CN217086771U - 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 structure is arranged on the battery shell; the conductive connecting piece comprises a first section and a second section which are electrically connected, the first section and the second section are respectively electrically connected with the battery shell and the pole structure, the first section comprises an elastic part, and the elastic part is contacted with the battery shell. Through setting up electrically conductive connecting piece into first section and second section, battery case and utmost point post structure are connected respectively to first section and second section, and first section includes the elasticity portion, the elasticity portion contacts with battery case body, not only can guarantee that elasticity portion and battery case body form reliable contact, and the elasticity portion can form the buffering for being connected of electrically conductive connecting piece and battery case, thereby it is more stable to guarantee the contact between elasticity portion and the battery case, and can increase and resist the very bloated ability of vibrations, with the security performance who 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 correlation technique, the battery includes anodal utmost point post and negative pole utmost point post, and when the battery was used in groups, for the running state of real-time supervision battery, need carry out voltage acquisition through the circuit board, nevertheless because the mode of arranging of anodal utmost point post and negative pole utmost point post limits, the mode of arranging of circuit board is comparatively complicated.

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 structure is arranged on the battery shell;

the conductive connecting piece comprises a first section and a second section which are electrically connected, the first section and the second section are respectively electrically connected with the battery shell and the pole structure, the first section comprises an elastic part, and the elastic part is contacted with the battery shell.

The utility model discloses the battery of an embodiment includes battery housing, utmost point post structure and electrically conductive connecting piece, and utmost point post structure is connected through electrically conductive connecting piece and battery housing electricity to can make battery housing can regard as a current potential collection structure of battery, with this convenient subsequent connection. Through setting up electrically conductive connecting piece into first section and second section, battery case and utmost point post structure are connected respectively to first section and second section, and first section includes the elasticity portion, the elasticity portion contacts with battery case body, not only can guarantee that elasticity portion and battery case body form reliable contact, and the elasticity portion can form the buffering for being connected of electrically conductive connecting piece and battery case, thereby it is more stable to guarantee the contact between elasticity portion and the battery case, and can increase and resist the very bloated ability of vibrations, with the security performance who 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, utmost point post structure and electrically conductive connecting piece, and utmost point post structure is connected through electrically conductive connecting piece and battery housing electricity to can make battery housing can regard as a current potential collection structure of battery, with this convenient subsequent connection. Through setting up conductive connection spare into first section and second section, battery case and utmost point post structure are connected respectively to first section and second section, and first section includes the elasticity portion, the elasticity portion contacts with battery case body, not only can guarantee that elasticity portion and battery case body form reliable contact, and the elasticity portion can form the buffering for being connected of conductive connection spare and battery case, thereby it is more stable to guarantee the contact between elasticity portion and the battery case, and can increase and resist the very expanded ability of vibrations, with the security performance who 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 in order 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 view of a battery pack according to another exemplary embodiment;

FIG. 3 is a schematic diagram illustrating a partial structure of a battery according to an exemplary embodiment;

FIG. 4 is a partially enlarged schematic view of a battery according to an exemplary embodiment;

FIG. 5 is a schematic diagram illustrating a partial cross-sectional configuration of a battery according to an exemplary embodiment;

fig. 6 is a schematic structural view of a conductive connecting member and an insulating sheath of a battery according to a first exemplary embodiment;

fig. 7 is a schematic structural view showing a conductive connecting member and an insulating sheath of a battery according to a second exemplary embodiment;

FIG. 8 is a schematic structural diagram illustrating a first segment of a battery according to a first exemplary embodiment;

FIG. 9 is a schematic diagram illustrating the construction of a first segment of a battery according to a second exemplary embodiment;

fig. 10 is a schematic view showing the structure of an insulating sheath of a battery according to a first exemplary embodiment;

fig. 11 is a schematic view showing the structure of an insulating sheath of a battery according to a second exemplary embodiment;

FIG. 12 is a schematic diagram of a conductive connection of a battery according to an exemplary embodiment;

fig. 13 is a schematic diagram illustrating a structure of a conductive connection member of a battery according to another exemplary embodiment.

The reference numerals are explained below:

1. a bus bar; 10. a battery case; 11. a first surface; 12. a second surface; 13. a recessed portion; 14. a reinforcing portion; 20. a pole assembly; 21. a connecting surface; 22. a terminal; 221. a support portion; 222. a connecting portion; 23. a pole column; 24. accommodating grooves; 30. an insulating member; 31. a main body portion; 32. a positioning part; 40. a conductive connection member; 41. a first stage; 411. an elastic portion; 412. a second resistor; 413. a cavity; 42. a second stage; 43. a connecting section; 50. an insulating sleeve; 51. perforating; 52. avoiding a space; 60. an elastic insulating member.

