CN114678644A - Battery pack and energy storage system - Google Patents
Battery pack and energy storage system Download PDFInfo
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- CN114678644A CN114678644A CN202111410519.3A CN202111410519A CN114678644A CN 114678644 A CN114678644 A CN 114678644A CN 202111410519 A CN202111410519 A CN 202111410519A CN 114678644 A CN114678644 A CN 114678644A
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- battery pack
- housing
- circuit board
- conductive
- shell
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- 238000004146 energy storage Methods 0.000 title claims abstract description 32
- 239000000758 substrate Substances 0.000 description 9
- 238000012423 maintenance Methods 0.000 description 5
- 238000012544 monitoring process Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- 229910052802 copper Inorganic materials 0.000 description 3
- 239000010949 copper Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 description 1
- FKNQFGJONOIPTF-UHFFFAOYSA-N Sodium cation Chemical compound [Na+] FKNQFGJONOIPTF-UHFFFAOYSA-N 0.000 description 1
- JDZCKJOXGCMJGS-UHFFFAOYSA-N [Li].[S] Chemical compound [Li].[S] JDZCKJOXGCMJGS-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- VVNXEADCOVSAER-UHFFFAOYSA-N lithium sodium Chemical compound [Li].[Na] VVNXEADCOVSAER-UHFFFAOYSA-N 0.000 description 1
- 229910001425 magnesium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 229910001415 sodium ion Inorganic materials 0.000 description 1
Images
Classifications
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- 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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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- 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
-
- 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
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- 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
- H01M50/258—Modular batteries; Casings provided with means for assembling
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- 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
- H01M50/284—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders with incorporated circuit boards, e.g. printed circuit boards [PCB]
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- 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
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- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/503—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing characterised by the shape of the interconnectors
-
- 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
- H01M50/502—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing
- H01M50/519—Interconnectors for connecting terminals of adjacent batteries; Interconnectors for connecting cells outside a battery casing comprising printed circuit boards [PCB]
Abstract
The application discloses group battery and energy storage system. The battery pack comprises a first shell, a battery pack body, a first circuit board, a switching assembly, a second shell and a third shell. The second shell and the third shell seal a first opening of the first shell, the first circuit board is fixed on the second shell, the first circuit board is electrically connected to the electric core group arranged in the first shell through the first conductive piece and the second conductive piece of the switching assembly, the second conductive piece is arranged on the first circuit board, the third shell can be disassembled to expose the connecting part of the first conductive piece and the second conductive piece, after the connection of the first conductive piece and the second conductive piece is released, the second shell, the first circuit board and the second conductive piece are disassembled from the first shell together, and the first circuit board and the structure arranged in the first shell are overhauled. When installing a plurality of group battery on energy storage system's support body, can directly overhaul the group battery after dismantling second casing, third casing, need not to pull down the group battery is whole from the support body.
Description
Technical Field
The application relates to the technical field of batteries, in particular to a battery pack and an energy storage system.
Background
With the development of new energy, new energy is adopted as power in more and more fields. The battery is applied to the field of energy storage systems due to the advantages of high energy density, cyclic charging, safety, environmental protection and the like. In the use, a large amount of batteries closely arrange in a space, and operating condition is complicated changeable, causes the heat production inhomogeneous easily, the difference in temperature is great between the battery, voltage unstability scheduling problem, often needs to overhaul the battery, consequently is necessary to optimize the battery structure, improves the convenience of overhauing the operation.
Disclosure of Invention
The embodiment of the application provides a group battery and energy storage system, can solve the inconvenient problem of group battery dismouting maintenance.
In a first aspect, an embodiment of the present application provides a battery pack, where the battery pack includes a first housing, a battery pack, a first circuit board, a switching assembly, a second housing, and a third housing; the first shell is provided with a first space and a first opening communicated with the first space; the electric core group is arranged in the first space; the first circuit board part is arranged in the first space, and the first circuit board and the electric core group are oppositely arranged along a first direction; the switching assembly comprises a first conductive piece and a second conductive piece detachably connected with the first conductive piece, the first conductive piece is electrically connected with the second conductive piece, the first conductive piece is electrically connected with the electric core group, and the second conductive piece is arranged on the first circuit board and is electrically connected with the first circuit board; the first circuit board is arranged on the second shell, and the second shell is detachably connected to the first shell; the third housing is detachably connected to the first housing or the second housing, a projection of the third housing covers a projection of a connecting portion of the first conductive member and the second conductive member along the first direction, and the second housing and the third housing close the first opening.
In some exemplary embodiments, the second conductive member extends from the first circuit board to protrude out of the second housing, and a portion of the second conductive member protruding out of the second housing is electrically connected to the first conductive member.
Optionally, the first conductive component and the second conductive component each include an elastic bending portion, and the elastic bending portions of the first conductive component and the second conductive component abut against each other, so that the first conductive component and the second conductive component are electrically connected; or the butt joint part of the first conductive piece and the second conductive piece is provided with a threaded hole, and a screw is arranged in the threaded hole to lock and fix the first conductive piece and the second conductive piece to realize electric connection.
In some exemplary embodiments, the battery pack includes a first electrical terminal and a second electrical terminal with opposite polarities, the first electrical terminal is electrically connected to the battery pack, the second electrical terminal is electrically connected to the first circuit board, and a projection of the first electrical terminal is separated from a projection of the second housing along a first direction. The first electrical end comprises at least one first connecting end, the second electrical end comprises at least one second connecting end, and the first connecting end and the second connecting end are respectively electrically connected with an external circuit. Optionally, the first electrical end includes two first connection ends, and the second electrical end includes two second connection ends.
