Lithium battery BMS (Battery Management System) protection plate

Abstract

The utility model discloses a lithium battery BMS protection plate which comprises a protection plate package, one side of the protection plate package is provided with a first flat cable belt, the other side of the protection plate package is provided with a second flat cable belt, and the first flat cable belt and the second flat cable belt respectively comprise an elastic belt and a flat cable column. A first back adhesive layer is arranged on the rear end face of the protection plate package, and a release film is arranged on the outer side of the first back adhesive layer; the first back adhesive layer is arranged on the back of the protection plate package in advance, when the protection plate package is fixed, a release film of the first back adhesive layer is torn off, and the protection plate package is pasted and fixed at a specified position of the lithium battery pack; according to use requirements, the elastic band of the winding displacement band can be lengthened, the orientation of the elastic band can be adjusted, in the adjusting process, the elastic band is pasted on a lithium battery pack according to a specified winding displacement path, and during winding displacement, a line body is wound on a winding displacement column in an S-shaped structure, so that neat winding displacement is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of lithium battery protection boards, in particular to a lithium battery BMS protection board. Background Art

[0002] The lithium battery protection board (also known as the battery management system, BMS) is a key electronic device used to monitor and protect the performance and safety of lithium-ion batteries. The functions of the lithium battery protection board include: battery status monitoring, battery protection, balanced charge and discharge, communication and control, fault diagnosis and alarm. The working principle of the lithium battery protection board is to ensure that the lithium battery operates in a safe, stable and efficient state through monitoring, protection, balancing and control functions.

[0003] The lithium battery pack is connected to the protection board through the wiring. The working state of the lithium battery protection board is related to the normal use and safety of the lithium battery pack. When fixing the protection board, it is usually manually cut and fixed to the lithium battery pack with double-sided tape, and then the wiring is arranged. In order to ensure the neatness of the wiring, multiple pieces of double-sided tape are needed to fix the wiring, which leads to low assembly efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a lithium battery BMS protection board to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a lithium battery BMS protection board, including a protection board package, a first wiring harness is provided on one side of the protection board package, a second wiring harness is provided on the other side of the protection board package, the first wiring harness and the second wiring harness both include elastic bands and wiring posts, a first back adhesive layer is provided on the rear end surface of the protection board package, and a release film is provided on the outer side of the first back adhesive layer.

[0006] Wherein, a plurality of groups of wiring posts are arranged on the elastic band, and the plurality of groups of wiring posts are evenly distributed along the side line direction of the elastic band.

[0007] Wherein, a second adhesive layer is arranged on the rear end surface of the elastic band, and a release film is arranged on the outer side of the second adhesive layer.

[0008] The protection plate package includes an aluminum shell, and the aluminum shell has a built-in protection circuit board.

[0009] Wherein, the protection plate package includes an aluminum cover plate.

[0010] Wherein, the aluminum cover plate and the aluminum shell are fixedly connected by screws.

[0011] Wherein, a cable interface is provided on one side of the protection plate package.

[0012] Wherein, a charging cable interface is provided on the other side of the protection board package.

[0013] The cable interface is electrically connected to the lithium battery pack via a cable, and the charging cable interface is electrically connected to the lithium battery pack via a charging cable.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The back of the protection plate package of the utility model is pre-arranged with a first adhesive layer. When fixing the protection plate package, tear off the release film of the first adhesive layer and stick the protection plate package to the designated position of the lithium battery pack. There is no need to cut double-sided tape separately for sticking, and the assembly efficiency is high.

[0016] 2. The utility model can lengthen the elastic band of the cable arrangement belt and adjust the direction of the elastic band according to the use requirements. During the adjustment process, the elastic band is pasted on the lithium battery pack according to the specified cable arrangement path. When arranging the cables, the wire body is wound around the cable arrangement column in an S-shaped structure to achieve neat cable arrangement. There is no need to manually cut and use multiple pieces of double-sided tape to fix the cables. The wiring and arranging are convenient and the assembly efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the top view structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the bottom view structure of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of the protection board package of the utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the elastic band and the cable arrangement column of the utility model.

