BMS board heat dissipation structure and energy storage battery

By adopting the BMS plate heat dissipation structure of the first and second thermal conduction plates in the energy storage battery pack, the heat of the BMS plate is transferred to the air and outside of the shell, and the problem of low heat dissipation efficiency of the BMS plate in the prior art is solved, and better heat dissipation effect and longer service life are achieved.

CN222601126UActive Publication Date: 2025-03-11大秦新能源科技(泰州)有限公司
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Patent Information

Application Number
CN202421212862.6
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-05-30
Publication Date
2025-03-11
Estimated Expiration
2034-05-30

AI Technical Summary

Technical Problem

The BMS board heat dissipation method of the existing energy storage battery pack is inefficient, resulting in excessive internal temperature, shortening service life, and even causing component damage.

Method used

A BMS plate heat dissipation structure including a first thermal conductivity plate and a second thermal conductivity plate is adopted. The two plates are respectively connected to the two sides of the BMS plate and are connected to the shell. The heat is transferred to the air and the outside of the shell through the thermal conductivity plate to achieve rapid heat dissipation.

Benefits of technology

It improves the heat transfer efficiency of the BMS board, achieves rapid heat diffusion, extends the service life of the energy storage battery, and avoids component damage caused by excessive temperature.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model belongs to the technical field of BMS board heat dissipation, and discloses a BMS board heat dissipation structure and an energy storage battery. The BMS plate heat dissipation structure comprises a first heat conduction plate and a second heat conduction plate, one face of the first heat conduction plate abuts against one face of the BMS plate, and one face of the second heat conduction plate abuts against the other face of the BMS plate. Wherein the top of the first heat-conducting plate is connected with the shell, or the top of the second heat-conducting plate is connected with the shell, or both the top of the first heat-conducting plate and the top of the second heat-conducting plate are connected with the shell. The heat of the BMS plate can be transferred to the shell and quickly dissipated to the outside of the shell through the shell, so that the good heat dissipation effect of the BMS plate is achieved, the service life of parts is guaranteed, the structure is simple, and use is convenient. According to the energy storage battery, the heat of the BMS plate is transferred to the air in the shell and the shell through the BMS plate heat dissipation structure, so that a better heat dissipation effect is achieved, and the damage of components in the energy storage battery caused by too high temperature is effectively prevented.
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Description

Technical Field

[0001] The utility model relates to the technical field of BMS board heat dissipation, in particular to a BMS board heat dissipation structure and an energy storage battery. Background Art

[0002] The Battery Management System (BMS) is a device that monitors the status of energy storage batteries. It is mainly used to intelligently manage and maintain each battery unit, prevent overcharging and over-discharging of the battery, extend the battery life, and monitor the battery status. Generally, BMS is a circuit board, namely a BMS board, or a hardware box. The BMS board or BMS protection box is connected to the pack composed of battery cells through sampling lines, nickel sheets, etc., and achieves the purpose of managing the battery pack by real-time monitoring of the system status.

[0003] The heating element of the energy storage battery pack is composed of battery cells and BMS boards. When the energy storage battery pack is working normally, the battery cells and BMS boards will generate heat due to power loss. Among them, the heating of the BMS board is the most harmful, which seriously affects the service life of the product. At present, the common heat dissipation methods of energy storage battery packs on the market are to use fans to blow air to the BMS board and to dissipate heat naturally, but the heat is in the internal space of the product and is not easy to dissipate. The heat dissipation by fan blowing will be limited by the life of the fan, and the natural heat dissipation will cause the internal temperature of the energy storage battery pack to be too high due to the long time, shortening the service life. In severe cases, components will be damaged, making the product unusable and scrapped.

[0004] Therefore, there is an urgent need for a BMS board heat dissipation structure and an energy storage battery to solve the above problems. Utility Model Content

[0005] One purpose of the utility model is to provide a BMS board heat dissipation structure, which can improve the heat transfer efficiency of the BMS board and realize rapid heat diffusion.

