Cooling system and charging device

Abstract

The application discloses a cooling system and a charging device, and the cooling system comprises a heat exchange flow path, a detection tank, and a heat exchange assembly, wherein the heat exchange flow path has an inlet end, an outlet end, a first valve body and a first driving pump, and the first driving pump is used for driving a heat exchange medium in the heat exchange flow path to flow along the heat exchange flow path; the detection tank is used for detecting information of the heat exchange medium; and the heat exchange assembly is adapted to heat exchange with the heat exchange flow path. Thus, the detection tank is arranged to detect the quality and filling amount of the heat exchange medium, the heat exchange medium is selectively replaced or supplemented according to the obtained information, the maintenance cost of the battery heat exchange system is reduced, the detection tank can be selectively connected with the heat exchange flow path, a user can flexibly select whether the heat exchange medium needs to be detected, the heat exchange assembly is selectively connected with the heat exchange flow path, the heat exchange assembly can heat exchange with the heat exchange medium, and the heat exchange efficiency and heat exchange effect of the heat exchange medium on the battery are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchange, in particular to a cooling system and a charging device. BACKGROUND

[0002] A heat exchange medium is arranged in the battery heat exchange system to exchange heat with the battery, and a large amount of air is dissolved in the heat exchange medium. In order to reduce the noise generated when the battery heat exchange system is running, the air in the battery heat exchange system needs to be frequently discharged. However, the antifreeze (such as ethanol or ethylene glycol) in the heat exchange medium is easy to volatilize and will be discharged together with the air, resulting in poor quality of the heat exchange medium.

[0003] In the related art, the heat exchange medium needs to be checked and supplemented manually, resulting in high maintenance cost of the battery heat exchange system, and the user cannot timely find that the heat exchange medium is deteriorated or the filling amount is insufficient. When the heat exchange medium is deteriorated, the freezing point of the heat exchange medium is easily affected, resulting in easy freezing of the heat exchange medium in winter. When the filling amount of the heat exchange medium is insufficient, the heat exchange effect of the battery is poor, affecting the service life of the battery. SUMMARY

[0004] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, one object of the present application is to provide a cooling system to detect the quality and filling amount of the heat exchange medium, reduce the maintenance cost of the battery heat exchange system, and ensure the service life of the battery.

[0005] According to the cooling system of the present application, the cooling system comprises: a heat exchange flow path having an inlet end, an outlet end, a first valve body and a first driving pump, the inlet end is adapted to communicate with a heat exchange system outlet of a battery heat exchange system, the outlet end is adapted to communicate with a heat exchange system inlet of the battery heat exchange system, the first valve body has a first connecting port, a second connecting port and a third connecting port which selectively communicate, the first connecting port also selectively communicates with the inlet end, the third connecting port also selectively communicates with the outlet end, and the first driving pump is used to drive the heat exchange medium in the heat exchange flow path to flow along the heat exchange flow path; a detection tank for detecting information of the heat exchange medium, the detection tank has a detection tank inlet and a detection tank outlet, the detection tank inlet selectively communicates with the second connecting port, and the detection tank outlet selectively communicates with the first connecting port; and a heat exchange assembly adapted to exchange heat with the heat exchange flow path to warm up or cool down the heat exchange medium in the heat exchange flow path.

[0006] According to the cooling system, the quality and the filling amount of the heat exchange medium can be detected by the detection tank, so that the user can obtain the information of the heat exchange medium in time, and selectively replace or supplement the heat exchange medium according to the obtained information, without manual detection, so as to prevent the battery heat exchange system from malfunctioning, reduce the maintenance cost of the battery heat exchange system, ensure the service life of the battery, and selectively connect the detection tank with the heat exchange flow path, so that the user can flexibly select whether the heat exchange medium needs to be detected according to the user's own needs, improve the flexibility of the cooling system, and the heat exchange assembly is further arranged, the heat exchange assembly is selectively connected with the heat exchange flow path, when the quality and the filling amount of the heat exchange medium detected by the detection tank reach the nominal value, the heat exchange assembly can exchange heat with the heat exchange medium, improve the heat exchange efficiency and the heat exchange effect of the heat exchange medium on the battery, and the heat exchange function of the battery heat exchange system does not need to be started, so that the energy of the battery heat exchange system is saved.

[0007] According to some embodiments of the present application, the heat exchange flow path further has a first opening and closing valve, and the inlet end and the first connecting port are connected with the first opening and closing valve.

[0008] According to some embodiments of the present application, the heat exchange flow path further has a second drive pump, and the second drive pump is used to drive the heat exchange medium in the heat exchange flow path to flow along the heat exchange flow path, the second drive pump is connected between the first opening and closing valve and the first connecting port, and the detection tank outlet and the pump inlet of the second drive pump are connected with a second opening and closing valve.

[0009] According to some embodiments of the present application, the heat exchange flow path further has a first flow meter, and the second drive pump and the first connecting port are connected with the first flow meter.

[0010] According to some embodiments of the present application, the detection tank inlet and the second connecting port are connected with a third opening and closing valve.

[0011] According to some embodiments of the present application, the heat exchange flow path further has a fourth opening and closing valve, and the outlet end and the third connecting port are connected with the fourth opening and closing valve.

[0012] According to some embodiments of the present application, the first drive pump is connected between the fourth opening and closing valve and the third connecting port.

[0013] According to some embodiments of the present application, the heat exchange flow path further has a second flow meter, and the first drive pump and the fourth opening and closing valve are connected with the second flow meter.

[0014] According to some embodiments of the present application, the cooling system further comprises a liquid supplement tank, and a liquid supplement tank outlet of the liquid supplement tank is selectively connected with the heat exchange flow path.

[0015] According to some embodiments of the present application, the cooling system further comprises a recovery tank, and a fifth on-off valve is connected between a recovery tank inlet of the recovery tank and the third connecting port.

[0016] According to some embodiments of the present application, the cooling system further comprises a third driving pump, which is connected between the fifth on-off valve and the third connecting port.

[0017] According to some embodiments of the present application, the cooling system further comprises a third flow meter, which is connected between the third driving pump and the fifth on-off valve.

[0018] According to some embodiments of the present application, the cooling system further comprises a vacuumizing flow path, which is used to extract gas in the cooling system and the battery heat exchange system.

