Battery cover plate, battery, battery pack and vehicle

Abstract

The utility model provides a battery cover plate, a battery, a battery pack and a vehicle. The battery cover plate includes a base and a pair of conductive members mounted to the base. The base is provided with an auxiliary function part. And the pair of conductive pieces are positioned on the same side of the auxiliary function part. And the conductive piece comprises a power supply assembly piece and a battery cell connecting piece. The two sides of the base abut against the power supply assembly part and the battery cell connecting part in an insulating mode respectively. And the battery cell connecting piece penetrates through the base and is connected with the power supply assembly piece. And the pair of battery cell connecting pieces are respectively connected with battery cell tabs with opposite polarities. The pair of conductive parts are arranged on the same side of the auxiliary function part, so that when the auxiliary function part is damaged and high-temperature conductive substances in the battery overflow, the probability of short circuit caused by the contact of the conductive substances with the conductive parts is reduced, and the safety protection performance of the battery cover plate is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery cover plate, a battery, a battery pack and a vehicle. BACKGROUND

[0002] With the continuous development of battery technology, consumers' requirements for battery performance are gradually increasing. The battery has a battery cover plate arranged at both ends, which includes a pair of conductive pieces for connecting the tab of the battery cell to realize external power supply of the battery cell.

[0003] The battery cover plate is provided with an auxiliary functional part such as a liquid injection hole or an explosion-proof valve to ensure the performance of the battery. At present, the auxiliary functional part is usually arranged in the middle of the pair of conductive pieces. When the battery is out of control, the auxiliary functional part will be damaged, and the high-temperature conductive material inside the battery will easily overflow onto the conductive piece, affecting the electrical connection and increasing the safety risk. UTILITY MODEL CONTENT

[0004] The present application provides a battery cover plate, a battery, a battery pack and a vehicle to solve the related technical problems.

[0005] The first aspect of the present application provides a battery cover plate, comprising a base and a pair of conductive pieces mounted to the base; the base is provided with an auxiliary functional part; the pair of conductive pieces are located on the same side of the auxiliary functional part; the conductive pieces include a power supply assembly and a battery cell connecting piece; the two sides of the base are insulated and abutted with the power supply assembly and the battery cell connecting piece respectively; the battery cell connecting piece is connected with the power supply assembly through the base; the pair of battery cell connecting pieces are used to connect with the tab of the battery cell with opposite polarity respectively.

[0006] By arranging the pair of conductive pieces on the same side of the auxiliary functional part, when the auxiliary functional part is damaged and the high-temperature conductive material overflows, the probability of contacting the conductive piece is reduced, and the safety protection performance of the battery cover plate is improved.

[0007] Further, the base includes a first insulating piece, a second insulating piece and a mounting piece clamped and fixed between the first insulating piece and the second insulating piece; the power supply assembly is mounted to the first insulating piece, and the battery cell connecting piece is mounted to the second insulating piece. By clamping and fixing the mounting piece with the first insulating piece and the second insulating piece, the mounting strength of the mounting piece is improved, thereby improving the structural strength of the battery cover plate.

[0008] Further, the first insulating piece comprises a bottom plate; two sides of the bottom plate abut against the power supply assembly and the mounting piece respectively; a middle part of the bottom plate extends towards one side abutting against the power supply assembly to form an isolation plate, and a pair of the power supply assemblies abut against two side surfaces of the isolation plate respectively. By arranging the isolation plate and mounting a pair of power supply assemblies to the two sides of the isolation plate for insulation, the safety protection performance of the battery cover plate is further improved.

[0009] Further, the isolation plate extends beyond the power supply assembly, so as to improve the isolation effect of the isolation plate on the power supply assembly, reduce the probability of contact conduction of the pair of power supply assemblies, and improve the safety protection performance of the battery cover plate.

[0010] Further, the four sides of the bottom plate extend towards one side abutting against the power supply assembly to form a surrounding plate. By arranging the surrounding plate, the power supply assembly can be wrapped and insulated, the insulation effect between the power supply assembly and the base is improved, and the safety protection performance of the battery cover plate is further improved.

