使得电池仓在箱体中沿箱体的高度方向的尺寸占比较大，增大电池仓沿箱体的高度方向的尺寸，以为电池单体提供更多的空间，有利于提高储能装置的体积能量密度。H1/H≤0.85，使得箱体在高度方向上未被电池仓占用的部分的余量充足，使得箱体具有足够的结构强度。
在一些实施例中，0.65≤H1/H≤0.78。能够兼顾储能装置的体积能量密度和箱体的结构强度的要求，既有利于提高储能装置的体积能量密度，又能够进一步提高箱体的结构强度。
在一些实施例中，1.5m≤H≤3.5m。H≥1.5m，使得箱体沿高度方向的尺寸较大，可以将电池仓沿箱体的高度方向尺寸做大，有利于提高电池仓在箱体中沿箱体的高度方向的尺寸占比，有利于提高储能装置的体积能量密度。H≤3.5m，使得箱体沿高度方向的尺寸不至于过大，便于储能装置的搬运、运输。
在一些实施例中，2m≤H≤3m。能够进一步兼顾储能装置的体积能量密度和储能装置搬运、运输的便捷性要求。
在一些实施例中，电池仓内容纳有至少一个电池，电池包括多个电池单体。在组装时，可以先将多个电池单体组装成电池，再将电池安装于于电池仓内，由多个电池单体组成的电池体积更大，更容易安装在电池仓内，组装效率高。
在一些实施例中，电池仓内容纳有沿箱体的长度方向排布的多个电池；沿箱体的长度方向，电池仓的尺寸为L1，电池仓内排布的多个电池的尺寸之和为L4，满足：0.7≤L4/L1≤0.96。电池仓内容纳有沿箱体的长度方向排布的多个电池，使得单个电池沿箱体的长度方向的尺寸不至于过大，降低电池的制造难度和安装难度。L4/L1≥0.7，使得沿箱体的长度方向排布的多个电池在电池仓内沿箱体的长度方向的尺寸占比较大，在箱体的长度方向充分利用电池仓的空间，减小相邻的两个电池在箱体的长度方向上的间隙，有利于提高所有电池在电池仓中的体积占比，有利于提高储能装置的体积能量密度。L4/L1≤0.96，使得电池仓在箱体的长度方向具有足够的安装多个电池的安装余量，降低电池的安装难度。
在一些实施例中，0.78≤L4/L1≤0.91。这样，兼顾了储能装置的体积能量密度和电池在箱体的长度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的长度方向上的安装难度。
在一些实施例中，沿箱体的长度方向，每个电池的尺寸为L5，电池仓内排布有N5个电池，满足：L4＝L5*N5。这样，使得多个电池沿箱体的长度方向的尺寸相等，能够有效降低因电池沿箱体的长度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池沿箱体的长度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，1m≤L5≤1.5m，2≤N5≤6。这样，沿箱体的长度方向，每个电池的尺寸较大，且电池的数量不至于过多，可以减小电池中除了电池单体以外的其他部件所占用的空间，有利于提高沿箱体的长度方向排布的多个电池在电池仓内沿箱体的长度方向的尺寸占比。
在一些实施例中，沿箱体的长度方向，电池仓仅容纳一个电池，电池仓的尺寸为L1，电池的尺寸为L5，满足：0.8≤L5/L1≤0.99。电池仓沿箱体的长度方向仅容纳一个电池，有利于提高对电池仓沿箱体的长度方向的空间的利用率。L5/L1≥0.8，使得电池在电池仓内沿箱体的长度方向的尺寸占比较大，在箱体的长度方向充分利用电池仓的空间，有利于提高电池仓内的所有电池的体积占比，有利于提高储能装置的体积能量密度。L5/L1≤0.99，使得电池仓在箱体的长度方向具有足够的安装电池的安装余量，降低电池的安装难度。
在一些实施例中，0.85≤L5/L1≤0.93。这样，兼顾了储能装置的体积能量密度和电池在箱体的长度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的长度方向上的安装难度。
在一些实施例中，4m≤L5≤8m。L5≥4m，使得电池沿箱体的长度方向的尺寸较大，电池中沿箱体的长度方向可以排布更多地电池单体，可以满足储能装置的大能量要求；L5≤8m，使得电池沿箱体的长度方向的尺寸不至于过大，降低电池的制造难度和安装难度。
在一些实施例中，5.5m≤L5≤6.8m。兼顾了储能装置的大能量和电池的经济性、安装便捷性要求。
在一些实施例中，电池仓内容纳有沿箱体的宽度方向排布的多个电池；沿箱体的宽度方向，电池仓的尺寸为D1，电池仓内排布的多个电池的尺寸之和为D4，满足：0.7≤D4/D1≤0.96。电池仓内容纳有沿箱体的宽度方向排布的多个电池，使得单个电池沿箱体的宽度方向的尺寸不至于过大，降低电池的制造难度和安装难度。D4/D1≥0.7，使得沿箱体的宽度方向排布的多个电池在电池仓内沿箱体的宽度方向的尺寸占比较大，在箱体的宽度方向充分利用电池仓的空间，减小相邻的两个电池在箱体的宽度方向上的间隙，有利于提高所有电池在电池仓中的体积占比，有利于提高储能装置的体积能量密度。D4/D1≤0.96，使得电池仓在箱体的宽度方向具有足够的安装多个电池的安装余量，降低电池的安装难度。
在一些实施例中，0.78≤D4/D1≤0.91。这样，兼顾了储能装置的体积能量密度和电池在箱体的宽度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的宽度方向上的安装难度。
在一些实施例中，沿箱体的宽度方向，每个电池的尺寸为D5，电池仓内排布有N6个电池，满足：D4＝D5*N6。这样，使得多个电池沿箱体的宽度方向的尺寸相等，能够有效降低因电池沿箱体的宽度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池沿箱体的宽度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，1m≤D5≤1.5m，2≤N6≤3。这样，沿箱体的宽度方向，每个电池的尺寸较大，且电池的数量不至于过多，可以减小电池中除了电池单体以外的其他部件所占用的空间，有利于提高沿箱体的宽度方向排布的多个电池在电池仓内沿箱体的宽度方向的尺寸占比。
在一些实施例中，沿箱体的宽度方向，电池仓仅容纳一个电池，电池仓的尺寸为D1，电池的尺寸为D5，满足：0.8≤D5/D1≤0.99。电池仓沿箱体的宽度方向仅容纳一个电池，有利于提高对电池仓沿箱体的宽度方向的空间的利用率。D5/D1≥0.8，使得电池在电池仓内沿箱体的宽度方向的尺寸占比较大，在箱体的宽度方向充分利用电池仓的空间，有利于提高电池仓内的所有电池的体积占比，有利于提高储能装置的体积能量密度。D5/D1≤0.99，使得电池仓在箱体的宽度方向具有足够的安装电池的安装余量，降低电池的安装难度。
在一些实施例中，0.85≤D5/D1≤0.93。这样，兼顾了储能装置的体积能量密度和电池在箱体的宽度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的宽度方向上的安装难度。
在一些实施例中，1.5m≤D5≤2.5m。D5≥1.5m，使得电池沿箱体的宽度方向的尺寸较大，电池中沿箱体的宽度方向可以排布更多地电池单体，可以满足储能装置的大能量要求；D5≤2.5m，使得电池沿箱体的宽度方向的尺寸不至于过大，降低电池的制造难度和安装难度。
在一些实施例中，1.7m≤D5≤2.3m。兼顾了储能装置的大能量和电池的经济性、安装便捷性要求。
在一些实施例中，电池仓内容纳有沿箱体的高度方向排布的多个电池；沿箱体的高度方向，电池仓的尺寸为H1，电池仓内排布的多个电池的尺寸之和为H4，满足：0.6≤H4/H1≤0.99。电池仓内容纳有沿箱体的高度方向排布的多个电池，使得单个电池沿箱体的高度方向的尺寸不至于过大，降低电池的制造难度和安装难度。H4/H1≥0.6，使得沿箱体的高度方向排布的多个电池在电池仓内沿箱体的高度方向的尺寸占比较大，在箱体的高度方向充分利用电池仓的空间，减小相邻的两个电池在箱体的高度方向上的间隙，有利于提高所有电池在电池仓中的体积占比，有利于提高储能装置的体积能量密度。H4/H1≤0.99，使得电池仓在箱体的高度方向具有足够的安装多个电池的安装余量，降低电池的安装难度。
在一些实施例中，0.7≤H4/H1≤0.92。这样，兼顾了储能装置的体积能量密度和电池在箱体的高度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的高度方向上的安装难度。
在一些实施例中，沿箱体的高度方向，每个电池的尺寸为H5，电池仓内排布有N7个电池，满足：H4＝H5*N7。这样，使得多个电池沿箱体的高度方向的尺寸相等，能够有效降低因电池沿箱体的高度方向的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池沿箱体的高度方向排布，提高储能装置的组装效率，降低储能装置的制造成本。
在一些实施例中，0.2m≤H5≤0.3m，2≤N7≤10。这样，沿箱体的高度方向，每个电池的尺寸较大，且电池的数量不至于过多，可以减小电池中除了电池单体以外的其他部件所占用的空间，有利于提高沿箱体的高度方向排布的多个电池在电池仓内沿箱体的高度方向的尺寸占比。
在一些实施例中，沿箱体的高度方向，电池仓仅容纳一个电池，电池仓的尺寸为H1，电池的尺寸为H5， 满足：0.8≤H5/H1≤0.99。电池仓沿箱体的高度方向仅容纳一个电池，有利于提高对电池仓沿箱体的高度方向的空间的利用率。H5/H1≥0.8，使得电池在电池仓内沿箱体的高度方向的尺寸占比较大，在箱体的高度方向充分利用电池仓的空间，有利于提高电池仓内的所有电池的体积占比，有利于提高储能装置的体积能量密度。H5/H1≤0.99，使得电池仓在箱体的高度方向具有足够的安装电池的安装余量，降低电池的安装难度。
在一些实施例中，0.85≤H5/H1≤0.93。这样，兼顾了储能装置的体积能量密度和电池在箱体的高度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的高度方向上的安装难度。
在一些实施例中，1.5m≤H5≤2.5m。H5≥1.5m，使得电池沿箱体的高度方向的尺寸较大，电池中电池单体沿箱体的高度方向的尺寸较大，可以满足储能装置的大能量要求；H5≤2.5m，使得电池沿箱体的高度方向的尺寸不至于过大，降低电池的制造难度和安装难度。
在一些实施例中，1.7m≤H5≤2.3m。兼顾了储能装置的大能量和电池的经济性、安装便捷性要求。
在一些实施例中，电池仓包括多个子仓，多个子仓沿箱体的长度方向排布，每个子仓均容纳有至少一个电池。将电池仓分为多个子仓，每个子仓内均可容纳电池，使得电池能够更为规则地容纳在电池仓内，更容易实现电池的安装。
在一些实施例中，子仓的体积为V4，子仓内的电池的体积之和为V5，满足；0.75≤V5/V4≤0.95。V5/V4≥0.75，使得子仓内的所有电池的体积占比较大，从而提高了对子仓的空间利用率，有利于提高储能装置的体积能量密度。V5/V4≤0.95，使得子仓内的所有电池的体积占比不至于过大，降低了电池装入子仓内的组装精度要求，能够有效将储能装置的制造成本控制在合理范围内。
在一些实施例中，0.82≤V5/V4≤0.9。兼顾了储能装置的体积能量密度要求和经济性要求，有利于进一步降低了储能装置的制造成本，以及提高储能装置的体积能量密度。
在一些实施例中，沿箱体的长度方向，子仓仅容纳一个电池。有利于提高电池在子仓内沿箱体的长度方向的占比，有利于提高对子仓沿箱体的长度方向的空间的利用率。
在一些实施例中，沿箱体的长度方向，子仓的尺寸为L6，电池的尺寸L5，满足：0.85≤L5/L6≤0.99。L5/L6≥0.85，使得电池在子仓内沿箱体的长度方向的尺寸占比较大，在箱体的长度方向充分利用子仓的空间，有利于提高子仓内所有电池的体积占比，有利于提高储能装置的体积能量密度。L5/L6≤0.99，使得子仓在箱体的长度方向具有足够的安装电池的安装余量，降低电池的安装难度。
在一些实施例中，0.88≤L5/L6≤0.95。这样，兼顾了储能装置的体积能量密度和电池在箱体的长度方向上安装便捷性要求，既有利于提高储能装置的体积能量密度，又能够进一步降低电池在箱体的长度方向上的安装难度。
在一些实施例中，沿箱体的宽度方向，子仓仅容纳一个电池。有利于提高电池在子仓内沿箱体的宽度方向的占比，有利于提高对子仓沿箱体的宽度方向的空间的利用率。
在一些实施例中，沿箱体的高度方向，子仓容纳有多个电池。这样，可以降低单个电池在箱体的高度方向的尺寸，降低电池的制造难度和制造成本。
在一些实施例中，子仓的个数小于等于4。这样，电池仓内分隔相邻的两个子仓的分隔部件较少，减少分隔部件占用电池仓的空间，以为电池提供更多的空间，提高了电池仓的空间利用率。
在一些实施例中，电池的体积为V6，电池的多个电池单体的外壳的体积之和为V7，满足：0.5≤V7/V6≤0.8。V7/V6≥0.5，使得电池的所有电池单体在电池中的体积占比较大，提高了对电池内部空间的利用率，有利于提高电池的体积能量密度，以提高储能装置的体积能量密度；V7/V6≤0.8，使得电池的所有电池单体在电池中的体积占比不至于过大，为电池的其他部件提供更多的空间，降低电池的组装难度和制造成本。
在一些实施例中，0.58≤V7/V6≤0.7。兼顾了电池的体积能量密度和电池的经济性、组装便捷性要求。有利于进一步提高电池的体积能量密度，以及降低电池的组装难度和制造成本。
在一些实施例中，电池的电池单体的个数为N8，每个电池单体的外壳的体积为V3，满足：V7＝V3*N8。这样，使得电池的所有电池单体的外壳的体积相等，可以选用同一规格的电池单体。一方面，有利于提高电池的组装效率；另一方面，能够降低因电池的电池单体的规格不同而造成空间浪费的开率。
在一些实施例中，电池包括p*q个电池单体，p*q个电池单体呈p行q列排布，每行电池单体沿箱体的长度方向设置，每列电池单体沿箱体的宽度方向设置，p和q均为正整数。这样，使得电池的所有电池单体呈矩形阵列分布，有利于提升电池的空间利用率。
在一些实施例中，在每行电池单体中，q个电池单体的外壳沿箱体的长度方向的尺寸之和为L7，电池沿箱体的长度方向的尺寸为L5，满足：0.8≤L7/L5≤0.95。L7/L5≥0.8，使得每行电池单体的外壳在电池中沿箱体的长度方向的尺寸占比较大，充分利用电池在箱体的长度方向上的空间，减小相邻的两个电池单体的外壳在箱体的长度方向上的间隙，有利于提高电池内的所有电池单体的外壳的体积占比，有利于提高电池的体积能量密度。L7/L5≤0.95，每行电池单体的外壳在电池中沿箱体的长度方向的尺寸占比不至于过大，降低电池的制造难度和制造成本。
在一些实施例中，0.85≤L7/L5≤0.9。兼顾了电池的体积能量密度、电池的制造难易程度以及电池经济性要求。有利于进一步提高电池的体积能量密度，以及降低电池的制造难度和制造成本。
在一些实施例中，沿箱体的长度方向，每个电池单体的外壳的尺寸均为L3，满足：L3＝L7/q，0.17m≤L3≤0.6m，1≤q≤5。L3＝L7/q，使得电池中每行中的电池单体的外壳沿箱体的长度方向的尺寸相等，每行中的电池单体可以选用规格相同的电池单体。而0.17m≤L3≤0.6m，且1≤q≤5，这样，在每行电池单体中，每个电池单体的尺寸较大，且电池的数量不至于过多，可以减少外壳在箱体的长度方向上的壁所占用的空间，有利于提高每行电池单体的外壳在电池中沿箱体的长度方向的尺寸占比，有利于提高电池的空间利用率，以提高电池的体积能量密度。
在一些实施例中，q＝4，0.2m≤L3≤0.3m。当每行电池单体中的电池单体为四个时，将电池单体的外壳的尺寸控制在0.2m～0.3m范围内，使得电池具有较高的体积能量密度。
在一些实施例中，q＝2，0.4m≤L3≤0.6m。当每行电池单体中的电池单体为两个时，将电池单体的外壳的尺寸控制在0.4m≤L3≤0.6m范围内，使得电池具有较高的体积能量密度。
在一些实施例中，在每列电池单体中，p个电池单体的外壳沿箱体的宽度方向的尺寸之和为D7，电池沿箱体的宽度方向的尺寸为D5，满足：0.75≤D7/D5≤0.95。D7/D5≥0.75，使得每列电池单体的外壳在电池中沿箱体的宽度方向的尺寸占比较大，充分利用电池在箱体的宽度方向上的空间，减小相邻的两个电池单体的外壳在箱体的宽度方向上的间隙，有利于提高电池内的所有电池单体的外壳的体积占比，有利于提高电池的体积能量密度。D7/D5≤0.95，每列电池单体的外壳在电池中沿箱体的宽度方向的尺寸占比不至于过大，降低电池的制造难度和制造成本。
在一些实施例中，0.82≤D7/D5≤0.9。兼顾了电池的体积能量密度、电池的制造难易程度以及电池经济性要求。有利于进一步提高电池的体积能量密度，以及降低电池的制造难度和制造成本。
在一些实施例中，沿箱体的宽度方向，每个电池单体的外壳的尺寸均为D3，满足：D3＝D7/p，0.04m≤D3≤0.12m，20≤p≤30。D3＝D7/p，使得电池中每列中的电池单体的外壳沿箱体的宽度方向的尺寸相等，每列中的电池单体可以选用规格相同的电池单体。而0.04m≤D3≤0.12m，20≤p≤30，这样，在每列电池单体中，每个电池单体的尺寸较大，且电池的数量不至于过多，可以减少外壳在箱体的宽度方向上的壁所占用的空间，有利于提高每列电池单体的外壳在电池中沿箱体的宽度方向的尺寸占比，有利于提高电池的空间利用率，以提高电池的体积能量密度。
在一些实施例中，0.06m≤D3≤0.08m，24≤p≤28。这样的电池具有较高的体积能量密度。
在一些实施例中，电池单体的外壳沿箱体的高度方向的尺寸为H3，电池沿箱体的高度方向的尺寸为H5，满足：0.75≤H3/H5≤0.95。H3/H5≥0.75，使得电池单体的外壳在电池中沿箱体的高度方向的尺寸占比较大，充分利用了电池在箱体的高度方向上的空间，有利于提高电池内的所有电池单体的外壳的体积占比，有利于提高电池的体积能量密度。H3/H5≤0.95，使得电池单体的外壳在电池中沿箱体的高度方向的尺寸占比不至于过大，降低电池的制造难度和制造成本。
在一些实施例中，0.82≤H3/H5≤0.9。兼顾了电池的体积能量密度、电池的制造难易程度以及电池经济性要求。有利于进一步提高电池的体积能量密度，以及降低电池的制造难度和制造成本。
在一些实施例中，0.17m≤H3≤0.6m。H3≥0.17m，使得电池单体的外壳沿箱体的高度方向的尺寸较大，有利于提高电池单体的外壳在电池中沿箱体的高度方向的尺寸的占比，有利于提高电池单体的体积能量密度。H3≤0.6m，使得电池单体的外壳沿箱体的高度方向的尺寸不至于过大，能够有效降低电池单体的制造难度和制造成本。
在一些实施例中，0.2m≤H3≤0.45m。兼顾了电池的体积能量密度、电池的制造难易程度以及电池经济性要求。有利于进一步提高电池的体积能量密度，以及降低电池的制造难度和制造成本。
在一些实施例中，电池单体还包括至少一个电极组件，电极组件容纳于外壳内；外壳呈直平行六面体状，外壳在第一方向上的尺寸为W1，外壳在第二方向上的尺寸为T1，外壳在第三方向上的尺寸为K1，第一方向、第二方向和第三方向三者中的一者平行于箱体的长度方向，另一者平行于箱体的宽度方向，再一者平行于箱体的高度方向；外壳包括沿第一方向相对设置的第一壁和第二壁、沿第二方向相对设置的第三壁和第四壁、沿第三方向相对设置的第五壁和第六壁，第一壁和第二壁的厚度之和为a，第三壁和第四壁的厚度之和为b，第五壁和第六壁的厚度之和为c，满足：(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9。在这样的电池单体中，电池单体的外壳的内部空间的体积与外壳的体积的比值在0.9以上，使得外壳的内部空间占比较大，外壳可以用来容纳电极组件的空间增大，在相同的化学体系下，电池单体的体积能量密度可以得到提高。
在一些实施例中，(W1-a)/W1≥0.97，(T1-b)/T1≥0.965，且(K1-c)/K1≥0.965。这样，可以提高外壳的内部空间在三个方向上尺寸占比，进一步提高电池单体的体积能量密度。
在一些实施例中，外壳包括壳体和端盖，壳体具有开口，端盖盖合于开口，端盖设置有电极端子；壳体包括一体成型的第一壁、第二壁、第三壁、第四壁和第五壁，端盖为第六壁。在组装电池时，可以先将电极端子安装于端盖，再将电极组件容纳于壳体内，再将端盖盖合于壳体的开口，可以降低将电极组件安装于外壳内的难度以及降低将电极端子安装于外壳的难度。
在一些实施例中，电池单体还包括第一绝缘件和第二绝缘件，第一绝缘件设置于第五壁和电极组件之间，并与第五壁抵接；第二绝缘件设置于第六壁和电极组件之间，并与第六壁抵接；第一绝缘件在第三方向上的最大尺寸为e1，第二绝缘件在第三方向上的最大尺寸为e2，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.88，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。这样，使得外壳的内部留给电极组件的空间增大，允许容纳体积更大的电极组件，以使电池单体的体积能量密度进一步得到提高。
在一些实施例中，电池单体还包括第一绝缘件和第二绝缘件，第一绝缘件设置于第五壁和电极组件之间，并与第五壁抵接；第二绝缘件设置于第六壁和电极组件之间，并与第六壁抵接；第一绝缘件在第三方向上的最大尺寸为e1，第二绝缘件在第三方向上的最大尺寸为e2，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.85，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。这样，使得外壳的内部留给电极组件的空间增大，允许容纳体积更大的电极组件，以使电池单体的体积能量密度进一步得到提高。
