WO2021078080A1 - 电池模块、电池组及使用电池单体作为电源的装置 - Google Patents

电池模块、电池组及使用电池单体作为电源的装置 Download PDF

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Publication number
WO2021078080A1
WO2021078080A1 PCT/CN2020/121721 CN2020121721W WO2021078080A1 WO 2021078080 A1 WO2021078080 A1 WO 2021078080A1 CN 2020121721 W CN2020121721 W CN 2020121721W WO 2021078080 A1 WO2021078080 A1 WO 2021078080A1
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WO
WIPO (PCT)
Prior art keywords
cover plate
battery module
battery
along
wire harness
Prior art date
Application number
PCT/CN2020/121721
Other languages
English (en)
French (fr)
Inventor
王旭光
许文才
姚己华
曹根
Original Assignee
宁德时代新能源科技股份有限公司
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 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to JP2022523491A priority Critical patent/JP7490056B2/ja
Priority to KR1020227012840A priority patent/KR20220066119A/ko
Priority to EP20879220.0A priority patent/EP3930086B1/en
Publication of WO2021078080A1 publication Critical patent/WO2021078080A1/zh
Priority to US17/563,933 priority patent/US20220123422A1/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
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/271—Lids or covers for the racks or secondary casings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
    • B60L50/00—Electric propulsion with power supplied within the vehicle
    • B60L50/50—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells
    • B60L50/60—Electric propulsion with power supplied within the vehicle using propulsion power supplied by batteries or fuel cells using power supplied by batteries
    • B60L50/64—Constructional details of batteries specially adapted for electric vehicles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/102—Primary casings; Jackets or wrappings characterised by their shape or physical structure
    • H01M50/103—Primary casings; Jackets or wrappings characterised by their shape or physical structure prismatic or rectangular
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
    • H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
    • H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • 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
    • H01M50/298—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by the wiring of battery packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—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
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2250/00—Fuel cells for particular applications; Specific features of fuel cell system
    • H01M2250/20—Fuel cells in motive systems, e.g. vehicle, ship, plane
    • 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
    • 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
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
    • 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
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/60—Other road transportation technologies with climate change mitigation effect
    • Y02T10/70—Energy storage systems for electromobility, e.g. batteries

Definitions

  • This application relates to the technical field of energy storage devices, and in particular to a battery module, a battery pack, and a device using battery cells as a power source.
  • the battery module includes a cover plate, a battery cell, and a wire harness isolation board assembly, wherein the wire harness isolation board assembly is connected with the cover plate, so that the wire harness isolation board assembly is protected by the cover plate.
  • the wiring harness isolation board component and the cover are usually connected by a connection method such as a snap fit or a rivet connection.
  • the present application provides a battery module, a battery pack, and a device that uses battery cells as a power source, and the connection between the wiring harness isolation plate assembly of the battery module and the cover plate is highly reliable.
  • the first aspect of the embodiments of the present application provides a battery module, the battery module includes: a battery cell, a plurality of the battery cells are stacked along a length direction; a cover plate, the cover plate is located along the height of the battery cell The end of the direction; the wire harness isolation board assembly, along the height direction, the wire harness isolation board assembly is located between the cover plate and the battery cell; wherein, the cover plate and the wire harness isolation board assembly are plug-connected .
  • the wire harness isolation board assembly is provided with an insertion hole
  • the cover plate is provided with an insertion piece
  • the insertion piece is plug-connected with the insertion hole.
  • the size b of the plug piece is larger than the size a of the plug hole that is plugged with it.
  • the plug-in piece includes a body portion and a protruding portion; along the extension direction of the plug hole, both ends of the body portion are connected with the protruding portion.
  • the wire harness isolating plate assembly further includes a limiting portion, the limiting portion includes a first end portion and a second end portion that are oppositely disposed; the body portion has an opening, and the first end portion The end portion is connected to the side wall of the opening, and the second end portion extends between the wire harness isolation plate assembly and the battery cell through the opening; the insertion hole has a hole close to the battery cell The second end is located on the inner side of the inner side wall.
  • the cover plate further includes a cover plate body and a first extension part, the first extension part extending along the height direction of the battery module; along the height direction, the cover plate body and the first extension
  • the insert piece is connected to both ends of the first extension part, and the insert piece is close to the battery cell.
  • the cover plate is provided with a slideway, and the wire harness isolation plate assembly slides along the slideway.
  • the cover plate includes a cover plate body and a second extension part, the second extension part is connected with the cover plate body; the second extension part includes a curling edge, the curling edge The slideway is formed with the second extension part.
  • the wire harness isolation plate assembly is provided with the insertion hole, and the cover plate is provided with the insertion piece; along the battery module On the side of the width direction of the cover plate, the cover plate is provided with the slideway, and the slideway extends along the length direction.
  • the cover plate is provided with notches, and the notches are located at both ends of the cover plate in the length direction, and/or the notches are located at both sides of the cover plate in the width direction.
  • a second aspect of the embodiments of the present application provides a battery pack.
  • the battery pack includes a box body and the above-mentioned battery module, and the battery module is fixed in the box body.
  • a third aspect of the embodiments of the present application provides a device using a battery cell as a power source.
  • the device includes: a power source for providing driving force to the device; and, configured to provide the power to the power source.
  • a battery module as described above that provides electrical energy.
  • the two are connected by plugging, so that the two have high connection reliability, thereby improving the cover and/or wire harness isolation plate assembly.
  • the reliability of the connection of the wire harness isolation board assembly it also helps to reduce the thickness of the cover plate and the wire harness isolation board assembly, thereby helping to increase the energy density of the battery module.
  • FIG. 1 is a schematic structural diagram of a battery module provided by this application in a specific embodiment
  • FIG. 2 is a schematic structural diagram of the upper cover in FIG. 1 after the upper cover is matched with the wire harness isolation plate assembly in the first specific embodiment;
  • Figure 3 is a partial enlarged view of part I in Figure 1;
  • Fig. 4 is a top view of the wire harness isolation plate assembly in Fig. 1 in a specific embodiment
  • Figure 5 is a partial enlarged view of part II in Figure 4.
  • Figure 6 is a partial enlarged view of part III in Figure 4.
  • Fig. 7 is a schematic structural diagram of the upper cover in Fig. 2 in a specific embodiment
  • Figure 8 is a partial enlarged view of part IV in Figure 7;
  • Figure 9 is a partial enlarged view of part V in Figure 8.
