CN216750184U

CN216750184U - Nickel-hydrogen battery package

Info

Publication number: CN216750184U
Application number: CN202220373386.0U
Authority: CN
Inventors: 杨新; 叶旭东; 连梓程; 章刚钢
Original assignee: Wenzhou Shidai Lanpu Electrical Equipment Co ltd
Current assignee: Zhejiang Times Lanpu New Energy Co ltd
Priority date: 2022-02-23
Filing date: 2022-02-23
Publication date: 2022-06-14
Anticipated expiration: 2032-02-23

Abstract

The utility model provides a nickel-metal hydride battery pack which comprises a base, a battery module and a composite bus bar, wherein the composite bus bar comprises a first insulating layer, a first bus bar, a second insulating layer, a second bus bar and a third insulating layer which are sequentially arranged from top to bottom, the first insulating layer is provided with a plurality of first notches suitable for exposing first connecting parts of the first bus bar, the first insulating layer, the second insulating layer and the first bus bar are respectively provided with a plurality of second notches suitable for exposing second connecting parts of the second bus bar, the plurality of first connecting parts and the plurality of second connecting parts are arranged in a staggered mode along the length direction of the composite bus bar and are respectively used for being correspondingly connected with anodes and cathodes of the plurality of battery modules, and a separation block suitable for separating the first connecting parts and the second connecting parts is arranged on the first insulating layer. Because the positive and negative poles of a plurality of battery modules correspond with first busbar and second busbar respectively and link to each other, compare with the mode that a plurality of battery modules of prior art all used the copper bar alone to realize that the electric current gathers, the structure is simpler like this.

Description

Nickel-hydrogen battery package

Technical Field

The utility model relates to the technical field of train storage batteries, in particular to a nickel-metal hydride battery pack.

Background

With the increasing desire of people to protect the global environment, lead-acid storage batteries which are easy to cause environmental pollution are gradually replaced by other batteries. The lithium battery has a disadvantage of poor temperature adaptability although it has a high energy density. A nickel-metal hydride battery (Ni-MH battery) is a high-energy green rechargeable battery, which has the advantages of good wide-temperature performance, high energy density and good safety, and is therefore favored by the market as a substitute for lead-acid storage batteries.

At present, the capacity of a single battery of a nickel-metal hydride battery is small, and in order to meet the requirements of customers on the performance of a battery with large capacity and large current, a plurality of nickel-metal hydride single batteries are generally connected in series and in parallel to form a plurality of battery modules, and then the plurality of battery modules form a nickel-metal hydride battery pack. The collection of electric current is realized to the equal exclusive copper bar of using of a plurality of battery module now, along with energy density's promotion, the increase of battery module, and the copper bar structure is more and more complicated, and occupation space is big, is unfavorable for the miniaturization of battery package.

SUMMERY OF THE UTILITY MODEL

Therefore, the technical problem to be solved by the utility model is to overcome the defects that the copper bar in the prior art is more and more complex in structure, large in occupied space and not beneficial to miniaturization of the battery pack, so that the nickel-metal hydride battery pack is simple in structure and small in occupied space.

Therefore, the utility model provides a nickel-metal hydride battery pack, which comprises a base, a plurality of battery modules and a composite bus bar arranged on the base, the composite bus bar comprises a first insulating layer, a first bus bar, a second insulating layer, a second bus bar and a third insulating layer which are arranged from top to bottom in sequence, the first insulating layer has a plurality of first notches adapted to expose the first connecting portions of the first bus bars, the first insulating layer, the second insulating layer and the first busbar are provided with a plurality of second gaps suitable for exposing second connecting parts of the second busbar, the plurality of first connecting parts and the plurality of second connecting parts are arranged in a staggered mode along the length direction of the composite busbar, and the first insulating layer is provided with separating blocks which are distributed at the edge of the second gap and used for separating the first connecting part from the second connecting part.

The separation blocks are respectively positioned on the upper surface and the lower surface of the first insulating layer.