在一些实施例中，W1≥T1，第一方向平行于箱体的长度方向，第二方向平行于箱体的宽度方向，第三方向平行于箱体的高度方向。在壳体只有一端设置端盖且W1≥T1的情况下，将外壳的端盖和第五壁沿箱体的高度方向相对设置，将外壳的第一壁和第二壁沿箱体的长度方向相对设置，并将外壳的第三壁和第四壁沿箱体的宽度方向相对设置，有利于提高所有电池单体在电池仓内的体积占比。
在一些实施例中，外壳包括壳体和两个端盖，壳体具有沿第三方向相对设置的两个开口，两个端盖分别 盖合于两个开口，至少一个端盖设置有电极端子；壳体包括一体成型的第一壁、第二壁、第三壁和第四壁，两个端盖分别为第五壁和第六壁。
在一些实施例中，电池单体还包括第三绝缘件和第四绝缘件，第三绝缘件设置于第五壁和电极组件之间，并与第五壁抵接；第四绝缘件设置于第六壁和电极组件之间，并与第六壁抵接；第三绝缘件在第三方向上的最大尺寸为e3，第四绝缘件在第三方向上的最大尺寸为e4，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.88，2mm≤e3≤10mm，且2mm≤e4≤10mm。这样，使得外壳的内部留给电极组件的空间增大，允许容纳体积更大的电极组件，以使电池单体的体积能量密度进一步得到提高。
在一些实施例中，电池单体还包括第三绝缘件和第四绝缘件，第三绝缘件设置于第五壁和电极组件之间，并与第五壁抵接；第四绝缘件设置于第六壁和电极组件之间，并与第六壁抵接；第三绝缘件在第三方向上的最大尺寸为e3，第四绝缘件在第三方向上的最大尺寸为e4，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.85，2mm≤e3≤10mm，且2mm≤e4≤10mm。这样，使得外壳的内部留给电极组件的空间增大，允许容纳体积更大的电极组件，以使电池单体的体积能量密度进一步得到提高。
在一些实施例中，W1≥T1，第一方向平行于箱体的高度方向，第二方向平行于箱体的宽度方向，第三方向平行于箱体的长度方向。在壳体两端均设置端盖且W1≥T1的情况下，将外壳的两个端盖沿箱体的长度方向布置，将外壳的第一壁和第二壁沿箱体的高度方向布置，并将外壳的第三壁和第四壁沿箱体的宽度方向相对设置，有利于提高所有电池单体在电池仓内的体积占比。
在一些实施例中，0.003m3≤W1*T1*K1≤0.04m3。W1*T1*K1≥0.003m3，使得在满足外壳的内部空间的体积与外壳的体积的比值在0.9以上的情况下，外壳的壁厚不至于太小，从而能够满足对外壳的结构强度要求；W1*T1*K1≤0.04m3，可以将电池单体的容量和电流控制在合适的范围内，降低电路中的过流元件损伤的风险。
在一些实施例中，0.0032m3≤W1*T1*K1≤0.032m3。兼顾了外壳的结构强度和电池单体的发热量要求，进一步提高外壳的结构强度，以及降低电路中的过流元件损伤的风险。
在一些实施例中，0.00372m3≤W1*T1*K1≤0.0125m3。
在一些实施例中0.004m3≤W1*T1*K1≤0.006m3。
在一些实施例中，电池单体的正极材料包括含锂磷酸盐，电池单体的容量为C，满足：C≥350Ah，C/(W1-a)*(T1-b)*(K1-c)≥118Ah/L。在电池单体的正极材料包括含锂磷酸盐，且C≥350Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在118Ah/L以上，可以提高电池单体的外壳的内部空间的体积占比，有利于实现电池单体的外壳的内部空间的体积与外壳的体积的比值在0.9以上。
在一些实施例中，电池单体的正极材料包括锂过渡金属氧化物，电池单体的容量为C，满足：C≥650Ah，C/((W1-a)*(T1-b)*(K1-c))≥190Ah/L。在电池单体的正极材料包括锂过渡金属氧化物，且C≥650Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在190Ah/L以上，可以提高电池单体的外壳的内部空间的体积占比，有利于实现电池单体的外壳的内部空间的体积与外壳的体积的比值在0.9以上。
在一些实施例中，电池单体为钠离子电池单体，电池单体的容量为C，满足：C≥260Ah，C/((W1-a)*(T1-b)*(K1-c))≥87Ah/L。在电池单体为钠离子电池单体，且C≥260Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在87Ah/L以上，可以提高电池单体的外壳的内部空间的体积占比，有利于实现电池单体的外壳的内部空间的体积与外壳的体积的比值在0.9以上。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本申请一些实施例提供的储能装置的轴测图；
图2为图1所示的储能装置的结构示意图；
图3为图2所示的储能装置的A-A剖视图；
图4为图2所示的箱体的结构示意图；
图5为本申请一些实施例提的电池单体的爆炸图；
图6为本申请另一些实施例提供的电池单体的爆炸图；
图7为本申请一些实施例提供的储能装置的结构示意图；
图8为图7所示的储能装置的B-B剖视图；
图9为本申请一些实施例提供电池的爆炸图；
图10为本申请又一些实施例提供的储能装置的结构示意图；
图11为图10所示的储能装置的C-C剖视图；
图12为本申请一些实施例提供的储能装置的剖视图；
图13为本申请再一些实施例提供的储能装置的结构视图；
图14为图13所示的箱体的结构示意图；
图15为图13所示的储能装置的D-D剖视图；
图16为本申请一些实施例提供的电池的结构示意图；
图17为图16所示的电池的E-E剖视图；
图18为本申请一些实施例提供的电池单体的轴测图；
图19为图18所示的电池单体的爆炸图；
图20为图18所示的电池单体沿UW平面剖切的剖视爆炸图；
图21为图18所示的电池单体沿VW平面剖切的剖视爆炸图；
图22为本申请另一些实施例提供的电池单体的轴测图；
图23为图22所示的电池单体的爆炸图；
图24为图22所示的电池单体沿UW平面剖切的剖视爆炸图；
图25为图22所示的电池单体沿VW平面剖切的剖视爆炸图。
图标：1-箱体；11-电池仓；111-子仓；112-分隔件；113-支撑件；13-热管理仓；15-主控仓；2-电池；21-电池单体；211-外壳；2111-壳体；2112-端盖；2112a-端盖的外表面；2112b-凸包；2113-第一壁；2114-第二壁；2115-第三壁；2116-第四壁；2117-第五壁；2118-第六壁；212-电极端子；213-电极组件；2131-极耳；214-第一绝缘件；215-第二绝缘件；216-第三绝缘件；217-第四绝缘件；22-电池箱；221-第一部分；222-第二部分；23-汇流部件；10-储能装置；U-第一方向；V-第二方向；W-第三方向；X-箱体的长度方向；Y-箱体的宽度方向；Z-箱体的高度方向。
具体实施方式
为使本申请实施例的目的、技术方案和优点更加清楚，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚地描述，显然，所描述的实施例是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
除非另有定义，本申请所使用的所有的技术和科学术语与属于本申请的技术领域的技术人员通常理解的含义相同；本申请中在申请的说明书中所使用的术语只是为了描述具体的实施例的目的，不是旨在于限制本申请；本申请的说明书和权利要求书及上述附图说明中的术语“包括”和“具有”以及它们的任何变形，意图在于覆盖不排他的包含。本申请的说明书和权利要求书或上述附图中的术语“第一”、“第二”等是用于区别不同对象，而不是用于描述特定顺序或主次关系。
在本申请中提及“实施例”意味着，结合实施例描述的特定特征、结构或特性可以包含在本申请的至少一个实施例中。在说明书中的各个位置出现该短语并不一定均是指相同的实施例，也不是与其它实施例互斥的独立的或备选的实施例。
在本申请的描述中，需要说明的是，除非另有明确的规定和限定，术语“安装”、“相连”、“连接”、“附接”应做广义理解，例如，可以是固定连接，也可以是可拆卸连接，或一体地连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
本申请中术语“和/或”，仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本申请中字符“/”，一般表示前后关联对象是一种“或”的关系。
在本申请的实施例中，相同的附图标记表示相同的部件，并且为了简洁，在不同实施例中，省略对相同部件的详细说明。应理解，附图示出的本申请实施例中的各种部件的厚度、长宽等尺寸，以及集成装置的整体厚度、长宽等尺寸仅为示例性说明，而不应对本申请构成任何限定。
本申请中出现的“多个”指的是两个以上(包括两个)。
本申请实施例中，电池单体可以为二次电池，二次电池是指在电池单体放电后可通过充电的方式使活性材料激活而继续使用的电池单体。
电池单体包括但不限于锂离子电池、钠离子电池、钠锂离子电池、锂金属电池、钠金属电池、锂硫电池、镁离子电池、镍氢电池、镍镉电池、铅蓄电池等。
电池单体一般包括电极组件。电极组件包括正极、负极以及隔离件。在电池单体充放电过程中，活性离子(例如锂离子)在正极和负极之间往返嵌入和脱出。隔离件设置在正极和负极之间，可以起到降低正负极短路的风险，同时可以使活性离子通过。
在一些实施例中，正极可以为正极片，正极片可以包括正极集流体以及设置在正极集流体至少一个表面的正极活性材料。
作为示例，正极集流体具有在其自身厚度方向相对的两个表面，正极活性材料设置在正极集流体相对的两个表面的任意一者或两者上。
作为示例，正极集流体可采用金属箔片或复合集流体。例如，作为金属箔片，可采用表面镀银处理的铝、表面镀银处理的不锈钢、不锈钢、铜、铝、镍、炭精电极、碳、镍或钛等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铝、铝合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
作为示例，正极活性材料可包括以下材料中的至少一种：含锂磷酸盐、锂过渡金属氧化物及其各自的改性化合物。但本申请并不限定于这些材料，还可以使用其他可被用作电池正极活性材料的传统材料。这些正极活性材料可以仅单独使用一种，也可以将两种以上组合使用。
在一些实施例中，负极可以为负极片，负极片可以包括负极集流体。
作为示例，负极集流体可采用金属箔片、泡沫金属或复合集流体。例如，作为金属箔片，可以采用银表面处理的铝或不锈钢、不锈钢、铜、铝、镍、炭精电极、用碳、镍或钛等。泡沫金属可以为泡沫镍、泡沫铜、泡沫铝、泡沫合金、或泡沫碳等。复合集流体可包括高分子材料基层和金属层。复合集流体可通过将金属材料(铜、铜 合金、镍、镍合金、钛、钛合金、银及银合金等)形成在高分子材料基材(如聚丙烯、聚对苯二甲酸乙二醇酯、聚对苯二甲酸丁二醇酯、聚苯乙烯、聚乙烯等的基材)上而形成。
作为示例，负极片可以包括负极集流体以及设置在负极集流体至少一个表面上的负极活性材料。
作为示例，负极集流体具有在其自身厚度方向相对的两个表面，负极活性材料设置在负极集流体相对的两个表面中的任意一者或两者上。
作为示例，负极活性材料可采用本领域公知的用于电池单体的负极活性材料。作为示例，负极活性材料可包括以下材料中的至少一种：人造石墨、天然石墨、软炭、硬炭、硅基材料、锡基材料和钛酸锂等。硅基材料可选自单质硅、硅氧化合物、硅碳复合物、硅氮复合物以及硅合金中的至少一种。锡基材料可选自单质锡、锡氧化合物以及锡合金中的至少一种。但本申请并不限定于这些材料，还可以使用其他可被用作电池负极活性材料的传统材料。这些负极活性材料可以仅单独使用一种，也可以将两种以上组合使用。
在一些实施例中，正极集流体的材料可以为铝，负极集流体的材料可以为铜。
在一些实施方式中，电极组件为卷绕结构。
在一些实施方式中，电极组件为叠片结构。
储能装置是一种在箱体内集成多个电池单体的装置，多个电池单体串联、并联或混联，以储存电能。储能装置可以用于电力系统中，在用电谷期富余电能储存起来，以补充用电峰期用电。
对于一般的储能装置而言，箱体内设置有多个电池，电池包括电池箱和容纳于电池箱内的多个电池单体。所有电池在箱体的电池仓内的空间利用率不高；和/或，电池中的所有电池单体在电池箱内的空间利用率也不高，这样，导致储能装置中的所有电池单体在电池仓内的空间利用率较低，储能装置的体积能量密度较低。
鉴于此，本申请实施例提供一种储能装置，将电池仓内的所有电池单体的外壳的体积之和与电池仓的体积的比值设置在0.4～0.95范围内，使得所有电池单体的外壳在电池仓内的体积占比较大，从而提高了对电池仓的空间利用率，有利于提高储能装置的体积能量密度。
以下结合附图对本申请实施例提供的储能装置的具体结构进行详细描述。
请参照图1-图4，图1为本申请一些实施例提供的储能装置10的轴测图；图2为图1所示的储能装置10的结构示意图；图3为图2所示的储能装置10的A-A剖视图；图4为图2所示的箱体1的结构示意图。本申请实施例提供一种储能装置10，包括箱体1和多个电池单体21，箱体1具有电池仓11，多个电池单体21容纳于电池仓11内，电池单体21包括外壳211和电极端子212，电极端子212设置于外壳211。其中，电池仓11的体积为V1，多个电池单体21的外壳211的体积之和为V2，0.4≤V2/V1≤0.95。
箱体1可以是满足国际标准化组织ISO制定的国际标准的标准件，也可以是非标件。箱体1亦可称之为集装箱，储能装置10亦可称之为储能集装箱。箱体1可以是多种形状，比如、圆柱体状、棱柱体状。棱柱体可以是三棱柱、四棱柱、五棱柱、六棱柱等。作为示例，在图1-图4中，箱体1为四棱柱状，具体地，箱体1为长方体状。
电池仓11为箱体1内部用于容纳电池单体21的空间，电池仓11可以仅容纳电池单体21，也可以容纳除了电池单体21以外的其他部件，比如，消防部件、热管理部件、分隔件等。消防部件可以包括管道、探测器等。热管理部件可以是水冷板。分隔件可以是板、梁等，在电池仓11内设置分隔件后，可以将电池仓11分隔为多个空间，每个空间用于容纳电池单体21。电池仓11可以是多种形状，比如，圆柱体状、棱柱体状等。作为示例，在图1-图4中，电池仓11为四棱柱状，具体地，电池仓11为长方体状。以电池仓11为长方体状为例，沿箱体的宽度方向Y，电池仓11的至少一侧形成有开口，电池单体21可以通过开口进入到电池仓11内。在电池仓11的开口侧可以对应设置门扇，门扇可以与箱体1滑动连接、铰链连接等，以通过滑动或转动的方式打开或关闭电池仓11的开口。
电池仓11的体积可以通过多种方式测量。对于规则形状的电池仓11而言，以电池仓11为长方体状为例，可以通过测量工具分别测出电池仓11的长度、宽度和高度，并通过测量得到的电池仓11的长度、宽度和高度计算得出电池仓11的体积V1，可理解的是，电池仓11的长度、宽度和高度三者的乘积即为V1，其中，测量工具可以选用量尺。需要说明的是，若电池仓11的各个仓壁面为平面，则以各个仓壁面为基准测量出电池仓11的长度、宽度和高度；若电池仓11的某一个仓壁面形成有凸起或凹部，则以该仓壁面的平面区域为基准测量出电池仓11的长度、宽度和高度。对于非规则形状的电池仓11而言，很难通过测量电池仓11的外形尺寸来计算得出电池仓11的体积，可以采用填充法对电池仓11的体积进行测量。具体方法如下：向电池仓11内填满塑料粒，塑料粒的材质可以是PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)，粒径为0.5mm-1.5mm，密度为0.94g/cm3-0.96g/cm3；通过量具容器测量电池仓11内的塑料粒的总体积，从而得出电池仓11的体积V1。当然，在测量塑料粒的总体积时，也可以通过称重装置测量出电池仓11内的塑料粒的总重量，并计算得出电池仓11内的塑料粒的总质量，再根据塑料粒的总体积＝塑料粒的总质量/塑料粒的密度，计算得出塑料粒的总体积，从而得出电池仓11的体积V1。
箱体1内可以只形成电池仓11，箱体1内也可以除了电池仓11以外，还形成有用于容纳其他部件的空间。作为示例，箱体1还可以包括热管理仓13和主控仓15。热管理仓13可以容纳水冷机组，水冷机组用于为热管理部件提供流体介质，主控仓15可以用于容纳主控单元，主控单元用于电池仓11内的多个电池单体21的高压控制和通讯。其中，箱体1为长方体状，电池仓11和主控仓15沿箱体的高度方向Z排布，热管理仓13可以位于电池仓11沿箱体的长度方向X的一侧，沿箱体的高度方向Z，主控仓15可以位于电池仓11的底部。在其他实施例中，箱体1还可以包括电气仓，电气仓可以用于容纳汇流单元、配电单元和控制单元。汇流单元用于实现多个电池单体21汇流，实现多个电池单体21与储能变流器(PCS，Power Conversion System)的直流侧的安全连接。配电单元可以从电网取电，用于为内部控制系统和辅助系统供电；控制单元可以包括电池单体管理单元、消防控制单元 等，用于对储能装置内部进行检测和管理。电气仓和热管理仓13整体可以位于电池仓11沿箱体的长度方向X的一侧，电气仓和热管理仓13沿箱体的宽度方向Y排布。
作为示例，箱体1可以包括框架和多个侧板，框架可以由多个梁连接形成。沿箱体的长度方向X，框架的两侧分别设置有两个侧板；沿箱体的高度方向Z，框架的两侧分别设置有两个侧板；沿箱体的宽度方向Y，框架的一侧设置有侧板，另一侧用于安装门扇。框架和五个侧板共同限定出箱体1的内部空间，在该空间内设置多个梁体或板体，则可将该空间分为电池仓11、热管理仓13、主控仓15和电气仓。
在本申请实施例中，箱体的高度方向Z平行于箱体1的重力方向，箱体的高度方向Z、箱体的宽度方向Y和箱体的长度方向X两两垂直，箱体1的长度大于或等于箱体1的宽度。
电池仓11内的多个电池单体21之间可以串联或并联或混联，混联是指多个电池单体21中既有串联又有并联。多个电池单体21可以直接容纳在电池仓11内，也可以将多个电池单体21形成电池2，再将一个或多个电池2容纳在电池仓11内。以电池仓11内容纳有多个电池2为例，可以将多个电池单体21装入在电池箱内形成电池2，再将多个电池2装入电池仓11内，多个电池2之间可以串联或并联或混联。
电池单体21为储能装置10中的最小储能单元，电池单体21可以为圆柱电池单体、棱柱电池单体、软包电池单体或其他形状的电池单体，棱柱电池单体包括方壳电池单体、刀片形电池单体、多棱柱电池单体等，多棱柱电池单体例如为五棱柱电池单体、六棱柱电池单体等。
请参照图5，图5为本申请一些实施例提的电池单体21的爆炸图。电池单体21还包括电极组件213，电极组件213容纳于外壳211内，电极端子212设置于外壳211，电极端子212与电极组件213电连接。
外壳211为用于容纳电极组件213及电解质等的部件。外壳211可以是圆柱状，也可以是棱柱状。棱柱包括三棱柱、四棱柱、五棱柱或六棱柱等。四棱柱包括斜四棱柱、直平行六面体等。直平行六面体包括长方体、正方体等。作为示例，外壳211可以包括壳体2111和端盖2112。
壳体2111可以是一端形成开口的空心结构，壳体2111也可以是相对的两端形成开口的空心结构。壳体2111可以是多种形状，比如，圆柱状、棱柱状等。壳体2111的材质可以是多种，比如，铜、铁、铝、钢、铝合金、塑料等。
端盖2112是封闭壳体2111的开口以将电池单体21的内部环境与外部环境隔绝的部件。端盖2112与壳体2111共同限定出用于容纳电极组件213、电解质以及其他部件的收容空间。端盖2112的形状可以与外壳211的形状相适配，比如，壳体2111为长方体状，端盖2112为与外壳211相适配的矩形板状结构，再如，壳体2111为圆柱状，端盖2112为与壳体2111相适配的圆形板状结构。端盖2112的材质也可以是多种，比如，铜、铁、铝、钢、铝合金、塑料等，端盖2112与壳体2111的材质可以相同，也可以不同。
在壳体2111为一端形成开口的实施例中，端盖2112可以对应设置一个。在壳体2111为相对的两端形成开口的实施例中，端盖2112可以对应设置两个，两个端盖2112分别封闭壳体2111的两个开口，两个端盖2112与壳体2111共同限定出收容空间。
电极端子212为电池单体21中用于输入或输出电能的部件。电极端子212设置外壳211上，电极端子212用于与电极组件213的极耳2131电连接。电极端子212可以设置于外壳211的壳体2111上，也可以设置于外壳211的端盖2112上。电极端子212与极耳2131可以直接连接，比如，电极端子212与极耳2131直接焊接；电极端子212与极耳2131也可以通过集流构件间接连接，集流构件可以是金属导体，比如，铜、铁、铝、钢、铝合金等。
作为示例，如图5所示，壳体2111为一端形成开口的空心结构，外壳211中仅一个端盖2112，端盖2112封闭壳体2111的开口，端盖2112上设有两个电极端子212，电极端子212部分凸出于端盖的外表面2112a，电极组件213面向端盖2112的一端形成有正极耳和负极耳，正极耳和负极耳分别与两个电极端子212电连接。
