WO2022199618A1 - 一种电池组及用电设备 - Google Patents

一种电池组及用电设备 Download PDF

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Publication number
WO2022199618A1
WO2022199618A1 PCT/CN2022/082506 CN2022082506W WO2022199618A1 WO 2022199618 A1 WO2022199618 A1 WO 2022199618A1 CN 2022082506 W CN2022082506 W CN 2022082506W WO 2022199618 A1 WO2022199618 A1 WO 2022199618A1
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WO
WIPO (PCT)
Prior art keywords
cell
adapter
battery pack
hole
battery
Prior art date
Application number
PCT/CN2022/082506
Other languages
English (en)
French (fr)
Inventor
袁宏伟
童衍辰
Original Assignee
东莞新能安科技有限公司
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 东莞新能安科技有限公司 filed Critical 东莞新能安科技有限公司
Priority to EP22774274.9A priority Critical patent/EP4207455A4/en
Publication of WO2022199618A1 publication Critical patent/WO2022199618A1/zh
Priority to US18/193,964 priority patent/US20230238622A1/en

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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
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/147—Lids or covers
    • H01M50/166—Lids or covers characterised by the methods of assembling casings with lids
    • H01M50/171—Lids or covers characterised by the methods of assembling casings with lids using adhesives or sealing agents
    • 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
    • H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
    • H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
    • H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring temperature
    • 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
    • H01M10/60—Heating or cooling; Temperature control
    • H01M10/65—Means for temperature control structurally associated with the cells
    • H01M10/655—Solid structures for heat exchange or heat conduction
    • H01M10/6551—Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
    • 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
    • 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]
    • 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
    • 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
    • H01M50/531—Electrode connections inside a battery casing
    • H01M50/54—Connection of several leads or tabs of plate-like electrode stacks, e.g. electrode pole straps or bridges
    • 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
    • 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 embodiments of the present application relate to the technical field of battery manufacturing, and in particular, to a battery pack and electrical equipment.
  • the inventors of the present application found that the cells of the existing battery packs tend to generate heat during long-term charging and discharging, and the high temperature of the cells may lead to safety such as thermal runaway of the battery packs. Accidents affect the use of battery packs.
  • the embodiments of the present application provide a battery pack and electrical equipment, which can improve the problem that the battery pack's thermal runaway is easily caused by the high temperature rise of the battery cells during long-term charging and discharging.
  • a battery pack comprising: a cover plate, a battery core module, a first resin layer, a battery pack casing, at least one first detection member and a first limit member.
  • the battery core module is accommodated in the battery pack case and fixed by the first resin layer, the cover plate is fixed on the battery pack casing, and the battery core module includes a plurality of battery packs stacked along the first direction. set of cells.
  • Each cell includes an electrode assembly, a cell case for accommodating the electrode assembly, and a tab electrically connected to the electrode assembly, the cell case including a sealing portion, the tab extending from the electrode assembly.
  • the sealing portion extends out of the cell housing along the second direction.
  • the first detection piece is arranged between the sealing parts of the adjacent cells, the first detection piece is connected to the cell module, and the first detection piece is used to detect the The temperature of the tabs is detected.
  • the first limiting member is disposed between the sealing parts of the battery cells, a limiting hole is provided on the first limiting member, and the first detection member is arranged in the limiting hole.
  • the first limiter is used to limit the first detection piece between the sealing parts of the battery cells, and the first detection piece detects the temperature rise at the tabs, which can not only achieve the purpose of monitoring the temperature rise of the battery cells, but also The risk of damage to the surface of the battery cell and leakage of liquid caused by the expansion and extrusion of the first detection piece by the battery core can be reduced.
  • the cell module includes an adapter assembly, and the adapter assembly includes an adapter plate, and the adapter plate is disposed at one end of the battery core close to the tab, so
  • the adapter plate is provided with at least one first through hole. Viewed in the opposite direction to the second direction, one of the first through holes and one of the limiting holes at least partially overlap, and one of the first detection components One end away from the limiting hole protrudes from the first through hole and is connected to the adapter plate. Since the first through hole and the limiting hole on the adapter plate at least partially overlap, the first detection piece can protrude from the first through hole to be electrically connected to the adapter plate.
  • the adapter assembly includes an adapter, the adapter is disposed on the adapter plate, and the adapter includes a first adapter and a second adapter, The first adapter is connected to one tab of the cell, and the second adapter is connected to the other tab of the cell.
  • the battery pack includes a first insulator, the first insulator is disposed between the second adapter and the adapter plate, and the first insulator In order to achieve insulation, the contact between the second adapter and the tabs of the battery cells connected to the adapter plate is reduced.
  • the cell includes a first cell and a second cell that are adjacently arranged, the first cell includes a first cell shell and a first tab, and the first cell includes a first cell shell and a first tab.
  • a tab protrudes out of the first cell housing along a second direction, the second cell includes a second cell housing and a second tab, and the second tab protrudes in the second direction the second cell housing;
  • the adapter assembly includes a conductive sheet, the conductive sheet is arranged on a surface of the adapter plate away from the battery core; the adapter plate is provided with a second through hole and a second through hole Three through holes, the second through hole and the third through hole are located on both sides of the conductive sheet, the first tab passes through the second through hole and is connected to the conductive sheet away from the adapter board The second tab is connected to a surface of the first tab away from the conductive sheet through the third through hole, so that the connection between the adjacent cells and the adapter board is realized. electrical connection.
  • the adapter plate is provided with heat dissipation holes, and the heat dissipation holes are used to dissipate heat from the adapter plate.
  • the battery pack includes a second insulating member, and one side of the second insulating member is disposed on a surface of the cell close to the cover plate; the battery pack further includes a second insulating member.
  • Two detection parts the second detection part is arranged on the side of the cover plate close to the battery cell, the second detection part includes a first detection part, a second detection part and a guide plate, the first detection part One side of the part is fixed to the cover plate, the other side of the first detection part is connected to one side of the guide plate, the other side of the guide plate is connected to one side of the second detection part, The other side of the second detection part is attached to the other side of the second insulating member, and the second insulating member plays an insulating role to reduce the direct contact between the second detection member and the surface of the cell, so as to reduce the Danger of leakage of batteries.
  • the second detection part further includes an adhesive area, the adhesive area is used to connect the first detection part and the second detection part, and make the first detection part and the second detection part A gap is formed between the second detection parts.
  • the battery pack includes a circuit board, and the circuit board is disposed on a surface of the cover plate away from the cell module; the cover plate is provided with a fourth through hole; the A connecting end is provided on the guide plate, the connecting end extends out of the cover plate through the fourth through hole and is connected to the circuit board, and the circuit board is used for receiving the collision of the battery cells transmitted by the second detection piece information and respond in a timely manner to ensure the safety of the cells.
  • an electrical device comprising the battery pack as described above.
  • the embodiments of the present application are provided with a cover plate, a battery core module, a first resin layer, a battery pack casing, at least one first detection piece and a second A limiter, wherein the battery core module is accommodated in the battery pack casing and fixed by a first resin layer, the cover plate is fixed on the battery pack casing, and the battery core module includes a plurality of battery packs stacked along a first direction.
  • Each cell includes an electrode assembly, a cell case for accommodating the electrode assembly, and a tab for electrically connecting the electrode assembly, and the cell case includes a sealing portion. The tabs extend out of the cell housing along the second direction from the sealing portion.
  • a first detection piece is arranged between the sealing portions of adjacent cells, the first detection piece is connected to the cell module, and the first detection piece It is used to detect the temperature of the tabs of the battery cells.
  • the first limiter is arranged between the sealing parts of the cells, and the first limiter fixes the first detection part. In this way, since the tabs are connected to the cells Inside, the temperature rise at the tab is close to the temperature rise inside the cell, and the first limiter is used to limit the first detector between the sealing parts of the cell, and the first detector detects the temperature rise at the tab , which can realize the timely monitoring of the temperature rise of the battery cell and reduce the risk of thermal runaway of the battery pack during the charging and discharging process.
  • FIG. 1 is a schematic diagram of the overall structure assembly of a battery pack according to an embodiment of the present application
  • FIG. 2 is an exploded schematic diagram of the overall structure of the battery pack according to the embodiment of the present application.
  • FIG. 3 is a schematic exploded schematic diagram of a partial structure of a battery pack according to an embodiment of the present application.
  • FIG. 4 is a schematic diagram of the internal structure of a single cell of a battery pack according to an embodiment of the present application.
  • FIG. 5 is a schematic side view of a single cell of a battery pack according to an embodiment of the present application.
  • FIG. 6 is a schematic structural diagram of an adapter plate of a battery pack according to an embodiment of the present application.
  • FIG. 7 is another exploded schematic diagram of the partial structure of the battery pack according to the embodiment of the present application.
  • FIG. 8 is a side view of the tab of the battery pack according to the embodiment of the present application, which is deflected relative to the adapter plate;
  • Fig. 9 is the partial structure enlarged schematic diagram of A in Fig. 8.
  • FIG. 10 is a schematic diagram of the internal structure of the first cell of the battery pack according to the embodiment of the present application.
  • FIG. 11 is a schematic diagram of the internal structure of the second cell of the battery pack according to the embodiment of the present application.
  • FIG. 12 is a partial structural cross-sectional view of a battery pack according to an embodiment of the present application.
