Industrial and commercial energy storage battery heat management device

Abstract

The utility model discloses a heat management device for industrial and commercial energy storage batteries, which comprises a condensation plate integrated by a dry filter and a condenser assembly, two opposite side plates of a box body are heat dissipation plates, the condensation plate and the heat dissipation plates are arranged in the box body in parallel, the box body is divided into a first area and a second area by the condensation plate, and a fan is arranged in the first area; the second area is sequentially divided into a first sub-area, a second sub-area and a third sub-area in the direction perpendicular to the condensation plate. The control box is arranged in the first sub-area, the inverter compressor and the pressure container are sequentially arranged in the second sub-area, the electronic expansion valve, the plate heat exchanger, the circulating water pump and the PTC heater are sequentially arranged in the third sub-area, and one end of the water return pipe and one end of the water outlet pipe penetrate out of the box body. The device is high in integration level and small in size, fully utilizes the space in the box body, and has the advantages of being large in refrigerating capacity range, high in cooling speed and small in temperature difference range.

Description

Technical Field

[0001] The utility model relates to the technical field of energy storage devices, in particular to a thermal management device for industrial and commercial energy storage batteries. Background Art

[0002] In industrial and commercial or small energy storage cabinets, the heat sources generated by the charging and discharging of battery clusters or battery packs are large, and the most suitable temperature for battery charging and discharging is between ±1°C. Therefore, refrigeration equipment with a large refrigeration capacity range, a fast cooling speed, and a small temperature difference range is required. In addition, the internal space of industrial and commercial energy storage cabinets is limited, and there are relatively high requirements for the space size when assembling the thermal management device for energy storage batteries in a limited space.

[0003] In the prior art, the used thermal management devices for industrial and commercial energy storage batteries are all vertical liquid cooling units, which are relatively large in volume and require a large occupied space, resulting in a relatively large overall size of the industrial and commercial energy storage cabinets.

[0004] Therefore, we need a thermal management device for industrial and commercial energy storage batteries with a large refrigeration capacity range, a fast cooling speed, a small temperature difference range, and a relatively small volume. Summary of the Utility Model

[0005] The utility model provides a thermal management device for industrial and commercial energy storage batteries, which not only has a small volume, but also has the characteristics of a large refrigeration capacity range, a fast cooling speed, and a small temperature difference range.

[0006] To achieve the above object, the utility model adopts the following technical solutions:

[0007] The utility model provides a thermal management device for industrial and commercial energy storage batteries, including a box body, a plate heat exchanger, a variable frequency compressor, a condenser assembly, a drying filter, an electronic expansion valve, a fan, a return water pipe, a pressure vessel, a circulating water pump, a PTC heater, an outlet water pipe, and a control box;

[0008] The plate heat exchanger, the variable frequency compressor, the condenser assembly, the drying filter, and the electronic expansion valve are sequentially connected by fluorine pipes to form a refrigeration cycle loop;

[0009] The return water pipe, the pressure vessel, the circulating water pump, the plate heat exchanger, the PTC heater, and the outlet water pipe are sequentially connected by water pipes to form a water circulation loop;

[0010] The control box is electrically connected to the refrigeration cycle loop and the water circulation loop for controlling the operation of the refrigeration cycle loop and the water circulation loop;

[0011] The drying filter and the condenser assembly are integrated into a condensation plate. Two opposite side plates of the box body are heat dissipation plates. The condensation plate and the heat dissipation plates are arranged in parallel in the box body, and the condensation plate divides the box body into a first area and a second area; the fan is arranged in the first area;

[0012] The second area is sequentially divided into a first sub-area, a second sub-area, and a third sub-area along a direction perpendicular to the condensation plate; the control box is arranged in the first sub-area, the variable-frequency compressor and the pressure vessel are sequentially arranged in the second sub-area, the electronic expansion valve, the plate heat exchanger, the circulating water pump, and the PTC heater are sequentially arranged in the third sub-area, and one ends of the return water pipe and the water outlet pipe penetrate through the box body.

