Battery, battery assembly and electric equipment

Abstract

The utility model provides a battery, a battery assembly and electric equipment, the battery comprises a pole core, a cover plate assembly and an insulating film, the pole core comprises a first end face, a second end face and a plurality of side faces, the first end face and the second end face are oppositely arranged, and the side faces are connected between the first end face and the second end face; the cover plate assembly is connected with and covers one side surface; the insulating film completely covers the first end face, the second end face and the other side faces, and the insulating film further covers the peripheral side wall of the end, close to the pole core, of the cover plate assembly. The battery, the battery assembly and the electric equipment provided by the utility model are simple in structure, relatively low in manufacturing cost and high in space utilization rate.

Description

Technical Field

[0001] The present application belongs to the field of battery technology, and in particular relates to a battery, a battery assembly and an electrical device. Background Art

[0002] With the advancement of technology, the cost control requirements for batteries are becoming more and more stringent, including reducing the cost of the battery's sealed insulation structure, thereby reducing the overall manufacturing cost of the battery. In the existing battery structure, in order to form an insulation design between the battery's pole core and the battery shell, the battery covers the two ends of the pole core with two spacers, then covers the top of the pole core with a cover plate, and then covers the other surfaces of the pole core with an insulating member to form an insulation design between the pole core and the battery. However, the design of the spacer makes the structure more complicated and more difficult to assemble, which will increase the overall production cost of the battery. In addition, the spacer will occupy the storage space of the battery shell, making the overall space utilization of the battery not high. Utility Model Content

[0003] In order to address the deficiencies in the prior art, the present application provides a battery, a battery assembly and an electrical device with a simple structure, low cost and high space utilization.

[0004] In one aspect, the present application provides a battery, comprising:

[0005] A pole core, comprising a first end face, a second end face and a plurality of side faces arranged opposite to each other, wherein the plurality of side faces are connected between the first end face and the second end face;

[0006] a cover plate assembly connected to and covering one of the side surfaces; and

[0007] The insulating film completely covers the first end surface, the second end surface and the other side surfaces, and the insulating film also covers the peripheral side wall of one end of the cover plate assembly close to the pole core.

[0008] In a possible implementation manner, the insulating film includes a first region, a second region, and a third region connected in sequence;

[0009] The first region is bent relative to the second region, and the first region covers the first end surface;

[0010] The second area covers another of the side surfaces; the second area includes a plurality of sub-areas, each of which covers a corresponding one of the side surfaces;

[0011] The third region is bent relative to the second region, and the third region covers the second end surface.

[0012] In a possible implementation, the thickness of the insulating film is in the range of [0.02, 0.15] mm.

[0013] In a possible implementation manner, the side of the insulating film covering the first end surface, the second end surface and the other side surface is adhesive.

[0014] In a possible implementation, the cover plate assembly includes:

[0015] A cover plate body, covering the fourth side surface;

[0016] a pole, one end of which is located between the cover body and the fourth side surface, and the other end of which passes through the cover body; and

[0017] A pin has one end disposed between the pole and the pole core, and the other end electrically connected to the pole ear of the pole core.

[0018] In a possible implementation manner, the cover plate assembly further includes an insulating member, and the insulating member is disposed between the pin and the pole core.

[0019] In a possible implementation manner, the pin includes a first part, a second part, and a third part connected in sequence;

[0020] The first part is arranged between the pole and the pole core;

[0021] The second portion is arranged to protrude relative to the first portion toward the third side surface;

[0022] The third portion is protruding toward the first side surface relative to the second portion, and the third portion is electrically connected to the pole lug of the pole core.

[0023] In a possible implementation, along a direction from an end of the second part connected to the first part to an end of the second part connected to the third part, a width of the second part in a direction from the first end surface to the second end surface gradually increases.

[0024] In a possible implementation manner, the first portion is embedded in the cover plate body, and a side of the first portion facing away from the pole is flush with a side of the cover plate body facing the pole core.

[0025] On the other hand, the present application provides a battery assembly, comprising:

[0026] The battery mentioned above.

[0027] On the other hand, the present application provides an electrical device, including:

[0028] The battery assembly described above; and

[0029] A load is electrically connected to the battery assembly.