  • Figure 13 is an enlarged schematic view of the structure of part B in Figure 13;
  • FIG. 14 is a schematic structural diagram of a first limiting member of a battery pack according to an embodiment of the present application.
  • FIG. 15 is another perspective exploded schematic view of a partial structure of the battery pack according to the embodiment of the present application.
  • 16 is an exploded schematic diagram of the overall structure of the second detection member of the battery pack according to the embodiment of the present application.
  • FIG. 17 is a schematic structural diagram of a cover plate of a battery pack according to an embodiment of the present application.
  • FIG. 18 is another angular structural schematic diagram of the cover plate of the battery pack according to the embodiment of the present application.
  • FIG. 19 is a schematic structural diagram of a battery pack case of a battery pack according to an embodiment of the present application.
  • the structure of the battery pack will be described in conjunction with the X, Y, and Z coordinate axes.
  • the X, Y, and Z coordinate axes are perpendicular to each other, and the first direction is the positive direction of the Z axis.
  • the second direction is the positive direction of the X axis, and the third direction is the positive direction of the Y axis.
  • the battery pack 01 includes: a cover plate 10 , a cell module 20 , a first resin layer 30 , a battery pack casing 40 , at least one first detection member 50 and a first limiting member 60 .
  • the cell module 20 is accommodated in the battery pack casing 40 and fixed by the first resin layer 30
  • the cover plate 10 is fixed on the battery pack casing 40
  • a first detection member 50 is disposed on the adjacent cell 21 .
  • the first limiting member 60 is arranged between the sealing parts 2121 of the cell 21 .
  • the first limiting member 60 is used to limit the position of the first detection member 50
  • the first detection member 50 is used to The temperature rise of the battery cell 21 is detected.
  • the battery pack 01 further includes: a second insulating member 70, a second detecting member 80, a circuit board 90, a third insulating member 100, a second limiting member 110, a third limiting member 120, a first buffer pad 130 and a second limiting member 110. Cushion pad 140 .
  • the second insulating member 70 is disposed on a surface of the cell 21 close to the cover plate 10
  • the second detecting member 80 is disposed on the side of the cover plate 10 close to the cell 21
  • the second detecting member 80 is used to detect the cell The degree of expansion of the battery cell 21 is monitored.
  • the third insulating member 100 is arranged between adjacent cells 21.
  • the circuit board 90 is arranged on a surface of the cover plate 10 away from the cell module 20.
  • the second detection member 80 is connected to the The circuit board 90 is electrically connected to transmit the expansion of the battery cell 21 to the circuit board 90 , and the circuit board 90 responds in time to ensure the safety of the battery cell 21 .
  • the structure of the battery pack 01 will be described with reference to the X, Y, and Z coordinate axes, wherein the X, Y, and Z coordinate axes are perpendicular to each other.
  • the cell module 20 includes a plurality of cells 21 stacked along the first direction Z.
  • the first direction is the Z direction in this embodiment, and the plurality of battery cells 21 are stacked along the Z direction.
  • Each cell 21 includes an electrode assembly 211 , a cell case 212 for accommodating the electrode assembly 211 , and a tab 213 electrically connected to the electrode assembly 211 .
  • the cell housing 212 includes a sealing portion 2121 , and the tabs 213 extend out of the cell housing 212 along the second direction X from the sealing portion 2121 .
  • the sealing portion 2121 seals the electrode assembly 211 accommodated in the cell case 212 to restrict the water vapor from outside entering the cell case 212 .
  • the tabs 213 include positive tabs 213a and negative tabs 213b, and the positive tabs 213a and the negative tabs 213b between the plurality of cells 21 are connected.
  • the sealing portion 2121 includes a first sealing portion 2121a and a second sealing portion 2121b, and the second sealing portion 2121b extends from an end of the first sealing portion 2121a away from the cell housing 212,
  • the length of the first sealing portion 2121a in the third direction Y is greater than the length of the second sealing portion 2121b in the third direction Y, and the third direction Y is perpendicular to the first direction Z and the second direction X at the same time .
  • the sealing portion 2121 of the cell case 212 is bonded and fixed, so that the electrode assembly 211 is sealed in the cell case 212.
  • the first sealing portion 2121a and the second sealing portion 2121b form the top seal of the cell 21 .
  • one end of the tab 213 of the battery cell 21 is connected to the electrode assembly 211 , and the other end of the tab 213 protrudes from the sealing portion 2121 along the second direction X.
  • the cell case 212 includes an accommodating portion 2122 , the accommodating portion 2122 is connected to the first sealing portion 2121 a , and the accommodating portion 2122 is used for accommodating the electrode assembly 211 .
  • the first direction refers to the direction along the Z axis.
  • the first direction Z is the thickness direction of the battery core 21 .
  • the second direction refers to the direction along the X-axis.
  • the third direction refers to the direction along the Y-axis.
  • the cell module 20 includes an adapter assembly 22
  • the adapter assembly 22 includes an adapter plate 221 , an adapter member 222 and a conductive sheet 223 .
  • the adapter plate 221 is disposed on the end of the battery core 21 close to the tab 213
  • the adapter 222 is disposed on the adapter plate 221
  • the conductive sheet 223 is disposed on the adapter plate 221 A surface facing away from the battery cell 21 .
  • the conductive sheet 223 is used to connect the battery cells 21 to realize the electrical connection between the adapter plate 221 and the battery cells 21 .
  • the adapter board 221 is a PCB circuit board, and the PCB can be used as a carrier of electronic components, which is beneficial to the connection between the internal components of the battery pack.
  • the adapter plate 221 is provided with heat dissipation holes 2211 , and the heat dissipation holes 2211 can be used to dissipate heat to the adapter plate 221 , so as to prevent the adapter plate 221 from being damaged due to excessive temperature rise.
  • the adapter plate 221 is provided with at least one first through hole 2212 , and the first through hole 2212 is convenient for the first detection member 50 to pass through.
  • the adapter board 221 is then electrically connected to the adapter board 221 .
  • a second through hole 2213 and a third through hole 2214 are provided on the adapter plate 221 , and the second through hole 2213 and the third through hole 2214 are located on both sides of the conductive sheet 223 , so The second through holes 2213 and the third through holes 2214 facilitate the connection of the tabs 213 of the battery cells 21 to the adapter plate 221 .
  • the width of the second through hole 2213 and the third through hole 2214 along the first direction Z is 0.6 mm-1.2 mm.
  • the lengths of the second through holes 2213 and the third through holes 2214 along the third direction Y are set according to the width of the tabs 213 actually passed through.
  • the second through holes 2213 and the third through holes 2214 The length along the third direction Y is greater than 1 mm. And when the tab 213 of the battery cell 21 passes through the second through hole 2213 and the third through hole 2214, the tab 213 is offset from the second direction X in the second through hole 2213 and the third through hole 2214.
  • the folding angle & is less than 30 degrees, and the setting in this way can reduce the risk of liquid leakage of the battery cell 21 caused by pulling the sealing portion 2121 of the battery cell 21 .
  • the adapter 222 includes a first adapter 2221 and a second adapter 2222, the first adapter 2221 is connected to a tab 213 of the battery cell 21, the second adapter 2221 The adapter 2222 is connected to the other tab 213 of the battery cell 21 .
  • the adapter 222 includes copper bars.
  • the first adapter 2221 may be a total positive copper bar
  • the second adapter 2222 may be a total negative copper bar. It can be understood that the first adapter 2221 is not limited to be a total positive copper bar, and the second adapter 2222 is not limited to a total negative copper bar.
  • the first adapter 2221 and the second adapter 2222 have opposite polarities.
  • the adapter 222 can also include a plurality of first adapters 2221 and a second adapter 2222, the plurality of cells 21 can be connected in series or in parallel, and the plurality of first adapters 2221 can be connected to the electric The positive or negative tabs of the core 21 , and the plurality of second adapters 2222 can be connected to the negative or positive tabs of the battery cells 21 .
  • the polarities of the first adapter 2221 and the second adapter 2222 connected to the tabs 213 of the battery cells 21 are not limited.
  • the first adapter 2221 can be connected to the positive tab 213 of the cell 21
  • the second adapter 2222 can be connected to the negative tab 213 of the cell 21
  • the first adapter 2221 and the second adapter 2222 are connected
  • the polarities of the tabs 213 are not limited, as long as the first adaptor 2221 and the second adaptor 2222 satisfy the requirements for connecting the tabs 213 with opposite polarities.
  • the first adapter 2221 includes a first connecting portion 2221a
  • the second adapter 2222 includes a second connecting portion 2222b
  • the first connecting portion 2221a and the second connecting portion 2222b are The first direction Z, that is, extending from the adapter plate 221 along the Z-axis direction.
  • the first connection part 2221a and the second connection part 2222b can be used for external components, for example, the external components can be a fuse device, when the internal current of the battery exceeds a specified value, the fuse device can disconnect the circuit to effectively protect the battery internal circuit.
  • the fuse device is a fuse, and when the internal current of the battery exceeds a specified value, the fuse can disconnect the circuit to effectively protect the internal circuit of the battery.
  • the adapter assembly 22 further includes a first insulating member 224 disposed between the second adapter member 2222 and the adapter plate 221 .
