Heat pump module and battery electrode coating system

Abstract

The utility model relates to a heat pump module and a battery electrode coating system, and belongs to the technical field of waste gas recycling, the heat pump module is applied to a coating and recycling integrated drying oven, and the coating and recycling integrated drying oven comprises a coating drying oven module and a heat exchange recycling module fixed to the coating drying oven module; the heat pump module comprises an evaporative condenser, a refrigerant preparation module and a heating medium preparation module. According to the heat pump module and the battery electrode coating system, the heat pump module comprises the evaporative condenser, the refrigerant preparation module and the heating medium preparation module, the refrigerant preparation module and the heating medium preparation module share one evaporative condenser, and an independent refrigerant preparation device and an independent heating medium preparation device do not need to be arranged for the coating and recycling integrated oven; the integration level and the attractiveness of the battery electrode coating system are improved, laying of pipelines is reduced as much as possible, the space utilization rate is improved, and the cost is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of waste gas recovery, and in particular to a heat pump module and a battery electrode coating system. Background Art

[0002] In the field of lithium battery manufacturing technology, a large amount of high-temperature waste gas is generated during the coating and drying process of the positive electrode coating machine. The waste gas contains harmful volatile organic compounds such as NMP, so an NMP recovery system is required to recover and treat NMP. The recovered NMP waste liquid is packaged and sent to a qualified chemical plant for processing. After processing, a high-purity NMP finished product is obtained. At the same time, the treated NMP waste gas is discharged into the air after meeting environmental protection requirements. The existing NMP waste gas recovery process usually connects a heat exchange system outside the coating oven to recover waste heat and exhaust gas treatment, resulting in pipes everywhere in the production site, reducing the space utilization and aesthetics of the production site. Utility Model Content

[0003] Based on this, it is necessary to provide a heat pump module and a battery electrode coating system to solve the technical problems of low space utilization and poor aesthetics of battery electrode production sites existing in the prior art.

[0004] To this end, according to one aspect of the present application, a heat pump module is provided, which is applied to a coating and recovery integrated oven, the coating and recovery integrated oven comprising a coating oven module and a heat exchange recovery module fixed on the coating oven module, the heat pump module comprising:

[0005] Evaporative condenser;

[0006] The refrigerant preparation module includes a circulation evaporator, a first compressor and a first expansion valve, a first circulation flow path is formed between the circulation evaporator and the heat exchange recovery module, and the circulation evaporator, the first compressor, the evaporative condenser and the first expansion valve are connected in sequence to form a third circulation flow path;

[0007] The heat medium preparation module includes a circulating condenser, a second expansion valve and a second compressor. A second circulating flow path is formed between the circulating condenser and the heat exchange recovery module. The circulating condenser, the second expansion valve, the evaporative condenser and the second compressor are connected in sequence to form a fourth circulating flow path. The third circulating flow path and the fourth circulating flow path exchange heat through the evaporative condenser.

[0008] Optionally, the refrigerant in the first circulation flow path is chilled water.

[0009] Optionally, the heat medium in the second circulation flow path is heat transfer oil or high-temperature hot water.

[0010] Optionally, an evaporative condenser, a refrigerant preparation module and a heat medium preparation module form a heat pump unit, and the heat pump module includes a plurality of heat pump units.

[0011] Optionally, the heat pump module further includes a high-temperature cache tank, which is disposed between the inlet of the heat medium preparation module and the heat exchange recovery module, and is used to cache and keep the heat medium in the second circulation flow path.

[0012] Optionally, the heat pump module further includes a fluid replenishing device connected to the high-temperature cache tank, and the fluid replenishing device is used to replenish heat medium into the high-temperature cache tank.

[0013] Optionally, the heat pump module further includes a low-temperature cache tank, which is disposed between the inlet of the refrigerant preparation module and the heat exchange recovery module, and is used to cache and keep the refrigerant in the first circulation flow path warm.

[0014] Optionally, the heat pump module further includes an auxiliary refrigeration unit, which is arranged between the outlet of the refrigerant preparation module and the heat exchange recovery module.

[0015] Optionally, both the first circulation flow path and the second circulation flow path are provided with a pump body.