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 otherwise explicitly specified or limited, the terms "first", "second", and "first" 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 to 13, the battery includes: a battery case 10; a pole structure disposed in the battery case 10; the conductive connecting piece 40, the conductive connecting piece 40 includes electrically connected first section 41 and second section 42, and first section 41 and second section 42 are connected battery case 10 and utmost point post structure respectively, and first section 41 includes elastic component 411, and elastic component 411 contacts with battery case 10.

The utility model discloses a battery of an embodiment includes battery housing 10, utmost point post structure and electrically conductive connecting piece 40, and utmost point post structure is connected with battery housing 10 electricity through electrically conductive connecting piece 40 to can make battery housing 10 can regard as a current potential collection structure of battery, with this convenient subsequent connection. Through setting up electrically conductive connecting piece 40 into first section 41 and second section 42, battery case 10 and utmost point post structure are connected respectively to first section 41 and second section 42, and first section 41 includes elastic component 411, elastic component 411 contacts with battery case 10, not only can guarantee that elastic component 411 and battery case 10 form reliable contact, and elastic component 411 can form the buffering for electrically conductive connecting piece 40 and battery case 10's connection, thereby guarantee that the contact between elastic component 411 and the battery case 10 is more stable, and can increase the ability of resisting vibrations and inflation, in order to improve the security performance of battery.

It should be noted that the battery may include two post structures, one of them post structure includes the positive pole post, another post structure includes the negative pole post, and the positive pole post can form the electricity with battery case 10 through electrically conductive connecting piece 40 and be connected, and at this moment, battery case 10 and negative pole post can regard as two electric potential collection points of battery to this makes things convenient for follow-up circuit board to be used for gathering the voltage of battery, and after all, each position of battery case 10 all can regard as electric potential collection point. When the positive electrode post is electrically connected to the battery case 10, the negative electrode post is insulated from the battery case 10, and correspondingly, when the negative electrode post is electrically connected to the battery case 10, the positive electrode post is insulated from the battery case 10.

The elastic part 411 is arranged to enable the elastic part 411 to be reliably abutted against the battery shell 10 during installation, and due to the buffering function of the elastic part, the battery shell 10 cannot be damaged, and even if the battery shell 10 deforms in the long-time use process, a certain buffering space can be provided due to the existence of the elastic part 411, so that the battery shell 10 is prevented from being excessively squeezed.

In one embodiment, the conductive connecting member 40 is detachably connected to the post structure, and the conductive connecting member 40 is detachably connected to the battery housing 10, so that the battery housing 10 and the post structure are electrically connected through the conductive connecting member 40, and the conductive connecting member 40 can be conveniently replaced and maintained, thereby improving the maintainability of the battery. Further, the first section 41 is detachably connected to the battery housing 10, and the second section 42 is detachably connected to the pole structure.

In one embodiment, the pole structure includes a pole assembly 20, the pole assembly 20 is disposed in the battery housing 10, and an insulating structure is disposed between the pole assembly 20 and the battery housing 10, for example, at least one of the pole assembly 20 and the battery housing 10 may be coated with an insulating layer, and the insulating layer may be a coating, such as aluminum oxide (Al) or the like ₂ O ₃ ) Zirconium oxide (ZrO) ₂ ) And the like.

In one embodiment, as shown in fig. 3 to 5, the pole structure further includes: an insulator 30, the insulator 30 being provided to the battery case 10; the pole assembly 20 is disposed on the insulating member 30, so that the pole assembly 20 is disposed on the battery housing 10 through the insulating member 30, and direct insulation between the pole assembly 20 and the battery housing 10 by the insulating member 30 can be achieved.

The second section 42 is electrically connected to the pole assembly 20, and at least a portion of the first section 41 is located in the insulating member 30, or a portion of the first section 41 is located in the pole assembly 20, so as to ensure that the conductive connecting member 40 is stably disposed in the pole structure.

In some embodiments, the conductive connector 40 may be inserted into the pole assembly 20, and the conductive connector 40 is connected with the battery housing 10.

In some embodiments, the conductive connector 40 may be inserted into the insulating member 30, and the conductive connector 40 is connected to both the pole assembly 20 and the battery case 10.

