Protection device for BMS battery

Abstract

The utility model discloses a protective device for a BMS (battery management system) battery, which belongs to the technical field of BMS battery protection and comprises a protective upper cover and a protective bottom cover, a protective box body is fixedly mounted between the protective upper cover and the protective bottom cover and consists of a rectangular frame and four L-shaped rubber air bags, the L-shaped rubber air bags are symmetrically and fixedly mounted on the inner wall of the rectangular frame, and the protective box body is fixedly connected with the rectangular frame. A cooling device is fixedly installed in the protection box body and among the four L-shaped rubber air bags, the cooling device is composed of a rectangular cooling plate, a water inlet pipeline and a water outlet pipeline, and the cooling device is connected with cooling water circulation equipment, so that even if the external air temperature is high due to hot weather and the like, the cooling device can be used for cooling water. The cooling device can also effectively cool the BMS battery structure and the interior of the protection box body through cooling water in cooperation with cooling water circulation equipment, so that the BMS battery structure can be prevented from working in a high-temperature environment, and the aging speed of the BMS battery structure is finally reduced.

Description

Technical Field

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

[0002] Lithium battery refers to a battery containing lithium (including metallic lithium, lithium alloys, lithium ions, and lithium polymers) in the electrochemical system. BMS, or battery management system, is the link between the battery and the user. The main target of BMS is secondary batteries. Its purpose is to improve the utilization rate of the battery, prevent the battery from overcharging and over-discharging, extend the battery life, and monitor the battery status. In the existing patent application with application number CN202122045734.X, a BMS lithium battery pack protection structure is proposed, in which the air intake fan introduces outside air into the air intake slot, and then discharges it through the air transmission slot, thereby accelerating the air flow inside the box, taking away the heat generated by the lithium battery pack, and preventing the lithium battery pack from working in a high temperature environment for a long time, reducing the aging rate of the lithium battery pack, and extending the service life of the lithium battery pack. However, when the temperature of the outside air is high due to hot weather and other reasons, the effect of cooling the inside of the box by exchanging the air inside and outside the box with the air intake fan is poor, resulting in the temperature inside the box still being high, and then the lithium battery pack will still work in a high temperature environment, and ultimately it will still cause the lithium battery pack to age quickly and shorten its service life, so it needs to be improved. Utility Model Content

[0003] The main purpose of the utility model is to provide a BMS battery protection device, which can effectively solve the problems in the background technology.

[0004] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0005] A protection device for a BMS battery comprises a protection upper cover and a protection bottom cover, a protection box body is fixedly installed between the protection upper cover and the protection bottom cover, the protection box body is composed of a rectangular frame and L-shaped rubber airbags, there are four L-shaped rubber airbags and they are symmetrically fixedly installed on the inner wall of the rectangular frame, a cooling device is fixedly installed in the protection box body and between the four L-shaped rubber airbags, the cooling device is composed of a rectangular cooling plate, a water inlet pipe and a water outlet pipe, the water inlet pipe is fixedly installed on the lower side of one end of the rectangular cooling plate, the water outlet pipe is fixedly installed on the upper side of one end of the rectangular cooling plate, and the water inlet pipe and the water outlet pipe can be connected to a cooling water circulation device.

[0006] Preferably, the rectangular frame on the protection box body is fixedly connected to the protection upper cover and the protection bottom cover.

[0007] Preferably, two ventilation windows and two installation through holes are provided on the rectangular frame on the protection box body, and a ventilation window protection net is fixedly installed in the ventilation window.

[0008] Preferably, the rectangular cooling plate on the cooling device is in contact with four L-shaped rubber airbags, and the rectangular cooling plate is a hollow structure.

[0009] Preferably, the water inlet pipe and the water outlet pipe on the cooling device are respectively fixedly installed in two installation through holes opened on the rectangular frame.

[0010] Preferably, the rectangular cooling plate on the cooling device is sleeved on the BMS battery structure, and a plurality of ventilation holes are provided on the rectangular cooling plate.

[0011] Compared with the prior art, the utility model has the following beneficial effects:

[0012] By providing a protective box and placing the BMS battery structure in the protective box, the protective box can protect the BMS battery structure, thereby reducing the probability of the BMS battery structure being damaged by collision; by providing a cooling device connected to the cooling water circulation equipment, even if the outside air temperature is high due to hot weather or other reasons, the cooling device can cooperate with the cooling water circulation equipment to effectively cool the BMS battery structure and the inside of the protective box through cooling water, thereby avoiding the BMS battery structure from working in a high temperature environment, and ultimately reducing the aging speed of the BMS battery structure, ensuring that the BMS battery structure has a longer service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 This is a disassembled diagram of the utility model;

[0014] Figure 2 It is a structural schematic diagram of the protection box of the utility model;

[0015] Figure 3 It is a structural schematic diagram of the cooling device of the utility model;

[0016] Figure 4 It is a cross-sectional view of the cooling device of the present utility model.

