Battery module assembly mechanism and battery pack

Abstract

The present disclosure provides an assembly mechanism for a battery module and a battery pack. The assembly mechanism for a battery module includes a base, a fixing assembly and an upper shell. The base is formed with a bearing groove. The fixing assembly includes a band, a bracket and a locking piece. Two positioning protrusions are respectively provided at the two ends of the band at the top of the battery module. Two connecting protrusions are respectively provided on both sides of the bracket. Each connecting protrusion is connected to the corresponding positioning protrusion. The bracket is provided with a fixing stud, and the fixing stud is formed with a screw hole. The upper shell is formed with a cover cavity, and a through hole is formed on the bottom wall of the cover cavity. The locking piece is passed through the through hole and is screwed with the inner wall of the screw hole. By setting the fixing assembly, the battery module is fixed to the upper shell, so that the upper shell and the base jointly bear the weight of the battery module, reducing the force concentration at the connection between the base and the upper shell, thereby avoiding the risk of rupture at the connection between the base and the upper shell, thereby preventing the risk of water ingress to the battery module, and improving the safety of the battery module.

Description

Technical Field

[0001] The present disclosure relates to the technical field of batteries, and in particular to an assembly mechanism for a battery module and a battery pack. Background Art

[0002] With the rapid development of lithium battery technology, the assembly of battery modules has attracted more and more attention from major manufacturers.

[0003] In the prior art, a battery module is usually assembled using an upper cover, an aluminum shell and a lower cover. For example, a Chinese patent with announcement number CN217544790U proposes a battery module fixing structure, which is assembled by contacting the four sides of the battery module with the inner wall of the aluminum shell, and locking the handle (equivalent to the upper cover) and the base (equivalent to the lower cover) to the aluminum shell by screws, thereby completing the assembly of the battery module.

[0004] The technical solution of the above patent can better realize the firm assembly of the battery module, but it also has the following problems:

[0005] During the transportation of batteries, the battery module is located in the aluminum shell. At this time, the base bears the weight of the entire battery module. However, the base is fixed on the aluminum shell by locking screws, resulting in the risk of rupture at the connection between the base and the aluminum shell due to concentrated force, making the battery module prone to water ingress and reducing the safety of the battery module. Utility Model Content

[0006] The purpose of the present disclosure is to overcome the deficiencies in the prior art and to provide an assembly mechanism and a battery pack for a battery module, which fixes the battery module to the upper shell so that the upper shell and the base jointly bear the weight of the battery module, thereby reducing the force concentration at the connection between the base and the upper shell, thereby avoiding the risk of rupture at the connection between the base and the upper shell, and further preventing the risk of water intrusion into the battery module.

[0007] The purpose of this disclosure is achieved through the following technical solutions:

[0008] 4. The repairing kit for automotive dents, according to claim 1, wherein the foot is equipped with a toothed bracket, and the toothed bracket has a first end and a second end, and the second end is connected to the toothed bracket by a toothed bracket. The toothed bracket has a first end and a second end, and the toothed bracket has a second end. The toothed bracket has a first end and a second end, and the toothed bracket has a second end.

[0009] In one embodiment, the fixing assembly also includes a plurality of fixing screws, the outer peripheral wall of the bearing groove is formed with a plurality of first through holes, the outer peripheral wall of the cover cavity is formed with a plurality of fixing holes, the plurality of fixing holes are arranged one by one corresponding to the plurality of first through holes, each of the fixing screws is passed through the corresponding first through hole and is threadedly connected to the inner wall of the corresponding fixing hole.

[0010] In one embodiment, the assembly mechanism for the battery module also includes a waterproof ring, a plurality of second through holes are formed on the periphery of the waterproof ring, and the waterproof ring is abutted against the outer peripheral wall of the supporting groove so that the plurality of second through holes are arranged one by one corresponding to the plurality of first through holes, and each of the fixing screws is sequentially passed through the corresponding first through hole and the corresponding second through hole, and is threadedly connected to the inner wall of the corresponding fixing hole.

[0011] In one embodiment, the assembly mechanism for the battery module also includes a buffer component, which includes a first buffer pad and a second buffer pad, the first buffer pad is attached to the bottom wall of the supporting groove, and the first buffer pad abuts against the bottom end of the battery module, the second buffer pad is attached to the side of the bracket away from the battery module, and the second buffer pad abuts against the inner wall of the covering cavity.