[0013] In a possible implementation manner, in the third sub-area, the circulating water pump and the PTC heater are arranged in parallel and stacked.

[0014] In a possible implementation manner, the box body is a rectangular box body, and two opposite short side plates of the rectangular box body are set as heat dissipation plates.

[0015] In a possible implementation manner, the box body includes a rectangular uncovered box body and a cover plate, and the cover plate is detachably connected to the rectangular uncovered box body.

[0016] In a possible implementation manner, a chute is arranged along the long side direction of the top of the rectangular uncovered box body, and the cover plate is slidably connected to the rectangular uncovered box body through the chute.

[0017] In a possible implementation manner, one of the heat dissipation plates on one side of the box body is detachably connected to the box body, and the control box is slidably connected in the box body along a direction perpendicular to the heat dissipation plate.

[0018] In a possible implementation manner, a suction temperature sensor and a low-pressure pressure sensor are arranged on the fluorine pipe between the plate heat exchanger and the variable-frequency compressor, and an exhaust temperature sensor and a high-pressure pressure sensor are arranged on the fluorine pipe between the variable-frequency compressor and the condenser assembly;

[0019] The suction temperature sensor, the low-pressure pressure sensor, the exhaust temperature sensor, and the high-pressure pressure sensor are all electrically connected to the control box.

[0020] In a possible implementation manner, an ambient temperature sensor is further included;

[0021] The ambient temperature sensor is electrically connected to the control box and is used for collecting the external ambient temperature.

[0022] In a possible implementation, a return water pressure sensor and a return water temperature sensor are arranged on the return water pipe;

[0023] An outlet water pressure sensor and an outlet water temperature sensor are arranged on the outlet water pipe;

[0024] The return water pressure sensor, the return water temperature sensor, the outlet water pressure sensor, and the outlet water temperature sensor are all electrically connected to the control box.

[0025] In a possible implementation, a make-up water pipe is also communicatively connected to the water pipe between the pressure vessel and the return water pipe, and a control valve is arranged on the make-up water pipe.

[0026] The compressor in the refrigeration cycle loop of the industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model adopts a variable frequency compressor, which can increase the refrigeration capacity range of the thermal management device, improve the refrigeration speed and the cooling rate; the variable frequency compressor can also provide a smaller refrigeration demand, maintain low-power operation for a long time, reduce power consumption, and thus reduce the later electricity cost and operation cost.

[0027] When the various devices in the industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model are arranged in the box body, the sizes of the various devices are fully considered, and thus the space in the box body is fully utilized, so that the device has a higher integration degree, a smaller volume, and a lighter weight, meeting the application scenarios of industrial and commercial energy storage.

[0028] Provide a refrigeration operation through the refrigeration cycle loop, and achieve a heating operation through the PTC heater, so as to maintain the release temperature of the heat source at the battery end, and provide the optimal working temperature for the battery cluster or the battery pack, that is, make the battery cluster or the battery pack work within a small temperature difference range. Description of the Drawings

[0029] Figure 1 It is a schematic diagram of the overall structure of an industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model;

[0030] Figure 2 It is a schematic diagram of the internal principle of an industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model;

[0031] Figure 3 It is a schematic diagram of the internal structure of an industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model.

