CN219892351U

CN219892351U - Battery module and battery

Info

Publication number: CN219892351U
Application number: CN202320319660.0U
Authority: CN
Inventors: 曲凡多; 张放南; 林志宏; 赵亮; 蔡云雯
Original assignee: Svolt Energy Technology Co Ltd
Current assignee: Svolt Energy Technology Co Ltd
Priority date: 2023-02-24
Filing date: 2023-02-24
Publication date: 2023-10-24
Anticipated expiration: 2033-02-24

Abstract

The utility model discloses a battery module and a battery, wherein the battery module comprises: the battery cell is provided with end faces at two ends in the extending direction, at least one of the two end faces is provided with a tab, and the battery cell is provided with a top face, a bottom face and a side face which are connected with the two end faces; and at least one part of the adapter is connected with the lug of the end face, and at least one other part of the adapter extends to the top face. According to the battery module, the battery core and the adapter are arranged, the lug is formed on the end face of the battery core, at least part of the adapter is connected with the lug on the end face, and at least the other part of the adapter extends to the top face of the battery core, so that the adapter can guide current in the lug on the end face to the top face of the battery core, the convenience in assembling and disassembling the battery core is further improved, the production efficiency, the production yield and the maintenance convenience of the battery core are improved, and the economic cost is saved.

Description

Battery module and battery

Technical Field

The utility model relates to the technical field of batteries, in particular to a battery module and a battery.

Background

The lithium ion battery is a secondary battery, and is widely applied to the fields of electric automobiles, electric tricycles, electric tools, digital products and the like due to the advantages of high energy, long service life, no memory effect and the like. The lithium ion battery is mainly square batteries, cylindrical batteries and soft package batteries. The square battery core has the advantages of high packaging reliability, high system energy efficiency, simpler structure, relatively convenient capacity expansion and the like, and therefore, the square battery core is widely applied. The lug of traditional square electric core is located the electric core top generally, but this kind of lug overall arrangement can lead to electric core cost to be higher, to some electric cores that width size is great, still can lead to the production degree of difficulty big, the big scheduling problem of top cap welding length, in order to solve the problem, the mode of general adoption at present is with the lug overall arrangement at the both sides face of electric core.

In the related art, in a power battery system with square battery cell lugs arranged at side positions, busbar connection and sampling connection are correspondingly arranged at two sides of the battery cell arrangement direction, so that operations such as welding, wiring and the like are required to be performed on the side surfaces of the battery cells, and the battery cells are difficult to assemble and high in production reject ratio. And once the sampling unit damages the power battery system, the maintenance part is positioned at two sides of the battery core, so that the maintenance is difficult, and the problems of high manufacturing cost, high reject ratio and the like are further caused.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to provide a battery module. According to the battery module, the battery core and the adapter are arranged, the lug is formed on the end face of the battery core, at least part of the adapter is connected with the lug on the end face, and at least the other part of the adapter extends to the top face of the battery core, so that the adapter can guide current in the lug on the end face to the top face of the battery core, the convenience in assembling and disassembling the battery core is further improved, the production efficiency, the production yield and the maintenance convenience of the battery core are improved, and the economic cost is saved.

The utility model also provides a battery comprising the shell and the battery module.

The battery module according to the present utility model includes: the battery cell is provided with end faces at two ends in the extending direction, at least one of the two end faces is provided with a tab, and the battery cell is provided with a top face, a bottom face and a side face which are connected with the two end faces; and at least one part of the adapter is connected with the lug of the end face, and at least one other part of the adapter extends to the top face.

According to the utility model, the electrode lugs are formed on at least one of the two end faces of the battery core, at least part of the electrode lugs are connected with the electrode lugs of the end face, and at least the other part of the electrode lugs on the end face extend to the top face of the battery core, so that the current in the electrode lugs on the end face can be led to the top face through the electrode lugs, and the connection between the electrode lugs on the end face and part of other parts of the battery module can be converted into the connection between at least the other part of the electrode lugs on the top face and part of other parts of the battery module.

According to one embodiment of the utility model, the battery cells are configured as a plurality of battery cells stacked in sequence in the thickness direction, and the adapter is configured as a plurality of battery cells and connects two adjacent battery cells with the lugs on the end face on the same side.

According to an embodiment of the present utility model, the battery module further includes: and the sampling plate is respectively connected with a plurality of the switching pieces positioned at one end of the same side of the battery cell.

According to one embodiment of the utility model, each of said adapters comprises: the converging part is arranged on the top surface of the battery cell and is suitable for being connected with the sampling plate; and the connecting section is connected with the converging part, extends to the end face of the battery cell and is connected with the electrode lug.