In some exemplary embodiments, the second electrical terminal is disposed in the second housing and electrically connected to the first circuit board. The first circuit board is a Battery Management System (BMS) circuit board.
In some exemplary embodiments, the adapter assembly further includes a third conductive member, one end of the third conductive member is connected to the second electrical end, and the other end of the third conductive member is connected to the first circuit board.
In some exemplary embodiments, the second housing includes a first main housing and a first sub-housing, the first main housing is provided with a second opening, the second electrical terminal includes a conductive element, a projection of the conductive element overlaps a projection of the second opening along a first direction, and the first sub-housing closes the second opening.
In some exemplary embodiments, the third housing includes a second main housing and a second sub-housing, the second main housing is provided with a third opening, the first electrical end includes a conductive element, a projection of the second conductive element overlaps a projection of the third opening along the first direction, and the second sub-housing closes the third opening.
In some exemplary embodiments, the switching assembly further includes a fourth conductive member, one end of the fourth conductive member is connected to the first electrical end, and the other end of the fourth conductive member is electrically connected to the electric core assembly.
In some exemplary embodiments, the battery pack includes a plurality of battery cells, each of the battery cells includes a main portion and a first electrode and a second electrode extending from the main portion, and the battery pack further includes a first structural member located between the first circuit board and the main portion along the first direction.
In some exemplary embodiments, the plurality of electric cells comprises a first electric core group and a second electric core group, the first electric core group and the second electric core group are arranged in a stacking manner along a second direction, and the second direction is perpendicular to the first direction; the second shell is arranged opposite to the first electric core group along the first direction, and the first structural component is positioned between the first circuit board and the main body part of the first electric core group; along the first direction, the third casing is arranged opposite to the second electric core group, and the battery pack further comprises a second structural member positioned between the third casing and the main body part of the second electric core group.
In some exemplary embodiments, the first structural member and the second structural member are respectively fixed to the first housing, and the first structural member and the second structural member are disposed in the first space.
In some exemplary embodiments, the battery pack further includes a connection assembly, where the connection assembly includes an insulation sheet and a plurality of bonding strips disposed on opposite sides of the insulation sheet, and the bonding strips are adhesively connected to the main body portions of the plurality of battery cells.
In some exemplary embodiments, the first electrode and the second electrode are oppositely disposed along a third direction, two of the first direction, the second direction and the third direction are perpendicular to each other, the battery pack includes a first adapter plate and a second adapter plate that are oppositely disposed along the third direction, the first adapter plate is electrically connected to the first electrode of the electric core, the second adapter plate is electrically connected to the second electrode of the electric core, one end of the first conductive member is connected to the second adapter plate, and the other end of the first conductive member is connected to the second conductive member.
Optionally, each of the first interposer and the second interposer includes a substrate, a conductive trace disposed on the substrate, and a conductive sheet disposed on the substrate, and the conductive sheet is electrically connected to the conductive trace; the conducting strip of the first adapter plate is electrically connected to the first electrode, the conducting strip of the second adapter plate is electrically connected to the second electrode, and one end of the first conducting strip is connected to one of the conducting strips of the second adapter plate.
In a second aspect, an embodiment of the present application provides an energy storage system, which includes a frame body and a battery pack as described above, where the number of the battery packs is at least one, and the battery pack is disposed on the frame body.
In some exemplary embodiments, the first housing includes a first flange and a second flange, the second flange is disposed near the first opening, the second flange is detachably coupled to the second housing and the third housing, the first flange is located outside the first space, and the first flange is coupled to the frame body in a second direction perpendicular to the first direction.
Based on group battery and energy storage system of this application embodiment, can realize pulling down the third casing and expose the connecting point of first electrically conductive piece and the electrically conductive piece of second, remove the first electrically conductive piece of being connected back with the electrically conductive piece of second, pull down second casing, first circuit board and the electrically conductive piece of second from first casing together, overhaul first circuit board and to being located the structure in first casing. When installing a plurality of group batteries on energy storage system's support body, can directly overhaul the group battery after demolising second casing, third casing, need not to pull down the group battery from the support body.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic perspective view of an energy storage system according to an embodiment of the present application;
fig. 2 is a schematic perspective view illustrating a battery pack according to an embodiment of the present application;
FIG. 3 is a schematic illustration of a plurality of battery pack connections within an energy storage system according to an embodiment of the present disclosure;
fig. 4 is an assembly structure view illustrating a battery pack according to an embodiment of the present application;
fig. 5 is a schematic perspective view illustrating a first electric core set and a second electric core set according to an embodiment of the present application;
fig. 6 is a front view of a second conductive member connected to a first conductive member according to an embodiment of the present application;
FIG. 7 is a schematic structural diagram illustrating a first circuit board mounted to a second housing according to an embodiment of the present disclosure;
fig. 8 is a schematic perspective view illustrating a stack of the first and second electric core sets according to an embodiment of the present application;
FIG. 9 is an exploded view of an electrode terminal according to an embodiment of the present application;
fig. 10 is a schematic perspective view of a battery cell according to an embodiment of the present application;
fig. 11 is a side view of a first conductive member coupled to a cell according to an embodiment of the present application;
fig. 12 is a schematic perspective view illustrating an arrangement of a first structural member corresponding to a first electric core assembly and a second structural member corresponding to a second electric core assembly according to an embodiment of the present application.
