Battery pack structure

Abstract

The utility model discloses a battery pack structure which is characterized in that a BMS assembly is detachably connected with one side, far away from a battery module, of a BMS fixing bracket, so that the BMS assembly is mounted on the BMS fixing bracket, then the BMS fixing bracket is detachably connected with a shell, so that the BMS fixing bracket is mounted on the shell, and optionally, the detachable connection is bolt connection or clamping connection; therefore, the BMS assembly is convenient to maintain or replace manually, the BMS or the battery module is prevented from being damaged, meanwhile, the BMS assembly is prevented from being loosened due to changes of environmental conditions, the reliability of the battery pack structure is improved, the BMS fixing support is arranged above the battery module, the battery module is pressed and held, the BMS fixing support is attached to the battery module, and the battery pack structure is more reliable. Therefore, no gap exists between the battery module and the BMS fixing support, shaking of the battery module is avoided, and meanwhile damage to the battery module caused when the BMS fixing support and the battery module are installed through bolt connection or clamping connection is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field especially relates to a battery package structure. BACKGROUND

[0002] In the battery module, the BMS assembly is mainly used for intelligent management and maintenance of each battery unit, prevents overcharge and overdischarge of the battery, so as to prolong the service life of the battery, and monitors the state of the battery.

[0003] At present, the BMS assembly of the battery package is usually installed on the battery module by using the adhesive tape fixing method or the glue fixing method, so that the BMS assembly is difficult to disassemble when being repaired or replaced, which can cause damage of the BMS assembly or the battery module, and since the adhesion of the adhesive tape and the adhesion strength of the glue are affected by the environment, the adhesion is lost with the change of the environmental conditions, which can easily cause loosening of the BMS assembly. UTILITY MODEL CONTENT

[0004] The utility model discloses a battery package structure which overcomes the defects in the prior art.

[0005] The utility model discloses a battery package structure which overcomes the defects in the prior art.

[0006] A battery package structure, characterized by comprising: a shell, a battery module, a BMS fixing support and a BMS assembly, the shell is provided with a containing cavity; the battery module is arranged in the containing cavity; the BMS fixing support is arranged above the battery module, and the BMS fixing support is detachably connected with the shell; the BMS assembly is detachably connected with the side, away from the battery module, of the BMS fixing support, and the BMS assembly is electrically connected with the battery module.

[0007] In one of the embodiments, the BMS fixing support comprises a first connecting plate and a second connecting plate, the second connecting plate is arranged on the two sides of the first connecting plate respectively, the first connecting plate is arranged in close contact with the battery module, and the second connecting plate is arranged in close contact with the shell.

[0008] In one of the embodiments, the first connecting plate and the second connecting plate are stainless steel plates or aluminum alloy plates.

[0009] In one of the embodiments, the BMS assembly comprises a BMS mounting plate and a first heat dissipation plate, and the first heat dissipation plate is arranged on the side of the BMS mounting plate, close to the first connecting plate.

[0010] In one of the embodiments, a heat dissipation area is arranged between the first heat dissipation plate and the first connecting plate, and heat-conducting silicone grease or a heat-conducting gasket is arranged on the heat dissipation area.

[0011] In one of the embodiments, the BMS mounting plate is provided with a second heat dissipation plate on the side away from the first heat dissipation plate.

[0012] In one of the embodiments, a plurality of first connecting members are formed on the first connecting plate, and a plurality of first through holes are formed on the BMS mounting plate, the first connecting members and the first through holes are oppositely arranged, a first locking member is arranged through the first through hole, and the first locking member is snap connected or bolted with the first connecting member.

[0013] In one of the embodiments, a plurality of first connecting holes are formed on the second connecting plate, and a plurality of second through holes are formed on the shell, the first connecting holes and the second through holes are oppositely arranged, a second locking member is arranged through the second through hole, and the second locking member is snap connected or bolted with the first connecting hole.

[0014] In one of the embodiments, a cover is further included, a plurality of second connecting holes are formed on the cover, a plurality of third through holes are formed on the shell, the second connecting holes and the third through holes are oppositely arranged, a third locking member is arranged through the third through hole, and the third locking member is snap connected or bolted with the second connecting hole.

