Energy recovery device of energy storage cabinet

Abstract

The utility model belongs to the technical field of heat energy recovery, and particularly discloses an energy storage cabinet energy recovery device which comprises a first heat conduction mechanism, a semiconductor thermoelectric effector and a second heat conduction mechanism, the first heat conduction mechanism is used for transferring heat in air exhausted by a PCS of an energy storage cabinet and / or a liquid cooling host to the hot end of the semiconductor thermoelectric effector, and the second heat conduction mechanism is used for transferring heat in air exhausted by the PCS and / or the liquid cooling host to the hot end of the semiconductor thermoelectric effector. The second heat conduction mechanism is used for transferring heat in external air to the cold end of the semiconductor thermoelectric effect device, and the semiconductor thermoelectric effect device is used for generating a thermoelectric effect according to the temperature difference formed by the hot end and the cold end after absorbing heat of the hot end and the cold end and generating electric energy. According to the energy storage cabinet, waste heat discharged by the PCS and the liquid cooling host in the energy storage cabinet can be collected, the collected waste heat is converted into electric energy through the semiconductor thermoelectric effect device to be recycled, and the efficiency of the energy storage cabinet is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of heat energy recovery, and in particular relates to an energy recovery device for an energy storage cabinet. Background Art

[0002] Energy storage cabinets are devices used to store and release electrical energy. To prevent internal temperatures from overheating during use, they typically incorporate a cooling system to dissipate heat from the PCS (bidirectional converter) and liquid-cooled mainframe. However, existing energy storage cabinets typically dissipate heat directly into the air from the PCS and liquid-cooled mainframe, without heat recovery. This results in heat loss and hinders efficiency. Utility Model Content

[0003] The purpose of the utility model is to provide an energy storage cabinet energy recovery device to solve the above-mentioned problems existing in the prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] The utility model provides an energy storage cabinet energy recovery device, comprising a first heat conducting mechanism, a semiconductor thermoelectric effector, and a second heat conducting mechanism. The first heat conducting mechanism is used to transfer heat in the air exhausted by the PCS and / or liquid-cooled host of the energy storage cabinet to the hot end of the semiconductor thermoelectric effector, and the second heat conducting mechanism is used to transfer heat in the external air to the cold end of the semiconductor thermoelectric effector. The semiconductor thermoelectric effector is used to generate a thermoelectric effect according to the temperature difference formed between the hot end and the cold end after absorbing heat from the hot end and the cold end respectively, thereby generating electrical energy and outputting the electrical energy.

[0006] When used, the heat in the air exhausted by the PCS and / or liquid-cooled host of the energy storage cabinet can be transferred to the hot end of the semiconductor thermoelectric effector through the first heat conduction mechanism, and the heat in the external air can be transferred to the cold end of the semiconductor thermoelectric effector through the second heat conduction mechanism, so that after the semiconductor thermoelectric effector absorbs the heat from the hot end and the cold end respectively, it produces a thermoelectric effect according to the temperature difference formed between the hot end and the cold end, generates electrical energy, and then outputs the electrical energy for storage and backup, or outputs the electrical energy to the electric heating device of the energy storage cabinet for heating the battery core, thereby realizing waste heat recovery and utilization.

[0007] In one possible design, the semiconductor thermoelectric effector includes a semiconductor thermoelectric material layer, on which positive and negative lead wires are provided, the two sides of the semiconductor thermoelectric material layer are respectively a hot end and a cold end, and both the hot end and the cold end of the semiconductor thermoelectric material layer are provided with ceramic sheets.

[0008] In one possible design, a thermally conductive silicone grease layer for transferring heat is provided on a side of the ceramic sheet facing away from the semiconductor thermoelectric material layer.

[0009] In one possible design, the first heat conduction mechanism includes a fin heat exchanger and a hot end radiator, the hot end radiator is connected to the thermal grease layer of the hot end, and the fin heat exchanger and the hot end radiator are connected via a heat pipe.

[0010] In a possible design, the heat pipe is bent and coiled on the fin heat exchanger and the hot end radiator.