Description of the drawings:
10. an energy storage system; 11. a frame body; 12. a battery pack; 200. the electric core group; 210. an electric core; 211. a first electrode; 212. a second electrode; 213. a main body portion; 201. a first electric core group; 202. a first electric core group; 310. a first housing; 310a, a first space; 310b, a first opening; 311. a first wall; 312. a second wall; 313. a second flange; 314. a first flange; 320. a second housing: 321. a first main housing; 322. a first sub-housing; 320a, a second opening; 330. a third housing; 331. a second main housing; 332. a second sub-housing; 330a, a third opening; 410. a first electrical terminal; 411. a first connection end; 420. a second electrical terminal; 421. a second connection end; 400a, a first bus connection end; 400b, a second general connection end; 401. a base; 401a, a first groove; 401b, a first base opening; 401c, a second base opening; 401d, a first protrusion; 401e, a second protrusion; 402. a conductive element; 402a, a first section; 402b, a transition section; 510. a first conductive member; 520. a second conductive member; 530. a fourth conductive member; 540. a third conductive member; 550. a fifth conductive member; 610. a first circuit board; 620. a first transfer plate; 630. a second adapter plate; 601. a substrate; 603. a conductive sheet; 700. an acquisition port; 800. a connecting assembly; 810. an insulating sheet; 820. bonding the strips; 910. a connecting member; 920. a first mounting plate; 930. a second mounting plate; 940. a third structural member; A. a first direction; B. a second direction; C. and a third direction.
Detailed Description
In order to make the objects, technical solutions and advantages of the present application more clearly understood, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of and not restrictive on the broad application.
The energy storage system referred to in the embodiments of the present application refers to an energy storage module including a plurality of battery packs to store electric energy. The energy storage system generally further comprises a frame body for mounting the plurality of battery packs, so that the plurality of battery packs can be orderly arranged, and the energy storage system can be conveniently transported and overhauled.
A battery pack refers to a single physical module that includes one or more cells to provide higher voltage and capacity. A battery pack generally includes a case for enclosing one or more cells. The box can reduce the influence of other foreign matters on the charging or discharging of the battery cell.
The battery cell may include a lithium ion battery cell, a lithium sulfur battery cell, a sodium lithium ion battery cell, a sodium ion battery cell, a magnesium ion battery cell, or the like, which is not limited in this application. The battery cell can be a cylinder, a flat body, a cuboid or other shapes, and the like, and the embodiment of the application is not limited to the above. The cells are generally divided into three types according to the packaging mode: cylindricality electric core, square electric core of square body and soft-packaged electric core, this application embodiment is also not limited to this.
A large number of battery packs in the energy storage system are closely arranged in a space, and a monitoring module is required to be arranged to detect the operation condition of the battery packs, for example, the monitoring module may be a Battery Management System (BMS) control module arranged in the battery packs, and the BMS control module may monitor the state of the battery packs to reduce the occurrence of abnormal conditions such as overdischarge, overcharge, and over-high temperature of the battery packs. The inventor finds that if the battery pack in the energy storage system is detached from the cabinet each time, and then the monitoring module arranged in the battery pack is detached for maintenance, particularly the large-capacity energy storage system is very difficult to detach and transport. In view of this, the embodiment of the present application provides an energy storage system, can be convenient for carry out dismouting to the group battery, and then be convenient for overhaul the monitoring module in the group battery.
The technical scheme described in the embodiment of the application is suitable for various scenes using the energy storage system, for example, the energy storage system can be suitable for factory load power supply, mobile vehicle charging, base station power supply, ship power supply, spacecraft power supply and the like. For example, the energy storage system may be applied to an electric vehicle, a ship, an airplane, a rocket-spacecraft, and the like, and it should be understood that the technical solution described in the embodiments of the present application is not limited to be applicable to the above-described application scenarios, but may also be applicable to all power utilization scenarios.
As shown in fig. 1, which is a schematic structural diagram of an energy storage system 10 according to an embodiment of the present disclosure, the energy storage system 10 may include a frame 11 and at least one battery pack 12 disposed on the frame 11. As shown in fig. 2, which is a schematic perspective view of the battery pack 12 according to an embodiment of the present disclosure, the battery pack 12 may include a first housing 310, a second housing 320, and a third housing 330, wherein the second housing 320 is detachably connected to the first housing 310, and the third housing 330 is detachably connected to the first housing 310 or the second housing 320, so that the components enclosed in the first housing 310, the second housing 320, and the third housing 330 can be easily repaired by detaching the second housing 320 and/or the third housing 330.
The energy storage system 10 may include a plurality of battery packs 12, and the plurality of battery packs 12 may be stacked and orderly arranged to save installation space and facilitate connection between the battery packs 12. The plurality of battery packs 12 may be connected in series or in parallel or in series-parallel, and the series-parallel refers to a mixture of series connection and parallel connection.