以电池单体21的外壳211为长方体状，且电池仓11为长方体状为例，外壳211具有长度方向、宽度方向和高度方向，外壳211的长度大于或等于外壳211的宽度，电极端子212位于外壳211在高度方向的一端。多个电池单体21容纳于电池仓11内后，可以是外壳211的长度方向、宽度方向和高度方向三者中的一者平行于箱体的长度方向X，另一者平行于箱体的宽度方向Y，再一者平行于箱体的高度方向Z。
电池仓11内的所有电池单体21的外壳211的体积可以相等，比如，电池仓11内的所有电池单体21为同一规格的电池单体21，即所有电池单体21的长度、宽度、高度均相同；电池仓11内的所有电池单体21的外壳211的体积也可以至少两个不等，比如，电池仓11内的所有电池单体21由多种规格的电池单体21组成。V2为电池仓11内的所有电池单体21的外壳211的体积之和，若所有电池单体21的外壳211的体积相等，则可以测出一个电池单体21的外壳211的体积，再用该电池单体21的外壳211的体积乘以电池仓11内的电池单体21的个数得出V2。若电池仓11内的至少两个电池单体21的外壳211的体积不等，比如，电池仓11内所有电池单体21的外壳211由两种不同体积的外壳211组成，可以先测量第一种电池单体21的外壳211的体积，并将该第一种电池单体21的外壳211的体积乘以电池仓11内的第一种电池单体21的个数得出第一总体积，再测量第二种电池单体21的外壳211的体积，并将该第二种电池单体21的外壳211的体积乘以电池仓11内的第二种电池单体21的个数得出第二总体积，第一总体积和第二总体积之和为V2。
电池单体21的外壳211的体积可以通过多种方式测量，对于规则形状的外壳211而言，以外壳211为长方体状为例，可以通过测量工具分别测出外壳211的长度、宽度和高度，并通过测量得到的外壳211的长度、宽度和高度计算得出外壳211的体积，可以理解的是，外壳211的长度、宽度和高度三者的乘积即为外壳211的体积，其中，测量工具可以选用游标卡尺。对于非规则形状的外壳211而言，很难通过测量外壳211的外形尺寸来计算得出外壳211的体积，可以采用浸液法对外壳211的体积进行测量。具体方法如下：在测量容器中注入液体，并记录液体的液面对应的体积值X1，将电池单体21逐渐浸入液体中，直到端盖的外表面2112a与液面平齐，此时，端盖 2112上的电极端子212并未浸入液体中，记录此时液体的液面对应的体积值X2，X2-X1则为电池单体21的外壳211的体积。
需要说明的是，请参照图6，图6为本申请另一些实施例提供的电池单体21的爆炸图。端盖2112上形成有凸出于端盖的外表面2112a的凸包2112b，电池单体21的外壳211的体积并不包含凸包2112b的体积。以电池单体21的外壳211为长方体状为例，在测量外壳211的高度时，外壳211背离端盖2112的壁的外表面与端盖的外表面2112a之间的距离即为外壳211的高度，凸包2112b的高度并不包含在外壳211的高度中。
在本实施例中，V2/V1可以是0.4、0.43、0.5、0.55、0.57、0.62、0.67、0.71、0.75、0.81、0.85、0.92、0.95等中任意一者的点值或任意两者之间的范围值。
在本申请实施例中，V2/V1≤0.95，使得所有电池单体21在电池仓11内的体积占比不至于过大，降低了储能装置10的组装精度要求，能够有效将储能装置10的制造成本控制在合理范围内。V2/V1≥0.4，使得所有电池单体21在电池仓11内的体积占比较大，从而提高了对电池仓11的空间利用率，有利于提高储能装置10的体积能量密度。
以下通过具体实验数据进行具体说明：
在实验中，箱体1选用长方体箱体1，箱体1的长宽高分别为6.058m、2.438m和2.896m。电池仓11为长方体状，电池单体21选用方壳电池单体，电池仓11内的所有电池单体21的规格相同且属于同一化学体系，电池单体21的正极材料包括磷酸铁锂。具体实现数据参见表1：
表1
根据上述表1，对比实施例1-12和对比例1-2可知，当V2/V1≥0.4时，能够有效提高储能装置10的体积能量密度。
在一些实施例中，0.5≤V2/V1≤0.85。
在本实施例中，V2/V1可以是0.5、0.53、0.55、0.57、0.59、0.62、0.65、0.67、0.69、0.71、0.73、0.75、0.77、0.79、0.81、0.83、0.84、0.85等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.5≤V2/V1≤0.85，兼顾了储能装置10的体积能量密度和经济性要求，有利于进一步降低了储能装置10的制造成本，以及提高储能装置10的体积能量密度。
在一些实施例中，0.52≤V2/V1≤0.75。
在本实施例中，V2/V1可以是0.52、0.53、0.54、0.55、0.56、0.57、0.58、0.59、0.6、0.61、0.62、0.63、0.64、0.65、0.66、0.67、0.68、0.69、0.7、0.71、0.72、0.73、0.74、0.75等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.52≤V2/V1≤0.75，既能够将储能装置10的制造成本控制在相对较低的水平，又能够将储能装置10体积能量密度控制在相对较高的水平。
在一些实施例中，每个电池单体21的壳体2111的体积均为V3，电池仓11内的电池单体21的个数为N1，满足：V2＝V3*N1。
作为示例，电池单体21的壳体2111为长方体状，所有电池单体21的壳体2111的长度相等，所有电池单体21的壳体2111的宽度相等，所有电池单体21的壳体2111的高度相等，使得所有电池单体21的外壳211的体积相等。
其中，N1为大于等于2的正整数。作为示例，2000≤N1≤5000。
在本实施例中，V2＝V3*N1，使得电池仓11中的所有电池单体21的外壳211的体积相等，可以选用同一规格的电池单体21。一方面，有利于提高储能装置10的组装效率；另一方面，能够降低因电池仓11内的电池单体21的规格不同而造成空间浪费的概率。
在一些实施例中，0.0001≤V3/V1≤0.00025。
V3/V1可以是0.0001、0.00012、0.00015、0.00017、0.00019、0.0002、0.00021、0.00023、0.00025等中任意一者的点值或任意两者之间的范围值。
在电池仓11中，若电池单体21的数量过多，电池单体21的外壳211以及外壳211内部的绝缘件所占用的空间就越大，电池仓11的有效空间减小。而在本实施例中，V3/V1≥0.0001，使得电池单体21的外壳211在电池仓11内的体积占比较大，在电池仓11的体积一定的情况下，能够减小电池单体21的数量，降低因电池单体21数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置10的体积能量密度；V3/V1≤0.00025，使得电池单体21的外壳211在电池仓11内的体积占比不至于过大，降低电池单体21的制造难度和制造成本。
在一些实施例中，0.00015≤V3/V1≤0.0002。
在本实施例中，V3/V1可以是0.00015、0.00016、0.00017、0.00018、0.00019、0.0002等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.00015≤V3/V1≤0.0002，兼顾了储能装置10的体积能量密度、电池单体21制造难易程度以及电池单体21经济性要求，有利于提高储能装置10的体积能量密度，以及降低电池单体21的制造难度和制造成本。
在一些实施例中，0.0026m3≤V3≤0.008m3。
在本实施例中，V3可以是0.0026m3、0.0028m3、0.0031m3、0.0035m3、0.0038m3、0.004m3、0.0042m3、0.0045m3、0.0048m3、0.005m3、0.0052m3、0.0055m3、0.0058m3、0.006m3、0.0062m3、0.0065m3、0.0068m3、0.007m3、0.0072m3、0.0073m3、0.0075m3、0.0078m3、0.008m3、等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.0026m3≤V3≤0.008m3，电池单体21的外壳211的体积较大，使得电池仓11内的电池单体21的数量不至于过多，当然，电池单体21的外壳211的体积也不至于过大，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，0.004m3≤V3≤0.006m3。
在本实施例中，V3可以是0.004m3、0.0041m3、0.0042m3、0.0043m3、0.0044m3、0.0045m3、0.0046m3、0.0047m3、0.0048m3、0.0049m3、0.005m3、0.0051m3、0.0052m3、0.0053m3、0.0054m3、0.0055m3、0.0056m3、0.0057m3、0.0058m3、0.0059m3、0.006m3等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.004m3≤V3≤0.006m3，既能够将储能装置10的体积能量密度控制在相对较高水平，又能够将电池单体21的制造成本控制在较低水平。
在一些实施例中，箱体1的体积为V，满足：0.45≤V1/V≤0.75。
V1/V可以是0.45、0.48、0.5、0.52、0.55、0.58、0.6、0.62、0.65、0.68、0.7、0.73、0.75等中任意一者的点值或任意两者之间的范围值。
以箱体1为长方体状为例，可以通过测量工具分别测出箱体1的长度、宽度和高度，并通过测量得到的箱体1的长度、宽度和高度计算得出箱体1的体积，可以理解的是，箱体1的长度、宽度和高度三者的乘积即为箱体1的体积V。其中，测量工具可以选用量尺。需要说明的是，若箱体1的各个箱壁的外表面为平面，则以各个箱壁的外表面为基准测量出箱体1的长度、宽度和高度；若箱体1的某一个箱壁的外表面形成有凸起或凹部，则以该箱壁的外表面的平面区域为基准测量出箱体1的长度、宽度和高度。
在本实施例中，V1/V≥0.45，使得电池仓11的体积在箱体1的体积中的占比较大，增大箱体1内可利用的有效空间，有利于提高储能装置10的体积能量密度。V1/V≤0.75，使得电池仓11的体积不至于过大，储能装置10能够为其他部件预留更多的安装空间，降低其他部件的安装难度。其他部件可以是主控单元、水冷机组等。
在一些实施例中，0.55≤V1/V≤0.65。
在本实施例中，V1/V可以是0.55、0.56、0.67、0.58、0.59、0.6、0.61、0.62、0.63、0.64、0.65等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.55≤V1/V≤0.65，能够兼顾储能装置10的体积能量密度和储能装置10的其他部件的安装便捷性要求。
在一些实施例中，20m3≤V≤80m3。
在本实施例中，V可以是20m3、25m3、30m3、35m3、40m3、45m3、50m3、55m3、60m3、65m3、70m3、75m3、80m3 等中任意一者的点值或任意两者之间的范围值。
在本实施例中，V≥20m3，使得箱体1的体积较大，有利于实现储能装置10的大能量要求，以储存更多的电能；V≤80m3，使得箱体1的体积不至于过大，便于储能装置10的搬运、运输。
在一些实施例中，35m3≤V≤50m3。
在本实施例中，V可以是35m3、36m3、37m3、38m3、39m3、40m3、41m3、42m3、43m3、44m3、45m3、46m3、47m3、48m3、49m3、50m3等中任意一者的点值或任意两者之间的范围值。
在本实施例中，35m3≤V≤50m3，能够进一步兼顾储能装置10的大能量和储能装置10搬运、运输的便捷性要求。
在一些实施例中，请继续参照图2，电池仓11内容纳有沿箱体的长度方向X排布的多个电池单体21。沿箱体的长度方向X，电池仓11的尺寸为L1，电池仓11内排布的多个电池单体21的外壳211的尺寸之和为L2，满足：0.6≤L2/L1≤0.95。
电池仓11沿箱体的长度方向X的尺寸可以是电池仓11的长度，电池仓11沿箱体的长度方向X的尺寸可以选用量尺测得。作为示例，电池单体21的外壳211的长度方向平行于箱体的长度方向X，电池仓11内沿箱体的长度方向X排布的多个电池单体21的外壳211的尺寸之和即为多个电池单体21的外壳211的长度之和，电池单体21沿箱体的长度方向X的尺寸可以通过游标卡尺测得。在沿箱体的长度方向X排布的多个电池单体21中，相邻的两个电池单体21之间可以直接接触，也可以设置中间件，比如，热管理部件、隔热件等。
需要说明的是，在本实施例中，电池仓11内沿箱体的长度方向X排布的所有电池单体21的外壳211的尺寸可以全部相等，也可以是至少两个电池单体21的尺寸不等。
在本实施例中，L2/L1可以是0.6、0.65、0.7、0.75、0.8、0.85、0.9、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L2/L1≥0.6，使得沿箱体的长度方向X排布的多个电池单体21的外壳211在电池仓11内沿箱体的长度方向X的尺寸占比较大，在箱体的长度方向X充分利用电池仓11的空间，减小相邻的两个电池单体21的外壳211在箱体的长度方向X上的间隙，有利于提高所有电池单体21的外壳211在电池仓11中的体积占比，有利于提高储能装置10的体积能量密度。L2/L1≤0.95，使得电池仓11在箱体的长度方向X具有足够的安装多个电池单体21的安装余量，降低电池单体21的安装难度。
在一些实施例中，0.75≤L2/L1≤0.9。
在本实施例中，L2/L1可以是0.75、0.76、0.77、0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.75≤L2/L1≤0.9，兼顾了储能装置10的体积能量密度和电池单体21在箱体的长度方向X上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池单体21在箱体的长度方向X上的安装难度。
在一些实施例中，沿箱体的长度方向X，每个电池单体21的外壳211的尺寸均为L3，电池仓11内排布有N2个电池单体21，满足：L2＝L3*N2。
其中，N2为大于等于2的正整数。
在本实施例中，L2＝L3*N2，使得多个电池单体21的外壳211沿箱体的长度方向X的尺寸相等，能够有效降低因电池单体21的外壳211沿箱体的长度方向X的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体21沿箱体的长度方向X排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，0.03≤L3/L1≤0.12。
L3/L1可以是0.03、0.04、0.05、0.06、0.07、0.08、0.09、0.1、0.11、0.12等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L3/L1≥0.03，使得电池单体21的外壳211在电池仓11内沿箱体的长度方向X的尺寸占比较大，在电池仓11在箱体的长度方向X的尺寸一定的情况下，能够减小电池仓11内沿箱体的长度方向X所容纳的电池单体21的个数，降低因电池单体21数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置10的体积能量密度。L3/L1≤0.12，使得电池单体21的外壳211在电池仓11内沿箱体的长度方向X的尺寸占比不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.055≤L3/L1≤0.09。
在本实施例中，L3/L1可以是0.055、0.06、0.065、0.07、0.075、0.08、0.085、0.09等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.055≤L3/L1≤0.09，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，0.17m≤L3≤0.6m。
在本实施例中，L3可以是0.17m、0.2m、0.25m、0.3m、0.35m、0.4m、0.45m、0.5m、0.55m、0.6m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L3≥0.17m，使得电池单体21的外壳211沿箱体的长度方向X的尺寸较大，有利于提高电池单体21的外壳211在电池仓11内沿箱体的长度方向X的尺寸的占比，有利于提高储能装置10的体积能量密度。L3≤0.6m，使得电池单体21的外壳211沿箱体的长度方向X的尺寸不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.2m≤L3≤0.45m。
在本实施例中，L3可以是0.2m、0.23m、0.25m、0.28m、0.3m、0.33m、0.35m、0.38m、0.4m、0.43m、 0.45m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，沿箱体的长度方向X，箱体1的尺寸为L，满足：0.65≤L1/L≤0.95。
箱体1沿长度方向的尺寸即为箱体1的长度，箱体1的长度可以选用量尺测得。
在本实施例中，L1/L可以是0.65、0.7、0.75、0.8、0.85、0.95等中任意一者的点值或任意两者之间的范围值。
L1/L≥0.65使得电池仓11在箱体1中沿箱体的长度方向X的尺寸占比较大，增大电池仓11沿箱体的长度方向X的尺寸，以为电池单体21提供更多的空间，有利于提高储能装置10的体积能量密度。L1/L≤0.95，使得箱体1在长度方向上未被电池仓11占用的部分的余量充足，使得箱体1具有足够的结构强度。
在一些实施例中，0.75≤L1/L≤0.9。
在本实施例中，L1/L可以是0.75、0.76、0.77、0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.75≤L1/L≤0.9，能够兼顾储能装置10的体积能量密度和箱体1的结构强度的要求，既有利于提高储能装置10的体积能量密度，又能够进一步提高箱体1的结构强度。
在一些实施例中，3m≤L≤9m。
在本实施例中，L可以是3m、3.5m、4m、4.5m、5m、5.5m、6m、6.5m、7m、7.5m、8m、8.5m、9m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L≥3m，使得箱体1沿长度方向的尺寸较大，可以将电池仓11沿箱体的长度方向X尺寸做大，有利于提高电池仓11在箱体1中沿箱体的长度方向X的尺寸占比，有利于提高储能装置10的体积能量密度。L≤9m，使得箱体1沿长度方向的尺寸不至于过大，便于储能装置10的搬运、运输。
在一些实施例中，5m≤L≤7m。
L可以是5m、5.1m、5.2m、5.3m、5.4m、5.5m、5.6m、5.7m、5.8m、5.9m、6m、6.1m、6.2m、6.3m、6.4m、6.5m、6.6m、6.7m、6.8m、6.9m、7m等中任意一者的点值或任意两者之间的范围值
在本实施例中，5m≤L≤7m，能够进一步兼顾储能装置10的体积能量密度和储能装置10搬运、运输的便捷性要求。
在一些实施例中，请继续参照3，电池仓11内容纳有沿箱体的宽度方向Y排布的多个电池单体21。沿箱体的宽度方向Y，电池仓11的尺寸为D1，电池仓11内排布的多个电池单体21的外壳211的尺寸之和为D2，满足：0.6≤D2/D1≤0.95。
电池仓11沿箱体的宽度方向Y的尺寸可以是电池仓11的宽度，电池仓11沿箱体的宽度方向Y的尺寸可以选用量尺测得。作为示例，电池单体21的外壳211的宽度方向平行于箱体的宽度方向Y，电池仓11内沿箱体的宽度方向Y排布的多个电池单体21的外壳211的尺寸之和即为多个电池单体21的外壳211的宽度之和，电池单体21沿箱体的宽度方向Y的尺寸可以通过游标卡尺测得。在沿箱体的宽度方向Y排布的多个电池单体21中，相邻的两个电池单体21之间可以直接接触，也可以设置中间件，比如，热管理部件、隔热件等。
需要说明的是，在本实施例中，电池仓11内沿箱体的宽度方向Y排布的所有电池单体21的外壳211的尺寸可以全部相等，也可以是至少两个电池单体21的尺寸不等。
在本实施例中，D2/D1可以是0.6、0.65、0.7、0.75、0.8、0.85、0.9、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中D2/D1≥0.6，使得沿箱体1宽度方向排布的多个电池单体21的外壳211在电池仓11内沿箱体的宽度方向Y的尺寸占比较大，在箱体的宽度方向Y充分利用电池仓11的空间，减小相邻的两个电池单体21的外壳211在箱体的宽度方向Y上的间隙，有利于提高所有电池单体21的外壳211在电池仓11中的体积占比，有利于提高储能装置10的体积能量密度。D2/D1≤0.95，使得电池仓11在箱体的宽度方向Y具有足够的安装多个电池单体21的安装余量，降低电池单体21的安装难度。
