CN214625200U

CN214625200U - Battery cell maintenance module

Info

Publication number: CN214625200U
Application number: CN202022806605.3U
Authority: CN
Inventors: 张健; 陈朝海
Original assignee: Hubei Eve Power Co Ltd
Current assignee: Hubei Eve Power Co Ltd
Priority date: 2020-11-26
Filing date: 2020-11-26
Publication date: 2021-11-05
Anticipated expiration: 2030-11-26

Abstract

The utility model relates to a battery field discloses a module is maintained to electric core, including electric core module, first end plate, second end plate and enhancement adhesive tape, first end plate and second end plate set up respectively in the both ends of electric core module, strengthen the adhesive tape winding cladding and keep away from a side of electric core module and the exposure face of electric core module at first end plate side, second end plate of keeping away from electric core module on. Wherein, strengthen the adhesive tape and include first insulating layer, the cloth layer that excels in, second insulating layer and the first viscose layer that sets gradually from outside to inside. The utility model has the characteristics of simple structure, assembly are simple and low cost, can control the inflation condition of electric core module effectively.

Description

Battery cell maintenance module

Technical Field

The utility model relates to a battery field especially relates to a module is maintained to electric core.

Background

In the new energy automobile industry, the control of the battery cell expansion force is the first key point of module design and is also a big difficulty. The reliability and the safety of the module design are determined by the quality of the battery core expansion control. In the aspect of controlling the expansion force of the battery core, two methods are roughly available: the first is steel belt and end plate type module, and the second is side plate and end plate welding type module.

Referring to fig. 1, a steel belt and end plate module 20 uses a steel belt 210 and an end plate to control cell expansion force, but such a module has many disadvantages. For example, the shape of the steel strip used in such a module is a square frame shape, and the tolerance in the length direction of the steel strip is relatively high in manufacturing, so that the assembly of the steel strip is very difficult in the actual module production. Therefore, a special high-precision tool is needed to be used during assembly to ensure that the steel belt can be installed well, so that the assembly cost is increased. In addition, the limiting structure of the steel belt needs to be added on the module, so that the structure of the module becomes complicated.

Referring to fig. 2, in the side plate and end plate welded module 30, the side plate 310 and the end plate 320 are welded to control the cell expansion force, and the end plate is welded to the side plate to form a whole. The welding methods include laser welding and CMT welding, which have very high requirements on assembly clearance, thereby greatly increasing the process cost. In addition, in the welding mode, a welding heat affected zone exists, and the welding strength is relatively poor, so that the stability is relatively poor.

In summary, the above two modules mainly have the following defects and shortcomings: 1. for the steel belt and the end plate type module, the requirement on the steel belt is high during manufacturing, and the assembly of the steel belt is very difficult. The assembly cost is increased due to the need of using a special high-precision tool during assembly. And the limiting structure of the steel belt needs to be added on the module, so that the structure of the module becomes complicated. 2. For curb plate and end plate welded type module, require very high in the aspect of the fit-up gap to lead to greatly increased processing cost, and welding stability is relatively poor. 3. Both are difficult to maintain, and the maintenance cost is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming the weak point among the prior art, providing a simple structure, assembly and low cost's electric core maintenance module, can control the inflation condition of electric core module effectively.

The purpose of the utility model is realized through the following technical scheme:

the utility model provides a module is maintained to electric core, includes electric core module, first end plate, second end plate and strengthens the adhesive tape, first end plate reaches the second end plate set up respectively in the both ends of electric core module, it is cladding in to strengthen adhesive tape winding first end plate is kept away from the side of electric core module the second end plate is kept away from the side of electric core module and on the exposed face of electric core module.

In one embodiment, the exposed surface of the battery cell module comprises a top surface, a bottom surface and an outer peripheral surface between the top surface and the bottom surface, and the reinforcing adhesive tape is wound and wrapped on the outer peripheral surface.

In one of them embodiment, strengthen the adhesive tape and include first insulating layer, high strength cloth layer, second insulating layer and the first viscose layer that sets gradually from outside to inside.

In one embodiment, the first insulating layer and the second insulating layer are both PET insulating layers, PBT insulating layers, polyarylate insulating layers, PI insulating layers, PC insulating layers, PP insulating layers, PE insulating layers, AS insulating layers, ABS insulating layers, PS insulating layers, PC insulating layers, PA insulating layers, PPO insulating layers, PPs insulating layers, POM insulating layers, POK insulating layers, LCP insulating layers, or any combination thereof.

