Battery cell module

Abstract

The utility model discloses a battery cell module which comprises a battery cell group, an end plate assembly and a side plate assembly, the end plate assembly comprises a left end plate and a right end plate, the left end plate and the right end plate are respectively and oppositely propped against two side walls of the battery cell group, a left screw joint column is arranged on the left end plate, and a right screw joint column is arranged on the right end plate; the side plate assembly comprises a first side plate and a threaded locking piece, a left connecting hole and a right connecting hole are formed in the first side plate, a left screwing column and a right screwing column correspondingly penetrate through the left connecting hole and the right connecting hole respectively, and the threaded locking piece is connected with the left screwing column and the right screwing column. And the thread locking piece is used for locking the first side plate with the left end plate and the right end plate respectively. Thus, the first side plate, the left end plate and the right end plate can be detachably connected, so that a traditional welding mode can be replaced, the side plates and the end plates are fixed, damage to the battery cell module caused by welding can be avoided, the cost can be reduced, and the universality can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a kind of battery module. BACKGROUND

[0002] In new energy automobile, energy storage system and other portable electronic equipment, battery module as the core component of energy storage, its structural design of pros and cons will directly affect the performance, safety and manufacturing cost of battery.For example, the traditional battery module structure, its shell usually includes side plate and end plate, wherein side plate is usually connected and fixed with end plate by welding, and welding process not only needs strict welding process requirement, but also high temperature in welding process can cause thermal damage to surrounding materials and components, thereby affecting the performance and safety of battery;At the same time, side plate cannot be replaced after welding, so when a battery in battery module needs to be repaired, the whole welding structure usually needs to be damaged, which will lead to increased cost and low universality. SUMMARY

[0003] The utility model aims at overcoming the deficiency in prior art, provide a kind of battery module, to replace the traditional welding mode, realize the connection and fixation of side plate, thereby not only can avoid the damage of welding to battery module, but also can reduce cost and improve universality.

[0004] The utility model aims at overcoming the deficiency in prior art, provide a kind of battery module, to replace the traditional welding mode, realize the connection and fixation of side plate, thereby not only can avoid the damage of welding to battery module, but also can reduce cost and improve universality.

[0005] A kind of battery module, including: battery group, end plate assembly and side plate assembly, the end plate assembly includes left end plate and right end plate, the left end plate and the right end plate are respectively opposite and hold on the two side walls of the battery group, left threaded column is provided on the left end plate, and right threaded column is provided on the right end plate;The side plate assembly includes first side plate and threaded locking piece, left connecting hole and right connecting hole are respectively set up on the first side plate, the left threaded column and the right threaded column are respectively correspondingly threaded on the left connecting hole and the right connecting hole, the threaded locking piece is connected with the left threaded column and the right threaded column, and the threaded locking piece is used to make the first side plate respectively with the left end plate and the right end plate form locking.

[0006] In one embodiment, the threaded locking piece includes two locking nuts, two locking nuts are respectively connected with the left threaded column and the right threaded column in screw thread, so that the first side plate is respectively locked with the left end plate and the right end plate.

[0007] In one embodiment, the left end plate is respectively provided with bending protruding portion at both ends, left limiting slot is formed between the bending protruding portion at both ends, and the battery group is located in the left limiting slot.

[0008] In one of the embodiments, one end of the left threaded column is arranged on the bending protrusion, and the other end of the left threaded column extends towards the first side plate, so that the other end of the left threaded column is arranged on the left connecting hole.

[0009] In one of the embodiments, a binding belt is further arranged on the side of the end plate assembly away from the battery cell group, so that the end plate assembly clamps and fixes the battery cell group.

[0010] In one of the embodiments, a limiting boss is arranged on the left end plate, and a positioning groove is formed between the limiting boss and the left threaded column, and the binding belt is arranged in the positioning groove.

[0011] In one of the embodiments, two left threaded columns are arranged on the left end plate, and the limiting boss is arranged between the two left threaded columns, and the positioning groove is formed between the limiting boss and any one of the left threaded columns.

[0012] In one of the embodiments, the structure of the right end plate is the same as that of the left end plate.

[0013] In one of the embodiments, a mounting protrusion is arranged on the first side plate, and a mounting hole is arranged on the mounting protrusion.