Specifically, the battery pack 12 further includes a battery pack 200, the battery pack 200 is accommodated in a space defined by the first casing 310, the second casing 320 and the third casing 330, the battery pack 200 may include a plurality of battery cells 210, and the battery cells 210 are electrically connected to each other. The cell 210 includes a first electrode 211 and a second electrode 212, where one of the first electrode 211 and the second electrode 212 is a positive electrode, and the other is a negative electrode. As shown in fig. 2 and fig. 3, the battery pack 12 further includes a first electrical terminal 410 and a second electrical terminal 420, the plurality of battery cells 210 are electrically connected to form a total positive electrode and a total negative electrode of the power output, the first electrical terminal 410 is electrically connected to one of the total positive electrode and the total negative electrode, and the second electrical terminal 420 is electrically connected to the other of the total positive electrode and the total negative electrode, for example, the first electrical terminal 410 is electrically connected to the total positive electrode, and the second electrical terminal 420 is electrically connected to the total negative electrode. The plurality of battery packs 12 are electrically connected through the first electrical terminals 410 and the second electrical terminals 420.
The first electrical terminals 410 may include at least one first connection terminal 411, and the second electrical terminals 420 may include at least one second connection terminal 421. The plurality of battery packs 12 are electrically connected to form a total positive connection end and a total negative connection end of power output, one first connection end 411 of the plurality of battery packs 12 forms a first total connection end 400a of the energy storage system 10, one second connection end 421 of the plurality of battery packs 12 forms a second total connection end 400b of the energy storage system 10, the first total connection end 400a is used for forming one of the total positive connection end and the total negative connection end, and the second total connection end 400b is used for forming the other of the total positive connection end and the total negative connection end. For example, when the first electrical terminal 410 is connected to the total positive electrode of the cell group 200 and the second electrical terminal 420 is connected to the total negative electrode of the cell group 200, the first total connection terminal 400a is used to form a total positive connection terminal and the second total connection terminal 400b is used to form a total negative connection terminal. The first and second bus connection terminals 400a and 400b are electrically connected to an external circuit, for example, to charge the energy storage system 10, or to supply power to the external circuit.
Alternatively, the first electrical terminal 410 includes two first connection terminals 411, and the second electrical terminal 420 includes two second connection terminals 421, as shown in fig. 3, which is a schematic diagram of a plurality of battery packs 12 connected in parallel. One of the first connection terminals 411 of one of the two battery packs 12 located at both ends forms a first overall connection terminal 400a, one of the second connection terminals 421 of the other of the two battery packs 12 located at both ends forms a second overall connection terminal 400b, the first connection terminal 411 of the middle battery pack 12 is connected to the first connection terminal 411 of the adjacent battery pack 12, and the second connection terminal 421 of the middle battery pack 12 is connected to the second connection terminal 421 of the adjacent battery pack 12.
The battery pack 12 further includes a first circuit board 610, as shown in fig. 4 and 5, the first housing 310 of the battery pack 12 has a first space 310a and a first opening 310b communicated with the first space 310a, the assembled electric core pack 200 is accommodated in the first space 310a, the first circuit board 610 and the electric core pack 200 are oppositely disposed along the first direction a, and the first circuit board 610 is at least partially accommodated in the first space 310 a. After the second housing 320 and the third housing 330 enclose the first opening 310b, the electric core pack 200 is enclosed in the space among the first housing 310, the second housing 320 and the third housing 330, and at the same time, the portion of the first circuit board 610 accommodated in the first space 310a is enclosed in the space among the first housing 310, the second housing 320 and the third housing 330.
As shown in fig. 6 and 7, the direction a' in fig. 7 is the direction opposite to the first direction a, the battery pack 12 may further include a switching assembly, the switching assembly may include a first conductive member 510 and a second conductive member 520 electrically connected to the first conductive member 510, the first conductive member 510 and the second conductive member 520 are detachably connected, the first conductive member 510 is connected to the electric core assembly 200 and electrically connected to the electric core assembly 200, the second conductive member 520 is disposed on the first circuit board 610 and electrically connected to the first circuit board 610, and the second conductive member 520 may move away from or close to the first conductive member 510 along with the first circuit board 610 to disconnect or connect the second conductive member 520 and the first conductive member 510. At the same time, it is also convenient to remove the first circuit board 610 from the battery pack 12 for servicing the first circuit board 610. The first circuit board 610 may be a Battery Management System (BMS) circuit board, or the first circuit board 610 may be another circuit board electrically connected to the battery cell pack 200.
Further, as shown in fig. 7, the first circuit board 610 is fixed to the second housing 320, and both the first circuit board 610 and the second conductive member 520 can move together with the second housing 320. The third housing 330 is detachably connected to the first housing 310 or the second housing 320, and a projection of the third housing 330 covers a projection of a connection portion of the first conductive member 510 and the second conductive member 520 along the first direction a to protect the connection portion of the first conductive member 510 and the second conductive member 520. The second and third housings 320 and 330 close the first opening 310b and are detachably connected to the first housing 310. In the maintenance, the third housing 330 may be detached from the first housing 310, the connecting portion between the first conductive member 510 and the second conductive member 520 may be exposed, the connection between the first conductive member 510 and the second conductive member 520 may be released, and then the second housing 320, the first circuit board 610, and the second conductive member 520 may be detached from the first housing 310 together, so as to perform maintenance on the first circuit board 610 and the structure located in the first housing 310.
As shown in fig. 4, in some embodiments, first housing 310 includes a first flange 314 and a second flange 313, second flange 313 is disposed proximate first opening 310b, and second flange 313 is removably coupled to second housing 320 and third housing 330. The first flange 314 is located outside the first space 310a, and along a second direction B perpendicular to the first direction a, the first flange 314 is connected to the rack body 11 to fix the battery pack 12 to the rack body 11, so that the battery pack 12 can be overhauled by directly detaching the second housing 320 and the third housing 330 without detaching the battery pack 12 from the rack body 11.