[0016] According to another aspect of the present application, a battery electrode coating system is provided, which includes a coating and recovery integrated oven, an exhaust gas treatment module and a heat pump module as described above, the heat pump module is used to provide refrigerant and heat medium for the coating and recovery integrated oven, and the exhaust gas treatment module is used to receive and process the exhaust gas discharged from the coating and recovery integrated oven.

[0017] The beneficial effects of the heat pump module and battery electrode coating system provided by the present application are as follows: compared with the prior art, the heat pump module of the present application is applied to a coating and recovery integrated oven, the coating and recovery integrated oven includes a coating oven module and a heat exchange recovery module fixed on the coating oven module, the heat pump module includes an evaporative condenser, a refrigerant preparation module and a heat medium preparation module, the refrigerant preparation module and the heat medium preparation module share an evaporative condenser, and there is no need to equip the coating and recovery integrated oven with a separate refrigerant preparation device and a separate heat medium preparation device, which improves the integration and aesthetics of the battery electrode coating system, minimizes the laying of pipelines, improves space utilization and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] 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 will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A schematic diagram of the structure of a battery electrode coating system provided in an embodiment of the present application;

[0020] Figure 2 A schematic diagram of the structure of a coating and recycling integrated oven having only a first heater for a battery electrode coating system provided in an embodiment of the present application;

[0021] Figure 3 Schematic diagram of the structure of the coating and recycling integrated oven with the first heater and the second heater of the battery electrode coating system provided in the embodiment of the present application Figure 1 ;

[0022] Figure 4 Schematic diagram of the structure of the coating and recycling integrated oven with the first heater and the second heater of the battery electrode coating system provided in the embodiment of the present application Figure 2 ;

[0023] Figure 5 A schematic structural diagram of a heat pump module of a battery electrode coating system provided in an embodiment of the present application.

[0024] Description of reference numerals:

[0025] 1. Coating and recycling integrated oven; 110. Coating oven module; 111. Oven body; 1111. First exhaust port; 1112. Second exhaust port; 1113. Air inlet; 112. Exhaust fan; 113. Circulation fan; 120. Heat exchange recovery module; 121. Air-to-air heat exchanger; 122. Condensing main unit; 1221. Refrigeration surface cooler; 1222. Demister; 123. First heater; 124. Second heater; 125. Medium efficiency filter; 126. Waste liquid temporary storage tank; 127. High-temperature steam system;

[0026] 2. Heat pump module; 210. Evaporative condenser; 220. Refrigerant preparation module; 221. Circulating evaporator; 222. First compressor; 223. First expansion valve; 230. Heat medium preparation module; 231. Circulating condenser; 232. Second expansion valve; 233. Second compressor; 240. High-temperature buffer tank; 250. Liquid replenishing device; 260. Low-temperature buffer tank; 270. Auxiliary refrigeration unit;

[0027] 3. Exhaust gas treatment module. DETAILED DESCRIPTION

[0028] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without violating the connotation of the present application, so the present application is not limited by the specific embodiments disclosed below.

[0029] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0030] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0031] In this application, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0032] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being “above”, “above”, and “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below”, and “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0033] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0034] The embodiment of the present application provides a battery electrode coating system, please refer to Figures 1 to 5 The battery electrode coating system includes a coating and recovery integrated oven 1, a heat pump module 2 and an exhaust gas treatment module 3. The coating and recovery integrated oven 1 includes a coating oven module 110 and a heat exchange recovery module 120. The heat exchange recovery module 120 is fixed to the top of the coating oven module 110. The coating oven module 110 is used to dry the battery electrodes and discharge high-temperature exhaust gas. The heat exchange recovery module 120 is used to cool the high-temperature exhaust gas twice and heat the input gas flowing to the coating oven module 110 twice. The heat exchange recovery module 120 exchanges heat between the high-temperature exhaust gas and the input gas to achieve the first cooling of the high-temperature exhaust gas and the first heating of the input gas. After the high-temperature exhaust gas is cooled twice, a low-temperature exhaust gas is formed. The heat pump module 2 is used to convert heat between the second cooling and the second heating. The exhaust gas treatment module 3 is used to receive and process the low-temperature exhaust gas discharged by the heat exchange recovery module 120.