[0011] In one possible design, the device further includes a hot-end fan, which is used to blow air exhausted from the PCS and / or liquid-cooled host of the energy storage cabinet toward the fin heat exchanger.

[0012] In one possible design, the second heat conduction mechanism includes a cold end heat sink, which is connected to the thermal grease layer at the cold end.

[0013] In a possible design, the device further includes a cold-end fan, which is used to blow external air toward the cold-end radiator.

[0014] In one possible design, the device further includes a shell, wherein the first heat-conducting mechanism, the semiconductor thermoelectric effector, and the second heat-conducting mechanism are all installed in the shell, and the shell is provided with a hot-end vent and a cold-end vent. The hot-end vent is used to circulate air exhausted from the PCS and / or liquid-cooled host of the energy storage cabinet, and the cold-end vent is used to circulate external air.

[0015] Beneficial effects: The utility model can collect the waste heat emitted by the PCS and liquid-cooled host in the energy storage cabinet, and use semiconductor thermoelectric effect devices to convert the collected waste heat into electrical energy for recycling, thereby improving the efficiency of the energy storage cabinet. At the same time, the device has a simple structure and is easy to install and use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0017] Figure 1 This is a schematic structural diagram of the utility model from the first perspective;

[0018] Figure 2 This is a schematic structural diagram of the utility model from a second viewing angle;

[0019] Figure 3 This is a schematic diagram of the installation of the present utility model.

[0020] In the figure: 1. Hot-end fan; 2. Fin-type heat exchanger; 3. Heat pipe; 4. Shell; 5. Hot-end radiator; 6. Ceramic sheet; 7. Positive and negative lead wires; 8. Cold-end radiator; 9. Cold-end fan; 10. Thermal grease layer; 11. Semiconductor thermoelectric material layer. DETAILED DESCRIPTION

[0021] It should be noted that the description of these embodiments is intended to aid understanding of the present invention and does not constitute a limitation of the present invention. The specific structural and functional details disclosed herein are merely intended to describe exemplary embodiments of the present invention. However, the present invention may be embodied in many alternative forms, and should not be construed as being limited to the embodiments set forth herein.

[0022] It should be understood that, unless otherwise specified or limited, the term "connection" should be understood in a broad sense. For example, it can mean a fixed connection, a detachable connection, or an integral connection; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in the embodiments based on specific circumstances.

[0023] In the following description, certain details are provided to facilitate a complete understanding of the example embodiments. However, one of ordinary skill in the art will appreciate that the example embodiments can be practiced without these specific details. For example, a system may be shown in a block diagram to avoid obscuring the example with unnecessary detail. In other embodiments, well-known processes, structures, and techniques may be shown without unnecessary detail to avoid obscuring the embodiment.

[0024] Example:

[0025] This embodiment provides an energy storage cabinet energy recovery device, such as Figures 1 to 2 As shown, it includes a first heat-conducting mechanism, a semiconductor thermoelectric effector, and a second heat-conducting mechanism. The first heat-conducting mechanism is used to transfer heat in the air exhausted by the PCS and / or liquid-cooled host of the energy storage cabinet to the hot end of the semiconductor thermoelectric effector, and the second heat-conducting mechanism is used to transfer heat in the external air to the cold end of the semiconductor thermoelectric effector. The semiconductor thermoelectric effector is used to generate a thermoelectric effect according to the temperature difference formed between the hot end and the cold end after absorbing heat from the hot end and the cold end respectively, generate electrical energy, and output electrical energy.

[0026] In specific implementation, the heat in the air exhausted by the PCS (bidirectional converter) and / or the liquid-cooled host of the energy storage cabinet can be transferred to the hot end of the semiconductor thermoelectric effector through the first heat conduction mechanism, and the heat in the external air can be transferred to the cold end of the semiconductor thermoelectric effector through the second heat conduction mechanism, so that after the semiconductor thermoelectric effector absorbs the heat from the hot end and the cold end respectively, it produces a thermoelectric effect according to the temperature difference formed between the hot end and the cold end to generate electrical energy, and then outputs the electrical energy for storage and backup, or outputs the electrical energy to the electric heating device of the energy storage cabinet for heating the battery core, thereby realizing waste heat recovery and utilization.