The first conductive member 510 is detachably connected to the second conductive member 520, and the first conductive member 510 and the second conductive member 520 may be arranged to directly contact to achieve electrical connection, for example, the first conductive member 510 and the second conductive member 520 may both include elastic bending portions, and the elastic bending portions of the first conductive member 510 and the second conductive member 520 abut against each other, so that the first conductive member 510 and the second conductive member 520 are electrically connected; the abutting portion of the first conductive member 510 and the second conductive member 520 may also be provided with a threaded hole, and a screw is disposed in the threaded hole to lock and fix the first conductive member 510 and the second conductive member 520 to realize electrical connection. Alternatively, the first conductive member 510 and the second conductive member 520 may be detachably connected by using other auxiliary structures, for example, a clamping member is sleeved on a portion of the periphery of the abutting portion of the first conductive member 510 and the second conductive member 520 to fixedly connect the first conductive member 510 and the second conductive member 520, and the like.
The first conductive member 510 and the second conductive member 520 may be made of the same material, for example, the first conductive member 510 and the second conductive member 520 may be copper sheets, etc. In other embodiments, the first conductive member 510 and the second conductive member 520 may be made of different materials.
The first electrical terminal 410 can be fixed to the first housing 310, and a projection of the first electrical terminal 410 is separated from a projection of the second housing 320 along the first direction a; the second electrical end 420 can be disposed on the second casing 320, the second electrical end 420 is electrically connected to the first circuit board 610, and the first circuit board 610 is electrically connected to the electric core assembly 200 sequentially through the second conductive member 520 and the first conductive member 510. When the second housing 320 is disassembled, the first circuit board 610, the second conductive member 520, and the second electrical end 420 can move together with the second housing 320 to maintain the connection relationship among the first circuit board 610, the second conductive member 520, and the second electrical end 420, thereby facilitating the disassembly.
Based on different connection requirements, the first electrical terminal 410 and the second electrical terminal 420 may be disposed side by side on the same side of the first circuit board 610; the first electrical terminal 410 and the second electrical terminal 420 can also be disposed on opposite sides of the first circuit board 610. The arrangement of the first electrical terminal 410 and the second electrical terminal 420 corresponding to the first circuit board 610 may also be selected based on the arrangement of the plurality of battery packs 12 arranged on the frame 11. For example, when a plurality of battery packs 12 are stacked and fixed on the frame body 11 along the second direction B, the first electrical terminals 410 and the second electrical terminals 420 may be disposed side by side on the same side of the first circuit board 610, so as to collectively arrange the conductive circuits connecting the first electrical terminals 410 and the second electrical terminals 420, thereby facilitating the circuit arrangement.
As shown in fig. 7, the switching assembly further includes a third conductive member 540 for electrically connecting with the second electrical terminal 420, the second electrical terminal 420 is electrically connected with the first circuit board 610 through the third conductive member 540, and two ends of the third conductive member 540 are further fixed to the first circuit board 610 and the second electrical terminal 420, respectively, so that the third conductive member 540 can move together with the second electrical terminal 420, the first circuit board 610 and the second housing 320. The end of the third conductive member 540 may be fastened to the first circuit board 610 by screws, so that the first circuit board 610 may be removed for maintenance after the screws are removed.
As shown in fig. 8, the adapting assembly further includes a fourth conductive member 530 electrically connected to the first electrical terminal 410, and the first electrical terminal 410 is electrically connected to the electric core assembly 200 through the fourth conductive member 530.
The third conductive member 540 and the fourth conductive member 530 may be made of metal, for example, the third conductive member 540 and the fourth conductive member 530 may be copper sheets, etc. In other embodiments, the third conductive member 540 and the fourth conductive member 530 may be made of different materials. The first electrical terminal 410 and the second electrical terminal 420 may each include a base 401 and a conductive element 402, the conductive element 402 being disposed on the base 401. The conductive element 402 of the first electrical terminal 410 has one end electrically connected to the fourth conductive member 530 and the other end electrically connected to an external circuit; the conductive element 402 of the second electrical end 420 has one end electrically connected to the third conductive member 540 and the other end electrically connected to an external circuit. Further, as shown in fig. 9, the conductive element 402 may include two first sections 402a and a transition section 402b connecting the two first sections 402 a. When the first electrical terminal 410 has two first connection terminals 411, the two first sections 402a of the conductive element 402 form two first connection terminals 411; when the second electrical terminal 420 has two second connection terminals 421, the two first segments 402a of the conductive element 402 form two second connection terminals 421.
In some embodiments, the base 401 may include a first slot 401a, a first base opening 401b communicating with the first slot 401a, and a second base opening 401c, the conductive element 402 may be disposed in the first slot 401a, the fourth conductive member 530 or the third conductive member 540 may extend into the first slot 401a to be electrically connected with the conductive element 402, and the external circuit may be disposed in the second base opening 401c to be electrically connected with the first segment 402 a.
As shown in fig. 4, the second housing 320 includes a first main housing 321 and a first sub-housing 322, the first main housing 321 has a second opening 320a, along the first direction a, a portion of the conductive element 402 of the first electrical terminal 410 connected to the external device overlaps the second opening 320a, and the first sub-housing 322 closes the second opening 320 a. Optionally, the first sub-housing 322 may be detachably disposed on the base 401 of the second electrical terminal 420, or the first sub-housing 322 may be integrally disposed with the first main housing 321, so as to facilitate the connection between the conductive element 402 of the first electrical terminal 410 and an external device. Optionally, the second opening 320a covers the conductive element 402 of the first electrical terminal 410 along the first direction a, which facilitates the detachment and connection of the conductive element 402 of the first electrical terminal 410 to an external device, and facilitates the detachment and connection of the conductive element 402 of the first electrical terminal 410 to the fourth conductive member 530.
