Electronic control driving unit integrated heat dissipation device for fuel cell

Abstract

The utility model discloses an electronic control driving unit integrated heat dissipation device for a fuel cell, which comprises a protective structure box body, an electronic control driving unit is arranged in the protective structure box body, and the electronic control driving unit comprises a heating device; the fuel buffer tank body is provided with a fuel medium inlet and a fuel medium outlet; the fuel medium inlet is used for receiving a low-temperature fuel medium to be preheated, and the fuel medium outlet is used for discharging a preheated high-temperature fuel medium; wherein the fuel buffer box body and the protective structure box body form a heat conduction connecting structure, so that heat generated by the heating device is transmitted into the fuel buffer box body through the heat conduction connecting structure. The fuel cell system efficiency can be improved, the heat pipe level is improved, and the system structure is simplified.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cell accessories, in particular to an integrated heat dissipation device for an electric control drive unit for a fuel cell. Background Art

[0002] A fuel cell system refers to a power generation system that takes a fuel cell as the core and is composed of a fuel supply and circulation system, an oxidant supply system, a water / heat management system, a control system, etc. In addition to the fuel cell body (power generation system), the fuel cell system also has some peripheral devices, including a fuel reforming supply system, an oxygen supply system, a water management system, a thermal management system, a DC-AC inverter system, a control system, a safety system, etc.

[0003] As the core component of the fuel cell system, the electronic control drive unit generates heat during operation (or other components of the system transfer heat), causing a sharp rise in temperature, which reduces its working capacity or even shuts down and damages it. Generally, separate heat dissipation management is required, such as natural convection, air cooling, etc., to ensure that the electronic control system works normally in a suitable temperature environment. However, such heat dissipation structure components and thermal management units (such as Figure 3 As shown, fan drive, etc.) will increase power consumption, resulting in reduced efficiency of the entire fuel cell system, increased noise, and increased system volume.

[0004] Secondly, the common operating temperature of fuel cells currently ranges from 65°C for low-temperature types to 180°C for high-temperature types. If the fuel is not preheated and buffered before entering the system directly, heat loss will occur. Especially when the ambient temperature is low, condensed water may form, causing damage to the system structure such as freezing and cracking or temperature out of control shutdown. Therefore, the fuel needs to be preheated before entering the system. In order to solve these problems, it is often necessary to use a more complex system to preheat and buffer the normal temperature medium, such as electric heating. However, setting up a separate buffer structure for control also has the disadvantages of increasing system power consumption and increasing system volume. Utility Model Content

[0005] In view of the above problems, the present invention provides an integrated heat dissipation device of an electric control drive unit for a fuel cell, which is used to overcome the above problems or at least partially solve the above problems.

[0006] The utility model provides the following solutions:

[0007] An integrated heat dissipation device for an electric control drive unit for a fuel cell, comprising:

[0008] A protective structure box body, wherein an electric control drive unit is arranged in the protective structure box body, and the electric control drive unit includes a heating device;

[0009] A fuel buffer box, wherein the fuel buffer box is provided with a fuel medium inlet and a fuel medium outlet; the fuel medium inlet is used to receive the low-temperature fuel medium to be preheated, and the fuel medium outlet is used to discharge the preheated high-temperature fuel medium;

[0010] The fuel buffer box and the protection structure box form a heat-conducting connection structure, so that the heat generated by the heating device is transferred to the fuel buffer box through the heat-conducting connection structure.

[0011] Preferably, the fuel buffer box is connected to the protective structure box at a position where the heat dissipation path of the heating device is the shortest, or is connected by heat pipe conduction.

[0012] Preferably: the fuel buffer box body is closely connected to the target box plate of the protective structure box body so that the heat dissipation path of the heating element is the shortest, and the heating element is in contact with the target box plate.

[0013] Preferably: the protection structure box body and the fuel buffer box body are formed by an integrated box-type structure separated by a partition; and the heating device abuts against the partition.

[0014] Preferably: a plurality of heat conduction fins are arranged in the fuel buffer box.

[0015] Preferably: the protective structure box body and the fuel buffer box body are both provided with box covers.

[0016] Preferably, the fuel medium includes any one of a gaseous medium and a liquid medium.