  • Figure 10 is a top view of Figure 2;
  • Figure 11 is a cross-sectional view taken along the line A-A of Figure 10;
  • Figure 12 is a partial enlarged view of part VI in Figure 11;
  • FIG. 13 is a schematic structural view of the upper cover in FIG. 1 and the wiring harness isolation plate assembly in a second specific embodiment after being matched;
  • Figure 14 is a partial enlarged view of part VII in Figure 13;
  • Figure 15 is a top view of Figure 13;
  • Figure 16 is a cross-sectional view taken along the line B-B of Figure 15;
  • Figure 17 is a cross-sectional view taken along the line C-C in Figure 15;
  • FIG. 18 is a schematic structural diagram of a battery pack provided by this application in a specific embodiment.
  • A- battery module
  • the embodiments of the present application provide a device, battery pack, battery module A, and connection assembly 1 that use battery cell 2 as a power source.
  • the device that uses battery cell 2 as a power source includes mobile equipment such as vehicles, ships, and small airplanes.
  • the device includes a power source for providing driving force to the device, and the power source may be configured as a battery module A that provides electrical energy to the power source.
  • the driving force of the device can be all electric energy, and it can also include electric energy and other energy sources (such as mechanical energy).
  • the power source can be battery module A (or battery pack), and the power source can also be battery module A (or battery Group) and engine, etc. Therefore, any device capable of using the battery cell 2 as a power source is within the protection scope of the present application.
  • the vehicle in the embodiment of the present application may be a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle, etc.
  • the vehicle may include a battery pack and a vehicle body.
  • the battery pack is arranged on the vehicle body.
  • the vehicle body is also provided with a drive motor, and the drive motor is electrically connected to the battery pack.
  • the battery pack provides electric power, and the drive motor is connected to the vehicle body through a transmission mechanism.
  • the wheels on the main body of the vehicle are connected to drive the vehicle.
  • the battery pack can be horizontally arranged at the bottom of the vehicle body.
  • the battery pack includes a box body B and the battery module A of the present application, wherein the box body B has a containing cavity B3, the battery module A is accommodated in the containing cavity B3, the number of battery modules A can be one or A plurality of battery modules A are arranged in the accommodating cavity B3.
  • the type of box B is not limited, and can be a frame-shaped box, a disk-shaped box, or a box-shaped box.
  • the box body B may include a lower box body B2 that accommodates the battery module A and an upper box body B1 that is closed with the lower box body B2.
  • the battery module A includes a plurality of battery cells 2 and a frame structure for fixing the battery cells 2, wherein the battery cells 2 can be a secondary battery that can be repeatedly charged and discharged.
  • the battery cells 2 can be a secondary battery that can be repeatedly charged and discharged.
  • a plurality of battery cells 2 are stacked on each other, and the stacking direction of each battery cell 2 is defined as the length direction X described in this application.
  • the battery cell 2 includes an electrode lead 21, and each battery cell 2 includes a positive electrode lead and a negative terminal.
  • adjacent battery cells 2 are electrically connected, which can be connected in series, parallel, or Hybrid connection and other connection methods.
  • the frame structure includes end plates 3, which are located at both ends of the battery cells 2 along the length direction X, and are used to restrict the movement of the battery cells 2 along the length direction X, and the end plates 3 and the battery An insulating cover 4 is arranged between the cells 2, and the insulating cover 4 is used to achieve insulation between the end plates 3 and the battery cells 2.
  • the frame structure may further include side plates (not shown in the figure).
  • the two side plates are located on both sides of the battery cell 2 in the width direction Y, and the side plates and the end plates 3 Are connected to form a frame structure; in another specific embodiment, the frame structure may not be provided with side plates, and after the battery cells 2 are stacked, they are connected by the first cable tie 5 and the second cable tie 6, and the end plate 3 and The two straps form the above-mentioned frame structure.
  • the frame structure may further include a cover plate 7 located at the end of the battery cell 2 in the height direction Z for restricting the movement of the battery cell 2 in the height direction Z.
  • the battery module A also includes a wire harness isolation plate assembly 1, which is placed close to one end of the electrode lead 21 of the battery cell 2 and located between the cover plate 7 and the battery cell 2. Meanwhile, in the embodiment shown in FIG. 1, the wire harness isolation plate assembly 1 is located above the battery cell 2 and below the cover plate 7. As shown in FIG. 1, the wiring harness isolation board assembly 1 includes a connecting piece 13 for connecting the electrode leads 21 of the battery cell 2. As shown in FIG. 4, the wiring harness isolation board assembly 1 includes a plurality of connecting pieces 13 , The battery cells 2 are connected by a connecting piece 13.
  • the positive electrode lead of a battery cell 2 and the negative electrode lead of the adjacent battery cell 2 are connected through the connecting piece 13 And the setting position of each connecting piece 13 changes with the position of the battery cell 2 and the connection mode.
  • the cover plate 7 and the wire harness isolation plate assembly 1 are connected by snapping or riveting.
  • the above two connection methods have higher connection reliability when the thickness of the cover plate 7 and the wire harness isolation plate assembly 1 is large.
  • the thickness of the cover plate 7 and the wire harness isolating plate assembly 7 is gradually reduced.
  • the cover plate 7 and/or the wire harness isolating plate assembly 1 are connected by a buckle or When riveting, the connection reliability is reduced.
  • the cover plate 7 is plug-connected to the wire harness isolation plate assembly 1.
  • connection method of plug connection between the cover plate 7 and the wire harness isolation plate assembly 1 can be applied to the case where the thickness of the cover plate 7 and the wire harness isolation plate assembly 1 is small, and when the thickness of the two is small, either The plug-in connection between them still has high connection reliability, so that while improving the reliability of the connection between the cover plate 7 and the wire harness isolation plate assembly 1, it also helps to reduce the thickness of the cover plate 7 and the wire harness isolation plate assembly 1. This helps to increase the energy density of battery module A.
  • the wiring harness isolation board assembly 1 is provided with an insertion hole 12, and the cover plate 7 is provided with an insertion piece 72.
  • the piece 72 is plug-connected with the plug hole 12.
  • the cover plate 7 includes a cover plate body 7, and the edge of the cover plate body 71 is provided with an inserting piece 72, and the inserting piece 72 corresponds to the position of the inserting hole 12 provided in the wire harness isolation board assembly 1, and the inserting piece 72 Insert into the plug hole 12 to realize the plug connection between the cover plate (7) and the wire harness isolating plate assembly (1), and they are fixed as a whole.