[0030] The battery, battery assembly and electrical equipment provided by the present application completely cover the first end face, the second end face, the first side face, the second side face and the third side face of the pole core through an insulating film, and the cover plate assembly is arranged on the fourth side face, so that the pole core is insulated from the outside. Compared with the existing structure of setting end covers or spacers on the first end face and the second end face, the battery provided by the present application omits the design of end covers or spacers, and directly covers the first end face and the second end face with an insulating film, without using end covers to cover the first end face and the second end face, so that the structure of the battery is simpler and the processing cost of the battery is lower. Moreover, by omitting the design of the end cover, the pole core space utilization rate of the battery is higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some implementation methods provided by the embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0032] Figure 1 A battery assembly structure provided in one embodiment of the present application Figure 1 ;

[0033] Figure 2 A battery assembly structure provided in one embodiment of the present application Figure 2 ;

[0034] Figure 3 It is an assembly diagram of a pole core and a cover plate assembly provided in one embodiment of the present application;

[0035] Figure 4 This is an assembly structure diagram of a cover plate assembly provided in one embodiment of the present application;

[0036] Figure 5 This is a structural diagram of an expanded insulating film provided by an embodiment of the present application;

[0037] Figure 6 This is a structural diagram of a bending insulating film provided by an embodiment of the present application;

[0038] Figure 7 is an exploded view of a cover plate assembly provided in one embodiment of the present application;

[0039] Figure 8 This is a structural diagram of a pin provided in one embodiment of the present application. DETAILED DESCRIPTION

[0040] The technical solution of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described implementation methods are only part of the implementation methods of the present application, rather than all the implementation methods. Based on the implementation methods in the present application, all other implementation methods obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present application.

[0041] The following descriptions of the embodiments are with reference to the attached diagrams to illustrate specific embodiments that the present application can be used to implement. The directional terms mentioned in the description of the present application, such as "upper", "lower", "front", "back", "left", "right", "inner", "outer", "top", "side", "bottom", "top wall", "side wall", "bottom wall", "inner side wall", "outer side wall", "length direction", "width direction", "height direction", etc., are only with reference to the directions of the attached drawings. Therefore, the directional terms used are for better and clearer explanation and understanding of the present application, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In the description of the present application, for example, "first", "second", "third", "fourth", etc., are only used to distinguish the objects described and do not have any order or technical meaning. In the description of the present application, the "connection" and "connection" involved, if not otherwise specified, include direct connection (connection) and indirect connection (connection).

[0042] The present application provides an electric device, which includes a battery assembly and a load. The battery assembly is used to electrically connect to the load and supply power to the load so that the load can work normally. It should be understood that the electric device provided by the present application includes but is not limited to vehicles, industrial equipment, household appliances, office equipment, etc., and the present application does not limit this.

[0043] The present application also provides a battery assembly, which includes a battery, and the number of batteries can be multiple, and multiple batteries are stacked to form a battery assembly. The battery assembly provided in the present application includes but is not limited to components with batteries such as battery modules and battery packs, etc., and the present application does not limit this.

[0044] As users have higher and higher requirements for electrical equipment, the complexity of the battery structure and the production cost of the battery assembly and the battery, which are the main components of the electrical equipment, have a great impact on the complexity of the structure and production cost of the battery assembly and the electrical equipment as a whole. Cost control for the battery includes reducing the cost of the battery sealing insulation structure, thereby reducing the overall manufacturing cost of the battery. In the existing battery structure, in order to form an insulation design between the battery pole core and the battery shell, the battery covers the two ends of the pole core through two spacers, then covers the top of the pole core through a cover plate, and then covers the other surfaces of the pole core through an insulating member, so that the pole core and the battery can form an insulation design. However, through the design of the spacer, the structure is more complicated, the assembly is more difficult, and the overall production cost of the battery will be increased. Moreover, the spacer will occupy the storage space of the battery shell, so that the overall space utilization of the battery is not high. In view of this, the present application provides a battery with a simple structure, low cost and high space utilization, which can make the overall structure of the electrical equipment simple and the production cost low.

[0045] The battery provided in this application is introduced in detail below.

[0046] See also Figures 1 to 4 , Figure 1 A battery assembly structure provided in one embodiment of the present application Figure 1 , Figure 2 This is a battery assembly structure provided by the present application Figure 2 , Figure 3 is an assembly diagram of a pole core and a cover plate assembly provided in one embodiment of the present application, Figure 4 This is an assembly structure diagram of a cover plate assembly provided in one embodiment of the present application.

