Temperature control device of fuel cell

Abstract

The utility model relates to the technical field of fuel cells, in particular to a temperature control device of a fuel cell. Comprising a fuel battery pack, a lithium battery pack and an auxiliary assembly, the auxiliary assembly comprises a first electric control valve, a first guide pipe, a second guide pipe, a first temperature sensor, a one-way valve, a conveying component and a self-discharging component, and during work, high-temperature tail gas generated during work of the fuel battery pack is conveyed into the lithium battery pack through the conveying component; cooler airflow in the lithium battery pack can pass through the first electric control valve on one side, the first guide pipe, the one-way valve, the second guide pipe and the first electric control valve on the other side to lead to the fuel battery pack, circulating convection is formed, uniform heating of the lithium battery pack is achieved, too high local heating of the lithium battery pack is avoided, circulating convection can be formed during use, and the service life of the lithium battery pack is prolonged. Uniform heating of the lithium battery pack is facilitated, overhigh local heating of the lithium battery pack is avoided, and use is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel cells, in particular to a temperature control device for a fuel cell. Background Art

[0002] At present, the combustion chamber and reforming chamber in the fuel cell stack module will produce high-temperature exhaust gas. In order to recycle it, the high-temperature exhaust gas is mostly used for heating the lithium battery pack.

[0003] Prior art CN205632164U discloses a temperature control system for a power system including a fuel cell and a lithium battery. The prior art utilizes the high-temperature exhaust gas of the fuel cell stack module to heat the lithium battery stack. The combustion chamber and the reforming chamber in the fuel cell stack module will produce high-temperature exhaust gas, and the battery stack will also generate a certain amount of heat when used to generate electricity. The high-temperature exhaust gas exhaust pipe is respectively connected to a waste heat recycling pipe and a bypass pipe that can heat the lithium battery pack. The function of the bypass pipe is to directly discharge the high-temperature exhaust gas in summer without passing through the waste heat recycling pipe. The temperature sensor arranged in the lithium battery stack module can detect the temperature of the lithium battery stack module and determine whether the lithium battery stack needs to be heated, thereby controlling the first air valve and the second air valve to determine the technical effect of which pipe the high-temperature exhaust gas passes through.

[0004] However, when the temperature control system of the above-mentioned power system including a fuel cell and a lithium battery is actually used, there is no return air pipe on the lithium battery pack module side that can play a reflux role. The high-temperature exhaust gas entering the lithium battery pack module cannot form circulating convection at the lithium battery pack module, which reduces the heating effect of the high-temperature exhaust gas. In severe cases, it will cause the lithium battery pack module to be locally overheated, and even the service life of the lithium battery pack module will be reduced, which is inconvenient to use. Utility Model Content

[0005] The utility model aims to provide a temperature control device for a fuel cell, which can form circulating convection when in use, so as to achieve uniform heating of a lithium battery pack, avoid local overheating of the lithium battery pack, and be more convenient to use.

[0006] To achieve the above object, the utility model provides a temperature control device for a fuel cell, comprising a fuel cell group and a lithium battery group, wherein the lithium battery group is located on one side of the fuel cell group, and further comprising an auxiliary component;

[0007] The auxiliary component includes a first electrically controlled valve, a first conduit, a second conduit, a first temperature sensor, a one-way valve, a conveying member and a self-draining member. The first electrically controlled valve is fixedly connected to the lithium battery group and the fuel cell group, respectively, and is located at the bottom of the lithium battery group and the fuel cell group, respectively. The first conduit is detachably connected to the first electrically controlled valve and is located at a side of the first electrically controlled valve close to the lithium battery group. The second conduit is detachably connected to the first electrically controlled valve and is located at a side of the first electrically controlled valve close to the fuel cell group. The first temperature sensor is fixedly connected to the second conduit and is located on the second conduit. The one-way valve is detachably connected to the first conduit and the second conduit, respectively, and is located between the first conduit and the second conduit. The conveying member is arranged on a side of the fuel cell group close to the lithium battery group, and the self-draining member is arranged on the top of the fuel cell group.

[0008] Wherein, the conveying component includes a first conveying pipe, a second conveying pipe and a control component, the first conveying pipe is detachably connected to the fuel cell group and is located on the top of the fuel cell group; the second conveying pipe is detachably connected to the lithium battery group and is located on the top of the lithium battery group; the control component is arranged between the first conveying pipe and the second conveying pipe.