  • the first insulating member 224 plays an insulating role and restricts the contact between the second adapter member 2222 and the tab 213 of the battery cell 21 connected to the adapter plate 221 .
  • the first insulating member 224 can be an epoxy board, but the first insulating member 224 is not limited to being an epoxy board, and can also be other materials, such as rubber pads.
  • the adjacent cells 21 are called the first cell 21' and the second cell 21" respectively, and the cell shell and the tab 213 of the first cell 21' are respectively called Referred to as a first cell shell 211' and a first tab 212', and the first tab 212' protrudes from the first cell shell 211' along the second direction X, and the second cell
  • the 21" cell housing and tabs are referred to as the second cell housing 211" and the second tab 212", and the second tab 212" protrudes from the second cell housing along the second direction X 211".
  • the first cell 21' includes a first cell shell 211' and a first tab 212'.
  • the second cell 21" includes a second cell shell 211" and a second tab 212".
  • One end of the first tab 212' protruding from the first cell shell 211' passes through the first tab 212'.
  • the two through holes 2213 are connected to a surface of the conductive sheet 223 away from the adapter plate 221 , and the end of the second tab 212 ′′ protruding from the second cell housing 211 ′′ is connected through the third through hole 2214 On a surface of the first tab 212' facing away from the conductive sheet 223.
  • the first tab 212' and the second tab 212' are connected to the conductive sheet 223 installed on the adapter plate 221 to realize the adjacent
  • the battery cell 21 is electrically connected to the adapter board 221 . It can be understood that the polarities of the first tab 212' and the second tab 212" are opposite, the first tab 212' is a positive tab or a negative tab, and the second tab 212" is a negative tab ear or positive ear
  • the first detection member 50 is disposed between the sealing parts 2121 of adjacent cells 21, and the first detection member 50 is connected to the first detection member 50.
  • the adapter board 221 of the cell module 20 is electrically connected, and the first detection member 50 is used for detecting the temperature of the cell 21 .
  • the first detection member 50 is used to detect the temperature of the tabs of the battery cell 21 .
  • the first detection member 50 includes a detection portion 501 and a connection portion 502, the detection portion 501 is provided with a plurality of sensing elements, and the sensing elements can be used to sense temperature, etc., and the connection portion 502 includes a wire, the wire It is used to electrically connect the detection part 501 to other components, so as to realize the transmission between the electrical signals of the detection part 501 and the electrical signals of other components.
  • the board 221 is electrically connected to realize the transmission between the electrical signal of the detection part 501 and the electrical signal of the adapter board 221 .
  • the first detection member 50 may be a temperature sensor, and the temperature sensor is used to detect the temperature rise of the tabs 213 to achieve the purpose of detecting the temperature rise of the battery cell 21 .
  • the temperature sensor can be a thermocouple temperature sensor.
  • the first detection member 50 is connected to the top surface of the battery cell 21.
  • the first detection member 50 is connected to the top surface of the battery cell 21 in contact, so that the first detection member 50 is connected to the top surface of the battery cell 21 in contact with each other.
  • the detection element 50 can more accurately detect the temperature at the tabs of the battery cells 21 .
  • the first detection member 50 is connected to the sealing portion 2121 of the battery cell 21.
  • the first detection member 50 is connected to the sealing portion 2121 of the battery cell 21 in contact, so that the The first detection member 50 can detect the temperature at the tabs of the battery cells 21 more accurately.
  • the first limiting member 60 As shown in FIG. 13 and FIG. 14, the first limiting member 60 is disposed between the sealing parts 2121 of the battery cells 21, and the first limiting member 60 is opposite to each other.
  • the first detection member 50 is used to limit the position, and at the same time, the first limit member 60 isolates the sealing portions 2121 of the adjacent cells 21 to limit the contact and connection of the sealing portions 2121 of the adjacent cells 21 .
  • the first limiting member 60 includes an insulating structure.
  • the first limiting member 60 is foam.
  • the Shore C hardness of the foam is above 50 degrees.
  • an insulating material is provided on the surface of the first limiting member 60 .
  • Shore hardness also known as Shore hardness, is a method to express the hardness level of metal, plastic and rubber materials. Shore hardness is divided into four types: A type, B type, C type and D type. Shore C Hardness is one of them.
  • the first limiting member 60 is provided with a limiting hole 61
  • the first detection member 50 is provided in the limiting hole 61 .
  • the shape of the limiting hole 61 is not limited, the limiting hole 61 may be a rectangular parallelepiped or a cylindrical shape, and the shape of the limiting hole 61 may be determined according to the actual shape of the first detection member 50 . set up.
  • the diameter of the limiting hole 61 is larger than the width of the first detection member 50 in the third direction Y by 1-2 mm, which is conducive to better placement of the first detection member 50 and limits the first detection member 50 Shake in the limiting hole 61 .
  • the limiting hole 61 is viewed in a direction opposite to the second direction X, that is, viewed in a direction perpendicular to the adapter plate 221 and pointing toward the adapter plate 221 , the limiting hole 61 and a first through hole 2212 at least partially overlap, and one end of the first detection member 50 away from the limiting hole 61 protrudes from the first through hole 2212 and is connected to the adapter plate 221 .
  • the limiting hole 61 at least partially overlaps with a first through hole 2212 , and this arrangement facilitates the extension of the first detection member 50 to be electrically connected to the adapter plate 221 , and also facilitates heat dissipation of the battery cell 21 .
  • the second detection member 80 and the circuit board 90 As shown in FIG. 1 , FIG. 15 and FIG. 16 , the second detection member 80 is disposed on the side of the cover plate 10 close to the battery cell 21 .
  • the second detection member 80 is used to detect the expansion degree of the battery cell 21
  • the circuit board 90 is disposed on a surface of the cover plate 10 away from the battery cell module 20
  • the circuit board 90 and the second detection member 80 Electrically connected
  • the circuit board 90 receives the expansion information of the battery cells 21 transmitted by the second detection element 80 and responds in time to ensure the safety of the battery cells 21 .
  • the second detection part 80 includes a first detection part 801 , a second detection part 802 and a guide plate 803 , one side of the first detection part 801 is fixed to the cover plate 10 , and the first detection part 801 is fixed to the cover plate 10 .
  • the other side of the guide plate 801 is connected to one side of the guide plate 803, the other side of the guide plate 803 is connected to one side of the second detection part 802, and the other side of the second detection part 802 is attached to the In conjunction with the second insulating member 70 , when the first detection part 801 and the second detection part 802 are connected, information is transmitted through the guide plate 803 .
  • the first detection part 801 and the second detection part 802 are both a thin film sheet, formed by disposing conductive silver paste on the thin film sheet, and the conductive silver paste is the first detection part 801 and the first detection part 801 and the first detection part 802. Two conductive parts of the detection part 802 .
  • the second detection piece further includes a bonding area 804, the bonding area 804 is arranged near the edge of the guide plate 803, and the bonding area 804 is formed by coating glue or double-sided tape at the edge.
  • the structure is formed, and the bonding area 804 connects the first detection part 801 and the second detection part 802 .
  • the adhesive area 804 is coated with glue, so that a gap is formed between the first detection part 801 and the second detection part 802 except for the adhesive area 804, for example, a gap is formed. 0.2mm gap.
  • the battery cell 21 When the battery cell 21 expands, the battery cell 21 will push the second detection part 802 to move toward the first detection part 801 , and the gap provides a movement space for the second detection part 802 to move toward the first detection part 801 , when the conductive parts of the first detection part 801 and the second detection part 802 are in contact, the first detection part 801 and the second detection part 802 are connected, and then the guide plate 803 transmits the information about the expansion of the battery cell 21 .
  • the guide plate 803 is provided with a connecting end 8031 , and the connecting end 8031 is connected to the circuit board 90 after passing through the fourth through hole 101 on the cover plate 10 , so as to realize the connection between the second detection member 80 and the circuit board 90 .
  • Electrical connection of circuit board 90 .
  • the connecting portion 8031 passes through the fourth through hole 101 and is soldered to the circuit board 90 to realize the connection between the second detection member 80 and the circuit board 90 .
  • the fixing method between the connection portion 8031 and the circuit board 90 is not limited to the welding method, and can also be other fixing methods, such as screw connection and the like.
  • the circuit board 90 is a Battery Management System (BMS) board, and the BMS board can be used to control data such as the voltage of the battery cells 21 , and after receiving the information transmitted from the guide board 803 , The circuit of the cell 21 responds in time to ensure the safety of the cell 21 .
  • BMS Battery Management System
  • the second insulating member 70 plays an insulating role, reducing the direct contact between the second detecting member 80 and the surface of the battery cell 21 , so as to reduce the leakage risk of the battery cell 21 .
  • the Shore A hardness of the second insulating member 70 is more than 50 degrees, which is beneficial to the connection between the second detecting member 80 and the second insulating member 70 .
  • the second insulating member 70 can insulate between the second detecting member 80 and the battery cell 21 .
  • the second insulating member 70 includes a rubber pad.
  • the second insulating member 70 includes foam.
  • the second insulating member 70 includes an insulating support, the insulating support is disposed on a surface of the battery core 21 close to the cover plate 10 , and two sides of the insulating support are clamped to the electrical core 21 .
  • the insulating support can not only insulate the second detection member 80 and the battery core 21 , but also make the battery core 21 firmer.