According to one embodiment of the utility model, the connecting sections are configured into a plurality of tabs and are respectively connected with one ends of the same sides of the plurality of battery cells.

According to one embodiment of the present utility model, the sampling plate is disposed on the top surface and is connected to the plurality of the confluence parts, respectively.

According to an embodiment of the present utility model, the battery module further includes: sampling connecting piece, sampling connecting piece structure is a plurality of and every sampling connecting piece's one end with sampling board is connected, sampling connecting piece's the other end with corresponding converging portion is connected.

According to an embodiment of the present utility model, the battery module further includes: the first insulating pieces and the second insulating pieces are respectively arranged on the top surfaces of the plurality of electric cores at intervals in the extending direction of the electric cores, and the first insulating pieces and the second insulating pieces are respectively covered on the converging parts at two ends of the top surface of each electric core; and the pressing plate is covered on the top surface of the battery cell and is positioned between the first insulating piece and the second insulating piece.

The battery according to the present utility model includes: a housing in which a receiving chamber is formed; the battery module is disposed in the accommodating cavity and is configured as the battery module according to any one of the above embodiments.

The battery according to the utility model comprises the shell and the battery module according to any one of the embodiments, and the battery according to the utility model comprises the shell and the battery module according to any one of the embodiments, so that the battery module of the battery is provided with the adapter, the adapter can guide the current of the tab on the end face to the top face, and the sampling plate can be connected with the tab on the top face, thereby being more convenient for assembling and disassembling the battery core, being more beneficial to the production yield of the battery core and being more beneficial to saving the manufacturing cost.

According to one embodiment of the present utility model, the battery modules are configured in plurality, and module connection members are provided between adjacent two of the battery modules, the module connection members connecting the adapter members of the adjacent two of the battery modules.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic view of a part of a battery structure according to an embodiment of the present utility model;

FIG. 2 is a schematic view of a first insulator, a second insulator, and a pressure plate in a battery according to an embodiment of the present utility model;

fig. 3 is a schematic view illustrating the arrangement of tabs in a single battery module according to an embodiment of the present utility model;

fig. 4 is a schematic view illustrating the arrangement of the adapter in the single battery module according to the embodiment of the present utility model.

Reference numerals:

a battery 1;

the battery module comprises a shell 11, a battery module 12, a battery cell 121, an end surface 1211, a lug 1212, a top surface 1213, an adapter 122, a converging portion 1221, a connecting section 1222, a sampling plate 124, a sampling connecting piece 1241, a first insulating piece 125, a second insulating piece 126, a pressing plate 127 and a module connecting piece 13.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

The battery module 12 according to the embodiment of the present utility model is described below with reference to fig. 1 to 4.

The battery module 12 according to the present utility model includes the battery cells 121 and the adapter 122. The battery cell 121 is suitable for storing electric energy and providing power, and end faces 1211 are arranged at two ends of the battery cell 121 in the extending direction, and the layout mode of the electrode lug 1212 in the present utility model may be that any one of the two end faces 1211 is formed with a positive electrode lug 1212 and a negative electrode lug 1212, and the layout mode of the electrode lug 1212 in the present utility model may also be that the two end faces 1211 are respectively formed with a positive electrode lug 1212 and a negative electrode lug 1212. The cell 121 is formed with a top surface 1213, a bottom surface, and side surfaces connecting the two end surfaces 1211; at least a portion of the adapter 122 is connected to the tab 1212 on the end face 1211, at least another portion of the adapter 122 extends to the top face 1213, and the adapter 122 is adapted to direct current in the tab 1212 on the end face 1211 to the top face 1213 of the cell 121.

According to the utility model, through arranging the battery cell 121 and the adapter 122, the tab 1212 is formed on at least one of the two end surfaces 1211 of the battery cell 121, at least part of the adapter 122 is connected with the tab 1212 of the end surface 1211, and at least the other part of the adapter 122 extends to the top surface 1213 of the battery cell 121, so that the current in the tab 1212 on the end surface 1211 can be led to the top surface 1213 through the adapter 122, and thus the connection between the tab 1212 on the end surface 1211 and part of other components of the battery module 12 can be converted into the connection between at least the other part of the adapter 122 on the top surface 1213 and part of other components of the battery module 12, and therefore, the operations of welding, wiring and the like of the battery cell 121 are performed on the top surface 1213 of the battery cell 121, so that the assembly and replacement of the battery cell 121 are easier, the maintenance convenience of the part of other components of the battery module 12 connected with the adapter 122 is higher, and the production yield of the battery cell 121 is higher, and the economic cost is saved.

