A dielectric temperature control device for testing battery temperature control systems

Abstract

This invention relates to a medium temperature control device for testing battery temperature control systems. It includes a compressor, with the compressor's medium outlet connected to the battery temperature control system's medium inlet. A condensation unit and a cooling capacity regulating valve, a heating unit and a heat control valve, and a heat regulation unit and a heat regulation valve are respectively installed between them. An inlet pressure sensor and an inlet temperature sensor are also provided. The battery temperature control system's medium outlet is connected to the compressor's medium inlet, and the battery temperature control system's medium outlet is equipped with an outlet pressure sensor and an outlet temperature sensor. This device circulates the medium through the compressor, eliminating the need for a circulation pump and reducing energy consumption. Simultaneously, the medium enters the battery temperature control system directly, bypassing the plate heat exchanger, thus reducing energy loss caused by heat exchange on the plate heat exchanger. Furthermore, different temperatures can be obtained by adjusting the cooling capacity regulating valve, heat control valve, and heat regulation valve, making temperature adjustment convenient and covering a wide temperature range.

Description

Technical Field

[0001] This invention relates to the field of new energy battery technology, and specifically to a medium temperature control device used in battery temperature control system testing. Background Technology

[0002] New energy batteries are widely used for energy storage and powering new energy vehicles. To ensure stable operation, new energy batteries typically have a temperature control system to monitor their operating temperature. When the operating temperature is too high, the system will cool down the battery; when the operating temperature is too low, the system will heat it up.

[0003] Therefore, the temperature control system of new energy batteries is generally tested when they leave the factory. The temperature control device for the battery temperature control system test currently mostly adopts a coolant circulation system, which is equipped with a compressor, condenser, and plate heat exchanger. The compressor compresses the refrigerant, the refrigerant is condensed by the condenser, and evaporates in the plate heat exchanger. Heat is exchanged between the plate heat exchanger and the medium of the battery temperature control system, so that the medium of the battery temperature control system reaches the temperature required for testing.

[0004] This method of heat exchange using plate heat exchangers often results in energy loss during the heat exchange process; at the same time, in order to make the medium of the battery temperature control system flow, a circulation pump is often set up, which also leads to energy consumption. Summary of the Invention

[0005] Therefore, the present invention provides a medium temperature control device for battery temperature control system testing, which mainly solves the technical problem of energy loss caused by the use of plate heat exchangers for heat exchange in the existing battery temperature control system testing.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A medium temperature control device for testing a battery temperature control system includes a compressor; the compressor's medium outlet end is provided with a first inlet pipe; the first inlet pipe is simultaneously connected to one end of a condenser pipe, a heating pipe, and a temperature regulating pipe, the other end of the condenser pipe, the heating pipe, and the temperature regulating pipe is connected to one end of a second inlet pipe, and the other end of the second inlet pipe is connected to the medium inlet of the battery temperature control system; the battery temperature control system's medium outlet is connected to a first outlet pipe; the first outlet pipe is connected to the compressor's medium inlet end; the condenser pipe is sequentially provided with a condensation unit and a cooling capacity regulating valve along the medium flow direction; the heating pipe is sequentially provided with a heating unit and a heat control valve along the medium flow direction; the temperature regulating pipe is sequentially provided with a heat regulating unit and a heat regulating valve along the medium flow direction; the second inlet pipe is provided with an inlet pressure sensor and an inlet temperature sensor; the first outlet pipe is provided with an outlet pressure sensor and an outlet temperature sensor; the condensation unit includes an expansion valve and a condenser sequentially arranged on the condenser pipe along the medium flow direction; the heating unit is the heating pipe; the heat regulating unit is the expansion valve arranged on the temperature regulating pipe.

[0008] Preferably, the second inlet pipe is equipped with an inlet solenoid valve.

[0009] Preferably, the first outlet pipe is equipped with an outlet solenoid valve.

[0010] Preferably, it further includes a second outlet pipe, a third outlet pipe, and an evaporator pipe; one end of the second outlet pipe and the evaporator pipe are simultaneously connected to the first outlet pipe, and the other end is connected to one end of the third outlet pipe; the other end of the third outlet pipe is connected to the compressor medium inlet end; the second outlet pipe is provided with a hot / cold switching valve; the evaporator pipe is provided with an evaporation regulating valve and an evaporation unit in sequence along the medium flow direction; the evaporation unit is an evaporator installed on the evaporator pipe.

[0011] Optionally, the device also includes a filling pipe connected to the first outlet pipe for filling the device with a medium; the filling pipe is equipped with a filling solenoid valve.

[0012] Preferably, the filling tube is further provided with a one-way filling valve.

[0013] Optionally, it also includes an empty pipe and a filling / emptying pipe; one end of the filling / emptying pipe is connected to the first outlet pipe, and the other end is connected to both the filling pipe and the empty pipe; the empty pipe is connected to a vacuum pump; and an empty solenoid valve is provided on the empty pipe.

[0014] Preferably, the vent pipe is also equipped with a one-way vent valve.

[0015] Preferably, the compressor is a variable frequency compressor.