In one embodiment, the conductive connection member 40 may include a first section 41, a second section 42, and a connection section 43 connecting the first section 41 and the second section 42, and the connection section 43 may be interference-fitted with the insulating member 30, so that connection stability of the conductive connection member 40 may be improved. At least a portion of the connection section 43 may be disposed within the insulating sleeve 50, and the insulating sleeve 50 may be interference-fitted with the insulator 30, or the connection section 43 may be disposed on the circumferential outer side of the insulating sleeve 50, so that the connection section 43 and the insulating sleeve 50 may be interference-fitted with the insulator 30 at the same time.

It should be noted that the number of the pole structures may be two, and the two corresponding pole assemblies 20 are respectively a positive pole assembly and a negative pole assembly, and an insulating structure is disposed between each of the positive pole assembly and the negative pole assembly and the battery case 10 for insulation. And one of the positive electrode post assembly and the negative electrode post assembly is electrically connected to the battery case 10 through the conductive connection member 40.

In one embodiment, the battery case 10 is provided with the reinforcing part 14, and the conductive connecting member 40 is electrically connected to the reinforcing part 14, so that not only can the conductive connecting member 40 be reliably contacted with the battery case 10, but also the battery case 10 can have a certain structural strength, and the battery case 10 is prevented from being damaged by the conductive connecting member 40.

In one embodiment, the reinforcing part 14 includes a recess formed on the outer side of the battery case 10, as shown in fig. 5, not only can the battery case 10 have certain structural strength, but also a part of the conductive connection member 40 can be accommodated in the recess, thereby improving the space utilization of the structure.

In one embodiment, the reinforcing part 14 includes a recess formed inside the battery case 10, that is, the battery case 10 protrudes outward to make contact with the conductive connection member 40, so that the conductive connection member 40 can be appropriately reduced and the conductive connection member 40 and the battery case 10 can be ensured to be reliably contacted.

It should be noted that the arrangement of the recess not only can ensure that the strength of the battery case 10 is high, but also the surface formed by the recess can ensure high flatness, thereby ensuring that the conductive connecting member 40 and the battery case 10 are reliably contacted.

In one embodiment, the elastic portion 411 is a spring plate, which is not only simple in structure, but also provides sufficient buffer space to improve the contact stability between the elastic portion 411 and the battery case 10.

In one embodiment, the elastic sheet is a bending piece, i.e. a plane structure is bent similarly, so as to form a cantilever structure, thereby realizing reliable buffering.

As shown in fig. 13, the elastic sheet is a bending portion bent outward, and the bending portion contacts with the battery case 10, so that not only the reliable contact surface between the bending portion and the battery case 10 can be ensured, but also the bending portion can have a certain buffering function, and further, the bending portion can be clamped in a recess formed by the reinforcing portion 14, and the shock resistance can also be improved. The bending portion may be a plurality of bending portions, and the plurality of bending portions are connected to the first segment 41 at intervals.

As shown in fig. 6 and 12, the spring plate has a U-shaped structure, and a segment of the U-shaped structure can contact with the battery case 10, so as to form a cantilever structure, thereby providing a reliable buffering capability.

In some embodiments, the elastic portion 411 may also be a spring-like structure.

In one embodiment, as shown in fig. 7 to 9, the end of the elastic part 411 facing the battery case 10 is a cambered surface, which is not only simple to process, but also provides a sufficient contact area and has a good buffering performance. The elastic portion 411 may be an elastic spherical structure.

In one embodiment, as shown in fig. 7 to 9, a cavity 413 is formed at a side of the elastic part 411 facing the second section 42, so that the arc surface of the elastic part 411 can perform a reliable buffering function, thereby improving the contact capability of the elastic part 411 with the battery case 10 and providing sufficient buffering.

In one embodiment, the first section 41 and the second section 42 may be a unitary structure.

In one embodiment, the conductive connecting member 40 further includes a connecting section 43, the connecting section 43 electrically connects the first section 41 and the second section 42, and the first section 41 and the second section 42 are separately provided, so that the processing selectivity can be stronger, thereby matching with a more suitable connecting structure.

In one embodiment, the connection section 43 includes a safety portion, which can be disconnected when the current is too large, based on the connection of the first section 41 and the second section 42, so as to protect the battery. The fuse may be a fuse, or the fuse may be a structure having a relatively small cross-sectional area, for example, a solid structure with material removed so that the fuse can be fused under relatively high current conditions, thereby breaking the electrical connection between the post assembly 20 and the battery housing 10.