[0006] To achieve this purpose, the utility model adopts the following technical solutions:

[0007] A BMS board heat dissipation structure is provided, comprising:

[0008] a first heat conducting plate, wherein one side of the first heat conducting plate abuts against one side of the BMS board;

[0009] a second heat conducting plate, one side of the second heat conducting plate abutting against the other side of the BMS plate;

[0010] Wherein, the top of the first heat conducting plate is connected to the shell;

[0011] And / or, the top of the second heat conducting plate is connected to the shell.

[0012] As an optional solution of the BMS board heat dissipation structure, the first heat conducting plate includes a first connecting portion and a first heat dissipation fin, the first connecting portion abuts against the BMS board, and the first heat dissipation fin is connected to the first connecting portion.

[0013] As an optional solution for the BMS board heat dissipation structure, the second heat conducting plate includes a second connecting portion and a second heat dissipating fin, the second connecting portion abuts against the BMS board, and the second heat dissipating fin is connected to the second connecting portion.

[0014] As an optional solution for the BMS board heat dissipation structure, the top of the first heat conducting plate passes through the shell.

[0015] As an optional solution for the BMS board heat dissipation structure, the top of the second heat conducting plate passes through the shell.

[0016] As an optional solution of the BMS board heat dissipation structure, the BMS board heat dissipation structure further includes a fan, and the fan is located at one side of the BMS board.

[0017] As an optional solution for the BMS board heat dissipation structure, a first ventilation slot is provided on a side of the first heat conducting plate close to the BMS board, and the first ventilation slot extends toward the fan and the top of the first heat conducting plate.

[0018] As an optional solution for the BMS board heat dissipation structure, a second ventilation slot is provided on a side of the second heat conducting plate close to the BMS board, and the second ventilation slot extends toward the fan and the top of the second heat conducting plate.

[0019] Another object of the utility model is to provide an energy storage battery, which can transfer the heat of the BMS board to the shell, so as to realize the rapid diffusion of the heat on the BMS board.

[0020] To achieve this purpose, the utility model adopts the following technical solutions:

[0021] The energy storage battery comprises a BMS board, a shell, a battery module and the above-mentioned BMS board heat dissipation structure, wherein the BMS board, the battery module and the BMS board heat dissipation structure are located in the shell, and the BMS board is signal-connected to the battery module.

[0022] As an optional solution for the energy storage battery, the energy storage battery further includes an indicator light assembly, the indicator light assembly includes an indicator light, and the indicator light is electrically connected to the battery module.

[0023] Beneficial effects of the utility model:

[0024] The utility model provides a BMS board heat dissipation structure, including a first heat conducting plate and a second heat conducting plate, the first heat conducting plate and the second heat conducting plate are respectively abutted against two sides of the BMS board, so that the heat of the BMS board is transferred to the internal air of the energy storage battery through the first heat conducting plate and the second heat conducting plate, thereby accelerating the heat dissipation efficiency of the BMS board. The top of the first heat dissipation plate is connected to the shell, or the second heat conducting plate is connected to the shell, or both the first heat conducting plate and the second heat conducting plate are connected to the shell, so that the heat of the BMS board can be transferred to the shell, and the heat is quickly dissipated to the outside of the shell through the shell, thereby achieving a good heat dissipation effect of the BMS board, ensuring the service life of the parts, and having a simple structure and convenient use.

[0025] The utility model also provides an energy storage battery, which transfers the heat of the BMS board to the air in the shell and the shell through the BMS board heat dissipation structure, thereby achieving a better heat dissipation effect and effectively preventing damage to components in the energy storage battery due to excessive temperature. The structure is simple and easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 This is a structural schematic diagram of the first heat conducting plate of the BMS board heat dissipation structure provided by the utility model;

[0027] Figure 2 It is a structural schematic diagram of the energy storage battery provided by the utility model.