[0012] In one embodiment, the first buffer pad and the second buffer pad are both rubber pads.

[0013] In one embodiment, each of the connecting protrusions is detachably connected to the corresponding positioning protrusion.

[0014] In one embodiment, the fixing assembly also includes two fastening screws, each of the positioning protrusions is formed with a first through hole, each of the connecting protrusions is formed with a second through hole, and each of the connecting protrusions is provided with a fastening nut, each of the second through holes is connected to the inner cavity of the corresponding fastening nut, and each of the fastening screws is sequentially passed through the corresponding first through hole and the corresponding second through hole, and is threadedly connected to the inner wall of the corresponding fastening nut.

[0015] In one of the embodiments, the assembly mechanism for the battery module also includes waterproof glue, the bottom wall of the cover cavity is formed with a sinker connected to the through hole, the locking piece is sequentially passed through the sinker and the through hole, and is screwed to the inner wall of the screw hole, and the locking end of the locking piece is in contact with the bottom wall of the sinker, and the waterproof glue is filled in the sinker to seal the sinker.

[0016] In one embodiment, the battery module assembly mechanism also includes a sticker, the outer wall of the upper shell is formed with a sticking groove, the sticking groove is connected to the sink, and the sticker is bonded to the inner wall of the sticking groove to limit the waterproof glue to be contained in the sink.

[0017] A battery pack includes a battery module and an assembly mechanism for the battery module as described in any of the above embodiments.

[0018] Compared with the prior art, the present invention has at least the following advantages:

[0019] By setting up the fixing components, the battery module is fixed to the upper shell, so that the upper shell and the base jointly bear the weight of the battery module, eliminating the assembly method in the prior art in which only the base bears the weight of the battery module, reducing the force concentration at the connection between the base and the upper shell, thereby avoiding the risk of rupture at the connection between the base and the upper shell, and further preventing the risk of water intrusion into the battery module, thereby improving the safety of the battery module. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the present disclosure, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present disclosure and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 A schematic diagram of the structure of an assembly mechanism for a battery module in one embodiment;

[0022] Figure 2 for Figure 1 An exploded view of an assembly mechanism for a battery module is shown;

[0023] Figure 3 for Figure 2 A schematic diagram of the structure of the upper shell in the assembly mechanism for the battery module shown;

[0024] Figure 4 for Figure 3 Another structural schematic diagram of the upper shell shown;

[0025] Figure 5 A schematic diagram of the connection of a band, a bracket and a battery module in one embodiment;

[0026] Figure 6 for Figure 2 The schematic diagram of the structure of the strap in the assembly mechanism for the battery module is shown. DETAILED DESCRIPTION

[0027] In order to facilitate the understanding of the present disclosure, the present disclosure will be described more fully below with reference to the relevant drawings. The preferred embodiments of the present disclosure are given in the drawings. However, the present disclosure can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present disclosure more thoroughly and comprehensively understood.

[0028] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0029] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present disclosure. The terms used herein in the specification of the present disclosure are only for the purpose of describing specific embodiments and are not intended to limit the present disclosure. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0030] The present invention provides an assembly mechanism for a battery module, comprising a base, a fixing assembly and an upper shell, the base being formed with a bearing slot, the bearing slot being used to bear the battery module; the fixing assembly comprising a band, a bracket and a locking piece, the band being used to bundle the battery module, and two positioning protrusions are respectively provided at the top end of the battery module at both ends of the band, the bracket is arranged at the top end of the battery module, and two connecting protrusions are respectively provided on both sides of the bracket, the two connecting protrusions are arranged in a one-to-one correspondence with the two positioning protrusions, each of the connecting protrusions is connected to the corresponding positioning protrusion, a fixing stud is provided on a side of the bracket away from the battery module, and a screw hole is formed on the fixing stud; the upper shell is formed with a covering cavity, the upper shell cover is connected to the base so that the covering cavity is used to cover the battery module, a through hole is further formed on the bottom wall of the covering cavity, the through hole is correspondingly connected to the screw hole, the locking piece is passed through the through hole and is screwed with the inner wall of the screw hole.

