CN216850231U - Battery and battery pack - Google Patents

Abstract

The utility model relates to a battery technology field provides a battery and group battery. The battery includes: a battery case; the pole component is arranged on the battery shell, at least part of the pole component is located on the outer side of the battery shell, the pole component comprises a first connecting surface and a second connecting surface, and the first connecting surface and the second connecting surface are respectively used for connecting the busbar and the signal acquisition end. Through be provided with first connection face and second connection face on utmost point post subassembly to can make first connection face and second connection face be used for connecting busbar and signal acquisition end respectively, with this application scope who improves utmost point post subassembly, and can improve space utilization at the battery in groups in-process, and consider the stability of utmost point post subassembly on battery housing and can improve the connection stability of signal acquisition end and utmost point post subassembly, reduce the risk that the signal acquisition end breaks away from utmost point post subassembly, with this performance that improves the battery.

Description

Battery and battery pack

Technical Field

The utility model relates to a battery technology field especially relates to a battery and group battery.

Background

In the related art, when the cells are grouped, the cells need to be connected in series and in parallel through the bus bars. And the group battery generally all is provided with control circuit board and realizes gathering the voltage and the temperature of group battery, however, because group battery structural constraint, the busbar need be connected to control circuit board to can appear connecting not hard up scheduling problem in the in-process of uniting.

SUMMERY OF THE UTILITY MODEL

The utility model provides a battery and group battery to improve the performance of battery.

According to a first aspect of the present invention, there is provided a battery, comprising:

a battery case;

the pole component is arranged on the battery shell, at least part of the pole component is located on the outer side of the battery shell, the pole component comprises a first connecting surface and a second connecting surface, and the first connecting surface and the second connecting surface are respectively used for connecting the busbar and the signal acquisition end.

The utility model discloses battery includes battery housing and utmost point post subassembly, and utmost point post subassembly sets up in battery housing. Through be provided with first connection face and second connection face on utmost point post subassembly to can make first connection face and second connection face be used for connecting busbar and signal acquisition end respectively, with this application scope who improves utmost point post subassembly, and can improve space utilization at the battery in groups in-process, and consider the stability of utmost point post subassembly on battery housing and can improve the connection stability of signal acquisition end and utmost point post subassembly, reduce the risk that the signal acquisition end breaks away from utmost point post subassembly, with this performance that improves the battery.

According to a second aspect of the present invention, there is provided a battery pack comprising the above battery.

The utility model discloses group battery includes the battery, and the battery includes battery housing and utmost point post subassembly, and utmost point post subassembly sets up in battery housing. Through be provided with first connection face and second connection face on utmost point post subassembly to can make first connection face and second connection face connect busbar and signal acquisition end respectively, with this application scope who improves utmost point post subassembly, and can improve space utilization at battery group in-process, and consider that the stability of utmost point post subassembly on battery housing can improve the connection stability of signal acquisition end and utmost point post subassembly, reduce the risk that the signal acquisition end breaks away from utmost point post subassembly, with this performance that improves the group battery.

Drawings

For a better understanding of the present disclosure, reference may be made to the embodiments illustrated in the following drawings. The components in the drawings are not necessarily to scale, and related elements may be omitted so as to emphasize and clearly illustrate the technical features of the present disclosure. In addition, the relevant elements or components may be arranged differently as is known in the art. Further, in the drawings, like reference characters designate the same or similar parts throughout the several views. Wherein:

fig. 1 is a partial structural schematic view of a battery pack according to an exemplary embodiment;

fig. 2 is a partial structural schematic diagram illustrating a battery according to an exemplary embodiment.

The reference numerals are explained below:

1. a bus bar; 2. a signal acquisition end; 3. a circuit board assembly; 10. a battery case; 11. a first surface; 12. a second surface; 13. recessing; 20. a pole assembly; 21. a first connection face; 22. a second connection face; 23. a terminal; 231. a support portion; 232. a connecting portion; 2321. a first connecting member; 2322. a second connecting member; 2323. a third connecting member; 24. and (4) a pole.