[0028] In the figure:

[0029] 1. First heat conducting plate; 11. First connecting portion; 12. First ventilation slot;

[0030] 2. Second heat conducting plate; 100. BMS plate;

[0031] 200, housing; 210, housing body; 211, motor terminal; 212, signal transmission connector; 213, switch; 220, cover plate; 221, observation hole;

[0032] 300. Battery module;

[0033] 400, indicator light assembly; 410, indicator light; 420, lampshade. DETAILED DESCRIPTION

[0034] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0035] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0037] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0038] like Figure 1 and Figure 2 As shown, the BMS board heat dissipation structure of this embodiment includes a first heat conducting plate 1 and a second heat conducting plate 2, one side of the first heat conducting plate 1 abuts against one side of the BMS board 100, and one side of the second heat conducting plate 2 abuts against the other side of the BMS board 100. The top of the first heat conducting plate 1 is connected to the housing 200, or the top of the second heat conducting plate 2 is connected to the housing 200, or both the tops of the first heat conducting plate 1 and the second heat conducting plate 2 are connected to the housing 200.

[0039] In the heat dissipation structure of the BMS board proposed in this embodiment, the first heat conducting plate 1 and the second heat conducting plate 2 are respectively abutted against the two surfaces of the BMS board 100, so that the BMS board 100 transfers heat to the first heat conducting plate 1 and the second heat conducting plate 2 through two contact surfaces, realizing rapid heat conduction of the BMS board 100, and the first heat conducting plate 1 and the second heat conducting plate 2 further transfer heat to the air, realizing heat dissipation of the BMS board 100. In addition, at least one of the first heat conducting plate 1 and the second heat conducting plate 2 is connected to the shell 200, and can transfer heat to the shell 200, and transfer heat to the outside of the energy storage battery through the shell 200, so that the heat of the BMS board 100 is quickly diffused, achieving a good heat dissipation effect, ensuring the service life of the parts, and having a simple structure and convenient use.

[0040] Furthermore, the BMS board heat dissipation structure also includes a fan, which is arranged on one side of the BMS board 100, the first heat conducting plate 1 and the second heat conducting plate 2. By turning on the fan, air flows on the surfaces of the BMS board 100, the first heat conducting plate 1 and the second heat conducting plate 2, which is beneficial for the BMS board 100, the first heat conducting plate 1 and the second heat conducting plate 2 to transfer heat to the air, thereby improving the cooling effect of the BMS board 100.

[0041] Reference Figure 1 , a first ventilation slot 12 may be provided on one side of the first heat conducting plate 1 close to the BMS board 100, the first ventilation slot 12 extends toward the fan and the top of the first heat conducting plate 1, and a first channel is formed between the first ventilation slot 12 and the BMS board 100, so that air can flow in the first channel, and the BMS board can not only transfer heat to the first heat conducting plate 1, but also transfer heat to the air, further improving the thermal conductivity of the BMS board 100. Of course, the first ventilation slot 12 may also extend in other directions, which is beneficial to the flow of air in the housing 200.

[0042] Furthermore, a second ventilation slot (not shown in the figure) may also be provided on one side of the second heat conducting plate 2 close to the BMS board 100, and the second ventilation slot extends toward the fan and the top of the second heat conducting plate 2. A second channel is formed between the second ventilation slot and the BMS board 100, so that air can flow in the second channel. The BMS board can transfer heat to the air in the second channel while transferring heat to the second heat conducting plate 1, further improving the thermal conductivity of the BMS board 100. Of course, the second ventilation slot may also extend in other directions, which is beneficial to the flow of air in the housing 200.

[0043] Optionally, a first heat dissipation hole may be provided on the top of the shell 100, and the top of the first heat conducting plate 1 may pass through the shell 200 through the first heat dissipation hole, so that the first heat conducting plate 1 can directly contact the air outside the shell 200, thereby realizing that the first heat conducting plate 1 directly transfers heat to the air outside the shell 200, thereby improving the heat dissipation efficiency of the first heat conducting plate 1.