[0031] In order to better understand the technical solutions and beneficial effects of the present invention, the present invention is further described in detail below in conjunction with specific embodiments:

[0032] See also Figures 1 to 6 , which is a battery module assembly mechanism 10 according to an embodiment of the utility model, including a base 100, a fixing assembly 200 and an upper shell 300, wherein the base 100 is formed with a bearing groove 101, and the bearing groove 101 is used to bear the battery module 20; the fixing assembly 200 includes a band 210, a bracket 220 and a locking member 230, wherein the band 210 is used to bundle the battery module 20, and two ends of the band 210 are respectively provided with two positioning protrusions 212 at the top of the battery module 20, the bracket 220 is provided at the top of the battery module 20, and two connecting protrusions 222 are respectively provided on both sides of the bracket 220, and the two connecting protrusions 222 are connected to the two The positioning protrusions 212 are arranged in a one-to-one correspondence, and each connecting protrusion 222 is connected to the corresponding positioning protrusion 212. A fixing stud 224 is provided on the side of the bracket 220 away from the battery module 20, and the fixing stud 224 is formed with a screw hole 2241; the upper shell 300 is formed with a cover cavity 301, and the upper shell 300 is covered and connected to the base 100 so that the cover cavity 301 is used to cover the battery module 20. The bottom wall of the cover cavity 301 is also formed with a through hole 302, and the through hole 302 is correspondingly connected to the screw hole 2241. The locking piece 230 is passed through the through hole 302 and is screwed to the inner wall of the screw hole 2241.

[0033] In this embodiment, the battery module 20 is firstly bundled with the band 210. Since two ends of the band 210 are respectively provided with two positioning protrusions 212 at the top of the battery module 20, the bracket 220 is arranged at the top of the battery module 20, and two connecting protrusions 222 are respectively provided on both sides of the bracket 220. Each connecting protrusion 222 is connected to the corresponding positioning protrusion 212, so that the band 210 and the bracket 220 are firmly connected; then the battery module 20 is placed in the bearing groove 101 of the base 100, and then the upper shell 300 is covered and connected to the base 100, so that the cover cavity 301 is connected with the bearing groove 101, and the cover cavity 301 is used to cover the battery module 20, and since the side of the bracket 220 away from the battery module 20 is provided with a fixing stud 224, the fixing stud 224 is formed with a screw Hole 2241, the bottom wall of the cover cavity 301 is formed with a through hole 302 corresponding to the screw hole 2241, and the locking piece 230 is passed through the through hole 302 and screwed with the inner wall of the screw hole 2241, so that the bracket 220 is firmly connected to the upper shell 300; in this way, through the setting of the fixing component 200, the battery module 20 is fixed to the upper shell 300, so that the upper shell 300 and the base 100 jointly bear the weight of the battery module 20, and the assembly method in the prior art in which only the base 100 bears the weight of the battery module 20 is cancelled, and the force concentration at the connection between the base 100 and the upper shell 300 is reduced, thereby avoiding the risk of rupture at the connection between the base 100 and the upper shell 300, thereby preventing the risk of water ingress into the battery module 20, and improving the safety of the battery module 20.

[0034] In one embodiment, see Figure 2 and Figure 4 The fixing assembly 200 further includes a plurality of fixing screws 240, a plurality of first through holes 102 are formed on the outer peripheral wall of the bearing slot 101, a plurality of fixing holes 303 are formed on the outer peripheral wall of the housing cavity 301, the plurality of fixing holes 303 are arranged in one-to-one correspondence with the plurality of first through holes 102, each of the fixing screws 240 is passed through the corresponding first through hole 102, and is screwed with the inner wall of the corresponding fixing hole 303. In this embodiment, by passing each fixing screw 240 through the corresponding first through hole 102, and screwing with the inner wall of the corresponding fixing hole 303, the upper shell 300 is covered and connected to the base 100.

[0035] In one embodiment, see Figure 2 and Figure 4The battery module assembly mechanism 10 further includes a waterproof ring 400, and a plurality of second through holes 401 are formed on the periphery of the waterproof ring 400. The waterproof ring 400 is disposed in contact with the outer peripheral wall of the bearing groove 101, so that the plurality of second through holes 401 are disposed in one-to-one correspondence with the plurality of first through holes 102. Each of the fixing screws 240 is sequentially passed through the corresponding first through hole 102 and the corresponding second through hole 401, and is screwed with the inner wall of the corresponding fixing hole 303. In this embodiment, the risk of water ingress at the connection between the upper shell 300 and the base 100 is avoided by the provision of the waterproof ring 400, so as to ensure that the waterproof performance of the battery module assembly mechanism 10 is good, and the use safety of the battery module 20 is improved.