Furthermore, in some embodiments of the present utility model, the cells 121 are configured as square cells 121; the adaptor 122 may be soldered or otherwise electrically connected to the tab 1212; an insulating layer is formed on the surface of the adaptor 122 to improve the working safety and reliability of the adaptor 122.

According to one embodiment of the present utility model, the plurality of the battery cells 121 are configured, and the plurality of battery cells 121 are stacked in sequence in the thickness direction, the plurality of the adaptor 122 is configured, and each adaptor 122 can connect the tabs 1212 on the same side end surface 1211 of two adjacent battery cells 121. Specifically, the plurality of electric cores 121 are stacked in sequence in the thickness direction, and the plurality of adapters 122 are disposed adjacent to each other in sequence along the stacking direction of the electric cores 121, wherein at least part of each adapter 122 is connected to the tab 1212 on the same-side end surface 1211 of two adjacent electric cores 121. By arranging the plurality of battery cells 121 and the plurality of switching pieces 122, at least part of each switching piece 122 is connected with the lugs 1212 on the end faces 1211 on the same side of two adjacent battery cells 121, and at least another part of each switching piece 122 extends to the top faces 1213 of the corresponding two battery cells 121, so that the switching pieces 122 realize the effect of converting the current of the lugs 1212 of the battery cells 121 from the output of the end faces 1211 to the output of the top faces 1213, and meanwhile, the switching pieces 122 have the function of restraining positions on the battery cells 121 which are stacked, so that the battery cells 121 can be more stable and reliable in the battery module 12.

According to one embodiment of the present utility model, the battery module 12 further includes sampling plates 124, and the sampling plates 124 are respectively connected to a plurality of adapters 122 located at the same side end of the battery cells 121. Specifically, since the adaptor 122 is connected to the tab 1212, the sampling plate 124 is respectively connected to the plurality of adaptors 122 at the same end of the battery cell 121, so that the current of the tab 1212 on the end surface 1211 can be led to the sampling plate 124 through the adaptor 122, so that the sampling plate 124 can be conducted with the tab 1212, and the sampling plate 124 can collect and transmit the data of the battery module, so as to monitor the working state and performance of the battery module, and provide the battery module to the relevant battery 1 system for decision and regulation, so that the battery module can work better.

Battery module according to one embodiment of the present utility model, each adapter 122 includes a bus bar 1221 and a connection segment 1222. In this embodiment, the converging portion 1221 is disposed on the top surface 1213 of the battery cell 121, and the converging portion 1221 is adapted to be connected to the sampling plate 124; the connection section 1222 in this embodiment is connected to the bus section 1221, extends to the end surface 1211 of the cell 121, and is connected to the tab 1212. That is, after current flows out from the tab 1212, the current flows into the sampling plate 124 through the connection section 1222 and the bus portion 1221 in order to conduct the current between the sampling plate 124 and the battery module. By arranging the converging portion 1221 and the connecting section 1222, the converging portion 1221 and the connecting section 1222 are respectively located on the top surface 1213 and the end surface 1211 of the electric core 121, so that when the tab 1212 of the electric core 121 is arranged as the end surface 1211, the converging portion 1221 of the electric core 121 is located on the top surface 1213 of the electric core 121, and welding, wiring and other operations on the top surface 1213 of the electric core 121 are facilitated. In addition, the connection and conduction between the electrode lug 1212 and the sampling plate 124 are more convenient, the installation and the disassembly of the sampling plate 124 are more convenient, and the assembly efficiency and the maintenance convenience of the battery cell 121 are more convenient to improve.

According to one embodiment of the present utility model, the connection segments 1222 are configured in a plurality and are connected to the tabs 1212 on the same side of the plurality of the cells 121, respectively, i.e., the plurality of connection segments 1222 are connected to the plurality of the tabs 1212 on the same side of the cells 121 in a one-to-one correspondence. Through constructing the connection section 1222 into a plurality of and be connected with the utmost point ear 1212 on the homonymy one end of a plurality of electric core 121 respectively for every utmost point ear 1212 that is located on the homonymy one end of electric core 121 can be connected with corresponding connection section 1222, thereby when the needs detect or the maintenance to certain electric core 121 in the battery module, single electric core 121 is more easily taken out by dismantling from the battery module, is more convenient for promote maintenance efficiency, and has reduced the risk that the whole battery module needs to be dismantled because of single electric core 121 and causes the battery module to damage, and then has saved the maintenance cost.