[0027] Furthermore, the semiconductor thermoelectric effector includes a semiconductor thermoelectric material layer 11, on which positive and negative lead wires 7 are provided. The two sides of the semiconductor thermoelectric material layer 11 are respectively a hot end and a cold end, and both the hot end and the cold end of the semiconductor thermoelectric material layer 11 are provided with a ceramic sheet 6. The side of the ceramic sheet 6 facing away from the semiconductor thermoelectric material layer 11 is provided with a thermal conductive silicone grease layer 10 for transferring heat.

[0028] During specific implementation, the heat at the hot end can be transferred to the ceramic sheet 6 at the hot end through the thermal grease layer 10 at the hot end, and the heat at the hot end can be collected to the semiconductor thermoelectric material layer 11 through the ceramic sheet 6 at the hot end, so that the hot end of the semiconductor thermoelectric material layer 11 produces a relatively high temperature; the heat at the cold end can be transferred to the ceramic sheet 6 at the cold end through the thermal grease layer 10 at the cold end, and then the heat at the cold end can be transferred to the semiconductor thermoelectric material layer 11 by the ceramic sheet 6 at the cold end, so that the cold end of the semiconductor thermoelectric material layer 11 produces a relatively low temperature; since the heat at the hot end is much higher than the heat at the cold end, a temperature difference will be formed on both sides of the semiconductor thermoelectric material layer 11, and the semiconductor thermoelectric material layer 11 produces a thermoelectric effect based on the temperature difference on both sides, and the generated electrical energy is output through the positive and negative lead wires 7.

[0029] Furthermore, the first heat transfer mechanism includes a finned heat exchanger 2 and a hot-end radiator 5. The hot-end radiator 5 is connected to a thermal grease layer 10 at the hot end. The finned heat exchanger 2 and the hot-end radiator 5 are connected via a heat pipe 3. The heat pipe 3 is arranged in a curved and coiled manner on the finned heat exchanger 2 and the hot-end radiator 5. The device also includes a hot-end fan 1, which is used to blow air exhausted from the PCS and / or liquid-cooled host of the energy storage cabinet toward the finned heat exchanger 2.

[0030] In practice, the hot-end fan 1 accelerates hot air exhausted from the energy storage cabinet's PCS and / or liquid-cooled mainframe outlets toward the finned heat exchanger 2, raising its temperature. The finned heat exchanger 2 then transfers the heat to the hot-end radiator 5 via the heat pipe 3. Finally, the hot-end radiator 5 transfers the heat to the thermal grease layer 10, achieving efficient heat conduction at the hot end. The finned heat exchanger 2 increases the contact area with the hot air, improving heat conduction efficiency. The heat pipe 3, arranged in a curved and coiled pattern on the finned heat exchanger 2 and the hot-end radiator 5, increases the contact area between the heat pipe 3, the finned heat exchanger 2, and the hot-end radiator 5, also effectively improving heat conduction efficiency. The heat pipe 3 is filled with a phase change medium to achieve excellent heat storage and heat conduction. The hot-end radiator 5 can be made of aluminum, ensuring efficient heat conduction while saving material costs.

[0031] Furthermore, the second heat conduction mechanism includes a cold end radiator 8 connected to the cold end thermal grease layer 10. The device also includes a cold end fan 9, which is used to blow external air toward the cold end radiator 8.

[0032] In practice, the cold-end fan 9 accelerates external air toward the cold-end radiator 8, which then exchanges heat through the cold-end radiator 8 and transfers the cold-end heat to the cold-end thermal grease layer 10, achieving efficient cold-end heat conduction. The cold-end radiator 8 can be a finned aluminum radiator to increase the air contact area, improve heat transfer efficiency, and save costs.

[0033] Furthermore, the device also includes a shell 4, in which the first heat-conducting mechanism, the semiconductor thermoelectric effector and the second heat-conducting mechanism are all installed. The shell 4 is provided with a hot-end vent and a cold-end vent. The hot-end vent is used to circulate the air exhausted by the PCS and / or liquid-cooled host of the energy storage cabinet, and the cold-end vent is used to circulate external air.