[0019] According to some embodiments of the present application, the vacuumizing flow path comprises a vacuum pump and a sixth on-off valve, which is connected between the vacuum pump and the heat exchange flow path to connect or disconnect the vacuum pump and the heat exchange flow path.

[0020] According to some embodiments of the present application, the vacuumizing flow path further comprises a pressure sensor, which is used to detect pressure in the vacuumizing flow path.

[0021] Another object of the present application is to provide a charging device.

[0022] The charging device according to the present application comprises the above cooling system.

[0023] According to the charging device of the present application, since the charging device is provided with the above cooling system, the cooling system can detect, supplement, replace, etc. the heat exchange medium of the battery heat exchange system, so as to ensure the quality and filling amount of the heat exchange medium, reduce the maintenance cost of the battery heat exchange system, and the cooling system is further provided with a heat exchange assembly, the heat exchange medium can exchange heat with the heat exchange assembly, so as to improve the heat exchange efficiency and heat exchange effect of the heat exchange medium on the battery. In addition, the charging mode and the heat exchange mode of the charging device can be started at the same time, or the heat exchange mode of the cooling system is started after the charging mode of the charging device is started, so as to exchange heat for the battery when the battery is charging, improve the heat exchange efficiency of the heat exchange medium on the battery, ensure the stability of the battery temperature, and save the energy of the battery heat exchange system without starting the heat exchange function of the battery heat exchange system.

[0024] Additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0025] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description, taken in conjunction with the following drawings in which:

[0026] Figure 1 Structure diagram of the cooling system according to the embodiment of the present application connected with the battery heat exchange system;

[0027] Figure 2 Structure diagram of the cooling system according to the embodiment of the present application connected with the battery heat exchange system;

[0028] Figure 3 Structure diagram of the detection tank releasing the heat exchange medium according to the embodiment of the present application;

[0029] Figure 4 Structure diagram of the liquid supplementing tank supplementing liquid according to the embodiment of the present application;

[0030] Figure 5 Structure diagram of the recovery tank recovering the heat exchange medium according to the embodiment of the present application;

[0031] Figure 6 Structure diagram of the vacuumizing flow path vacuumizing according to the embodiment of the present application;

[0032] Figure 7 Structure diagram of the cooling system according to the embodiment of the present application connected with the battery heat exchange system;

[0033] Figure 8 Structure diagram of the cooling system according to the embodiment of the present application connected with the battery heat exchange system;

[0034] Figure 9 Structure diagram of the cooling system according to the embodiment of the present application connected with the battery heat exchange system;

[0035] Reference signs:

[0036] Cooling system 100, heat exchange flow path 101, inlet end 102, outlet end 103, vacuumizing flow path 104,

[0037] Second driving pump 1, first driving pump 2, third driving pump 3, first flow meter 4, third flow meter 5, second flow meter 6, second on-off valve 7, third on-off valve 8, fourth on-off valve 9, pressure sensor 10, first on-off valve 11, seventh on-off valve 12, sixth on-off valve 13, fifth on-off valve 14, liquid supplementing tank 15, detection tank 16, detection tank inlet 161, detection tank outlet 162, recovery tank 17, vacuum pump 18, heat exchange assembly 19, battery heat exchange system 20, first valve body 21, first connecting port a, second connecting port b, third connecting port c. DETAILED DESCRIPTION

[0038] Embodiments of the present invention are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following is for reference. Figures 1-9 A cooling system 100 according to an embodiment of the present invention is described, wherein the flow path shown by the dashed line in the figure indicates that the flow path is in a closed state, and the "arrow" indicates the flow direction of the heat exchange medium.

[0040] like Figure 1 As shown, the cooling system 100 according to an embodiment of the present invention includes: a heat exchange flow path 101, a detection tank 16, and a heat exchange assembly 19.

[0041] The heat exchange flow path 101 has an inlet end 102, an outlet end 103, a first valve body 21, and a first drive pump 2. The inlet end 102 is adapted to be connected to the heat exchange system outlet of the battery heat exchange system 20, and the outlet end 103 is adapted to be connected to the heat exchange system inlet of the battery heat exchange system 20. The first valve body 21 has a first connection port a, a second connection port b, and a third connection port c that are selectively connected. The first connection port a is also selectively connected to the inlet end 102, and the third connection port c is also selectively connected to the outlet end 103. The first drive pump 2 is used to drive the heat exchange medium in the heat exchange flow path 101 to flow along the heat exchange flow path 101.

[0042] The detection tank 16 is used to detect information about the heat exchange medium. The detection tank 16 has a detection tank inlet 161 and a detection tank outlet 162. The detection tank inlet 161 is selectively connected to the second connection port b, and the detection tank outlet 162 is selectively connected to the first connection port a. The heat exchange assembly 19 is adapted to exchange heat with the heat exchange flow path 101 to raise or lower the temperature of the heat exchange medium in the heat exchange flow path 101.

[0043] Specifically, the heat exchange medium of the battery heat exchange system 20 can flow out through the heat exchange system outlet and flow into the heat exchange flow path 101 through the inlet 102. The first connection port a can be connected to the inlet 102, and the heat exchange medium can flow from the inlet 102 to the first connection port a. The first connection port a can be selectively connected to the second connection port b. The detection tank inlet 161 can be connected to the second connection port b, thereby allowing the heat exchange medium to flow into the detection tank 16.

[0044] Meanwhile, the detection tank inlet 161 is selectively connected with the second connection port b, and the first connection port a is selectively communicated with the second connection port b, so that the detection tank 16 can be selectively connected with the heat exchange flow path 101, and the user can select whether to detect the heat exchange medium according to the actual situation, improve the flexibility of the cooling system 100, and improve the user experience.

[0045] Further, the cooling system 100 can be connected in communication with the battery heat exchange system 20, the cooling system 100 collects the nominal filling information and quality information of different battery heat exchange systems 20, and the cooling system 100 can obtain the composition information of the heat exchange medium of the battery heat exchange system 20 and the nominal filling information and quality information of the heat exchange medium. The liquid level detection sensor, the composition detection sensor and the impurity detection sensor can be arranged in the detection tank 16 to detect the quality (such as the content of the antifreeze in the heat exchange medium, the cleanliness of the heat exchange medium, etc., and the types of antifreeze include but are not limited to ethanol, ethylene glycol, etc.) and the filling amount of the heat exchange medium, and compare the above information with the nominal information. When the filling amount and quality or cleanliness of the heat exchange medium are lower than the nominal value, the cooling system 100 can issue an alarm, and the information of the heat exchange medium can be obtained without manual detection, preventing the cooling system 100 from malfunctioning and reducing the maintenance cost of the cooling system 100.

