BMS control panel assembly
By integrating a radial heat pipe network, a composite heat dissipation module, and a safety control circuit into a three-dimensional collaborative design, the problems of insufficient heat dissipation and single safety protection of the BMS control board are solved, achieving efficient heat dissipation and multi-level protection, and improving system reliability and safety.
Patent Information
- Application Number
- CN202520412381.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-10
- Publication Date
- 2026-02-10
- Estimated Expiration
- 2035-03-10
AI Technical Summary
The existing BMS control board components have insufficient heat dissipation performance, leading to the aging and failure of electronic components. Furthermore, the safety protection mechanism is too simple to effectively deal with the fire risk caused by battery overload, short circuit or thermal runaway.
It adopts an integrated radial heat pipe network, a composite heat dissipation module and a safety control circuit, and achieves efficient heat dissipation and multi-level safety protection through three-dimensional collaborative design.
It effectively suppresses the performance degradation of electronic components, provides early warning of thermal runaway risks, constructs a dual protection mechanism, meets fire protection standards, and reduces the size of the heat dissipation system.
Smart Images
Figure CN223899399U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of battery management system technology, and in particular relates to a BMS control board assembly with multiple heat dissipation mechanisms and safety warning functions. Background Technology
[0002] Existing BMS control boards perform core functions in battery management systems, including voltage monitoring, temperature detection, and charge / discharge protection. However, traditional BMS control boards generally suffer from insufficient heat dissipation, which can lead to aging and failure of electronic components due to prolonged high-temperature operation. Furthermore, their safety protection mechanisms are limited and cannot effectively address the fire risks caused by battery overload, short circuit, or thermal runaway. Utility Model Content
[0003] To overcome the shortcomings of existing technologies, this utility model provides a BMS control board assembly that achieves efficient heat dissipation and multi-level safety protection through innovative heat dissipation structure and control logic design.
[0004] To achieve this objective, the present invention adopts the following technical solution:
[0005] A BMS control board assembly, comprising:
[0006] The heat dissipation substrate integrates a radially distributed heat pipe network, wherein the heat absorption end of the heat pipe network is connected to the heat-generating area of the power device, and the heat dissipation end of the heat pipe network extends to the edge of the substrate.
[0007] A composite heat dissipation module includes heat dissipation fins, a fan module, and a flow guide. The heat dissipation fins are disposed on the heat dissipation substrate on the side away from the heat pipe network. The flow guide is disposed above the heat dissipation fins and fixedly connected to the heat dissipation substrate 100. The fan module is disposed in the opening direction of the flow guide.
[0008] The safety control circuit integrates a temperature gradient monitoring unit, a gas detection module, and a multi-stage circuit breaker. The temperature gradient monitoring unit is used to monitor the temperature difference between the batteries, and the gas detection module is used to monitor smoke gas. The multi-stage circuit breaker is connected to the fan module, the temperature gradient monitoring unit, and the gas detection module respectively for heat dissipation protection.
[0009] Furthermore, the heat-absorbing end is a heat-absorbing block, the heat-releasing end is a heat pipe, and the heat pipe is welded to the heat dissipation substrate.
[0010] Furthermore, the air guide is also provided with vent holes, which are located close to the fan module.
[0011] Furthermore, the shroud is made of metal, and the BMS control board assembly also includes a power supply board, on which power devices are attached to the shroud.
[0012] Furthermore, the fan module is equipped with a speed controller so that the speed of the fan module is dynamically adjusted according to the temperature difference data fed back by the temperature gradient monitoring unit.
[0013] Furthermore, the gas detection module includes a CO sensor and a photoelectric smoke sensor, wherein the CO sensor is used to detect carbon monoxide gas; and the photoelectric smoke sensor is used to detect smoke concentration.
[0014] Furthermore, it also includes a control board, on which the multi-stage circuit breaker is disposed, and the control board and the power supply board are fixedly connected by a conduit.