[0009] Wherein, the control component includes a second electrically controlled valve and a filter, the second electrically controlled valve is detachably connected to the first delivery pipe and is located on a side of the first delivery pipe close to the second delivery pipe; the filter is detachably connected to the second electrically controlled valve and is detachably connected to the second delivery pipe and is located on a side of the second electrically controlled valve close to the second delivery pipe.

[0010] Among them, the self-draining component includes a self-draining electric control valve and a dustproof net, the self-draining electric control valve is detachably connected to the fuel cell group and is located on the top of the fuel cell group; the dustproof net is fixedly connected to the self-draining electric control valve and is located on the self-draining electric control valve.

[0011] Wherein, the auxiliary component also includes a second temperature sensor and a third temperature sensor, the second temperature sensor is fixedly connected to the first delivery pipe and is located on the first delivery pipe; the third temperature sensor is fixedly connected to the second delivery pipe and is located on the second delivery pipe.

[0012] The utility model discloses a temperature control device for a fuel cell, wherein a lithium battery pack is arranged at one side of the fuel cell pack, a first electrically controlled valve is arranged at the bottom of the lithium battery pack and the fuel cell pack respectively, a first conduit and a second conduit are connected to the first electrically controlled valve respectively, a first temperature sensor is installed on the second conduit, a one-way valve is detachably connected to the first conduit and the second conduit respectively, a conveying component is arranged at a side of the fuel cell pack close to the lithium battery pack, and a self-draining component is arranged at the top of the fuel cell pack. When working, high-temperature exhaust gas generated by the operation of the fuel cell pack is conveyed into the lithium battery pack through the conveying component. At this time, when the high-temperature gas is passed to the lithium battery pack, a relatively cold airflow in the lithium battery pack can be passed to the fuel cell pack through the first electrically controlled valve, the first conduit, the one-way valve, the second conduit on one side and the first electrically controlled valve on the other side, forming a circulating convection, realizing uniform heating at the lithium battery pack, avoiding local overheating of the lithium battery pack, and then realizing that when in use, circulating convection can be formed, which is conducive to realizing uniform heating of the lithium battery pack, avoiding local overheating of the lithium battery pack, and being more conducive to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0014] Figure 1 It is a schematic diagram of the overall structure of the temperature control device for a fuel cell according to the first embodiment of the utility model.

[0015] Figure 2 It is a schematic diagram of the installation position of the dustproof net of the first embodiment of the utility model.

[0016] Figure 3 It is a schematic diagram of the overall structure of a temperature control device for a fuel cell according to a second embodiment of the utility model.

[0017] In the figure: 101-fuel cell group, 102-lithium battery group, 103-first electric control valve, 104-first conduit, 105-second conduit, 106-first temperature sensor, 107-one-way valve, 108-first delivery pipe, 109-second delivery pipe, 110-second electric control valve, 111-filter, 112-self-draining electric control valve, 113-dustproof net, 201-second temperature sensor, 202-third temperature sensor. DETAILED DESCRIPTION

[0018] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0019] Embodiment 1:

[0020] like Figure 1 and Figure 2 As shown, Figure 1 It is a schematic diagram of the overall structure of the temperature control device of the fuel cell. Figure 2 It is a schematic diagram of the installation position of the dustproof net 113. The utility model provides a temperature control device for a fuel cell: including a fuel cell group 101, a lithium battery group 102 and an auxiliary component, the auxiliary component includes a first electric control valve 103, a first conduit 104, a second conduit 105, a first temperature sensor 106, a one-way valve 107, a conveying component and a self-draining component, the conveying component includes a first conveying pipe 108, a second conveying pipe 109 and a control component, the control component includes a second electric control valve 110 and a filter 111, and the self-draining component includes a self-draining electric control valve 112 and a dustproof net 113. Through the above scheme, it can be achieved that when in use, a circulating convection can be formed, which is conducive to achieving uniform heating of the lithium battery group 102, avoiding local overheating of the lithium battery group 102, and being more conducive to use. It can be understood that the above scheme can be conducive to achieving uniform heating of the lithium battery group 102, avoiding local overheating of the lithium battery group 102, and being more conducive to use.

[0021] In this embodiment, the lithium battery group 102 is located on one side of the fuel cell group 101. The combustion chamber and the reforming chamber in the fuel cell group 101 will produce high-temperature exhaust gas, and the battery stack will also generate a certain amount of heat when used to generate electricity.