[0046] It should be noted that the "nominal filling information" refers to the filling amount of the heat exchange medium indicated by the battery heat exchange system 20.

[0047] The heat exchange assembly 19 is arranged on the heat exchange flow path 101, and the inlet of the heat exchange assembly 19 can be selectively connected with the third connection port c, and the third connection port c can be connected with the second connection port b. The heat exchange medium can flow to the heat exchange assembly 19 through the second connection port b and the third connection port c to exchange heat with the heat exchange assembly 19, so as to realize the heating or cooling of the heat exchange medium. The first driving pump 2 can drive the heat-exchanged heat exchange medium to flow to the heat exchange system inlet of the battery heat exchange system 20 through the outlet end 103, so that the heat exchange medium enters the battery heat exchange system 20 to exchange heat with the battery to realize the cooling or heating of the battery. Thus, the effective heat exchange of the battery can be realized, and the heat exchange efficiency of the battery caused by the quality or filling amount of the heat exchange medium can be prevented.

[0048] The heat exchange medium flows into the heat exchange flow path 101 from the battery heat exchange system 20, and flows into the detection tank 16 through the detection tank inlet 161. The detection tank 16 detects the heat exchange medium. When the detection tank 16 detects that the quality and filling amount of the heat exchange medium reach the nominal value (i.e., the quality and filling amount of the heat exchange medium can reach the condition for realizing heat exchange), the first connecting port a can be switched to be in communication with the third connecting port c, so as to connect the heat exchange assembly 19 to the heat exchange flow path 101. The heat exchange assembly 19 can start to operate to exchange heat with the heat exchange medium. The heat exchange medium after heat exchange can flow into the battery heat exchange system 20 through the outlet end 103, and the heat exchange medium exchanges heat with the battery.

[0049] A large amount of air is dissolved in the heat exchange medium. In order to reduce the noise generated when the battery heat exchange system 20 operates, it is necessary to frequently discharge the air in the battery heat exchange system 20. The antifreeze (such as ethanol or ethylene glycol) in the heat exchange medium is volatile and can be discharged with the air, which causes the quality of the heat exchange medium to deteriorate. In the related art, manual inspection and replenishment of the heat exchange medium are usually required, which results in high maintenance cost of the battery heat exchange system. In addition, the user cannot timely find that the antifreeze is deteriorated or the filling amount is insufficient, which results in poor heat exchange effect of the battery and affects the service life of the battery.

[0050] The detection tank 16 is arranged to detect the quality and filling amount of the heat exchange medium, so that the user can obtain the information of the heat exchange medium in time, and replace or replenish the heat exchange medium according to the actual situation. The detection tank 16 can be selectively connected with the heat exchange flow path 101. The user can flexibly select whether to detect the heat exchange medium according to the actual situation, which improves the flexibility of the cooling system 100. In addition, the heat exchange assembly 19 is arranged. When the detection tank 16 detects that the quality and filling amount of the heat exchange medium reach the nominal value, the heat exchange assembly 19 is connected with the heat exchange flow path 101, the heat exchange medium exchanges heat, and the heat exchange efficiency and heat exchange effect of the heat exchange medium can be ensured, so that the battery can be effectively heat exchanged through the heat exchange medium.

[0051] According to the cooling system 100 provided by the application, the detection tank 16 is arranged to detect the quality and filling amount of the heat exchange medium, so that the user can obtain the information of the heat exchange medium in time, and selectively replace or supplement the heat exchange medium according to the obtained information, without manual detection, so as to prevent the battery heat exchange system 20 from malfunctioning, reduce the maintenance cost of the battery heat exchange system 20, ensure the service life of the battery, and selectively connect the detection tank 16 with the heat exchange flow path 101, so that the user can flexibly select whether to detect the heat exchange medium according to the user's own needs, improve the flexibility of the cooling system 100, and the heat exchange assembly 19 is further arranged, and the heat exchange assembly 19 is selectively connected with the heat exchange flow path 101, so that when the detection tank 16 detects that the quality and filling amount of the heat exchange medium reach the nominal value, the heat exchange assembly 19 can exchange heat with the heat exchange medium, improve the heat exchange efficiency and heat exchange effect of the heat exchange medium on the battery, and without the need to open the heat exchange function of the battery heat exchange system 20, the energy of the battery heat exchange system 20 is saved.

[0052] In some embodiments of the application, the first valve body 21 is configured as a three-way valve, for example, the first valve body 21 can be configured as an electromagnetic three-way valve, and the specific configuration of the first valve body 21 is not limited here.

[0053] Referring to Figure 1 In some embodiments of the application, the heat exchange flow path 101 further has a first on-off valve 11, and the first on-off valve 11 is connected between the inlet end 102 and the first connecting port a.

[0054] Specifically, the first on-off valve 11 can selectively connect the first connecting port a with the inlet end 102, so that the heat exchange medium can flow into the heat exchange flow path 101 through the inlet end 102 and the first on-off valve 11, and the first on-off valve 11 can be arranged at a position close to the inlet end 102, so as to selectively control the heat exchange medium to flow into the heat exchange flow path 101 at the position of the inlet end 102, and prevent the heat exchange medium from flowing into the heat exchange flow path 101 by itself after the battery heat exchange system 20 is connected with the heat exchange flow path 101.

[0055] Further, after the heat exchange medium flows into the heat exchange pipe or the detection tank 16 completes the detection of the heat exchange medium, the first on-off valve 11 can be closed to disconnect the inlet end 102 from the heat exchange flow path 101, so as to prevent the substandard heat exchange medium from flowing back to the battery heat exchange system 20 through the inlet end 102.

[0056] As Figure 1As shown, in some embodiments of the present invention, the heat exchange flow path 101 further includes a second drive pump 1, which is used to drive the heat exchange medium in the heat exchange flow path 101 to flow along the heat exchange flow path 101. The second drive pump 1 is connected between the first on / off valve 11 and the first connection port a. A second on / off valve 7 is connected between the detection tank outlet 162 and the pump inlet of the second drive pump 1.