[0011] Further, the mounting piece is provided with a first positioning part, and the first insulating piece and / or the second insulating piece is provided with a second positioning part matched with the first positioning part. By arranging the first positioning part and the second positioning part, the assembly efficiency of the battery cover plate is improved.

[0012] Further, one of the first positioning part and the second positioning part comprises a protruding structure, and the other comprises a groove structure. The protruding structure and the groove structure facilitate production and manufacturing, and improve the production efficiency of the battery cover plate.

[0013] Further, the power supply assembly is provided with a fixing hole, the base is provided with a through hole aligned with the fixing hole; the conductive piece passes through the through hole and is connected to the fixing hole, and the fixing holes of the pair of power supply assemblies are arranged away from each other. By arranging the pair of fixing holes away from each other, interference at the connection between the pair of conductive pieces and the power supply assembly is avoided, and the safety protection performance of the battery cover plate on the battery is improved.

[0014] The second aspect of the present application provides a battery comprising a shell, a cell mounted in the shell, and two above-mentioned battery cover plates, two of the battery cover plates are assembled to two ends of the shell respectively; the cell is provided with a positive electrode lug and a negative electrode lug at both ends, and the positive electrode lug and the negative electrode lug are connected to one of the pair of conductive pieces respectively.

[0015] The battery cover plate can provide higher safety protection, and the safety of the battery is improved. By arranging the positive and negative tabs at both ends of the battery cell, the current path of the battery during charging and discharging is shortened, and part of the current can be transmitted between the tabs at the same end without passing through the battery cell to reach the tab at the other end, thereby improving the charging efficiency of the battery, reducing the temperature rise, and improving the safety of the battery.

[0016] Further, the shell is wrapped with a second insulating film on the side away from the battery cell, and the second insulating film is provided with a cooling member mounting hole. By arranging the cooling member mounting hole, the shell can be combined with the structural adhesive of the cooling member such as a liquid cooling plate, thereby further improving the safety of the battery.

[0017] The third aspect of the present application provides a battery pack comprising a plurality of the above-mentioned batteries, wherein the plurality of batteries are arranged in a horizontal direction and electrically connected by the power supply assembly; and in a vertical direction, the auxiliary function part is located below the conductive member.

[0018] Since the battery has high charging efficiency, the battery pack also has fast charging speed. At the same time, when the high-temperature conductive liquid in the battery overflows, the conductive liquid will flow downward under the action of gravity, reducing the impact on the conductive member and improving the safety performance of the battery pack.

[0019] The fourth aspect of the present application provides a vehicle comprising the above-mentioned battery pack. Since the battery pack has fast charging speed and high safety performance, the vehicle of the present application can provide longer cruising range and better safety guarantee.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and explanatory, and cannot limit the present specification. BRIEF DESCRIPTION OF DRAWINGS

[0021] The accompanying drawings, which are incorporated into the specification and constitute a part of the specification, illustrate embodiments consistent with the present specification and, together with the specification, serve to explain the principles of the present specification.

[0022] Figure 1 is a structural diagram of the battery of the present application;

[0023] Figure 2 is Figure 1 is a structural diagram of the battery from another angle;

[0024] Figure 3 is Figure 1 is an exploded view of the battery;

[0025] Figure 4 is Figure 1 is a structural diagram of the battery cover plate;

[0026] Figure 5 is Figure 4 a perspective exploded view of the battery cover plate in the second embodiment;

[0027] Figure 6 is Figure 1 a partial sectional view of the battery at the battery cover plate in the second embodiment;

[0028] Figure 7 is Figure 2 a structural view of the battery cover plate in the second embodiment;

[0029] Figure 8 is Figure 7 a perspective exploded view of the battery cover plate in the second embodiment;

[0030] Figure 9 is Figure 2 a partial sectional view of the battery at the battery cover plate in the second embodiment;

[0031] Figure 10 is Figure 3 a structural view of the spacer ring in the second embodiment;

[0032] Figure 11 is a structural view of the housing in another embodiment of the present application.

