CN218299854U

CN218299854U - Battery cell structure, battery and vehicle

Info

Publication number: CN218299854U
Application number: CN202222267128.7U
Authority: CN
Inventors: 杨文�; 伊炳希; 欧梅; 牟丽莎; 周安健
Original assignee: Chongqing Changan New Energy Automobile Technology Co Ltd
Current assignee: Deep Blue Automotive Technology Co.,Ltd.
Priority date: 2022-08-26
Filing date: 2022-08-26
Publication date: 2023-01-13
Anticipated expiration: 2032-08-26

Abstract

The utility model discloses an electricity core structure, battery and vehicle that has it, electricity core structure includes: the electrode core is provided with an end face of at least one end of the electrode core, wherein the end face is hexagonal and is provided with an electrolyte circulation hole; a current collector connected with a tab of the pole core, wherein; the end surface is composed of a first region and a second region, the second region is adjacent to the electrolyte circulation hole, and the current collector is disposed in the first region. According to the battery cell structure and the battery, the problem that the energy density of the battery of an automobile is low, the height space of the battery cell is compact between the top cover and the full-lug pole core connecting structure in the battery, and the electrolyte injection efficiency is low is solved.

Description

Battery cell structure, battery and vehicle

Technical Field

The utility model belongs to the technical field of auto-parts makes and specifically relates to an electricity core structure, battery and have its vehicle is related to.

Background

The existing hexagonal prism battery cell structure is a new cylinder-like battery cell structure, and when the capacity of a pole core in the hexagonal prism battery cell structure is large and more electrolyte can be contained in the battery, the service life of the pole core can be prolonged, so that the service life of the battery is prolonged, and the performance of the battery is improved.

Among the correlation technique, between the top cap of battery and full utmost point ear utmost point core connection structure, the high space of electric core is compact, and when electrolyte injection flow, the space that supplies electrolyte flow is little, is unfavorable for the injection of electrolyte, annotates liquid inefficiency.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, an object of the utility model is to provide an electricity core structure, battery for vehicle to the battery energy density who solves the car is little, in the battery between top cap and full utmost point ear utmost point core connection structure, the high space compactness of electric core, the problem of liquid inefficiency is annotated to electrolyte.

The utility model discloses still provide a vehicle that has above-mentioned battery.

According to the utility model discloses an electricity core structure for vehicle, include: the electrode core is provided with an end face of at least one end of the electrode core, wherein the end face is hexagonal and is provided with an electrolyte circulation hole; the current collector is connected with a tab of the pole core, wherein the current collector is connected with the tab of the pole core; the end surface is composed of a first region and a second region, the second region is adjacent to the electrolyte circulation hole, and the current collector is disposed in the first region.

According to the utility model discloses an electricity core structure is the hexagon through the terminal surface structure with the at least one end of utmost point core, has improved the energy density and the space utilization of utmost point core, sets up the mass flow body in first region, utilizes the second terminal surface can release the space that is used for holding electrolyte, has increased the flow area of the injection passageway of electrolyte, has improved the notes liquid efficiency of electrolyte.

According to the utility model discloses an embodiment, first region structure is a plurality of, and is a plurality of first region uses the electrolyte circulation hole is in as the centre of a circle the interval sets up in the circumference of terminal surface, adjacent two be provided with between the first region the second is regional.

According to an embodiment of the present invention, the first region and the second region are both configured as a triangle or a diamond with the electrolyte communication hole as a vertex.

According to an embodiment of the present invention, the current collector is a plurality of and every the current collector is constructed as a triangle or a diamond, every the current collector covers in corresponding in the first area.

According to the utility model discloses a battery for vehicle, include: a housing formed with an accommodating chamber opened at least one end; the battery cell structure is accommodated in the accommodating cavity, and the battery cell structure is the battery cell structure in any one of the above embodiments.

According to an embodiment of the present invention, a battery for a vehicle further includes: the end cover is provided with a pole and closes the open end of the accommodating cavity; the adapter is provided with a connecting part and an adapter part, the adapter part is fixed with the end cover and connected with the pole, and the connecting part is opposite to and connected with the current collector.

According to the utility model discloses an embodiment, the connecting portion structure be with a plurality of first regional one-to-one, the switching portion respectively with a plurality of connecting portion are connected.

According to an embodiment of the invention, the connecting portion is configured as a triangle and/or a diamond.

According to the utility model discloses an embodiment, switching portion includes: a body adapted to be secured with the end cap; the bending device comprises a bending foot, one end of the bending foot is connected with the body, and the other end of the bending foot extends towards the direction far away from the body and is connected with the connecting part.

According to the utility model discloses an embodiment, be provided with on the end cover with hold the notes liquid hole of chamber UNICOM, annotate the liquid hole with the second is regional just right.