在一些实施例中，0.75≤D2/D1≤0.9。
在本实施例中，D2/D1可以是0.75、0.76、0.77、0.78、0.79、0.80、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.75≤D2/D1≤0.9，兼顾了储能装置10的体积能量密度和电池单体21在箱体的宽度方向Y上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池单体21在箱体的宽度方向Y上的安装难度。
在一些实施例中，沿箱体的宽度方向Y，每个电池单体21的外壳211的尺寸均为D3，电池仓11内排布有N3个电池单体21，满足：D2＝D3*N3。
其中，N3为大于等于2的正整数。
在本实施例中，D2＝D3*N3，使得多个电池单体21的外壳211沿箱体的宽度方向Y的尺寸相等，能够有效降低因电池单体21的外壳211沿箱体的宽度方向Y的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体21沿箱体的宽度方向Y排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，0.02≤D3/D1≤0.05。
D3/D1可以是0.02、0.025、0.03、0.035、0.04、0.045、0.05等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D3/D1≥0.02，使得电池单体21的外壳211在电池仓11内沿箱体的宽度方向Y的尺寸占比较大，在电池仓11在箱体的宽度方向Y的尺寸一定的情况下，能够减小电池仓11内沿箱体的宽度方向Y所容纳 的电池单体21的个数，降低因电池单体21数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置10的体积能量密度。D3/D1≤0.05，使得电池单体21的外壳211在电池仓11内沿箱体的宽度方向Y的尺寸占比不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.032≤D3/D1≤0.04。
D3/D1可以是0.032、0.033、0.034、0.035、0.036、0.037、0.038、0.039、0.04等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.032≤D3/D1≤0.04，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，0.04m≤D3≤0.12m。
D3可以是0.04m、0.05m、0.06m、0.07m、0.08m、0.09m、0.1m、0.11m、0.12m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D3≥0.04m，使得电池单体21的外壳211沿箱体的宽度方向Y的尺寸较大，有利于提高电池单体21的外壳211在电池仓11内沿箱体的宽度方向Y的尺寸的占比，有利于提高储能装置10的体积能量密度。D3≤0.12m，使得电池单体21的外壳211沿箱体的宽度方向Y的尺寸不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.06m≤D3≤0.08m。
在本实施例中，D3可以是0.06m、0.061m、0.062m、0.063m、0.064m、0.065m、0.066m、0.067m、0.068m、0.069m、0.07m、0.071m、0.07m、0.073m、0.074m、0.075m、0.076m、0.077m、0.078m、0.079m、0.08m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.06m≤D3≤0.08m，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，沿箱体的宽度方向Y，箱体1的尺寸为D，满足：0.65≤D1/D≤0.99。
箱体1沿宽度方向的尺寸即为箱体1的宽度，箱体1的宽度可以选用量尺测得。
在本实施例中，D1/D可以是0.65、0.7、0.75、0.8、0.85、0.9、0.95、0.99等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D1/D≥0.65使得电池仓11在箱体1中沿箱体的宽度方向Y的尺寸占比较大，增大电池仓11沿箱体的宽度方向Y的尺寸，以为电池单体21提供更多的空间，有利于提高储能装置10的体积能量密度。D1/D≤0.95，使得箱体1在宽度方向上未被电池仓11占用的部分的余量充足，使得箱体1具有足够的结构强度。
在一些实施例中，0.75≤D1/D≤0.92。
在本实施例中，D1/D可以是0.75、0.76、0.77、0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9、0.91、0.92等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.75≤D1/D≤0.92，能够兼顾储能装置10的体积能量密度和箱体1的结构强度的要求，既有利于提高储能装置10的体积能量密度，又能够进一步提高箱体1的结构强度。
在一些实施例中，1.5m≤D≤3.5m。
D可以是1.5m、1.8m、2m、2.3m、2.5m、2.8m、3m、3.2m、3.5m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D≥1.5m，使得箱体1沿宽度方向的尺寸较大，可以将电池仓11沿箱体的宽度方向Y尺寸做大，有利于提高电池仓11在箱体1中沿箱体的宽度方向Y的尺寸占比，有利于提高储能装置10的体积能量密度。L≤D≤3.5m，使得箱体1沿宽度方向的尺寸不至于过大，便于储能装置10的搬运、运输。
在一些实施例中，2m≤D≤3m。
在本实施例中，D可以是2m、2.1m、2.2m、2.3m、2.4m、2.5m、2.6m、2.7m、2.8m、2.9m、3m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，2m≤D≤3m，能够进一步兼顾储能装置10的体积能量密度和储能装置10搬运、运输的便捷性要求。
在一些实施例中，请继续参照图2和图3，电池仓11内容纳有沿箱体的高度方向Z排布的多个电池单体21。沿箱体的高度方向Z，电池仓11的尺寸为H1，电池仓11内排布的多个电池单体21的外壳211的尺寸之和为H2，满足：0.6≤H2/H1≤0.95。
电池仓11沿箱体的高度方向Z的尺寸可以是电池仓11的高度，电池仓11沿箱体的高度方向Z的尺寸可以选用量尺测得。作为示例，电池单体21的外壳211的高度方向平行于箱体的高度方向Z，电池仓11内沿箱体的高度方向Z排布的多个电池单体21的外壳211的尺寸之和即为多个电池单体21的外壳211的高度之和，电池单体21沿箱体的高度方向Z的尺寸可以通过游标卡尺测得。在沿箱体的高度方向Z排布的多个电池单体21中，相邻的两个电池单体21之间可以直接接触，也可以设置中间件，比如，热管理部件、隔热件等。
需要说明的是，在本实施例中，电池仓11内沿箱体的高度方向Z排布的所有电池单体21的外壳211的尺寸可以全部相等，也可以是至少两个电池单体21的尺寸不等。
在本实施例中，H2/H1可以是0.6、0.65、0.7、0.75、0.8、0.85、0.9、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H2/H1≥0.6，使得沿箱体1高度方向排布的多个电池单体21的外壳211在电池仓11内沿箱体的高度方向Z的尺寸占比较大，在箱体的高度方向Z充分利用电池仓11的空间，减小相邻的两个电池单体21的外壳211在箱体的高度方向Z上的间隙，有利于提高所有电池单体21的外壳211在电池仓11中的体积占比，有 利于提高储能装置10的体积能量密度。H2/H1≤0.95，使得电池仓11在箱体的高度方向Z具有足够的安装多个电池单体21的安装余量，降低电池单体21的安装难度。
在一些实施例中，0.7≤H2/H1≤0.9。
在本实施例中，H2/H1可以是0.7、0.71、0.72、0.73、0.74、0.75、0.76、0.77、0.78、0.79、0.80、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.7≤H2/H1≤0.9，兼顾了储能装置10的体积能量密度和电池单体21在箱体的高度方向Z上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池单体21在箱体的高度方向Z上的安装难度。
在一些实施例中，沿箱体的高度方向Z，每个电池单体21的外壳211的尺寸均为H3，电池仓11内排布有N4个电池单体21，满足：H2＝H3*N4。
其中，N4为大于等于2的正整数。
在本实施例中，D2＝D3*N3，使得多个电池单体21的外壳211沿箱体的高度方向Z的尺寸相等，能够有效降低因电池单体21的外壳211沿箱体的高度方向Z的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池单体21沿箱体的高度方向Z排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，0.07≤H3/H1≤0.12。
H3/H1可以是0.07、0.075、0.08、0.085、0.09、0.095、0.1、0.11、0.12等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H3/H1≥0.07，使得电池单体21的外壳211在电池仓11内沿箱体的高度方向Z的尺寸占比较大，在电池仓11在箱体的高度方向Z的尺寸一定的情况下，能够减小电池仓11内沿箱体的高度方向Z所容纳的电池单体21的个数，降低因电池单体21数量过多而造成可利用的有效空间减小的概率，有利于提高储能装置10的体积能量密度。H3/H1≤0.12，使得电池单体21的外壳211在电池仓11内沿箱体的高度方向Z的尺寸占比不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.08≤H3/H1≤0.1。
在本实施例中，H3/H1可以是0.08、0.081、0.082、0.083、0.084、0.085、0.086、0.087、0.088、0.088、0.089、0.09、0.091、0.092、0.093、0.094、0.095、0.096、0.097、0.098、0.099、0.1等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.08≤H3/H1≤0.1，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，0.17m≤H3≤0.6m。
H3可以是0.17m、0.2m、0.25m、0.3m、0.35m、0.4m、0.45m、0.5m、0.55m、0.6m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H3≥0.17m，使得电池单体21的外壳211沿箱体的高度方向Z的尺寸较大，有利于提高电池单体21的外壳211在电池仓11内沿箱体的高度方向Z的尺寸的占比，有利于提高储能装置10的体积能量密度。H3≤0.6m，使得电池单体21的外壳211沿箱体的高度方向Z的尺寸不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.2m≤H3≤0.45m。
在本实施例中，H3可以是0.2m、0.23m、0.25m、0.28m、0.3m、0.33m、0.35m、0.38m、0.4m、0.43m、0.45m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.2m≤H3≤0.45m，有利于进一步提高储能装置10的体积能量密度，降低电池单体21的制造成本。
在一些实施例中，沿箱体的高度方向Z，箱体1的尺寸为H，满足：0.55≤H1/H≤0.85。
箱体1沿高度方向的尺寸即为箱体1的高度，箱体1的高度可以选用量尺测得。
在本实施例中，H1/H可以是0.55、0.6、0.65、0.7、0.75、0.8、0.85等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H1/H≥0.55使得电池仓11在箱体1中沿箱体的高度方向Z的尺寸占比较大，增大电池仓11沿箱体的高度方向Z的尺寸，以为电池单体21提供更多的空间，有利于提高储能装置10的体积能量密度。H1/H≤0.85，使得箱体1在高度方向上未被电池仓11占用的部分的余量充足，使得箱体1具有足够的结构强度。
在一些实施例中，0.65≤H1/H≤0.78。
在本实施例中，H1/H可以是0.65、0.66、0.67、0.68、0.69、0.7、0.71、0.72、0.73、0.74、0.75、0.76、0.77、0.78等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.65≤H1/H≤0.78，能够兼顾储能装置10的体积能量密度和箱体1的结构强度的要求，既有利于提高储能装置10的体积能量密度，又能够进一步提高箱体1的结构强度。
在一些实施例中，1.5m≤H≤3.5m。
H可以是1.5m、1.8m、2m、2.3m、2.5m、2.8m、3m、3.2m、3.5m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H≥1.5m，使得箱体1沿高度方向的尺寸较大，可以将电池仓11沿箱体的高度方向Z尺寸做大，有利于提高电池仓11在箱体1中沿箱体的高度方向Z的尺寸占比，有利于提高储能装置10的体积能量密度。H≤3.5m，使得箱体1沿高度方向的尺寸不至于过大，便于储能装置10的搬运、运输。
在一些实施例中，2m≤H≤3m。
在本实施例中，H可以是2m、2.1m、2.2m、2.3m、2.4m、2.5m、2.6m、2.7m、2.8m、2.9m、3m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，2m≤H≤3m，能够进一步兼顾储能装置10的体积能量密度和储能装置10搬运、运输的便捷性要求。
在一些实施例中，请参照图7-图9，图7为本申请一些实施例提供的储能装置10的结构示意图；图8为图7所示的储能装置10的B-B剖视图；图9为本申请一些实施例提供电池2的爆炸图。电池仓11内容纳有至少一个电池2，电池2包括多个电池单体21。
电池仓11内的电池2可以是一个，也可以是多个。作为示例，箱体1和电池2均为长方体状。电池2容纳于电池仓11内后，可以是电池2的长度方向、宽度方向和高度方向中的一者与箱体的长度方向X平行，另一者与箱体的宽度方向Y平行，再一者与箱体的高度方向Z平行。在图7-图9中，电池2的长度方向与箱体的宽度方向Y平行，电池2的宽度方向与箱体的长度方向X平行，电池2的高度方向与箱体的高度方向Z平行。
沿箱体的长度方向X，电池仓11可以容纳一个电池2，也可以容纳多个电池2；沿箱体的宽度方向Y，电池仓11可以容纳一个电池2，也可以容纳多个电池2；沿箱体的高度方向Z，电池仓11可以容纳一个电池2，也可以容纳多个电池2。
在一些实施例中，电池2可以是电池模块，可以是多个电池单体21排列并固定形成一个电池模块。在电池模块中，可以通过两个侧板和两个端板形成框体，多个电池单体21固定在框体内，以形成电池模块。
在另一些实施例中，如图9所示，电池2可以是电池包，电池2还包括电池箱22，多个电池单体21容纳于电池箱22内。电池箱22可以包括第一部分221和第二部分222，第一部分221与第二部分222相互盖合，以限定出用于容纳电池单体21的容纳空间。第一部分221和第二部分222可以是多种形状，比如，长方体状、圆柱体状等。第一部分221可以是一侧开放的空心结构，第二部分222也可以是一侧开放的空心结构，第二部分222的开放侧盖合于第一部分221的开放侧，则形成具有容纳空间的电池箱22。也可以是第一部分221为一侧开放的空心结构，第二部分222为板状结构，第二部分222盖合于第一部分221的开放侧，则形成具有容纳空间的电池箱22。第一部分221与第二部分222可以通过密封元件来实现密封，密封元件可以是密封圈、密封胶等。
在组装时，可以先将多个电池单体21组装成电池2，再将电池2安装于于电池仓11内，由多个电池单体21组成的电池2体积更大，更容易安装在电池仓11内，组装效率高。
在一些实施例中，请继续参照图7，电池仓11内容纳有沿箱体的长度方向X排布的多个电池2。沿箱体的长度方向X，电池仓11的尺寸为L1，电池仓11内排布的多个电池2的尺寸之和为L4，满足：0.7≤L4/L1≤0.96。
作为示例，电池2的宽度方向平行于箱体的长度方向X，电池仓11内沿箱体的长度方向X排布的多个电池2的尺寸之和即为多个电池2的宽度之和。电池2在箱体的长度方向X的尺寸可以通过量尺测得。
需要说明的是，在本实施例中，电池仓11内沿箱体的长度方向X排布的多个电池2的尺寸可以全部相等，也可以是至少两个电池2的尺寸不等。
L4/L1可以是0.7、0.75、0.8、0.85、0.9、0.96等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.7≤L4/L1≤0.96，电池仓11内容纳有沿箱体的长度方向X排布的多个电池2，使得单个电池2沿箱体的长度方向X的尺寸不至于过大，降低电池2的制造难度和安装难度。L4/L1≥0.7，使得沿箱体的长度方向X排布的多个电池2在电池仓11内沿箱体的长度方向X的尺寸占比较大，在箱体的长度方向X充分利用电池仓11的空间，减小相邻的两个电池2在箱体的长度方向X上的间隙，有利于提高所有电池2在电池仓11中的体积占比，有利于提高储能装置10的体积能量密度。L4/L1≤0.96，使得电池仓11在箱体的长度方向X具有足够的安装多个电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.78≤L4/L1≤0.91。
在本实施例中，L4/L1可以是0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9、0.91等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.78≤L4/L1≤0.91，兼顾了储能装置10的体积能量密度和电池2在箱体的长度方向X上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的长度方向X上的安装难度。
在一些实施例中，请继续参照图7，沿箱体的长度方向X，每个电池2的尺寸为L5，电池仓11内排布有N5个电池2，满足：L4＝L5*N5。
其中，N5为大于等于2的正整数。
在本实施例中，L4＝L5*N5，使得多个电池2沿箱体的长度方向X的尺寸相等，能够有效降低因电池2沿箱体的长度方向X的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池2沿箱体的长度方向X排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，1m≤L5≤1.5m，2≤N5≤6。
L5可以是1m、1.05m、1.1m、1.15m、1.2m、1.25m、1.3m、1.35m、1.4m、1.45m、1.5m等中任意一者的点值或任意两者之间的范围值。N5的取值可以是2、3、4、5或6。
在本实施例中，1m≤L5≤1.5m，2≤N5≤6，沿箱体的长度方向X，每个电池2的尺寸较大，且电池2的数量不至于过多，可以减小电池2中除了电池单体21以外的其他部件(比如，电池箱22的箱壁)所占用的空间，有利于提高沿箱体的长度方向X排布的多个电池2在电池仓11内沿箱体的长度方向X的尺寸占比。
在一些实施例中，请参照图10，图10为本申请又一些实施例提供的储能装置10的结构示意图。沿箱体的长度方向X，电池仓11仅容纳一个电池2，电池仓11的尺寸为L1，电池2的尺寸为L5，满足：0.8≤L5/L1≤0.99。
作为示例，电池2的长度方向平行于箱体的长度方向X，电池2的宽度方向平行于箱体的宽度方向Y，电池2的高度方向平行于箱体的高度方向Z。电池2沿箱体的长度方向X的尺寸为电池2的长度。
L5/L1可以是0.8、0.83、0.85、0.88、0.9、0.93、0.95、0.97、0.99等中任意一者的点值或任意两者之间的范围值。
在本实施例中，电池仓11沿箱体的长度方向X仅容纳一个电池2，有利于提高对电池仓11沿箱体的长度方向X的空间的利用率。L5/L1≥0.8，使得电池2在电池仓11内沿箱体的长度方向X的尺寸占比较大，在箱体的长度方向X充分利用电池仓11的空间，有利于提高电池仓11内的所有电池2的体积占比，有利于提高储能装置10的体积能量密度。L5/L1≤0.99，使得电池仓11在箱体的长度方向X具有足够的安装电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.85≤L5/L1≤0.93。