[0035] In an embodiment of the present application, the battery electrode coating system includes a coating and recovery integrated oven 1, a heat pump module 2 and an exhaust gas treatment module 3. The coating and recovery integrated oven 1 includes a coating oven module 110 and a heat exchange recovery module 120. The coating oven module 110 is used to dry the battery electrodes and discharge high-temperature exhaust gas. The heat exchange recovery module 120 is used to cool the high-temperature exhaust gas twice and heat the input gas flowing to the coating oven module 110 twice. The heat exchange recovery module 120 is fixed to the top of the coating oven module 110 to form an integrated device, which reduces the laying of pipes between the coating oven module 110 and the heat exchange recovery module 120, and improves space utilization and aesthetics; at the same time, the pipeline between the coating oven module 110 and the heat exchange recovery module 120 is short, and a fan can be installed only in the coating oven module 110, and there is no need to set a fan in the heat exchange recovery module 120, which further improves space utilization and reduces costs.

[0036] At the same time, compared with the prior art of burning natural gas to generate steam for heating and equipping a special refrigeration unit to provide chilled water for cooling, the heat pump module 2 can convert heat between the second cooling and the second heating, realize low-temperature and high-temperature energy conversion, improve energy utilization, save energy, and reduce system energy consumption.

[0037] In one embodiment, please refer to Figure 2 and Figure 3 The coating oven module 110 includes an oven body 111, an exhaust fan 112 and a circulation fan 113. The oven body 111 has a first exhaust port 1111, a second exhaust port 1112 and an air inlet 1113. The first heater 123 is arranged between the circulation fan 113 and the air inlet 1113. The air inlet 1113 is connected to the second exhaust port 1112 and the heat recovery module 120 at the same time, thereby improving the gas utilization rate; the exhaust fan 112 is used to transport the high-temperature exhaust gas discharged from the first exhaust port 1111 to the heat recovery module 120; the circulation fan 113 is used to transport the gas discharged from the second exhaust port 1112 and the input gas discharged from the heat recovery module 120 to the air inlet 1113.

[0038] Furthermore, each ventilation duct of the coating oven module 110 is also provided with an air valve for controlling the air volume.

[0039] In one embodiment, please refer to Figures 2 to 4 The heat recovery module 120 includes an air-to-air heat exchanger 121, a condensing main unit 122 and a first heater 123. The air-to-air heat exchanger 121 has a first gas channel and a second gas channel. The high-temperature exhaust gas in the first gas channel exchanges heat with the input gas in the second gas channel to cool the high-temperature exhaust gas for the first time and heat the input gas for the first time; the condensing main unit 122 is connected to the outlet of the first gas channel, and the condensing main unit 122 is used to cool the high-temperature exhaust gas for the second time. A first circulation flow path is formed between the condensing main unit 122 and the heat pump module 2 so that the refrigerant of the heat pump module 2 can be transported to the condensing main unit 122; the first heater 123 is connected to the outlet of the second gas channel, and the first heater 123 is used to heat the input gas for the second time. A second circulation flow path is formed between the first heater 123 and the heat pump module 2 so that the heat medium of the heat pump module 2 can be transported to the first heater 123.

[0040] In this way, the heat recovery module 120 heats the input gas twice to ensure that the temperature of the input gas meets the standard and improve the drying effect.

[0041] For details, please refer to Figures 2 to 4 The condensing main unit 122 includes a refrigerating surface cooler 1221 and a demister 1222. The high-temperature exhaust gas is liquefied into NMP waste liquid in the refrigerating surface cooler 1221. The heat exchange recovery module 120 also includes a waste liquid temporary storage tank 126 connected to the refrigerating surface cooler 1221. The waste liquid temporary storage tank 126 is used to store waste liquid. The demister 1222 is used to absorb part of the NMP waste liquid mixed in the low-temperature exhaust gas, and minimize the content of the NMP waste liquid in the low-temperature exhaust gas discharged from the condensing main unit 122.

[0042] Furthermore, the condensing main unit 122 of each coating and recycling integrated oven 1 is connected to a waste liquid temporary storage tank 126 .

[0043] Please also refer to Figures 2 to 4 The heat recovery module 120 further includes a medium efficiency filter 125, which is disposed between the gas-to-gas heat exchanger 121 and the first heater 123 to filter the input gas, improve the gas quality, and thus improve the drying effect.