[0022] The first electrically controlled valve 103 is fixedly connected to the lithium battery pack 102 and the fuel cell pack 101, respectively, and is located at the bottom of the lithium battery pack 102 and the fuel cell pack 101, respectively; the first conduit 104 is detachably connected to the first electrically controlled valve 103, and is located at a side of the first electrically controlled valve 103 close to the lithium battery pack 102; the second conduit 105 is detachably connected to the first electrically controlled valve 103, and is located at a side of the first electrically controlled valve 103 close to the fuel cell pack 101; the first temperature sensor 106 is fixedly connected to the second conduit 105, and is located on the second conduit 105; the one-way valve 107 is detachably connected to the first conduit 104 and the second conduit 105, respectively, and is located between the first conduit 104 and the second conduit 105; the conveying member is arranged on a side of the fuel cell pack 101 close to the lithium battery pack 102; and the self-draining member is arranged on the top of the fuel cell pack 101. The first electrically controlled valve 103 is respectively mounted on the lithium battery pack 102 and the fuel cell pack 101 by bolts, the inlet connecting flange of the first conduit 104 is connected to the outlet connecting flange of the first electrically controlled valve 103 on the lithium battery pack 102 by bolts, the outlet connecting flange of the second conduit 105 is connected to the inlet connecting flange of the first electrically controlled valve 103 on the fuel cell pack 101 by bolts, the connecting flanges on both sides of the one-way valve 107 are respectively connected to the outlet connecting flange of the first conduit 104 and the inlet connecting flange of the second conduit 105 by screws and nuts, so as to form a one-way reflux channel, the first temperature sensor 106 is fixed to the second conduit 105 by bolts, and is used to monitor the temperature of the reflux airflow, the conveying member is arranged on the side of the fuel cell pack 101 close to the lithium battery pack 102, and is used to convey the high-temperature exhaust gas generated by the fuel cell pack 101 to the lithium battery pack 102 for heating and reuse, and the self-discharging member is arranged on the top of the fuel cell pack 101, and is used for the fuel cell pack 101 to exhaust itself when the lithium battery pack 102 is not heated.

[0023] Secondly, the first delivery pipe 108 is detachably connected to the fuel cell stack 101 and is located at the top of the fuel cell stack 101; the second delivery pipe 109 is detachably connected to the lithium battery stack 102 and is located at the top of the lithium battery stack 102; the control component is arranged between the first delivery pipe 108 and the second delivery pipe 109. The mounting flange of the first delivery pipe 108 is mounted on the fuel cell stack 101 by bolts, and the mounting flange of the second delivery pipe 109 is mounted on the lithium battery stack 102 by bolts. The control component is arranged between the first delivery pipe 108 and the second delivery pipe 109 for on-off control.

[0024] Then, the second electrically controlled valve 110 is detachably connected to the first delivery pipe 108 and is located at the side of the first delivery pipe 108 close to the second delivery pipe 109; the filter 111 is detachably connected to the second electrically controlled valve 110 and is detachably connected to the second delivery pipe 109 and is located at the side of the second electrically controlled valve 110 close to the second delivery pipe 109. The mounting flange of the second electrically controlled valve 110 is connected to the outlet flange of the first delivery pipe 108 through a screw nut, the mounting flange of the filter 111 is connected to the outlet side flange of the second electrically controlled valve 110 through a screw nut, and the connecting flange of the filter 111 is connected to the connecting flange of the second delivery pipe 109 through a screw nut.

[0025] Finally, the self-draining electric control valve 112 is detachably connected to the fuel cell stack 101 and is located on the top of the fuel cell stack 101; the dustproof net 113 is fixedly connected to the self-draining electric control valve 112 and is located on the self-draining electric control valve 112. The self-draining electric control valve 112 is mounted on the fuel cell stack 101 by bolts, and the dustproof net 113 is fixed to the outside of the exhaust port of the self-draining electric control valve 112 by bolts.