[0032] Reference Signs and Description of the Drawings:

[0033] 11. Cabinet; 111. Heat dissipation plate; 112. Rectangular lidless box body; 113. Cover plate; 12. Plate heat exchanger; 13. Variable frequency compressor; 14. Condenser assembly; 15. Drier filter; 16. Electronic expansion valve; 17. Fan; 18. Return water pipe; 19. Pressure vessel; 20. Circulating water pump; 21. PTC heater; 22. Outlet water pipe; 23. Control box; 24. Condensing plate; 25. Suction temperature sensor; 26. Low pressure pressure sensor; 27. Discharge temperature sensor; 28. High pressure pressure sensor; 29. Ambient temperature sensor; 30. Return water pressure sensor; 31. Return water temperature sensor; 32. Outlet water pressure sensor; 33. Outlet water temperature sensor; 34. Make-up water pipe; 35. Control valve. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0035] Hereinafter, the terms "first" and "second" are only used for descriptive purposes, and cannot be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present disclosure, unless otherwise stated, the meaning of "a plurality" is two or more. Additionally, the use of "based on" or "in accordance with" means open and inclusive, because a process, step, calculation, or other action "based on" or "in accordance with" one or more of the stated conditions or values may in practice be based on additional conditions or values beyond those stated.

[0036] The present invention provides an industrial and commercial energy storage battery thermal management device, which not only has a small volume, but also has the characteristics of a large refrigeration capacity range, a fast cooling speed, and a small temperature difference range.

[0037] As Figures 1 to 3 shown, an industrial and commercial energy storage battery thermal management device includes a cabinet 11, a plate heat exchanger 12, a variable frequency compressor 13, a condenser assembly 14, a drier filter 15, an electronic expansion valve 16, a fan 17, a return water pipe 18, a pressure vessel 19, a circulating water pump 20, a PTC heater 21, an outlet water pipe 22, and a control box 23.

[0038] Among them, the plate heat exchanger 12, the variable frequency compressor 13, the condenser assembly 14, the drier filter 15, and the electronic expansion valve 16 are sequentially connected by fluorine pipes to form a refrigeration cycle loop.

[0039] The return water pipe 18, the pressure vessel 19, the circulating water pump 20, the plate heat exchanger 12, the PTC heater 21 and the water outlet pipe 22 are sequentially connected by water pipes to form a water circulation loop.

[0040] The control box 23 is electrically connected to the refrigeration cycle loop and the water circulation loop, and is used to control the operation of the refrigeration cycle loop and the water circulation loop.

[0041] The drying filter 15 and the condenser assembly 14 are integrated into a condensation plate 24. Two opposite side plates of the box body 11 are heat dissipation plates 111. The condensation plate 24 and the heat dissipation plate 111 are arranged in parallel in the box body 11, and the condensation plate 24 divides the box body 11 into a first region and a second region.

[0042] The fan 17 is arranged in the first region.

[0043] The second region is sequentially divided into a first sub-region, a second sub-region and a third sub-region along the direction perpendicular to the condensation plate 24.

[0044] The control box 23 is arranged in the first sub-region. The variable frequency compressor 13 and the pressure vessel 19 are sequentially arranged in the second sub-region. The electronic expansion valve 16, the plate heat exchanger 12, the circulating water pump 20 and the PTC heater 21 are sequentially arranged in the third sub-region. One ends of the return water pipe 18 and the water outlet pipe 22 penetrate through the box body 11.

[0045] In this embodiment, the box body 11 is divided into a first region on the left side and a second region on the right side by the condensation plate 24. Since only two fans 17 are arranged in the first region and the rest of the devices are arranged in the second region, the volume of the first region is smaller than that of the second region.

[0046] The second region is sequentially divided into a first sub-region, a second sub-region and a third sub-region from front to back. The sizes of the first sub-region, the second sub-region and the third sub-region are determined by the devices arranged inside them, and there are no obvious dividing lines among the three sub-regions.

[0047] The electric control box is arranged in the first sub-region along the length direction of the first sub-region. The variable frequency compressor 13 and the pressure vessel 19 are sequentially arranged in the second sub-region along the length direction of the second sub-region. In order to facilitate the subsequent arrangement of the fluorine pipe and the water pipe, the variable frequency compressor 13 is arranged on the side close to the condensation plate 24. The electronic expansion valve 16, the plate heat exchanger 12, the circulating water pump 20 and the PTC heater 21 are sequentially arranged in the third sub-region along the length direction of the third sub-region.