  • the insulating support is integrally formed by an injection molding process.
  • the second insulating member 70 is connected to the second detecting member 80 near the first surface 70a of the cover plate 10 .
  • the second insulating member 70 is in contact with the second detecting member 80 close to the first surface 70a of the cover plate 10 .
  • the first surface 70 a of the second insulating member 70 close to the cover plate 10 is not completely covered by the first resin layer 30 .
  • the second insulating member 70 is partially covered by the first resin layer 30 .
  • the first resin layer 30 fixes the cell module 20 in the battery pack case 40 and is used for connecting with the battery pack case 40 .
  • the battery core module 20 is covered together to protect the battery core module 20 .
  • the cells 21 are stacked along the first direction Z, and there are gaps on the sides of adjacent cells 21 , and the first resin layer 30 is filled in the side gaps to achieve bonding and fixing of the adjacent cells 21 .
  • the side edge of the battery cell 21 can also be a peripheral position of the outer contour of the battery core 21 , so that the first resin layer 30 is more firm when fixing the battery core 21 .
  • the first resin layer 30 is disposed in the battery pack case 40 to fill the gap between the battery pack case 40 and other structural components.
  • the pouring method of the first resin layer 30 may be glue pouring or injection molding, for example, low pressure injection molding.
  • the first resin layer 30 is a potting glue, and the potting glue can perform functions such as bonding, sealing, potting and coating protection of the components.
  • the first resin layer 30 is epoxy resin potting glue. It can be understood that the first resin layer 30 is not limited to be an epoxy resin layer potting glue, and in some embodiments, the first resin layer 30 can also be replaced by other types of potting glue.
  • part of the first resin layer 30 is injected into the limiting hole 61 , and the fixed first resin layer 30 fixes the first detection member 50 disposed in the limiting hole 61 to limit the The first detection member 50 shakes in the limiting hole 61 .
  • the first resin layer 30 is coated on a surface of the battery cells 21 close to the cover plate 10 .
  • the battery cells 21 Push the first resin layer 30 to move toward the second detection part 80
  • the first resin layer 30 pushes the second detection part 802 to move toward the first detection part 801 , when the second detection part 802 and the first detection part 802
  • the first detection element 50 forms a conductive loop and is connected to the external structure through the guide plate 803 , thereby transmitting the information that the first detection part 801 and the second detection part 802 are connected.
  • the first resin layer 30 covers the plurality of battery cells 21 to achieve bonding and fixing between the battery cells 21 .
  • the first resin layer 30 is disposed between the second insulating member 70 and the battery cells 21 .
  • the battery cells 21 push all the cells 21 .
  • the insulating support moves toward the second detection part 80, and the first resin layer 30 pushes the second detection part 802 to move toward the first detection part 801.
  • the first detection element 50 forms a conductive loop, and is connected to the external structure through the guide plate 803, thereby transmitting the information that the first detection part 801 and the second detection part 802 are connected.
  • the third insulating member 100 is disposed between adjacent cells 21 .
  • the third insulating member 100 may be compressed to provide space for the cells 21 to expand.
  • the third insulating member 100 is foam, and the foam is disposed between adjacent cells 21 . When the cells 21 expand, the foam can be compressed to provide the cells 21 with Expansion space.
  • the second limiting member 110 is disposed on the second adapter 2222, and is used to adjust the second rotation
  • the connecting member 2222 limits the position.
  • the third limiting member 120 is disposed at the end of the battery cell 21 away from the tab 213 , and the third limiting member 120 limits the end of the battery cell 21 away from the electrode tab 213 .
  • the second limiting member 110 and the third limiting member 120 are both limiting foam. It can be understood that, the second limiting member 110 and the third limiting member 120 are not limited to limiting foam, but may also be other devices, such as insulating rubber pads.
  • the first buffer pad 130 and the second buffer pad 140 are respectively disposed on both sides of the cell module 20 along the third direction Y.
  • the first buffer pad 130 and the second buffer pad 140 play the role of buffer protection for the battery cell module 20 inside the battery pack, so as to reduce the direct collision between the battery cell module 20 and the battery pack casing and cause damage.
  • the first buffer pad 130 and the second buffer pad 140 can be buffer foam, but it is understood that the first buffer pad 130 and the second buffer pad 140 are not limited to be buffer foam , can also be other devices, such as: cushioning rubber pads.
  • the cover plate 10 is disposed on the battery pack case 40 along the Z-axis direction, and the cover plate 10 is connected to the battery pack case 40 .
  • the cover plate 10 is substantially rectangular, and the cover plate 10 can restrict the direct contact between the external components and the components in the battery pack casing 40 .
  • the cover plate 10 and the battery pack case 40 can be fixed by screwing, but not limited to screwing, and other fixing methods, such as welding, riveting, etc. are also possible.
  • the cover plate 10 is provided with a fourth through hole 101 , and the fourth through hole 101 facilitates the connection between the circuit board 90 and the second detection member 80 .
  • One end is connected to the circuit board 90 after passing through the fourth through hole 101 .
  • the shape of the cover plate 10 is not limited to a rectangle, and in battery packs 01 of different shapes, the shape of the cover plate 10 can be replaced according to different battery packs. For example, when the overall shape of the battery pack is cylindrical, the cover plate 10 can be arranged in a circular shape.
  • the cover plate 10 is provided with a fifth through hole 102 and a sixth through hole 103, and the fifth through hole 102 and the sixth through hole 103 are used for the first connecting portion 2221a and the The second connecting portion 2222b extends out to externally connect other components.
  • a groove 104 is provided on a side of the cover plate 10 close to the cell module, and the groove 104 is used for placing the second detection member 80 .
  • a side of the cover plate 10 close to the cell module is a flat plate-like structure, and the second detection member 80 is disposed on the cover plate 10 by means of bonding or the like.
  • the battery pack case 40 has a cuboid structure, and the battery pack case 40 is provided with a receiving space 40a and an opening communicating with the receiving space 40a.
  • the battery pack housing 40 includes four side walls 401 and a bottom wall 402, the four side walls 401 and the bottom wall 402 enclose the receiving space 40a, and the battery module 20 is arranged in the receiving space 40a.
  • the cover plate 10 is used to cover the opening, and the cell module 20 is wrapped in the battery pack casing 40.
  • the shape of the battery pack case 40 is not limited to this, and can also be other structures.
  • the shape of the battery pack case 40 may be Cylindrical.
  • the shape of the battery pack case 40 can be replaced according to the shape of the cell module 20 .
  • the fixing method of the battery pack case 40 and the cover plate 10 may be a snap-fastening method. It can be understood that, the fixing method of the battery pack case 40 and the cover plate 10 is not limited to this, and can also be a method, such as: bonding and fixing the two with an adhesive, and so on.
  • the cover plate 10 , the battery core module 20 , the first resin layer 30 , the battery pack case 40 , at least one first detection member 50 and the first limit member 60 are provided, wherein the battery
  • the core module 20 is accommodated in the battery pack casing 40 and fixed by the first resin layer 30
  • the cover plate 10 is fixed on the battery pack casing 40
  • the battery core module 20 includes a plurality of batteries stacked along the first direction Z.
  • Cells 21 each cell 21 includes an electrode assembly 211 , a cell case for accommodating the electrode assembly 211 , and a tab 213 for electrically connecting the electrode assembly 211
  • the cell case includes a sealing portion 2121 .
  • the tabs 213 extend from the sealing portion 2121 out of the cell housing along the second direction X.
  • a first detection member 50 is disposed between the sealing portions 2121 of the adjacent cells 21.
  • the first detection member 50 is connected to the cell mold.
  • the group 20 is connected, the first detection member 50 is used to detect the temperature of the tab 213 of the battery cell 21, the first limit member 60 is arranged between the sealing parts 2121 of the battery cell 21, A detection member 50 is fixed, so that since the tab 213 is connected to the inside of the battery cell 21, the temperature rise at the electrode tab 213 is close to the temperature rise inside the battery core 21, and the first limit member 60 is used to limit the first detection member 50.
  • the first detector 50 detects the temperature rise at the tabs 213, which can monitor the temperature rise of the battery cells in time and reduce the risk of thermal runaway of the battery pack during charging and discharging. .
  • the application also provides an embodiment of an electrical device, the electrical device includes the above battery pack, the electrical device includes but is not limited to two-wheeled electric vehicles, energy storage devices, hand-held power tools, etc., the function of the battery pack Reference may be made to the above-mentioned embodiments for the structure and structure, which will not be repeated here.