在本实施例中，L5/L1可以是0.85、0.86、0.87、0.88、0.89、0.9、0.91、0.92、0.93等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.85≤L5/L1≤0.93，兼顾了储能装置10的体积能量密度和电池2在箱体的长度方向X上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的长度方向X上的安装难度。
在一些实施例中，4m≤L5≤8m。
L5可以是4m、4.5m、5m、5.5m、6m、6.5m、7m、7.5m、8m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L5≥4m，使得电池2沿箱体的长度方向X的尺寸较大，电池2中沿箱体的长度方向X可以排布更多地电池单体21，可以满足储能装置10的大能量要求；L5≤8m，使得电池2沿箱体的长度方向X的尺寸不至于过大，降低电池2的制造难度和安装难度。
在一些实施例中，5.5m≤L5≤6.8m。
在本实施例中，L5可以是5.5m、5.6m、5.7m、5.8m、5.9m、6m、6.1m、6.2m、6.3m、6.4m、6.5m、6.6m、6.7m、6.8m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，5.5m≤L5≤6.8m，兼顾了储能装置10的大能量和电池2的经济性、安装便捷性要求。
在一些实施例中，请参照图11，图11为图10所示的储能装置10的C-C剖视图。电池仓11内容纳有沿箱体的宽度方向Y排布的多个电池2。沿箱体的宽度方向Y，电池仓11的尺寸为D1，电池仓11内排布的多个电池2的尺寸之和为D4，满足：0.7≤D4/D1≤0.96。
作为示例，电池2的宽度方向平行于箱体的宽度方向Y，电池仓11内沿箱体的宽度方向Y排布的多个电池2的尺寸之和即为多个电池2的宽度之和。电池2在箱体的宽度方向Y的尺寸可以通过量尺测得。
需要说明的是，在本实施例中，电池仓11内沿箱体的宽度方向Y排布的多个电池2的尺寸可以全部相等，也可以是至少两个电池2的尺寸不等。
在本实施例中，沿箱体的长度方向X，电池仓11可以容纳一个电池2，也可以容纳多个电池2。
D4/D1可以是0.7、0.75、0.8、0.85、0.9、0.96等中任意一者的点值或任意两者之间的范围值。
在本实施例中，电池仓11内容纳有沿箱体的宽度方向Y排布的多个电池2，使得单个电池2沿箱体的宽度方向Y的尺寸不至于过大，降低电池2的制造难度和安装难度。D4/D1≥0.7，使得沿箱体的宽度方向Y排布的多个电池2在电池仓11内沿箱体的宽度方向Y的尺寸占比较大，在箱体的宽度方向Y充分利用电池仓11的空间，减小相邻的两个电池2在箱体的宽度方向Y上的间隙，有利于提高所有电池2在电池仓11中的体积占比，有利于提高储能装置10的体积能量密度。D4/D1≤0.96，使得电池仓11在箱体的宽度方向Y具有足够的安装多个电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.78≤D4/D1≤0.91。
在本实施例中，D4/D1可以是0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9、0.91等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.78≤D4/D1≤0.91，兼顾了储能装置10的体积能量密度和电池2在箱体的宽度方向Y上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的宽度方向Y上的安装难度。
在一些实施例中，沿箱体的宽度方向Y，每个电池2的尺寸为D5，电池仓11内排布有N6个电池2，满足：D4＝D5*N6。
其中，N6为大于等于2的正整数。
在本实施例中，D4＝D5*N6，使得多个电池2沿箱体的宽度方向Y的尺寸相等，能够有效降低因电池2沿箱体的宽度方向Y的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池2沿箱体的宽度方向Y排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，1m≤D5≤1.5m，2≤N6≤3。
D5可以是1m、1.05m、1.1m、1.15m、1.2m、1.25m、1.3m、1.35m、1.4m、1.45m、1.5m等中任意一者的点值或任意两者之间的范围值。N6的取值可以是2或3。
在本实施例中，1m≤D5≤1.5m，2≤N6≤3，沿箱体的宽度方向Y，每个电池2的尺寸较大，且电池2的数量不至于过多，可以减小电池2中除了电池单体21以外的其他部件(比如，电池箱22的箱壁)所占用的空间，有利于提高沿箱体的宽度方向Y排布的多个电池2在电池仓11内沿箱体的宽度方向Y的尺寸占比。
在一些实施例中，请继续参照图8，沿箱体的宽度方向Y，电池仓11仅容纳一个电池2，电池仓11的尺 寸为D1，电池2的尺寸为D5，满足：0.8≤D5/D1≤0.99。
在本实施例中，沿箱体的长度方向X，电池仓11可以容纳一个电池2，也可以容纳多个电池2。作为示例，在图8，电池仓11沿箱体的长度方向X容纳有多个电池2，电池2的长度方向平行于箱体的宽度方向Y，电池2的宽度方向平行于箱体的长度方向X，电池2的高度方向平行于箱体的高度方向Z。电池2沿箱体的宽度方向Y的尺寸为电池2长度。
D5/D1可以是0.8、0.83、0.85、0.88、0.9、0.93、0.95、0.97、0.99等中任意一者的点值或任意两者之间的范围值。
在本实施例中，电池仓11沿箱体的宽度方向Y仅容纳一个电池2，有利于提高对电池仓11沿箱体的宽度方向Y的空间的利用率。D5/D1≥0.8，使得电池2在电池仓11内沿箱体的宽度方向Y的尺寸占比较大，在箱体的宽度方向Y充分利用电池仓11的空间，有利于提高电池仓11内的所有电池2的体积占比，有利于提高储能装置10的体积能量密度。D5/D1≤0.99，使得电池仓11在箱体的宽度方向Y具有足够的安装电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.85≤D5/D1≤0.93。
在本实施例中，D5/D1可以是0.85、0.86、0.87、0.88、0.89、0.9、0.91、0.92、0.93等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.85≤D5/D1≤0.93，兼顾了储能装置10的体积能量密度和电池2在箱体的宽度方向Y上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的宽度方向Y上的安装难度。
在一些实施例中，1.5m≤D5≤2.5m。
D5可以是1.5m、1.7m、1.9m、2.1m、2.3m、2.5m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D5≥1.5m，使得电池2沿箱体的宽度方向Y的尺寸较大，电池2中沿箱体的宽度方向Y可以排布更多地电池单体21，可以满足储能装置10的大能量要求；D5≤2.5m，使得电池2沿箱体的宽度方向Y的尺寸不至于过大，降低电池2的制造难度和安装难度。
在一些实施例中，1.7m≤D5≤2.3m。
在本实施例中，D5可以是1.7m、1.8m、1.9m、2.m、2.1m、2.2m、2.3m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，1.7m≤D5≤2.3m，兼顾了储能装置10的大能量和电池2的经济性、安装便捷性要求。
在一些实施例中，请继续参照图7、图8、图10和图11所示，电池仓11内容纳有沿箱体的高度方向Z排布的多个电池2。沿箱体的高度方向Z，电池仓11的尺寸为H1，电池仓11内排布的多个电池2的尺寸之和为H4，满足：0.6≤H4/H1≤0.99。
作为示例，电池2的高度方向平行于箱体的高度方向Z。电池仓11内沿箱体1的高度排布的多个电池2的尺寸之和即为多个电池2的高度之和。电池2在箱体的高度方向Z的尺寸可以通过量尺测得。
需要说明的是，在本实施例中，电池仓11内沿箱体的高度方向Z排布的多个电池2的尺寸可以全部相等，也可以是至少两个电池2的尺寸不等。
在本实施例中，沿箱体的长度方向X，电池仓11可以容纳一个电池2，也可以容纳多个电池2。沿箱体的宽度方向Y，电池仓11可以容纳一个电池2，也可以容纳多个电池2。在图7和图8示出的实施例中，电池仓11沿箱体的长度方向X容纳多个电池2，电池仓11沿箱体的宽度方向Y容纳一个电池2；在图10和图11示出的实施例中，电池仓11沿箱体的长度方向X容纳一个电池2，电池仓11沿箱体的宽度方向Y容纳多个电池2。
H4/H1可以是0.6、0.65、0.7、0.75、0.8、0.85、0.9、0.95、0.99等中任意一者的点值或任意两者之间的范围值。
电池仓11内容纳有沿箱体的高度方向Z排布的多个电池2，使得单个电池2沿箱体的高度方向Z的尺寸不至于过大，降低电池2的制造难度和安装难度。H4/H1≥0.6，使得沿箱体的高度方向Z排布的多个电池2在电池仓11内沿箱体的高度方向Z的尺寸占比较大，在箱体的高度方向Z充分利用电池仓11的空间，减小相邻的两个电池2在箱体的高度方向Z上的间隙，有利于提高所有电池2在电池仓11中的体积占比，有利于提高储能装置10的体积能量密度。H4/H1≤0.99，使得电池仓11在箱体的高度方向Z具有足够的安装多个电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.7≤H4/H1≤0.92。
H4/H1可以是0.7、0.71、0.72、0.73、0.74、0.75、0.76、0.77、0.78、0.79、0.8、0.81、0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9、0.91、0.92等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.7≤H4/H1≤0.92，兼顾了储能装置10的体积能量密度和电池2在箱体的高度方向Z上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的高度方向Z上的安装难度。
在一些实施例中，沿箱体的高度方向Z，每个电池2的尺寸为H5，电池仓11内排布有N7个电池2，满足：H4＝H5*N7。
其中，N7为大于等于2的正整数。
在本实施例中，H4＝H5*N7，使得多个电池2沿箱体的高度方向Z的尺寸相等，能够有效降低因电池2沿箱体的高度方向Z的尺寸不同而造成空间浪费的概率。在组装时，可以选用同一规格的多个电池2沿箱体的高度方向Z排布，提高储能装置10的组装效率，降低储能装置10的制造成本。
在一些实施例中，0.2m≤H5≤0.3m，2≤N7≤10。
H5可以是0.21m、0.22m、0.23m、0.24m、0.25m、0.26m、0.27m、0.28m、0.29m、0.3m等中任意一者的点值或任意两者之间的范围值。N7的取值可以是2、3、3、4、5、6、7、8、9或10。
在本实施例中，0.2m≤H5≤0.3m，2≤N7≤10，沿箱体的高度方向Z，每个电池2的尺寸较大，且电池2的数量不至于过多，可以减小电池2中除了电池单体21以外的其他部件(比如，电池箱22的箱壁)所占用的空间，有利于提高沿箱体的高度方向Z排布的多个电池2在电池仓11内沿箱体的高度方向Z的尺寸占比。
在一些实施例中，请参照图12，图12为本申请一些实施例提供的储能装置10的剖视图。沿箱体的高度方向Z，电池仓11仅容纳一个电池2，电池仓11的尺寸为H1，电池2的尺寸为H5，满足：0.8≤H5/H1≤0.99。
在本实施例中，沿箱体的长度方向X，电池仓11可以容纳一个电池2，也可以容纳多个电池2。沿箱体的宽度方向Y，电池仓11可以容纳一个电池2，也可以容纳多个电池2。作为示例，在图12中，电池仓11沿箱体的宽度方向Y容纳多个电池2，电池仓11沿箱体的长度方向X容纳多个电池2。
H5/H1可以是0.8、0.83、0.85、0.88、0.9、0.93、0.95、0.97、0.99等中任意一者的点值或任意两者之间的范围值。
在本实施例中，电池仓11沿箱体的高度方向Z仅容纳一个电池2，有利于提高对电池仓11沿箱体的高度方向Z的空间的利用率。H5/H1≥0.8，使得电池2在电池仓11内沿箱体的高度方向Z的尺寸占比较大，在箱体的高度方向Z充分利用电池仓11的空间，有利于提高电池仓11内的所有电池2的体积占比，有利于提高储能装置10的体积能量密度。H5/H1≤0.99，使得电池仓11在箱体的高度方向Z具有足够的安装电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.85≤H5/H1≤0.93。
在本实施例中，H5/H1可以是0.85、0.86、0.87、0.88、0.89、0.9、0.91、0.92、0.93等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.85≤H5/H1≤0.93，兼顾了储能装置10的体积能量密度和电池2在箱体的高度方向Z上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的高度方向Z上的安装难度。
在一些实施例中，1.5m≤H5≤2.5m。
H5可以是1.5m、1.7m、1.9m、2.1m、2.3m、2.5m等中任意一者的点值或任意两者之间的范围值。
H5≥1.5m，使得电池2沿箱体的高度方向Z的尺寸较大，电池2中电池单体21沿箱体的高度方向Z的尺寸较大，可以满足储能装置10的大能量要求；H5≤2.5m，使得电池2沿箱体的高度方向Z的尺寸不至于过大，降低电池2的制造难度和安装难度。
在一些实施例中，1.7m≤H5≤2.3m。
在本实施例中，H5可以是1.7m、1.8m、1.9m、2.m、2.1m、2.2m、2.3m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，1.7m≤H5≤2.3m，兼顾了储能装置10的大能量和电池2的经济性、安装便捷性要求。
在一些实施例中，请参照图13和图14，图13为本申请再一些实施例提供的储能装置10的结构视图；图14为图13所示的箱体1的结构示意图。电池仓11包括多个子仓111，多个子仓111沿箱体的长度方向X排布，每个子仓111均容纳有至少一个电池2。
子仓111可以是两个、三个、四个、五个、六个、七个、八个或者更多。相邻的两个子仓111可以通过分隔件112分隔，分隔件112可以是设置两个子仓111之间的分隔板，也可以是设置在两个子仓111之间的分隔梁，分隔梁可以沿箱体的高度方向Z延伸。在分隔件112为设置在相邻的两个子仓111之间的分隔梁时，相邻的两个子仓111之间的分隔梁可以设置成多个，多个分隔梁可以沿箱体的宽度方向Y间隔排布。
子仓111可以是多种形状，比如、圆柱体状、棱柱体状。棱柱体可以是三棱柱、四棱柱、五棱柱、六棱柱等。作为示例，在图13中，子仓111为四棱柱状，具体地，子仓111为长方体状。子仓111内可以容纳一个电池2，也可以容纳多个电池2。
在本实施例中，将电池仓11分为多个子仓111，每个子仓111内均可容纳电池2，使得电池2能够更为规则地容纳在电池仓11内，更容易实现电池2的安装。
在一些实施例中，子仓111的体积为V4，子仓111内的电池2的体积之和为V5，满足；0.75≤V5/V4≤0.95。
子仓111的体积可以通过多种方式测量。对于规则形状的子仓111而言，以子仓111为长方体状为例，可以通过测量工具分别测出子仓111的长度、宽度和高度，并通过测量得到的子仓111的长度、宽度和高度计算得出子仓111的体积V4，可理解的是，子仓111的长度、宽度和高度三者的乘积即为V4，其中，测量工具可以选用量尺。对于非规则形状的子仓111而言，很难通过测量子仓111的外形尺寸来计算得出子仓111的体积，可以采用填充法对子仓111的体积进行测量。具体方法如下：向子仓111内填满塑料粒，塑料粒的材质可以是PP(polypropylene，聚丙烯)或PE(polyethylene，聚乙烯)，粒径为0.5mm-1.5mm，密度为0.94g/cm3-0.96g/cm3；通过量具容器测量子仓111内的塑料粒的总体积，从而得出子仓111的体积。当然，在测量塑料粒的总体积时，也可以通过称重装置测量出子仓111内的塑料粒的总重量，并计算得出子仓111内的塑料粒的总质量，再根据塑料粒的总体积＝塑料粒的总质量/塑料粒的密度，计算得出塑料粒的总体积，从而得出子仓111的体积V4。
在本实施例中，子仓111内的电池2可以是一个，也可以是多个。若子仓111内的电池2为一个，子仓111内的电池2的体积之和即为该电池2的体积。若子仓111内的电池2为多个，子仓111内的电池2的体积之和则为子仓111内的所有电池2的体积之和。子仓111内的多个电池2可以串联或并联或混联，混联是指多个电池2中既有串联又有并联。沿箱体的长度方向X，子仓111可以容纳一个电池2，也可以容纳多个电池2；沿箱体的宽度 方向Y，子仓111可以容纳一个电池2，也可以容纳多个电池2；沿箱体的高度方向Z，子仓111可以容纳一个电池2，也可以容纳多个电池2。
若子仓111内的电池2为多个，子仓111内的所有电池2的体积可以相等，也可以至少两个电池2的体积不等。V5为子仓111内的所有电池2的体积之和，若子仓111内的所有电池2的体积相等，则可以测出一个电池2的体积，再用该电池2的体积乘以子仓111内的电池2的个数得出V5。若子仓111内所有电池2的体积至少两个不等，比如，子仓111内所有电池2由两种不同体积的电池2组成，可以先测量第一种电池2的体积，并将该第一种电池2的体积乘以子仓111内的第一种电池2的个数得出第三总体积，再测量第二种电池2的体积，并将该第二种电池2的体积乘以子仓111内第二种电池2的个数得出第四总体积，第三总体积和第四总体积之和为V5。
电池2的体积可以通过多种方式测量，对于规则形状的电池2而言，以电池2为长方体状为例，可以通过测量工具分别测出电池2的长度、宽度和高度，并通过测量得到的电池2的长度、宽度和高度计算得出电池2的体积，可以理解的是，电池2的长度、宽度和高度三者的乘积即为电池2的体积，其中，测量工具可以选用量尺。需要说明的是，若电池2的各个外表面为平面，则以各个外表面为基准测量出电池2的长度、宽度和高度；若电池2的某一个外表面形成有凸起或凹部，则以该外表面的平面区域为基准测量出电池2的长度、宽度和高度。对于非规则形状的电池2而言，很难通过测量电池2的外形尺寸来计算得出电池2的体积，可以采用浸液法对电池2的体积进行测量。具体方法如下：在测量容器中注入液体，并记录液体的液面对应的体积值X3，将电池2逐渐浸入液体中，直到电池2完全浸入液体内，记录此时液体的液面对应的体积值X4，X4-X3则为电池2的体积。
V5/V4可以是0.75、0.78、0.8、0.82、0.85、0.87、0.9、0.92、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中，V5/V4≥0.75，使得子仓111内的所有电池2的体积占比较大，从而提高了对子仓111的空间利用率，有利于提高储能装置10的体积能量密度。V5/V4≤0.95，使得子仓111内的所有电池2的体积占比不至于过大，降低了电池2装入子仓111内的组装精度要求，能够有效将储能装置10的制造成本控制在合理范围内。
在一些实施例中，0.82≤V5/V4≤0.9。
在本实施例中，V5/V4可以是0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.82≤V5/V4≤0.9，兼顾了储能装置10的体积能量密度要求和经济性要求，有利于进一步降低了储能装置10的制造成本，以及提高储能装置10的体积能量密度。
在一些实施例中，请继续参照图13，沿箱体的长度方向X，子仓111仅容纳一个电池2。这样，可以减小电池2中除了电池单体21以外的其他部件(比如，电池箱22的箱壁)所占用的空间，有利于提高电池2在子仓111内沿箱体的长度方向X的占比，有利于提高对子仓111沿箱体的长度方向X的空间的利用率。
在一些实施例中，沿箱体的长度方向X，子仓111的尺寸为L6，电池2的尺寸L5，满足：0.85≤L5/L6≤0.99。
作为示例，子仓111和电池2为长方体状，子仓111的长度方向和电池2的长度方向平行于箱体的宽度方向Y，子仓111的宽度方向和电池2的宽度方向平行于箱体的长度方向X，子仓111的高度方向和电池2的高度方向平行于箱体的高度方向Z。子仓111沿箱体的长度方向X的尺寸即为子仓111宽度，电池2沿箱体的长度方向X的尺寸即为电池2的宽度。
L5/L6可以是0.85、0.88、0.9、0.93、0.95、0.97、0.99等中任意一者的点值或任意两者之间的范围值。