[0047] The present embodiment provides a battery 100, which includes a pole core 10, a cover plate assembly 30 and an insulating film 50. The pole core 10 is used to form an electric power source of the battery 100. The cover plate assembly 30 is covered on a side surface of one end of the pole core 10. The insulating film 50 is covered on the other side surfaces of the pole core 10 except the end covered by the cover plate assembly 30. The insulating film 50 also overlaps with the peripheral side wall of the cover plate assembly 30 close to the end of the pole core 10, so that the cover plate assembly 30 and the insulating film 50 can completely cover the pole core 10.

[0048] Take the structure of the pole core 10 as a hexahedron as an example. The pole core 10 includes a first end face 11 and a second end face 12 arranged oppositely, and also includes a first side face 13, a second side face 14, a third side face 15 and a fourth side face 16 connected in sequence, and the first side face 13, the second side face 14, the third side face 15 and the fourth side face 16 are all connected between the first end face 11 and the second end face 12. Among them, the first side face 13 and the third side face 15 are arranged oppositely, and the second side face 14 and the fourth side face 16 are arranged oppositely. The cover plate assembly 30 is connected and covered on the fourth side face 16 to insulate the fourth side face 16 of the pole core 10. The insulating film 50 completely covers the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15 of the pole core 10 after bending, so as to insulate the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15 of the pole core 10.

[0049] The battery 100 provided in the present application completely covers the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15 through the insulating film 50, and the cover plate assembly 30 is arranged on the fourth side face 16, so that the pole core 10 is insulated from the outside as a whole. Compared with the existing structure of providing end covers on the first end face 11 and the second end face 12, the design of insulating the first end face 11 and the second end face 12 of the pole core 10 is designed. The battery 100 provided in the present application omits the design of the end cover, directly covers the first end face 11 and the second end face 12 through the insulating film 50, and does not need to use the end cover, so that the structure of the battery 100 is simple and the cost is low. Moreover, by omitting the design of the end cover, the pole core 10 of the battery 100 has a higher space utilization rate, that is, for the battery 100 with the same volume, the pole core 10 of the battery 100 provided in the present application can be designed to be larger, which is conducive to improving the capacity of the battery 100.

[0050] See also Figures 1 to 6 , Figure 5 is a structural diagram of an insulating film provided by the present application. Figure 6 This is a structural diagram of a bent insulating film provided by an embodiment of the present application.

[0051] In a specific embodiment, the insulating film 50 includes a first region 51, a second region 52, and a third region 53 connected in sequence. The first region 51 is bent relative to the second region 52, and the first region 51 completely covers the first end face 11 to insulate the first end face 11 of the pole core 10. The second region 52 covers the other side faces of the pole core 10 except the end covered by the cover plate assembly 30, that is, the second region 52 completely covers the first side face 13, the second side face 14, and the third side face 15 to insulate the first side face 13, the second side face 14, and the third side face 15 of the pole core 10. The third region 53 is bent relative to the second region 52, and the third region 53 completely covers the second end face 12 to insulate the second end face 12 of the pole core 10. The first end face 11 is completely covered by the first region 51, the first side face 13, the second side face 14 and the third side face 15 are completely covered by the second region 52, and the second end face 12 is completely covered by the third region 53, so that the insulating film 50 insulates the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15 of the pole core 10, and the fourth side face 16 of the pole core 10 is insulated by the cover plate assembly 30, so that the pole core 10 of the battery 100 forms a complete insulation structure.

[0052] Further, the second region 52 includes a plurality of sub-regions, and the plurality of sub-regions include a first sub-region 521, a second sub-region 522, and a third sub-region 523 connected in sequence. The first sub-region 521 completely covers the first side surface 13 to insulate the first side surface 13 of the pole core 10. The second sub-region 522 is bent relative to the first sub-region 521, and the second sub-region 522 completely covers the second side surface 14 to insulate the second side surface 14 of the pole core 10. The third sub-region 523 is bent relative to the second sub-region 522, and the third sub-region 523 completely covers the third side surface 15 to insulate the third side surface 15 of the pole core 10. The first sub-region 521 completely covers the first side surface 13, the second sub-region 522 completely covers the second side surface 14, and the third sub-region 523 completely covers the third side surface 15, so that the second region 52 of the insulating film 50 insulates the first side surface 13, the second side surface 14, and the third side surface 15 of the pole core 10.