[0044] Optionally, a second heat dissipation hole can be provided on the top of the shell 100, and the top of the second heat conducting plate 2 can pass through the shell 200 through the second heat dissipation hole, so that the second heat conducting plate 2 can directly contact the air outside the shell 200, thereby realizing the second heat conducting plate 2 directly transferring heat to the air outside the shell 200, thereby improving the heat dissipation efficiency of the second heat conducting plate 2.

[0045] Further, the first heat conducting plate 1 includes a first connection portion 11 and a first heat dissipation fin (not shown in the figure), a plurality of first heat dissipation fins are provided, the first connection portion 11 abuts against the BMS board 100, and the first heat dissipation fin is connected to the first connection portion 11, so as to expand the heat dissipation area of ​​the first heat conducting plate 1 and improve the heat dissipation efficiency of the first heat conducting plate 1. In some embodiments, a plurality of first heat dissipation fins are evenly arranged on the top of the first connection portion 11, and the first heat dissipation fins can contact or pass through the housing 200 to transfer heat to the housing 200 and the outside of the housing 200. In some other embodiments, the first heat dissipation fin can also be connected to the side of the first connection portion 11 away from the BMS board 100, and a plurality of first heat dissipation fins are evenly arranged on the first connection portion 11, which is conducive to heat exchange between the first heat conducting plate 1 and the air inside the housing 200.

[0046] Further, the second heat conducting plate 2 includes a second connection portion and a second heat dissipating fin, a plurality of second heat dissipating fins are provided, the second connection portion abuts against the BMS board 100, and the second heat dissipating fins are connected to the second connection portion, so as to expand the heat dissipation area of ​​the second heat conducting plate 2 and improve the heat dissipation efficiency of the second heat conducting plate 2. In some embodiments, a plurality of second heat dissipating fins are evenly arranged on the top of the second connection portion, and the second heat dissipating fins can contact or pass through the housing 200 to transfer heat to the housing 200 and the outside of the housing 200. In some other embodiments, the second heat dissipating fins can also be connected to the side of the second connection portion away from the BMS board 100, and a plurality of second heat dissipating fins are evenly arranged on the second connection portion, which is conducive to heat exchange between the second heat conducting plate and the air inside the housing 200.

[0047] like Figure 2 As shown, this embodiment also provides an energy storage battery, including a BMS board 100, a shell 200, a battery module 300 and the above-mentioned BMS board heat dissipation structure, the BMS board 100, the battery module 300 and the BMS board heat dissipation structure are located in the shell 200, and the BMS board 100 is signal-connected to the battery module 300.

[0048] The energy storage battery transfers the heat of the BMS board to the air in the shell and the shell through the BMS board heat dissipation structure, achieving better heat dissipation effect, effectively preventing the damage of components in the energy storage battery due to excessive temperature, and has a simple structure and is easy to use. The energy storage battery can be hung on the wall or installed on the ground. During production, multiple battery modules 300 are pre-assembled into a whole in the early stage, and then loaded into the shell 200, reducing the assembly line installation steps and improving the production line efficiency.

[0049] Furthermore, the shell 200 includes a shell body 210 and a cover plate 220. The shell body 210 is formed with a receiving cavity. The BMS board 100, the shell 200, the battery module 300 and the BMS board heat dissipation structure are located in the receiving cavity. The cover plate 220 covers the opening of the shell body 210 to prevent foreign matter from entering the receiving cavity.