  • the wire harness isolation board assembly 1 includes an insulating film 11 and a connecting sheet 13, wherein the insulating film 11 includes a first insulating film 111 and a second insulating film 112, and the first insulating film 111 and the second insulating film 112 They are respectively located at both ends of the connecting piece 13 in the height direction Z, and the two are connected by heat and pressure, and the first insulating film 111 and the second insulating film 112 are heated and pressed into one body, thereby fixing the connecting piece 13 to the first insulating film 111 And the second insulating film 112. As shown in FIG. 5 and FIG.
  • the first insulating film 111 and the second insulation film 112 form a hot pressing edge 113
  • the hot pressing edge 113 is located in the wire harness isolation board assembly 1. Both ends along the length direction X and both sides along the width direction Y, and the hot pressing edge 113 includes the first insulating film 111 and the second insulating film 112 along the length direction X ends and the width direction Y both sides, The connecting piece 13 is not included.
  • the hot pressing edge 113 is used for inserting with the cover plate 7. Therefore, the above-mentioned insertion hole 12 is provided in the hot pressing edge 113, so as to avoid the influence on the connecting piece 13 after the inserting hole 12 is opened. .
  • the hot pressing edge 113 has a plastic structure. Compared with the cover plate 7, the hot pressing edge 113 has lower rigidity. Therefore, in this embodiment, the rigidity of the insert piece 72 can be improved, thereby further improving the cover plate 7 and the wire harness isolating plate assembly 1. Connection reliability.
  • the size b of the plug piece 72 is greater than the size a of the plug hole 12 to which it is plugged.
  • the extending direction of the insertion hole 12 refers to the size of the larger end of the insertion hole 12.
  • the plug hole 12 includes a first plug hole 121 and a second plug hole 122
  • the plug piece 72 includes a first plug piece 725 and a second plug piece 726, the first plug piece 725 and the first plug hole 121 is inserted, and the second insertion piece 726 is inserted into the second insertion hole 122.
  • the extending direction of the first insertion hole 121 is the length direction X (the dimension a of the length direction X is larger than the dimensions in other directions), that is, the length of the first insertion hole 121 is a, and
  • the first insertion piece 725 cooperates with the first insertion hole 121 to limit the relative movement of the cover plate 7 and the wire harness isolation plate assembly 1 along the width direction Y and the height direction Z; as shown in FIG.
  • the second insertion hole 122 The extension direction of is the width direction Y (the dimension a of the width direction Y is larger than the dimensions in other directions), that is, the length of the second insertion hole 122 is a, and the second insertion piece 726 is matched with the second insertion hole 122 ,
  • the relative movement of the cover plate 7 and the wire harness isolation plate assembly 1 along the length direction X and the height direction Z can be restricted.
  • the inserting piece 72 when the size b of the inserting piece 72 is greater than the size a of the inserting hole 12 to which it is inserted, after the inserting piece 72 is inserted into the inserting hole 12, the inserting piece 72 can be reduced to fall out of the inserting hole 12 , Thereby further improving the reliability of the plug connection between the two.
  • the first insertion hole 121 and the second insertion hole 122 are both oblong holes, and the arc-shaped structure at both ends of the oblong hole can reduce the occurrence of tearing of the insertion hole 12 Therefore, the strength of the plug hole 12 is improved.
  • the width of each insertion hole 12 (the size of the smaller end) can be 0.5-1 millimeter (mm), for example, the width of the aforementioned insertion hole 12 can be 0.8 mm, 0.9 mm, etc. In this embodiment, when the width of the insertion hole 12 is too large, the risk of the insertion piece 72 falling out of the insertion hole 12 is higher.
  • the width of the plug-in hole 12 can be set reasonably in consideration of the above two factors, instead of being limited to 0.5-1 mm.
  • the plug-in piece 72 includes a body portion 721 and a protruding portion 722. Along the extension direction of the plug hole 12, both ends of the body portion 721 are connected with the protruding portion. 722.
  • the protruding portions 722 on both sides of the main body portion 721 can further reduce the risk of the insertion piece 72 coming out of the insertion hole 12, thereby further improving the reliability of the connection between the cover plate 7 and the wiring harness isolation board assembly 1. .
  • the protruding portion 722 includes an arc-shaped wall 722a, and the arc-shaped wall 722a can reduce the wear of the inserting piece 72 and the inserting hole 12 during the insertion process, and improve the structural strength.
  • the wire harness isolating plate assembly 1 further includes a limiting portion 73 for restricting the insertion piece 72 from coming out of the insertion hole 12, thereby further Improve the plug reliability of the two.
  • the limiting portion 73 includes a first section 731 and a second section 732, the first section 731 has a first end 731a, the second section 732 has a second end 732a, and the first end 731a and the second end 731a
  • the two end portions 732a are disposed opposite to each other, that is, the first end portion 731a and the second end portion 732a are disposed at both ends of the limiting portion 73 in a direction away from each other.
  • the main body 721 has an opening 724, and the first end 731a is connected to the side wall of the opening 724.
  • the side wall is a side wall close to the end of the main body 721 in the width direction Y.
  • the two end portions 732 a extend into the space between the wire harness isolation plate assembly 1 and the battery cell 2 through the opening 724, that is, the second end portion 732 a extends below the cover plate 7 via the opening 724.
  • the second section 732 is bent relative to the first section 731, and the bending direction is toward the battery cell 2 (that is, the second section 732 is bent downward relative to the first section 731 After the second section 732 is bent, it extends under the cover plate 7 from the opening 724.
  • the insertion hole 12 has an inner side wall 123 close to the battery cell 2.
  • the second end 732a of the 73 is located inside the inner side wall 123.
  • the second end 732a here is located inside the inner side wall 123, which means that the second end 732a of the limiting portion 73 is closer to the battery cell 2 side than the inner side wall 123.
  • the inserting piece 72 is provided with a limiting portion 73, and when the second end 732a of the limiting portion 73 is located inside the inner side wall 123 of the inserting hole 12, the limiting portion 73 can lower the inserting piece 72 from The risk of falling out of the socket 12.
  • the inserting piece 72 may be provided with a plurality of limiting portions 73, and the limiting portions 73 are arranged at intervals, so as to further reduce the risk of the inserting piece 72 coming out of the insertion hole 12. And in the insert 72, whether to provide the limiting portion 73 and the number of the limiting portions 73 are specifically determined according to the length b of the insert 72, when the length b of the insert 72 is small, the insert 72 may not be provided with the limiting portion 73. When the length b of the inserting piece 72 is large, the inserting piece 72 can be provided with a plurality of limiting portions 73. Therefore, in this embodiment, the number of limiting portions 73 is not limited.