Detailed Description

The technical solutions in the exemplary embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the exemplary embodiments of the present disclosure. The example embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the present disclosure, and it is, therefore, to be understood that various modifications and changes may be made to the example embodiments without departing from the scope of the present disclosure.

In the description of the present disclosure, unless explicitly specified or limited otherwise, the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance; the term "plurality" means two or more; the term "and/or" includes any and all combinations of one or more of the associated listed items. In particular, reference to "the" object or "an" object is also intended to mean one of many such objects possible.

The terms "connected," "secured," and the like are to be construed broadly and unless otherwise stated or indicated, and for example, "connected" may be a fixed connection, a removable connection, an integral connection, an electrical connection, or a signal connection; "connected" may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present disclosure can be understood by those skilled in the art as the case may be.

Further, in the description of the present disclosure, it is to be understood that the directional words "upper", "lower", "inner", "outer", etc., which are described in the exemplary embodiments of the present disclosure, are described at the angles shown in the drawings, and should not be construed as limiting the exemplary embodiments of the present disclosure. It will also be understood that, in the context of a connection between one element or feature and another element(s), "on," "under," or "inside" or "outside," it can be directly connected to the other element(s) "on," "under" or "inside" or "outside," or indirectly connected to the other element(s) "on," "under" or "inside" or "outside" through intervening elements.

An embodiment of the present invention provides a battery, please refer to fig. 1 and fig. 2, the battery includes: a battery case 10; utmost point post subassembly 20, utmost point post subassembly 20 set up in battery case 10, and utmost point post subassembly 20 at least part is located the battery case 10 outside, and utmost point post subassembly 20 includes first connection face 21 and second connection face 22, and first connection face 21 and second connection face 22 are used for connecting busbar 1 and signal acquisition end 2 respectively.

The utility model discloses a battery of an embodiment includes battery housing 10 and utmost point post subassembly 20, and utmost point post subassembly 20 sets up in battery housing 10. Through be provided with first connection face 21 and second connection face 22 on utmost point post subassembly 20, thereby can make first connection face 21 and second connection face 22 be used for connecting busbar 1 and signal acquisition end 2 respectively, with this application scope who improves utmost point post subassembly 20, and can improve space utilization at battery in group in-process, and consider that the stability of utmost point post subassembly 20 on battery housing 10 can improve the connection stability of signal acquisition end 2 and utmost point post subassembly 20, reduce the risk that signal acquisition end 2 breaks away from utmost point post subassembly 20, with this performance that improves the battery.

It should be noted that, the signal acquisition terminal 2 in the related art is connected to the busbar 1, which not only affects the space utilization of the battery pack, but also because the busbar 1 is connected to the post assembly 20, the stability of the busbar 1 is lower than that of the post assembly 20, and the risk that the signal acquisition terminal 2 falls off easily occurs. In this embodiment, the signal acquisition terminal 2 is connected to the pole assembly 20, so that the space utilization rate of the battery pack can be improved, and the risk that the signal acquisition terminal 2 is separated from the pole assembly 20 can be reduced.

The battery includes a cell and an electrolyte, and a minimum unit capable of performing an electrochemical reaction such as charge/discharge. The battery cell refers to a unit formed by winding or laminating a stack including a first electrode, a separator, and a second electrode. When the first electrode is a positive electrode, the second electrode is a negative electrode. Wherein the polarities of the first electrode and the second electrode can be interchanged. The battery core is disposed in the battery casing 10, the pole assembly 20 is electrically connected to the battery core, and a part of the pole assembly 20 may be disposed in the battery casing 10, so as to facilitate the electrical connection of the pole assembly 20 to the battery core, and certainly, in some embodiments, the whole pole assembly 20 is not disposed outside the battery casing 10. The pole assembly 20 and the battery core may be connected through an adaptor sheet, or the pole assembly 20 and the battery core may be directly connected.