[0033] BRIEF DESCRIPTION OF THE DRAWINGS: battery cover plate - 1; base - 10; auxiliary function part - 100; explosion-proof valve - 101; valve body - 1011; protective sheet - 1012; score - 1013; liquid injection hole - 102; first insulating part - 11; bottom plate - 111; surrounding plate - 112; isolation plate - 113; second insulating part - 12; first vent hole - 121; conductive part partition - 122; contraction part - 123; first leg - 124; second leg - 125; liquid passage space - 126; liquid passage hole - 127; reinforcing plate - 128; mounting part - 13; second vent hole - 131; polarity mark - 132; liquid injection hole - 133; through hole - 14; first through hole - 141; second through hole - 142; third through hole - 143; conductive part - 20; power supply assembly - 21; fixing hole - 211; cell connecting part - 22; pole plate - 221; pole post - 222; sealing part - 223; first positioning part - 30; groove structure - 31; second positioning part - 40; protrusion structure - 41; housing - 50; aluminum shell - 51; first insulating film - 52; spacer ring - 53; support plate - 531; tab partition - 532; gap - 533; third vent hole - 534; cell - 60; positive tab - 61; negative tab - 62; second insulating film - 70; cooling part mounting hole - 71. DETAILED DESCRIPTION

[0034] The technical solutions in the embodiments (or modes of implementation) of the present application will be described clearly and completely in conjunction with the accompanying drawings. When the following description refers to the drawings, the same or similar elements in different drawings are denoted by the same reference numerals unless otherwise indicated.

[0035] If the application embodiments involve terms related to directionality or positional relationship (for example, up, down, left, right, front, back, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, transverse, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.), such terms are only used to explain the relative position relationship, movement, etc. between components in a certain posture (as shown in the drawings); if the specific posture changes, the directionality or positional relationship will also change accordingly. In addition, the terms "first", "second", etc. in the application embodiments are only used for convenience of description, and cannot be understood as indicating or implying relative importance.

[0036] The battery cover plate is provided with an auxiliary functional part such as a liquid injection hole or an explosion-proof valve to ensure the performance of the battery. At present, the auxiliary functional part is usually arranged in the middle of a pair of conductive parts. When the battery is out of control, the auxiliary functional part will be damaged, and the high-temperature conductive material inside the battery is easy to overflow onto the conductive part, affecting the electrical connection and increasing the safety risk.

[0037] As shown in Figures 1 to 5 The first aspect of the present application provides a battery cover plate 1, comprising a base 10 and a pair of conductive parts 20 mounted to the base 10. The base 10 is provided with an auxiliary functional part 100. The pair of conductive parts 20 is located on the same side of the auxiliary functional part 100. The conductive part 20 comprises a power assembly 21 and a cell connecting part 22. The two sides of the base 10 are respectively insulated and abutted with the power assembly 21 and the cell connecting part 22. The cell connecting part 22 is connected with the power assembly 21 through the base 10. The pair of cell connecting parts 22 are used to connect with the polar opposite cell tabs respectively.

[0038] By arranging the pair of conductive parts 20 on the same side of the auxiliary functional part 100, when the auxiliary functional part 100 is damaged and the high-temperature conductive material inside the battery overflows, the probability of contacting the conductive part 20 is reduced, improving the safety protection performance of the battery cover plate 1. The number of conductive parts 20 can also be two pairs or more, and the specific number is not limited, as long as the plurality of conductive parts 20 are located on the same side of the auxiliary functional part 100.

[0039] A second aspect of this application also provides a battery 2. The battery includes a housing 50, a battery cell 60 installed within the housing 50, and two battery cover plates 1 as described above. The two battery cover plates 1 are respectively assembled to both ends of the housing 50. The battery cell 60 is provided with a positive tab 61 and a negative tab 62 at both ends, and the positive tab 61 and the negative tab 62 are respectively connected to one of a pair of conductive elements 20. Specifically, the positive tab 61 and the negative tab 62 can be laser welded to the conductive element 20 respectively, and the specific connection method is not limited.