[0053] See also Figures 1 to 6In a specific embodiment, the thickness range of the insulating film 50 is [0.02, 0.15] mm. Optionally, the thickness of the insulating film 50 can be any value of 0.02 mm, 0.05 mm, 0.08 mm, 0.11 mm, 0.15 mm, etc. Since the insulating film 50 is too thin, the insulating effect of the insulating film 50 on the pole core 10 will be poor, and the insulating film 50 is too thick, which will affect the bending of the insulating film 50 and the overall structural size of the battery 100. By limiting the thickness range of the insulating film 50 to [0.02, 0.15] mm, the influence of the insulating film 50 on the overall size of the battery 100 can be reduced while ensuring the insulating effect of the insulating film 50 on the pole core 10, which is convenient for the miniaturization of the battery 100 and is also conducive to bending the insulating film 50 so that the fit between the insulating film 50 and the pole core 10 is more firm.

[0054] See also Figures 1 to 6 In a specific embodiment, the side of the insulating film 50 covering the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15 is sticky. In other words, the insulating film 50 can be a structure similar to an adhesive tape, and an adhesive layer (not shown) is provided on the insulating film 50, and the adhesive layer is provided on the side where the insulating film 50 is attached to the first end face 11, the second end face 12, the first side face 13, the second side face 14 and the third side face 15. By making the side of the insulating film 50 covering the pole core 10 sticky or having an adhesive layer, the attachment stability of the insulating film 50 to the pole core 10 is better, and the risk of the insulating film 50 falling off the surface of the pole core 10 can be reduced, thereby ensuring the insulation effect of the insulating film 50 on the pole core 10.

[0055] See also Figure 1 , Figure 3 , Figure 7 and Figure 8 , Figure 7 is an exploded view of a cover plate assembly provided in one embodiment of the present application. Figure 8 This is a structural diagram of a pin provided in one embodiment of the present application.

[0056] In a specific embodiment, the cover assembly 30 includes a cover body 31, a pole 32, a pin 33 and an insulating member 34. The cover body 31 is covered on the fourth side 16 of the pole core 10. One end of the pole 32 is located between the cover body 31 and the fourth side 16, and the other end is penetrated by the cover body 31. One end of the pin 33 is arranged between the pole 32 and the pole core 10, and the other end is bent and electrically connected to the pole lug 17 of the pole core 10. The pole core 10 is electrically connected to the pole 32 by the pin 33, and the electric energy in the pole core 10 is then transmitted to the outside of the battery 100 through the pole 32. The insulating member 34 is arranged between one end of the pin 33 close to the pole 32 and the pole core 10. The insulating member 34 is arranged so that the end of the pin 33 connected to the pole 32 is insulated from the pole core 10.

[0057] More specifically, the cover body 31 includes a sealing ring 311, a spacer 312, a light cover 313, an insulating sleeve 314 and a terminal 315. The sealing ring 311 is sleeved on the pole 32, the spacer 312 and the light cover 313 are stacked, and the spacer 312 is in contact with the fourth side surface 16 of the pole core 10. The pole 32 passes through the spacer 312 and the light cover 313, and the sealing ring 311 is located between the side of the spacer 312 away from the light cover 313 and the end of the terminal 315. The insulating sleeve 314 is arranged on the side of the light cover 313 away from the spacer 312, the pole 32 passes through the insulating sleeve 314, and the terminal 315 is electrically connected to one end of the pole 32 passing through the insulating sleeve 314, so that the electric energy of the pole core 10 flows out of the battery 100 through the pin 33, the pole 32 and the terminal 315 in sequence.

[0058] See also Figure 1 , Figure 3 , Figure 7 and Figure 8In a specific embodiment, the pin 33 includes a first portion 331, a second portion 332, and a third portion 333 which are connected in sequence. The first portion 331 is parallel to the spacer 312 of the cover body, and the first portion 331 is stacked between the pole 32 and the fourth side 16 of the pole core 10. The second portion 332 is bent relative to the first portion 331, the second portion 332 is perpendicular to the first portion 331, and the second portion 332 is protruded toward the third side 15. The third portion 333 is bent relative to the second portion 332, the third portion 333 is perpendicular to the first portion 331, the third portion 333 is parallel to the second portion 332, and the third portion 333 is protruded toward the first side 13, and the third portion 333 is electrically connected to the pole ear 17 of the pole core 10. The second part 332 is protruded toward the third side surface 15 of the pole core 10 relative to the first part 331 and the third part 333, so that the second part 332 of the pin 33 can form an avoidance structure for the pole ear 17 of the pole core 10, thereby reducing the interference of the pin 33 on the pole ear 17 of the pole core 10 and reducing the influence of the pin 33 on the dressing area on the pole ear 17 of the pole core 10.