The vehicle according to the present invention is briefly described below.

According to the utility model discloses a be provided with any one in the above-mentioned embodiment on the vehicle the battery, because according to the utility model discloses a be provided with any one in the above-mentioned embodiment on the vehicle the battery, consequently the electrolyte injection efficiency of battery is higher in this vehicle, and battery energy density is big, and the life of battery is longer, and user's use is experienced better.

Additional aspects and advantages of the invention 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 invention.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

fig. 1 is a schematic diagram of an explosion of a hexagonal columnar cell according to an embodiment of the present invention;

fig. 2 is a schematic view of an adapter according to an embodiment of the present invention before bending;

fig. 3 is a schematic view of a first region being triangular according to an embodiment of the invention;

fig. 4 is a schematic view of another first region being triangular according to an embodiment of the present invention;

fig. 5 is a schematic view of a single first region and a triangle according to an embodiment of the present invention;

fig. 6 is a schematic diagram of a first region having a diamond shape according to an embodiment of the present invention;

fig. 7 is a schematic diagram of a single first region and a diamond shape, according to an embodiment of the present invention.

Reference numerals are as follows:

an end cover 1, a liquid injection hole 2, a pole core 3, a shell 4, an adapter 5, a first area 6, a second area 7, an electrolyte circulation hole 8,

the connection between the adapter portion 51, the connection portion 52,

a body 511 and a bending leg 512.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

The existing hexagonal prism battery cell structure is a new cylinder-like battery cell structure form, when the capacity of the pole core 3 in the hexagonal prism battery cell structure is large, and more electrolyte can be contained in the battery, the service life of the pole core 3 can be longer, so that the service life of the battery is prolonged, and the performance of the battery is improved.

In the correlation technique, between the top cap of battery and 3 connection structure of full utmost point ear utmost point core, the high space of electric core is compact, and when electrolyte pours into the flow, the space that supplies electrolyte to flow is little, is unfavorable for the pouring into of electrolyte, annotates liquid inefficiency.

A cell structure according to an embodiment of the present invention is described below with reference to fig. 1 to 7.

According to the utility model discloses an electricity core structure includes utmost point core 3 and current-collecting body, and utmost point core 3 can also be for folding fashioned lamination formula utmost point core 3 for coiling core, and the terminal surface structure of the at least one end of utmost point core 3 is the hexagon, and utmost point core 3 can be constructed for unilateral play utmost point post or two sides play utmost point post's structure, and the terminal surface up end of the at least one end of utmost point core 3 is formed with electrolyte circulation hole 8, and the utmost point core 3 is soaked in the electrolyte inflow of being convenient for.

As shown in fig. 1, the end face of one end or both end faces of the pole piece 3 is composed of a first region 6 and a second region 7, the second region 7 is adjacent to the electrolyte circulation hole 8, and the electrolyte can be injected into the electrolyte circulation hole 8 through the electrolyte flow space provided by the second region 7. The mass flow body in this application sets up in first region 6, the one end of the mass flow body can and end cover 1 between the contact, because the second region 7 is interior not to be provided with the mass flow body, consequently, form the clearance that is suitable for the electrolyte circulation between the second region 7 of end cover 1 and terminal surface, annotate the liquid in-process to utmost point core 3 by end cover 1, electrolyte can get into electrolyte circulation hole 8 through the second region 7, the injection velocity of electrolyte has greatly been improved, the flow resistance of electrolyte injection has been reduced.

According to the utility model discloses an electricity core structure is the hexagon through the terminal surface structure with the at least one end of utmost point core 3, has improved the energy density and the space utilization of utmost point core 3, sets up the mass flow body in first region 6, utilizes the second terminal surface can release the space that is used for holding electrolyte, has increased the flow area of the injection passageway of electrolyte, has improved the notes liquid efficiency of electrolyte.

According to an embodiment of the present invention, the first regions 6 are configured to be plural, the plural first regions 6 are arranged at intervals in the circumferential direction of the end surface with the electrolyte flow through holes 8 as the center, and the second region 7 is arranged between two adjacent first regions 6, that is, the single or plural staggered distribution forming the first regions 6-the second regions 7-the first regions 6 is arranged on the end surface. Through the staggered distribution design, the current collector can collect the electric connectors on the pole core 3 and is connected with the poles on the end cover 1, meanwhile, the second area 7 can be adjacent to the electrolyte circulation hole 8, and the smooth circulation of the electrolyte is ensured. In addition, the first region 6 may be configured to be single, and when the first region 6 is configured to be single, the first region 6 may be provided at any position of the end surface. It will be appreciated that there is one first region 6, in which case there is also one corresponding second region 7, and that the second region 7 is still adjacent to the electrolyte flow aperture 8.