[0048] In the embodiment of the present utility model, the compressor in the refrigeration cycle circuit of the industrial and commercial energy storage battery thermal management device adopts a variable frequency compressor 13, which can increase the refrigeration capacity range of the thermal management device, improve the refrigeration speed and cooling rate; the variable frequency compressor 13 can also provide a small refrigeration demand, maintain low-power operation for a long time, reduce power consumption, and thus reduce the later electricity cost and operation cost.

[0049] When the various components in the industrial and commercial energy storage battery thermal management device provided by the embodiment of the present utility model are arranged in the box body 11, the sizes of the various components are fully considered, and thus the space in the box body 11 is fully utilized, making the device have a higher integration degree, smaller volume and lighter weight, meeting the application scenarios of industrial and commercial energy storage.

[0050] Refrigeration operation is provided through the refrigeration cycle circuit, and heating operation is realized through the PTC heater 21, so as to maintain the release temperature of the heat source at the battery end, and provide the optimal working temperature for the battery cluster or battery pack, that is, to make the battery cluster or battery pack work within a small temperature difference range (±1°C).

[0051] Furthermore, in order to further reduce the size of the box body 11, in the third sub-region, the circulating water pump 20 and the PTC heater 21 are arranged in parallel and stacked.

[0052] Specifically, since the height of the plate heat exchanger 12 is greater than the sum of the heights of the circulating water pump 20 and the PTC heater 21, and the width of the plate heat exchanger 12 is equivalent to the widths of the circulating water pump 20 and the PTC heater 21, the circulating water pump 20 and the PTC heater 21 are arranged in a stacked manner.

[0053] In this embodiment, the circulating water pump 20 is arranged above the PTC heater 21, and the return water pipe 18 and the water outlet pipe 22 are arranged parallel to each other up and down and pass through the heat dissipation plate 111 on the same side of the box body 11.

[0054] Furthermore, the box body 11 is a rectangular box body, and the two short side plates opposite to each other of the rectangular box body are set as heat dissipation plates 111.

[0055] In this embodiment, the shape of the box body 11 is similar to that of a computer mainframe, and its size is 900 in length * 700 in width * 245 in height, which is close to the size of the battery pack.

[0056] In the prior art, the size of the traditional vertical industrial and commercial energy storage cabinet thermal management unit is 1200 in length * 1100 in width * 275 in height. Compared with the traditional vertical industrial and commercial energy storage cabinet thermal management unit, the volume of the industrial and commercial energy storage battery thermal management device of the present utility model is significantly reduced.

[0057] In one embodiment of the present utility model, the box body 11 includes a rectangular uncovered box body 112 and a cover plate 113, and the cover plate 113 is detachably connected to the rectangular uncovered box body 112.

[0058] Among them, the cover plate 113 and the rectangular lidless box body 112 can be connected by screws; the cover plate 113 can also be fixed on the top of the rectangular lidless box body 112 through mechanisms such as magnetic attraction and buckles; one end of the cover plate 113 can also be hinged to the rectangular lidless box body 112, and the other end can be buckled with the rectangular lidless box body 112.

[0059] Furthermore, a chute is provided along the long side direction of the top of the rectangular lidless box body 112, and the cover plate 113 is slidably connected to the rectangular lidless box body 112 through the chute.

[0060] When it is necessary to repair the internal devices of the box body 11, only by opening the cover plate 113 or sliding out the cover plate 113 can the internal devices of the heat management unit of the industrial and commercial energy storage cabinet be quickly repaired.

[0061] In another embodiment of the present invention, the heat dissipation plate 111 on one side of the box body 11 is detachably connected to the box body 11, and the control box 23 is slidably connected in the box body 11 along the direction perpendicular to the heat dissipation plate 111.