[0057] Specifically, when the first on / off valve 11 is opened to connect the inlet end 102 with the first connection port a, the heat exchange medium can flow from the battery heat exchange system 20 into the heat exchange flow path 101. The second drive pump 1 can drive the heat exchange medium to flow in the heat exchange flow path 101. When the user needs to test the heat exchange medium, the first connection port a and the second connection port b are connected, and the heat exchange medium flows into the test tank 16. The test tank 16 tests the heat exchange medium. When the test tank 16 has completed the test of the heat exchange medium or the user chooses not to test the heat exchange medium, the first connection port a and the third connection port c are connected, and the heat exchange medium can flow into the heat exchange component 19 to realize the heat exchange of the heat exchange medium and improve the flow efficiency of the heat exchange medium.

[0058] Furthermore, the second on / off valve 7 allows the outlet 162 of the detection tank to be selectively connected to the heat exchange flow path 101. When the detection tank 16 completes the detection of the heat exchange medium, the second on / off valve 7 opens, and the outlet 162 of the detection tank is connected to the heat exchange flow path 101. The heat exchange medium flows from the detection tank 16 into the heat exchange flow path 101. At the same time, the first connection port a can be connected to the third connection port c, and the heat exchange medium flows to the heat exchange component 19 to exchange heat with the heat exchange component 19.

[0059] like Figure 1 As shown, in some embodiments of the present invention, the heat exchange flow path 101 further includes a first flow meter 4, and the second drive pump 1 and the first connection port a are connected to the first flow meter 4.

[0060] Specifically, the first flow meter 4 can detect the flow rate of the heat exchange medium in the heat exchange flow path 101. When the cooling system 100 detects the heat exchange medium, if the first flow meter 4 detects that the flow rate of the heat exchange medium in the heat exchange flow path 101 is 0, all the heat exchange medium in the heat exchange flow path 101 flows into the detection tank 16. At this time, the second drive pump 1 is turned off, reducing the energy consumption of the heat exchange flow path 101.

[0061] Reference Figure 1 In some embodiments of the present invention, a third on / off valve 8 is connected between the detection tank inlet 161 and the second connection port b.

[0062] Specifically, in combination Figure 1 and Figure 2The third on-off valve 8 selectively connects the detection tank inlet 161 with the heat exchange flow path 101. When the cooling system 100 detects the heat exchange medium, the third on-off valve 8 is opened, the detection tank inlet 161 is connected with the second connecting port b, the first connecting port a is connected with the second connecting port b, and the heat exchange medium can flow into the detection tank 16.

[0063] Further referring to Figure 3 When the first flow meter 4 detects that the flow rate of the heat exchange medium in the heat exchange flow path 101 is 0, the heat exchange medium in the heat exchange flow path 101 flows into the detection tank 16, and the third on-off valve 8 is closed to disconnect the detection tank inlet 161 from the heat exchange flow path 101 to prevent the heat exchange medium from flowing back.

[0064] As shown in Figure 1 some embodiments of the present application, the heat exchange flow path 101 further has a fourth on-off valve 9, and the fourth on-off valve 9 is connected between the outlet end 103 and the third connecting port c.

[0065] Specifically, the fourth on-off valve 9 can selectively connect the outlet end 103 with the third connecting port c, and the heat exchange medium can flow out of the heat exchange flow path 101 through the fourth on-off valve 9 and the outlet end 103. The fourth on-off valve 9 can be arranged at a position close to the outlet end 103 of the heat exchange flow path 101 to control the heat exchange medium to flow into the heat exchange flow path 101 at the position of the outlet end 103, so that the heat exchange medium does not flow back to the battery heat exchange system 20 after the battery heat exchange system 20 is connected with the heat exchange flow path 101.

[0066] Referring to Figure 1 some embodiments of the present application, the first driving pump 2 is connected between the fourth on-off valve 9 and the third connecting port c.

[0067] Specifically, the first driving pump 2 and the second driving pump 1 can jointly act to drive the heat exchange medium to flow in the heat exchange flow path 101. The first driving pump 2 has a better driving effect on the heat exchange medium flowing between the fourth on-off valve 9 and the third connecting port c, so as to ensure the flow efficiency of the heat exchange medium.

[0068] As shown in Figure 1 some embodiments of the present application, the heat exchange flow path 101 further has a second flow meter 6, and the second flow meter 6 is connected between the first driving pump 2 and the fourth on-off valve 9.

[0069] Specifically, the second flow meter 6 can detect the flow rate of the heat exchange medium flowing to the outlet end 103, when the heat exchange assembly 19 is in heat exchange with the heat exchange medium, the second flow meter 6 detects that the flow rate of the heat exchange medium flowing to the outlet end 103 is 0, the heat exchange medium in the heat exchange flow path 101 all flows back to the battery heat exchange system 20, at this time, the first driving pump 2, the second driving pump 1 and the fourth on-off valve 9 are all closed, and the energy consumption of the heat exchange flow path 101 is reduced.

[0070] Referring to Figure 1 In some embodiments of the present application, the cooling system 100 further comprises a liquid supplement tank 15, and a liquid supplement tank 15 outlet of the liquid supplement tank 15 selectively communicates with the heat exchange flow path 101.

[0071] Specifically, the liquid supplement tank 15 stores new heat exchange medium, and a seventh on-off valve 12 is arranged between the liquid supplement tank 15 outlet and the heat exchange flow path 101, and the seventh on-off valve 12 can selectively connect the liquid supplement tank 15 outlet and the heat exchange flow path 101.

[0072] When the detection tank 16 detects that the heat exchange medium is insufficient, the cooling system 100 can issue a warning to the user, and after the user agrees to supplement the heat exchange medium, as shown in Figure 4 When the seventh on-off valve 12 is opened and the liquid supplement tank 15 outlet communicates with the heat exchange flow path 101, the new heat exchange medium in the liquid supplement tank 15 can flow into the heat exchange flow path 101 to supplement the heat exchange medium, and at the same time, the new heat exchange medium mixed with the original heat exchange medium (the "original heat exchange medium" refers to the heat exchange medium flowing out of the battery heat exchange system 20) input into the heat exchange flow path 101 can improve the quality of the original heat exchange medium.

[0073] Among them, a liquid level sensor is arranged in the liquid supplement tank 15 to detect the liquid level in the liquid supplement tank 15.