[0040] Because the battery cover 1 provides high safety protection, the safety of the battery 2 is improved. Furthermore, by providing positive tabs 61 and negative tabs 62 at both ends of the cell 60, the current path of the battery 2 during charging and discharging is shortened. Part of the current can be transmitted between the tabs at the same end without having to cross the cell 60 to reach the tab at the other end, thus improving the battery's charging efficiency, reducing temperature rise, and further enhancing battery safety.

[0041] The types of auxiliary functional parts 100 are not limited. Figures 4 to 6 In the illustrated embodiment, the auxiliary functional unit 100 is an explosion-proof valve 101. For example... Figure 4 and Figure 5 As shown, the explosion-proof valve 101 includes a valve body 1011 and a protective plate 1012. The valve body 1011 has grooves 1013. The protective plate 1012 is attached to the surface of the valve body 1011 with acrylic adhesive to prevent debris from scratching the valve body 1011. The explosion-proof valve 101 can be made of aluminum, specifically MFX-2. The protective plate 1012 can be made of PET (Polyethylene Terephthalate).

[0042] The notch 1013 is a thinner area within the valve body 1011. When the internal thermal pressure of the battery becomes excessive, the notch 1013 is broken to release the pressure. The notch 1013 can be C-shaped, circular, or double crescent-shaped; the specific type is not limited. The thickness of the notch 1013 can be 40μm to 100μm to ensure the valve opening pressure.

[0043] like Figure 4 and Figure 5 As shown, the base 10 includes a first insulating member 11, a second insulating member 12, and a mounting member 13 that clamps and fixes between the first insulating member 11 and the second insulating member 12. The power supply assembly 21 is mounted to the first insulating member 11, and the cell connector 22 is mounted to the second insulating member 12. By clamping and fixing the mounting member 13 with the first insulating member 11 and the second insulating member 12, the installation strength of the mounting member 13 is improved, thereby improving the structural strength of the battery cover 1.

[0044] The power supply assembly 21 is abutted to the side of the first insulating piece 11 away from the mounting piece 13, and the battery cell connecting piece 22 is abutted to the side of the second insulating piece 12 away from the mounting piece 13, so that the power supply assembly 21 and the battery cell connecting piece 22 are insulated and abutted to the base 10. The base 10 is provided with a through hole 14, and the battery cell connecting piece 22 passes through the through hole 14 and is connected with the power supply assembly 21.

[0045] The length of the first insulating piece 11 can account for 50% of the overall length of the battery cover plate 1, which can increase the volume of the power supply assembly 21 and meet the overcurrent requirement of high-power charging and discharging. The first insulating piece 11 can be made of PPS (Polyphenylene Sulfide) material added with 30%-50% glass fiber, which can provide certain strength while ensuring insulation. The second insulating piece 12 can be made of PP (Polypropylene) material.

[0046] The first insulating piece 11 includes a bottom plate 111, a surrounding plate 112, and an isolation plate 113. The two sides of the bottom plate 111 are respectively abutted to the power supply assembly 21 and the mounting piece 13. The surrounding plate 112 extends from the four sides of the bottom plate 111 towards the side abutting the power supply assembly 21. By arranging the surrounding plate 112, the power supply assembly 21 is wrapped and insulated, which improves the insulation effect between the power supply assembly 21 and the base 10 and further improves the safety protection performance of the battery cover plate 1.

[0047] The isolation plate 113 extends from the middle of the bottom plate 111 towards the side abutting the power supply assembly 21. A pair of power supply assemblies 21 are respectively abutted to the two side surfaces of the isolation plate 113. By arranging the isolation plate 113 and installing a pair of power supply assemblies 21 on the two sides of the isolation plate 113 for insulation, the safety protection performance of the battery cover plate 1 is further improved.

[0048] At the same time, by arranging the isolation plate 113, physical insulation is provided for a pair of power supply assemblies 21, and compared with air insulation, a pair of power supply assemblies 21 can be closer. On this basis, the tab of the battery cell can be widened, which improves the overcurrent capacity of the tab, reduces the temperature rise of the tab during fast charging, strengthens the uniformity of temperature, and improves the service life of the battery cell. At the same time, the volume of the power supply assembly 21 can also be increased, and when the batteries 2 are connected through the power supply assembly 21, the space for electrical connection is also increased, which further improves the overcurrent capacity and reduces the temperature rise of the battery.