According to an embodiment of the present utility model, the battery module sampling plate 124 is disposed on the top surface 1213, and the sampling plate 124 is respectively connected to the plurality of converging portions 1221, so as to implement sampling and collecting of data of the battery cells 121. Battery module the battery module is through setting up sampling board 124 in the top surface 1213 of electric core 121 for the connection arrangement of sampling board 124 and converging portion 1221 can be operated on electric core 121 top surface 1213, has both helped the visual operation of staff, has reduced the influence to electric core 121 again, and the equipment between sampling board 124 and electric core 121 is more convenient, and more does benefit to the maintenance detection and the change of sampling board 124, thereby has reduced the risk that is difficult to maintain and leads to whole battery module to be unable to use because of the sampling board 124 damages, has improved battery module's production yield, has saved manufacturing cost.

In addition, through setting up sampling plate 124 in top surface 1213 and be connected with a plurality of converging portion 1221 respectively, can also make sampling plate 124 directly stride across some crossbeams that set up between battery module 12, and need not to reserve the incision with the crossbeam in order to satisfy the arrangement of sampling plate 124 to help promoting the structural integrity of crossbeam, reinforcing is to the guard action of battery module.

According to one embodiment of the present utility model, the battery module 12 further includes a sampling connection 1241. Sampling connection members 1241 are configured in plurality, and one end of each sampling connection member 1241 is connected to the sampling plate 124, and the other end of the sampling connection member 1241 is connected to the corresponding confluence part 1221. Specifically, the converging portion 1221 is conducted with the tab 1212 through the connection segment 1222, one end of the sampling connecting piece 1241 is connected with the sampling plate 124, the other end of the sampling connecting piece 1241 is connected with the corresponding converging portion 1221, that is, after current flows out of the tab 1212, the current can flow into the sampling plate 124 through the connection segment 1222, the converging portion 1221 and the sampling connecting piece 1241 in sequence, so that connection between the sampling plate 124 and the tab 1212 is achieved, and further the sampling plate 124 can normally monitor the working state and performance of the battery module.

According to one embodiment of the present utility model, the battery module 12 further includes a first insulating member 125, a second insulating member 126, and a pressing plate 127. The first insulating member 125 and the second insulating member 126 of the present embodiment are respectively disposed on the top surfaces 1213 of the plurality of battery cells 121, and the first insulating member 125 and the second insulating member 126 are disposed at intervals in the extending direction of the battery cells 121, and the first insulating member 125 and the second insulating member 126 respectively cover the converging portions 1221 at two ends of the top surface 1213 of each battery cell 121, which can be understood that the first insulating member 125 and the second insulating member 126 respectively extend along the stacking direction of the battery cells 121 on the top surface 1213 of the battery cell 121, so as to realize that the first insulating member 125 and the second insulating member 126 can cover the plurality of battery modules 12. By providing the first and second insulating members 125 and 126, the first and second insulating members 125 and 126 can insulate the top surface 1213 of the battery cell 121, thereby improving the operational safety and reliability of the battery module 12.

Furthermore, in one embodiment of the present utility model, the first insulating member 125 and the second insulating member 126 are each configured as a plastic member or an epoxy resin member to achieve good insulation; in another embodiment of the present utility model, the first insulating member 125 and the second insulating member 126 are both configured as insulating heat-conducting plates, so that the first insulating member 125 and the second insulating member 126 can also perform the functions of heating, heat dissipation or soaking on the battery cells 121 while enhancing the position constraint strength of the battery cells 121 and the battery modules 12, thereby improving the working performance of the battery cells 121.

The pressing plate 127 of the present embodiment covers the top surface 1213 of the battery cell 121, and the pressing plate 127 is located between the first insulating member 125 and the second insulating member 126. It is understood that the pressing plate 127 extends on the top surface 1213 of the cell 121 in the stacking direction of the cell 121. Through setting up clamp plate 127 for clamp plate 127 can be connected with the top surface 1213 of a plurality of electric core 121, thereby clamp plate 127 can carry out the position constraint to electric core 121 and the battery module 12 of piling up the setting and fix, and then the arrangement and the installation between electric core 121 and battery module 12 can be more firm, and the operational reliability of battery module 12 is higher, and the working property is better.

In addition, in one embodiment of the present utility model, the pressing plate 127 and the top surface 1213 of the cell 121 are fixed by adhesion, so as to improve the convenience of installation and disassembly of the pressing plate 127 and save economic cost.