[0044] In one embodiment, the refrigerant in the first circulation flow path is chilled water.

[0045] In one embodiment, the heat medium in the second circulation flow path is heat transfer oil or high-temperature hot water. High-temperature hot water has low cost, while heat transfer oil has the advantages of uniform heating and high temperature control accuracy.

[0046] In one embodiment, the outlet of the condensing main unit 122 is respectively connected to the inlet of the second gas channel and the exhaust gas treatment module 3 , part of the low-temperature exhaust gas is transported to the inlet of the second gas channel to form the input gas, and the remaining low-temperature exhaust gas is transported to the exhaust gas treatment module 3 .

[0047] Exemplarily, 90%-95% of the low-temperature exhaust gas is transported back to the gas-to-gas heat exchanger 121 for reuse, thereby improving gas utilization, and 5%-10% of the low-temperature exhaust gas is transported to the exhaust gas treatment module 3 for purification and then discharged into the air.

[0048] In one embodiment, please refer to Figure 2 and Figure 3 The first heater 123 is disposed in the coating oven module 110, specifically, near the air inlet 1113 of the oven body 111, so as to reduce the distance that the heated conveying gas is conveyed in the pipeline and reduce heat loss.

[0049] In one embodiment, in each row of the plurality of coating oven modules 110 , the temperature of the plurality of coating oven modules 110 increases gradually from both ends to the middle.

[0050] Exemplarily, 12 coating oven modules 110 form a row, and the six coating oven modules 110 on one half are used as an example for explanation. The temperature of the input gas at the air inlet 1113 of each coating oven module 110 is 100° C., 110° C., 120° C., 130° C., 140° C., and 140° C. from the end to the middle. It is understood that in other embodiments, the specific temperature of each coating oven module 110 is selected according to the actual drying requirements of the battery electrode, and is not limited here.

[0051] Exemplarily, the plurality of coating oven modules 110 are distributed in two rows, and the two rows of coating oven modules 110 are arranged vertically up and down.

[0052] In one embodiment, please refer to Figures 1 to 4 The heat exchange recovery module 120 also includes a second heater 124, which is arranged in the middle coating oven module 110. The second heater 124 is used to heat the input gas output by the first heater 123 for a third time, or the second heater 124 is used to heat the heat medium in the first heater 123.

[0053] Specifically, the two coating oven modules 110 at each end of the 12 coating oven modules 110 are only provided with the first heater 123. These coating oven modules 110 are only provided with the first heater 123 to meet the temperature requirements and avoid energy waste; the eight coating oven modules 110 in the middle are simultaneously provided with the first heater 123 and the second heater 124, ensuring that the temperature of the coating oven modules 110 in the middle can be higher than the temperature of the coating oven modules 110 at the end, thereby ensuring a better drying effect.

[0054] In one embodiment, see Figure 3 The second heater 124 uses high-temperature steam or high-temperature heat-conducting oil to heat the input gas output by the first heater 123 for the third time. Compared with traditional electric heating or gas heating methods, the heating speed using high-temperature steam is faster and more efficient; the heating method using high-temperature heat-conducting oil has the advantages of uniform heating and high temperature control accuracy.

[0055] Correspondingly, the second heaters 124 are heated by high-temperature steam, and the heat recovery module 120 further includes a high-temperature steam system 127 , which is used to provide high-temperature steam for all the second heaters 124 .

[0056] Alternatively, see Figure 4 The second heater 124 uses electromagnetic heating to heat the heat medium in the first heater 123. Electromagnetic heating does not require laying a large number of pipelines, and battery heating has many advantages such as high thermal efficiency, fast heating speed, energy saving and environmental protection, high temperature control accuracy, safety and reliability, and simple maintenance.