In one embodiment, the high-strength cloth layer is a glass fiber cloth layer, a carbon fiber cloth layer, a mineral fiber cloth layer, or any combination thereof.

In one embodiment, the first adhesive layer is a silicone structural adhesive, a rubber pressure sensitive adhesive, a resin pressure sensitive adhesive, or any combination thereof.

In one of them embodiment, first viscose layer includes aerogel layer, the cotton layer of bubble and structure glue film, aerogel layer bonds keep away from at the second insulating layer on the side of high strength cloth layer, the cotton layer of bubble bonds and is in the aerogel layer is kept away from on the side of second insulating layer, the structure glue film bonds and is in the cotton layer of bubble is kept away from on the side of aerogel layer.

In one embodiment, the total thickness of the reinforcing tape is 0.2 to 0.8 mm.

In one embodiment, the total thickness of the reinforcing tape is 0.4 to 0.6 mm.

In one embodiment, the reinforcing tape has an overall thickness of 0.5 mm.

In one embodiment, the battery cell module includes a plurality of battery cell monomers and a plurality of second adhesive layers, and two adjacent battery cell monomers are bonded together through the second adhesive layers.

Compared with the prior art, the utility model discloses at least, following advantage has:

1. the utility model has the characteristics of simple structure, simple assembly and low cost, and can effectively control the expansion condition of the cell module; through first insulating layer, the cloth layer that excels in, second insulating layer and first viscose layer for strengthen the adhesive tape and have good waterproof nature, the wearability, the weatherability, electrical insulation, intensity and rigidity, through strengthening adhesive tape winding cladding electricity core module, first end plate and second end plate, make them become a whole, can increase the intensity and the rigidity of whole module, can maintain whole module fast, reduce the maintenance cost, can solve the problem that the electric core module takes place the inflation in charging process.

2. First aerogel layer and the cotton layer light in weight of first bubble, elasticity is big, and has special space mesh structure, and first viscose layer is through their special space mesh structure, can separate the free thermal runaway risk of electric core and absorb the change volume of electric core module in the inflation process to can control the inflation condition of electric core module effectively.

3. When the gross thickness of strengthening the adhesive tape is 0.2 ~ 0.8mm, strengthen the comprehensive properties preferred of adhesive tape, and can not cause harmful effects to electric core module.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

FIG. 1 is a schematic diagram of a steel belt and end plate module.

FIG. 2 is a schematic structural diagram of a side plate and end plate welded module.

Fig. 3 is a schematic structural diagram of a battery cell maintenance module according to an embodiment of the present invention.

Fig. 4 is a schematic structural view of a reinforcing adhesive tape of the cell maintenance module according to an embodiment of the present invention.

Fig. 5 is a schematic structural view of a reinforcing adhesive tape of the battery cell maintenance module according to an embodiment of the present invention.

Detailed Description

In order to facilitate understanding of the present invention, the present invention will be described more fully hereinafter with reference to the accompanying drawings. The preferred embodiments of the present invention are shown in the drawings. The invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

In an embodiment, referring to fig. 3 and 4, a battery cell maintenance module 10 includes a battery cell module 110, a first end plate 120, a second end plate 130, and a reinforcing tape 140, where the first end plate 120 and the second end plate 130 are respectively disposed at two ends of the battery cell module 110, and the reinforcing tape 140 is wound and wrapped on a side surface of the first end plate 120 away from the battery cell module 110, a side surface of the second end plate 130 away from the battery cell module 110, and an exposed surface of the battery cell module 110, so that the first end plate 120, the second end plate 130, and the battery cell module 110 are integrated. It should be noted that the utility model has the characteristics of simple structure, simple assembly and low cost, and can effectively control the expansion condition of the cell module 110; wrap cladding electricity core module 110, first end plate 120 and second end plate 130 through strengthening adhesive tape 140 winding, make them become a whole, can increase the intensity and the rigidity of whole module, can maintain whole module fast, reduce the maintenance cost, can solve electric core module 110 and take place the problem of inflation in the charging process.