The battery 1 according to the present utility model includes a case 11 and a battery module 12. Wherein, the shell 11 has the functions of installation, fixation and protection for part of other components in the battery 1, and a containing cavity is formed in the shell 11; the battery module 12 is disposed in the accommodating chamber, and the battery module 12 is configured as the battery module 12 according to any one of the above embodiments.

The battery 1 according to the present utility model includes the housing 11 and the battery module 12 according to any one of the above embodiments, and since the battery 1 according to the present utility model includes the housing 11 and the battery module 12 according to any one of the above embodiments, the adapter 122 is disposed in the battery module 12 of the battery 1, so that the adapter 122 can guide the current of the tab 1212 on the end surface 1211 to the top surface 1213, and the sampling plate 124 can also be connected to the tab 1212 on the top surface 1213, thereby facilitating the assembly and disassembly of the battery 121, facilitating the production yield of the battery 121, and saving the manufacturing cost.

In addition, in one embodiment of the present utility model, the pressure plate 127 is connected to the housing 11 and the beam structure in the battery 1 by welding or bolts. Because the welding and bolting stability is good and the cost is low, the working reliability of the battery 1 can be improved and the economic cost can be saved by providing the pressing plate 127 to be welded or bolted with the housing 11 and the beam structure in the battery 1.

According to one embodiment of the present utility model, the battery modules 12 are constructed in a plurality, and the module connection members 13 are disposed between the adjacent two battery modules 12, and the module connection members 13 connect the adapter members 122 of the adjacent two battery modules 12, so that it is achieved that the module connection members 13 can conduct the current of the respective battery modules 12 in the battery 1. It can be understood that the module connecting member 13 may be disposed between two adjacent battery modules 12 facing each other in the stacking direction of the battery cells 121, and the module connecting member 13 may also be disposed between two adjacent battery modules 12 facing each other in the extending direction of the battery cells 121, so that the arrangement of the module connecting member 13 is flexible, and thus, the connection of the battery modules 12 at different positions can be easily achieved to ensure the normal operation of the battery 1.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

In the description of the utility model, a "first feature" or "second feature" may include one or more of such features.

In the description of the present utility model, "plurality" means two or more.

In the description of the utility model, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, and may also include the first and second features not being in direct contact but being in contact with each other by another feature therebetween.

In the description of the utility model, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery module, comprising:

the battery cell is provided with end faces at two ends in the extending direction, at least one of the two end faces is provided with a tab, and the battery cell is provided with a top face, a bottom face and a side face which are connected with the two end faces;

and at least one part of the adapter is connected with the lug of the end face, and at least one other part of the adapter extends to the top face.

2. The battery module according to claim 1, wherein the cells are configured in a plurality of stacked arrangement in the thickness direction, and the adapter is configured in a plurality of and connects tabs on the end faces on the same side as two adjacent cells.

3. The battery module according to claim 2, further comprising: and the sampling plate is respectively connected with a plurality of the switching pieces positioned at one end of the same side of the battery cell.

4. The battery module according to claim 3, wherein each of the adapters comprises:

the converging part is arranged on the top surface of the battery cell and is suitable for being connected with the sampling plate;

and the connecting section is connected with the converging part, extends to the end face of the battery cell and is connected with the electrode lug.

5. The battery module according to claim 4, wherein the connection section is constructed in a plurality and is connected to the tabs at the same side ends of the plurality of battery cells, respectively.

6. The battery module according to claim 5, wherein the sampling plate is disposed on the top surface and is connected to the plurality of the confluence parts, respectively.

7. The battery module of claim 6, further comprising: sampling connecting piece, sampling connecting piece structure is a plurality of and every sampling connecting piece's one end with sampling board is connected, sampling connecting piece's the other end with corresponding converging portion is connected.

8. The battery module of claim 6, further comprising:

the first insulating pieces and the second insulating pieces are respectively arranged on the top surfaces of the plurality of electric cores at intervals in the extending direction of the electric cores, and the first insulating pieces and the second insulating pieces are respectively covered on the converging parts at two ends of the top surface of each electric core;

and the pressing plate is covered on the top surface of the battery cell and is positioned between the first insulating piece and the second insulating piece.

9. A battery, comprising:

a housing in which a receiving chamber is formed;

a battery module provided in the receiving chamber and configured as the battery module of any one of claims 1 to 8.

10. The battery according to claim 9, wherein the battery modules are constructed in plurality, and a module connector is provided between adjacent two of the battery modules, the module connector connecting the adapter members of the adjacent two of the battery modules.