  • the insert piece 72 further includes a first extension portion 723, the first extension portion 723 extends along the height direction Z, and one end of the first extension portion 723 is connected to the cover body 71 , The other end is connected to the body portion 721 of the inserting piece 72, so that the inserting piece 72 is close to the battery cell 2.
  • the inserting piece 72 is located below the cover body 71. As shown in FIG.
  • the arrangement of the first extension 723 can provide an installation position for the hot pressing edge 113 of the wire harness isolating plate assembly 1, that is, after plugging, along the height direction Z, the hot pressing edge 113 is located at the edge of the insert 72 Between the main body portion 721 and the cover main body 71, and the hot pressing edge 113 abuts the main body portion 721.
  • a plurality of first inserts 725 are provided at both ends of the cover plate 7, and the first inserts 725 are arranged at intervals. Accordingly, the wire harness A plurality of first insertion holes 121 are provided at both ends of the isolation board assembly 1, and each first insertion hole 121 is arranged at intervals. Wherein, the arrangement position and number of the first insertion piece 725 and the first insertion hole 121 can be determined according to the size of the battery module A along the length direction X.
  • a plurality of second inserts 726 are provided on both sides of the cover plate 7, and each of the second inserts 726 is arranged at intervals.
  • a plurality of second inserts 726 are arranged on both sides of the wire harness isolation plate assembly 1.
  • the second insertion holes 122, and the second insertion holes 122 are spaced apart. Wherein, the position and number of the second plug-in piece 726 and the second plug-in hole 122 can be determined according to the size of the battery module A in the width direction Y.
  • the insert piece 72 and the cover body 71 can be integrally stamped and formed, and at the same time, the limiting portion 73 and the insert piece 72 can be integrally stamped and formed.
  • the cover body 71 of the cover plate 7 is provided with a slideway 742, and the hot pressing edge 113 of the above-mentioned wire harness isolating plate assembly 1 can follow the slideway 742. slide.
  • connection between the wire harness isolating plate assembly 1 and the sliding rail 742 is also a plug-in connection, that is, the hot pressing edge 113 of the wire harness isolating plate assembly 1 is inserted into the sliding rail 742, and at the same time, the two can slide relative to each other. Way to achieve plugging. Therefore, the plug connection method in this embodiment can not only improve the reliability of the connection between the wire harness isolation plate assembly 1 and the cover plate 7, but also simplify the structure and process of plug connection. At the same time, the wire harness isolation plate assembly 1 and The relative sliding of the cover 7 can also adjust the relative position of the two.
  • slideways 742 are provided on both sides of the cover plate 7, and the slideways 742 extend along the length direction X.
  • the hot pressing edges 113 on both sides of the wire harness isolation plate assembly 1 along the width direction Y can move along the corresponding slide 742, thereby restricting the relative movement of the wire harness isolation plate assembly 1 and the cover plate 7 along the height direction Z and the width direction Y.
  • both ends of the cover plate 7 are provided with second insert pieces 726, and the second insert pieces 726 can be provided with a limiting portion 73.
  • the wiring harness isolation plate assembly 1 The hot pressing edges on both sides of the length direction X are provided with a second insertion hole 122, and the second insertion piece 726 is inserted into the second insertion hole 122, thereby restricting the wiring harness isolation plate assembly 1 and the cover plate 7 along the height direction Z and the length direction X move relative to each other.
  • the slide way 742 and the insert 72 can also be arranged in a manner that the slide way 742 is provided at both ends along the length direction X, and the slide way 742 extends along the width direction Y and extends along the width direction Y.
  • a first inserting piece 725 is provided on both sides of the, and the first inserting piece 725 can be provided with a limiting portion 73.
  • the cover plate 7 includes a cover plate body 71 and a second extension portion 74, the second extension portion 74 extends along the length direction X, or the second extension portion 74 extends along the width direction Y , And the second extension portion 74 is connected to the cover body 71.
  • the second extension portion 74 includes a curling edge 741, the curling edge 741 is bent relative to the second extension portion 74, and the curling edge 741 and the second extension portion 74 enclose a slide 742.
  • the second extension 74 is integrally formed with the cover body 71, and at the same time, the bead 741 is formed by integral stamping on the second extension 74, that is, the slide 742 is integrally formed by stamping the cover 7 .
  • the above-mentioned forming method of the slide 742 is not limited to this, and it can also be formed by welding the slide 742 on the cover body 71.
  • the slide 742 and the cover 7 are integrally formed to simplify the processing process. Advantages, and make the reliability of the slide 742 higher.
  • the curling edge 741 has certain elasticity.
  • the slideway 742 is not matched with the wire harness isolating plate assembly 1, the curling edge 741 abuts against the second extension portion 74 under the action of elasticity, and the slideway
  • the hot pressing edge 113 of the wire harness isolating plate assembly 1 can overcome the elastic force of the curling edge 741 and the second extension portion 74, thereby extending into the gap between the curling edge 741 and the second extension portion 74 Inside the chute 742.
  • both ends of the cover plate 7 are provided with notches 75, and along the width direction Y, both sides of the cover plate 7 are provided with notches 75.
  • the setting of the notches 75 can facilitate The insertion between the insertion piece 72 and the insertion hole 12 is realized, and at the same time, the arrangement of the notch 75 can also facilitate the insertion between the sliding rail 742 and the wire harness isolation board assembly 1.
  • the wiring harness isolation board assembly 1 and the cover plate 7 are plug-in-connected.
  • the plug-in connection can still ensure high connection reliability between the two .