[0015] Compared with the prior art, the present invention has the following beneficial effects:
[0016] It is understandable that this utility model's technical solution, through the three-dimensional collaborative design of a heat dissipation substrate, a composite heat dissipation module, and a safety control circuit, systematically solves the problem of component aging caused by insufficient heat dissipation capacity in traditional BMS control boards, as well as the fire risk caused by a single safety protection mechanism. Specific technical effects are as follows:
[0017] Firstly, the present invention integrates a radial heat pipe network, with its heat dissipation substrate directly connected to the heat-generating area of the power device through the heat absorption end. By utilizing the high-efficiency thermal conductivity of the heat pipe, the traditional single-point passive heat dissipation of the aluminum substrate is transformed into active heat diffusion along the radial path, allowing heat to be quickly conducted from the core area to the edge of the substrate. Combined with the heat dissipation fins in the composite heat dissipation module to expand the heat dissipation area, the forced convection of the fan module, and the directional airflow of the guide shroud, a three-dimensional heat dissipation system with longitudinal heat conduction, lateral radiation, and forced convection is formed, thereby effectively suppressing the performance degradation of electronic components under long-term high temperature.
[0018] Secondly, the safety control circuit of this utility model captures the temperature difference signal between batteries in real time through the temperature gradient monitoring unit (not the traditional single-point temperature monitoring), and provides early warning of the risk of thermal runaway when the temperature difference exceeds a certain range; the gas detection module simultaneously monitors smoke and CO concentration, and combined with the graded response mechanism of the multi-level circuit breaker (temperature difference warning triggers fan speed increase, gas leakage triggers circuit cut-off), it constructs a dual protection of "early intervention in thermal imbalance - rapid isolation of gas leakage", thereby meeting the stringent requirements of fire protection standards.
[0019] Thirdly, the integrated design of the heat dissipation substrate and the composite heat dissipation module breaks through the space limitations of the traditional discrete heat dissipation structure, reducing the size of the heat dissipation system and enhancing its effect. Attached Figure Description
[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0021] The structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.
[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of the BMS control board assembly of this utility model;
[0023] Figure 2 for Figure 1 A structural diagram from another angle;
[0024] Figure 3 The control principle diagram is an embodiment of this utility model;
[0025] Illustration: 100, heat dissipation substrate; 110, heat pipe network; 111, heat absorption end; 112, heat dissipation end;
[0026] 200. Composite heat dissipation module; 210. Heat dissipation fins; 220. Fan module; 230. Air guide shroud; 231. Vent holes;
[0027] 300. Safety control circuit; 310. Temperature gradient monitoring unit; 320. Gas detection module; 330. Multi-stage circuit breaker; 340. Alarm module;
[0028] 400, power supply board; 500, control board; 600, conduit. Detailed Implementation
[0029] To make the technical objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0030] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.
[0031] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.
[0032] This utility model embodiment provides a BMS control board assembly.
[0033] Please see Figure 1 , Figure 2 and Figure 3 In one embodiment of this utility model, the BMS control board assembly includes:
[0034] The heat dissipation substrate 100 integrates a radially distributed heat pipe network 110, wherein the heat absorption end 111 of the heat pipe network 110 is connected to the heat-generating area of the power device, and the heat dissipation end 112 of the heat pipe network 110 extends to the edge of the substrate.
[0035] A composite heat dissipation module 200 includes heat dissipation fins 210, a fan module 220, and a flow guide 230. The heat dissipation fins 210 are disposed on the heat dissipation substrate 100 on the side opposite to the heat pipe network 110. The flow guide 230 is disposed above the heat dissipation fins 210 and fixedly connected to the heat dissipation substrate 100. The fan module 220 is disposed in the opening direction of the flow guide 230.
[0036] The safety control circuit 300 integrates a temperature gradient monitoring unit 310, a gas detection module 320, and a multi-stage circuit breaker 330. The temperature gradient monitoring unit 310 is used to monitor the temperature difference between the batteries, and the gas detection module 320 is used to monitor smoke gas. The multi-stage circuit breaker 330 is connected to the fan module 220, the temperature gradient monitoring unit 310, and the gas detection module 320 respectively for heat dissipation protection.