[0015] In one of the embodiments, the cover is provided with a hand holding member.

[0016] In one of the embodiments, the cover is further provided with a sealing rubber ring.

[0017] Compared with the prior art, the utility model has at least the following advantages:

[0018] The utility model discloses a battery package structure is opened with the accommodation cavity through the shell, makes battery module, BMS fixed bolster and BMS assembly install in the accommodation cavity, through the detachable connection of BMS assembly and the side of BMS fixed bolster far away from battery module, makes BMS assembly install on BMS fixed bolster, again through the detachable connection of BMS fixed bolster and the shell, makes BMS fixed bolster install on the shell, optionally, detachable connection is bolt connection or clamping connection, thereby convenient for artificial maintenance or replacement to BMS assembly, avoided the damage of BMS or battery module, simultaneously avoided the BMS assembly loose because of the change of environmental condition, improved the reliability of battery package structure, and BMS fixed bolster set up in the top of battery module, and the battery module is pressed and holds, makes BMS fixed bolster and battery module adhere, thereby the structure of BMS fixed bolster and battery module is more compact, makes battery module and BMS fixed bolster between not have the gap, avoided the battery module and caused the damage of battery module to shake, simultaneously avoided the damage of battery module because of bolt connection or clamping connection to the installation of BMS fixed bolster and battery module, because BMS assembly and battery module electric connection and the compact structure of BMS fixed bolster and battery module, the BMS assembly can monitor the battery module conveniently. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawing in the embodiment briefly introduced.

[0020] Figure 1 It is a structure schematic drawing of the battery package structure in the embodiment of the utility model;

[0021] Figure 2 It is another structure schematic drawing of the battery package structure in the embodiment of the utility model;

[0022] Figure 3 It is Figure 1 The assembly structure schematic drawing of battery module, BMS fixed bolster and BMS assembly in

[0023] BRIEF DESCRIPTION OF DRAWINGS: 100, shell; 200, battery module; 300, BMS fixed bolster; 400, BMS assembly; 110, accommodation cavity; 310, first connecting plate; 320, second connecting plate; 410, BMS mounting plate; 420, first heat dissipation plate; 330, heat dissipation area; 430, second heat dissipation plate; 311, first connecting piece; 411, first through hole; 411a, first locking piece; 321, first connecting hole; 120, second through hole; 121, second locking piece; 500, cover; 130, third through hole; 131, third locking piece; 510, handheld piece; DETAILED DESCRIPTION

[0024] For the convenience of understanding the utility model, the utility model will be described more fully below with reference to the relevant drawings.

[0025] Please refer to Figures 1 to 3 A battery pack structure 10, including: shell 100, battery module 200, BMS fixed support 300 and BMS assembly 400, shell 100 is set with containing cavity 110;Battery module 200 is set in containing cavity 110;BMS fixed support 300 is set in the upper of battery module 200, BMS fixed support 300 is detachably connected with shell 100, BMS fixed support 300 includes first connecting plate 310 and second connecting plate 320, second connecting plate 320 is set respectively in the both sides of first connecting plate 310, first connecting plate 310 is set with battery module 200, second connecting plate 320 is set with shell 100;BMS assembly 400 is detachably connected with the side of BMS fixed support 300 away from battery module 200, BMS assembly 400 is electrically connected with battery module 200.

[0026] It should be noted that, by shell 100 is set with containing cavity 110, battery module 200, BMS fixed support 300 and BMS assembly 400 are installed in containing cavity 110, BMS assembly 400 is detachably connected with the side of BMS fixed support 300 away from battery module 200, BMS assembly 400 is installed on BMS fixed support 300, and BMS fixed support 300 is detachably connected with shell 100, BMS fixed support 300 is installed on shell 100, optionally, detachable connection is bolt connection or clamping connection, thereby facilitating manual maintenance or replacement of BMS assembly 400, avoiding damage to BMS or battery module 200, while avoiding loosening of BMS assembly 400 due to changes in environmental conditions, improving the reliability of the battery pack structure, BMS fixed support 300 is set in the upper of battery module 200, and holds battery module 200, so that BMS fixed support 300 is attached to battery module 200, so that the structure of BMS fixed support 300 and battery module 200 is more compact, so that there is no gap between battery module 200 and BMS fixed support 300, avoiding causing battery module 200 to shake, while avoiding damage to battery module 200 when installing BMS fixed support 300 and battery module 200 by bolt connection or clamping connection, since BMS assembly 400 is electrically connected with battery module 200 and the structure of BMS fixed support 300 and battery module 200 is compact, BMS assembly 400 can monitor battery module 200.