[0057] In summary, since the heat medium in the second circulation flow circuit is heat transfer oil or high-temperature hot water, the second heater 124 adopts high-temperature steam heating or electromagnetic heating; then the heat medium in the second circulation flow circuit of the present application is heat transfer oil, and the second heater 124 adopts high-temperature steam heating; or, the heat medium in the second circulation flow circuit of the present application is heat transfer oil, and the second heater 124 adopts electromagnetic heating; or, the heat medium in the second circulation flow circuit of the present application is high-temperature hot water, and the second heater 124 adopts high-temperature steam heating; or, the heat medium in the second circulation flow circuit of the present application is high-temperature hot water, and the second heater 124 adopts electromagnetic heating. It can be understood that the heating method of the heat medium in the second circulation flow circuit and the second heater 124 can be flexibly selected according to the actual drying needs, and is not limited here.

[0058] In one embodiment, see Figure 1 A plurality of coating and recovery integrated ovens 1 are provided, and the plurality of coating and recovery integrated ovens 1 are arranged in multiple rows and columns.

[0059] In one embodiment, a plurality of coating and recycling integrated ovens 1 are arranged in 2 rows and 12 columns.

[0060] It is understandable that the number and arrangement of the coating and recycling integrated ovens 1 are flexibly designed according to the actual site conditions and are not limited here.

[0061] In one embodiment, see Figure 5 The heat pump module 2 includes an evaporative condenser 210, a refrigerant preparation module 220 and a heat medium preparation module 230. The refrigerant preparation module 220 includes a circulating evaporator 221, a first compressor 222 and a first expansion valve 223. A first circulation flow path is formed between the circulating evaporator 221 and the condensing host 122. The circulating evaporator 221, the first compressor 222, the evaporative condenser 210 and the first expansion valve 223 are connected in sequence to form a third circulation flow path; the heat medium preparation module 230 includes a circulating condenser 231, a second expansion valve 232 and a second compressor 233. A second circulation flow path is formed between the circulating condenser 231 and the first heater 123. The circulating condenser 231, the second expansion valve 232, the evaporative condenser 210 and the second compressor 233 are connected in sequence to form a fourth circulation flow path. The third circulation flow path and the fourth circulation flow path exchange heat through the evaporative condenser 210.

[0062] Through the above arrangement, the refrigerant preparation module 220 and the heat medium preparation module 230 share an evaporative condenser 210, and there is no need to equip the coating and recovery integrated oven 1 with a separate refrigerant preparation device and a separate heat medium preparation device, thereby improving the integration and aesthetics of the battery electrode coating system, minimizing the laying of pipelines, improving space utilization and reducing costs.

[0063] In the first circulation flow path, the low-temperature and low-pressure refrigerant gas flowing out of the circulation evaporator 221 is compressed into a high-temperature and high-pressure refrigerant gas by the first compressor 222. The high-temperature and high-pressure refrigerant gas exchanges heat with the medium in the first circulation flow path through the evaporative condenser 210 to form a medium-temperature and high-pressure liquid refrigerant. The first expansion valve 223 then throttles the medium-temperature and high-pressure liquid refrigerant to become a low-temperature and low-pressure mist refrigerant. The mist refrigerant then absorbs heat in the circulation evaporator 221 to achieve a cooling effect. The principle of the second circulation flow path is similar to that of the first circulation flow path. The difference is that the heat medium in the circulation condenser 231 of the second circulation flow path is supplied to the heat exchange recovery module 120, which will not be repeated here.

[0064] In other implementations, an evaporative condenser 210, a refrigerant preparation module 220 and a heat medium preparation module 230 form a heat pump unit, and the heat pump module 2 is provided with multiple heat pump units to provide refrigerant and heat medium to ensure the supply of refrigerant and heat medium.

[0065] For example, the coating oven modules 110 of the present application are provided with 24, and the heat pump module 2 of the present application is provided with 6 sets of heat pump units to meet the heat exchange demand. It is understandable that in other embodiments, the number of heat pump units is designed according to the number of coating oven modules 110, and is not limited here.

[0066] In other embodiments, the heat pump module 2 also includes a high-temperature cache tank 240, which is disposed between the inlet of the heat medium preparation module 230 and the heat exchange recovery module 120. The high-temperature cache tank 240 is used to cache and insulate the heat medium in the second circulation flow path, and plays a role in transfer, storage and insulation.

[0067] In other embodiments, the heat pump module 2 further includes a fluid replenishing device 250 connected to the high-temperature cache tank 240, and the fluid replenishing device 250 is used to replenish heat medium into the high-temperature cache tank 240 in a timely manner to ensure stable operation of the system.