[0017] According to the specific embodiments provided by the utility model, the utility model discloses the following technical effects:

[0018] The embodiment of the present application provides an integrated heat dissipation device for an electric drive unit for a fuel cell, which can improve the efficiency of the fuel cell system, improve the level of heat pipes, and simplify the system structure. It can achieve self-balance of heat in the electric drive unit, streamline the heat dissipation structure, optimize the thermal management unit, and preheat and buffer the fuel at the same time, solving the problem of damage to system valves, pipelines and other components that may occur when gas (hydrogen, etc.) or liquid (methanol, etc.) fuel enters the system under low-temperature conditions. It also preheats and buffers the fuel under all-domain conditions, absorbs the waste heat generated by the electric drive unit, reduces system heat loss, greatly improves the working stability of the electric drive unit, increases the working efficiency of the fuel cell system, improves the system volume-to-energy ratio, and optimizes the system heat dissipation management control.

[0019] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 It is a structural schematic diagram of an integrated heat dissipation device for an electric control drive unit for a fuel cell provided by an embodiment of the utility model;

[0022] Figure 2 This is a front view of an integrated heat dissipation device for an electric control drive unit for a fuel cell provided by an embodiment of the utility model;

[0023] Figure 3 It is a schematic diagram of the heat dissipation box solution adopted by existing products.

[0024] In the figure: a protective structure box 1, an electric control drive unit 2, a heating device 21, a fuel buffer box 3, a fuel medium inlet 31, a fuel medium outlet 32, heat conduction fins 33, a box cover 4, and a fan 5. DETAILED DESCRIPTION

[0025] 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 belong to the scope of protection of the utility model.

[0026] See also Figure 1 , Figure 2 , is an integrated heat dissipation device for an electric control drive unit for a fuel cell provided by an embodiment of the utility model, such as Figure 1 , Figure 2 As shown, the device may include:

[0027] A protective structure box 1, wherein an electric control drive unit 2 is arranged in the protective structure box 1, and the electric control drive unit 2 includes a heating device 21;

[0028] A fuel buffer box 3, wherein the fuel buffer box 3 is provided with a fuel medium inlet 31 and a fuel medium outlet 32; the fuel medium inlet 31 is used to receive the low-temperature fuel medium to be preheated, and the fuel medium outlet 32 ​​is used to discharge the preheated high-temperature fuel medium;

[0029] The fuel buffer box 3 and the protection structure box 1 form a heat-conducting connection structure, so that the heat generated by the heating device 21 is transferred to the fuel buffer box 3 through the heat-conducting connection structure.

[0030] The embodiment of the present application provides an integrated heat dissipation device for the electric control drive unit 2 for the fuel cell. The electric control drive unit 2 is installed inside the protective structure box 1. The protective structure box 1 is connected to the fuel buffer box 3 to form a heat-conducting structure. The heat generated by the electric control drive unit 2 will be conducted to the fuel buffer box 3. The low-temperature fuel medium entering the fuel buffer box 3 through the fuel medium inlet will absorb this part of the heat. On the one hand, it can achieve the purpose of cooling the electric control drive unit 2, and at the same time, it can also achieve the purpose of preheating the fuel medium. The device does not need to provide additional components for cooling the electric control drive unit 2 and does not need to provide the heat source required for preheating, thereby achieving the purpose of reducing energy consumption. At the same time, the device does not need to be equipped with components such as fans, so the mute effect is good.

[0031] It is understandable that the fuel buffer box 3 and the protective structure box 1 provided in the embodiment of the present application can be obtained in a variety of ways. For example, in one implementation, the embodiment of the present application can provide that the fuel buffer box 3 and the protective structure box 1 are connected by fitting or by heat pipe conduction at a position where the heat dissipation path of the heating device 21 is the shortest. The connection is made at the position where the heat dissipation path of the heating device 21 is the shortest, which can ensure that the heat generated by the heating device 21 is conducted to the fuel buffer box 3 to the maximum extent, and at the same time, the heat dissipation effect of the electronic control drive unit 2 can be further improved.

[0032] In order to further improve the heat conduction effect, the embodiment of the present application can also provide that the fuel buffer box body 3 is fitted and connected with the target box plate of the protective structure box body 1 to make the heat dissipation path of the heating device 21 as short as possible, and the heating device 21 is in contact with the target box plate.

[0033] In another implementation, the embodiment of the present application may further provide that the protective structure box 1 and the fuel buffer box 3 are formed by an integrated box-type structure separated by a partition; and the heating device 21 is in contact with the partition.

[0034] The protective structure box 1 and the fuel buffer box 3 can be made of metal with strong thermal conductivity (such as aluminum alloy, etc.). The installation design layout of the protective structure box 1 is carried out according to the structure of the electric control drive unit 2 itself. The heat-generating components 21 with large heat dissipation requirements such as power units can be designed in a contact manner to ensure that the heat can be effectively transferred to the protective structure, thereby further transferring the heat to the fuel buffer box 3. The fuel buffer box 3 is generally set at the position where the heat dissipation path of the main heat dissipation components is the shortest, and different numbers of fuel inlet and outlet interfaces are arranged according to the system design.