[0027] Please refer again to Figure 2 And Figure 3In an embodiment, the first connecting plate 310 and the second connecting plate 320 are stainless steel plates or aluminum alloy plates. Since the aluminum alloy plate is easy to process and shape, and is easier to maintain than the stainless steel plate during use, the aluminum alloy plate is preferably used as the first connecting plate 310 and the second connecting plate 320.

[0028] Please refer again to Figure 3 In an embodiment, the BMS assembly 400 includes a BMS mounting plate 410 and a first heat dissipation plate 420. The first heat dissipation plate 420 is arranged on the side of the BMS mounting plate 410 close to the first connecting plate 310. Since the components on the BMS mounting plate 410 generate a large amount of heat during operation, the first heat dissipation plate 420 is installed on the BMS mounting plate 410, thereby avoiding overheating of the components on the BMS mounting plate 410, so that the BMS system can continuously monitor the battery module 200, and the safety of the battery module 200 is improved.

[0029] Please refer again to Figure 3 Further, a heat dissipation area 330 is arranged between the first heat dissipation plate 420 and the first connecting plate 310, and a heat-conducting silicone grease or a heat-conducting gasket is arranged on the heat dissipation area 330, so as to further improve the heat dissipation effect of the BMS assembly 400. Since the heat-conducting gasket has an ultra-thin thickness and a low density, the weight of the battery pack can be reduced. Preferably, the heat-conducting gasket is arranged on the heat dissipation area 330.

[0030] Please refer again to Figure 3 Preferably, the BMS mounting plate 410 is provided with a second heat dissipation plate 430 on the side away from the first heat dissipation plate 420, so as to further improve the heat dissipation effect of the BMS assembly 400.

[0031] Please refer again to Figure 3 In an embodiment, a plurality of first connecting pieces 311 are arranged on the first connecting plate 310, and a plurality of first through holes 411 are arranged on the BMS mounting plate 410. The first connecting pieces 311 and the first through holes 411 are arranged opposite to each other. A first locking piece 411a is arranged on the first through hole 411, and the first locking piece 411a is connected to the first connecting piece 311 by clamping or bolting.

[0032] It should be noted that the BMS assembly 400 is placed above the BMS fixing support 300 by artificial means, so that the first through hole 411 is aligned with the first connecting piece 311, a connecting hole is formed on the first connecting piece 311, and the first locking piece 411a is used to pass through the first through hole 411 and the connecting hole on the first connecting piece 311 to be fixed, so that the BMS assembly 400 is installed on the BMS fixing support 300, and the first locking piece 411a and the first connecting piece 311 are connected by clamping or bolt connection. Both clamping connection and bolt connection are detachable connections, which are convenient for replacement or maintenance of the BMS assembly 400. Since the stability of the bolt connection is higher than that of the clamping connection, preferably, the first locking piece 411a and the first connecting piece 311 are fixed by bolt connection.

[0033] Please refer again to Figure 2 and Figure 3 In an embodiment, a plurality of first connecting holes 321 are formed on the second connecting plate 320, a plurality of second through holes 120 are formed on the shell 100, the first connecting holes 321 and the second through holes 120 are oppositely arranged, and a second locking piece 121 is arranged on the second through hole 120. The second locking piece 121 is connected with the first connecting hole 321 by clamping or bolt connection.