The two sides of the composite busbar in the width direction are respectively provided with one row of the first connecting parts and the second connecting parts, the battery modules are two groups, each group of the battery modules is multiple, and the battery modules are two groups and are all connected with the composite busbar.

The battery module is arranged between the battery module and the composite busbar, the pressing plate assembly is suitable for pressing and connecting the battery module and the base, and two sides of the pressing plate assembly in the length direction are respectively assembled with the first side plate of the base correspondingly.

The pressing plate assembly comprises a pressing plate and a third buffering piece arranged between the pressing plate and the battery module.

The pressing plate is provided with a heat dissipation cavity, second heat dissipation holes arranged at the bottom of the heat dissipation cavity and third heat dissipation holes arranged at two sides of the width direction of the heat dissipation cavity.

Still including install in the collection module of compound female top of arranging, it is a plurality of the battery module through the temperature sensor who corresponds with collection module links to each other, collection module is equipped with the communication mouth that carries out the CAN communication with the external world.

The composite busbar further comprises a positive pole and a negative pole which are correspondingly connected with the first busbar and the second busbar through soft copper bars, and the poles and the communication ports are respectively arranged on two sides of the base in the length direction.

The outer wall of the first side plate is provided with a lug, and the lug is provided with a wire hanging rod.

The top of the base is provided with a cover plate, and the cover plate is provided with a line clamping piece suitable for limiting the line position.

Two pole pastes indicating the anode and cathode poles are arranged on the cover plate.

The technical scheme of the utility model has the following advantages:

1. the utility model provides a nickel-hydrogen battery pack, wherein a composite bus bar comprises a first insulating layer, a first bus bar, a second insulating layer, a second bus bar and a third insulating layer which are sequentially arranged from top to bottom, the first insulating layer is provided with a plurality of first gaps suitable for exposing first connecting parts of the first bus bar, the first insulating layer, the second insulating layer and the first bus bar are respectively provided with a plurality of second gaps suitable for exposing second connecting parts of the second bus bar, and the plurality of first connecting parts and the plurality of second connecting parts are arranged in a staggered mode along the length direction of the composite bus bar and are respectively used for being correspondingly connected with anodes and cathodes of a plurality of battery modules. Because the positive electrodes and the negative electrodes of the plurality of battery modules are respectively and correspondingly connected with the first bus bar and the second bus bar, compared with the mode that the plurality of battery modules in the prior art realize current collection by independently using copper bars, the structure is simpler; in addition, the insulation layers realize the separation of the first busbar and the second busbar, and the arrangement of the first notch and the second notch ensures that the first connecting part and the second connecting part can be directly exposed, so that the material is saved, the production cost is reduced, the occupied space of the composite busbar is small, and the miniaturization of a product is facilitated; in addition, be equipped with on the first insulating layer distribute in second breach edge, with the separation piece of separating first connecting portion and second connecting portion to increased creepage distance and electric clearance between first connecting portion and the second connecting portion, electric insulation can be higher.

2. According to the nickel-metal hydride battery pack provided by the utility model, the two sides in the width direction of the composite bus bar are respectively provided with the first connecting part and the second connecting part, so that two groups of battery modules can be assembled with the same composite bus bar, the parallel connection of the two groups of battery modules is realized, the structure is simpler, and the production cost is reduced.

3. The pressing plate assembly comprises a pressing plate and a third buffering piece arranged between the pressing plate and the battery module, the pressing plate can limit the battery module to bounce, the third buffering piece can reduce the collision acting force between the battery module and the pressing plate, and the service life of the battery module is prolonged.

4. The utility model provides a nickel-metal hydride battery pack, wherein a pressure plate is provided with a heat dissipation cavity, a second heat dissipation hole arranged at the bottom of the heat dissipation cavity and third heat dissipation holes arranged at two sides of the width direction of the heat dissipation cavity. The heat of the battery module is discharged through the second heat dissipation hole and the third heat dissipation hole in sequence, so that the heat dissipation effect is better, and the third heat dissipation hole arranged on the side edge cannot influence the composite busbar above the pressing plate assembly.