[0074] Therefore, the automatic detection of the heat exchange medium of the battery heat exchange system 20 and the automatic supplement of the heat exchange medium can be realized, and the detection efficiency and the supplement efficiency of the heat exchange medium can be improved.

[0075] As shown in Figure 1 In some embodiments of the present application, the cooling system 100 further comprises a recovery tank 17, and a fifth on-off valve 14 is connected between a recovery tank 17 inlet of the recovery tank 17 and the third connecting port c.

[0076] Specifically, the recovery tank 17 is used to recover and store the heat exchange medium in the heat exchange flow path 101, and the fifth on-off valve 14 can be selectively opened and closed to selectively connect the recovery tank 17 inlet and the heat exchange flow path 101, so that the recovery tank 17 can selectively recover the heat exchange medium in the heat exchange flow path 101.

[0077] As shown in Figure 3As shown, when the detection tank 16 detects that the quality of the heat exchange medium does not meet the heat exchange condition, the heat exchange medium flows out of the detection tank 16, the inlet of the recovery tank 17 is communicated with the heat exchange flow path 101, so as to recover the heat exchange medium.

[0078] Referring to Figure 1 In some embodiments of the present application, the cooling system 100 further comprises a third driving pump 3 connected between the fifth on-off valve 14 and the third connecting port c.

[0079] Specifically, in combination with Figure 1 , Figure 3 and Figure 5 , when the cooling system 100 starts the recovery mode, the second on-off valve 7 is opened, the heat exchange medium flows into the heat exchange flow path 101 from the detection tank 16, the fifth on-off valve 14 is opened, the opening of the recovery tank 17 is communicated with the heat exchange flow path 101, and the third driving pump 3 can drive the heat exchange medium to flow into the recovery tank 17 from the heat exchange flow path 101, so as to realize the recovery of the unqualified heat exchange medium, and when the first flow meter 4 detects that the flow of the heat exchange medium is 0, the second driving pump 1 is closed.

[0080] In addition, when the second on-off valve 7 and the fifth on-off valve 14 are opened, the third on-off valve 8 is also in an opened state, so as to ensure that the heat exchange medium in the flow path from the second connecting port b to the detection tank 16 can be recovered into the recovery pipe.

[0081] Further in combination with Figure 4 , after the recovery of the unqualified heat exchange medium is completed, the liquid supplement tank 15 can be communicated with the heat exchange flow path 101 through the seventh on-off valve 12, and the new heat exchange medium in the liquid supplement tank 15 can flow into the heat exchange flow path 101, so as to realize the replacement of the heat exchange medium, and the replaced heat exchange medium can flow from the heat exchange flow path 101 to the battery heat exchange system 20 to exchange heat with the battery, and the heat exchange medium after the heat exchange with the battery flows into the heat exchange flow path 101 again and can exchange heat with the heat exchange assembly 19.

[0082] Therefore, the automatic detection, supplement or replacement of the heat exchange medium can be realized, and the heat exchange of the heat exchange medium can be realized, so as to improve the detection efficiency, supplement efficiency or replacement efficiency of the heat exchange medium, save the maintenance cost of the battery heat exchange system 20, and ensure the heat exchange efficiency of the heat exchange medium to the battery.

[0083] As Figure 1 shown, in some embodiments of the present application, the cooling system 100 further comprises a third flow meter 5 connected between the third driving pump 3 and the fifth on-off valve 14.

[0084] Specifically, the third flow meter 5 can detect the flow rate of the heat exchange medium flowing to the recovery tank 17, when the recovery tank 17 recovers the heat exchange medium, the third flow meter 5 detects that the flow rate of the heat exchange medium flowing to the recovery tank 17 is 0, the heat exchange medium in the heat exchange flow path 101 all flows into the recovery tank 17, at this time, the third drive pump 3 is closed.

[0085] As shown in Figure 1 some embodiments of the present application, the cooling system 100 further comprises: a vacuum extraction flow path 104, the vacuum extraction flow path 104 is used to extract the gas in the cooling system 100 and the battery heat exchange system 20.

[0086] Specifically, the vacuum extraction flow path 104 is arranged in the cooling system 100, the vacuum extraction system can be used to vacuumize the cooling system 100, and the cooling system 100 can be in communication with the battery heat exchange system 20, the vacuum extraction system can also be used to vacuumize the battery heat exchange system 20.

[0087] Since there may be gas in the cooling system 100 and the battery heat exchange system 20 after the heat exchange medium is recovered, the vacuum extraction flow path 104 can be connected after the recovery of the heat exchange medium is completed to perform vacuum extraction, reduce the content of gas in the cooling system 100 and the battery heat exchange system 20, thereby reducing the noise generated when the cooling system 100 operates, and when the cooling system 100 is applied to a vehicle, the operating noise of the vehicle cooling water circuit can be reduced.

[0088] As shown in Figure 1 some embodiments of the present application, the vacuum extraction flow path 104 comprises: a vacuum pump 18 and a sixth on-off valve 13, the sixth on-off valve 13 is connected between the vacuum pump 18 and the heat exchange flow path 101 to make the vacuum pump 18 and the heat exchange flow path 101 communicate or disconnect.

[0089] Specifically, the vacuum pump 18 is used for vacuum extraction, and the sixth on-off valve 13 can be selectively opened to control the connection state of the vacuum pump 18, referring to Figure 6 or Figure 9 When vacuum extraction is needed, the sixth on-off valve 13 is opened, the vacuum pump 18 is connected, and the vacuum pump 18 can perform vacuum extraction on the cooling system 100 and the battery heat exchange system 20.

[0090] Correspondingly, when vacuum extraction is not needed, the sixth on-off valve 13 is closed to disconnect the vacuum extraction flow path 104 from the heat exchange flow path 101, preventing the heat exchange medium from flowing into the vacuum extraction flow path 104.

[0091] It should be noted that the first on-off valve 11, the second on-off valve 7, the third on-off valve 8, the fourth on-off valve 9, the fifth on-off valve 14, the sixth on-off valve 13 and the seventh on-off valve 12 can all be configured as solenoid valves.

[0092] Referring toFigure 1 In some embodiments of the present invention, the vacuum flow path 104 further includes a pressure sensor 10, which is used to detect the pressure inside the vacuum flow path 104.