[0062] That is to say, during the repair process, it is not necessary to remove the industrial and commercial energy storage battery thermal management device from the industrial and commercial energy storage cabinet. Only by opening the heat dissipation plate 111 and sliding the control box 23 out of the box body 11 can the repair of the control box 23 be realized.

[0063] Furthermore, an intake air temperature sensor 25 and a low-pressure pressure sensor 26 are provided on the fluorine pipe between the plate heat exchanger 12 and the variable-frequency compressor 13, and an exhaust air temperature sensor 27 and a high-pressure pressure sensor 28 are provided on the fluorine pipe between the variable-frequency compressor 13 and the condenser assembly 14;

[0064] The intake air temperature sensor 25, the low-pressure pressure sensor 26, the exhaust air temperature sensor 27 and the high-pressure pressure sensor 28 are all electrically connected to the control box 23.

[0065] Specifically, the end of the plate heat exchanger 12 connected to the variable-frequency compressor 13 is the low-pressure side, and the end of the variable-frequency compressor 13 connected to the condenser assembly 14 is the high-pressure side.

[0066] The low-pressure pressure sensor 26 and the intake air temperature sensor 25 are arranged on the low-pressure side of the variable-frequency compressor 13, and are respectively used to monitor the pressure and temperature on the low-pressure side; the exhaust air temperature sensor 27 and the high-pressure pressure sensor 28 are arranged on the high-pressure side of the variable-frequency compressor 13, and are respectively used to monitor the temperature and pressure on the high-pressure side.

[0067] Furthermore, the industrial and commercial energy storage battery thermal management device further includes an ambient temperature sensor 29.

[0068] The ambient temperature sensor 29 is electrically connected to the control box 23 and is used to collect the external ambient temperature so as to adjust the operating frequency of the variable-frequency compressor 13 according to the external ambient temperature.

[0069] Furthermore, a return water pressure sensor 30 and a return water temperature sensor 31 are arranged on the return water pipe 18;

[0070] An outlet water pressure sensor 32 and an outlet water temperature sensor 33 are arranged on the outlet water pipe 22;

[0071] The return water pressure sensor 30, the return water temperature sensor 31, the outlet water pressure sensor 32 and the outlet water temperature sensor 33 are all electrically connected to the control box 23.

[0072] Specifically, the pressure at the inlet end of the water circulation loop is monitored by the return water pressure sensor 30, and the temperature at the inlet end of the water circulation loop is monitored by the return water temperature sensor 31; the pressure at the outlet end of the water circulation loop is monitored by the outlet water pressure sensor 32, and the temperature at the outlet end of the water circulation loop is monitored by the outlet water temperature sensor 33.

[0073] Furthermore, a make-up water pipe 34 is also communicated and arranged on the water pipe between the pressure vessel 19 and the return water pipe 18, and a control valve 35 is arranged on the make-up water pipe 34.

[0074] The control valve 35 is used to control the make-up water pipe 34 to supply water to the water circulation loop.

[0075] The industrial and commercial energy storage battery thermal management device of the present utility model is of a horizontal structure, smaller in volume and lighter in weight, and is more suitable for application in industrial and commercial or small energy storage cabinets.

[0076] The industrial and commercial energy storage battery thermal management device of the present utility model not only solves the problems that the existing battery cluster assembly or battery pack has a large heat source during charging and discharging and requires a large intelligent capacity range; but also solves the problems that the battery cluster assembly or battery pack has high requirements for refrigeration efficiency and fast refrigeration speed; and can also provide the most suitable temperature difference range for the battery cluster and the battery pack.

[0077] The detachable setting of the industrial and commercial energy storage battery thermal management device of the present utility model also facilitates the user to repair it.

[0078] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed by the present utility model should be covered by the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the protection scope of the claims.