[0021] In the figure: 1. Protection plate package; 2. First cable belt; 3. Second cable belt; 4. First adhesive layer; 11. Aluminum shell; 12. Protection circuit board; 13. Aluminum cover; 14. Cable interface; 15. Charging cable interface; 21. Elastic band; 22. Cable post; 23. Second adhesive layer. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-4 The utility model provides a technical solution: a lithium battery BMS protection board, including a protection board package 1, a first wiring tape 2 is arranged on one side of the protection board package 1, and a second wiring tape 3 is arranged on the other side of the protection board package 1. The first wiring tape 2 and the second wiring tape 3 both include an elastic tape 21 and a wiring column 22. A first back adhesive layer 4 is arranged on the rear end surface of the protection board package 1, and a release film is arranged on the outer side of the first back adhesive layer 4.

[0024] Among them, the protection circuit board 12 is encapsulated in an aluminum shell to form a protection board package 1. On the one hand, the protection circuit board 12 is protected to prevent the protection circuit board 12 from being directly exposed and adhering to dust and other impurities. On the other hand, the aluminum material has good heat dissipation performance, so that the aluminum shell used for packaging has good heat dissipation performance, which is beneficial to the heat dissipation of the protection circuit board 12 and can dissipate the heat generated by the protection board when working in time.

[0025] Among them, a first adhesive layer 4 is pre-arranged on the back of the protection plate package 1. When fixing the protection plate package 1, the release film of the first adhesive layer 4 is torn off, and the protection plate package 1 is pasted and fixed at the designated position of the lithium battery pack. There is no need to cut the double-sided tape separately for pasting, and the assembly efficiency is high.

[0026] Among them, the first cable strip 2 and the second cable strip 3 can also be pasted on the lithium battery pack, and the first cable strip 2 and the second cable strip 3 are made of flexible material. The first cable strip 2 and the second cable strip 3 can be bent in any direction. By adjusting the pasting position of the first cable strip 2 and the second cable strip 3 according to the wiring path, the wiring path can be determined. When wiring, the wire body is wound around the wiring column 22 in an S-shaped structure, which can achieve neat wiring, effectively prevent the line from being entangled, and facilitate subsequent maintenance.

[0027] The elastic band 21 is provided with a plurality of groups of wiring posts 22 , and the plurality of groups of wiring posts 22 are evenly distributed along the sideline direction of the elastic band 21 .

[0028] Among them, the elastic band 21 has a certain elasticity. Applying a certain external force can stretch the elastic band 21. The total length of the first cable arrangement band 2 and the second cable arrangement band 3 can be adjusted according to usage requirements, thereby improving the flexibility of cable arrangement.

[0029] A second adhesive layer 23 is disposed on the rear end surface of the elastic band 21 , and a release film is disposed on the outer side of the second adhesive layer 23 .

[0030] When fixing the first cable strip 2 and the second cable strip 3, tear off the release film of the second adhesive layer 23, and according to the use requirements, stretch the elastic band 21 of the first cable strip 2 and the second cable strip 3, and adjust the direction of the elastic band 21. During the adjustment process, stick the elastic band 21 of the first cable strip 2 and the second cable strip 3 on the lithium battery pack. When wiring is performed later, the wire body is wound around the wiring column 22 in an S-shaped structure to achieve neat wiring.

[0031] There is no need to manually cut and use multiple pieces of double-sided tape to fix the cable, which makes wiring and arranging the cable convenient and the assembly efficiency high. The cable body is not directly pasted, which makes it easy to assemble and disassemble the cable body and effectively avoids glue remaining on the surface of the cable body.

[0032] Among them, the protection board package 1 includes an aluminum shell 11, and the aluminum shell 11 has a built-in protection circuit board 12. The lithium battery BMS protection board usually includes a control IC, a MOS switch, a resistor, a capacitor and auxiliary devices, a memory, etc. The control IC controls the MOS switch to turn on when everything is normal, so that the battery cell is connected to the external circuit. When the battery cell voltage or loop current exceeds the specified value, it immediately controls the MOS switch to turn off to protect the safety of the battery cell.