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Abstract

本申请涉及储能器件技术领域，尤其涉及一种电池模块、电池组及使用电池单体作为电源的装置，所述电池模块包括：电池单体，多个所述电池单体沿长度方向堆叠；盖板，所述盖板位于所述电池单体沿高度方向的端部；线束隔离板组件，沿高度方向，所述线束隔离板组件位于所述盖板与所述电池单体之间；其中，所述盖板与所述线束隔离板组件插接连接。本申请中，当盖板和/或线束隔离板组件的厚度较小时，二者之间通过采用插接的方式连接，使得二者之间具有较高的连接可靠性，从而在提高盖板与线束隔离板组件连接可靠性的同时，还有助于减小盖板与线束隔离板组件的厚度，从而有助于提高电池模块的能量密度。

Description

电池模块、电池组及使用电池单体作为电源的装置
相关申请的交叉引用
本申请要求享有于2019年10月21日提交的名称为“电池模块、电池组及使用电池单体作为电源的装置”的中国专利申请201921769178.7的优先权，该申请的全部内容通过引用并入本文中。
技术领域
本申请涉及储能器件技术领域，尤其涉及一种电池模块、电池组及使用电池单体作为电源的装置。
背景技术
电池模块包括盖板、电池单体和线束隔离板组件，其中，该线束隔离板组件与盖板连接，从而通过盖板对线束隔离板组件起到防护作用。该线束隔离板组件与盖板之间通常通过卡扣配合或等铆钉连接等连接方式连接。
但是，线束隔离板组件与盖板之间通过卡扣或铆钉连接时，二者的连接可靠性较差，影响电池模块的工作。
发明内容
本申请提供了一种电池模块、电池组及使用电池单体作为电源的装置，该电池模块的线束隔离板组件与盖板之间的连接可靠性较高。
本申请实施例第一方面提供一种电池模块，所述电池模块包括：电池单体，多个所述电池单体沿长度方向堆叠；盖板，所述盖板位于所述电池单体沿高度方向的端部；线束隔离板组件，沿高度方向，所述线束隔离板组件位于所述盖板与所述电池单体之间；其中，所述盖板与所述线束隔离板组件插接连接。
在一种可能的设计中，所述线束隔离板组件设置有插接孔，所述盖板设置有插片，所述插片与所述插接孔插接连接。
在一种可能的设计中，沿所述插接孔的延伸方向，所述插片的尺寸b大于与其插接的所述插接孔的尺寸a。
在一种可能的设计中，所述插片包括本体部和凸出部；沿所述插接孔的延伸方向，所述本体部的两端均连接有所述凸出部。
在一种可能的设计中，所述线束隔离板组件还包括限位部，所述限位部包括相对设置的第一端部和第二端部；所述本体部具有开口，所述第一端部与所述开口的侧壁连接，所述第二端部经所述开口伸入所述线束隔离板组件与所述电池单体之间；所述插接孔具有靠近所述电池单体的内侧壁，所述第二端部位于所述内侧壁的内侧。
在一种可能的设计中，所述盖板还包括盖板本体和第一延伸部，所述第一延伸部沿所述电池模块的高度方向延伸；沿高度方向，所述盖板本体与所述插片连接于所述第一延伸部的两端，且所述插片靠近所述电池单体。
在一种可能的设计中，所述盖板设置有滑道，所述线束隔离板组件沿所述滑道滑动。
在一种可能的设计中，所述盖板包括盖板本体和第二延伸部，所述第二延伸部与所述盖板本体连接；所述第二延伸部包括卷边，所述卷边与 所述第二延伸部形成所述滑道。
在一种可能的设计中，沿所述电池模块的长度方向的端部，所述线束隔离板组件设置有所述插接孔，所述盖板设置有所述插片；沿所述电池模块的宽度方向的侧部，所述盖板设置有所述滑道，且所述滑道沿长度方向延伸。
在一种可能的设计中，所述盖板设置有缺口，所述缺口位于所述盖板沿长度方向的两端，和/或，所述缺口位于所述盖板沿宽度方向的两侧。
本申请实施例第二方面提供一种电池组，电池组包括箱体和以上所述的电池模块，所述电池模块固定于所述箱体内。
本申请实施例第三方面提供一种使用电池单体作为电源的装置，所述装置包括：动力源，所述动力源用于为所述装置提供驱动力；和，被配置为向所述动力源提供电能的如以上所述的电池模块。
本申请中，当盖板和/或线束隔离板组件的厚度较小时，二者之间通过采用插接的方式连接，使得二者之间具有较高的连接可靠性，从而在提高盖板与线束隔离板组件连接可靠性的同时，还有助于减小盖板与线束隔离板组件的厚度，从而有助于提高电池模块的能量密度。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对本申请实施例中所需要使用的附图作简单地介绍，显而易见地，下面所描述的附图仅仅是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据附图获得其他的附图。
图1为本申请所提供电池模块在一种具体实施例中的结构示意图；
图2图1中上盖与线束隔离板组件配合后在第一种具体实施例中的结构示意图；
图3为图1中Ⅰ部分的局部放大图；
图4为图1中线束隔离板组件在一种具体实施例中的俯视图；
图5为图4中Ⅱ部分的局部放大图；
图6为图4中Ⅲ部分的局部放大图；
图7为图2中上盖在一种具体实施例中的结构示意图；
图8为图7中Ⅳ部分的局部放大图；
图9为图8中Ⅴ部分的局部放大图；
图10为图2的俯视图；
图11为图10的A-A向剖视图；
图12为图11中Ⅵ部分的局部放大图；
图13为图1中上盖与线束隔离板组件配合后在第二种具体实施例中的结构示意图；
图14为图13中Ⅶ部分的局部放大图；
图15为图13的俯视图；
图16为图15的B-B向剖视图；
图17为图15的C-C向剖视图；
图18为本申请所提供电池组在一种具体实施例中的结构示意图。
附图标记：
A-电池模块；
B-箱体；
B1-上箱体；
B2-下箱体；
B3-容纳腔；
1-线束隔离板组件；
11-绝缘膜；
111-第一绝缘膜；
112-第二绝缘膜；
113-热压边；
12-插接孔；
121-第一插接孔；
122-第二插接孔；
123-内侧壁；
13-连接片；
2-电池单体；
21-电极引线；
3-端板；
4-绝缘罩；
5-第一扎带；
6-第二扎带；
7-盖板；
71-盖板本体；
72-插片；
721-本体部；
722-凸出部；
722a-弧形壁；
723-第一延伸部；
724-开口；
725-第一插片；
726-第二插片；
73-限位部；
731-第一段；
731a-第一端部；
732-第二段；
732a-第二端部；
74-第二延伸部；
741-卷边；
742-滑道；
75-缺口。