[0093] Specifically, the pressure sensor 10 can be set between the vacuum pump 18 and the sixth on / off valve 13, and the pressure sensor 10 is used to detect the pressure of the vacuum flow path 104. When the pressure detected by the pressure sensor 10 reaches the target value, the sixth on / off valve 13 is closed, and the vacuum pump 18 is turned off to complete the vacuuming operation.

[0094] The working process of the cooling system 100 of this application is described in detail below.

[0095] After the battery heat exchange system 20 is connected to the cooling system 100, the cooling system 100 asks the user whether to perform heat exchange medium detection. If so, it first enters the heat exchange medium detection mode.

[0096] like Figure 2 As shown, after receiving the heat exchange medium detection command, the cooling system 100 enters the heat exchange medium detection mode. The first on-off valve 11 and the third on-off valve 8 are opened, and the first valve body 21 is switched to connect the first connection port a and the second connection port b to connect the detection tank 16 to the battery heat exchange system 20. Other pipelines in the cooling system 100 are in a vacuum state. The heat exchange medium flows into the cooling system 100 through the inlet end 102 and the first on-off valve 11. The second drive pump 1 is started, and the second drive pump 1 drives the heat exchange medium to flow through the first connection port a, the second connection port b, the third on-off valve 8 and the detection tank inlet 161, thus flowing into the detection tank 16. The first flow meter 4 can detect the flow rate of the heat exchange medium. When the first flow meter 4 detects that the flow rate of the heat exchange medium is 0, the second drive pump 1 and the third on-off valve 8 are closed, and the detection tank 16 detects the heat exchange medium.

[0097] The detection method of the detection tank 16 for the heat exchange medium is as follows: The detection tank 16 can first detect the content of antifreeze in the heat exchange medium, and determine whether the difference between the measured content a of antifreeze and the nominal content a1 of antifreeze satisfies a-a1≥y2 (y2 is defined as the second preset difference, "second preset difference" refers to the minimum difference between the measured content a of antifreeze and the nominal content a1 of antifreeze that satisfies the requirement for the detection tank 16 to enter the next detection item). When a-a1<y2, the heat exchange medium replacement mode is entered.

[0098] When a-a1≥y2, the impurity content in the heat exchange medium is detected, and the relationship between the current cleanliness q of the heat exchange medium and the target cleanliness q1 is determined. When q<q1, the heat exchange medium replacement mode is entered.

[0099] When q≥q1, the liquid level of the heat exchange medium in the detection tank 16 is detected, and it is determined whether the difference between the measured liquid level n of the detection tank 16 and the nominal liquid level n1 of the detection tank 16 satisfies n-n1≥y1 (y1 is defined as a first preset difference value, and the first preset difference value refers to the minimum difference between the measured liquid level n of the detection tank 16 and the nominal liquid level n1 of the detection tank 16 that satisfies that the cooling system 100 can enter the next step), and when n-n1<y1, the heat exchange medium supplement mode is entered.

[0100] When n-n1≥y1, the cooling system 100 enters the heat exchange mode, the heat exchange medium can exchange heat with the heat exchange assembly 19, and the heat exchange efficiency and effect of the heat exchange medium can be ensured, so as to realize effective heat exchange of the battery through the heat exchange medium.

[0101] The working processes of the cooling system 100 entering different modes are described below.

[0102] When the cooling system 100 receives an instruction to supplement the heat exchange medium, it starts to enter the heat exchange medium supplement mode and performs the following operations: first, the heat exchange medium in the detection tank 16 is discharged into the heat exchange flow path 101, as shown in FIG. 6, the second on-off valve 7 and the fourth on-off valve 9 are opened, and the remaining on-off valves are closed to connect the detection tank outlet 162 with the heat exchange flow path 101, the first valve body 21 is switched to communicate the first connecting port a and the third connecting port c, the second drive pump 1 is opened to make the heat exchange medium in the detection tank 16 flow into the heat exchange flow path 101, and the first flow meter 4 is opened to detect the flow of the heat exchange medium flowing out of the detection tank 16. Figure 3

[0103] When the first flow meter 4 detects that the flow of the heat exchange medium is 0, the heat exchange medium is supplemented, as shown in FIG. 7, the second on-off valve 7 and the fourth on-off valve 9 are opened, and the remaining on-off valves are closed to connect the detection tank outlet 162 with the heat exchange flow path 101, the first valve body 21 is switched to communicate the first connecting port a and the third connecting port c, the second drive pump 1 is opened to make the heat exchange medium in the detection tank 16 flow into the heat exchange flow path 101, and the first flow meter 4 is opened to detect the flow of the heat exchange medium flowing out of the detection tank 16. Figure 4 ​As shown, at this time, the seventh on-off valve 12 is opened to connect the liquid supplement tank 15 with the heat exchange flow path 101, the second on-off valve 7 is closed to prevent new heat exchange medium from flowing into the detection tank 16, the fourth on-off valve 9 is opened, and the rest of the on-off valves are closed. The first valve body 21 is in a state of connecting the first connection port a and the third connection port c, and the second driving pump 1 is opened to enable the new heat exchange medium in the liquid supplement tank 15 to flow into the heat exchange flow path 101 through the seventh on-off valve 12. The liquid supplement tank 15 starts to supplement liquid into the cooling system 100. The liquid level sensor in the liquid supplement tank 15 detects the liquid level. The initial liquid level of the new heat exchange medium in the liquid supplement tank 15 before liquid supplement is L1, and the target liquid level of the new heat exchange medium in the liquid supplement tank 15 after liquid supplement is L2, and L2 = L1-[(d1 / d2)^2(n1-n)+4β / πd2^2]. It should be noted that d1 is the inner diameter of the detection tank 16, d2 is the inner diameter of the liquid supplement tank 15, and β is the pipeline residual amount. When the liquid level sensor detects that the target liquid level of the new heat exchange medium in the liquid supplement tank 15 reaches the target liquid level L2, the seventh on-off valve 12 is closed, and the cooling system 100 enters the heat exchange mode.