[0036] In one embodiment, see Figure 2 The battery module assembly mechanism 10 further includes a buffer assembly 500, the buffer assembly 500 includes a first buffer pad 510 and a second buffer pad 520, the first buffer pad 510 is attached to the bottom wall of the bearing groove 101, and the first buffer pad 510 abuts against the bottom end of the battery module 20, the second buffer pad 520 is attached to the side of the bracket 220 away from the battery module 20, and the second buffer pad 520 abuts against the inner wall of the cover cavity 301. In this embodiment, the buffer assembly 500 includes the first buffer pad 510 and the second buffer pad 520, and the first buffer pad 510 is disposed on the bottom wall of the bearing groove 101 to provide a buffering effect between the battery module 20 and the base 100, and the second buffer pad 520 is disposed on the side of the bracket 220 away from the battery module 20 to avoid the bracket 220 and the inner wall of the cover cavity 301 from scratching.

[0037] In one embodiment, the first buffer pad and the second buffer pad are both rubber pads, so as to ensure a better buffering effect of the buffer assembly.

[0038] In one embodiment, see Figure 5 Each of the connecting protrusions 222 is detachably connected to the corresponding positioning protrusion 212. In this way, it is convenient to repair and replace the band 210 and the bracket 220 in time.

[0039] In one embodiment, see Figure 5 and Figure 6The fixing assembly 200 further includes two fastening screws 250. Each positioning protrusion 212 is formed with a first through hole 2121, each connecting protrusion 222 is formed with a second through hole 2221, and each connecting protrusion 222 is provided with a fastening nut 222a. Each second through hole 2221 is communicated with the inner cavity of the corresponding fastening nut 222a. Each fastening screw 250 is sequentially passed through the corresponding first through hole 2121 and the corresponding second through hole 2221, and is screwed with the inner wall of the corresponding fastening nut 222a. In this way, each connecting protrusion 222 is ensured to be firmly connected with the corresponding positioning protrusion 212, so as to connect the band 210 with the bracket 220.

[0040] In one embodiment, see Figure 2 and Figure 3 The battery module assembly mechanism 10 further includes a waterproof glue 600. The bottom wall of the housing cavity 301 is formed with a sink 304 connected to the through hole 302. The locking member 230 is sequentially passed through the sink 304 and the through hole 302, and is screwed with the inner wall of the screw hole 2241. The locking end of the locking member 230 abuts against the bottom wall of the sink 304. The waterproof glue 600 is filled and set in the sink 304 to block the sink 304. In this embodiment, by filling the waterproof glue 600 in the sink 304, the sink 304 is blocked to avoid the risk of water ingress at the connection between the upper shell 300 and the bracket 220, thereby ensuring that the battery module assembly mechanism 10 has good waterproof performance.

[0041] In one embodiment, see Figure 1 and Figure 2 The battery module assembly mechanism 10 further includes a sticker 700. The outer wall of the upper shell 300 is formed with a pasting groove 305. The pasting groove 305 is connected to the sink 304. The sticker 700 is bonded to the inner wall of the pasting groove 305 to limit the waterproof glue 600 to be accommodated in the sink 304. In this way, the waterproof glue 600 is firmly limited in the sink 304 by the setting of the sticker 700.

[0042] In one embodiment, see Figure 1 The battery module assembly mechanism 10 further includes a handle 800 , and the handle 800 is disposed on the outer wall of the upper shell 300 .

[0043] The present disclosure also provides a battery pack, including a battery module and an assembly mechanism for the battery module as described in any of the above embodiments.

[0044] Compared with the prior art, the present invention has at least the following advantages:

[0045] By setting the fixing component 200, the battery module 20 is fixed to the upper shell 300, so that the upper shell 300 and the base 100 jointly bear the weight of the battery module 20, eliminating the assembly method in the prior art in which only the base 100 bears the weight of the battery module 20, reducing the force concentration at the connection between the base 100 and the upper shell 300, thereby avoiding the risk of rupture at the connection between the base 100 and the upper shell 300, and further preventing the risk of water intrusion into the battery module 20, thereby improving the safety of the battery module 20.