Here, the shapes of the first region 6 and the second region 7 may be arbitrary, and the first region 6 and the second region 7 together constitute the end face of the pole core 3.

As shown in fig. 3 to 7, according to an embodiment of the present invention, the first region 6 and the second region 7 are each configured in a triangular shape or a rhombic shape having the electrolyte communication holes as vertexes. Since the end face of at least one end of the core 3 is configured in a hexagonal shape, when the first region 6 is configured in a triangular shape with the electrolyte communication holes as vertexes, the corresponding second region 7 may be in a triangular shape or a rhombic shape; when the first regions 6 are formed in a rhombic shape having the electrolyte communication holes as vertexes, the corresponding second regions 7 are triangular. The first area 6 and the second area 7 are both triangular or rhombic, so that the area of the end face, which is in contact with the electrolyte, is increased, the space for flowing the electrolyte is increased, and the electrolyte can be injected more conveniently.

According to the utility model discloses an embodiment, the current collector sets up in first region 6, and every current collector covers in corresponding first region 6. Further, the current collector is plural and each current collector is configured in a triangular or rhombic shape, i.e., each first area 6 has a current collector with a corresponding shape. There is not the mass flow body in this application on second region 7, because the mass flow body has certain thickness, the height that does not have second region 7 of the mass flow body is less than and covers the first region 6 that has the mass flow body for second region 7 has the degree of depth of relative first region 6, and after end cover 1 and casing 4 cooperation, there is certain distance between the second region 7 on end cover 1 and the 3 terminal surfaces of utmost point core, has increased the flow space of electrolyte.

A battery according to an embodiment of the present invention is described below.

According to the utility model discloses a battery includes casing 4 and electric core structure, is formed with in casing 4 and holds the chamber in the open at least one end. It can be understood that the accommodating cavity can be opened at any end of the housing 4, and the positive electrode pole and the negative electrode pole corresponding to the battery are arranged at one end of the housing 4 on the same side; the chamber can also be constructed so that both ends are open, and the positive pole column and the negative pole column corresponding to the battery are respectively arranged at both ends of the housing 4. The pole core 3 is housed in the housing cavity, the case 4 serves to protect the pole core 3, and the case 4 may be configured as a hexagonal prism having a shape similar to that of the pole core 3, and further, the cell structure of this embodiment is configured as that of any one of the above-described embodiments.

As shown in fig. 1, the battery according to the present invention further includes an end cap 1 and an adapter 5, wherein the end cap 1 is provided with a terminal post and seals the open end of the accommodating cavity. The edge of the end cover 1 can be aligned and overlapped with the edge of the shell 4, the edge of the end cover 1 is welded with the shell 4 for sealing, and the pole core 3 and the current collector are sealed in the inner space of the cell. Adaptor 5 in this application is formed with connecting portion 52 and switching portion 51, switching portion 51 is fixed and is connected with utmost point post with end cover 1, connecting portion 52 just to being connected with the mass flow body, the mass flow body is used for connecting the utmost point ear in the utmost point core 3, the mass flow body is connected to on the utmost point post of end cover 1 through switching portion 51 to realized the utmost point post is connected on utmost point ear on the utmost point core 3 and the end cover 1.

According to the utility model discloses an embodiment, connecting portion 52 are constructed a plurality ofly with first region 6 one-to-one, and every connecting portion 52 covers in corresponding first region 6 and is connected with the mass flow body that corresponds, and switching portion 51 is connected with a plurality of connecting portions 52 respectively. The plurality of connecting portions 52 are arranged at even intervals in the circumferential direction. Every connecting portion 52 with the laminating of the ascending side surface in the current collector thickness direction that corresponds, the current collector is in the laminating of the ascending opposite side in thickness direction and the 6 face in first region, the utmost point ear on the 3 terminal surfaces of utmost point core is collected through the current collector, the current collector further collects to switching portion 51 through a plurality of connecting portions 52, thereby switching portion 51 and the utmost point post connection on the end cover 1 switch on the circuit between the utmost point post on utmost point core 3 and the end cover 1.

According to an embodiment of the present invention, the connecting portion 52 is configured as a triangle and/or a diamond. Each of the plurality of connecting portions 52 is configured as a triangle or each of the plurality of connecting portions 52 is configured as a diamond or at least one of the plurality of connecting portions 52 is configured as a triangle and at least another one of the plurality of connecting portions 52 is configured as a diamond. Further, when the first region 6 is configured as a triangle, the corresponding connection 52 is designed as a triangle; when the first region 6 is of diamond-shaped design, the corresponding connection 52 is of diamond-shaped design.