[0059] Furthermore, in the pin 33, the width of the second portion 332 in the direction from the first end face 11 to the second end face 12 gradually increases along the direction from the second portion 332 connecting the first portion 331 to the second portion 332 connecting the third portion 333. By gradually increasing the width of the second portion 332 of the pin 33 from the first portion 331 to the third portion 333, the contact between the pin 33 and the pole ear 17 of the pole core 10 can be further reduced, and the interference between the pin 33 and the pole ear 17 of the pole core 10 at the arc can be reduced, thereby reducing the influence of the pin 33 on the dressing area of ​​the pole ear 17 of the pole core 10.

[0060] See also Figure 1 , Figure 3 , Figure 7 and Figure 8In a specific embodiment, the first part 331 is embedded in the spacer 312 of the cover body 31, and the side of the first part 331 facing away from the pole 32 is flush with the side of the spacer 312 of the cover body 31 facing the pole core 10. By embedding the first part 331 of the pin 33 into the spacer 312 of the cover body, the peripheral side of the first part 331 of the pin 33 can be effectively insulated to prevent the first part 331 of the pin 33 from generating creepage between the first part 331 of the pin 33 and the pole core 10. Moreover, the side of the first part 331 of the pin 33 close to the second part 332 is flush with the side of the spacer 312 of the cover body facing the pole core 10, that is, the side of the first part 331 of the pin 33 close to the second part 332 is on the same plane as the side of the spacer 312 of the cover body facing the pole core 10, so that the insulating member 34 can attach the first part 331 of the pin 33 to the side of the spacer 312 facing the pole core 10, which can reduce the risk of the insulating member 34 falling off.

[0061] The above are some implementation methods of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications are also considered to be within the scope of protection of the present application.

Claims

1. A battery, It is characterized in that include: A pole core, comprising a first end face, a second end face and a plurality of side faces arranged opposite to each other, wherein the plurality of side faces are connected between the first end face and the second end face; A cover plate assembly connected to and covering one of the side surfaces; as well as The insulating film completely covers the first end surface, the second end surface and the other side surfaces, and the insulating film also covers the peripheral side wall of one end of the cover plate assembly close to the pole core.

2. The battery according to claim 1, It is characterized in that The insulating film includes a first region, a second region and a third region connected in sequence; The first region is bent relative to the second region, and the first region covers the first end surface; The second area covers another of the side surfaces; the second area includes a plurality of sub-areas, each of which covers a corresponding one of the side surfaces; The third region is bent relative to the second region, and the third region covers the second end surface.

3. The battery according to claim 1, It is characterized in that The thickness of the insulating film is in the range of [0.02, 0.15] mm.

4. The battery according to claim 1, It is characterized in that The insulating film has adhesiveness on one side covering the first end surface, the second end surface, and the other side surface.

5. The battery according to claim 1, It is characterized in that The cover plate assembly comprises: A cover plate body, which is arranged to cover one of the side surfaces; a pole, one end of which is located between the cover body and one of the side surfaces, and the other end of which passes through the cover body; and A pin has one end disposed between the pole and the pole core, and the other end electrically connected to the pole ear of the pole core.

6. The battery according to claim 5, It is characterized in that The cover plate assembly further includes an insulating member, and the insulating member is disposed between the pin and the pole core.

7. The battery according to claim 5, It is characterized in that The pin comprises a first part, a second part and a third part which are connected in sequence; The first part is arranged between the pole and the pole core; The second portion is arranged to protrude relative to the first portion toward the other side surface; The third portion is arranged to protrude toward one of the side surfaces relative to the second portion, and the third portion is electrically connected to the pole lug of the pole core.

8. The battery according to claim 7, It is characterized in that Along a direction from an end of the second portion connected to the first portion to an end of the second portion connected to the third portion, a width of the second portion in a direction from the first end surface to the second end surface gradually increases.

9. The battery according to claim 7, It is characterized in that The first part is embedded in the cover plate body, and a side of the first part facing away from the pole is flush with a side of the cover plate body facing the pole core.

10. A battery assembly, It is characterized in that include: The battery according to any one of claims 1 to 9.

11. An electrical device, It is characterized in that include: The battery assembly as claimed in claim 10; as well as A load is electrically connected to the battery assembly.

Images