Specifically, the cell may be a laminated cell, and the cell has a first electrode, a second electrode opposite to the first electrode, and a diaphragm disposed between the first electrode and the second electrode, which are stacked on top of each other, so that a plurality of pairs of the first electrode and the second electrode are stacked to form the laminated cell.

The battery may also be a wound battery, that is, a first electrode, a second electrode opposite to the first electrode in electrical property, and a diaphragm sheet disposed between the first electrode and the second electrode are wound to obtain a wound battery core.

The battery case 10 may include a first case member and a second case member connected to the first case member to form a receiving space in which the battery cell is disposed, thereby ensuring reliable sealing of the battery cell. The first shell piece and the second shell piece can both form a space, and after the first shell piece and the second shell piece are in butt joint, the battery cell is located in an accommodating space formed by the two spaces. The first housing member and the second housing member may have the same or different spatial depths, and are not limited herein. The first housing member may be a flat plate, and the second housing member forms a space.

In one embodiment, an included angle is formed between the first connection surface 21 and the second connection surface 22, that is, an included angle greater than 0 and smaller than 180 degrees is formed between the first connection surface 21 and the second connection surface 22, so that the bus bar 1 and the signal acquisition terminal 2 can be prevented from being connected to the same surface of the pole assembly 20, which not only facilitates connection, but also improves connection stability of the bus bar 1 and the signal acquisition terminal 2.

Specifically, considering that the first connection surface 21 and the second connection surface 22 have an included angle therebetween, after the busbar 1 is connected to the post assembly 20, the battery and the busbar 1 may be installed into the battery box first, and then the connection between the signal acquisition terminal 2 and the second connection surface 22 is completed, so as to avoid the risk that the signal acquisition terminal 2 is connected to the busbar 1 before the battery and the busbar 1 are installed into the battery box, and the signal acquisition terminal 2 is separated during the installation process.

In one embodiment, as shown in fig. 2, the first connection surface 21 and the second connection surface 22 are substantially perpendicular, which not only facilitates the connection of the bus bar 1 and the signal collecting terminal 2 to the post assembly 20, but also improves the compactness of the post assembly 20.

It should be noted that the first connecting surface 21 and the second connecting surface 22 are substantially perpendicular, and here, the emphasis is to highlight that the first connecting surface 21 and the second connecting surface 22 are perpendicular regardless of the manufacturing error and the installation error.

In one embodiment, as shown in fig. 2, the pole assembly 20 includes: a terminal 23, at least a part of the terminal 23 being located outside the battery case 10; a post 24, the post 24 being connected to the terminal 23, at least a portion of the post 24 being located inside the battery case 10; wherein the terminal 23 includes a first connection face 21 and a second connection face 22, so that the bus bar 1 and the signal collecting terminal 2 can be connected to the terminal 23. The arrangement of the pole 24 can facilitate the connection of the pole assembly 20 with the battery cell.

The number of the poles 24 may be at least two, and as shown in fig. 2, the number of the poles 24 may be two, two poles 24 are disposed on the terminal 23 at intervals, and a part of the poles 24 may be located inside the battery case 10, so that the poles 24 are connected with the pole tabs of the battery cell.

In one embodiment, as shown in fig. 2, the terminal 23 includes: a support portion 231, the support portion 231 being provided in the battery case 10, the pole 24 being connected to the support portion 231; a connection portion 232, wherein the connection portion 232 is connected to the support portion 231, and the connection portion 232 includes a first connection surface 21 and a second connection surface 22; wherein, an included angle is formed between the supporting portion 231 and the connecting portion 232, the supporting portion 231 can be reliably fixed on the battery shell 10, and an included angle is formed between the supporting portion 231 and the connecting portion 232, so that the bus bar 1 and the signal acquisition end 2 can be conveniently and reliably connected with the connecting portion 232.