In one embodiment, as shown in fig. 6, 7, 10 and 11, the battery further includes an insulating sheath 50, both ends of the insulating sheath 50 are respectively provided with a first section 41 and a second section 42, and at least a portion of the connection section 43 is located inside the insulating sheath 50. The insulating sheath 50 can protect the connection section 43, and can improve the connection performance of the structure, further improve the anti-vibration performance. The insulating sheath 50 may be of plastic construction, or the insulating sheath 50 may be of rubber construction or the like.

In one embodiment, the insulating sheath 50 is provided with a through hole 51, at least part of the connecting section 43 is located within the through hole 51, and at least one of the opposite ends of the insulating sheath 50 is provided with an escape space 52; wherein at least one of the first segment 41 and the second segment 42 is welded with the connection segment 43, the welded connection can ensure the stability of the connection and can improve the connection efficiency. The avoiding space 52 is used for welding avoidance, that is, the first section 41 and the connecting section 43 are welded, the avoiding space 52 is arranged at one end of the insulating sleeve 50 close to the first section 41, the second section 42 and the connecting section 43 are welded, and the avoiding space 52 is arranged at the other end of the insulating sleeve 50 close to the second section 42.

As shown in fig. 10, the insulation sheath 50 is provided with a through hole 51 at an edge thereof, two ends of the connection section 43 may be respectively located at opposite ends of the through hole 51, and the connection section 43 is exposed through the through hole 51.

As shown in fig. 11, the insulation sheath 50 is provided with a through hole 51 at a middle position, and both ends of the connection section 43 may be respectively located at opposite ends of the through hole 51 so as to be respectively connected with the first section 41 and the second section 42.

As shown in fig. 11, the escape space 52 is provided so that the first section 41 or the second section 42 and the connecting section 43 are welded without damaging the insulating sheath 50. For example, one end of the connecting section 43 may be welded to the first section 41, the other end of the connecting section 43 is inserted through the through hole 51 to be located in the avoiding space 52, the second section 42 is covered on the avoiding space 52, and then the second section 42 is welded to the connecting section 43, in which case the welding energy is not rapidly transmitted to the insulating sheath 50, so as to protect the insulating sheath 50.

In one embodiment, the first segment 41 includes a first resistor, which is in contact with the battery case 10, so that a large current can be prevented from being generated between the conductive connection member 40 and the battery case 10, thereby improving the safety of the conductive connection member 40 and the battery case 10.

In one embodiment, as shown in fig. 9, the second resistor 412 is disposed on the first segment 41, and the second resistor 412 is in contact with the battery case 10, so that a large current can be prevented from being generated between the conductive connecting member 40 and the battery case 10, thereby improving the safety of the conductive connecting member 40 and the battery case 10.

It should be noted that the first segment 41 includes a first resistor, for example, the first segment 41 may be a first resistor, the first resistor may be a mixture of polyphenylene sulfide (PPS) and a conductive agent, the conductive agent may be a higher component, and the conductive agent may be a metal powder. The first resistor may be a mixture of polyethylene terephthalate (PET) and a conductive agent, the first resistor may be a mixture of polytrimethylene terephthalate (PTT) and a conductive agent, the first resistor may be a mixture of polypropylene (PP) and a conductive agent, and the first resistor may be a mixture of Polycarbonate (PC) and a conductive agent, and the selection of the first resistor is not limited herein and may be selected according to actual needs.

The first segment 41 is provided with a second resistor 412, the second resistor 412 may be a mixture of polyphenylene sulfide (PPS) and a conductive agent, the conductive agent may be a high component, and the conductive agent may be metal powder. The second resistor 412 may be a mixture of polyethylene terephthalate (PET) and a conductive agent, the second resistor 412 may be a mixture of polytrimethylene terephthalate (PTT) and a conductive agent, the second resistor 412 may be a mixture of polypropylene (PP) and a conductive agent, and the second resistor 412 may be a mixture of Polycarbonate (PC) and a conductive agent, and the selection of the first resistor is not limited herein and may be selected according to actual requirements.

In one embodiment, as shown in fig. 2, the battery further includes an elastic insulating member 60, the elastic insulating member 60 is disposed on one side of the conductive connecting member 40 away from the battery housing 10, so that two adjacent batteries can be reliably insulated from each other, and the elastic insulating member 60 can play a certain supporting role to prevent the battery housing from deforming greatly, and the elastic insulating member 60 can also protect the conductive connecting member 40 to improve the connection stability of the conductive connecting member 40. The elastic insulator 60 may be a rubber block, or the elastic insulator 60 may be a plastic block, or the elastic insulator 60 may be an elastic plastic block.