For example, referring to fig. 3, the exposed surface of the battery cell module 110 includes a top surface 111, a bottom surface 112, and an outer peripheral surface 113 located between the top surface 111 and the bottom surface 112, and the reinforcing tape 140 is wound around the outer peripheral surface 113. So can increase the intensity and the rigidity of whole module, can solve electric core module 110 and take place the problem of inflation in the charging process.

Further, referring to fig. 5, the reinforcing tape 140 includes a first insulating layer 141, a high-strength fabric layer 142, a second insulating layer 143, and a first adhesive layer 144 sequentially disposed from outside to inside. Thus, the first insulating layer 141, the high-strength fabric layer 142, the second insulating layer 143, and the first adhesive layer 144 make the reinforcing adhesive tape 140 have good waterproof property, wear resistance, weather resistance, electrical insulation property, strength, and rigidity.

Further, the first insulating layer 141 and the second insulating layer 143 are each a PET insulating layer, a PBT insulating layer, a polyarylate insulating layer, a PI insulating layer, a PC insulating layer, a PP insulating layer, a PE insulating layer, an AS insulating layer, an ABS insulating layer, a PS insulating layer, a PC insulating layer, a PA insulating layer, a PPO insulating layer, a PPs insulating layer, a POM insulating layer, a POK insulating layer, an LCP insulating layer, or any combination thereof. Thus, the first insulating layer 141 and the second insulating layer 143 have good water resistance, wear resistance, weather resistance and electrical insulation, so as to improve the water resistance, wear resistance, weather resistance and electrical insulation of the reinforcing tape 140.

Further, the high-strength cloth layer 142 is a glass fiber cloth layer, a carbon fiber cloth layer, a mineral fiber cloth layer, or any combination thereof. Thus, the high-strength fabric layer 142 has good strength, rigidity, impact resistance, heat resistance, weather resistance and electrical insulation, so that the strength, rigidity, impact resistance, heat resistance, weather resistance and electrical insulation of the reinforced adhesive tape 140 are improved.

For example, the first adhesive layer 144 is a silicone adhesive, a rubber pressure sensitive adhesive, a resin pressure sensitive adhesive, or any combination thereof. Thus, the first adhesive layer 144 has the characteristics of high strength, peeling resistance, impact resistance and simple and convenient construction process.

As another example, the first adhesive layer 144 includes a first aerogel layer, a first foam layer and a first structure adhesive layer, the first aerogel layer is bonded to the second insulating layer 143 away from a side of the high-strength fabric layer 142, the first foam layer is bonded to the first aerogel layer away from a side of the second insulating layer 143, and the first structure adhesive layer is bonded to the first foam layer away from a side of the first aerogel layer. For example, the first foam layer may be a PU first foam layer, an anti-static first foam layer, a conductive first foam layer, an EPE first foam layer, an anti-static EPE first foam layer, a CR first foam layer, an EVA first foam layer, a bridging PE first foam layer, an SBR first foam layer, an EPDM first foam layer, or any combination thereof. It should be noted that, first aerogel layer and first bubble cotton layer light in weight, elasticity is big, and has special space mesh structure, and first viscose layer 144 passes through their special space mesh structure, can obstruct electric core monomer 114's thermal runaway risk and absorb the change volume of electric core module 110 in the inflation process to can control electric core module 110's inflation condition effectively.

Generally speaking, the total thickness of the reinforcing tape 140 affects the overall performance of the reinforcing tape 140, and when the total thickness of the reinforcing tape 140 is 0.2-0.8 mm, the overall performance of the reinforcing tape 140 is better, and no adverse effect is caused on the battery cell module 110. Preferably, the total thickness of the reinforcing tape 140 is 0.4 to 0.6 mm. More preferably, the reinforcing tape 140 has a total thickness of 0.5 mm.

Further, referring to fig. 3, the battery cell module 110 includes a plurality of battery cell units 114 and a plurality of second adhesive layers 115, and two adjacent battery cell units 114 are bonded by the second adhesive layers 115.

For example, the second adhesive layer 115 is a silicone structural adhesive, a rubber pressure sensitive adhesive, a resin pressure sensitive adhesive, or any combination thereof. Therefore, the second adhesive layer 115 has the characteristics of high strength, peeling resistance, impact resistance and simple and convenient construction process.