In one embodiment, as shown in fig. 2, the connection portion 232 includes: a first connection member 2321, the first connection member 2321 being connected to the support portion 231, the first connection member 2321 including a first connection surface 21; a second connection member 2322, the second connection member 2322 being connected to the support part 231; the third connecting member 2323 and the third connecting member 2323 are connected to the supporting portion 231, the second connecting member 2322 and the third connecting member 2323 are respectively located at two opposite ends of the first connecting member 2321, and the second connecting member 2322 or the third connecting member 2323 includes the second connecting surface 22, so that the second connecting member 2322 and the third connecting member 2323 can be selectively used as a connecting structure of the signal collecting end 2, thereby improving the adaptability of the pole assembly 20.

In one embodiment, the second connecting member 2322 and the third connecting member 2323 are connected to the opposite ends of the first connecting member 2321, so that the structural strength of the pole assembly 20 can be improved, and the first connecting member 2321, the second connecting member 2322 and the third connecting member 2323 can be stably connected to the supporting part 231.

In one embodiment, the second connection member 2322 and the third connection member 2323 are consistent in structure, so that the second connection member 2322 or the third connection member 2323 can be used as a connection structure of the signal acquisition terminal 2, and the installation direction does not need to be considered intentionally in the installation process of the pole assembly 20, thereby improving the installation efficiency of the pole assembly 20.

The second connection member 2322 and the third connection member 2323 are centrosymmetric with respect to the center line of the first connection member 2321, so that the installation direction may not be considered intentionally in the installation process of the pole assembly 20, the installation efficiency of the pole assembly 20 is improved, and the accuracy of the subsequent connection position can be ensured.

It should be noted that the second connecting member 2322 and the third connecting member 2323 can selectively achieve connection with the signal acquisition end 2, where the selection needs to be made according to the installation positions of the second connecting member 2322 and the third connecting member 2323, and actually, the second connecting member 2322 and the third connecting member 2323 are not particularly structurally distinguished, and actually, only the installation positions are different.

In one embodiment, the first connection member 2321, the second connection member 2322, and the third connection member 2323 are substantially perpendicular to the support portion 231; the first connecting member 2321 is substantially perpendicular to the second connecting member 2322, and the first connecting member 2321 is substantially perpendicular to the third connecting member 2323, so that the bus bar 1 and the signal acquisition terminal 2 are conveniently connected to the post assembly 20, and the structural compactness of the post assembly 20 can be improved, thereby improving the service performance of the battery.

The first connecting member 2321, the second connecting member 2322 and the third connecting member 2323 are disposed at three edge positions of the supporting portion 231, the first connecting member 2321, the second connecting member 2322 and the third connecting member 2323 are all substantially rectangular structures, and the supporting portion 231 is also substantially rectangular structure.

It should be noted that, here, the first connecting member 2321, the second connecting member 2322 and the third connecting member 2323 are substantially perpendicular, and when the manufacturing error is not considered due to the protrusion, the mounting error is considered, the first connecting member 2321 is perpendicular to the supporting portion 231, the second connecting member 2322 is perpendicular to the first connecting member 2321, and the third connecting member 2323 is perpendicular to the first connecting member 2321.

In one embodiment, the terminal 23 is an integrally formed structure, which not only can improve the structural strength of the terminal 23, but also can improve the manufacturing efficiency of the terminal 23.

In one embodiment, as shown in fig. 2, the battery housing 10 includes two opposite first surfaces 11 and four second surfaces 12 surrounding the first surfaces 11, the area of the first surfaces 11 is larger than that of the second surfaces 12, and the pole assembly 20 is disposed on the first surfaces 11, so that the pole assembly 20 can have a reliable supporting surface, thereby ensuring the stability of the pole assembly 20.

It should be noted that the two opposite first surfaces 11 are large surfaces of the battery case 10, the four second surfaces 12 are small surfaces of the battery case 10, the four second surfaces 12 include two pairs of small surfaces, i.e., a first pair of small surfaces extending along the length direction of the battery case 10, and a second pair of small surfaces extending along the width direction of the battery case 10, and the areas of the first pair of small surfaces are larger than the areas of the second pair of small surfaces, but smaller than the areas of the large surfaces.

In certain embodiments, it is not excluded that the pole assembly 20 may be disposed on the second surface 12.