Claims

1. An industrial and commercial energy storage battery thermal management device, characterized in that, It includes a box body, a plate heat exchanger, a variable-frequency compressor, a condenser assembly, a dryer filter, an electronic expansion valve, a fan, a return water pipe, a pressure vessel, a circulating water pump, a PTC heater, a water outlet pipe, and a control box; The plate heat exchanger, the variable-frequency compressor, the condenser assembly, the dryer filter, and the electronic expansion valve are sequentially connected by fluorine pipes to form a refrigeration cycle loop; The return water pipe, the pressure vessel, the circulating water pump, the plate heat exchanger, the PTC heater, and the water outlet pipe are sequentially connected by water pipes to form a water circulation loop; The control box is electrically connected to the refrigeration cycle loop and the water circulation loop for controlling the operation of the refrigeration cycle loop and the water circulation loop; The dryer filter and the condenser assembly are integrated into a condensation plate. Two opposite side plates of the box body are heat dissipation plates. The condensation plate and the heat dissipation plate are arranged in parallel in the box body. The condensation plate divides the box body into a first area and a second area; the fan is arranged in the first area; The second area is sequentially divided into a first sub-area, a second sub-area, and a third sub-area along the direction perpendicular to the condensation plate; the control box is arranged in the first sub-area, the variable-frequency compressor and the pressure vessel are sequentially arranged in the second sub-area, the electronic expansion valve, the plate heat exchanger, the circulating water pump, and the PTC heater are sequentially arranged in the third sub-area, and one ends of the return water pipe and the water outlet pipe penetrate through the box body.

2. The industrial and commercial energy storage battery thermal management device according to claim 1, wherein In the third sub-area, the circulating water pump and the PTC heater are arranged in parallel and stacked.

3. The industrial and commercial energy storage battery thermal management device according to claim 2, characterized in that, The box body is a rectangular box body, and two opposite short side plates of the rectangular box body are set as heat dissipation plates.

4. The industrial and commercial energy storage battery thermal management device according to claim 3, wherein The box body includes a rectangular uncovered box body and a cover plate, and the cover plate is detachably connected to the rectangular uncovered box body.

5. The thermal management device for industrial and commercial energy storage batteries according to claim 4, characterized in that, A chute is arranged along the long side direction of the top of the rectangular uncovered box body, and the cover plate is slidably connected to the rectangular uncovered box body through the chute.

6. The thermal management device for industrial and commercial energy storage batteries according to claim 1, characterized in that, One of the heat dissipation plates on one side of the box body is detachably connected to the box body, and the control box is slidably connected in the box body along the direction perpendicular to the heat dissipation plate.

7. The thermal management device for industrial and commercial energy storage batteries according to claim 1, characterized in that, An intake air temperature sensor and a low-pressure pressure sensor are arranged on the fluorine pipe between the plate heat exchanger and the variable-frequency compressor, and an exhaust gas temperature sensor and a high-pressure pressure sensor are arranged on the fluorine pipe between the variable-frequency compressor and the condenser assembly; The intake air temperature sensor, the low-pressure pressure sensor, the exhaust gas temperature sensor, and the high-pressure pressure sensor are all electrically connected to the control box.

8. The thermal management device for industrial and commercial energy storage batteries according to claim 1, characterized in that, It also includes an ambient temperature sensor; The ambient temperature sensor is electrically connected to the control box for collecting the external ambient temperature.

9. The thermal management device for industrial and commercial energy storage batteries according to claim 1, wherein A return water pressure sensor and a return water temperature sensor are arranged on the return water pipe; An outlet water pressure sensor and an outlet water temperature sensor are arranged on the water outlet pipe; The return water pressure sensor, the return water temperature sensor, the outlet water pressure sensor, and the outlet water temperature sensor are all electrically connected to the control box.

10. The industrial and commercial energy storage battery thermal management device according to claim 8, wherein A make-up water pipe is also communicated and arranged on the water pipe between the pressure vessel and the return water pipe, and a control valve is arranged on the make-up water pipe.

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