In one embodiment, as shown in fig. 1, 2 and 4, at least a portion of the insulating member 30 is located outside the battery case 10, and the connection surface 21 of the pole assembly 20 for connection with the bus bar 1 is disposed to protrude from the insulating member 30, thereby facilitating reliable connection of the bus bar 1 with the connection surface 21.

In one embodiment, the insulating member 30 is disposed on the battery housing 10 and covers the outer edge of the pole assembly 20, the insulating member 30 is disposed, and the insulating member 30 covers the outer edge of the pole assembly 20, so that the insulating member 30 can fix the pole assembly 20, and since the insulating member 30 is disposed on the battery housing 10, so that the pole assembly 20 can be disposed on the battery housing 10 through the insulating member 30, thereby ensuring that the pole assembly 20 and the insulating member 30 can have a sufficient contact area with the battery housing 10, thereby ensuring that the pole assembly 20 is stably disposed on the battery housing 10, at this time, the cross-sectional area of the pole assembly 20 can be properly reduced, so that the cost is saved, and the weight can be reduced.

The battery includes a cell and an electrolyte, and is 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 housing piece and the second housing piece may both form a space, and after the first housing piece and the second housing piece are butted, the battery cell is located in an accommodating space formed by the two spaces. The first housing part and the second housing part 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.

It should be noted that the insulating member 30 may be an injection molded member, and the insulating member 30 may be injection molded to the conductive connecting member 40. The insulator 30 may be made of plastic, and the insulator 30 may be made of rubber. The material of the insulating member 30 is not limited thereto.

In one embodiment, the size of the connecting surface 21 protruding the insulating member 30 is not greater than 0.1mm, which can enable the pole assembly 20 and the insulating member 30 to provide enough fixing support for the bus bar 1 on the basis of ensuring the bus bar 1 is reliably connected with the connecting surface 21, thereby ensuring the stability of the bus bar 1.

Busbar 1 and connection surface 21 can weld, and connection surface 21 protrudes insulating part 30's size is not more than 0.1mm for busbar 1 can not produce the rosin joint with connection surface 21, improves welding quality, and can make utmost point post subassembly 20 and insulating part 30 provide the fixed support portion, guarantee the supporting effect.

In some embodiments, the dimension of the connecting surface 21 protruding beyond the insulator 30 may be equal to 0.01mm, 0.02mm, 0.03mm, 0.05mm, 0.08mm, 0.09mm, 0.095mm, or 0.1mm, among others. The connecting surface 21 protrudes from the insulating member 30, so that the connecting surface 21 can be located outside the insulating member 30, thereby facilitating the bus bar 1 to be brought into reliable contact with the connecting surface 21, and ensuring the welding stability of the subsequent bus bar 1 to the connecting surface 21.

In one embodiment, the connection surface 21 is at an angle with respect to the surface of the battery housing 10 on which the pole assembly 20 is disposed, i.e., the connection surface 21 is at an angle with respect to the surface of the battery housing 10 on which the pole assembly 20 is disposed, which is greater than 0 degrees and less than 180 degrees, thereby facilitating the connection of the busbar 1 with the connection surface 21.

In some embodiments, as shown in fig. 3 and 4, the connecting surface 21 is substantially perpendicular to the surface of the battery housing 10 where the pole assembly 20 is disposed, so that when the batteries are grouped, the connection of the bus bar 1 with the connecting surface 21 can be facilitated, and the bus bar 1 is prevented from occupying too much battery grouping space, thereby ensuring the energy density of the battery pack.

It should be noted that the surface of the battery case 10 provided with the pole assembly 20 may be perpendicular to the stacking direction when a plurality of batteries are grouped. The connection surface 21 is substantially perpendicular to the surface of the battery case 10 on which the pole assembly 20 is disposed, and it is important here that the connection surface 21 is perpendicular to the surface of the battery case 10 on which the pole assembly 20 is disposed, regardless of manufacturing errors and mounting errors.

In certain embodiments, it is not excluded that the connection surface 21 is parallel to the surface of the battery housing 10 on which the pole assembly 20 is provided.

In one embodiment, as shown in fig. 3 and 4, the pole assembly 20 is provided with the receiving groove 24, and a portion of the insulating member 30 is located in the receiving groove 24, so that not only the volume of the pole assembly 20 can be reduced, but also the connection stability of the insulating member 30 and the pole assembly 20 can be ensured, thereby ensuring that the insulating member 30 and the pole assembly 20 are stably connected to the battery housing 10. At least a portion of the conductive connection member 40 may be disposed within the insulating member 30 located within the receiving groove 24.