[0068] In other embodiments, the heat pump module 2 also includes a low-temperature cache tank 260, which is disposed between the inlet of the refrigerant preparation module 220 and the heat exchange recovery module 120. The low-temperature cache tank 260 is used to cache and insulate the refrigerant in the first circulation flow path, and also serves as a transfer, storage and insulation function.

[0069] In other embodiments, the heat pump module 2 also includes an auxiliary refrigeration unit 270, which is arranged between the outlet of the refrigerant preparation module 220 and the heat exchange recovery module 120. Since the heat exchange recovery module 120 is fixed to the top of the coating oven module 110, the pipeline between the refrigerant preparation module 220 and the condensing host 122 may be too long, and the refrigerant in the pipeline may be affected by the environment, causing the temperature of the refrigerant in the pipeline to rise. The auxiliary refrigeration unit 270 can assist in cooling the refrigerant in the pipeline after detecting that the temperature of the refrigerant passing through its position rises to a preset value, thereby ensuring that the temperature of the refrigerant meets the standard.

[0070] In other embodiments, both the first circulation flow path and the second circulation flow path are provided with a pump body, so that both the first circulation flow path and the second circulation flow path can run smoothly.

[0071] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0072] The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be construed as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims

1. A heat pump module, characterized in that: Applicable to a coating and recovery integrated oven, the coating and recovery integrated oven comprises a coating oven module and a heat exchange recovery module fixed on the coating oven module, and the heat pump module comprises: Evaporative condenser; A refrigerant preparation module comprises a circulation evaporator, a first compressor and a first expansion valve, wherein a first circulation flow path is formed between the circulation evaporator and the heat exchange recovery module, and the circulation evaporator, the first compressor, the evaporative condenser and the first expansion valve are sequentially connected to form a third circulation flow path; The heat medium preparation module includes a circulating condenser, a second expansion valve and a second compressor. A second circulating flow path is formed between the circulating condenser and the heat exchange recovery module. The circulating condenser, the second expansion valve, the evaporative condenser and the second compressor are connected in sequence to form a fourth circulating flow path. The third circulating flow path and the fourth circulating flow path exchange heat through the evaporative condenser.

2. The heat pump module according to claim 1, characterized in that: The refrigerant in the first circulation flow path is chilled water.

3. The heat pump module according to claim 1, characterized in that: The heat medium in the second circulation flow path is heat transfer oil or high-temperature hot water.

4. The heat pump module according to any one of claims 1 to 3, characterized in that: One of the evaporative condenser, one of the refrigerant preparation module and one of the heat medium preparation modules constitutes a heat pump unit, and the heat pump module comprises a plurality of heat pump units.

5. The heat pump module according to any one of claims 1 to 3, characterized in that: The heat pump module further includes a high-temperature cache tank, which is disposed between the inlet of the heat medium preparation module and the heat exchange recovery module, and is used for caching and keeping the heat medium in the second circulation flow path warm.

6. The heat pump module according to claim 5, characterized in that: The heat pump module also includes a fluid replenishing device connected to the high-temperature cache tank, and the fluid replenishing device is used to replenish heat medium into the high-temperature cache tank.

7. The heat pump module according to any one of claims 1 to 3, characterized in that: The heat pump module also includes a low-temperature cache tank, which is arranged between the inlet of the refrigerant preparation module and the heat exchange recovery module, and is used to cache and keep the refrigerant in the first circulation flow path.

8. The heat pump module according to any one of claims 1 to 3, characterized in that: The heat pump module further includes an auxiliary refrigeration unit, which is arranged between the outlet of the refrigerant preparation module and the heat exchange recovery module.

9. The heat pump module according to any one of claims 1 to 3, characterized in that: The first circulation flow path and the second circulation flow path are both provided with a pump body.

10. A battery electrode coating system, characterized in that: It comprises a coating and recovery integrated oven, an exhaust gas treatment module and a heat pump module as described in any one of claims 1 to 9, wherein the heat pump module is used to provide refrigerant and heat medium for the coating and recovery integrated oven, and the exhaust gas treatment module is used to receive and treat the exhaust gas discharged from the coating and recovery integrated oven.

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