The third housing 330 includes a second main housing 331 and a second sub-housing 332, the third main housing 331 has a third opening 330a, along the first direction a, a portion of the conductive element 402 of the second electrical terminal 420 connected to the external device overlaps the third opening 330a, and the second sub-housing 332 closes the third opening 330 a. Optionally, the second sub-housing 332 is detachably disposed on the base 401 of the first electrical terminal 410.
The base 401 may further include a first protrusion 401d coupled to the first housing 310, and/or the base 401 may further include a second protrusion 401e coupled to the second housing 320 or the third housing 330, and the first protrusion 401d and the second protrusion 401e may each have a screw hole, so that the base 401 may be detachably provided to the first housing 310, the second housing 320, or the third housing 330. The number of the first protrusions 401d and the second protrusions 401e may be plural, and the plural first protrusions 401d and the plural second protrusions 401e are all staggered so as to facilitate the installation of the base 401.
As shown in fig. 8 and 10, the first electrode 211 and the second electrode 212 of the battery cell 210 may be oppositely disposed along a third direction C perpendicular to the first direction a, and the first direction a, the second direction B, and the third direction C are perpendicular to each other two by two. Alternatively, the first electrodes 211 of the multiple battery cells 210 in the battery pack 12 are disposed toward the same side, and the second electrodes 212 of the multiple battery cells 210 are disposed toward the same side. The cell 210 may further include a body portion 213 located between the first electrode 211 and the second electrode 212. The plurality of battery cells 210 are divided into a first battery cell group 201 and a second battery cell group 202, and the first battery cell group 201 and the second battery cell group 202 are stacked along a second direction B and electrically connected. Along the first direction a, the second casing 320 is arranged opposite to the first electric core group 201, and the third casing 330 is arranged opposite to the second electric core group 202. Alternatively, the second casing 320 and the body portion 213 of the battery cell 210 are disposed opposite to each other, and the third casing 330 and the body portion 213 of the battery cell 210 are disposed along the first direction a.
The second conductive member 520 extends from the first circuit board 610 to protrude out of the second housing 320, and the portion of the second conductive member 520 protruding out of the second housing 320 is electrically connected to the first conductive member 510. Referring to fig. 6 and 11, alternatively, the second conductive member 520 may extend from the first circuit board 610 to a side where the second electric core assembly 202 is located to protrude from the second casing 320, the first conductive member 510 is electrically connected to the electric core assembly 200, the first conductive member 510 is wound between the main body portion 213 of the second electric core assembly 202 and the third casing 330 from the side where the second electrode 212 is located, and is connected to a portion of the second conductive member 520 protruding from the second casing 320, and after the third casing 330 is removed, a connection portion between the first conductive member 510 and the second conductive member 520 may be directly exposed, so as to connect the first conductive member 510 and the second conductive member 520, or to release the connection between the first conductive member 510 and the second conductive member 520.
The battery pack 200 further includes a first adaptor plate 620 and a second adaptor plate 630 oppositely arranged along the third direction C, the plurality of battery cells 210 are electrically connected to the first adaptor plate 620 and the second adaptor plate 630, one of the first adaptor plate 620 and the second adaptor plate 630 forms a total positive electrode, and the other one of the first adaptor plate 620 and the second adaptor plate 630 forms a total negative electrode. For example, when the first electrode 211 is a positive electrode and the second electrode 212 is a negative electrode, the fourth conductive member 530 is connected to the total positive electrode formed on the first adapter plate 620, and the first conductive member 510 is connected to the total negative electrode formed on the second adapter plate 630.
In some embodiments, the number of the first transfer plates 620 may be two, and two first transfer plates 620 are respectively disposed corresponding to the first electric core group 201 and the second electric core group 202; the number of the second adaptor plates 630 may be two, and the two second adaptor plates 630 are respectively arranged corresponding to the first electric core group 201 and the second electric core group 202. The adapting assembly further includes a fifth conductive member 550, and both ends of the fifth conductive member 550 are electrically connected to the two first adapting plates 620 or the two second adapting plates 630 respectively. Optionally, the first conductive member 510 is electrically connected to the second adapter plate 630 of the first electric core group 201, and the fourth conductive member 530 is electrically connected to the first adapter plate 620 of the second electric core group 202; alternatively, the first conductive member 510 is electrically connected to the second adapter plate 630 of the second electric core set 202, and the fourth conductive member 530 is electrically connected to the first adapter plate 620 of the first electric core set 201. In this way, the cells 210 are connected through the first conductive member 510, the fourth conductive member 530 and the fifth conductive member 550 to form a smooth current path. The fifth conductive member 550 may also be a metal conductive member such as a copper sheet.