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  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池组（01），包括盖板（10）、电芯模组（20）、第一树脂层（30）、电池组壳体（40）和至少一个第一检测件（50），电芯模组（20）收容于所述电池组壳体（40）内，并通过第一树脂层（30）固定，盖板（10）固定于电池组壳体（40），电芯模组（20）包括多个沿第一方向堆叠设置的电芯（21）。每个电芯（21）包括电极组件（211）、用于容纳电极组件（211）的电芯壳体（212）、以及电连接至电极组件（211）的极耳（213），电芯壳体（212）包括密封部（2121），极耳（213）从密封部（2121）沿第二方向延伸出电芯壳体（212）。一所述第一检测件（50）设置于相邻电芯（21）的密封部（2121）之间，第一检测件（50）与电芯模组（20）连接，第一检测件（50）用于对电芯（21）的极耳（213）的温度进行检测。通过上述方式，能够降低电池包在充放电过程中出现热失控的风险。

Description

一种电池组及用电设备
相关申请的交叉参考
本申请要求于2021年03月24日提交中国专利局，申请号为202120604362.7，名称为“一种电池组及用电设备”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请实施例涉及电池制造技术领域，特别是涉及一种电池组及用电设备。
背景技术
目前市场上，常用的电池包含有单个电芯，单个电芯的电量较少，为了增大电量，通常将多个电芯包裹形成一个新的电池包，新的电池包可解决电池电量较少的问题。
但是，本申请的发明人在实现本申请的过程中，发现：现有的电池包在长时间充放电过程中电芯容易出现发热，电芯的温度过高可能会造成电池包热失控等安全事故，影响电池包组的使用。
申请内容
鉴于上述问题，本申请实施例提供了一种电池组及用电设备，改善上述电池在长时间充放电过程中电芯温升较高易造成电池包热失控等问题。
根据本申请的一个方面，提供了一种电池组，包括：盖板、电芯模组、第一树脂层、电池组壳体、至少一个第一检测件和第一限位件。所述电芯模组收容于所述电池组壳体内，并通过所述第一树脂层固定，所述盖板固定于所述电池组壳体，电芯模组包括多个沿第一方向堆叠设置的电芯。每个电芯包括电极组件、用于容纳所述电极组件的电芯壳体、 以及电连接至所述电极组件的极耳，所述电芯壳体包括密封部，所述极耳从所述密封部沿第二方向延伸出所述电芯壳体。一所述第一检测件设置于所述相邻电芯的密封部之间，所述第一检测件与所述电芯模组连接，所述第一检测件用于对所述电芯的极耳的温度进行检测。所述第一限位件设置于所述电芯的密封部之间，所述第一限位件上设置有限位孔，所述第一检测件设置于所述限位孔内。利用第一限位件将第一检测件限位于电芯的密封部之间，第一检测件对极耳处的温升进行检测，不仅能实现对电芯的温升进行监控的目的，并且可减少第一检测件被电芯膨胀挤压造成电芯表面破损漏液的风险。
在一种可选的方式中，所述电芯模组包括转接组件，所述转接组件包括转接板，所述转接板设置于所述电芯靠近所述极耳的一端，所述转接板上设置有至少一个第一通孔，沿与所述第二方向相反方向观察，一所述第一通孔与一所述限位孔至少部分重叠，一所述第一检测件远离所述限位孔的一端从所述第一通孔伸出并与所述转接板连接。由于转接板上的第一通孔和限位孔至少部分重叠，第一检测件可从第一通孔伸出与转接板电连接。
在一种可选的方式中，所述转接组件包括转接件，所述转接件设置于所述转接板，所述转接件包括第一转接件和第二转接件，所述第一转接件连接于所述电芯的一极耳，所述第二转接件连接于所述电芯的另一极耳。
在一种可选的方式中，所述电池组包括第一绝缘件，所述第一绝缘件设置于所述第二转接件和所述转接板之间，所述第一绝缘件起到绝缘作用，减少第二转接件与连接在转接板上的电芯极耳接触。
在一种可选的方式中，所述电芯包括相邻设置的第一电芯和第二电芯，所述第一电芯包括第一电芯壳体和第一极耳，所述第一极耳沿第二方向伸出所述第一电芯壳体，所述第二电芯包括第二电芯壳体和第二极耳，所述第二极耳沿第二方向伸出所述第二电芯壳体；所述转接组件包括导电片，所述导电片设置于所述转接板背离所述电芯的一表面；所述转接板上设置第二通孔和第三通孔，所述第二通孔和第三通孔位于所述 导电片的两侧，所述第一极耳穿过所述第二通孔连接于所述导电片远离所述转接板的一表面，所述第二极耳穿过所述第三通孔连接于所述第一极耳背离所述导电片的一表面，这样设置，实现相邻电芯与转接板之间的电连接。
在一种可选的方式中，所述转接板上设置有散热孔，所述散热孔用于对转接板进行散热。
在一种可选的方式中，所述电池组包括第二绝缘件，所述第二绝缘件的一侧设置于所述电芯靠近所述盖板的一表面；所述电池组还包括第二检测件，所述第二检测件设置于所述盖板靠近所述电芯的一侧，所述第二检测件包括第一检测部、第二检测部和引导板，所述第一检测部的一侧固定于所述盖板，所述第一检测部的另一侧连接于所述引导板的一侧，所述引导板的另一侧连接所述第二检测部的一侧，所述第二检测部的另一侧贴合于所述第二绝缘件的另一侧，所述第二绝缘件起到绝缘的作用，减少第二检测件与电芯表面直接接触，以降低电芯的漏电危险。
在一种可选的方式中，所述第二检测件还包括粘接区，所述粘接区用于连接所述第一检测部和第二检测部，并使得所述第一检测部和所述第二检测部之间形成间隙。
在一种可选的方式中，所述电池组包括电路板，所述电路板设置于盖板背离所述电芯模组的一表面；所述盖板上设置有第四通孔；所述引导板上设置有连接端，所述连接端穿过所述第四通孔伸出所述盖板连接于所述电路板，所述电路板用于接收第二检测件传递的电芯的碰撞信息并且及时做出响应，以保证电芯的安全。
根据本申请的另一个方面，提供了一种用电设备，所述用电设备包括如上所述的电池组。
本申请实施例的有益效果是：区别于现有技术的情况，本申请实施例通过设置有盖板、电芯模组、第一树脂层、电池组壳体、至少一个第一检测件和第一限位件，其中，电芯模组收容于电池组壳体内，并通过第一树脂层固定，盖板固定于电池组壳体，电芯模组包括多个沿第一方向堆叠设置的电芯，每个电芯包括电极组件、用于容纳电极组件的电芯壳体、以及电连接电极组件的极耳，电芯壳体包括密封部。极耳从密封 部沿第二方向延伸出电芯壳体，此外，一第一检测件设置于相邻电芯的密封部之间，第一检测件与电芯模组连接，第一检测件用于对电芯的极耳的温度进行检测，第一限位件设置于电芯的密封部之间，第一限位件对第一检测件进行固定，这样设置，由于极耳连接电芯内部，极耳处的温升与电芯内部温升接近，利用第一限位件将第一检测件限位于电芯的密封部之间，第一检测件对极耳处的温升进行检测，能实现对电芯的温升及时监控，降低电池包在充放电过程出现热失控的风险。
附图说明
为了更清楚地说明本申请具体实施例或现有技术中的技术方案，下面将对具体实施例或现有技术描述中所需要使用的附图作简单地介绍。在所有附图中，类似的元件或部分一般由类似的附图标记标识。附图中，各元件或部分并不一定按照实际的比例绘制。
图1是本申请实施例电池组的整体结构组装示意图；
图2是本申请实施例电池组的整体结构分解示意图；
图3是本申请实施例电池组的部分结构分解示意图；
图4是本申请实施例电池组的单个电芯的内部结构示意图；
图5是本申请实施例电池组的单个电芯的侧面示意图；
图6是本申请实施例电池组的转接板的结构示意图；
图7是本申请实施例电池组的部分结构另一分解示意图；
图8是本申请实施例电池组的极耳相对转接板偏折侧视图；
图9是图8中A的部分结构放大示意图；
图10是本申请实施例电池组的第一电芯的内部结构示意图；
图11是本申请实施例电池组的第二电芯的内部结构示意图；
图12是本申请实施例电池组的部分结构剖视图；
图13是图13中B部分结构的放大示意图；
图14是本申请实施例电池组的第一限位件的结构示意图；
图15是本申请实施例电池组的部分结构的另一角度分解示意图；
图16是本申请实施例电池组的第二检测件的整体结构分解示意图；
图17是本申请实施例电池组的盖板的结构示意图；
图18是本申请实施例电池组的盖板的另一角度结构示意图；
图19是本申请实施例电池组的电池组壳体的结构示意图。
附图说明：10、盖板；101、第四通孔；102、第五通孔；103、第六通孔；104、凹槽；20、电芯模组；21、电芯；21＇、第一电芯；211＇、第一电芯壳体；212＇、第一极耳；21＂、第二电芯；211＂、第二电芯壳体；212＂、第二极耳；211、电极组件；212、电芯壳体；2121、密封部；2121a、第一密封部；2121b、第二密封部；2122、容纳部；213、极耳；22、转接组件；221、转接板；2211、散热孔；2212、第一通孔；2213、第二通孔；2214、第三通孔；222、转接件；2221、第一转接件；2221a、第一连接部；2222、第二转接件；2222b、第二连接部；223、导电片；224、第一绝缘件；30、第一树脂层；40、电池组壳体；40a、收容空间；401、侧壁；402、底壁；50、至少一个第一检测件；501、侦测部；502、连接部；60、第一限位件；61、限位孔；70、第二绝缘件；70a、第一表面；80、第二检测件；801、第一检测部；802、第二检测部；803、引导板；8031、连接端；90、电路板；100、第三绝缘件；110、第二限位件；120、第三限位件；130、第一缓冲垫；140、第二缓冲垫。