此处的附图被并入说明书中并构成本说明书的一部分，示出了符合本申请的实施例，并与说明书一起用于解释本申请的原理。
具体实施方式
为了更好的理解本申请的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本申请保护的范围。
在本申请实施例中使用的术语是仅仅出于描述特定实施例的目的， 而非旨在限制本申请。在本申请实施例和所附权利要求书中所使用的单数形式的“一种”、“所述”和“该”也旨在包括多数形式，除非上下文清楚地表示其他含义。
应当理解，本文中使用的术语“和/或”仅仅是一种描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B这三种情况。另外，本文中字符“/”，一般表示前后关联对象是一种“或”的关系。
需要注意的是，本申请实施例所描述的“上”、“下”、“左”、“右”等方位词是以附图所示的角度来进行描述的，不应理解为对本申请实施例的限定。此外，在上下文中，还需要理解的是，当提到一个元件连接在另一个元件“上”或者“下”时，其不仅能够直接连接在另一个元件“上”或者“下”，也可以通过中间元件间接连接在另一个元件“上”或者“下”。
本申请实施例提供一种使用电池单体2作为电源的装置、电池组、电池模块A及连接组件1，其中，使用电池单体2作为电源的装置包括车辆、船舶、小型飞机等移动设备，该装置包括动力源，该动力源用于为装置提供驱动力，且该动力源可被配置为向动力源提供电能的电池模块A。其中，该装置的驱动力可全部为电能，也可包括电能和其他能源(例如机械能)，该动力源可为电池模块A(或电池组)，该动力源也可为电池模块A(或电池组)和发动机等。因此，只要能够使用电池单体2作为电源的装置均在本申请的保护范围内。
以车辆为例，本申请实施例中的车辆可为新能源汽车，该新能源汽车可为纯电动汽车，也可为混合动力汽车或增程式汽车等。其中，该车辆可包括电池组和车辆主体，该电池组设置于车辆主体，该车辆主体还设置有驱动电机，且驱动电机与电池组电连接，由电池组提供电能，驱动电机 通过传动机构与车辆主体上的车轮连接，从而驱动车辆行进。具体地，该电池组可水平设置车辆主体的底部。
如图18所示，电池组包括箱体B和本申请的电池模块A，其中，箱体B具有容纳腔B3，电池模块A收容于该容纳腔B3内，电池模块A的数量可为一个或多个，多个电池模块A排列布置于容纳腔B3内。箱体B的类型不受限制，可为框状箱体、盘状箱体或盒状箱体等。具体地，如图21所示，该箱体B可包括容纳电池模块A的下箱体B2和与下箱体B2盖合的上箱体B1。
更具体地，如图1所示，该电池模块A包括多个电池单体2和用于固定电池单体2的框架结构，其中，该电池单体2可以为能够重复充放电使用的二次电池，多个电池单体2相互堆叠，且各电池单体2堆叠的方向定义为本申请所述的长度方向X。其中，电池单体2包括电极引线21，且各电池单体2均包括正极电极引线和负极端子，在电池模块A中，相邻电池单体2之间电连接，具体可采用串联、并联或混联等连接方式。
具体地，该框架结构包括端板3，该端板3位于电池单体2沿长度方向X的两端部，用于限制电池单体2沿长度方向X的运动，且该端板3与电池单体2之间设置有绝缘罩4，该绝缘罩4用于实现端板3与电池单体2之间的绝缘。同时，在一种具体实施例中，该框架结构还可包括侧板(图中未示出)，两侧板位于电池单体2沿宽度方向Y的两侧，且该侧板与端板3连接，从而形成框架结构；在另一种具体实施例中，该框架结构可不设置侧板，电池单体2堆叠后，通过第一扎带5和第二扎带6连接，该端板3和两扎带形成上述框架结构。该框架结构还可包括盖板7，该盖板7位于电池单体2沿高度方向Z的端部，用于限制电池单体2沿高度方向Z运动。
同时，如图1所示，该电池模块A还包括线束隔离板组件1，该线束隔离板组件1放置于靠近电池单体2的电极引线21的一端，并位于盖板7与电池单体2之间，在如图1所示的实施例中，线束隔离板组件1位于电池单体2的上方、盖板7的下方。如图1所示，该线束隔离板组件1包括连接片13，连接片13用于连接电池单体2的电极引线21，如图4所示，该线束隔离板组件1包括多个连接片13，电池单体2之间通过连接片13连接，例如，当电池单体2串联时，一电池单体2的正极电极引线和与其相邻的电池单体2的负极电极引线通过连接片13连接且各连接片13的设置位置随电池单体2的位置以及连接方式改变。
相关技术中，盖板7与线束隔离板组件1之间通过卡扣连接或者铆接，上述两种连接方式在盖板7和线束隔离板组件1的厚度较大时具有较高的连接可靠性，但是，为了提高电池模块A的能量密度，盖板7和线束隔离板组件7厚度逐渐减小，当盖板7和/或线束隔离板组件1厚度较小时，二者之间通过卡扣连接或者铆接时，连接可靠性降低。为了解决该技术问题，本申请中，盖板7与线束隔离板组件1插接连接。
本申请中，盖板7与线束隔离板组件1之间插接连接的连接方式能够适用于盖板7与线束隔离板组件1的厚度较小的情况，且当二者厚度较小时二者之间的插接连接仍然具有较高的连接可靠性，从而在提高盖板7与线束隔离板组件1连接可靠性的同时，还有助于减小盖板7与线束隔离板组件1的厚度，从而有助于提高电池模块A的能量密度。
具体地，在一种具体实施例中，如图3、图5、图6和图8所示，该线束隔离板组件1设置有插接孔12，盖板7设置有插片72，该插片72与插接孔12插接连接。其中，盖板7包括盖板本体7，且该盖板本体71的边缘设置有插片72，且该插片72与设置于线束隔离板组件1的插接孔 12位置对应，将插片72插入插接孔12内，实现盖板(7)与线束隔离板组件(1)插接连接，固定为一体。
本实施例中，线束隔离板组件1包括绝缘膜11和连接片13，其中，该绝缘膜11包括第一绝缘膜111和第二绝缘膜112，该第一绝缘膜111与第二绝缘膜112分别位于连接片13沿高度方向Z的两端，且二者热压连接，将第一绝缘膜111与第二绝缘膜112加热压合为一体，从而将连接片13固定于第一绝缘膜111与第二绝缘膜112之间。如图5和图6所示，该线束隔离板组件1通过热压处理后，使第一绝缘膜111与第二绝缘膜112形成热压边113，该热压边113位于线束隔离板组件1沿长度方向X的两端以及沿宽度方向Y的两侧，且该热压边113包括第一绝缘膜111与第二绝缘膜112沿长度方向X两端以及沿宽度方向Y两侧的部分，不包括连接片13，该热压边113用于与盖板7插接，因此，上述插接孔12设置于该热压边113，从而能够避免开设插接孔12后对连接片13的影响。