As shown in fig. 8, each of the first interposer 620 and the second interposer 630 may include a substrate 601, a plurality of conductive sheets 603 disposed on the substrate 601 (not shown in the figure), the plurality of conductive sheets 603 are electrically connected to the conductive sheet 601, the substrate 601 has two through holes corresponding to each conductive sheet 603, the first electrodes 211 or the second electrodes 212 of two adjacent battery cells 210 penetrate through the two through holes one by one and are electrically connected to the conductive sheets 603, and the conductive sheets 603 may be welded and fixed to the substrate 601. One of the conductive sheets 603 of the first interposer 620 forms one of a total positive electrode and a total negative electrode and is electrically connected to the fourth conductive member 530, and one of the conductive sheets 603 of the second interposer 630 forms the other of the total positive electrode and the total negative electrode and is electrically connected to the first conductive member 510. It can be understood that the first interposer 620 and the second interposer 630 may be both printed circuit boards, and based on the thin conductive traces, the plate-shaped conductive sheet 603 is disposed on the substrate 601, so that the conductive traces can be electrically connected to the first electrode 211 or the second electrode 212 through the conductive sheet 603, thereby improving the stability of the electrical connection between the plurality of battery cells 210.
The battery pack 12 further includes two collecting ports 700 electrically connected to the first adapter plate 620 and the second adapter plate 630, respectively, wherein one collecting port 700 is electrically connected to the conductive trace of the first adapter plate 620, the other collecting port 700 is electrically connected to the conductive trace of the second adapter plate 630, and the two collecting ports 700 are used for electrically connecting to an external system to obtain the voltage and temperature of the battery pack 12, so as to facilitate real-time monitoring of the operating condition in the battery pack 12.
Referring to fig. 5, the battery pack 12 may further include a connecting assembly 800, where the connecting assembly 800 includes an insulating sheet 810 and a plurality of bonding bars 820 disposed on opposite sides of the insulating sheet 810, and the bonding bars 820 may be disposed along a direction parallel to the plurality of battery cells 210 arranged side by side. The battery pack 12 further includes a connecting member 910 disposed between the first electric core pack 201 and the second electric core pack 202, the connecting assembly 800 is disposed between the second electric core pack 202 and the connecting member 910, and the adhesive strips 820 disposed at opposite sides of the insulating sheet 810 are respectively connected to the main body part 213 of the second electric core pack 201 and the connecting member 910. Optionally, the connecting assembly 800 is disposed on a side of the first electric core assembly 201 away from the second electric core assembly 202, and the adhesive strips 820 disposed on two opposite sides of the insulating sheet 810 are respectively connected to the main body portion 213 of the first electric core assembly 201 and the first housing 310. The bonding strips 820 disposed on the two sides of the insulation sheet 810 can effectively fix the plurality of battery cells 210, thereby facilitating the assembly of the battery pack 12.
As shown in fig. 12, the battery pack 12 further includes a first structural member 920, and the first structural member 920 is located between the first circuit board 610 and the main body portion 213 along the first direction a. When the plurality of battery cells 210 are divided into the first battery cell group 201 and the second battery cell group 202, the second casing 320 is disposed opposite to the first battery cell group 201, the third casing 330 is disposed opposite to the second battery cell group 202, and the battery pack 12 may further include a second structural member 930, and the second structural member 930 and the first structural member 920 are disposed along the second direction B. In the first direction a, the first structure 920 is located between the first circuit board 610 and the main body part 211 of the first electric core group 201; the second structure member 930 is located between the third housing 330 and the main body portion 211 of the second electric core pack 202.
The first structural member 920 and the second structural member 930 are both fixed to the first housing 310, and the first structural member 920 and the second structural member 930 are further accommodated in the first space 310 a. In the first direction a, the projection of the first structural member 920 covers the main portions 213 of the cells 211 in the first cell group 201, the projection of the second structural member 930 covers the main portions 213 of the cells 211 in the second cell group 202, and the first structural member 920 and the second structural member 930 can correspondingly limit the expansion of the cells 211, so as to improve the installation stability of the first cell group 201 and the second cell group 202 during the whole use process. A portion of the first conductive element 510 connected to the second conductive element 520 may be fixed to the second structural member 930, and a portion of the first conductive element 510 connected to the second conductive element 520 is located between the second structural member 930 and the third housing 330 in the first direction a, so as to improve connection stability between the first conductive element 510 and the second conductive element 520.
The first housing 310 includes a first wall 311 and a second wall 312 connected to the first wall 311, and a first space 310a and a first opening 310b are formed between the first wall 311 and the second wall 312. The second flange 313 is connected to the second wall 312, the second flange 313 may be integrally disposed with the second wall 312, and the first flange 314 is disposed at the periphery of the second wall 312 and connected to the second wall 312. The first wall 311 can extend along the third direction C to extend out of two opposite ends of the electric core set 210, so that when the electric core set 200 is installed on the first wall 311 by a lifting appliance, the edge of the first wall 311 can avoid the activity space of the lifting appliance.
In the first direction a, the main body part 213 far away from the second casing 320 in the first electric core group 201 can be directly connected to the second wall 312, and the main body part 213 far away from the third casing 330 in the second electric core group 202 can be directly connected to the second wall 312, which is beneficial to maintaining the installation stability of the first electric core group 201 and the second electric core group 202. The battery pack 12 further includes a third structural member 940, and in the first direction a, when there is a gap between the main body 213 of the first electric core assembly 201 far from the second casing 320 and the wall surface of the second wall 312, or there is a gap between the main body 213 of the second electric core assembly 202 far from the third casing 330, the third structural member 940 is disposed in the gap between the main body 213 and the wall surface of the second wall 312, so as to improve the mounting stability of the electric core 210. For example, when the number of the cells 210 in the first cell group 201 and the second cell group 202 is different, the third connecting member 940 is provided to support that the end surfaces of the cells 210 of the first cell group 201 adjacent to the second casing 320 and the cells 210 of the second cell group 202 adjacent to the third casing 330 are approximately flush, so as to make the overall structure of the battery pack 12 compact.