[0049] The isolation plate 113 extends beyond the power supply assembly 21. This arrangement improves the isolation effect of the isolation plate 113 on the power supply assembly 21, reduces the probability of a short circuit between a pair of power supply assemblies 21, and improves the safety protection performance of the battery cover plate 1. The distance by which the isolation plate 113 extends beyond the power supply assembly 21 can be 2 mm to 5 mm. The thickness of the isolation plate 113 can be 1.5 mm to 3 mm.

[0050] As shown in Figure 5 , the second insulating member 12 is provided with a plurality of first air holes 121, and the plurality of air holes 121 are located below the explosion-proof valve 101 to release gas. Please refer to Figure 6 , the second insulating member 12 is provided with a conductive member partition 122 on the side abutting the cell connecting member 22 to separate a pair of cell connecting members 22 and avoid contact with the conductive member.

[0051] The second insulating member 12 is provided with a shrinkage portion 123. The shrinkage portion 123 can be a hole or a groove. Since the volume of the second insulating member 12 will shrink during the thermoplastic process, a hole or groove is provided to reduce the solid portion, thereby reducing the shrinkage of the second insulating member 12 during the thermoplastic process. As shown in Figure 4 and Figure 5 , the mounting member 13 is provided with a polarity mark 132 to show the polarity of the adjacent conductive member 20 connected to the tab. The material of the mounting member 13 can be aluminum-manganese alloy, which has certain strength and corrosion resistance.

[0052] As shown in Figure 4 and Figure 5 , the base 10 is provided with a through hole 14. The through hole 14 is used to pass through the cell connecting member 22, so that the cell connecting member 22 can be connected to the power supply assembly 21. The through hole 14 includes a first through hole 141, a second through hole 142, and a third through hole 143. The first through hole 141 is provided on the first insulating member 11.

[0053] The second through hole 142 is provided on the mounting member 13. The third through hole 143 is provided on the second insulating member 12. The first through hole 141, the second through hole 142, and the third through hole 143 are arranged in alignment to form the whole through hole 14.

[0054] The power supply assembly 21 is provided with a fixing hole 211. The fixing hole 211 is arranged in alignment with the through hole 14. The cell connecting member 22 passes through the through hole 14 and is connected to the fixing hole 211. A pair of fixing holes 211 of the power supply assembly 21 are arranged away from each other. By arranging a pair of fixing holes 211 away from each other, interference at the connection between the cell connecting member 22 and the power supply assembly 21 is avoided, and the safety protection performance of the battery cover plate 1 is improved.

[0055] Specifically, the cell connecting piece 22 comprises a polar plate 221 and a polar post 222. The polar post 222 is connected with the fixing hole 211 through the through hole 14 from the polar plate 221. The polar post 222 and the power supply assembly 21 can be riveted, having high connection strength. A sealing piece 223 is sleeved on the polar post 222, ensuring the air tightness of the battery cover plate 1.

[0056] The material of the power supply assembly 21 can be aluminum. The material of the cell connecting piece 22 connected with the positive electrode lug 61 can be aluminum. The material of the cell connecting piece 22 connected with the negative electrode lug 62 can be copper. The material of the sealing piece 223 can be fluororubber.

[0057] In Figures 7 to 9 In the embodiment shown, the auxiliary functional part 100 is a liquid injection hole 102. The liquid injection hole 102 is arranged on the mounting piece 13. In this embodiment, the second insulating piece 12 is provided with a first leg 124 and a second leg 125. The second insulating piece 12 is internally provided with a liquid passing space 126. The liquid passing space 126 is in communication with the liquid injection hole 102. The inside of the liquid passing space 126 is provided with a reinforcing plate 128, connecting the inner walls of the liquid passing space 126 and improving the strength of the second insulating piece 12.