同时，由于第一绝缘膜111与第二绝缘膜112为塑料膜，即热压边113为塑料结构，该热压边113与盖板7相比，其刚度较小，因此，本实施例中，插片72设置于盖板7、插接孔12设置于线束隔离板组件1(热压边113)时，能够提高插片72的刚度，从而进一步提高盖板7与线束隔离板组件1的连接可靠性。
具体地，沿插接孔12的延伸方向，插片72的尺寸b大于与其插接的插接孔12的尺寸a。其中，插接孔12的延伸方向指的是：该插接孔12中，其尺寸较大的一端的尺寸。且该插接孔12包括第一插接孔121和第二插接孔122，上述插片72包括第一插片725和第二插片726，该第一插片725与第一插接孔121插接，第二插片726与第二插接孔122插接。
如图5所示，该第一插接孔121的延伸方向为长度方向X(其长度 方向X的尺寸a大于其他方向的尺寸)，即该第一插接孔121的长度为a，且该第一插片725与第一插接孔121配合，能够限制盖板7与线束隔离板组件1沿宽度方向Y和高度方向Z的相对运动；如图6所示，该第二插接孔122的延伸方向为宽度方向Y(其宽度方向Y的尺寸a大于其他方向的尺寸)，即该第二插接孔122的长度为a，且该第二插片726与第二插接孔122配合，能够限制盖板7与线束隔离板组件1沿长度方向X和高度方向Z的相对运动。
本实施例中，该插片72的尺寸b大于与其插接的插接孔12的尺寸a时，插片72与插接孔12插接后，能够降低插片72从插接孔12中脱出的风险，从而进一步提高二者之间的插接可靠性。
更具体地，如图5和图6所示，该第一插接孔121与第二插接孔122均为长圆孔，该长圆孔两端的圆弧形结构能够降低插接孔12发生撕裂的风险，从而提高插接孔12的强度。同时，各插接孔12的宽度(尺寸较小的一端的尺寸)均可为0.5～1毫米(mm)，例如，上述插接孔12的宽度可为0.8mm、0.9mm等。本实施例中，插接孔12的宽度过大时，插片72从插接孔12中脱出的风险较高，插接孔12的宽度过小时，插片72不易插入，因此，在实际工况中，可综合考虑上述两方面的因素合理设置插接孔12的宽度，而不仅限于0.5～1mm。
在一种可能的设计中，如图8所示，该插片72包括本体部721和凸出部722，沿插接孔12的延伸方向，本体部721的两端均连接有该凸出部722。
本实施例中，该本体部721两侧的凸出部722能够进一步降低插片72从插接孔12中脱出的风险，从而进一步提高盖板7与线束隔离板组件1之间的连接可靠性。
如图8所示，该凸出部722包括弧形壁722a，该弧形壁722a能够降低插片72与插接孔12插接过程中二者的磨损，提高结构强度。
更具体地，如图8、图9和图12所示，该线束隔离板组件1还包括限位部73，该限位部73用于限制插片72从插接孔12中脱出，从而进一步提高二者的插接可靠性。其中，该限位部73包括第一段731和第二段732，该第一段731具有第一端部731a，第二段732具有第二端部732a，且该第一端部731a与第二端部732a相对设置，即第一端部731a与第二端部732a朝向相互远离的方向设置在限位部73两端。该插片72中，其本体部721具有开口724，该第一端部731a与开口724的侧壁连接，该侧壁为靠近本体部721沿宽度方向Y的端部的一侧侧壁，第二端部732a经开口724伸入线束隔离板组件1与电池单体2之间，即该第二端部732a经开口724伸入盖板7下方。
如图12所示，该限位部73中，第二段732相对于第一段731弯折，且弯折方向朝向电池单体2(即第二段732相对于第一段731向下弯折)，该第二段732弯折后，从开口724伸入盖板7下方，同时，如图12所示，该插接孔12具有靠近电池单体2的内侧壁123，上述限位部73的第二端部732a位于内侧壁123的内侧。这里的第二端部732a位于内侧壁123的内侧，是指限位部73的第二端部732a比内侧壁123更靠近电池单体2这一侧。
本实施例中，插片72设置限位部73，且该限位部73的第二端部732a位于插接孔12的内侧壁123的内侧时，该限位部73能够降低插片72从插接孔12中脱出的风险。
具体地，如图7所示，该插片72中，可设置有多个限位部73，且各限位部73间隔设置，从而进一步降低插片72从插接孔12中脱出的风 险。且该插片72中，是否设置限位部73以及限位部73的设置数量具体根据插片72的长度b确定，当插片72的长度b较小时，该插片72可不设置限位部73，当插片72的长度b较大时，该插片72可设置多个限位部73，因此，本实施例中，对限位部73的设置个数不作限定。
以上各实施例中，如图8所示，该插片72还包括第一延伸部723，该第一延伸部723沿高度方向Z延伸，且该第一延伸部723的一端连接盖板本体71，另一端连接插片72的本体部721，从而使得插片72靠近电池单体2，在图2所示的实施例中，插片72位于盖板本体71的下方。如图3所示，该第一延伸部723的设置能够为线束隔离板组件1的热压边113提供安装位置，即插接后，沿高度方向Z，该热压边113位于插片72的本体部721与盖板本体71之间，且该热压边113与本体部721抵接。
另一方面，如图4和图7所示，沿长度方向X，该盖板7的两端设置有多个第一插片725，且各第一插片725间隔设置，相应地，该线束隔离板组件1的两端设置有多个第一插接孔121，且各第一插接孔121间隔设置。其中，第一插片725与第一插接孔121的设置位置和设置数量可根据电池模块A沿长度方向X的尺寸确定。
同时，沿宽度方向Y，该盖板7的两侧设置有多个第二插片726，且各第二插片726间隔设置，相应地，该线束隔离板组件1的两侧设置有多个第二插接孔122，且各第二插接孔122间隔设置。其中，第二插片726与第二插接孔122的设置位置和设置数量可根据电池模块A沿宽度方向Y的尺寸确定。
其中，该盖板7中，插片72与盖板本体71可一体冲压成型，同时，限位部73与插片72可一体冲压成型。
在另一种具体实施例中，如图13和图14所示，该盖板7的盖板本 体71设置有滑道742，上述线束隔离板组件1的热压边113能够沿该滑道742滑动。
本实施例中，该线束隔离板组件1与滑道742之间的连接也为插接，即线束隔离板组件1的热压边113插接于滑道742，同时，二者能够通过相对滑动的方式实现插接。因此，该实施例中的插接连接方式不仅能够提高线束隔离板组件1与盖板7之间的连接可靠性，还能够简化插接连接的结构以及工艺，同时，通过线束隔离板组件1与盖板7的相对滑动，还能够调整二者的相对位置。