The same or similar reference numerals in the drawings of the present embodiment correspond to the same or similar components; in the description of the present application, it is to be understood that if there is an orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", etc. based on the orientation or positional relationship shown in the drawings, it is only for convenience of description and simplification of description, but it is not intended to indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and therefore, the terms describing the positional relationship in the drawings are only for illustrative purposes and are not to be construed as limitations of the present patent, and specific meanings of the above terms may be understood by those skilled in the art according to specific situations.
The above description is only exemplary of the present application and should not be taken as limiting the present application, as any modification, equivalent replacement, or improvement made within the spirit and principle of the present application should be included in the protection scope of the present application.
Claims (15)
1. A battery pack, comprising:
a first housing having a first space, a first opening communicating with the first space;
the electric core group is arranged in the first space;
The first circuit board is partially arranged in the first space, and the first circuit board and the electric core group are oppositely arranged along a first direction;
the switching assembly comprises a first conductive piece and a second conductive piece detachably connected with the first conductive piece, the first conductive piece is electrically connected with the second conductive piece, the first conductive piece is electrically connected with the electric core group, and the second conductive piece is arranged on the first circuit board and is electrically connected with the first circuit board;
the first circuit board is arranged on the second shell, and the second shell is detachably connected to the first shell; and
and the third shell is detachably connected to the first shell or the second shell, the projection of the third shell covers the projection of the connecting part of the first conductive piece and the second conductive piece along the first direction, and the second shell and the third shell close the first opening.
2. The battery pack of claim 1, wherein the second conductive member extends from the first circuit board to protrude out of the second case, and a portion of the second conductive member protruding out of the second case is electrically connected to the first conductive member.
3. The battery pack according to claim 1,
the battery pack comprises a first electrical property end and a second electrical property end which are opposite in polarity, the first electrical property end is electrically connected with the battery core pack, the second electrical property end is electrically connected with the first circuit board, and along a first direction, the projection of the first electrical property end is separated from the projection of the second shell.
4. The battery pack of claim 3, wherein the second electrical terminal is disposed in the second housing and electrically connected to the first circuit board.
5. The battery pack of claim 4, wherein the adapter assembly further comprises a third conductive member having one end connected to the second electrical terminal and the other end connected to the first circuit board.
6. The battery pack of claim 3, wherein the second housing comprises a first main housing and a first sub-housing, the first main housing is provided with a second opening, the second electrical terminal comprises a conductive element, a projection of the conductive element overlaps a projection of the second opening along the first direction, and the first sub-housing closes the second opening.
7. The battery pack according to claim 3, wherein the third housing comprises a second main housing and a second sub-housing, the second main housing is provided with a third opening, the first electrical terminal comprises a conductive element, a projection of the second conductive element overlaps a projection of the third opening along the first direction, and the second sub-housing closes the third opening.
8. The battery pack according to claim 3, wherein the switching assembly further comprises a fourth conductive member having one end connected to the first electrical end and the other end electrically connected to the electric core pack.
9. The battery pack of claim 1, wherein the battery core pack comprises a plurality of battery cells, the battery cells comprising a main body portion and first and second electrodes extending out of the main body portion, the battery pack further comprising a first structural member positioned between the first circuit board and the main body portion along the first direction.
10. The battery pack of claim 9, wherein the plurality of cells comprises a first group of cells and a second group of cells, the first group of cells and the second group of cells are stacked in a second direction, and the second direction is perpendicular to the first direction;
Along the first direction, the second shell is arranged opposite to the first electric core group, and the first structural member is positioned between the first circuit board and the main body part of the first electric core group;
along first direction, the third casing with the second electric core group sets up relatively, the group battery still including be located the third casing with the second electric core group the second structure between the main part.
11. The battery pack according to claim 10, wherein the first structural member and the second structural member are respectively fixed to the first case, and the first structural member and the second structural member are provided in the first space.
12. The battery pack of claim 10, further comprising a connecting assembly, wherein the connecting assembly comprises an insulating sheet and a plurality of bonding strips disposed on opposite sides of the insulating sheet, and the bonding strips are adhesively connected to the body portions of the plurality of cells.
13. The battery pack according to claim 10, wherein the first electrode and the second electrode are disposed opposite to each other along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other in pairs, and the battery pack includes a first interposer and a second interposer disposed opposite to each other along the third direction, the first interposer is electrically connected to the first electrode of the electric core, the second interposer is electrically connected to the second electrode of the electric core, and the first conductive member has one end connected to the second interposer and the other end connected to the second conductive member.
14. An energy storage system, comprising:
a frame body; and
the battery pack according to any one of claims 1 to 13, wherein the number of the battery packs is at least one, and the battery pack is disposed on the frame body.
15. The energy storage system of claim 14, wherein the first housing includes a first flange located outside the first space, the first flange being coupled to the frame in a second direction perpendicular to the first direction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111410519.3A CN114678644A (en) | 2021-11-25 | 2021-11-25 | Battery pack and energy storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111410519.3A CN114678644A (en) | 2021-11-25 | 2021-11-25 | Battery pack and energy storage system |
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| CN114678644A true CN114678644A (en) | 2022-06-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202111410519.3A Pending CN114678644A (en) | 2021-11-25 | 2021-11-25 | Battery pack and energy storage system |
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