The receiving groove 24 may be a recess, for example, a recess provided on the side of the pole assembly 20 facing the battery housing 10 and a portion of the insulating member 30 is located in the receiving groove 24, or a recess provided on the side of the pole assembly 20 facing away from the battery housing 10 and a portion of the insulating member 30 is located in the receiving groove 24. The receiving slot 24 may be a notch, as shown in fig. 3, and a portion of the insulating member 30 is located within the receiving slot 24.

It should be noted that, the specific structural form of the receiving groove 24 is not limited herein, and may be selected according to actual requirements, as long as it is ensured that the volume of the pole assembly 20 can be reduced, and the connection stability of the insulating member 30 and the pole assembly 20 can be ensured.

In one embodiment, a portion of the insulating member 30 is located between the battery housing 10 and the pole assembly 20, so that the pole assembly 20 can be connected to the battery housing 10 through the insulating member 30 on the basis of ensuring reliable insulation between the battery housing 10 and the pole assembly 20, thereby ensuring that the pole assembly 20 is stably connected to the battery housing 10.

It should be noted that, the whole of the insulating member 30 may be located outside the battery case 10, the insulating member 30 covers the outer edge of the pole assembly 20, so as to ensure the reliable connection between the pole assembly 20 and the insulating member 30, and a part of the insulating member 30 is located between the battery case 10 and the pole assembly 20, so as to enable the insulating member 30 to be reliably connected with the battery case 10, so as to ensure that the pole assembly 20 is stably connected to the battery case 10, so as to avoid the position adjustment of the pole assembly 20 during the use process, so as to ensure the use performance of the battery. Further, a part of the insulating part 30 is located in the accommodating groove 24 of the pole assembly 20, so that the size of the pole assembly 20 can be reduced, and the connection stability between the insulating part 30 and the pole assembly 20 can be further ensured.

In one embodiment, the insulating member 30 is disposed at the outer edge of the non-surrounding pole assembly 20, so that the problem of large volume of the insulating member 30 can be avoided on the basis of ensuring that the insulating member 30 is reliably connected to the pole assembly 20, thereby reducing the weight of the battery as a whole.

As shown in fig. 3 and 4, the insulating member 30 covers most of the outer edge of the pole assembly 20, so as to ensure that the insulating member 30 is reliably connected to the pole assembly 20, while the outer edge of part of the pole assembly 20 is not covered by the insulating member 30, specifically, the outer edge of the top end of the pole assembly 20 is not covered by the insulating member 30, and the insulating member 30 covers part of the outer edge of the connection surface 21, i.e., part of the outer edge of the connection surface 21 is not covered by the insulating member 30.

In one embodiment, the insulating members 30 cover at least two opposite ends of the pole assembly 20 along the length direction of the connecting surface 21, so that the upper and lower ends of the connecting surface 21 are provided with the insulating members 30, which not only can realize reliable protection of the connecting surface 21, but also can realize positioning of the bus bar 1 by the insulating members 30 at the upper and lower ends of the connecting surface 21 when the bus bar 1 is connected with the connecting surface 21.

The length direction of the connecting surface 21 can be considered as the width direction of the first surface 11, and further, the upper and lower ends of the connecting portion 222 of the pole assembly 20 are covered with the insulating member 30, as shown in fig. 3 and 4.

In one embodiment, as shown in fig. 3 and 4, the insulating member 30 includes: a body portion 31, at least part of the body portion 31 covering the outer edge of the pole assembly 20; the positioning portion 32 and the connecting surface 21 form an included angle therebetween, so that the positioning portion 32 and the connecting surface 21 are in limited contact with the busbar 1, positioning of the busbar 1 is facilitated in a connecting process, connection of the busbar 1 is facilitated, and connection efficiency of the busbar 1 is improved. The positioning parts 32 may be coupled with the battery case 10, thereby improving the coupling stability of the insulating member 30.

As shown in fig. 1, one surface of the bus bar 1 is connected to the connecting surface 21, so as to ensure reliable electrical connection between the bus bar 1 and the post assembly 20, and the other surface of the bus bar 1 is connected to the positioning portion 32, so as to facilitate positioning of the bus bar 1 during connection, so as to ensure that one surface of the bus bar 1 and the connecting surface 21 have reliable contact positions, so as to ensure that a reliable contact surface is provided between the bus bar 1 and the post assembly 20, so as to ensure overcurrent capability of the bus bar 1 and the post assembly 20.