[0014] In one of the embodiments, an insulating sheet is arranged between the battery cell group and the end plate assembly.

[0015] Compared with the prior art, the utility model has at least the following advantages:

[0016] The battery cell module clamps and limits the battery cell group through the left end plate and the right end plate, and the left threaded column and the right threaded column are arranged on the left end plate and the right end plate respectively, and the left connecting hole and the right connecting hole are arranged on the first side plate, so that the left threaded column and the right threaded column are arranged on the left connecting hole and the right connecting hole respectively, the limiting and fixing between the left end plate, the right end plate and the first side plate are realized, and the first side plate, the left end plate and the right end plate are connected through the threaded fastener and the left threaded column and the right threaded column, so that the locking between the first side plate, the left end plate and the right end plate is realized. Since the threaded connection is adopted, the detachable connection between the first side plate, the left end plate and the right end plate can be realized, so that the traditional welding mode can be replaced, the connection and fixing of the side plate and the end plate are realized, and then not only the damage of the battery cell module caused by welding can be avoided, but also the cost can be reduced and the universality can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical scheme of the embodiments of the utility model, the drawings needed in the embodiments will be briefly introduced.

[0018] Figure 1 This is a schematic diagram of the battery cell module in one embodiment of the present invention;

[0019] Figure 2 for Figure 1 A schematic diagram of the disassembled endplate assembly of the battery cell module;

[0020] Figure 3 for Figure 1 A schematic diagram of the structure of the left end plate of the battery cell module. Detailed Implementation

[0021] To facilitate understanding of this utility model, a more comprehensive description of this utility model will be given below with reference to the accompanying drawings.

[0022] Please see Figure 1 , Figure 2 and Figure 3 As shown, a battery cell module 10 includes: a battery cell assembly 100, an end plate assembly 200, and a side plate assembly 300; the end plate assembly 200 includes a left end plate 210 and a right end plate 220, which are respectively supported against the two side walls of the battery cell assembly 100. A left screw post 211 is provided on the left end plate 210, and a right screw post 221 is provided on the right end plate 220; the side plate assembly 300 includes a first side plate 310 and a threaded fastener 320. A left connecting hole and a right connecting hole are respectively provided on the first side plate 310. The left screw post 211 and the right screw post 221 are respectively passed through the left connecting hole and the right connecting hole. The threaded fastener 320 is connected to the left screw post 211 and the right screw post 221 respectively, and the threaded fastener 320 is used to lock the first side plate 310 to the left end plate 210 and the right end plate 220 respectively.

[0023] It should be noted that the battery cell group 100 is formed by stacking a plurality of single battery cells, so the stacked single battery cells need to be clamped and limited by the end plate assembly 200 and the side plate assembly 300. Specifically, first, the left and right ends of the battery cell group 100 are clamped and limited by the left end plate 210 and the right end plate 220, and then the left end plate 210 and the right end plate 220 are locked and fixed by the side plate assembly 300. In order to replace the traditional welding method and achieve detachable connection of the side plate assembly 300, the left threaded column 211 is arranged on the left end plate 210, the right threaded column 221 is arranged on the right end plate 220, and the left connecting hole and the right connecting hole corresponding to the positions of the left threaded column 211 and the right threaded column 221 are respectively formed on the first side plate 310, so that the left threaded column 211 is arranged in the left connecting hole to achieve the connection and limitation of the left end plate 210 and the first side plate 310, and the right threaded column 221 is arranged in the right connecting hole to achieve the connection and limitation of the right end plate 220 and the first side plate 310. Then, the left threaded column 211 and the right threaded column 221 are connected by the threaded fastener 320, so as to achieve the locking and fixing of the first side plate 310, the left end plate 210 and the right end plate 220, wherein the left threaded column 211 and the right threaded column 221 are provided with threaded structures. Since the end plate assembly 200 and the side plate assembly 300 are connected and fixed in a threaded connection mode, the detachable connection of the side plate assembly 300 can be achieved, so that the traditional welding method can be replaced to fix the side plate and the end plate, thereby not only avoiding damage to the battery cell module 10 caused by welding, but also facilitating maintenance, reducing cost and improving universality. In this embodiment, in order to further improve the locking and fixing of the left end plate 210 and the right end plate 220, and further ensure the clamping and limitation of the left end plate 210 and the right end plate 220 to the battery cell group 100, the side plate assembly 300 further comprises a second side plate 330, the first side plate 310 and the second side plate 330 are arranged opposite to each other, the left connecting hole and the right connecting hole are also formed on the second side plate 330, and the left threaded column 211 and the right threaded column 221 corresponding to the left connecting hole and the right connecting hole on the second side plate 330 are also arranged on the left end plate 210 and the right end plate 220 respectively, and the locking and fixing of the second side plate 330, the left end plate 210 and the right end plate 220 are achieved by the threaded fastener 320. In this way, the locking and fixing of the left end plate 210 and the right end plate 220 are achieved by the first side plate 310 and the second side plate 330, and the clamping stability of the left end plate 210 and the right end plate 220 to the battery cell group 100 can be further improved.