[0104] When the cooling system 100 receives an instruction to replace the heat exchange medium, it starts to enter the heat exchange medium replacement mode. First, the cooling system 100 needs to discharge the unqualified heat exchange medium from the heat exchange flow path 101, as shown in FIG. 6. Figure 5 As shown, at this time, the second on-off valve 7, the third on-off valve 8, and the fifth on-off valve 14 are opened, the rest of the on-off valves are closed, and the first valve body 21 is switched to connect the first connection port a and the third connection port c. The second driving pump 1 is opened, the unqualified heat exchange medium in the detection tank 16 flows into the heat exchange flow path 101, and the third driving pump 3 is opened to drive the unqualified heat exchange medium to flow into the recovery tank 17. The opening of the third on-off valve 8 can ensure that the heat exchange medium in the flow path between the second connection port b and the detection tank inlet 161 can be extracted to prevent the unqualified heat exchange medium from remaining.

[0105] At the same time, the first flow meter 4 can detect the flow of the heat exchange medium flowing out of the detection tank 16. When the first flow meter 4 detects that the flow is 0, the second driving pump 1 is closed. The second flow meter 6 can detect the flow of the heat exchange medium flowing to the recovery tank 17. When the second flow meter 6 detects that the flow is 0, the third driving pump 3 is closed, and the fifth on-off valve 14 is closed to complete the recovery of the unqualified heat exchange medium.

[0106] After completing the recovery of the unqualified heat exchange medium, in order to prevent the existence of gas in the battery heat exchange system 20 and the cooling system 100, the battery heat exchange system 20 and the cooling system 100 are vacuumized through the vacuumizing flow path 104, as shown in FIG. 8. Figure 6As shown, at this time, the seventh on-off valve 12 is closed to disconnect the liquid supplement tank 15, the battery heat exchange system 20 is connected with the cooling system 100, the first connecting port a and the third connecting port c of the first valve body 21 are communicated, the vacuum pump 18 is opened to vacuumize the battery heat exchange system 20 and the cooling system 100, and the pressure sensor 10 is opened to detect the pressure value, when the pressure value detected by the pressure sensor 10 reaches the target pressure value P1, the sixth on-off valve 13 is closed, the vacuum pump 18 is closed, and the vacuumization of the battery heat exchange system 20 and the cooling system 100 is completed.

[0107] Further, after the vacuumization is completed, the heat exchange medium is supplemented, at this time, the working principle of the cooling system 100 is the same as the working principle of the cooling system 100 entering the heat exchange medium supplement mode described above, and it needs to be explained that, at this time, the target liquid level L2 of the liquid supplement tank 15 after the liquid supplement satisfies the following relationship: L2=L1-[n1·(d1 / d2)^2+4β / πd2^2], when the target liquid level of the new heat exchange medium in the liquid supplement tank 15 reaches the target liquid level L2, the seventh on-off valve 12 is closed, and the liquid supplement operation is completed, thereby realizing the replacement of the heat exchange medium.

[0108] When the cooling system 100 completes the detection of the heat exchange medium and the heat exchange medium satisfies the heat exchange demand, the cooling system 100 can enter the heat exchange mode, correspondingly, when the cooling system 100 completes the liquid supplement or replacement of the heat exchange medium, the cooling system 100 can enter the heat exchange mode, in addition, when the cooling system 100 directly receives the heat exchange instruction, the cooling system 100 can enter the heat exchange mode.

[0109] When the cooling system 100 enters the heat exchange mode, the heat exchange assembly 19 starts to work, as shown in the figure, Figure 7 At this time, the first on-off valve 11 and the fourth on-off valve 9 are opened to connect the battery heat exchange system 20 with the cooling system 100, the heat exchange medium of the battery heat exchange system 20 can flow into the cooling system 100, the first connecting port a and the third connecting port c of the first valve body 21 are communicated, the first driving pump 2 and the second driving pump 1 are opened to make the heat exchange medium flow in the heat exchange flow path 101 and exchange heat with the heat exchange assembly 19, the heat exchanged heat exchange medium flows into the battery heat exchange system 20 again and exchanges heat with the battery, and the cycle is repeated to ensure the heat exchange efficiency and heat exchange effect of the battery.

[0110] When the heat exchange is completed, the cooling system 100 discharges the heat exchange medium back to the battery heat exchange system 20, and at the same time, the cooling system 100 is in standby mode, and the specific working principle is as follows:

[0111] As shown in the figure, Figure 8As shown, at this time, the fourth on-off valve 9 is opened, the heat exchange system inlet and the outlet end 103 are communicated, the remaining on-off valves are closed, the first connecting port a of the first valve body 21 is communicated with the third connecting port c, the first driving pump 2 and the second driving pump 1 are operated, the driving heat exchange medium flows back to the battery heat exchange system 20, and the second flow meter 6 can detect the flow of the heat exchange medium flowing to the battery heat exchange system 20. When the second flow meter 6 detects that the flow is 0, the fourth on-off valve 9 is closed, so as to realize the delivery of the heat exchange medium back to the battery heat exchange system 20.

[0112] Further, in order to prevent the heat exchange medium in the cooling system 100 from being left, it is necessary to recycle the heat exchange medium again. The working principle is the same as that of recycling the unqualified heat exchange medium, which will not be repeated here.

[0113] After the heat exchange medium is recycled, there may be gas in the flow path of the cooling system 100. In order to ensure the vacuum degree in the cooling system 100, the cooling system 100 needs to be vacuumized. As shown in the figure, Figure 9 As shown, at this time, the second on-off valve 7, the third on-off valve 8 and the sixth on-off valve 13 are opened, and the remaining on-off valves are closed. When the pressure sensor 10 detects that the pressure value reaches P1, the sixth on-off valve 13 is closed, and the cooling system 100 enters the standby state.

[0114] In other embodiments of the present application, the battery heat exchange system 20 can directly send a heat exchange medium alarm signal to the cooling system 100. After the user agrees to supplement or replace the heat exchange medium, the cooling system 100 can selectively communicate the detection tank 16 or the recycling tank 17 or the liquid supplement tank 15 or the vacuumizing flow path 104 with the heat exchange flow path 101, so as to realize the vacuumizing of the heat exchange flow path 101 or the detection, recycling, supplementing or replacing of the heat exchange medium.

[0115] The charging device according to the present application comprises the above-mentioned cooling system 100. Since the charging device is provided with the above-mentioned cooling system 100, the charging device can detect, supplement, replace and the like of the heat exchange medium of the battery heat exchange system 20, so as to ensure the quality and filling amount of the heat exchange medium, reduce the maintenance cost of the battery heat exchange system 20, and at the same time, the cooling system 100 is also provided with the heat exchange assembly 19. The heat exchange medium can be heat exchanged with the heat exchange assembly 19, so as to improve the heat exchange efficiency and heat exchange effect of the heat exchange medium on the battery.