具体实施方式
为了便于理解本申请，下面结合附图和具体实施例，对本申请进行更详细的说明。需要说明的是，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本说明书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。本说明书中在本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，不是用于限制本申请。本说明书所使用的术语“和/或”包括一个或多个相关的 所列项目的任意的和所有的组合。
为了更好的对电池组的结构进行说明，将结合X、Y、Z坐标轴对电池组的结构进行叙述，其中，X、Y、Z坐标轴两两垂直，第一方向为Z轴的正方向，第二方向为X轴的正方向，第三方向为Y轴的正方向。
请参阅图1和图2，电池组01包括：盖板10、电芯模组20、第一树脂层30、电池组壳体40、至少一个第一检测件50和第一限位件60。其中，电芯模组20收容于电池组壳体40内，并通过第一树脂层30固定，盖板10固定于电池组壳体40，一第一检测件50设置于相邻电芯21的密封部2121之间，第一限位件60设置于电芯21的密封部2121之间，第一限位件60用于对第一检测件50进行限位，第一检测件50用于对电芯21的温升进行检测。
电池组01还包括:第二绝缘件70、第二检测件80、电路板90、第三绝缘件100、第二限位件110、第三限位件120、第一缓冲垫130和第二缓冲垫140。其中，第二绝缘件70设置于电芯21靠近所述盖板10的一表面，第二检测件80设置于盖板10靠近电芯21的一侧，第二检测件80用于对电芯21的膨胀程度进行监测，所述第三绝缘件100设于相邻电芯21之间，此外，电路板90设置于盖板10背离电芯模组20的一表面，第二检测件80与电路板90电连接，将电芯21的膨胀情况传递给电路板90，电路板90及时做出响应，以保证电芯21的安全。
为了更好的对电池组01的结构进行说明，将结合X、Y、Z坐标轴对电池组01的结构进行叙述，其中，X、Y、Z坐标轴两两垂直。
对于上述电芯模组20，如图3-图5所示，电芯模组20包括多个沿第一方向Z堆叠设置的电芯21。优选的，第一方向为本实施例中的Z方向，多个电芯21沿Z方向堆叠设置。每个电芯21包括电极组件211、用于容纳所述电极组件211的电芯壳体212、以及电连接至所述电极组件211的极耳213。所述电芯壳体212包括密封部2121，所述极耳213从所述密封部2121沿第二方向X延伸出所述电芯壳体212。密封部2121将收容于电芯壳体212内的电极组件211进行密封，限制外部的水汽进入电芯壳体212内。优选的，所述极耳213包括正极耳213a和负极耳 213b，所述多个电芯21之间的正极耳213a和负极耳213b连接。
在一些实施例中，所述密封部2121包括第一密封部2121a和第二密封部2121b，所述第二密封部2121b自所述第一密封部2121a背离所述电芯壳体212一端延伸，所述第一密封部2121a在第三方向Y上的长度大于所述第二密封部2121b在第三方向Y上的长度，所述第三方向Y同时垂直于第一方向Z和第二方向X。
需要说明的是：在所述电极组件211设置于电芯壳体212内后，所述电芯壳体212的密封部2121粘结固定，实现将电极组件211密封在电芯壳体212内，其中，第一密封部2121a和第二密封部2121b形成电芯21的顶封。同时，电芯21的极耳213一端连接电极组件211，极耳213的另一端从密封部2121沿第二方向X伸出。
在一些实施例中，所述电芯壳体212包括容纳部2122，所述容纳部2122连接所述第一密封部2121a，所述容纳部2122用于收容所述电极组件211。
需要说明的是：所述第一方向指的是沿Z轴方向。优选的，所述第一方向Z为所述电芯21的厚度方向。所述第二方向指的是沿X轴方向。所述第三方向指的是沿Y轴方向。
在一些实施例中，所述电芯模组20包括转接组件22，所述转接组件22包括转接板221、转接件222和导电片223。所述转接板221设置于所述电芯21靠近所述极耳213的一端，所述转接件222设置于所述转接板221，所述导电片223设置于所述转接板221背离所述电芯21的一表面。其中，导电片223用于连接电芯21，实现将转接板221和电芯21之间电连接。
在一些实施例中，所述转接板221为PCB电路板，所述PCB可作为电子元器件的载体，有利于电池组内部部件之间的连接。
在一些实施例中，所述转接板221上设置有散热孔2211，所述散热孔2211可用于对转接板221进行散热，限制转接板221温升过高而损坏。
在一些实施例中，如图3和图6所示，所述转接板221上设置有至 少一个第一通孔2212，所述第一通孔2212便于所述第一检测件50穿过所述转接板221后与转接板221电连接。
在一些实施例中，所述转接板221上设置第二通孔2213和第三通孔2214，所述第二通孔2213和第三通孔2214位于所述导电片223的两侧，所述第二通孔2213和第三通孔2214便于电芯21的极耳213穿过与转接板221连接。优选的，所述第二通孔2213和第三通孔2214沿所述第一方向Z上的宽度为0.6mm-1.2mm。所述第二通孔2213和第三通孔2214沿第三方向Y上的长度根据实际穿过的极耳213的宽度而设置，优选的，所述第二通孔2213和第三通孔2214沿第三方向Y上的长度大于1mm。并且所述电芯21的极耳213穿过所述第二通孔2213和第三通孔2214时，极耳213在第二通孔2213和第三通孔2214内与第二方向X的偏折角度&小于30度，这样设置，可减少电芯21的密封部2121拉扯造成电芯21漏液的风险。
在一些实施例中，所述转接件222包括第一转接件2221和第二转接件2222，所述第一转接件2221连接于电芯21的一极耳213，所述第二转接件2222连接于所述电芯21的另一极耳213。优选的，所述转接件222包括铜排。进一步的，所述第一转接件2221可为总正铜排，第二转接件2222可为总负铜排。可以理解的是，所述第一转接件2221不限于为总正铜排，所述第二转接件2222不限于为总负铜排。优选的，第一转接件2221和第二转接件2222电极性相反。优选的，转接件222也可以包括多个第一转接件2221和第二转接件2222，多个电芯21之间可以串联或并联，多个第一转接件2221可以连接到电芯21的正极耳或负极耳，多个第二转接件2222可以连接到电芯21的负极耳或正极耳。
第一转接件2221和第二转接件2222连接电芯21的极耳213的极性不作限制。此外，第一转接件2221可连接电芯21的正极耳213，第二转接件2222则连接电芯21的负极耳213，所述第一转接件2221和第二转接件2222连接的极耳213的极性不作限制，只要第一转接件2221和第二转接件2222满足连接极性相反的极耳213即可。
在一些实施例中，所述第一转接件2221包括第一连接部2221a，所 述第二转接件2222包括第二连接部2222b，所述第一连接部2221a和第二连接部2222b沿所述第一方向Z，即沿Z轴方向伸出所述转接板221。所述第一连接部2221a和第二连接部2222b可用于外接部件，例如：外接部件可为保险装置，所述保险装置在电池内部电流超过规定值时，保险装置可断开电路，有效保护电池内部电路。在一些实施例中，所述保险装置为熔断器，在电池内部电流超过规定值时，熔断器可断开电路，有效保护电池内部电路。
在一些实施例中，所述转接组件22还包括第一绝缘件224，所述第一绝缘件224设置于所述第二转接件2222和所述转接板221之间。所述第一绝缘件224起到绝缘作用，限制第二转接件2222与连接在转接板221上的电芯21极耳213接触。可以理解的是，所述第一绝缘件224可为环氧板，但第一绝缘件224不限于为环氧板，也可以为其他材料，例如：橡胶垫。
以下以相邻的两个电芯21为例进行说明：
如图7-图11所示，相邻设置的电芯21分别称为第一电芯21＇和第二电芯21＂，第一电芯21＇的电芯壳体和极耳213又分别称为第一电芯壳体211＇和第一极耳212＇，且所述第一极耳212＇沿第二方向X伸出所述第一电芯壳体211＇，而第二电芯21＂的电芯壳体和极耳称为第二电芯壳体211＂和第二极耳212＂，且第二极耳212＂沿第二方向X伸出所述第二电芯壳体211＂。所述第一电芯21＇包括第一电芯壳体211＇和第一极耳212＇。所述第二电芯21＂包括第二电芯壳体211＂和第二极耳212＂。其中，所述第一极耳212＇伸出第一电芯壳体211＇的一端穿过第二通孔2213连接于所述导电片223背离所述转接板221的一表面，所述第二极耳212＂伸出第二电芯壳体211＂的一端穿过第三通孔2214连接于所述第一极耳212＇背离所述导电片223的一表面。第一极耳212＇和第二极耳212＂通过连接安装在转接板221上的导电片223，实现将相邻电芯21与转接板221之间电连接。可以理解的是，所述第一极耳212＇和第二极耳212＂的极性相反，所述第一极耳212＇为正极耳或负极耳，所述第二极耳212＂为负极耳或正极耳。