[0035] In order to further improve the efficiency of the fuel medium absorbing heat, the embodiment of the present application can also provide a plurality of heat conduction fins 33 in the fuel buffer box 3. The plurality of heat conduction fins 33 can increase the contact area with the fuel medium flowing through the fuel buffer box 3 and accelerate heat conduction.

[0036] It is understandable that the fuel buffer box body can add inlet and outlet circuits according to the system design requirements to realize multi-system structure parallel connection; the electronic control drive unit 2 can design the contact between the power and drive chips according to the system design.

[0037] In order to facilitate the inspection or replacement of parts inside each box, the embodiment of the present application can also provide that the protective structure box 1 and the fuel buffer box 3 are both provided with a box cover 4.

[0038] Furthermore, the device provided in the embodiment of the present application is suitable for use with a variety of different forms of fuel media. For example, the embodiment of the present application can provide that the fuel medium includes any one of a gaseous medium and a liquid medium.

[0039] In summary, the integrated heat dissipation device of the electric drive unit for fuel cells provided in this application can improve the efficiency of the fuel cell system, improve the level of heat pipes, and simplify the system structure. It can realize the self-balance of heat of the electric drive unit, streamline the heat dissipation structure, optimize the thermal management unit, and preheat and buffer the fuel at the same time, solving the problem of damage to system valves, pipelines and other components that are prone to occur when gas (hydrogen, etc.) or liquid (methanol, etc.) fuel enters the system under low-temperature conditions, and preheats and buffers the fuel under global operating conditions, absorbs the waste heat generated by the electric drive unit, reduces system heat loss, greatly improves the working stability of the electric drive unit, increases the working efficiency of the fuel cell system, improves the system volume energy ratio, and optimizes the system heat dissipation management control.

[0040] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0041] It can be known from the description of the above implementation methods that those skilled in the art can clearly understand that the present application can be implemented by means of software plus a necessary general hardware platform. Based on such an understanding, the technical solution of the present application can be essentially or partly embodied in the form of a software product that contributes to the prior art. The computer software product can be stored in a storage medium such as ROM / RAM, a magnetic disk, an optical disk, etc., and includes several instructions for enabling a computer device (which can be a personal computer, a server, or a network device, etc.) to execute the methods described in the various embodiments of the present application or certain parts of the embodiments.

[0042] Each embodiment in this specification is described in a progressive manner, and the same or similar parts between the embodiments can refer to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the system or system embodiment, since it is basically similar to the method embodiment, the description is relatively simple, and the relevant parts can refer to the partial description of the method embodiment. The system and system embodiments described above are merely schematic, wherein the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, they may be located in one place, or they may be distributed on multiple network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the scheme of this embodiment. Ordinary technicians in this field can understand and implement it without creative work.

[0043] The above description is only a preferred embodiment of the present invention and is not intended to limit the protection scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.

Claims

1. An integrated heat dissipation device for an electric control drive unit for a fuel cell, characterized in that: include: A protective structure box body, wherein an electric control drive unit is arranged in the protective structure box body, and the electric control drive unit includes a heating device; A fuel buffer box, wherein the fuel buffer box is provided with a fuel medium inlet and a fuel medium outlet; the fuel medium inlet is used to receive the low-temperature fuel medium to be preheated, and the fuel medium outlet is used to discharge the preheated high-temperature fuel medium; The fuel buffer box and the protection structure box form a heat-conducting connection structure, so that the heat generated by the heating device is transferred to the fuel buffer box through the heat-conducting connection structure.

2. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 1, characterized in that: The fuel buffer box is connected to the protective structure box at a position where the heat dissipation path of the heating device is the shortest, or is connected by heat pipe conduction.

3. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 2, characterized in that: The fuel buffer box body is fitted and connected to a target box plate of the protective structure box body so that the heat dissipation path of the heating element is the shortest, and the heating element is in contact with the target box plate.

4. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 1, characterized in that: The protective structure box body and the fuel buffer box body are formed by an integrated box-type structure separated by a partition; the heating device abuts against the partition.

5. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 1, characterized in that: A plurality of heat conduction fins are arranged in the fuel buffer box.

6. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 1, characterized in that: The protective structure box body and the fuel buffer box body are both provided with box covers.

7. The integrated heat dissipation device for an electric control drive unit for a fuel cell according to claim 1, characterized in that: The fuel medium includes any one of a gaseous medium and a liquid medium.

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