5. According to the nickel-metal hydride battery pack provided by the utility model, the pole and the communication port are respectively arranged on two sides of the length direction of the base, so that the electromagnetic interference of the pole to the communication port is avoided, and the reliability is improved.

6. According to the nickel-metal hydride battery pack provided by the utility model, the outer wall of the first side plate is provided with the lug, the lug is provided with the wire hanging rod, and the wire hanging rod can be used for hanging wires and can also be used as a handle.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a perspective view of a nickel-metal hydride battery pack according to the present invention;

fig. 2 is an exploded view of the nickel-hydrogen battery pack shown in fig. 1;

fig. 3 is a perspective view of the battery module of fig. 1 with the top cover, a portion of the second side cover, and a portion of the battery module removed;

FIG. 4 is a perspective view of the baffle plate assembly;

FIG. 5 is a schematic illustration of an exploded view of the septum assembly of FIG. 4;

FIG. 6 is an assembly schematic of the composite busbar and platen assembly;

FIG. 7 is another perspective view of the composite busbar and the platen assembly rotated through an angle;

fig. 8 is an exploded structure diagram of the composite busbar.

Description of reference numerals: 1. a base; 2. a battery module; 3. a partition plate; 4. a first heat dissipation hole; 5. a reinforcement; 6. a heat dissipation channel; 7. a first buffer member; 8. a base plate; 9. a first side plate; 10. a second buffer member; 11. pressing a plate; 12. a third buffer member; 13. a composite busbar; 14. a second heat dissipation hole; 15. a third heat dissipation hole; 16. a third buffer member; 17. a second side plate; 18. an epoxy board; 19. a first insulating layer; 20. a first bus bar; 21. a second insulating layer; 22. a second bus bar; 23. a third insulating layer; 24. a first connection portion; 25. a first notch; 26. a second connecting portion; 27. a second notch; 28. a separation block; 29. an acquisition module; 30. a communication port; 31. soft copper bars; 32. a pole column; 33. a tab; 34. a wire hanging rod; 35. a cover plate; 36. a wire clip; 37. and (6) pasting the electrode.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features involved in the different embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.

Examples

The present embodiment provides a nickel-metal hydride battery pack, as shown in fig. 1 to 3, including a base 1, a cover plate 35, a plurality of battery modules 2, a separator assembly, a pressing plate assembly, a composite busbar 13, and an acquisition module 29.

Base 1, as shown in fig. 2 and 3, including bottom plate 8, divide and locate the first curb plate 9 of bottom plate 8 length direction both sides to and divide establish with the second curb plate 17 of base 1 width direction both sides, two first curb plates 9, two second curb plates 17 and bottom plate 8 enclose to close and form the installation cavity that is suitable for a plurality of battery module 2 of installation. The inner wall of the first side plate 9 is provided with a second buffer member 10, the outer wall of the first side plate is provided with a tab 33, and the tab 33 is provided with a wire hanging rod 34. An epoxy plate 18 is arranged between the bottom plate 8 and the battery module 2.

The cover plate 35 is arranged on the top of the base 1, and the cover plate 35 is provided with a line fastener 36 suitable for limiting the position of a line and two pole pastes 37 for indicating the positive pole and the negative pole 32.

The battery module 2 has two sets, and each group battery module 2 has 4, and the both sides of baffle subassembly are located to two sets of battery module 2 symmetries.

As a variable embodiment, the number of the battery modules 2 may be 2, 3, 4, or more.