[0026] The utility model forms a circulating convection when in use, which is conducive to achieving uniform heating of the lithium battery pack 102, avoiding overheating of the lithium battery pack 102 locally, and is more conducive to use. When working, the high-temperature exhaust gas generated by the fuel cell group 101 is discharged through the first delivery pipe 108. After the second electric control valve 110 is opened, the high-temperature exhaust gas is filtered by the filter 111 and then sent to the lithium battery pack 102 for heating. At the same time, when the high-temperature gas is passed to the lithium battery pack 102, the relatively cold air flow in the lithium battery pack 102 can be opened by the first electric control valve 103 on one side, and then passes through the first conduit 104, the second electric control valve 110, and the second electric control valve 111. The one-way valve 107, the second conduit 105 and the first electrically controlled valve 103 on the other side are opened to the fuel cell group 101, forming a circulating convection, achieving uniform heating of the lithium battery group 102, and preventing the lithium battery group 102 from being locally overheated. When heating is not required, the first electrically controlled valve 103 is closed, the second electrically controlled valve 110 is closed, and the self-exhaust electric valve 112 is opened, so that the high-temperature exhaust gas generated by the fuel cell group 101 can be discharged, thereby forming a circulating convection when in use, which is beneficial to achieving uniform heating of the lithium battery group 102, preventing the lithium battery group 102 from being locally overheated, and being more convenient to use.

[0027] Embodiment 2:

[0028] like Figure 3 As shown, Figure 3is a schematic diagram of the overall structure of the temperature control device for a fuel cell. On the basis of the first embodiment, the utility model provides a temperature control device for a fuel cell, wherein the auxiliary component further includes a second temperature sensor 201 and a third temperature sensor 202 .

[0029] The second temperature sensor 201 is fixedly connected to the first delivery pipe 108 and is located on the first delivery pipe 108; the third temperature sensor 202 is fixedly connected to the second delivery pipe 109 and is located on the second delivery pipe 109. The second temperature sensor 201 is fixed to the first delivery pipe 108 by bolts, and the third temperature sensor 202 is fixed to the second delivery pipe 109 by bolts.

[0030] In this embodiment, the second temperature sensor 201 is provided to detect the temperature of the transported gas in the first transport pipe 108, and the third temperature sensor 202 is provided to detect the temperature of the transported gas in the second transport pipe 109, thereby increasing the detection points of the device and improving the accuracy of temperature detection.

[0031] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A temperature control device for a fuel cell, comprising a fuel cell group and a lithium battery group, wherein the lithium battery group is located on one side of the fuel cell group, characterized in that: Also included are auxiliary components; The auxiliary component includes a first electrically controlled valve, a first conduit, a second conduit, a first temperature sensor, a one-way valve, a conveying member and a self-draining member. The first electrically controlled valve is fixedly connected to the lithium battery group and the fuel cell group, respectively, and is located at the bottom of the lithium battery group and the fuel cell group, respectively. The first conduit is detachably connected to the first electrically controlled valve and is located at a side of the first electrically controlled valve close to the lithium battery group. The second conduit is detachably connected to the first electrically controlled valve and is located at a side of the first electrically controlled valve close to the fuel cell group. The first temperature sensor is fixedly connected to the second conduit and is located on the second conduit. The one-way valve is detachably connected to the first conduit and the second conduit, respectively, and is located between the first conduit and the second conduit. The conveying member is arranged on a side of the fuel cell group close to the lithium battery group, and the self-draining member is arranged on the top of the fuel cell group.

2. The temperature control device for a fuel cell according to claim 1, wherein: The conveying component includes a first conveying pipe, a second conveying pipe and a control component. The first conveying pipe is detachably connected to the fuel cell group and is located on the top of the fuel cell group; the second conveying pipe is detachably connected to the lithium battery group and is located on the top of the lithium battery group; the control component is arranged between the first conveying pipe and the second conveying pipe.

3. The temperature control device for a fuel cell according to claim 2, characterized in that: The control component includes a second electrically controlled valve and a filter. The second electrically controlled valve is detachably connected to the first delivery pipe and is located on a side of the first delivery pipe close to the second delivery pipe. The filter is detachably connected to the second electrically controlled valve and is detachably connected to the second delivery pipe and is located on a side of the second electrically controlled valve close to the second delivery pipe.

4. The temperature control device for a fuel cell according to claim 1, wherein: The self-draining component includes a self-draining electric control valve and a dustproof net. The self-draining electric control valve is detachably connected to the fuel cell group and is located on the top of the fuel cell group; the dustproof net is fixedly connected to the self-draining electric control valve and is located on the self-draining electric control valve.

5. The temperature control device for a fuel cell according to claim 2, wherein: The auxiliary component also includes a second temperature sensor and a third temperature sensor. The second temperature sensor is fixedly connected to the first delivery pipe and is located on the first delivery pipe; the third temperature sensor is fixedly connected to the second delivery pipe and is located on the second delivery pipe.

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