[0050] Furthermore, the housing body 210 is provided with a motor terminal 211, a signal transmission connector 212 and a switch 213. The motor terminal 211 includes a positive terminal and a negative terminal. The positive terminal is connected to the positive electrode of the battery module 300, and the negative terminal is connected to the negative electrode of the battery module 300. The electrode terminal 211 is used to connect to an external power-consuming device or other energy storage battery to realize the power consumption of the energy storage battery. The signal transmission connector 212 is connected to the BMS board 100 signal, and the signal transmission connector 212 realizes the signal transmission between the inside and the outside of the energy storage battery through an external communication device. In some embodiments, the signal transmission connector 212 can use wireless transmission to transmit signals, which is more convenient and quick. The switch 213 is used to control the opening and closing of the energy storage battery.

[0051] Furthermore, the energy storage battery also includes an indicator light assembly 400, which includes an indicator light 410 and a lampshade 420. The indicator light 410 is located in the accommodating cavity and is electrically connected to the battery module 300. The lampshade 420 is connected to the cover plate 220 and corresponds to the position of the indicator light 410. The indicator light 410 displays different contents, and the working state of the energy storage battery can be observed. The lampshade 420 can protect the indicator light 410 and make the light of the indicator light 410 more evenly scattered through refraction.

[0052] Optionally, the cover plate 220 is provided with an observation hole 221 , and the lampshade 420 is installed correspondingly at the observation hole 221 , so that the indicator light 410 can be directly observed through the observation hole 221 , thereby avoiding the need to frequently open the cover plate 220 when observing the indicator light 410 .

[0053] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the implementation methods of the present invention. For those skilled in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. A BMS board heat dissipation structure, characterized in that: include: A first heat conducting plate (1), one side of the first heat conducting plate (1) being in contact with one side of the BMS plate (100); A second heat conducting plate (2), one surface of the second heat conducting plate (2) being in contact with the other surface of the BMS plate (100); Wherein, the top of the first heat conducting plate (1) is connected to the housing (200); And / or, the top of the second heat conducting plate (2) is connected to the shell (200).

2. The BMS board heat dissipation structure according to claim 1, characterized in that: The first heat conducting plate (1) comprises a first connecting portion (11) and a first heat dissipation fin, the first connecting portion (11) abuts against the BMS board (100), and the first heat dissipation fin is connected to the first connecting portion (11).

3. The BMS board heat dissipation structure according to claim 1, characterized in that: The second heat conducting plate (2) comprises a second connecting portion and a second heat dissipation fin, the second connecting portion abuts against the BMS board (100), and the second heat dissipation fin is connected to the second connecting portion.

4. The BMS board heat dissipation structure according to claim 1, characterized in that: The top of the first heat conducting plate (1) passes through the shell (200).

5. The BMS board heat dissipation structure according to claim 1, characterized in that: The top of the second heat conducting plate (2) passes through the shell (200).

6. The BMS board heat dissipation structure according to claim 1, characterized in that: The BMS board heat dissipation structure further comprises a fan, and the fan is located on one side of the BMS board (100).

7. The BMS board heat dissipation structure according to claim 6, characterized in that: A first ventilation slot (12) is provided on a side of the first heat conducting plate (1) close to the BMS plate (100), and the first ventilation slot (12) extends toward the fan and the top of the first heat conducting plate (1).

8. The BMS board heat dissipation structure according to claim 6, characterized in that: A second ventilation slot is provided on a side of the second heat conducting plate (2) close to the BMS plate (100), and the second ventilation slot extends toward the fan and the top of the second heat conducting plate (2).

9. An energy storage battery, comprising a BMS board (100), a housing (200) and a battery module (300), characterized in that: The energy storage battery further comprises a BMS board heat dissipation structure as claimed in any one of claims 1 to 8, wherein the BMS board (100), the battery module (300) and the BMS board heat dissipation structure are located within the housing (200), and the BMS board (100) is signal-connected to the battery module (300).

10. The energy storage battery according to claim 9, characterized in that: The energy storage battery further comprises an indicator light assembly (400), wherein the indicator light assembly (400) comprises an indicator light (410), and the indicator light (410) is electrically connected to the battery module (300).