The baffle plate assembly is arranged in the middle of the installation cavity of the base 1, and comprises the following components as shown in figures 4 and 5: the two partition plates 3 are oppositely arranged, and two rows of first heat dissipation holes 4 are formed in the partition plates 3; five reinforcing members 5 which are arranged between the two partition plates 3 and extend along the height direction of the base 1, the reinforcing members 5 and the two partition plates 3 are assembled and fixed by rivets, a heat dissipation channel 6 communicated with the first heat dissipation hole 4 is formed between every two adjacent reinforcing members 5, and each reinforcing member 5 is a metal pipe; and a plurality of first cushions 7 provided between the separators 3 and the battery modules 2 corresponding to the separators 3. In this embodiment, the reinforcement 5 is an aluminum alloy pipe. After the reinforcing pieces 5 and the two clapboards 3 are assembled and fixed, the structural strength of the clapboard assembly can be increased, the requirement of vibration impact is met, the first buffering piece 7 can prevent the battery module 2 from being stressed and over-pressed in the battery module 2, so that the nickel-metal hydride battery pack is high in reliability and long in service life; in addition, at least one row of first heat dissipation holes 4 are formed in the partition plate 3, and a heat dissipation channel 6 communicated with the first heat dissipation holes 4 is formed between every two adjacent reinforcing pieces 5, so that the battery module 2 can be discharged through the first heat dissipation holes 4 and the heat dissipation channel 6 in sequence, and the heat dissipation effect is better.

The pressing plate component is arranged above the battery module 2 and is suitable for pressing and connecting the battery module 2 and the base 1, and two sides of the pressing plate component in the length direction are respectively assembled with the first side plate 9 of the base 1 correspondingly. As shown in fig. 7, the pressing plate assembly includes a pressing plate 11, and a third buffer 12 disposed between the pressing plate 11 and the battery module 2, the pressing plate 11 has a heat dissipation cavity, a second heat dissipation hole 14 disposed at the bottom thereof and communicated with the heat dissipation channel 6, and third heat dissipation holes 15 disposed at both sides of the heat dissipation cavity in the width direction. In this embodiment, two third cushions 16 are disposed on two sides of the second heat dissipation hole 14 in the width direction. Thus, the heat of the battery module 2 is discharged through the heat dissipation channel 6, the second heat dissipation hole 14 and the third heat dissipation hole 15 in sequence, and the heat dissipation effect is better.

The composite busbar 13 is fixed on the top of the pressing plate 11, as shown in fig. 6-8, and includes a first insulating layer 19, a first busbar 20, a second insulating layer 21, a second busbar 22, and a third insulating layer 23, which are sequentially disposed from top to bottom, the first insulating layer 19 has a plurality of first notches 25 adapted to expose first connecting portions 24 of the first busbar 20, the first insulating layer 19, the second insulating layer 21, and the first busbar 20 all have a plurality of second notches 27 adapted to expose second connecting portions 26 of the second busbar 22, the plurality of first connecting portions 24 and the plurality of second connecting portions 26 are staggered along the length direction of the composite busbar 13 and are respectively used for being correspondingly connected with anodes and cathodes of the plurality of battery modules 2, the first insulating layer 19 is provided with separating blocks 28 distributed on the edges of the second notches 27 to separate the first connecting portions 24 from the second connecting portions 26, the separation blocks 28 are respectively located on the upper surface and the lower surface of the first insulating layer 19. . In this embodiment, the both sides of the width direction of the composite busbar 13 are respectively provided with one row of the first connecting portion 24 and the second connecting portion 26, the battery module 2 has two groups, each group the battery module 2 has a plurality of, two groups the battery module 2 all with the composite busbar 13 is connected. The composite busbar 13 further comprises positive and negative poles 32 correspondingly connected with the first busbar 20 and the second busbar 22 through soft copper bars 31, and the poles 32 and the communication ports 30 are respectively arranged on two sides of the base 1 in the length direction. Because the positive electrodes and the negative electrodes of the plurality of battery modules 2 are correspondingly connected with the first bus bar 20 and the second bus bar 22 respectively, compared with the mode that the plurality of battery modules in the prior art realize current collection by using copper bars independently, the structure is simpler; in addition, the insulation layers realize the separation of the first busbar 20 and the second busbar 22, and the arrangement of the first gap 25 and the second gap 27 enables the first connecting part 24 and the second connecting part 26 to be directly exposed, so that the material is saved, the production cost is reduced, the occupied space of the composite busbar is small, and the miniaturization of the product is facilitated; in addition, the first insulating layer 19 is provided with the separating blocks 28 distributed on the edge of the second connecting portion 26 to separate the first connecting portion 24 from the second connecting portion 26, so that the creepage distance and the electric gap between the first connecting portion and the second connecting portion are increased, and the electric insulating property is higher.