[0017] In the figure: 1. Protective upper cover; 2. Protective bottom cover; 3. Protective box; 4. Cooling device; 5. Rectangular frame; 6. Breathable window protection net; 7. Installation through hole; 8. L-shaped rubber airbag; 9. Rectangular cooling plate; 10. Ventilation hole; 11. Water inlet pipe; 12. Water outlet pipe; 13. BMS battery structure. DETAILED DESCRIPTION

[0018] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0019] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a protection device for a BMS battery includes a protection upper cover 1 and a protection bottom cover 2, a protection box 3 is fixedly installed between the protection upper cover 1 and the protection bottom cover 2, the protection box 3 is composed of a rectangular frame 5 and an L-shaped rubber airbag 8, there are four L-shaped rubber airbags 8 and they are symmetrically fixedly installed on the inner wall of the rectangular frame 5, the rectangular frame 5 on the protection box 3 is fixedly connected to the protection upper cover 1 and the protection bottom cover 2, two ventilation windows and two installation through holes 7 are provided on the rectangular frame 5 on the protection box 3, a ventilation window protection net 6 is fixedly installed in the ventilation window, by setting the protection box 3 and placing the BMS battery structure 13 in the protection box 3 at the same time, the protection box 3 can protect the BMS battery structure 13, thereby reducing the probability of the BMS battery structure 13 being damaged by collision.

[0020] See also Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, a cooling device 4 is fixedly installed in the protective box 3 and between the four L-shaped rubber airbags 8. The cooling device 4 consists of a rectangular cooling plate 9, a water inlet pipe 11 and a water outlet pipe 12. The water inlet pipe 11 is fixedly installed on the lower side of one end of the rectangular cooling plate 9, and the water outlet pipe 12 is fixedly installed on the upper side of one end of the rectangular cooling plate 9. The water inlet pipe 11 and the water outlet pipe 12 can be connected to a cooling water circulation device. The rectangular cooling plate 9 on the cooling device 4 is in contact with the four L-shaped rubber airbags 8, and the rectangular cooling plate 9 is a hollow structure. The water inlet pipe 11 and the water outlet pipe 12 on the cooling device 4 are respectively fixedly installed on the rectangular frame 5. The rectangular cooling plate 9 on the cooling device 4 is sleeved on the BMS battery structure 13, and a plurality of ventilation holes 10 are provided on the rectangular cooling plate 9. The cooling device 4 is connected to the cooling water circulation equipment. Even if the outside air temperature is high due to hot weather or other reasons, the cooling device 4 cooperates with the cooling water circulation equipment to effectively cool the BMS battery structure 13 and the interior of the protective box 3 through cooling water, thereby preventing the BMS battery structure 13 from working in a high temperature environment, and ultimately reducing the aging speed of the BMS battery structure 13, thereby ensuring that the BMS battery structure 13 has a long service life.

[0021] It should be noted that the utility model is a protection device for a BMS battery. When in use, the rectangular frame 5 and the L-shaped rubber airbag 8 on the protection box 3 will protect the BMS battery structure 13 therein, preventing the BMS battery structure 13 from being directly hit by foreign objects, and at the same time, the impact force generated by the collision can be buffered, thereby reducing the probability of the BMS battery structure 13 being damaged by the collision; at the same time, during use, the BMS battery structure 13 will emit a large amount of heat. At this time, the cooling water circulation device connected to the water inlet pipe 11 and the water outlet pipe 12 can be started, so that the cooling water circulation device transports cooling water to the rectangular cooling plate 9 through the water inlet pipe 11. At this time, the cooling water entering the rectangular cooling plate 9 will absorb the heat emitted by the BMS battery structure 13, and then the cooling water that absorbs the heat will flow out from the water outlet pipe 12, so that the cooling water will take away the heat emitted by the BMS battery structure 13, thereby making the ambient temperature of the BMS battery structure 13 lower, and finally the aging speed of the BMS battery structure 13 can be reduced, ensuring that the BMS battery structure 13 has a longer service life.

[0022] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the aforementioned embodiments, it is still possible for a person skilled in the art to modify the technical solutions described in the aforementioned embodiments or to replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model. The protection scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. A BMS battery protection device, comprising a protective upper cover (1) and a protective bottom cover (2), characterized in that: A protective box (3) is fixedly installed between the protective upper cover (1) and the protective bottom cover (2), the protective box (3) is composed of a rectangular frame (5) and L-shaped rubber airbags (8), there are four L-shaped rubber airbags (8) and they are symmetrically fixedly installed on the inner wall of the rectangular frame (5), a cooling device (4) is fixedly installed in the protective box (3) and between the four L-shaped rubber airbags (8), the cooling device (4) is composed of a rectangular cooling plate (9), a water inlet pipe (11) and a water outlet pipe (12), the water inlet pipe (11) is fixedly installed on the lower side of one end of the rectangular cooling plate (9), the water outlet pipe (12) is fixedly installed on the upper side of one end of the rectangular cooling plate (9), and the water inlet pipe (11) and the water outlet pipe (12) can be connected to a cooling water circulation device.

2. A BMS battery protection device according to claim 1, characterized in that: The rectangular frame (5) on the protective box body (3) is fixedly connected to the protective upper cover (1) and the protective bottom cover (2).

3. A BMS battery protection device according to claim 2, characterized in that: The rectangular frame (5) on the protection box body (3) is provided with two ventilation windows and two installation through holes (7), and a ventilation window protection net (6) is fixedly installed in the ventilation window.

4. A BMS battery protection device according to claim 3, characterized in that: The rectangular cooling plate (9) on the cooling device (4) is in contact with four L-shaped rubber airbags (8), and the rectangular cooling plate (9) is a hollow structure.

5. A BMS battery protection device according to claim 4, characterized in that: The water inlet pipe (11) and the water outlet pipe (12) on the cooling device (4) are respectively fixedly installed in two installation through holes (7) opened on the rectangular frame (5).

6. A BMS battery protection device according to claim 5, characterized in that: The rectangular cooling plate (9) on the cooling device (4) is sleeved on the BMS battery structure (13), and a plurality of ventilation holes (10) are provided on the rectangular cooling plate (9).

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