[0034] In specific implementation, by installing the first heat conducting mechanism, the semiconductor thermoelectric effector and the second heat conducting mechanism in the housing 4, the compactness can be improved, the control can be saved, and unified installation and use can be facilitated. In addition, the hot end fan 1 can be installed at the hot end vent of the housing 4, and the cold end radiator 8 can be installed at the cold end vent. During installation, if Figure 3 As shown, the housing 4 is installed on the energy storage cabinet so that the hot-end vent of the housing 4 faces the air outlet of the PCS and / or the liquid cooling unit, so that the hot-end fan 1 blows the internal hot air toward the first heat transfer mechanism. The housing 4 can be provided with an isolation cavity to isolate the hot end and the cold end of the device to prevent direct heat exchange between the hot end and the cold end. In addition, corresponding thermal insulation materials can be provided in the housing 4 to prevent the recovered heat from escaping.

[0035] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the scope of protection of the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the scope of protection of the present invention.

Claims

1. An energy storage cabinet energy recovery device, characterized in that: It includes a first heat-conducting mechanism, a semiconductor thermoelectric effector and a second heat-conducting mechanism. The first heat-conducting mechanism is used to transfer the heat in the air exhausted by the PCS and / or liquid-cooled host of the energy storage cabinet to the hot end of the semiconductor thermoelectric effector. The second heat-conducting mechanism is used to transfer the heat in the external air to the cold end of the semiconductor thermoelectric effector. The semiconductor thermoelectric effector is used to absorb the heat from the hot end and the cold end respectively, generate a thermoelectric effect according to the temperature difference formed between the hot end and the cold end, generate electrical energy, and output electrical energy.

2. The energy storage cabinet energy recovery device according to claim 1, characterized in that: The semiconductor thermoelectric effector comprises a semiconductor thermoelectric material layer (11), a positive and negative lead wires (7) are provided on the semiconductor thermoelectric material layer (11), two sides of the semiconductor thermoelectric material layer (11) are respectively a hot end and a cold end, and both the hot end and the cold end of the semiconductor thermoelectric material layer (11) are provided with a ceramic sheet (6).

3. The energy storage cabinet energy recovery device according to claim 2, characterized in that: A thermally conductive silicone grease layer (10) for transferring heat is provided on the side of the ceramic sheet (6) facing away from the semiconductor thermoelectric material layer (11).

4. The energy storage cabinet energy recovery device according to claim 3, characterized in that: The first heat conduction mechanism comprises a finned heat exchanger (2) and a hot end radiator (5), the hot end radiator (5) being connected to a thermally conductive silicone grease layer (10) at the hot end, and the finned heat exchanger (2) and the hot end radiator (5) being connected via a heat pipe (3).

5. The energy storage cabinet energy recovery device according to claim 4, characterized in that: The heat pipe (3) is bent and coiled and arranged on the finned heat exchanger (2) and the hot end radiator (5).

6. The energy storage cabinet energy recovery device according to claim 4, characterized in that: The device further comprises a hot end fan (1), and the hot end fan (1) is used to blow air exhausted from the PCS and / or the liquid cooling host of the energy storage cabinet toward the finned heat exchanger (2).

7. The energy storage cabinet energy recovery device according to claim 3, characterized in that: The second heat-conducting mechanism comprises a cold-end radiator (8), and the cold-end radiator (8) is connected to the heat-conducting silicone grease layer (10) at the cold end.

8. The energy storage cabinet energy recovery device according to claim 7, characterized in that: The device further comprises a cold end fan (9), and the cold end fan (9) is used to blow external air toward the cold end radiator (8).

9. The energy storage cabinet energy recovery device according to claim 1, characterized in that: The device further comprises a shell (4), wherein the first heat conducting mechanism, the semiconductor thermoelectric effector and the second heat conducting mechanism are all mounted in the shell (4), and the shell (4) is provided with a hot end vent and a cold end vent, wherein the hot end vent is used for circulating air exhausted from the PCS and / or the liquid cooling host of the energy storage cabinet, and the cold end vent is used for circulating external air.

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