在一种具体实施例中，如图13所示，该盖板7中，沿宽度方向Y，该盖板7的两侧均设置有滑道742，且该滑道742沿长度方向X延伸，相应地，线束隔离板组件1沿宽度方向Y两侧的热压边113能够沿对应的滑道742运动，从而限制线束隔离板组件1与盖板7沿高度方向Z和宽度方向Y相对运动。同时，该盖板7中，沿长度方向X，该盖板7的两端均设置有第二插片726，且该第二插片726可设置限位部73，相应地，线束隔离板组件1沿长度方向X两侧的热压边设置有第二插接孔122，该第二插片726与第二插接孔122插接，从而限制线束隔离板组件1与盖板7沿高度方向Z和长度方向X相对运动。
当然，该盖板7中，滑道742与插片72的设置方式还可为：沿长度方向X的两端设置有滑道742，且该滑道742沿宽度方向Y延伸，沿宽度方向Y的两侧设置有第一插片725，且该第一插片725可设置限位部73。
具体地，如图14所示，该盖板7包括盖板本体71和第二延伸部74，该第二延伸部74沿长度方向X延伸，或者，该第二延伸部74沿宽度方向Y延伸，且该第二延伸部74与盖板本体71连接。其中，该第二延伸部74包括卷边741，该卷边741相对于第二延伸部74弯折，且该卷边741与第 二延伸部74围成滑道742。
本实施例中，该第二延伸部74与盖板本体71一体成型，同时，该卷边741通过在第二延伸部74一体冲压的方式形成，即该滑道742通过盖板7一体冲压成型。当然，上述滑道742的成型方式不仅限于此，还可通过在盖板本体71焊接滑道742等方式成型，本实施例中，滑道742与盖板7一体成型的方式具有简化加工工艺的优点，且使得滑道742的可靠性较高。
其中，如图14所示，该卷边741具有一定的弹性，滑道742与线束隔离板组件1未配合时，该卷边741在弹性作用下与第二延伸部74抵接，且滑道742与线束隔离板组件1配合时，线束隔离板组件1的热压边113能够克服卷边741与第二延伸部74的弹性力，从而伸入卷边741与第二延伸部74之间的滑道742内。
如图7和图13所示，沿长度方向X，该盖板7的两端设置有缺口75，沿宽度方向Y，该盖板7的两侧设置有缺口75，该缺口75的设置能够便于实现插片72与插接孔12之间的插接，同时，该缺口75的设置还能够便于实现滑道742与线束隔离板组件1之间的插接。
综上所述，本申请中，该线束隔离板组件1与盖板7之间插接连接，当二者厚度较小时，该插接连接仍然能够保证二者之间具有较高的连接可靠性。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (12)

  1. 一种电池模块(A)，所述电池模块(A)包括：
    电池单体(2)，多个所述电池单体(2)沿长度方向(X)堆叠；
    盖板(7)，所述盖板(7)位于所述电池单体(2)沿高度方向(Z)的端部；
    线束隔离板组件(1)，沿高度方向(Z)，所述线束隔离板组件(1)位于所述盖板(7)与所述电池单体(2)之间；
    其中，所述盖板(7)与所述线束隔离板组件(1)插接连接。
  2. 根据权利要求1所述的电池模块(A)，其中，所述线束隔离板组件(1)设置有插接孔(12)，所述盖板(7)设置有插片(72)，所述插片(72)与所述插接孔(12)插接连接。
  3. 根据权利要求2所述的电池模块(A)，其中，沿所述插接孔(12)的延伸方向，所述插片(72)的尺寸b大于与其插接的所述插接孔(12)的尺寸a。
  4. 根据权利要求3所述的电池模块(A)，其中，所述插片(72)包括本体部(721)和凸出部(722)；
    沿所述插接孔(12)的延伸方向，所述本体部(721)的两端均连接有所述凸出部(722)。
  5. 根据权利要求4所述的电池模块(A)，其中，所述线束隔离板组件(1)还包括限位部(73)；
    所述本体部(721)具有开口(724)，所述限位部(73)的至少一部分经所述开口(724)伸入所述盖板(7)下方。
  6. 根据权利要求2所述的电池模块(A)，其中，所述盖板(7)还包括盖板本体(71)和第一延伸部(723)，所述第一延伸部(723)沿所 述电池模块(A)的高度方向(Z)延伸；
    沿高度方向(Z)，所述盖板本体(71)与所述插片(72)连接于所述第一延伸部(723)的两端，且所述插片(72)靠近所述电池单体(2)。
  7. 根据权利要求2～6中任一项所述的电池模块(A)，其中，所述盖板(7)设置有滑道(742)，所述线束隔离板组件(1)插接于所述滑道(742)，并沿所述滑道(742)滑动。
  8. 根据权利要求7所述的电池模块(A)，其中，所述盖板(7)包括盖板本体(71)和第二延伸部(74)，所述第二延伸部(74)与所述盖板本体(71)连接；
    所述第二延伸部(74)包括卷边(741)，所述卷边(741)与所述第二延伸部(74)形成所述滑道(742)。
  9. 根据权利要求7所述的电池模块(A)，其中，沿所述电池模块(A)的长度方向(X)的端部，所述线束隔离板组件(1)设置有所述插接孔(12)，所述盖板(7)设置有所述插片(72)；
    沿所述电池模块(A)的宽度方向(Y)的侧部，所述盖板(7)设置有所述滑道(742)，且所述滑道(742)沿长度方向(X)延伸。
  10. 根据权利要求9所述的电池模块(A)，其中，所述盖板(7)设置有缺口(75)，所述缺口(75)位于所述盖板(7)沿长度方向(X)的两端，和/或，所述缺口(75)位于所述盖板(7)沿宽度方向(Y)的两侧。
  11. 一种电池组，其特征在于，所述电池组包括箱体(B)和权利要求1～10中任一项所述的电池模块(A)，所述电池模块(A)固定于所述箱体(B)内。
  12. 一种使用电池单体(2)作为电源的装置，所述装置包括：
    动力源，所述动力源用于为所述装置提供驱动力；和，
    被配置为向所述动力源提供电能的如权利要求1～10中任一项所述的电池模块(A)。
PCT/CN2020/121721 2019-10-21 2020-10-17 电池模块、电池组及使用电池单体作为电源的装置 WO2021078080A1 (zh)

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