[0024] For reference Figure 1As shown, in an embodiment, the threaded fastener 320 includes two fastening nuts, which are respectively threaded with the left threaded column 211 and the right threaded column 221, so as to form fastening of the first side plate 310 with the left end plate 210 and the right end plate 220. That is, when assembling the side plate assembly 300 and the end plate assembly 200, the left threaded column 211 on the left end plate 210 is passed through the left connecting hole of the first side plate 310, and then is threaded with the fastening nut and the left threaded column 211, so as to realize the locking and fixing of the left end plate 210 and the first side plate 310. Similarly, the right threaded column 221 on the right end plate 220 is passed through the right connecting hole of the first side plate 310, and then is threaded with the fastening nut and the right threaded column 221, so as to realize the locking and fixing of the right end plate 220 and the first side plate 310. In this way, since each component is connected by threading, the detachable connection of the side plate assembly 300 can be realized. In another embodiment, when the side plate assembly 300 includes the first side plate 310 and the second side plate 330, that is, when there are two side plates, the corresponding fastening nuts are provided with at least four.

[0025] As shown in Figure 2 and Figure 3 As shown, the left end plate 210 is provided with a bent protruding portion 212 at each end, and a left limiting groove 213 is formed between the two bent protruding portions 212, and the battery cell group 100 is located in the left limiting groove 213. In this way, the two sides of the battery cell group 100 can be limited by the left limiting groove 213. At the same time, the bent protruding portion 212 is provided on the left end plate 210, so that the bent protruding portion 212 can extend to the side plate assembly 300, thereby facilitating the connection and assembly of the side plate assembly 300 and the end plate assembly 200. For example, in the present embodiment, one end of the left threaded column 211 is provided on the bent protruding portion 212, and the other end of the left threaded column 211 extends towards the first side plate 310, so that the other end of the left threaded column 211 is passed through the left connecting hole. In this way, the connection and assembly of the end plate assembly 200 and the side plate assembly 300 can be more convenient.

[0026] As shown in Figure 2 In an embodiment, the battery cell module 10 further includes a binding belt 400, which is bound on the side of the end plate assembly 200 away from the battery cell group 100, so as to clamp and fix the battery cell group 100 by the end plate assembly 200. That is, when assembling the battery cell module 10, the end plate assembly 200 can be first bound and fixed by the binding belt 400, so as to ensure that the battery cell group 100 and other components can be fixed together, thereby further ensuring the stability of the battery cell group 100 and other components, and avoiding relative displacement of single battery cells or other components during use.

[0027] As shown in Figure 2 and Figure 3As shown, the left end plate 210 is provided with a limiting boss 214, and the limiting boss 214 and the left threaded column 211 form a positioning groove 215, and the binding band 400 is located in the positioning groove 215. In this way, the binding band 400 is limited by the positioning groove 215, which can avoid the position deviation of the binding band 400.