In one embodiment, the positioning portion 32 is substantially perpendicular to the connecting surface 21, and the positioning portion 32 is substantially parallel to the surface of the battery case 10 where the pole assembly 20 is disposed, that is, the connecting surface 21 is substantially perpendicular to the surface of the battery case 10 where the pole assembly 20 is disposed, so that not only the connection of the bus bar 1 with the pole assembly 20 is facilitated, but also the reliable positioning between the bus bar 1 and the insulating member 30 can be ensured, thereby improving the assembling efficiency of the bus bar 1.

As shown in fig. 3 and 4 in conjunction with fig. 1, the positioning portion 32 is provided on the battery case 10, the surface of the positioning portion 32 in contact with the busbar 1 is parallel to the surface of the battery case 10 provided with the pole assembly 20, and the connecting surface 21 is perpendicular to the surface of the battery case 10 provided with the pole assembly 20, so that one surface of the busbar 1 in contact with the pole assembly 20 and the other surface in contact with the insulator 30 can be made perpendicular.

In one embodiment, as shown in fig. 3 and 4, the pole assembly 20 includes: a terminal 22, at least a portion of the terminal 22 being located outside the battery case 10, an insulator 30 at least partially covering an outer edge of the terminal 22, the terminal 22 including a connection surface 21; and a pole 23, the pole 23 being connected to the terminal 22, at least a part of the pole 23 being located inside the battery case 10. The insulation member 30 covering the outer edge of the terminal 22 can ensure reliable fixation of the pole post assembly 20, while at least a portion of the pole post 23 connected to the terminal 22 is located inside the battery case 10, thereby facilitating the electrical connection of the pole post 23 with the battery cell.

The number of the pole posts 23 can be at least two, and as shown in fig. 3, the number of the pole posts 23 can be two, the two pole posts 23 are arranged on the terminal 22 at intervals, the terminal 22 is provided with a receiving groove 24, and a part of the insulating member 30 is located in the receiving groove 24, so that the insulating member 30 can be used for reliably fixing the terminal 22.

In one embodiment, as shown in fig. 3 and 4, the terminal 22 includes: a support part 221, wherein the support part 221 is arranged on the battery shell 10 through an insulating piece 30, and the pole 23 is connected with the support part 221; a connection portion 222, the connection portion 222 being connected to the support portion 221, the connection portion 222 being provided to the battery case 10 through the insulating member 30, the connection portion 222 including a connection surface 21; the included angle is formed between the supporting portion 221 and the connecting portion 222, the supporting portion 221 can be reliably fixed on the battery case 10, and the included angle is formed between the supporting portion 221 and the connecting portion 222, so that the bus bar 1 can be reliably connected with the connecting portion 222.

It should be noted that an included angle is formed between the supporting portion 221 and the connecting portion 222, that is, an included angle greater than 0 and smaller than 180 degrees is formed between the supporting portion 221 and the connecting portion 222. The supporting portion 221 and the connecting portion 222 may be substantially perpendicular, the insulating member 30 covers the outer edges of the supporting portion 221 and the connecting portion 222, and the positioning portion 32 and the supporting portion 221 are respectively located at two sides of the connecting portion 222, as shown in fig. 3.

In one embodiment, as shown in fig. 3, the battery case 10 includes two opposite first surfaces 11 and four second surfaces 12 disposed around the first surfaces 11, i.e. the battery case 10 has an approximately rectangular structure, the area of the first surface 11 is larger than that of the second surfaces 12, and the pole structure is disposed on the first surface 11. Specifically, the pole assembly 20 is disposed on the first surface 11, and the insulating member 30 is disposed on the first surface 11 and covers the outer edge of the pole assembly 20, so that the pole assembly 20 can be ensured to 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. 1 and 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, utmost point post structure and electrically conductive connecting piece 40, and utmost point post structure is connected with battery housing 10 electricity through electrically conductive connecting piece 40 to can make battery housing 10 can regard as a current potential collection structure of battery, with this convenient subsequent connection. Through setting up electrically conductive connecting piece 40 into first section 41 and second section 42, battery case 10 and utmost point post structure are connected respectively to first section 41 and second section 42, and first section 41 includes elastic component 411, elastic component 411 contacts with battery case 10, not only can guarantee that elastic component 411 and battery case 10 form reliable contact, and elastic component 411 can form the buffering for electrically conductive connecting piece 40 and battery case 10's connection, thereby guarantee that the contact between elastic component 411 and the battery case 10 is more stable, and can increase and resist the very expanded ability of vibrations, with the security performance who improves the group battery.