[0046] The above-mentioned embodiments only express several implementation methods of the present disclosure, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the disclosed patent. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present disclosure, and these all belong to the protection scope of the present disclosure. Therefore, the protection scope of the disclosed patent shall be subject to the attached claims.

Claims

1. A battery module assembly mechanism, characterized in that: include: A base having a bearing slot formed therein, wherein the bearing slot is used to bear the battery module; A fixing assembly, comprising a band, a bracket and a locking member, wherein the band is used to bundle the battery module, and two positioning protrusions are respectively arranged at the two ends of the band at the top of the battery module, the bracket is arranged at the top of the battery module, and two connecting protrusions are respectively arranged on both sides of the bracket, the two connecting protrusions are arranged in one-to-one correspondence with the two positioning protrusions, and each connecting protrusion is connected to the corresponding positioning protrusion, and a fixing stud is arranged on the side of the bracket away from the battery module, and the fixing stud is formed with a screw hole; The upper shell is formed with a covering cavity, and the upper shell cover is connected to the base so that the covering cavity is used to cover the battery module. The bottom wall of the covering cavity is also formed with a through hole, and the through hole is correspondingly connected to the screw hole. The locking piece is passed through the through hole and is screwed to the inner wall of the screw hole.

2. The battery module assembly mechanism according to claim 1, characterized in that: The fixing assembly also includes a plurality of fixing screws, a plurality of first through holes are formed on the outer peripheral wall of the bearing groove, and a plurality of fixing holes are formed on the outer peripheral wall of the cover cavity. The plurality of fixing holes are arranged in one-to-one correspondence with the plurality of first through holes, and each of the fixing screws is passed through the corresponding first through hole and is threadedly connected to the inner wall of the corresponding fixing hole.

3. The battery module assembly mechanism according to claim 2, characterized in that: It also includes a waterproof ring, which has a plurality of second through holes formed on its periphery. The waterproof ring is abutted against the outer peripheral wall of the bearing groove so that the plurality of second through holes are arranged one-to-one with the plurality of first through holes. Each of the fixing screws is sequentially passed through the corresponding first through hole and the corresponding second through hole, and is threadedly connected to the inner wall of the corresponding fixing hole.

4. The battery module assembly mechanism according to claim 1, characterized in that: It also includes a buffer component, which includes a first buffer pad and a second buffer pad, the first buffer pad is attached to the bottom wall of the supporting groove, and the first buffer pad abuts against the bottom end of the battery module, the second buffer pad is attached to the side of the bracket away from the battery module, and the second buffer pad abuts against the inner wall of the cover cavity.

5. The battery module assembly mechanism according to claim 4, characterized in that: The first buffer pad and the second buffer pad are both rubber pads.

6. The battery module assembly mechanism according to claim 1, characterized in that: Each of the connecting protrusions is detachably connected to the corresponding positioning protrusion.

7. The battery module assembly mechanism according to claim 6, characterized in that: The fixing assembly also includes two fastening screws, each of the positioning protrusions is formed with a first through hole, each of the connecting protrusions is formed with a second through hole, and each of the connecting protrusions is provided with a fastening nut, each of the second through holes is connected to the inner cavity of the corresponding fastening nut, and each of the fastening screws is sequentially passed through the corresponding first through hole and the corresponding second through hole, and is threadedly connected to the inner wall of the corresponding fastening nut.

8. The battery module assembly mechanism according to claim 1, characterized in that: It also includes waterproof glue, and the bottom wall of the cover cavity is formed with a sink connected to the through hole. The locking piece is sequentially passed through the sink and the through hole, and is screwed to the inner wall of the screw hole, and the locking end of the locking piece is in contact with the bottom wall of the sink, and the waterproof glue is filled in the sink to seal the sink.

9. The battery module assembly mechanism according to claim 8, characterized in that: It also includes a sticker, the outer wall of the upper shell is formed with a sticking groove, the sticking groove is connected to the sink, and the sticker is bonded to the inner wall of the sticking groove to limit the waterproof glue and place it in the sink.

10. A battery pack, characterized in that: It comprises a battery module and the assembly mechanism for the battery module as claimed in any one of claims 1 to 9.

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