[0034] It should be noted that the BMS fixing support 300 is placed above the battery module 200 by artificial means, so that the second through hole 120 is aligned with the first connecting hole 321, and then the second locking piece 121 is used to pass through the second through hole 120 and the first connecting hole 321 to be fixed, so that the BMS fixing support 300 and the shell 100 are fixed and installed. Similarly, the second locking piece 121 and the first connecting hole 321 are fixed by bolt connection.

[0035] Please refer again to Figure 1 and Figure 2 In an embodiment, it further includes a cover 500, a plurality of second connecting holes are formed on the cover 500, a plurality of third through holes 130 are formed on the shell 100, the second connecting holes and the third through holes 130 are oppositely arranged, and a third locking piece 131 is arranged on the third through hole 130. The third locking piece 131 is connected with the second connecting hole by clamping or bolt connection.

[0036] It should be noted that the cover 500 is placed above the shell 100 by artificial means, so that the third through hole 130 is aligned with the second connecting hole, and then the third locking piece 131 is used to pass through the third through hole 130 and the second connecting hole to be fixed, so that the cover 500 and the shell 100 are fixed and installed. Similarly, the third locking piece 131 and the first connecting hole 321 are fixed by bolt connection.

[0037] Please refer again toFigure 1 In an embodiment, the cover body 500 is provided with a hand-held piece 510, which facilitates manual transfer of the battery pack.

[0038] In an embodiment, the cover body is further provided with a sealing rubber ring, which can improve the sealing performance of the battery pack, prevent moisture from entering the inside of the battery pack, and thus improve the stability and service life of the battery pack.

[0039] The above embodiments only express several embodiments of the utility model, and the description is more specific and detailed, but it cannot be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled persons in the art, without departing from the concept of the utility model, a number of 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. A battery pack structure, characterized by, The utility model relates to a battery module fixing device of a battery pack, which comprises the following parts: An outer shell with a containing cavity; A battery module arranged in the containing cavity; A BMS fixing support arranged above the battery module, which is detachably connected with the outer shell, and comprises a first connecting plate and a second connecting plate, the second connecting plate is arranged on both sides of the first connecting plate respectively, the first connecting plate is arranged in close contact with the battery module, and the second connecting plate is arranged in close contact with the outer shell; and A BMS assembly detachably connected with the side of the BMS fixing support away from the battery module, which is electrically connected with the battery module.

2. The battery pack structure of claim 1, wherein The first connecting plate and the second connecting plate are stainless steel plates or aluminum alloy plates.

3. The battery pack structure of claim 1, wherein The BMS assembly comprises a BMS mounting plate and a first heat dissipation plate arranged on the side of the BMS mounting plate close to the first connecting plate.

4. The battery pack structure of claim 3, wherein A heat dissipation area is arranged between the first heat dissipation plate and the first connecting plate, and heat-conducting silicone grease or a heat-conducting gasket is arranged on the heat dissipation area.

5. The battery pack structure of claim 3, wherein A second heat dissipation plate is arranged on the side of the BMS mounting plate away from the first heat dissipation plate.

6. The battery pack structure of claim 3, wherein A plurality of first connecting pieces are arranged on the first connecting plate, a plurality of first through holes are arranged on the BMS mounting plate, the first connecting pieces and the first through holes are arranged oppositely, a first locking piece is arranged on the first through hole, and the first locking piece is snap-connected or bolt-connected with the first connecting piece.

7. The battery pack structure of claim 1, wherein A plurality of first connecting holes are arranged on the second connecting plate, a plurality of second through holes are arranged on the outer shell, the first connecting holes and the second through holes are arranged oppositely, a second locking piece is arranged on the second through hole, and the second locking piece is snap-connected or bolt-connected with the first connecting hole.

8. The battery pack structure of claim 1, wherein, A cover is further arranged, a plurality of second connecting holes are arranged on the cover, a plurality of third through holes are arranged on the outer shell, the second connecting holes and the third through holes are arranged oppositely, a third locking piece is arranged on the third through hole, and the third locking piece is snap-connected or bolt-connected with the second connecting hole.

9. The battery pack structure of claim 8, wherein, A handpiece is arranged on the cover.

10. The battery pack structure of claim 8, wherein, A sealing rubber ring is arranged on the cover.

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