Collection module 29 installs in female 13 tops of arranging of compound, and is a plurality of battery module 2 through the temperature sensor who corresponds with collection module 29 links to each other, collection module 29 is equipped with and carries out the communication mouth 30 of CAN communication with the external world. In this embodiment, the temperature sensor is a thermistor.

In this embodiment, the first, second, and

third cushioning members

7, 10, and 16 are made of foamed silicone.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the utility model.

Claims

1. The nickel-metal hydride battery pack is characterized by comprising a base (1), a plurality of battery modules (2) and a composite busbar (13) which are arranged on the base (1), wherein the composite busbar (13) comprises a first insulating layer (19), a first busbar (20), a second insulating layer (21), a second busbar (22) and a third insulating layer (23) which are sequentially arranged from top to bottom, the first insulating layer (19) is provided with a plurality of first notches (25) suitable for exposing first connecting parts (24) of the first busbar (20), the first insulating layer (19), the second insulating layer (21) and the first busbar (20) are respectively provided with a plurality of second notches (27) suitable for exposing second connecting parts (26) of the second busbar (22), and the first connecting parts (24) and the second connecting parts (26) are arranged in a staggered mode along the length direction of the composite busbar (13), and the first insulating layer (19) is provided with separating blocks (28) which are distributed at the edge of the second notch (27) and used for separating the first connecting part (24) from the second connecting part (26).

2. The nickel-hydrogen battery pack according to claim 1, wherein the separation blocks (28) are respectively located on the upper and lower surfaces of the first insulating layer (19).

3. The nickel-metal hydride battery pack according to claim 1, wherein a row of the first connecting portion (24) and a row of the second connecting portion (26) are respectively disposed on two sides of the composite busbar (13) in the width direction, two groups of the battery modules (2) are provided, each group of the battery modules (2) is provided with a plurality of the battery modules, and the two groups of the battery modules (2) are connected with the composite busbar (13).

4. The nickel-metal hydride battery pack according to any one of claims 1-3, further comprising a pressing plate assembly disposed between the battery module (2) and the composite busbar (13) and adapted to press and connect the battery module (2) and the base (1), wherein two sides of the pressing plate assembly in the length direction are respectively assembled with the first side plate (9) of the base (1) correspondingly.

5. The nickel-hydrogen battery pack according to claim 4, wherein the pressure plate assembly includes a pressure plate (11), and a third cushion member (12) provided between the pressure plate (11) and the battery module (2).

6. The nickel-hydrogen battery pack according to claim 5, wherein the pressing plate (11) has a heat dissipation chamber, second heat dissipation holes (14) provided in the bottom thereof, and third heat dissipation holes (15) provided on both sides in the width direction of the heat dissipation chamber.

7. The nickel-metal hydride battery pack as claimed in claim 1, further comprising an acquisition module (29) mounted above the composite busbar (13), wherein the plurality of battery modules (2) are connected with the acquisition module (29) through corresponding temperature sensors, and the acquisition module (29) is provided with a communication port (30) for CAN communication with the outside.

8. The nickel-metal hydride battery pack as claimed in claim 7, wherein the composite busbar (13) further comprises positive and negative poles (32) correspondingly connected to the first busbar (20) and the second busbar (22) through flexible copper bars (31), and the poles (32) and the communication port (30) are respectively disposed on two sides of the base (1) in the length direction.

9. The nickel-hydrogen battery pack according to claim 4, characterized in that the first side plate (9) is provided with a tab (33) on the outer wall, and the tab (33) is provided with a wire hanging rod (34).

10. The nickel-metal hydride battery pack as claimed in claim 1, wherein a cover plate (35) is provided on the top of the base (1), a wire fastener (36) adapted to define a position of a wire is provided on the cover plate (35), and two pole pieces (37) indicating the positive and negative poles (32).