[0116] Further, the charging device can be used to charge the battery, wherein the charging mode of the charging device and the heat exchange mode can be started at the same time, or the heat exchange mode of the cooling system 100 is started after the charging mode of the charging device is started, so as to heat exchange the battery when the battery is charging, improve the heat exchange efficiency of the heat exchange medium on the battery, ensure the stability of the battery temperature, and at the same time, without starting the heat exchange function of the battery heat exchange system 20, save the energy of the battery heat exchange system 20.

[0117] In some embodiments of the present application, the battery heat exchange system 20 can be applied to a car, the charging device can be configured as a charging pile, the cooling system 100 of the charging pile can store the nominal filling amount information and quality information of the heat exchange medium of the on-the-market vehicle model, the user can manually input the vehicle model information before charging the car at the charging pile, and the charging pile can also read the vehicle model information by itself, so as to retrieve the nominal filling amount information and quality information of the heat exchange medium of the corresponding vehicle model. The charging device can automatically detect, supplement or replace the heat exchange medium in the battery heat exchange system 20 of the car, so as to ensure the filling amount and quality of the heat exchange medium, thereby ensuring the heat exchange efficiency of the heat exchange medium on the battery and reducing the maintenance cost of the car.

[0118] The car can also directly send a charging signal to the charging pile, without detecting, recycling, supplementing or replacing the heat exchange medium, further improving the flexibility of the charging pile and saving time.

[0119] In addition, the cooling system 100 of the charging pile can also be connected with the water cooling system of the car air conditioner, and the cooling system 100 of the charging pile can exchange heat with the water cooling system of the car air conditioner, thereby improving the heat exchange efficiency of the water cooling system of the car air conditioner and reducing the energy loss of the car.

[0120] It should be noted that the above charging device configured as a charging pile and the battery heat exchange system 20 applied to a car are only one embodiment of the present application, and cannot be understood as a limitation of the present application.

[0121] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0122] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely divergences of the principles and application of the present application and that numerous modifications, changes, substitutions, and alterations can be made thereto without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. A cooling system, characterized by, The application relates to a battery heat exchange system (20) comprising: a heat exchange flow path (101) having an inlet end (102), an outlet end (103), a first valve body (21) and a first driving pump (2), the inlet end (102) is adapted to communicate with a heat exchange system outlet of the battery heat exchange system (20), the outlet end (103) is adapted to communicate with a heat exchange system inlet of the battery heat exchange system (20), the first valve body (21) has a first connecting port (a), a second connecting port (b) and a third connecting port (c) which selectively communicate, the first connecting port (a) also selectively communicates with the inlet end (102), the third connecting port (c) also selectively communicates with the outlet end (103), and the first driving pump (2) is used for driving a heat exchange medium in the heat exchange flow path (101) to flow along the heat exchange flow path (101); a detection tank (16) used for detecting information of the heat exchange medium, the detection tank (16) has a detection tank inlet (161) and a detection tank outlet (162), the detection tank inlet (161) selectively communicates with the second connecting port (b), and the detection tank outlet (162) selectively communicates with the first connecting port (a); the detection tank (16) is provided with a component detection sensor and an impurity detection sensor; a heat exchange assembly (19) adapted to heat exchange with the heat exchange flow path (101) so as to heat or cool the heat exchange medium in the heat exchange flow path (101).

2. The cooling system of claim 1, wherein, The heat exchange flow path (101) further has a first on-off valve (11) connected between the inlet end (102) and the first connecting port (a).

3. The cooling system of claim 2, wherein, The heat exchange flow path (101) further has a second driving pump (1) used for driving the heat exchange medium in the heat exchange flow path (101) to flow along the heat exchange flow path (101), the second driving pump (1) is connected between the first on-off valve (11) and the first connecting port (a), and a second on-off valve (7) is connected between the detection tank outlet (162) and a pump inlet of the second driving pump (1).

4. The cooling system of claim 3, wherein, The heat exchange flow path (101) further has a first flow meter (4) connected between the second driving pump (1) and the first connecting port (a).

5. The cooling system of claim 1, wherein, A third on-off valve (8) is connected between the detection tank inlet (161) and the second connecting port (b).

6. The cooling system of claim 1, wherein, The heat exchange flow path (101) further has a fourth on-off valve (9) connected between the outlet end (103) and the third connecting port (c).

7. The cooling system of claim 6, wherein, The first driving pump (2) is connected between the fourth on-off valve (9) and the third connecting port (c).

8. The cooling system of claim 7, wherein, The heat exchange flow path (101) further has a second flow meter (6) connected between the first driving pump (2) and the fourth on-off valve (9).

9. Cooling system according to any of claims 1-8, characterized in that, The application further comprises: a liquid supplement tank (15), and a liquid supplement tank (15) outlet of the liquid supplement tank (15) selectively communicates with the heat exchange flow path (101).

10. Cooling system according to any of claims 1-8, characterized in that, Further comprising: a recovery tank (17), a fifth on-off valve (14) being connected between a recovery tank (17) inlet of the recovery tank (17) and the third connection port (c).

11. The cooling system of claim 10, wherein, Further comprising: a third drive pump (3) being connected between the fifth on-off valve (14) and the third connection port (c).

12. The cooling system of claim 11, wherein, Further comprising: a third flow meter (5) being connected between the third drive pump (3) and the fifth on-off valve (14).

13. Cooling system according to any of claims 1-8, characterized in that, Further comprising: a vacuum pumping flow path (104) for pumping gas in the cooling system and the battery heat exchange system (20).

14. The cooling system of claim 13, wherein, The vacuum pumping flow path (104) comprises: a vacuum pump (18) and a sixth on-off valve (13) being connected between the vacuum pump (18) and the heat exchange flow path (101) to connect or disconnect the vacuum pump (18) and the heat exchange flow path (101).

15. The cooling system of claim 14, wherein, The vacuum pumping flow path (104) further comprises: a pressure sensor (10) for detecting pressure in the vacuum pumping flow path (104).

16. A charging device, characterized by The cooling system according to any one of claims 1-15.

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