在本实施例中，L5/L6≥0.85，使得电池2在子仓111内沿箱体的长度方向X的尺寸占比较大，在箱体的长度方向X充分利用子仓111的空间，有利于提高子仓111内所有电池2的体积占比，有利于提高储能装置10的体积能量密度。L5/L6≤0.99，使得子仓111在箱体的长度方向X具有足够的安装电池2的安装余量，降低电池2的安装难度。
在一些实施例中，0.88≤L5/L6≤0.95。
在本实施例中，L5/L6可以是0.88、0.89、0.9、0.91、0.92、0.93、0.94、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.88≤L5/L6≤0.95，兼顾了储能装置10的体积能量密度和电池2在箱体的长度方向X上安装便捷性要求，既有利于提高储能装置10的体积能量密度，又能够进一步降低电池2在箱体的长度方向X上的安装难度。
在一些实施例中，请参照图15，图15为图13所示的储能装置10的D-D剖视图。沿箱体的宽度方向Y，子仓111仅容纳一个电池2。
在本实施例中，沿箱体的长度方向X，子仓111可以容纳一个电池2，也可以容纳多个电池2。
在本实施例中，子仓111沿箱体的宽度方向Y仅容纳一个电池2，可以减小电池2中除了电池单体21以外的其他部件(比如，电池箱22的箱壁)所占用的空间，有利于提高电池2在子仓111内沿箱体的宽度方向Y的占比，有利于提高对子仓111沿箱体的宽度方向Y的空间的利用率。
在一些实施例中，请继续参照图13，沿箱体的高度方向Z，子仓111容纳有多个电池2。
在本实施例中，沿箱体的长度方向X，子仓111可以容纳一个电池2，也可以容纳多个电池2。沿箱体的宽度方向Y，子仓111可以容纳一个电池2，也可以容纳多个电池2。
沿子仓111的高度方向，子仓111容纳的电池2可以是两个、三个、四个、五个、六个、七个、八个、九个、十个或者更多。
作为示例，沿箱体的长度方向X，子仓111仅容纳一个电池2；沿箱体的宽度方向Y，子仓111仅容纳一个电池2；沿箱体的高度方向Z，子仓111容纳多个电池2。每个子仓111内的所有电池2串联。在相邻的两个子仓111中，一个子仓111内的所有电池2串联后形成第一电池组(电池簇)，另一个子仓111内的所有电池2串联后形成第二电池组(电池簇)，第一电池组与第二电池组并联。在箱体1具有电气仓和主控仓15的实施例中，主控仓15中的主控单元可以实现电池簇的高压控制和通讯，电气仓中汇流单元可以实现多个电池簇并联汇流，实现多个电池簇与储能变流器(PCS，Power Conversion System)的直流侧的安全连接。
作为示例，沿箱体的长度方向X，每个子仓111的两侧均设置有支撑件113。沿箱体的高度方向Z，支撑件113位于电池2的底部，支撑件113用于支撑电池2。支撑件113可以安装在电池仓11的仓壁以及分隔件112上。支撑件113的设置，一方面，能够提高各个电池2在子仓111内的稳定性；另一方面，使得子仓111内沿箱体的高度方向Z相邻的两个电池2之间保持一定距离，在拆装一个电池2时不易对相邻的电池2造成影响。
在本实施例中，子仓111沿箱体的高度方向Z容纳有多个电池2，可以降低单个电池2在箱体的高度方向Z的尺寸，降低电池2的制造难度和制造成本。
在一些实施例中，子仓111的个数小于等于4。
在本实施例中，子仓111可以是两个、三个或四个。在图13示出的实施例中，子仓111为四个。
在本实施例中，子仓111的个数小于等于4个，电池仓11内分隔相邻的两个子仓111的分隔部件较少，减少分隔部件占用电池仓11的空间，以为电池2提供更多的空间，提高了电池仓11的空间利用率。
在一些实施例中，电池2的体积为V6，电池2的多个电池单体21的外壳211的体积之和为V7，满足：0.5≤V7/V6≤0.8。
作为示例，请参照图16和图17，图16为本申请一些实施例提供的电池2的结构示意图；图17为图16所示的电池2的E-E剖视图。电池2包括电池箱22和多个电池单体21，多个电池单体21容纳与电池箱22内。电池箱22可以包括第一部分221和第二部分222，第一部分221与第二部分222相互盖合，以限定出用于容纳电池单体21的容纳空间。电池箱22的体积即为电池2的体积V6。以电池箱22为长方体状为例，可以通过测量工具分别测出电池箱22的长度、宽度和高度，并通过测量得到的电池箱22的长度、宽度和高度计算得出电池箱22的体积，从而得到电池2的体积V6。可以理解的是，电池箱22的长度、宽度和高度三者的乘积即为电池箱22的体积，其中，测量工具可以选用量尺。
电池2的多个电池单体21可以串联、并联或混联。多个电池单体21可以通过汇流部件23实现串联、并联或混联，汇流部件23可以是金属导体，比如、铜、铁、铝、钢、铝合金等。电池2还可以包括热管理部件，热管理部件可以设置在电池箱22内或集成于电池箱22的箱壁，热管理部件用于管理电池单体21的温度。热管理部件可以是容纳流体介质的水冷板。
V7为电池2的所有电池单体21的外壳211的体积之和，电池2的所有电池单体21的外壳211的体积可以相等，也可以至少两个电池单体21的外壳211的体积不等。若电池2的所有电池单体21的外壳211的体积相等，则可以测出一个电池单体21的外壳211的体积，再用该电池单体21的外壳211的体积乘以电池2的电池单体21的个数得出V7。若电池2中的至少两个电池单体21的外壳211的体积不等，比如，电池2的所有电池单体21的外壳211由两种不同体积的外壳211组成，可以先测量第一种电池单体21的外壳211的体积，并将该第一种电池单体21的外壳211的体积乘以电池2的第一种电池单体21的个数得出第五总体积，再测量第二种电池单体21的外壳211的体积，并将该第二种电池单体21的外壳211的体积乘以电池2的第二种电池单体21的个数得出第六总体积，第五总体积和第六总体积之和为V7。
在本实施例中，V7/V6可以是0.5、0.53、0.55、0.58、0.6、0.63、0.65、0.68、0.7、0.73、0.75、0.78、0.8等中任意一者的点值或任意两者之间的范围值。
在本实施例中，V7/V6≥0.5，使得电池2的所有电池单体21在电池2中的体积占比较大，提高了对电池2内部空间的利用率，有利于提高电池2的体积能量密度，以提高储能装置10的体积能量密度；V7/V6≤0.8，使得电池2的所有电池单体21在电池2中的体积占比不至于过大，为电池2的其他部件(比如，汇流部件23、热管理部件等)提供更多的空间，降低电池2的组装难度和制造成本。
在一些实施例中，0.58≤V7/V6≤0.7。
在本实施例中，V7/V6可以是0.58、0.59、0.6、0.61、0.62、0.63、0.64、0.65、0.66、0.67、0.68、0.69、0.7等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.58≤V7/V6≤0.7，兼顾了电池2的体积能量密度和电池2的经济性、组装便捷性要求。有利于进一步提高电池2的体积能量密度，以及降低电池2的组装难度和制造成本。
在一些实施例中，电池2的电池单体21的个数为N8，每个电池单体21的外壳211的体积为V3，满足：V7＝V3*N8。
其中，N8为大于等于2的正整数。
在本实施例中，V7＝V3*N8，使得电池2的所有电池单体21的外壳211的体积相等，可以选用同一规格的电池单体21。一方面，有利于提高电池2的组装效率；另一方面，能够降低因电池2的电池单体21的规格不同而造成空间浪费的开率。
在一些实施例中，请继续参照图16和图17，电池2包括p*q个电池单体21，p*q个电池单体21呈p行q列排布，每行电池单体21沿箱体的长度方向X设置，每列电池单体21沿箱体的宽度方向Y设置，p和q均为正整数。
在电池2中，所有电池单体21呈p行q列矩形阵列排布。每行电池单体21中的电池单体21为q个，每列电池单体21中的电池单体21为p个。电池2的电池单体21为多个，p和q中的至少一者大于等于2。
作为示例，p和q均大于2，每列电池单体21包括串联的多个电池单体组，每个电池单体组包括并联的多个电池单体21，相邻的两列电池单体21并联。在图17示出的实施例中，p＝26，q＝4，每列电池单体21中的电池单体21为26个，每两个电池单体21并联，以形成13个电池单体组，13个电池单体组串联连接，4列电池单体21并联。
在电池单体21的外壳211(图16和图17未示出)为长方体状的实施例中，外壳211的长度方向、宽度方向和高度方向中的任意一者平行于箱体的长度方向X，另一者平行于箱体的宽度方向Y，再一者平行于箱体的高度方向Z。在图16和图17示出的实施例中，外壳211的长度方向与箱体的长度方向X平行，外壳211的宽度方向与箱体的宽度方向Y平行，外壳211的高度方向与箱体的高度方向Z平行。
在电池2内设置有热管理部件的实施例中，热管理部件可以设置在每列电池单体21中相邻的两个电池单体21之间，也可以设置在每行电池单体21中相邻的两个电池单体21之间。
在本实施例中，电池2的所有电池单体21呈矩形阵列分布，使得电池2的电池单体21排布的更加规则，有利于提升电池2的空间利用率。
在一些实施例中，在每行电池单体21中，q个电池单体21的外壳211沿箱体的长度方向X的尺寸之和为L7，电池2沿箱体的长度方向X的尺寸为L5，满足：0.8≤L7/L5≤0.95。
在每行电池单体21中，可以是q个电池单体21的外壳211沿箱体的长度方向X的尺寸可以相等，也可以至少两个电池单体21的外壳211沿箱体的长度方向X的尺寸不等。
在图16和图17示出的实施例中，电池单体21的外壳211的长度方向和电池2的宽度方向平行于箱体的长度方向X，q个电池单体21的外壳211沿箱体的长度方向X的尺寸之和即为q个电池单体21的外壳211的长度之和，电池2沿箱体的长度方向X的尺寸即为电池2的宽度。
在本实施例中，L7/L5可以是0.8、0.83、0.85、0.87、0.9、0.92、0.95等中任意一者的点值或任意两者之间的范围值。
L7/L5≥0.8，使得每行电池单体21的外壳211在电池2中沿箱体的长度方向X的尺寸占比较大，充分利用电池2在箱体的长度方向X上的空间，减小相邻的两个电池单体21的外壳211在箱体的长度方向X上的间隙，有利于提高电池2内的所有电池单体21的外壳211的体积占比，有利于提高电池2的体积能量密度。L7/L5≤0.95，每行电池单体21的外壳211在电池2中沿箱体的长度方向X的尺寸占比不至于过大，降低电池2的制造难度和制造成本。
在一些实施例中，0.85≤L7/L5≤0.9。
在本实施例中，L7/L5可以是0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本是实施例中，0.85≤L7/L5≤0.9，兼顾了电池2的体积能量密度、电池2的制造难易程度以及电池2经济性要求。有利于进一步提高电池2的体积能量密度，以及降低电池2的制造难度和制造成本。
在一些实施例中，沿箱体的长度方向X，每个电池单体21的外壳211的尺寸均为L3，满足：L3＝L7/q，0.17m≤L3≤0.6m，1≤q≤5。
L3可以是0.17m、0.2m、0.25m、0.3m、0.35m、0.4m、0.45m、0.5m、0.55m、0.6m等中任意一者的点值或任意两者之间的范围值。q可以是1、2、3、4或5。
在本实施例中，L3＝L7/q，使得电池2中每行中的电池单体21的外壳211沿箱体的长度方向X的尺寸相等，每行中的电池单体21可以选用规格相同的电池单体21。而0.17m≤L3≤0.6m，且1≤q≤5，这样，在每行电池单体21中，每个电池单体21的尺寸较大，且电池2的数量不至于过多，可以减少外壳211在箱体的长度方向X上的壁所占用的空间，有利于提高每行电池单体21的外壳211在电池2中沿箱体的长度方向X的尺寸占比，有利于提高电池2的空间利用率，以提高电池2的体积能量密度。
在一些实施例中，q＝4，0.2m≤L3≤0.3m。
在本实施例中，L3可以是0.2m、0.21m、0.22m、0.23m、0.24m、0.25m、0.26m、0.27m、0.28m、0.29m、0.3m等中任意一者的点值或任意两者之间的范围值。
当每行电池单体21中的电池单体21为四个时，将电池单体21的外壳211的尺寸控制在0.2m～0.3m范围内，使得电池2具有较高的体积能量密度。
在一些实施例中，q＝2，0.4m≤L3≤0.6m。
在本实施例中，L3可以是0.4m、0.43m、0.45m、0.48m、0.5m、0.53m、0.55m、0.58m、0.6m等中任意一者的点值或任意两者之间的范围值。
当每行电池单体21中的电池单体21为两个时，将电池单体21的外壳211的尺寸控制在0.4m≤L3≤0.6m范围内，使得电池2具有较高的体积能量密度。
在一些实施例中，在每列电池单体21中，p个电池单体21的外壳211沿箱体的宽度方向Y的尺寸之和为D7，电池2沿箱体的宽度方向Y的尺寸为D5，满足：0.75≤D7/D5≤0.95。
在每列电池单体21中，可以是p个电池单体21的外壳211沿箱体的宽度方向Y的尺寸可以相等，也可以至少两个电池单体21的外壳211沿箱体的宽度方向Y的尺寸不等。
在图16和图17示出的实施例中，电池单体21的外壳211的宽度方向和电池2的长度方向平行于箱体的宽度方向Y，p个电池单体21的外壳211沿箱体的宽度方向Y的尺寸之和即为p个电池单体21的外壳211的宽度之和，电池2沿箱体的宽度方向Y的尺寸即为电池2的长度。
在本实施例中，D7/D5可以是0.75、0.78、0.8、0.83、0.85、0.87、0.9、0.92、0.95等中任意一者的点值或任意两者之间的范围值。
在一些实施例中，D7/D5≥0.75，使得每列电池单体21的外壳211在电池2中沿箱体的宽度方向Y的尺寸占比较大，充分利用电池2在箱体的宽度方向Y上的空间，减小相邻的两个电池单体21的外壳211在箱体的宽度方向Y上的间隙，有利于提高电池2内的所有电池单体21的外壳211的体积占比，有利于提高电池2的体积能量密度。D7/D5≤0.95，每列电池单体21的外壳211在电池2中沿箱体的宽度方向Y的尺寸占比不至于过大，降低电池2的制造难度和制造成本。
在一些实施例中，0.82≤D7/D5≤0.9。
在本实施例中，D7/D5可以是0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，D7/D5，兼顾了电池2的体积能量密度、电池2的制造难易程度以及电池2经济性要求。有利于进一步提高电池2的体积能量密度，以及降低电池2的制造难度和制造成本。
在一些实施例中，沿箱体的宽度方向Y，每个电池单体21的外壳211的尺寸均为D3，满足：D3＝D7/p，0.04m≤D3≤0.12m，20≤p≤30。
D3可以是0.04m、0.05m、0.06m、0.07m、0.08m、0.09m、0.1m、0.11m、0.12m等中任意一者的点值或任意两者之间的范围值。p可以是20、21、22、23、24、25、26、28、29或30。
在本实施例中，D3＝D7/p，使得电池2中每列中的电池单体21的外壳211沿箱体的宽度方向Y的尺寸相等，每列中的电池单体21可以选用规格相同的电池单体21。而0.04m≤D3≤0.12m，20≤p≤30，这样，在每列电池单体21中，每个电池单体21的尺寸较大，且电池2的数量不至于过多，可以减少外壳211在箱体的宽度方向Y上的壁所占用的空间，有利于提高每列电池单体21的外壳211在电池2中沿箱体的宽度方向Y的尺寸占比，有利于提高电池2的空间利用率，以提高电池2的体积能量密度。
在一些实施例中，0.06m≤D3≤0.08m，24≤p≤28。
在本实施例中，D3可以是0.06m、0.063m、0.065m、0.068m、0.07m、0.073m、0.075m、0.078m、0.08m等中任意一者的点值或任意两者之间的范围值。p可以是24、25、26或28。
在本实施例中，0.06m≤D3≤0.08m，24≤p≤28，这样的电池2具有较高的体积能量密度。
在一些实施例中，电池单体21的外壳211沿箱体的高度方向Z的尺寸为H3，电池2沿箱体的高度方向Z的尺寸为H5，满足：0.75≤H3/H5≤0.95。
在图16和图17示出的实施例中，电池单体21的外壳211的高度方向和电池2的高度方向平行于箱体的高度方向Z，电池单体21的外壳211沿箱体的高度方向Z的尺寸即为电池单体21的外壳211的高度，电池2沿箱体的高度方向Z的尺寸即为电池2的高度。
H3/H5可以是0.75、0.78、0.8、0.83、0.85、0.87、0.9、0.92、0.95等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H3/H5≥0.75，使得电池单体21的外壳211在电池2中沿箱体的高度方向Z的尺寸占比较大，充分利用了电池2在箱体的高度方向Z上的空间，有利于提高电池2内的所有电池单体21的外壳211的体积占比，有利于提高电池2的体积能量密度。H3/H5≤0.95，使得电池单体21的外壳211在电池2中沿箱体的高度方向Z的尺寸占比不至于过大，降低电池2的制造难度和制造成本。
在一些实施例中，0.82≤H3/H5≤0.9。
在本实施例中，H3/H5可以是0.82、0.83、0.84、0.85、0.86、0.87、0.88、0.89、0.9等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.82≤H3/H5≤0.9，兼顾了电池2的体积能量密度、电池2的制造难易程度以及电池2经济性要求。有利于进一步提高电池2的体积能量密度，以及降低电池2的制造难度和制造成本。
在一些实施例中，0.17m≤H3≤0.6m。
H3可以是0.17m、0.2m、0.25m、0.3m、0.35m、0.4m、0.45m、0.5m、0.55m、0.6m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，H3≥0.17m，使得电池单体21的外壳211沿箱体的高度方向Z的尺寸较大，有利于提高电池单体21的外壳211在电池2中沿箱体的高度方向Z的尺寸的占比，有利于提高电池单体21的体积能量密度。H3≤0.6m，使得电池单体21的外壳211沿箱体的高度方向Z的尺寸不至于过大，能够有效降低电池单体21的制造难度和制造成本。
在一些实施例中，0.2m≤H3≤0.45m。
在本实施例中，H3可以是0.2m、0.23m、0.25m、0.28m、0.3m、0.33m、0.35m、0.38m、0.4m、0.43m、0.45m等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.2m≤H3≤0.45m，兼顾了电池2的体积能量密度、电池2的制造难易程度以及电池2经济性要求。有利于进一步提高电池2的体积能量密度，以及降低电池2的制造难度和制造成本。
在一些实施例中，请参照图18-图21，图18为本申请一些实施例提供的电池单体21的轴测图；图19为图18所示的电池单体21的爆炸图；图20为图18所示的电池单体21沿UW平面剖切的剖视爆炸图；图21为图18所示的电池单体21沿VW平面剖切的剖视爆炸图。电池单体21还包括至少一个电极组件213，电极组件213容纳于外壳211内。外壳211呈直平行六面体状，外壳211在第一方向U上的尺寸为W1，外壳211在第二方向V上的尺寸为T1，外壳211在第三方向W上的尺寸为K1，第一方向U、第二方向V和第三方向W三者中的一者平行于箱体的长度方向X，另一者平行于箱体的宽度方向Y，再一者平行于箱体的高度方向Z。外壳211包括沿第一方向U相对设置的第一壁2113和第二壁2114、沿第二方向V相对设置的第三壁2115和第四壁2116、沿第三方向W相对设置的第五壁2117和第六壁2118，第一壁2113和第二壁2114的厚度之和为a，第三壁2115和第四壁2116的厚度之和为 b，第五壁2117和第六壁2118的厚度之和为c，满足：(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9。
W1*T1*K1表示外壳211的体积，即V3＝W1*T1*K1。
外壳211内的电极组件213可以是一个，也可以是多个。若外壳211内的电极组件213为多个，多个电极组件213可以并联。
外壳211呈直平行六面体状，直平行六面体可以是长方体、正方体等。在外壳211的六个壁中，可以是四个壁形成外壳211，另两个壁为端盖2112，也可以五个壁形成外壳211，另一个壁为端盖2112。外壳211在第一方向U上的尺寸、外壳211在第二方向V上的尺寸、外壳211在第三方向W上的尺寸、第一壁2113的厚度、第二壁2114的厚度、第三壁2115的厚度、第四壁2116的厚度、第五壁2117的厚度以及第六壁2118的厚度均可以通过游标卡尺测得。
作为示例，第一壁2113、第二壁2114、第三壁2115、第四壁2116、第五壁2117和第六壁2118均为铝合金。铝合金包括以下质量百分含量的成分：铝≥96.7％，0.05％≤铜≤0.2％，铁≤0.7％，锰≤1.5％，硅≤0.6％，锌≤0.1％，其他单个元素成分≤0.05％，其他元素总成分≤0.15％。
作为示例，第一方向U为电池单体21的外壳211的长度方向，第二方向V为电池单体21的外壳211的宽度方向，第三方向W为电池单体21的外壳211的高度方向。可以理解的是，W1为电池单体21的外壳211长度，T1为电池单体21的外壳211的宽度，K1为电池单体21的外壳211的高度。