[0037] It is understood that this utility model's technical solution, through the three-dimensional collaborative design of the heat dissipation substrate 100, the composite heat dissipation module 200, and the safety control circuit 300, systematically solves the problem of component aging caused by insufficient heat dissipation capacity in traditional BMS control boards, as well as the fire risk caused by a single safety protection mechanism. Specific technical effects are as follows:
[0038] In the first aspect, the present invention integrates a radial heat pipe network 110, whose heat dissipation substrate 100 is directly connected to the heat-generating area of the power device through the heat absorption end 111. By utilizing the high-efficiency thermal conductivity of the heat pipe, the single-point passive heat dissipation of the traditional aluminum substrate is transformed into active heat diffusion along the radial path, so that heat can be quickly conducted from the core area to the edge of the substrate. In conjunction with the heat dissipation fins 210 in the composite heat dissipation module 200 to expand the heat dissipation area, the fan module 220 to force convection and the air guide shroud 230 to directional airflow, a three-dimensional heat dissipation system with longitudinal heat conduction, lateral radiation and forced convection is formed, thereby effectively suppressing the performance degradation of electronic components under long-term high temperature.
[0039] Secondly, the safety control circuit 300 of this utility model captures the temperature difference signal between batteries in real time through the temperature gradient monitoring unit 310 (not traditional single-point temperature monitoring), and provides early warning of the risk of thermal runaway when the temperature difference exceeds a certain range; the gas detection module 320 simultaneously monitors smoke and CO concentration, and combined with the graded response mechanism of the multi-level circuit breaker 330 (temperature difference warning triggers fan speed increase, gas leak triggers circuit cut-off), it constructs a dual protection of "early intervention in thermal imbalance - rapid isolation of gas leak", thereby meeting the stringent requirements of fire protection standards.
[0040] Thirdly, the integrated design of the heat dissipation substrate 100 and the composite heat dissipation module 200 breaks through the space limitations of the traditional discrete heat dissipation structure, thereby reducing the size of the heat dissipation system and enhancing its effect.
[0041] In a specific embodiment, the safety control circuit 300 further includes an alarm module 340, which is signal-connected to the multi-level circuit breaker 330 to further enhance the safety protection requirements of the BMS control board assembly.
[0042] Please see Figure 1In one specific embodiment, to achieve better heat dissipation, the flow guide shroud 230 is disposed above the heat dissipation fins 210 and connected to the heat dissipation substrate 100. The number of heat dissipation fins 210 is two sets, with each set positioned at a convection opening of the flow guide shroud 210. It is understood that the flow guide shroud 210 serves two purposes: firstly, it provides heat insulation to prevent baking of the power substrate above the flow guide shroud 210; secondly, positioning the heat dissipation fins 210 at their respective convection openings improves their heat dissipation efficiency.
[0043] Furthermore, in a specific embodiment of this utility model, the heat-absorbing end 111 is a heat-absorbing block, the heat-releasing end 112 is a heat pipe, and the heat pipe is welded to the heat dissipation substrate 100.
[0044] Specifically, the heat-absorbing block is connected to the heat dissipation substrate 100 via a thermally conductive medium. It is understood that the thermally conductive medium serves only as a filler material at the thermal interface; in this application, the thermally conductive medium can be thermally conductive silicone grease, graphene pads, or liquid metal filler, and can also be soldered. Furthermore, the heat-absorbing block is also fixed to the heat dissipation substrate 100 by bolts.
[0045] In this embodiment, the heat absorption end 111 is designed as a block structure, which significantly increases the contact area between the heat pipe and the power device. Combined with the welding process between the heat pipe and the heat dissipation substrate 100, efficient heat transfer from the power device to the heat dissipation substrate 100 is achieved.
[0046] Furthermore, the air guide shroud 230 is also provided with a vent 231, which is located near the fan module 220.
[0047] Understandably, the air deflector 230 can isolate heat, and the ventilation holes 231 provided in the air deflector 230 help dissipate heat from the air deflector 230 itself. Furthermore, the ventilation holes 231 being located close to the fan module 220 can reduce the wind resistance of the fan module 220 and reduce turbulence noise.
[0048] In a preferred embodiment, the shroud 230 is made of metal, and the BMS control board assembly further includes a power supply board 400, on which power devices are attached to the shroud 230.
[0049] It is understandable that when the shroud 230 is made of metal, the direct thermal connection between the metal shroud 230 and the power device creates a low thermal resistance path for the scattering structure of the shroud 230, thereby achieving heat dissipation requirements while saving space.