As shown in fig. 2, according to the utility model discloses an embodiment, switching portion 51 includes body 511 and the foot 512 of bending, and body 511 is suitable for fixedly with end cover 1, and body 511 can be for passing through welded connection with the fixed mode of end cover 1, and body 511 sets up in one side of end cover 1 towards utmost point core 3, and switching portion 51 can be sealed inside the battery jointly by end cover 1 and casing 4. The body 511 may be electrically connected to a pole on the end cap 1 to achieve electrical conduction from the pole core 3 to the pole.

One end of the bending leg 512 is connected to the body 511, the other end of the bending leg 512 extends towards the direction far away from the body 511 and is connected to the connecting portion 52, the bending leg 512 can be bent and welded, in the assembling process, the body 511 and the terminal post can be welded and fixed by the switching portion 51 when not bent, a certain included angle is formed between the body 511 and the connecting portion 52 by the bending leg 512, the switching portion 51 and the corresponding current collector are further welded, the bending leg 512 is further bent after the welding is completed, so as to form the state shown in fig. 1, the body 511 and the bending leg 512 are overlapped, and the end cap 1 can seal the open opening of the shell 4. Through the design of bending, avoid bending foot 512 and shelter from the notes liquid passageway, increased the circulation space of notes liquid passageway.

According to the utility model discloses an embodiment, be provided with on the end cover 1 with hold the notes liquid hole 2 of chamber UNICOM, annotate liquid hole 2 and just right with second region 7. Because the second area 7 of the end face of the pole core 3 is away from the end cover 1 by a certain distance, a channel suitable for electrolyte circulation is formed between the end cover 1 and the end face of the pole core 3, the electrolyte injection hole 2 is opposite to the second area 7, the electrolyte can be ensured to enter the electrolyte circulation hole 8 on the end face through the circulation channel, the electrolyte injection hole 2 and the second area 7 are opposite to each other, the injection of the electrolyte is more favorably realized, the flow resistance of the electrolyte is reduced, and the electrolyte injection efficiency is improved.

The vehicle according to the present invention is briefly described below.

In the description of the present invention, it is to 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", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and for simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, "the first feature" and "the second feature" may include one or more of the features.

In the description of the present invention, "a plurality" means two or more.

In the description of the present invention, the first feature "on" or "under" the second feature may include the first and second features being in direct contact, and may also include the first and second features being in contact with each other not directly but through another feature therebetween.

In the description of the invention, the first feature being "on", "above" and "above" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature.

In the description of the present specification, reference to the description of "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. 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 invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean 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 present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

Claims

1. A cell structure, comprising:

a pole core (3), wherein the end face of at least one end of the pole core (3) is hexagonal, and an electrolyte circulation hole (8) is formed on the end face;

a current collector connected with a tab of the pole core (3), wherein;

the end face is composed of a first region (6) and a second region (7), the second region (7) is adjacent to the electrolyte circulation hole (8), and the current collector is provided in the first region (6).

2. The cell structure according to claim 1, wherein the first regions (6) are configured in a plurality, the first regions (6) are arranged at intervals in the circumferential direction of the end surface around the electrolyte circulation hole (8), and the second region (7) is arranged between two adjacent first regions (6).

3. The cell structure according to claim 2, wherein the first region (6) and the second region (7) are each configured as a triangle or a rhombus having the electrolyte communication holes as vertices.

4. The cell structure of claim 3, wherein the current collectors are plural and each current collector is configured as a triangle or a diamond, and each current collector covers the corresponding first area (6).

5. A battery, comprising:

a housing (4), wherein an accommodating cavity which is open at least one end is formed in the housing (4);

a cell structure housed in the housing cavity, the cell structure being configured as in any one of claims 1-4.

6. The battery of claim 5, further comprising:

the end cover (1) is provided with a pole column and closes the open end of the accommodating cavity;

the terminal comprises an adapter (5), wherein a connecting part (52) and an adapter part (51) are formed on the adapter (5), the adapter part (51) is fixed with the end cover (1) and is connected with the pole, and the connecting part (52) is opposite to and connected with the current collector.

7. The battery according to claim 6, wherein the connecting portions (52) are configured in a plurality in one-to-one correspondence with the first regions (6), and the adaptor portions (51) are connected to the plurality of connecting portions (52), respectively.

8. The battery according to claim 7, characterized in that the connection (52) is configured as a triangle and/or a diamond.

9. The battery according to claim 7, wherein the adaptor (51) comprises:

a body (511), said body (511) being adapted to be fixed with said end cap (1);

one end of the bending foot (512) is connected with the body (511), and the other end of the bending foot (512) extends towards the direction far away from the body (511) and is connected with the connecting part (52).

10. The cell according to claim 6, characterised in that the end cap (1) is provided with a filler hole (2) communicating with the housing chamber, the filler hole (2) facing the second zone (7).

11. A vehicle, characterized by comprising: the battery of any one of claims 5-10.