对于上述至少一个第一检测件50，如图12和图13所示，一所述第一检测件50设置于相邻电芯21的密封部2121之间，所述第一检测件50与所述电芯模组20的转接板221电连接，所述第一检测件50用于对电芯21的温度进行检测。优选的，所述第一检测件50用于对电芯21的极耳温度进行检测。优选的，所述第一检测件50包括侦测部501和连接部502，所述侦测部501设有若干感应元件，感应元件可用于感测温度等，所述连接部502包括导线，导线用于将侦测部501与到其他部件之间电连接，实现侦测部501的电信号与其他部件的电信号之间的传输，例如，本实施中，导线将侦测部501与转接板221电连接，实现侦测部501的电信号与转接板221的电信号之间的传输。
在一些实施例中，所述第一检测件50可为温度传感器，利用温度传感器对极耳213的温升进行检测从而实现对电芯21的温升进行检测的目的。优选的，温度传感器可为热电偶温度传感器。
在一些实施例中，所述第一检测件50与电芯21的顶封面连接，优选的，所述第一检测件50与所述电芯21的顶封面接触连接，可使得所述第一检测件50对电芯21极耳处的温度检测更准确。
在一些实施例中，所述第一检测件50与电芯21的密封部2121连接，优选的，所述第一检测件50与所述电芯21的密封部2121接触连接，可使得所述第一检测件50对电芯21极耳处的温度检测更准确。
对于上述第一限位件60，如图13和图14所示，所述第一限位件60设置于所述电芯21的密封部2121之间，所述第一限位件60对所述第一检测件50进行限位，同时所述第一限位件60对相邻电芯21的密封部2121进行隔离，限制相邻电芯21的密封部2121接触连接。
在一些实施例中，所述第一限位件60包括绝缘结构。优选的，所述第一限位件60为泡棉。优选的，泡棉的邵尔C硬度在50度以上。优选的，所述第一限位件60的表面设有绝缘材料。
需要说明的是：邵尔硬度又称邵氏硬度，表示金属、塑料、橡胶材料硬度等级的一种方法，邵尔硬度分为A型、B型、C型、D型四种，邵尔C硬度作为其中的一种。
在一些实施例中，所述第一限位件60设置有限位孔61，所述第一检测件50设置于所述限位孔61内。可以理解的是，所述限位孔61的形状不作限定，所述限位孔61可为长方体形或圆柱形，所述限位孔61的形状可根据实际的第一检测件50的形状而设定。优选的，所述限位孔61的孔径大于第一检测件50在第三方向Y上的宽度1-2mm，利于更好的放置所述第一检测件50，限制所述第一检测件50在限位孔61内晃动。
在一些实施例中，所述限位孔61沿与所述第二方向X相反方向观察，即沿垂直于所述转接板221并指向转接板221的方向观察，一所述限位孔61与一所述第一通孔2212至少部分重叠，一所述第一检测件50远离所述限位孔61的一端从所述第一通孔2212伸出并与转接板221连接。限位孔61与一第一通孔2212至少部分重叠，这样设置，便于第一检测件50伸出与转接板221电连接，同时也利于电芯21的散热。
对于上述第二检测件80和电路板90，如图1、图15和图16所示，所述第二检测件80设置于所述盖板10靠近所述电芯21的一侧，所述第二检测件80用于检测电芯21的膨胀程度，所述电路板90设置于所述盖板10背离所述电芯模组20的一表面，所述电路板90与第二检测件80电连接，所述电路板90接收第二检测件80传递的电芯21的膨胀信息并且及时做出响应，以保证电芯21的安全。
具体的，所述第二检测件80包括第一检测部801、第二检测部802和引导板803，所述第一检测部801的一侧固定于所述盖板10，所述第一检测部801的另一侧连接于所述引导板803的一侧，所述引导板803的另一侧连接所述第二检测部802的一侧，所述第二检测部802的另一侧贴合于所述第二绝缘件70，当所述第一检测部801和第二检测部802连接时，通过所述引导板803传递信息。
优选的，所述第一检测部801和所述第二检测部802均为一薄膜片，通过在薄膜片上设置导电银浆而形成，导电银浆为所述第一检测部801和所述第二检测部802的导电部。
所述第二检测件还包括粘接区804，所述粘接区804设于所述引导板803靠近边缘处，且所述粘接区804由在该边缘处涂覆胶水或双面胶等结构形成，所述粘接区804使得所述第一检测部801和第二检测部802连接。所述粘接区804处涂覆有胶水，可使得所述第一检测部801和所述第二检测部802之间除所述粘接区804以外的其他区域之间形成间隙，例如，形成0.2mm的间隙。在电芯21膨胀时，所述电芯21会推动所述第二检测部802朝所述第一检测部801运动，所述间隙提供第二检测部802朝第一检测部801运动的运动空间，当第一检测部801和第二检测部802的导电部接触时，所述第一检测部801和第二检测部802实现连接，之后，引导板803传递电芯21膨胀的相关信息。
在一些实施例中，所述引导板803上设置有连接端8031，所述连接端8031穿过所述盖板10上的第四通孔101后连接电路板90，实现第二检测件80与电路板90的电连接。优选的，所述连接部8031穿过所述第四通孔101后焊接于所述电路板90，实现第二检测件80与电路板90的连接。可以理解的是，所述连接部8031与电路板90之间的固定方式不限于利用焊接方式，也可以为其他固定方式，例如：螺接等。
在一些实施例中，所述电路板90为Battery Management System(BMS)板，所述BMS板可用于对电芯21的电压等数据进行控制，以及在接收到引导板803传递出的信息后对电芯21的电路及时做出响应，以保证电芯21的安全。
对于上述第二绝缘件70，如图15所示，所述第二绝缘件70的一侧设置于所述电芯21靠近所述盖板10的一表面，所述第二绝缘件70的另一侧与所述第二检测部802的另一侧贴合。所述第二绝缘件70起到绝缘的作用，减少第二检测件80与电芯21表面直接接触，以降低电芯21的漏电风险。
在一些实施例中，所述第二绝缘件70的邵氏A硬度50度以上，有利于第二检测件80和第二绝缘件70连接。
所述第二绝缘件70可使得第二检测件80和电芯21之间绝缘，优选的，所述第二绝缘件70包括橡胶垫。优选的，所述第二绝缘件70包 括泡棉。
在一些实施例中，所述第二绝缘件70包括绝缘支架，所述绝缘支架设置于所述电芯21靠近盖板10的一表面，且所述绝缘支架的两侧卡接于所述电芯21的两侧，所述绝缘支架不仅可使得第二检测件80和电芯21之间绝缘，而且使得电芯21更牢固。优选的，所述绝缘支架通过注塑成型工艺一体成型。
在一些实施例中，所述第二绝缘件70靠近盖板10的第一表面70a和第二检测件80连接。优选的，所述第二绝缘件70靠近盖板10的第一表面70a和第二检测件80接触连接。优选的，所述第二绝缘件70靠近盖板10的第一表面70a未完全被第一树脂层30包覆。优选的，所述第二绝缘件70被所述第一树脂层30部分包覆。
对于上述第一树脂层30，如图2所示，所述第一树脂层30将所述电芯模组20固定于所述电池组壳体40内，用于和所述电池组壳体40共同包覆所述电芯模组20，以保护所述电芯模组20。电芯21沿第一方向Z堆叠设置，相邻电芯21的侧边存在间隙，所述第一树脂层30填充于所述侧边间隙内，实现将相邻电芯21粘结固定。优选的，所述电芯21的侧边也可为电芯21的外轮廓周边位置，从而使得所述第一树脂层30在固定电芯21时，更加牢固。所述第一树脂层30设于电池组壳体40内，填充电池组壳体40和其他结构件之间的间隙。
在一些实施例中，所述第一树脂层30的灌注方式可为灌胶或注塑，例如，低压注塑。在本实施例中，所述第一树脂层30为灌封胶，该灌封胶可以起到对元器件进行粘结、密封、灌封和涂覆保护等作用。优选的，所述第一树脂层30为环氧树脂灌封胶。可以理解的是，所述第一树脂层30不限于为环氧树脂层灌封胶，在一些实施例中，所述第一树脂层30还可替换为其他类型的灌封胶。
在一些实施例中，部分所述第一树脂层30注入所述限位孔61内，固定后的第一树脂层30对设于限位孔61内第一检测件50进行固定，限制所述第一检测件50在所述限位孔61内晃动。
在一些实施例中，所述第一树脂层30包覆于所述电芯21靠近所述 盖板10的一表面，所述多个电芯21发生膨胀到一定程度时，所述电芯21推所述第一树脂层30朝第二检测件80运动，第一树脂层30推动所述第二检测部802朝所述第一检测部801运动，当所述第二检测部802和第一检测部801的导电部接触时，第一检测件50形成导通的回路，并通过引导板803与外部结构连接，从而传递出第一检测部801和第二检测部802连通的信息。
在一些实施例中，所述第一树脂层30包覆于多个电芯21，实现对电芯21之间的粘结固定。
在一些实施例中，所述第一树脂层30设于所述第二绝缘件70和电芯21之间，所述多个电芯21发生膨胀到一定程度时，所述电芯21推动所述绝缘支架朝第二检测件80运动，第一树脂层30推动所述第二检测部802朝所述第一检测部801运动，当所述第二检测部802和第一检测部801的导电部接触时，第一检测件50形成导通的回路，并通过引导板803与外部结构连接，从而传递出第一检测部801和第二检测部802连通的信息。