[0050] Furthermore, in a specific embodiment, the fan module 220 is equipped with a speed controller so that the rotation speed of the fan module 220 is dynamically adjusted according to the temperature difference data fed back by the temperature gradient monitoring unit 310.
[0051] It is understood that the speed controller is used to adjust the speed of the fan module 220, thereby enabling the BMS control board to achieve energy saving and consumption reduction.
[0052] In a specific embodiment, the gas detection module 320 includes a CO sensor and a photoelectric smoke sensor. The CO sensor is used to detect carbon monoxide gas, and the photoelectric smoke sensor is used to detect smoke concentration.
[0053] It is understandable that this embodiment constructs a multi-stage protection system covering the entire cycle of battery thermal runaway through a dual detection mechanism of CO and smoke, further improving the reliability of BMS under complex operating conditions.
[0054] In a preferred embodiment, the BMS control board assembly further includes a control board 500, the multi-stage circuit breaker 330 is disposed on the control board 500, and the control board 500 and the power board 400 are fixedly connected by a conduit 600.
[0055] It is understandable that in some complex application scenarios, the BMS control board assembly has multiple power devices and high-current lines. Therefore, in order to reduce the size of the BMS control board assembly, a control substrate 500 is provided, which is stacked with the power supply substrate 400. Furthermore, the control substrate 500 and the power supply substrate 400 are fixedly connected by a conduit 600, which achieves physical isolation between high and low voltage circuits and also facilitates heat conduction.
[0056] Optionally, the conduit 600 is made of aluminum alloy and has a copper-plated inner wall, so that the heat in the control board 500 can be transferred to the power board 400 through the conduit 600, thereby dispersing the heat and further actively cooling it through the fan module 220.
[0057] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.
Claims
1. A BMS control board assembly, characterized in that, include: A heat dissipation substrate (100) is integrated with a radially distributed heat pipe network (110), wherein the heat absorption end (111) of the heat pipe network is connected to the heat-generating area of the power device, and the heat dissipation end (112) of the heat pipe network extends to the edge of the substrate. A composite heat dissipation module (200) includes heat dissipation fins (210), a fan module (220), and a flow guide (230). The heat dissipation fins (210) are disposed on the heat dissipation substrate (100) on the side opposite to the heat pipe network (110). The flow guide (230) is disposed above the heat dissipation fins (210) and fixedly connected to the heat dissipation substrate (100). The fan module (220) is disposed in the opening direction of the flow guide (230). A safety control circuit (300) is provided, which integrates a temperature gradient monitoring unit (310), a gas detection module (320), and a multi-stage circuit breaker (330). The temperature gradient monitoring unit (310) is used to monitor the temperature difference between the batteries, and the gas detection module (320) is used to monitor smoke gas. The multi-stage circuit breaker (330) is connected to the fan module (220), the temperature gradient monitoring unit (310), and the gas detection module (320) respectively for heat dissipation protection.
2. The BMS control board assembly according to claim 1, characterized in that, The heat-absorbing end (111) is a heat-absorbing block, and the heat-releasing end (112) is a heat pipe. The heat pipe is welded to the heat dissipation substrate (100).
3. The BMS control board assembly according to claim 2, characterized in that, The air guide cover (230) is also provided with a vent (231), which is located near the fan module (220).
4. The BMS control board assembly according to claim 3, characterized in that, The shroud (230) is made of metal. The BMS control board assembly also includes a power board (400), and the power devices on the power board (400) are attached to the shroud (230).
5. The BMS control board assembly according to claim 1, characterized in that, The fan module (220) is equipped with a speed controller so that the rotation speed of the fan module (220) is dynamically adjusted according to the temperature difference data fed back by the temperature gradient monitoring unit (310).
6. The BMS control board assembly according to claim 1, characterized in that, The gas detection module (320) includes a CO sensor and a photoelectric smoke sensor. The CO sensor is used to detect carbon monoxide gas, and the photoelectric smoke sensor is used to detect smoke concentration.
7. The BMS control board assembly according to claim 4, characterized in that, It also includes a control board (500), the multi-stage circuit breaker (330) is disposed on the control board (500), and the control board (500) and the power board (400) are fixedly connected by a conduit (600).