For another example, the second adhesive layer 115 includes a second aerogel layer, a second foam layer, and a second structure adhesive layer, the second aerogel layer is bonded to one of the inner sides of the battery cells 114, the second structure adhesive layer is bonded to another of the inner sides of the battery cells 114, and the second foam layer is bonded to the second aerogel layer and between the second structure adhesive layers. It should be noted that, the second aerogel layer and the second foam layer are light in weight and high in elasticity, and have a special space mesh structure, and the second adhesive layer 115 can block the thermal runaway risk of the cell monomer 114 and absorb the variation of the cell module 110 in the expansion process through the special space mesh structures, so that the expansion condition of the cell module 110 can be effectively controlled.

1. the utility model has the characteristics of simple structure, simple assembly and low cost, and can effectively control the expansion condition of the battery cell module 110; through first insulation layer 141, high strength cloth layer 142, second insulation layer 143 and first viscose layer 144, make it have good waterproof nature to strengthen adhesive tape 140, the wearability, weather resistance, electrical insulation, intensity and rigidity, through strengthening adhesive tape 140 winding cladding electric core module 110, first end plate 120 and second end plate 130, make them become a whole, can increase the intensity and the rigidity of whole module, can maintain whole module fast, reduce the maintenance cost, can solve electric core module 110 and take place the expanded problem in charging process.

2. First aerogel layer and the cotton layer weight of first bubble are light, and elasticity is big, and have special space mesh structure, and first viscose layer 144 can obstruct electric core monomer 114's thermal runaway risk and absorb the change of electric core module 110 in the inflation process through their special space mesh structure to can control electric core module 110's the inflation condition effectively.

3. When the total thickness of reinforcing adhesive tape 140 is 0.2 ~ 0.8mm, reinforcing adhesive tape 140's comprehensive properties preferred, and can not cause harmful effects to electric core module 110.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides a module is maintained to electric core, its characterized in that, includes electric core module, first end plate, second end plate and strengthens the adhesive tape, first end plate reaches the second end plate set up respectively in the both ends of electric core module, it twines the cladding in to strengthen the adhesive tape first end plate is kept away from the side of electric core module the second end plate is kept away from the side of electric core module and on the exposed face of electric core module.

2. The battery cell maintenance module of claim 1, wherein the exposed surface of the battery cell module comprises a top surface, a bottom surface, and an outer peripheral surface located between the top surface and the bottom surface, and the reinforcing tape is wrapped around the outer peripheral surface.

3. The battery cell maintenance module according to claim 1, wherein the reinforcing tape comprises a first insulating layer, a high-strength cloth layer, a second insulating layer and a first adhesive layer, which are sequentially arranged from outside to inside.

4. The cell maintenance module according to claim 3, wherein the first and second insulating layers are PET insulating layers, PBT insulating layers, polyarylate insulating layers, PI insulating layers, PC insulating layers, PP insulating layers, PE insulating layers, AS insulating layers, ABS insulating layers, PS insulating layers, PC insulating layers, PA insulating layers, PPO insulating layers, PPS insulating layers, POM insulating layers, POK insulating layers, LCP insulating layers, or any combination thereof.

5. The battery cell maintenance module of claim 3, wherein the high-strength cloth layer is a glass fiber cloth layer, a carbon fiber cloth layer, or a mineral fiber cloth layer.

6. The cell maintenance module set forth in claim 3, wherein the first adhesive layer is a silicone structural adhesive, a rubber pressure sensitive adhesive, or a resin pressure sensitive adhesive.

7. The battery cell maintenance module according to claim 3, wherein the first adhesive layer comprises an aerogel layer, a foam layer and a structural adhesive layer, the aerogel layer is bonded to a side of the second insulating layer remote from the high-strength cloth layer, the foam layer is bonded to a side of the aerogel layer remote from the second insulating layer, and the structural adhesive layer is bonded to a side of the foam layer remote from the aerogel layer.

8. The battery cell maintenance module according to any one of claims 1 to 7, wherein the total thickness of the reinforcing tapes is 0.2 to 0.8 mm.

9. The battery cell maintenance module set forth in claim 8, wherein the total thickness of the reinforcing tapes is 0.4-0.6 mm.

10. The battery cell maintenance module of claim 1, wherein the battery cell module comprises a plurality of battery cell monomers and a plurality of second adhesive layers, and two adjacent battery cell monomers are bonded together through the second adhesive layers.