[0028] In an embodiment, the left threaded column 211 on the left end plate 210 is provided with two, and the limiting boss 214 is arranged between the two left threaded columns 211, and the limiting boss 214 and any one of the left threaded columns 211 form a positioning groove 215. Correspondingly, the binding band 400 can be provided with two, and the two binding bands 400 are respectively located in the two positioning grooves 215, so that the stability of the battery cell group 100 and other components can be further ensured, and the position deviation of the battery cell group 100 and other components can be avoided. In this embodiment, the first side plate 310 is also provided with a limiting groove at the position corresponding to the limiting boss 214, and when the first side plate 310 is assembled with the left end plate 210, the limiting boss 214 is accommodated in the limiting groove, so that the accuracy of the connection position of the first side plate 310 and the left end plate 210 can be further ensured, and the position deviation of the first side plate 310 or the left end plate 210 can be avoided.

[0029] In an embodiment, the structure of the right end plate 220 is the same as that of the left end plate 210. In this way, the batch production of the end plate can be realized, and the overall structure design and manufacturing process can be simplified, thereby reducing the cost.

[0030] Please refer to Figure 1 As shown, in an embodiment, the first side plate 310 is provided with a mounting protrusion 311, and the mounting protrusion 311 is provided with a mounting hole 311a. In this way, the battery cell module 10 can be conveniently mounted and fixed to other components or devices, for example, a threaded fastener such as a bolt or a screw is used to realize the mounting and fixation of the battery cell module. At the same time, since the battery cell module 10 is mainly mounted to other components or devices by the side plate assembly 300, the side plate assembly 300 and the end plate assembly 200 are assembled by the threaded connection, thereby realizing the detachable connection of the side plate assembly 300, so that the battery cell module 10 can replace the side plate assembly 300 with different configurations according to different installation and application scenarios, thereby improving the versatility of the battery cell module 10.

[0031] In an embodiment, an insulating sheet 500 is arranged between the battery cell group 100 and the end plate assembly 200. The battery cell group 100 and the end plate assembly 200 are separated by the insulating sheet 500, thereby realizing the insulation protection of the battery cell group 100 and improving the safety of the battery cell group 100. For example, the insulating sheet 500 can be made of insulating materials such as polyimide, polyethylene, and polytetrafluoroethylene.

[0032] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several modifications and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. An electric cell module, characterized by comprising: It comprises: a battery cell group; an end plate assembly, which comprises a left end plate and a right end plate, the left end plate and the right end plate are respectively abutted on the two side walls of the battery cell group, the left end plate is provided with a left threaded column, and the right end plate is provided with a right threaded column; and a side plate assembly, which comprises a first side plate and a threaded locking piece, the first side plate is respectively provided with a left connecting hole and a right connecting hole, the left threaded column and the right threaded column are respectively correspondingly arranged in the left connecting hole and the right connecting hole, and the threaded locking piece is connected with the left threaded column and the right threaded column, so as to lock the first side plate with the left end plate and the right end plate.

2. The battery cell module of claim 1, wherein, The threaded locking piece comprises two locking nuts, which are respectively threadedly connected with the left threaded column and the right threaded column, so as to lock the first side plate with the left end plate and the right end plate.

3. The battery cell module of claim 1, wherein, The left end plate is respectively provided with a bending protrusion at both ends, and a left limiting groove is formed between the two bending protrusions, and the battery cell group is located in the left limiting groove.

4. The battery cell module of claim 3, wherein, One end of the left threaded column is arranged on the bending protrusion, and the other end of the left threaded column extends towards the first side plate, so that the other end of the left threaded column is arranged in the left connecting hole.

5. The battery cell module of any of claims 1-4, wherein, It further comprises a binding belt, which is bound on the side of the end plate assembly away from the battery cell group, so that the end plate assembly clamps and fixes the battery cell group.

6. The battery cell module of claim 5, wherein, The left end plate is provided with a limiting boss, and a positioning groove is formed between the limiting boss and the left threaded column, and the binding belt is located in the positioning groove.

7. The battery cell module of claim 6, wherein, The left end plate is provided with two left threaded columns, and the limiting boss is arranged between the two left threaded columns, and the limiting boss and any one of the left threaded columns form the positioning groove.

8. The battery cell module of claim 7, wherein, The structure of the right end plate is the same as that of the left end plate.

9. The battery cell module of any of claims 1-4, wherein, The first side plate is provided with a mounting protrusion, and the mounting protrusion is provided with a mounting hole.

10. The battery cell module of any one of claims 1-4, wherein, An insulating sheet is arranged between the battery cell group and the end plate assembly.

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