In some embodiments, there are two pole assemblies 20, two pole assemblies 20 are a positive pole assembly and a negative pole assembly, respectively, there are two tabs of the battery cell, the two tabs are a positive tab and a negative tab, respectively, the positive pole assembly is connected with the positive tab, and the negative pole assembly is connected with the negative tab.

As shown in fig. 2, the battery case 10 may be provided with two recesses 13, and the two recesses 13 and the two pole assemblies 20 may be respectively located on two opposite surfaces of the battery case 10. At this time, when the batteries are grouped, the pole assembly 20 of another battery can be received in the recess 13, thereby increasing the energy density of the battery pack.

In certain embodiments, it is not excluded that the pole assembly 20 of the battery may be disposed within the recess 13 of the battery.

The terminal post assembly 20 may be disposed at an end of the battery case 10, so that the connection is facilitated and the length and space of the battery can be fully utilized. The two pole assemblies 20 may be disposed on the same surface of the battery case 10, or the two pole assemblies 20 may be disposed on both surfaces of the battery case 10.

The battery case 10 may have a substantially rectangular structure, that is, the battery case 10 may have a rectangular structure in consideration of manufacturing tolerances.

An embodiment of the utility model also provides a group battery, including foretell battery.

The utility model discloses a group battery of embodiment includes the battery, and the battery includes battery housing 10 and utmost point post subassembly 20, and utmost point post subassembly 20 sets up in battery housing 10. Through be provided with first connection face 21 and second connection face 22 on utmost point post subassembly 20, thereby can make first connection face 21 and second connection face 22 connect busbar 1 and signal acquisition end 2 respectively, with this application scope who improves utmost point post subassembly 20, and can improve space utilization at the battery in group in-process, and consider that the stability of utmost point post subassembly 20 on battery housing 10 can improve the connection stability of signal acquisition end 2 and utmost point post subassembly 20, reduce the risk that signal acquisition end 2 breaks away from utmost point post subassembly 20, with this performance that improves the group battery.

In one embodiment, as shown in fig. 1, the battery pack further includes: the bus bar 1, the bus bar 1 is connected with the first connecting surface 21 of the pole assembly 20; the circuit board assembly 3, the circuit board assembly 3 includes the signal acquisition end 2, the signal acquisition end 2 links with the second connection surface 22 of the pole assembly 20; the second connection surface 22 is located above the first connection surface 21, so that after the bus bar 1 and the battery are installed in the battery box, the connection between the signal acquisition end 2 and the pole assembly 20 is completed, and the problem that the signal acquisition end 2 is collided in the assembling process can be avoided.

It should be noted that the bus bar 1 and the first connection surface 21 of the pole assembly 20 may be welded, and the signal collecting terminal 2 and the second connection surface 22 of the pole assembly 20 may be welded. The welding form of signal acquisition end 2 and busbar 1 among the correlation technique is welding before the income case, because the income case process has the excessive pressure, and the welding department of signal acquisition end 2 and busbar 1, the excessive pressure process, must be stress concentration department, causes the face of weld impaired even inefficacy easily, influences signal acquisition. And the welding of the second connection surface 22 of the signal acquisition end 2 and the pole assembly 20 in the embodiment can be performed after entering the box, so that the above problem can be avoided, and the connection stability of the signal acquisition end 2 and the pole assembly 20 is improved.

The circuit board assembly 3 may include a temperature harvester and a voltage harvester. The temperature collector can be one or more. The voltage collector may be one or more.

In one embodiment, the battery pack may include at least two cells, with the bus bar 1 connecting two pole assemblies 20 of two adjacent cells.

The battery pack is a battery module or a battery pack.

The battery module includes a plurality of batteries, and the battery module may further include an end plate and a side plate for fixing the plurality of batteries.

The battery pack may include a battery case, and the plurality of batteries may be disposed in the battery case. A plurality of batteries can set up in the battery box after forming battery module, and a plurality of batteries can be fixed through end plate and curb plate. A plurality of batteries can directly set up in the battery box, need not to pack a plurality of batteries promptly, and at this moment, can get rid of end plate and curb plate.