(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)可以是0.9、0.905、0.91、0.915、0.92、0.925、0.93、0.935、0.94、0.945、0.95、0.955、0.96、0.965、0.97、0.975、0.98、0.985、0.99、0.995等中任意一者的点值或任意两者之间的范围值。
其中，(W1-a)*(T1-b)*(K1-c)可以理解为外壳211的内部空间的体积，也就是外壳211的内表面围成的空间的体积。W1*T1*K1为外壳211的体积。需要说明的是，在外壳211的端盖2112上形成由凸出于端盖的外表面2112a的凸包2112b的实施例中，外壳211的体积并不包含凸包2112b的体积。
若外壳211的六个壁的外表面均为平面，则以各个壁的外表面为基准测量出W1、T1和K1。比如，若第五壁2117的外表面和第六壁2118的外表面均为平面，则K1为沿第三方向W，第五壁2117的外表面和第六壁2118的外表面之间的距离。
若外壳211的某一个壁的外表面形成有凸部或凹部，则以该外表面的平面区域(即，凸部或凹部以外的区域)为基准测量出W1、T1和K1。比如，第五壁2117的外表面为平面，第六壁2118的外表面形成有第一凸部(如第六壁2118为端盖2112，端盖2112上形成的凸部为第一凸部)，则K1为第六壁2118的外表面除第一凸部以外的平面区域和第五壁2117的外表面之间沿第三方向W的距离。若第六壁2118的外表面形成有第一凸部，第五壁2117的外表面形成有第二凸部，则K1为第五壁2117的外表面除第二凸部以外的平面区域和第六壁2118的外表面除第一凸部以外的平面区域之间沿第三方向W的距离。
若外壳211的六个壁均为厚度均匀的壁，则可以从各个壁的任意位置测量该壁的外表面与内表面之间的距离，从而得到该壁的厚度。若外壳211的某一个壁为厚度不均匀的壁，则从该壁的厚度最大处测量该壁的外表面与内表面之间的距离，从而得到该壁的厚度。也就是说，若某一个壁的厚度不均匀，则取该壁的最大厚度来计算a或b或c。
在这样的电池单体21中，电池单体21的外壳211的内部空间的体积与外壳211的体积的比值在0.9以上，使得外壳211的内部空间占比较大，外壳211可以用来容纳电极组件213的空间增大，在相同的化学体系下，电池单体21的体积能量密度可以得到提高。
以下通过具体实验数据进行具体说明：
在实验中，电池单体21选用方壳电池单体，外壳211的壳体2111为一端开口的空心结构，电池单体21中的端盖2112为一个。
表2

根据上述表2，对比实施例13-16和对比例3可知，在电池单体21的正极材料包括含锂磷酸盐的情况 下，(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9，能够有效提高电池单体21的体积能量密度。对比实施例17-20和对比例4可知，在电池单体21的正极材料包括锂过渡金属氧化物的情况下，(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9，能够有效提高电池单体21的体积能量密度。对比实施例21-24和对比例5可知，在电池单体21为钠离子电池单体的情况下，(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9，能够有效提高电池单体21的体积能量密度。
在一些实施例中，(W1-a)/W1≥0.97，(T1-b)/T1≥0.965，且(K1-c)/K1≥0.965。
通过将W1-a和W1的比值设定为0.97以上，使得在电池单体21长度不变的情况下，外壳211的内部空间的长度变大，从而可以容纳更长的电极组件213；在相同的化学材料体系下，电池单体21的体积能量密度可以得到提高。(W1-a)/W1可以是0.97、0.975、0.98、0.985、0.99、0.995等中任意一者的点值或任意两者之间的范围值。
通过将T1-b和T1的比值设定为0.965以上，使得在电池单体21宽度不变的情况下，外壳211内部空间的宽度变大，从而可以容纳更宽的电极组件213；在相同的化学材料体系下，电池单体21的体积能量密度可以得到提高。(T1-b)/T1可以是0.965、0.97、0.975、0.98、0.985、0.99、0.995等中任意一者的点值或任意两者之间的范围值。
通过将K1-c和K1的比值设定为0.965以上，使得在电池单体21高度不变的情况下，外壳211内部空间的高度变大，从而可以容纳更高的电极组件213；在相同的化学材料体系下，电池单体21的体积能量密度可以得到提高。(K1-c)/K1可以是0.965、0.97、0.975、0.98、0.98.5、0.99、0.995等中任意一者的点值或任意两者之间的范围值。
在一些实施例中，请继续参照图18-图21，外壳211包括壳体2111和端盖2112，壳体2111具有开口，端盖2112盖合于开口，端盖2112设置有电极端子212。壳体2111包括一体成型的第一壁2113、第二壁2114、第三壁2115、第四壁2116和第五壁2117，端盖2112为第六壁2118。
在本实施例中，壳体2111为一端形成开口的空心结构，外壳211中的端盖2112为一个。端盖2112与壳体2111分体设置并连接，端盖2112与壳体2111可以焊接或卷封连接等。
在组装电池2时，可以先将电极端子212安装于端盖2112，再将电极组件213容纳于壳体2111内，再将端盖2112盖合于壳体2111的开口，可以降低将电极组件213安装于外壳211内的难度以及降低将电极端子212安装于外壳211的难度。
在一些实施例中，请继续参照图20和图21，第一壁2113和第二壁2114的厚度均为a1，2*a1＝a；第三壁2115和第四壁2116的厚度均为b1，2*b1＝b；第五壁2117的厚度为c1，第六壁2118的厚度为c2，c2＞c1，c1＞a1，c1＞b1。0.5mm≤a1≤1.5mm，0.5≤b1≤1.5mm，1.0mm≤c1≤2.5mm，1.5mm≤c2≤4mm。
为了减小电极组件213在装入壳体2111的过程中与壳体2111发生干涉的可能性，降低电极组件213受损的风险，在设计壳体2111时会为电极组件213留出一定的装配间隙(即，入壳间隙)，该装配间隙可以为0.8-2mm。
另外，为了降低电池单体21发生内部短路的可能性，可以在外壳211内部设置绝缘件，但绝缘件不可避免地会占用一部分外壳211的内部空间，从而导致留给电极组件213和电解液的空间减小。
在一些实施例中，电池单体21还包括第一绝缘件214和第二绝缘件215，第一绝缘件214设置于第五壁2117和电极组件213之间，并与第五壁2117抵接。第二绝缘件215设置于第六壁2118和电极组件213之间，并与第六壁2118抵接。第一绝缘件214在第三方向W上的最大尺寸为e1，第二绝缘件215在第三方向W上的最大尺寸为e2，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.88，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。
(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e1-e2)/(W1*T1*K1)可以是0.88、0.89、0.90、0.91、0.92、0.93、0.94、0.95、0.96、0.97、0.98、0.99等中任意一者的点值或任意两者之间的范围值。
e1可以是0.3mm、0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm、1mm、1.1mm、1.2mm等中任意一者的点值或任意两者之间的范围值。
e2可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
在本实施例中，W1-a-1.6mm表示的含义是：在电极组件213与壳体2111的装配间隙取0.8mm时，沿第一方向U，外壳211的内部空间留给电极组件213的最大尺寸。T1-b-1.6mm表示的含义是：在电极组件213与壳体2111的装配间隙取0.8mm时，沿第二方向V，外壳211的内部空间留给电极组件213的最大尺寸。K1-c-e1-e2表示的含义是：在第五壁2117和电极组件213之间设置有与第五壁2117抵接的第一绝缘件214，并且第六壁2118和电极组件213之间设置有与第六壁2118抵接的第二绝缘件215时，沿第三方向W，外壳211的内部空间留给电极组件213的最大尺寸。第一绝缘件214可以是底托板，第二绝缘件215可以是下塑胶。
在本实施例中，(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.88，使得外壳211的内部留给电极组件213的空间增大，允许容纳体积更大的电极组件213，以使电池单体21的体积能量密度进一步得到提高。
在一些实施例中，电池单体21还包括第一绝缘件214和第二绝缘件215，第一绝缘件214设置于第五壁2117和电极组件213之间，并与第五壁2117抵接。第二绝缘件215设置于第六壁2118和电极组件213之间，并与第六壁2118抵接。第一绝缘件214在第三方向W上的最大尺寸为e1，第二绝缘件215在第三方向W上的最大尺寸为e2，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.85，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。
(W1-a-4mm)*(T1-b-4mm)*(K1-c-e1-e2)/(W1*T1*K1)可以是0.85、0.86、0.87、0.88、0.89、0.90、0.91、0.92、0.93、0.94、0.95、0.96、0.97、0.98、0.99等中任意一者的点值或任意两者之间的范围值。
e1可以是0.3mm、0.4mm、0.5mm、0.6mm、0.7mm、0.8mm、0.9mm、1mm、1.1mm、1.2mm等中任意一者的点值或任意两者之间的范围值。
e2可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
在本实施例中，W1-a-4mm表示的含义是：在电极组件213与壳体2111的装配间隙取2mm时，沿第一方向U，外壳211的内部空间留给电极组件213的最大尺寸。T1-b-4mm表示的含义是：在电极组件213与壳体2111的装配间隙取2mm时，沿第二方向V，外壳211的内部空间留给电极组件213的最大尺寸。K1-c-e1-e2表示的含义是：在第五壁2117和电极组件213之间设置有与第五壁2117抵接的第一绝缘件214，并且第六壁2118和电极组件213之间设置有与第六壁2118抵接的第二绝缘件215时，沿第三方向W，外壳211的内部空间留给电极组件213的最大尺寸。
在本实施例中，(W1-a-4mm)*(T1-b-4mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.85，使得外壳211的内部留给电极组件213的空间增大，允许容纳体积更大的电极组件213，以使电池单体21的体积能量密度进一步得到提高。
在一些实施例中，W1≥T1，第一方向U平行于箱体的长度方向X，第二方向V平行于箱体的宽度方向Y，第三方向W平行于箱体的高度方向Z。
作为示例，第一方向U为电池单体21的外壳211的长度方向，第二方向V为电池单体21的外壳211的宽度方向，第三方向W为电池单体21的外壳211的高度方向，使得外壳211的长度方向平行于箱体的长度方向X，外壳211的宽度方向平行于箱体的宽度方向Y，外壳211的高度方向平行于箱体的高度方向Z。
在壳体2111只有一端设置端盖2112且W1≥T1的情况下，将外壳211的端盖2112和第五壁2117沿箱体的高度方向Z相对设置，将外壳211的第一壁2113和第二壁2114沿箱体的长度方向X相对设置，并将外壳211的第三壁2115和第四壁2116沿箱体的宽度方向Y相对设置，有利于提高所有电池单体21在电池仓11内的体积占比。
在一些实施例中，请参照图22-图25，图22为本申请另一些实施例提供的电池单体21的轴测图；图23为图22所示的电池单体21的爆炸图；图24为图22所示的电池单体21沿UW平面剖切的剖视爆炸图；图25为图22所示的电池单体21沿VW平面剖切的剖视爆炸图。外壳211包括壳体2111和两个端盖2112，壳体2111具有沿第三方向W相对设置的两个开口，两个端盖2112分别盖合于两个开口，至少一个端盖2112设置有电极端子212。壳体2111包括一体成型的第一壁2113、第二壁2114、第三壁2115和第四壁2116，两个端盖2112分别为第五壁2117和第六壁2118。
在本实施例中，壳体2111为两端形成开口的空心结构，外壳211中的端盖2112为两个，两个端盖2112分别封闭壳体2111两端的开口。
在一些实施例中，请继续参照图24和图25，第一壁2113的厚度和第二壁2114的厚度均为a1，2*a1＝a；第三壁2115的厚度和第四壁2116的厚度均为b1，2*b1＝b；第五壁2117的厚度和第六壁2118的厚度为c1，2*c1＝c，c1＞a1，c1＞b1。0.5mm≤a1≤1.5mm，0.5≤b1≤1.5mm，1.0mm≤c1≤4mm。
为了减小电极组件213在装入壳体2111的过程中与壳体2111发生干涉的可能性，降低电极组件213受损的风险，在设计壳体2111时会为电极组件213留出一定的装配间隙(即，入壳间隙)，该装配间隙可以为0.8-2mm。
另外，为了降低电池单体21发生内部短路的可能性，可以在外壳211内部设置绝缘件，但绝缘件不可避免地会占用一部分外壳211的内部空间，从而导致留给电极组件213和电解液的空间减小。
在一些实施例中，电池单体21还包括第三绝缘件216和第四绝缘件217，第三绝缘件216设置于第五壁2117和电极组件213之间，并与第五壁2117抵接。第四绝缘件217设置于第六壁2118和电极组件213之间，并与第六壁2118抵接。第三绝缘件216在第三方向W上的最大尺寸为e3，第四绝缘件217在第三方向W上的最大尺寸为e4，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.88，2mm≤e3≤10mm，且2mm≤e4≤10mm。
(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e3-e4)/(W1*T1*K1)可以是0.88、0.89、0.9、0.91、0.92、0.93、0.94、0.95、0.96、0.97、0.98、0.99等中任意一者的点值或任意两者之间的范围值。
e3可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
e4可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
在本实施例中，W1-a-1.6mm表示的含义是：在电极组件213与壳体2111的装配间隙取0.8mm时，沿第一方向U，外壳211的内部空间留给电极组件213的最大尺寸。T1-b-1.6mm表示的含义是：在电极组件213与壳体2111的装配间隙取0.8mm时，沿第二方向V，外壳211的内部空间留给电极组件213的最大尺寸。K1-c-e3-e4表示的含义是：在第五壁2117和电极组件213之间设置有与第五壁2117抵接的第三绝缘件216，并且第六壁2118和电极组件213之间设置有与第六壁2118抵接的第四绝缘件217时，沿第三方向W，外壳211的内部空间留给电极组件213的最大尺寸。第三绝缘件216和第四绝缘件217均可以是下塑胶。
在本实施例中，W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.88，使得外壳211的内部留给电极组件213的空间增大，允许容纳体积更大的电极组件213，以使电池单体21的体积能量密度进一步得到提高。
在一些实施例中，电池单体21还包括第三绝缘件216和第四绝缘件217，第三绝缘件216设置于第五壁2117和电极组件213之间，并与第五壁2117抵接。第四绝缘件217设置于第六壁2118和电极组件213之间，并与第六壁2118抵接。第三绝缘件216在第三方向W上的最大尺寸为e3，第四绝缘件217在第三方向W上的最大尺寸为e4，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.85，2mm≤e3≤10mm，且2mm≤e4≤10mm。
(W1-a-4mm)*(T1-b-4mm)*(K1-c-e3-e4)/(W1*T1*K1)可以是0.85、0.86、0.87、0.88、0.89、0.90、0.91、0.92、0.93、0.94、0.95、0.96、0.97、0.98、0.99等中任意一者的点值或任意两者之间的范围值。
e3可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
e4可以是2mm、3mm、4mm、5mm、6mm、7mm、8mm、9mm、10mm等中任意一者的点值或任意两者之间的范围值。
在本实施例中，W1-a-4mm表示的含义是：在电极组件213与壳体2111的装配间隙取2mm时，沿第一方向U，外壳211的内部空间留给电极组件213的最大尺寸。T1-b-4mm表示的含义是：在电极组件213与壳体2111的装配间隙取2mm时，沿第二方向V，外壳211的内部空间留给电极组件213的最大尺寸。K1-c-e3-e4表示的含义是：在第五壁2117和电极组件213之间设置有与第五壁2117抵接的第三绝缘件216，并且第六壁2118和电极组件213之间设置有与第六壁2118抵接的第四绝缘件217时，沿第三方向W，外壳211的内部空间留给电极组件213的最大尺寸。
在本实施例中，(W1-a-4mm)*(T1-b-4mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.85，使得外壳211的内部留给电极组件213的空间增大，允许容纳体积更大的电极组件213，以使电池单体21的体积能量密度进一步得到提高。
在一些实施例中，W1≥T1，第一方向U平行于箱体的高度方向Z，第二方向V平行于箱体的宽度方向Y，第三方向W平行于箱体的长度方向X。
作为示例，第一方向U为电池单体21的外壳211的长度方向，第二方向V为电池单体21的外壳211的宽度方向，第三方向W为电池单体21的外壳211的高度方向，使得外壳211的长度方向平行于箱体的高度方向Z，外壳211的宽度方向平行于箱体的宽度方向Y，外壳211的高度方向平行于箱体的长度方向X。
在壳体2111两端均设置端盖2112且W1≥T1的情况下，将外壳211的两个端盖2112沿箱体的长度方向X布置，将外壳211的第一壁2113和第二壁2114沿箱体的高度方向Z布置，并将外壳211的第三壁2115和第四壁2116沿箱体的宽度方向Y相对设置，有利于提高所有电池单体21在电池仓11内的体积占比。
在一些实施例中，0.003m3≤W1*T1*K1≤0.04m3。
W1*T1*K1可以是0.003m3、0.005m3、0.008m3、0.01m3、0.013m3、0.015m3、0.018m3、0.02m3、0.023m3、0.025m3、0.028m3、0.03m3、0.033m3、0.035m3、0.038m3、0.04m3等中任意一者的点值或任意两者之间的范围值。
在本实施例中，W1*T1*K1≥0.003m3，使得在满足外壳211的内部空间的体积与外壳211的体积的比值在0.9以上的情况下，外壳211的壁厚不至于太小，从而能够满足对外壳211的结构强度要求；W1*T1*K1≤0.04m3，可以将电池单体21的容量和电流控制在合适的范围内，降低电路中的过流元件损伤的风险。
在一些实施例中，0.0032m3≤W1*T1*K1≤0.032m3。
在本实施例中，W1*T1*K1可以是0.0032m3、0.0035m3、0.0042m3、0.005m3、0.006m3、0.007m3、0.008m3、0.009m3、0.01m3、0.011m3、0.012m3、0.013m3、0.014m3、0.015m3、0.016m3、0.017m3、0.018m3、0.019m3、0.02m3、0.021m3、0.022m3、0.023m3、0.024m3、0.025m3、0.026m3、0.027m3、0.028m3、0.029m3、0.03m3、0.031m3、0.032m3等中任意一者的点值或任意两者之间的范围值。
在本实施例中，0.0032m3≤W1*T1*K1≤0.032m3，兼顾了外壳211的结构强度和电池单体21的发热量要求，进一步提高外壳211的结构强度，以及降低电路中的过流元件损伤的风险。
在一些实施例中，0.00372m3≤W1*T1*K1≤0.0125m3。