[0058] As Figure 5 shown, the mounting piece 13 is provided with a first positioning part 30, and at least one of the first insulating piece 11 and the second insulating piece 12 is provided with a second positioning part 40. The first positioning part 30 and the second positioning part 40 are cooperatively mounted. By arranging the first positioning part 30 and the second positioning part 40, the assembly efficiency of the battery cover plate 1 is improved.

[0059] One of the first positioning part 30 and the second positioning part 40 is a protruding structure 41, and the other is a groove structure 31. The protruding structure 41 and the groove structure 31 facilitate production and manufacturing, improving the production efficiency of the battery cover plate 1.

[0060] As Figure 3 shown, the shell 50 comprises an aluminum shell 51 and a first insulating film 52 arranged on the inner side of the aluminum shell 51. The first insulating film 52 wraps the cell 60 to play an insulating role. Please refer to Figure 5 shown, the first leg 124 and the second leg 125 are fixed by heat melting with the first insulating film 52. The material of the first insulating film 52 can also be PP material, which has good heat melting fixing effect with the second insulating piece 12 of PP material. The first insulating film 52 can also be a sandwich structure formed by sandwiching a layer of PET material between two layers of PP material, improving the puncture resistance.

[0061] The lug can be S-shaped or C-shaped. When the lug is S-shaped, a spacer 53 is arranged between the battery cover plate 1 and the shell 50 to improve the fixing strength of the lug. As Figure 10As shown, the spacer ring 53 is provided with a support plate 531 and a tab spacer plate 532. The spacer ring 53 is provided with a gap 533 on one side of the support plate 531. The tab is bent after passing through the gap 533 and abuts against the support plate 531, ensuring the fixing strength of the tab. The material of the spacer ring 53 can be PP material, improving the hot melt fixing effect with the first insulating film 52.

[0062] The tab spacer plate 532 separates the positive and negative tabs, avoiding short circuit. The length and width of the spacer ring 53 can be 0.5mm-1mm larger than the second insulating member 12. The spacer ring 53 can wrap the second insulating member 12, reducing the overall volume, so that the volume of the battery cell 60 or the electrolyte injection amount can be increased, improving the energy density of the battery 2 and prolonging the service life of the battery 2.

[0063] In this embodiment, the spacer ring 53 is applied to the fixing of the battery cover plate 1 provided with the explosion-proof valve 101, and therefore the spacer ring 53 is provided with a plurality of air vents 534 located below the explosion-proof valve 101 for pressure release.

[0064] As shown, Figure 3 The shell 50 is wrapped with a second insulating film 70 on the side away from the battery cell 60. The second insulating film 70 is provided with a cooling member mounting hole 71. By providing the cooling member mounting hole 71, the shell 50 can be combined with the structural adhesive of the cooling member such as a liquid cooling plate, improving the heat dissipation effect and further improving the safety of the battery 2.

[0065] The shape of the cooling member mounting hole 71 can be circular, rectangular, trapezoidal or rhombic, etc., and the specific number is not limited. The number of cooling member mounting holes 71 can be 8-20, and the specific number is not limited. The second insulating film 70 can be PET material, which is adhered to the shell 50 by acrylic back adhesive. The thickness of the second insulating film 70 can be 110μm. The second insulating film 70 can be a double-layer PET structure, two layers of 25μm PET are adhered by 30μm acrylic back adhesive, and then the double-layer structure is adhered to the shell 50 by 30μm glue.

[0066] As shown, Figure 11 In some embodiments, the explosion-proof valve 101 and the liquid injection hole 102 are arranged on the side of the aluminum shell 51 to avoid the tabs of the battery, which also plays a role in protecting the tabs. In this embodiment, the explosion-proof valve 101 can be a separate component, or it can be formed on the aluminum shell 51 by stamping, machining or laser etching of the aluminum shell 51.

[0067] The material of the aluminum shell 51 can be aluminum-manganese alloy. The aluminum shell 51 can be formed by stretch forming, hot extrusion forming, or aluminum plate bending high-frequency welding forming, etc. The aluminum shell 51 can be of equal wall thickness, with a thickness of 0.3mm-1.2mm. The aluminum shell 51 can also be of unequal wall thickness. In the embodiment in which the explosion-proof valve 101 and the liquid injection hole 102 are arranged on the side of the aluminum shell 51, in order to ensure the structural strength and the accommodation space of the explosion-proof valve 101, the wall thickness of the aluminum shell 51 at this part can be 1.2mm-2mm.