[0033] The protection plate package 1 includes an aluminum cover plate 13 .

[0034] The aluminum cover 13 and the aluminum shell 11 are fixedly connected by screws, and the aluminum cover 13 and the aluminum shell 11 are detachably connected, which is convenient for maintenance. The aluminum material has good heat dissipation performance, so that the aluminum shell used for packaging has good heat dissipation performance, which is convenient for heat dissipation.

[0035] A cable interface 14 is provided on one side of the protection board package 1 .

[0036] A charging line interface 15 is provided on the other side of the protection board package 1 .

[0037] Among them, the cable interface 14 is electrically connected to the lithium battery pack through the cable, and the charging cable interface 15 is electrically connected to the lithium battery pack through the charging cable. When wiring, one end of the cable is inserted into the cable interface 14 of the protection board package 1, and then the cable body is welded to the terminals of the lithium battery pack. One end of the charging cable is connected to the protection board package 1, and the other end of the charging cable is welded to the terminals of the lithium battery pack.

[0038] Working principle: first fix the protection plate package 1, tear off the release film of the first adhesive layer 4, and paste and fix the protection plate package 1 at the designated position of the lithium battery pack, and then adjust and fix the first cable strip 2 and the second cable strip 3 according to the wiring and wiring requirements, tear off the release film of the second adhesive layer 23, and according to the use requirements, stretch the elastic band 21 of the first cable strip 2 and the second cable strip 3, and adjust the direction of the elastic band 21. During the adjustment process, paste the elastic band 21 of the first cable strip 2 and the second cable strip 3 on the lithium battery pack according to the designated wiring path. When wiring, insert one end of the cable into the cable interface 14 of the protection plate package 1, and wrap the wire body in an S-shaped structure around the cable post 22 to arrange the wire neatly, and then weld the wire body of the cable to the terminals of the lithium battery pack. One end of the charging cable is connected to the protection plate package 1, and then the wire body of the charging cable is wrapped around the cable post 22 in an S-shaped structure to arrange the wire neatly, and the other end of the charging cable is welded to the terminals of the lithium battery pack.

[0039] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A lithium battery BMS protection board, comprising a protection board package (1), characterized in that: A first cable arrangement tape (2) is arranged on one side of the protection plate package (1), and a second cable arrangement tape (3) is arranged on the other side of the protection plate package (1), the first cable arrangement tape (2) and the second cable arrangement tape (3) both comprise an elastic tape (21) and a cable arrangement column (22), a first back adhesive layer (4) is arranged on the rear end surface of the protection plate package (1), and a release film is arranged on the outer side of the first back adhesive layer (4).

2. A lithium battery BMS protection board according to claim 1, characterized in that: The elastic band (21) is provided with a plurality of groups of wiring posts (22), and the plurality of groups of wiring posts (22) are evenly distributed along the sideline direction of the elastic band (21).

3. A lithium battery BMS protection board according to claim 1, characterized in that: A second adhesive layer (23) is provided on the rear end surface of the elastic band (21), and a release film is provided on the outer side of the second adhesive layer (23).

4. A lithium battery BMS protection board according to claim 1, characterized in that: The protection plate package (1) comprises an aluminum shell (11), wherein the aluminum shell (11) has a built-in protection circuit board (12).

5. A lithium battery BMS protection board according to claim 4, characterized in that: The protection plate package (1) comprises an aluminum cover plate (13).

6. A lithium battery BMS protection board according to claim 5, characterized in that: The aluminum cover plate (13) and the aluminum housing (11) are fixedly connected by screws.

7. A lithium battery BMS protection board according to claim 1, characterized in that: A cable interface (14) is provided on one side of the protection plate package (1).

8. A lithium battery BMS protection board according to claim 7, characterized in that: A charging cable interface (15) is provided on the other side of the protection plate package (1).

9. A lithium battery BMS protection board according to claim 8, characterized in that: The cable interface (14) is electrically connected to the lithium battery pack via the cable, and the charging cable interface (15) is electrically connected to the lithium battery pack via the charging cable.

Images