在本实施例中，W1*T1*K1可以是0.00372m3、0.0039m3、0.0042m3、0.0046m3、0.0048m3、0.005m3、0.0052m3、0.0058m3、0.006m3、0.0062m3、0.0068m3、0.007m3、0.0072m3、0.0078m3、0.008m3、0.0082m3、0.0088m3、0.009m3、0.0092m3、0.0098m3、0.01m3、0.0102m3、0.0108m3、0.011m3、0.0112m3、0.0118m3、0.012m3、0.0125m3等中任意一者的点值或任意两者之间的范围值。
在一些实施例中，0.004m3≤W1*T1*K1≤0.006m3。
在本实施例中，可以是0.004m3、0.0041m3、0.0042m3、0.0043m3、0.0044m3、0.0045m3、0.0046m3、0.0047m3、0.0048m3、0.0049m3、0.005m3、0.0051m3、0.0052m3、0.0053m3、0.0054m3、0.0055m3、0.0056m3、0.0057m3、0.0058m3、0.0059m3、0.006m3等中任意一者的点值或任意两者之间的范围值。
在一些实施例中，电池单体21的正极材料包括含锂磷酸盐，电池单体21的容量为C，满足：C≥350Ah，C/((W1-a)*(T1-b)*(K1-c))≥118Ah/L。
含锂磷酸盐包括但不限于：磷酸铁锂(如LiFePO4(也可以简称为LFP))、磷酸铁锂与碳的复合材料、磷酸锰锂(如LiMnPO4)、磷酸锰锂与碳的复合材料、磷酸锰铁锂、磷酸锰铁锂与碳的复合材料中的至少一种。
在电池单体21的正极材料包括含锂磷酸盐，且C≥350Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在118Ah/L以上，可以提高电池单体21的外壳211的内部空间的体积占比，有利于实现电池单体21的外壳211的内部空间的体积与外壳211的体积的比值在0.9以上。
在一些实施例中，电池单体21的正极材料包括锂过渡金属氧化物，电池单体21的容量为C，满足：C≥650Ah，C/((W1-a)*(T1-b)*(K1-c))≥190Ah/L。
锂过渡金属氧化物包括但不限于：锂钴氧化物(如LiCoO2)、锂镍氧化物(如LiNiO2)、锂锰氧化物 (如LiMnO2、LiMn2O4)、锂镍钴氧化物、锂锰钴氧化物、锂镍锰氧化物、锂镍钴锰氧化物(如LiNi1/3Co1/3Mn1/3O2(也可以简称为NCM333)、LiNi0.5Co0.2Mn0.3O2(也可以简称为NCM523)、LiNi0.5Co0.25Mn0.25O2(也可以简称为NCM211)、LiNi0.6Co0.2Mn0.2O2(也可以简称为NCM622)、LiNi0.8Co0.1Mn0.1O2(也可以简称为NCM811)、锂镍钴铝氧化物(如LiNi0.85Co0.15Al0.05O2)及其改性化合物等中的至少一种。
在电池单体21的正极材料包括锂过渡金属氧化物，且C≥650Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在190Ah/L以上，可以提高电池单体21的外壳211的内部空间的体积占比，有利于实现电池单体21的外壳211的内部空间的体积与外壳211的体积的比值在0.9以上。
在一些实施例中，电池单体21为钠离子电池单体21，电池单体21的容量为C，满足：C≥260Ah，C/((W1-a)*(T1-b)*(K1-c))≥87Ah/L。
在电池单体21为钠离子电池单体21，且C≥260Ah的情况下，将C/((W1-a)*(T1-b)*(K1-c))设置在87Ah/L以上，可以提高电池单体21的外壳211的内部空间的体积占比，有利于实现电池单体21的外壳211的内部空间的体积与外壳211的体积的比值在0.9以上。
需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的特征可以相互组合。
以上实施例仅用以说明本申请的技术方案，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (74)

  1. 一种储能装置，包括：
    箱体，具有电池仓；
    多个电池单体，容纳于所述电池仓内，所述电池单体包括外壳和电极端子，所述电极端子设置于所述外壳；
    其中，所述电池仓的体积为V1，多个所述电池单体的所述外壳的体积之和为V2，0.4≤V2/V1≤0.95。
  2. 如权利要求1所述的储能装置，其中，0.5≤V2/V1≤0.85；可选地，0.52≤V2/V1≤0.75。
  3. 如权利要求1或2所述的储能装置，其中，每个所述电池单体的所述外壳的体积均为V3，所述电池仓内的所述电池单体的个数为N1，满足：V2＝V3*N1。
  4. 如权利要求3所述的储能装置，其中，0.0001≤V3/V1≤0.00025；可选地，0.00015≤V3/V1≤0.0002。
  5. 如权利要求3或4所述的储能装置，其中，0.0026m3≤V3≤0.008m3；可选地，0.004m3≤V3≤0.006m3。
  6. 如权利要求1-5中任一项所述的储能装置，其中，所述箱体的体积为V，满足：0.45≤V1/V≤0.75；可选地，0.55≤V1/V≤0.65。
  7. 如权利要求6所述的储能装置，其中，20m3≤V≤80m3；可选地，35m3≤V≤50m3。
  8. 如权利要求1-7中任一项所述的储能装置，其中，所述电池仓内容纳有沿所述箱体的长度方向排布的多个所述电池单体；
    沿所述长度方向，所述电池仓的尺寸为L1，所述电池仓内排布的多个所述电池单体的所述外壳的尺寸之和为L2，满足：0.6≤L2/L1≤0.95；可选地，0.75≤L2/L1≤0.9。
  9. 如权利要求8所述的储能装置，其中，沿所述长度方向，每个所述电池单体的所述外壳的尺寸均为L3，所述电池仓内排布有N2个所述电池单体，满足：L2＝L3*N2。
  10. 如权利要求9所述的储能装置，其中，0.03≤L3/L1≤0.12；可选地，0.055≤L3/L1≤0.09。
  11. 如权利要求9或10所述的储能装置，其中，0.17m≤L3≤0.6m；可选地，0.2m≤L3≤0.45m。
  12. 如权利要求8-11中任一项所述的储能装置，其中，沿所述长度方向，所述箱体的尺寸为L，满足：0.65≤L1/L≤0.95；可选地，0.75≤L1/L≤0.9。
  13. 如权利要求12所述的储能装置，其中，3m≤L≤9m；可选地，5m≤L≤7m。
  14. 如权利要求1-13中任一项所述的储能装置，其中，所述电池仓内容纳有沿所述箱体的宽度方向排布的多个所述电池单体；
    沿所述宽度方向，所述电池仓的尺寸为D1，所述电池仓内排布的多个所述电池单体的所述外壳的尺寸之和为D2，满足：0.6≤D2/D1≤0.95；可选地，0.75≤D2/D1≤0.9。
  15. 如权利要求14所述的储能装置，其中，沿所述宽度方向，每个所述电池单体的所述外壳的尺寸均为D3，所述电池仓内排布有N3个所述电池单体，满足：D2＝D3*N3。
  16. 如权利要求15所述的储能装置，其中，0.02≤D3/D1≤0.05；可选地，0.032≤D3/D1≤0.04。
  17. 如权利要求15或16所述的储能装置，其中，0.04m≤D3≤0.12m；可选地，0.06m≤D3≤0.08m。
  18. 如权利要求14-17中任一项所述的储能装置，其中，沿所述宽度方向，所述箱体的尺寸为D，满足：0.65≤D1/D≤0.99；可选地，0.75≤D1/D≤0.92。
  19. 如权利要求18所述的储能装置，其中，1.5m≤D≤3.5m；可选地，2m≤D≤3m。
  20. 如权利要求1-19中任一项所述的储能装置，其中，所述电池仓内容纳有沿箱体的高度方向排布的多个所述电池单体；
    沿所述高度方向，所述电池仓的尺寸为H1，所述电池仓内排布的多个所述电池单体的所述外壳的尺寸之和为H2，满足：0.6≤H2/H1≤0.95；可选地，0.7≤H2/H1≤0.9。
  21. 如权利要求20所述的储能装置，其中，沿所述高度方向，每个所述电池单体的所述外壳的尺寸均为H3，所述电池仓内排布有N4个所述电池单体，满足：H2＝H3*N4。
  22. 如权利要求21所述的储能装置，其中，0.07≤H3/H1≤0.12；可选地，0.08≤H3/H1≤0.1。
  23. 如权利要求20或21所述的储能装置，其中，0.17m≤H3≤0.6m；可选地，0.2m≤H3≤0.45m。
  24. 如权利要求20-23中任一项所述的储能装置，其中，沿所述高度方向，所述箱体的尺寸为H，满足：0.55≤H1/H≤0.85；可选地，0.65≤H1/H≤0.78。
  25. 如权利要求24所述的储能装置，其中，1.5m≤H≤3.5m；可选地，2m≤H≤3m。
  26. 如权利要求1-25中任一项所述的储能装置，其中，所述电池仓内容纳有至少一个所述电池，所述电池包括多个所述电池单体。
  27. 如权利要求26所述的储能装置，其中，所述电池仓内容纳有沿所述箱体的长度方向排布的多个所述电池；
    沿所述长度方向，所述电池仓的尺寸为L1，所述电池仓内排布的多个所述电池的尺寸之和为L4，满足：0.7≤L4/L1≤0.96；可选地，0.78≤L4/L1≤0.91。
  28. 如权利要求27所述的储能装置，其中，沿所述长度方向，每个所述电池的尺寸为L5，所述电池仓内排布有N5个所述电池，满足：L4＝L5*N5。
  29. 如权利要求28所述的储能装置，其中，1m≤L5≤1.5m，2≤N5≤6。
  30. 如权利要求26所述的储能装置，其中，沿所述箱体的长度方向，所述电池仓仅容纳一个所述电池，所述电池仓的尺寸为L1，所述电池的尺寸为L5，满足：0.8≤L5/L1≤0.99；可选地，0.85≤L5/L1≤0.93。
  31. 如权利要求30所述的储能装置，其中，4m≤L5≤8m；可选地，5.5m≤L5≤6.8m。
  32. 如权利要求26-31中任一项所述的储能装置，其中，所述电池仓内容纳有沿所述箱体的宽度方向排布的多个所述电池；
    沿所述宽度方向，所述电池仓的尺寸为D1，所述电池仓内排布的多个所述电池的尺寸之和为D4，满足：0.7≤D4/D1≤0.96；可选地，0.78≤D4/D1≤0.91。
  33. 如权利要求32所述的储能装置，其中，沿所述宽度方向，每个所述电池的尺寸为D5，所述电池仓内排布有N6个所述电池，满足：D4＝D5*N6。
  34. 如权利要求33所述的储能装置，其中，1m≤D5≤1.5m，2≤N6≤3。
  35. 如权利要求26-31中任一项所述的储能装置，其中，沿所述箱体的宽度方向，所述电池仓仅容纳一个所述电池，所述电池仓的尺寸为D1，所述电池的尺寸为D5，满足：0.8≤D5/D1≤0.99；可选地，0.85≤D5/D1≤0.93。
  36. 如权利要求35所述的储能装置，其中，1.5m≤D5≤2.5m；可选地，1.7m≤D5≤2.3m。
  37. 如权利要求26-36中任一项所述的储能装置，其中，所述电池仓内容纳有沿所述箱体的高度方向排布的多个所述电池；
    沿所述高度方向，所述电池仓的尺寸为H1，所述电池仓内排布的多个所述电池的尺寸之和为H4，满足：0.6≤H4/H1≤0.99；可选地，0.7≤H4/H1≤0.92。
  38. 如权利要求37所述的储能装置，其中，沿所述高度方向，每个所述电池的尺寸为H5，所述电池仓内排布有N7个所述电池，满足：H4＝H5*N7。
  39. 如权利要求38所述的储能装置，其中，0.2m≤H5≤0.3m，2≤N7≤10。
  40. 如权利要求26-36中任一项所述的储能装置，其中，沿所述箱体的高度方向，所述电池仓仅容纳一个所述电池，所述电池仓的尺寸为H1，所述电池的尺寸为H5，满足：0.8≤H5/H1≤0.99；可选地，0.85≤H5/H1≤0.93。
  41. 如权利要求40所述的储能装置，其中，1.5m≤H5≤2.5m；可选地，1.7m≤H5≤2.3m。
  42. 如权利要求26所述的储能装置，其中，所述电池仓包括多个子仓，多个子仓沿所述箱体的长度方向排布，每个所述子仓均容纳有至少一个所述电池。
  43. 如权利要求42所述的储能装置，其中，所述子仓的体积为V4，所述子仓内的所述电池的体积之和为V5，满足；0.75≤V5/V4≤0.95；可选地，0.82≤V5/V4≤0.9。
  44. 如权利要求42或43所述的储能装置，其中，沿所述箱体的长度方向，所述子仓仅容纳一个所述电池。
  45. 如权利要求44所述的储能装置，其中，沿所述长度方向，所述子仓的尺寸为L6，所述电池的尺寸L5，满足：0.85≤L5/L6≤0.99；可选地，0.88≤L5/L6≤0.95。
  46. 如权利要求42-45中任一项所述的储能装置，其中，沿所述箱体的宽度方向，所述子仓仅容纳一个所述电池。
  47. 如权利要求42-46中任一项所述的储能装置，其中，沿所述箱体的高度方向，所述子仓容纳有多个所述电池。
  48. 如权利要求42-47中任一项所述的储能装置，其中，所述子仓的个数小于等于4。
  49. 如权利要求26-48中任一项所述的储能装置，其中，所述电池的体积为V6，所述电池的多个所述电池单体的所述外壳的体积之和为V7，满足：0.5≤V7/V6≤0.8；可选地，0.58≤V7/V6≤0.7。
  50. 如权利要求49所述的储能装置，其中，所述电池的电池单体的个数为N8，每个所述电池单体的所述外壳的体积为V3，满足：V7＝V3*N8。
  51. 如权利要求26-50中任一项所述的储能装置，其中，所述电池包括p*q个所述电池单体，p*q个所述电池单体呈p行q列排布，每行所述电池单体沿所述箱体的长度方向设置，每列所述电池单体沿所述箱体的宽度方向设置，p和q均为正整数。
  52. 如权利要求51所述的储能装置，其中，在每行所述电池单体中，q个所述电池单体的所述外壳沿所述长度方向的尺寸之和为L7，所述电池沿所述长度方向的尺寸为L5，满足：0.8≤L7/L5≤0.95；可选地，0.85≤L7/L5≤0.9。
  53. 如权利要求52所述的储能装置，其中，沿所述长度方向，每个所述电池单体的所述外壳的尺寸均为L3，满足：L3＝L7/q，0.17m≤L3≤0.6m，1≤q≤5。
  54. 如权利要求53所述的储能装置，其中，q＝4，0.2m≤L3≤0.3m。
  55. 如权利要求53所述的储能装置，其中，q＝2，0.4m≤L3≤0.6m。
  56. 如权利要求51-55中任一项所述的储能装置，其中，在每列所述电池单体中，p个所述电池单体的所述外壳沿所述宽度方向的尺寸之和为D7，所述电池沿所述宽度方向的尺寸为D5，满足：0.75≤D7/D5≤0.95；可选地，0.82≤D7/D5≤0.9。
  57. 如权利要求56所述的储能装置，其中，沿所述宽度方向，每个所述电池单体的所述外壳的尺寸均为D3，满足：D3＝D7/p，0.04m≤D3≤0.12m，20≤p≤30。
  58. 如权利要求57所述的储能装置，其中，0.06m≤D3≤0.08m，24≤p≤28。
  59. 如权利要求51-58中任一项所述的储能装置，其中，所述电池单体的所述外壳沿所述箱体的高度方向的尺寸为H3，所述电池沿所述高度方向的尺寸为H5，满足：0.75≤H3/H5≤0.95；可选地，0.82≤H3/H5≤0.9。
  60. 如权利要求59所述的储能装置，其中，0.17m≤H3≤0.6m；可选地，0.2m≤H3≤0.45m。
  61. 如权利要求1-60中任一项所述的储能装置，其中，所述电池单体还包括至少一个电极组件，所述电极组件容纳于所述外壳内；
    所述外壳呈直平行六面体状，所述外壳在第一方向上的尺寸为W1，所述外壳在第二方向上的尺寸为T1，所述 外壳在第三方向上的尺寸为K1，所述第一方向、所述第二方向和所述第三方向三者中的一者平行于所述箱体的长度方向，另一者平行于所述箱体的宽度方向，再一者平行于所述箱体的高度方向；
    所述外壳包括沿所述第一方向相对设置的第一壁和第二壁、沿所述第二方向相对设置的第三壁和第四壁、沿所述第三方向相对设置的第五壁和第六壁，所述第一壁和所述第二壁的厚度之和为a，所述第三壁和所述第四壁的厚度之和为b，所述第五壁和所述第六壁的厚度之和为c，满足：(W1-a)*(T1-b)*(K1-c)/(W1*T1*K1)≥0.9。
  62. 如权利要求61所述的储能装置，其中，(W1-a)/W1≥0.97，(T1-b)/T1≥0.965，且(K1-c)/K1≥0.965。
  63. 如权利要求61或62所述的储能装置，其中，所述外壳包括壳体和端盖，所述壳体具有开口，所述端盖盖合于所述开口，所述端盖设置有所述电极端子；
    所述壳体包括一体成型的所述第一壁、所述第二壁、所述第三壁、所述第四壁和所述第五壁，所述端盖为所述第六壁。
  64. 如权利要求63所述的储能装置，其中，所述电池单体还包括第一绝缘件和第二绝缘件，所述第一绝缘件设置于所述第五壁和所述电极组件之间，并与所述第五壁抵接；所述第二绝缘件设置于所述第六壁和所述电极组件之间，并与所述第六壁抵接；
    所述第一绝缘件在所述第三方向上的最大尺寸为e1，所述第二绝缘件在所述第三方向上的最大尺寸为e2，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.88，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。
  65. 如权利要求63或64所述的储能装置，其中，所述电池单体还包括第一绝缘件和第二绝缘件，所述第一绝缘件设置于所述第五壁和所述电极组件之间，并与所述第五壁抵接；所述第二绝缘件设置于所述第六壁和所述电极组件之间，并与所述第六壁抵接；
    所述第一绝缘件在所述第三方向上的最大尺寸为e1，所述第二绝缘件在所述第三方向上的最大尺寸为e2，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e1-e2)/(W1*T1*K1)≥0.85，0.3mm≤e1≤1.2mm，且2mm≤e2≤10mm。
  66. 如权利要求63-65中任一项所述的储能装置，其中，W1≥T1，所述第一方向平行于所述箱体的长度方向，所述第二方向平行于所述箱体的宽度方向，所述第三方向平行于所述箱体的高度方向。
  67. 如权利要求61或62所述的储能装置，其中，所述外壳包括壳体和两个端盖，所述壳体具有沿所述第三方向相对设置的两个开口，两个所述端盖分别盖合于两个所述开口，至少一个所述端盖设置有所述电极端子；
    所述壳体包括一体成型的所述第一壁、所述第二壁、所述第三壁和所述第四壁，两个所述端盖分别为所述第五壁和所述第六壁。
  68. 如权利要求67所述的储能装置，其中，所述电池单体还包括第三绝缘件和第四绝缘件，所述第三绝缘件设置于所述第五壁和所述电极组件之间，并与所述第五壁抵接；所述第四绝缘件设置于所述第六壁和所述电极组件之间，并与所述第六壁抵接；
    所述第三绝缘件在所述第三方向上的最大尺寸为e3，所述第四绝缘件在所述第三方向上的最大尺寸为e4，满足：(W1-a-1.6mm)*(T1-b-1.6mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.88，2mm≤e3≤10mm，且2mm≤e4≤10mm。
  69. 如权利要求67或68所述的储能装置，其中，所述电池单体还包括第三绝缘件和第四绝缘件，所述第三绝缘件设置于所述第五壁和所述电极组件之间，并与所述第五壁抵接；所述第四绝缘件设置于所述第六壁和所述电极组件之间，并与所述第六壁抵接；
    所述第三绝缘件在所述第三方向上的最大尺寸为e3，所述第四绝缘件在所述第三方向上的最大尺寸为e4，满足：(W1-a-4mm)*(T1-b-4mm)*(K1-c-e3-e4)/(W1*T1*K1)≥0.85，2mm≤e3≤10mm，且2mm≤e4≤10mm。
  70. 如权利要求67-69中任一项所述的储能装置，其中，W1≥T1，所述第一方向平行于所述箱体的高度方向，所述第二方向平行于所述箱体的宽度方向，所述第三方向平行于所述箱体的长度方向。
  71. 如权利要求61-70中任一项所述的储能装置，其中，0.003m3≤W1*T1*K1≤0.04m3；可选地，0.0032m3≤W1*T1*K1≤0.032m3；可选地，0.00372m3≤W1*T1*K1≤0.0125m3；可选地，0.004m3≤W1*T1*K1≤0.006m3。
  72. 如权利要求61-71中任一项所述的储能装置，其中，所述电池单体的正极材料包括含锂磷酸盐，所述电池单体的容量为C，满足：C≥350Ah，C/((W1-a)*(T1-b)*(K1-c))≥118Ah/L。
  73. 如权利要求61-71中任一项所述的储能装置，其中，所述电池单体的正极材料包括锂过渡金属氧化物，所述电池单体的容量为C，满足：C≥650Ah，C/((W1-a)*(T1-b)*(K1-c))≥190Ah/L。
  74. 如权利要求61-71中任一项所述的储能装置，其中，所述电池单体为钠离子电池单体，所述电池单体的容量为C，满足：C≥260Ah，C/((W1-a)*(T1-b)*(K1-c))≥87Ah/L。
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