In one embodiment, the battery pack may include at least two cells, with the buss bar 1 connecting two pole assemblies 20 of two adjacent cells, as shown in fig. 1. The respective cells are arranged in sequence, and further, the first surfaces 11 of the adjacent cells are arranged to face each other so that the stacking direction of the cells is perpendicular to the first surfaces 11.

The busbar 1 is connected with the pole assemblies 20 of two adjacent batteries, the connecting surface 21 of the pole assembly 20 is slightly parallel to the end surfaces of the batteries so as to be connected with the busbar 1, namely the connecting surface 21 can be parallel to one second surface 12 of the battery, so that the busbar 1 and the pole assemblies 20 are conveniently connected, and the space utilization rate is high. The busbar 1 may be of a generally U-shaped configuration to facilitate connection to the two-cell pole assembly 20, as shown in figures 1 and 3.

In one embodiment, the insulator 30 includes: the main body part 31 and the positioning part 32, the bus bar 1 is in limit contact with the positioning part 32, so that the bus bar 1 can be conveniently positioned in the connection process, the bus bar 1 is conveniently connected, the connection efficiency of the bus bar 1 is improved, and the positioning part 32 can improve the connection stability of the insulating part 30 and the battery shell 10. 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.

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 disclosure is limited only by the appended claims.

Claims (13)

1. A battery, comprising:

a battery case (10);

a pole structure disposed in the battery case (10);

electrically conductive connecting piece (40), electrically conductive connecting piece (40) are including first section (41) and second section (42) of electricity connection, first section (41) with second section (42) electricity respectively connect battery housing (10) with utmost point post structure, first section (41) are including elasticity portion (411), elasticity portion (411) with battery housing (10) contact.

2. The battery according to claim 1, wherein the elastic part (411) is a spring plate.

3. The battery of claim 2, wherein the spring is a bent piece;

the elastic sheet is a bending part which is bent outwards, or the elastic sheet is of a U-shaped structure.

4. The battery according to claim 1, wherein an end of the elastic portion facing the battery case (10) is an arc surface.

5. The battery according to claim 4, characterized in that the side of the elastic part facing the second section (42) is formed with a cavity (413).

6. The battery according to claim 1, wherein the conductive connector (40) further comprises a connecting section (43), the connecting section (43) electrically connecting the first section (41) and the second section (42), the first section (41) and the second section (42) being provided separately.

7. Battery according to claim 6, characterized in that it further comprises an insulating sleeve (50), said insulating sleeve (50) being provided at both ends with said first (41) and second (42) segments, respectively, at least part of said connecting segment (43) being located inside said insulating sleeve (50).

8. Battery according to claim 7, characterized in that the insulating sleeve (50) is provided with a perforation (51), at least part of the connecting section (43) being located within the perforation (51), the perforation (51) being located inside the insulating sleeve (50) or the perforation (51) being located at the edge of the insulating sleeve (50).

9. The battery according to claim 8, wherein at least one of opposite ends of the insulating sheath (50) is provided with a relief space (52);

wherein at least one of the first section (41) and the second section (42) is welded to the connecting section (43), and the evacuation space (52) is used for welding evacuation.

10. The battery of claim 7, wherein the post structure comprises:

an insulator (30), the insulator (30) being provided to the battery case (10);

a pole assembly (20), the pole assembly (20) being disposed on the insulator (30) such that the pole assembly (20) is disposed on the battery housing (10) through the insulator (30), the second section (42) being electrically connected with the pole assembly (20);

wherein at least one of the insulating sleeve (50) or the connecting section (43) is in interference fit with the insulator (30).

11. The battery of claim 1, wherein the post structure comprises:

an insulator (30), the insulator (30) being provided to the battery case (10);

a pole assembly (20), the pole assembly (20) being disposed on the insulator (30) such that the pole assembly (20) is disposed on the battery housing (10) through the insulator (30), the second section (42) being electrically connected with the pole assembly (20);

wherein at least part of the first section (41) is located within the insulator (30) or a part of the first section (41) is located within the pole assembly (20).

12. The battery according to claim 1, characterized in that the first segment (41) comprises a first electrical resistance, which is in contact with the battery housing (10);

alternatively, a second resistor (412) is arranged on the first segment (41), and the second resistor (412) is in contact with the battery shell (10).

13. A battery pack characterized by comprising the battery according to any one of claims 1 to 12.

Images