对于上述第三绝缘件100，如图2所示，所述第三绝缘件100设置于相邻电芯21之间。在所述电芯21膨胀时，所述第三绝缘件100可被压缩为电芯21膨胀提供空间。
在一些实施例中，所述第三绝缘件100为泡棉，所述泡棉设置于相邻电芯21之间，在所述电芯21膨胀时，泡棉可被压缩为电芯21提供膨胀空间。
对于上述第二限位件110和第三限位件120，如图2所示，所述第二限位件110设置于所述第二转接件2222上，用于对所述第二转接件2222限位，所述第三限位件120设置于电芯21背离所述极耳213的一端，所述第三限位件120对电芯21背离极耳213的一端进行限位。
在一些实施例中，所述第二限位件110和第三限位件120均为限位泡棉。可以理解的是，所述第二限位件110和第三限位件120不限于为限位泡棉，也可以为其他装置，例如：绝缘橡胶垫。
对于上述第一缓冲垫130和第二缓冲垫140，如图2所示，所述第 一缓冲垫130和第二缓冲垫140沿第三方向Y分别设置于电芯模组20的两侧。第一缓冲垫130和第二缓冲垫140对电池组内部的电芯模组20起到缓冲保护的作用，减少电芯模组20与电池包壳体直接碰撞，造成损坏。
在一些实施例中，所述第一缓冲垫130和第二缓冲垫140可为缓冲泡棉，但可以理解的是，所述第一缓冲垫130和第二缓冲垫140不限于为缓冲泡棉，也可以为其他装置，例如：缓冲橡胶垫。
对于上述盖板10，如图2和图17、图18所示，所述盖板10沿Z轴方向设于所述电池组壳体40，所述盖板10与所述电池组壳体40固定。优选的，所述盖板10大致呈矩形，所述盖板10可限制外界部件与电池组壳体40内的部件直接接触。可以理解的是：盖板10与电池组壳体40的固定方式可为螺接，但不限于利用螺接方式进行固定，也可以为其他固定方式，例如：焊接、铆接等等。
在一些实施例中，所述盖板10上设置有第四通孔101，所述第四通孔101便于电路板90和第二检测件80之间的连接，所述第二检测件80的一端穿过所述第四通孔101后连接到电路板90。可以理解的是：所述盖板10的形状不限于矩形，在不同形状的电池组01中，所述盖板10的形状可根据不同的电池组进行替换。例如：当电池组的整体形状为圆柱形时，所述盖板10可设置成圆形。
在一些实施例中，所述盖板10上设置有第五通孔102和第六通孔103，所述第五通孔102和第六通孔103用于供所述第一连接部2221a和第二连接部2222b伸出外接其他部件。
在一些实施例中，所述盖板10靠近所述电芯模组的一侧设置有凹槽104，所述凹槽104用于放置所述第二检测件80。在一些实施例中，所述盖板10靠近所述电芯模组的一侧为平板状结构，所述第二检测件80通过粘接等方式设于所述盖板10。
对于上述电池组壳体40，如图2和图19所示，所述电池组壳体40长方体结构，所述电池组壳体40设置有收容空间40a以及连通所述收容空间40a的开口。所述电池组壳体40包括四个侧壁401和底壁402， 所述四个侧壁401和底壁402围合形成所述收容空间40a，所述电芯模组20设置于所述收容空间40a内，并通过盖板10盖设于所述开口处，将电芯模组20包覆与所述电池组壳体40内。
可以理解的是，所述电池组壳体40的形状不限于此，也可以为其他结构，例如：当所述电芯模组20呈圆形时，所述电池组壳体40的形状可为圆柱形。所述电池组壳体40的形状可根据所述电芯模组20的形状进行替换。
在一些实施例中，所述电池组壳体40与盖板10的固定方式可为卡扣固定方式。可以理解的是，所述电池组壳体40和盖板10的固定方式不限于此，也可以为其方式，例如：利用粘胶将两者粘结固定等等。
在本申请实施例中，通过设置有盖板10、电芯模组20、第一树脂层30、电池组壳体40、至少一个第一检测件50和第一限位件60，其中，电芯模组20收容于电池组壳体40内，并通过第一树脂层30固定，盖板10固定于电池组壳体40，电芯模组20包括多个沿第一方向Z堆叠设置的电芯21，每个电芯21包括电极组件211、用于容纳电极组件211的电芯壳体、以及电连接电极组件211的极耳213，电芯壳体包括密封部2121。极耳213从密封部2121沿第二方向X延伸出电芯壳体，此外，一第一检测件50设置于相邻电芯21的密封部2121之间，第一检测件50与电芯模组20连接，第一检测件50用于对电芯21的极耳213的温度进行检测，第一限位件60设置于电芯21的密封部2121之间，第一限位件60对第一检测件50进行固定，这样设置，由于极耳213连接电芯21内部，极耳213处的温升与电芯21内部温升接近，利用第一限位件60将第一检测件50限位于电芯21的密封部2121之间，第一检测件50对极耳213处的温升进行检测，能实现对电芯的温升及时监控，降低电池包在充放电过程出现热失控的风险。
本申请还提供了一种用电设备的实施例，用电设备包括以上的电池组，所述用电设备包括但不限于二轮电动车，储能设备，手持电动工具等，电池组的功能和结构可参阅上述实施例，此处不再一一赘述。
以上所述仅为本申请的实施例，并非因此限制本申请的专利范围， 凡是利用本申请说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本申请的专利保护范围内。

Claims (11)

  1. 一种电池组，包括：盖板、电芯模组、第一树脂层和电池组壳体，所述电芯模组收容于所述电池组壳体内，并通过所述第一树脂层固定，所述盖板固定于所述电池组壳体，其特征在于，
    电芯模组包括多个沿第一方向堆叠设置的电芯，每个电芯包括电极组件、用于容纳所述电极组件的电芯壳体、以及电连接至所述电极组件的极耳，所述电芯壳体包括密封部，所述极耳从所述密封部沿第二方向延伸出所述电芯壳体；
    至少一个第一检测件，一所述第一检测件设置于所述相邻电芯的密封部之间，所述第一检测件与所述电芯模组连接，所述第一检测件用于对所述电芯的极耳的温度进行检测；
    第一限位件，所述第一限位件设置于所述相邻电芯的密封部之间，所述第一限位件对所述第一检测件进行限位。
  2. 根据权利要求1所述的电池组，其特征在于，
    所述第一限位件设置有限位孔，所述第一检测件设置于所述限位孔内。
  3. 根据权利要求2所述的电池组，其特征在于，
    所述电芯模组包括转接组件，所述转接组件包括转接板，所述转接板设置于所述电芯靠近所述极耳的一端，所述转接板上设置有至少一个第一通孔，沿与所述第二方向相反方向观察，一所述第一通孔与一所述限位孔至少部分重叠，一所述第一检测件远离所述限位孔的一端从所述第一通孔伸出并与所述转接板连接。
  4. 根据权利要求3所述的电池包，其特征在于，
    所述转接组件包括转接件，所述转接件设置于所述转接板，所述转接件包括第一转接件和第二转接件，所述第一转接件连接于所述电芯的 一极耳，所述第二转接件连接于所述电芯的另一极耳。
  5. 根据权利要求4所述的电池包，其特征在于，
    所述转接组件包括第一绝缘件，所述第一绝缘件设置于所述第二转接件和所述转接板之间。
  6. 根据权利要求3所述的电池包，其特征在于，
    所述电芯包括相邻设置的第一电芯和第二电芯，所述第一电芯包括第一电芯壳体和第一极耳，所述第一极耳沿第二方向伸出所述第一电芯壳体，所述第二电芯包括第二电芯壳体和第二极耳，所述第二极耳沿第二方向伸出所述第二电芯壳体；
    所述转接组件包括导电片，所述导电片设置于所述转接板背离所述电芯的一表面；
    所述转接板上设置第二通孔和第三通孔，所述第二通孔和第三通孔位于所述导电片的两侧，所述第一极耳穿过所述第二通孔连接于所述导电片背离所述转接板的一表面，所述第二极耳穿过所述第三通孔连接于所述第一极耳背离所述导电片的一表面。
  7. 根据权利要求3所述的电池包，其特征在于，
    所述转接板上设置有散热孔。
  8. 根据权利要求1所述的电池组，其特征在于，
    包括第二绝缘件，所述第二绝缘件的一侧设置于所述电芯靠近所述盖板的一表面；
    所述电池组还包括第二检测件，所述第二检测件设置于所述盖板靠近所述电芯的一侧，所述第二检测件包括第一检测部、第二检测部和引导板，所述第一检测部的一侧固定于所述盖板，所述第一检测部的另一侧连接于所述引导板的一侧，所述引导板的另一侧连接所述第二检测部的一侧，所述第二检测部的另一侧贴合于所述第二绝缘件的另一侧。
  9. 根据权利要求8所述的电池组，其特征在于，
    所述第二检测件还包括粘接区，所述粘接区用于连接所述第一检测部和第二检测部，并使得所述第一检测部和所述第二检测部之间形成间隙。
  10. 根据权利要求8所述的电池组，其特征在于，
    包括电路板，所述电路板设置于所述盖板背离所述电芯模组的一表面；
    所述盖板上设置有第四通孔；
    所述引导板上设置有连接端，所述连接端穿过所述第四通孔伸出所述盖板连接于所述电路板。
  11. 一种用电设备，其特征在于，包括权利要求1-10任一项所述的电池组。
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