The battery box can include frame and bottom plate, and the frame is connected on the bottom plate to this has formed the cavity that is used for holding the battery, and first connection face 21 sets up towards the frame, and the second is connected face 22 and is deviated from the bottom plate setting, thereby conveniently connects busbar 1 and the connection of signal acquisition end 2, with this packaging efficiency who improves the group battery. The bottom plate can be the end backplate, and the bottom also can be the liquid cooling board, does not do the injecion this time, and the bottom plate is used for forming the bottom sprag and the bottom protection of battery box.

The first surfaces 11 of adjacent cells may be oppositely disposed such that the second surfaces 12 of the cells form the ends of the cells with the bus bar 1 and a portion of the signal acquisition terminal 2 at the ends of the cells. The frame can include a plurality of roof beams, and a plurality of roof beams have enclosed the cavity, and first connecting surface 21 sets up towards the roof beam, can make bus bar 1 and signal acquisition end 2 arrange more rationally to this make full use of battery box inner space.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the invention disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the invention following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and example embodiments be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. A battery, comprising:

a battery case (10);

utmost point post subassembly (20), utmost point post subassembly (20) set up in battery housing (10), just the at least part of utmost point post subassembly (20) is located the battery housing (10) outside, utmost point post subassembly (20) are connected face (22) including first connection face (21) and second, first connection face (21) with second connection face (22) are used for connecting busbar (1) and signal acquisition end (2) respectively.

2. The battery according to claim 1, wherein the first connection face (21) and the second connection face (22) have an included angle therebetween.

3. The battery according to claim 2, characterized in that the first connection face (21) and the second connection face (22) are substantially perpendicular.

4. A battery according to any of claims 1-3, characterized in that the pole assembly (20) comprises:

a terminal (23), at least part of the terminal (23) being located outside the battery case (10);

a pole (24), the pole (24) being connected to the terminal (23), at least part of the pole (24) being located inside the battery case (10);

wherein the terminal (23) comprises the first connection face (21) and the second connection face (22).

5. The battery according to claim 4, characterized in that the terminal (23) comprises:

a support portion (231), the support portion (231) being provided to the battery case (10), the pole (24) being connected to the support portion (231);

a connection portion (232), the connection portion (232) being connected to the support portion (231), the connection portion (232) including the first connection face (21) and the second connection face (22);

wherein, an included angle is formed between the supporting part (231) and the connecting part (232).

6. The battery according to claim 5, wherein the connection portion (232) includes:

a first connection member (2321), the first connection member (2321) being connected to the support portion (231), the first connection member (2321) including the first connection surface (21);

a second connection member (2322), the second connection member (2322) being connected to the support portion (231);

a third connecting member (2323), wherein the third connecting member (2323) is connected to the supporting portion (231), and the second connecting member (2322) and the third connecting member (2323) are respectively located at two opposite ends of the first connecting member (2321);

wherein the second connection piece (2322) or the third connection piece (2323) comprises the second connection face (22).

7. The battery according to claim 6, wherein the second connection member (2322) and the third connection member (2323) are identical in structure, and the second connection member (2322) and the third connection member (2323) are centrosymmetric with respect to a center line of the first connection member (2321).

8. A battery pack characterized by comprising the battery according to any one of claims 1 to 7.

9. The battery pack of claim 8, further comprising:

a busbar (1), wherein the busbar (1) is connected to the first connection surface (21) of the pole assembly (20);

the circuit board assembly (3) comprises a signal acquisition end (2), and the signal acquisition end (2) is connected with the second connection surface (22) of the pole assembly (20);

wherein the second connection face (22) is located above the first connection face (21).

10. The battery pack according to claim 8 or 9, wherein the battery pack further comprises a battery case, a plurality of batteries being arranged in the battery case, the battery case comprising a rim and a bottom plate, the first connection face (21) being arranged towards the rim and the second connection face (22) being arranged away from the bottom plate.

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