[0068] The third aspect of the present application provides a battery pack, comprising a plurality of the above-mentioned batteries 2, the plurality of batteries 2 being arranged in a horizontal direction and being electrically connected to each other by the power supply assembly 21. In the height direction, the auxiliary function part 100 is located below the conductive member 20.

[0069] Since the battery 2 has high charging efficiency, the battery pack also has fast charging speed. At the same time, when the high-temperature conductive liquid inside the battery 2 overflows, the conductive liquid will flow downward under the action of gravity, reducing the impact on the conductive member 20 and improving the safety performance of the battery pack.

[0070] The fourth aspect of the present application provides a vehicle comprising the above-mentioned battery pack. Since the battery pack has fast charging speed and high safety performance, the vehicle of the present application can provide longer cruising range and better safety guarantee.

[0071] It should be noted that the technical solutions or technical features described in the above embodiments can be combined or supplemented with each other without conflict. The scope of protection of the present application is not limited to the precise structures described in the above embodiments and shown in the accompanying drawings; any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present application shall be included in the scope of protection of the present application.

Claims

1. A battery cover, characterized in that, include: A base and a pair of conductive elements mounted to the base; the base is provided with an auxiliary functional part; the pair of conductive elements are located on the same side of the auxiliary functional part; The conductive component includes a power supply assembly and a battery cell connector; the two sides of the base are respectively insulated from and abut against the power supply assembly and the battery cell connector; The cell connector passes through the base and is connected to the power supply assembly; a pair of cell connectors are used to connect to cell tabs of opposite polarity respectively.

2. The battery cover according to claim 1, characterized in that, The base includes a first insulating element, a second insulating element, and a mounting element that clamps and fixes between the first insulating element and the second insulating element; the power supply assembly is mounted to the first insulating element, and the battery cell connector is mounted to the second insulating element.

3. The battery cover according to claim 2, characterized in that, The first insulating component includes a base plate; the two sides of the base plate abut against the power supply assembly and the mounting component respectively; the middle part of the base plate extends toward the side abutting the power supply assembly to form an isolation plate, and a pair of power supply assemblies abut against the two sides of the isolation plate respectively.

4. The battery cover according to claim 3, characterized in that, The isolation plate extends beyond the power supply assembly.

5. The battery cover according to claim 3, characterized in that, The base plate extends around the side that abuts the power supply assembly to form a surrounding plate.

6. The battery cover according to claim 2, characterized in that, The mounting component is provided with a first positioning part, and the first insulating component and / or the second insulating component is provided with a second positioning part that cooperates with the first positioning part for installation.

7. The battery cover according to claim 6, characterized in that, One of the first positioning part and the second positioning part includes a protrusion structure and the other includes a groove structure.

8. The battery cover according to claim 1, characterized in that, The power supply assembly is provided with a fixing hole, and the base is provided with a through hole that aligns with the fixing hole; the battery cell connector passes through the through hole and connects to the fixing hole, and the fixing holes of a pair of power supply assemblies are arranged far apart from each other.

9. A battery, characterized in that, include: The battery includes a housing, a battery cell installed inside the housing, and two battery covers as described in any one of claims 1-8, wherein the two battery covers are respectively assembled to both ends of the housing; each battery cell has a positive tab and a negative tab at both ends, and the positive tab and the negative tab are respectively connected to one of the pair of conductive elements.

10. The battery according to claim 9, characterized in that, The housing is wrapped with a second insulating film on the side opposite to the battery cell, and the second insulating film is provided with cooling component mounting holes.

11. A battery pack, characterized in that, include: A plurality of batteries as described in claim 9 or 10, wherein the plurality of batteries are spaced apart in a horizontal direction and electrically connected through the power supply assembly; In the vertical direction, the auxiliary functional part is located below the conductive element.

12. A vehicle, characterized in that, include: The battery pack as claimed in claim 11.

Images