[0016] Preferably, the system further includes a control unit; the control unit is electrically connected to the compressor, cooling capacity regulating valve, heat control valve, heat regulating valve, inlet pressure sensor, inlet temperature sensor, inlet solenoid valve, outlet solenoid valve, outlet pressure sensor, outlet temperature sensor, cooling / heat switching valve, and evaporation regulating valve, respectively; the control unit acquires the values ​​of the inlet pressure sensor, inlet temperature sensor, outlet pressure sensor, and outlet temperature sensor, and controls the operation of the compressor, cooling capacity regulating valve, heat control valve, heat regulating valve, inlet solenoid valve, outlet solenoid valve, cooling / heat switching valve, and evaporation regulating valve.

[0017] The present invention has at least the following beneficial effects:

[0018] It is equipped with a compressor, and the compressor medium outlet end is connected to the medium inlet of the battery temperature control system. A condensing unit and a cold capacity regulating valve, a heating unit and a heat control valve, and a heat regulating unit and a heat regulating valve are respectively installed between the compressor medium outlet end and the battery temperature control system medium inlet end. An inlet pressure sensor and an inlet temperature sensor are installed at the medium inlet end of the battery temperature control system. The medium outlet of the battery temperature control system is connected to the compressor medium inlet end, and an outlet pressure sensor and an outlet temperature sensor are installed at the medium outlet end of the battery temperature control system. This device circulates the medium using a compressor, eliminating the need for a circulation pump and reducing energy consumption. Simultaneously, the medium enters the battery temperature control system directly, bypassing the plate heat exchanger and minimizing energy loss associated with heat exchange on the plate heat exchanger. When a low-temperature medium is required, the heat control valve is closed, and the cooling and heating valves are adjusted to obtain different low-temperature media. Conversely, when a high-temperature medium is required, the heat control valve is closed, and the cooling and heating valves are adjusted to obtain different high-temperature media. Temperature adjustment is convenient, and the temperature range is wide, meeting the battery temperature control system's requirements for different medium temperatures. Furthermore, the compressor is a variable frequency compressor; the frequency of the variable frequency compressor is adjusted by obtaining the values ​​from the inlet pressure and temperature sensors, as well as the outlet pressure and temperature sensors, resulting in more accurate medium temperature control.

[0019] Therefore, the medium temperature control device of the present invention for testing battery temperature control systems has the advantages of simple structure, easy implementation, cost saving, energy saving, reduced energy loss, ability to provide media of different temperatures, and wide applicability. Attached Figure Description

[0020] To more clearly illustrate the prior art and the present invention, the accompanying drawings used in the description of the prior art and the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely exemplary, and those skilled in the art can derive other drawings from the provided drawings without any creative effort.

[0021] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the conditions under which the present invention can be implemented. Any modifications to the structure, changes in the proportions, or adjustments to the size, without affecting the effects and objectives that the present invention can produce, should still fall within the scope of the technical content disclosed herein.

[0022] Figure 1 This is a schematic diagram of a medium temperature control device for testing battery temperature control systems according to the present invention;

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Control unit; 2. Compressor; 3. Condensing unit; 4. Cooling capacity regulating valve; 5. Heating unit; 6. Heat control valve; 7. Heat regulating unit; 8. Heat regulating valve; 9. Inlet solenoid valve; 10. Outlet solenoid valve; 11. Cooling / heating switching valve; 12. Evaporation regulating valve; 13. Evaporation unit; 14. Charging check valve; 15. Charging solenoid valve; 16. Exhaust solenoid valve; 17. Exhaust check valve; 18. Vacuum pump; 19. Inlet pressure sensor; 20. Inlet temperature sensor; 21. Outlet pressure sensor; 22. Outlet temperature sensor; 23. First inlet pipe; 24. Condensing pipe; 25. Heating pipe; 26. Temperature regulating pipe; 27. Second inlet pipe; 28. First outlet pipe; 29. ​​Second outlet pipe; 30. Third outlet pipe; 31. Evaporation pipe; 32. Charging / discharging pipe; 33. Charging pipe; 34. Exhaust pipe; 35. First tee; 36. Second tee; 37. Battery. Detailed Implementation

[0025] The present application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0026] In the description of this application: unless otherwise stated, "a plurality of" means two or more. The terms "first," "second," "third," etc., in this application are intended to distinguish the objects referred to and do not have any special meaning in terms of technical connotation (e.g., they should not be construed as an emphasis on importance or order). Expressions such as "comprising," "including," and "having" also mean "not limited to" (certain units, components, materials, steps, etc.).

[0027] The terms used in this application, such as "upper," "lower," "left," "right," and "middle," are generally used to facilitate intuitive understanding by referring to the accompanying drawings, and are not absolute limitations on the positional relationships in the actual product. Changes in these relative positional relationships, without departing from the technical concept disclosed in this application, should also be considered within the scope of this application.

[0028] The present invention provides a dielectric temperature control device for testing battery temperature control systems, such as... Figure 1 As shown, a compressor 2 is installed. The compressor 2's medium outlet is connected to a first inlet pipe 23. The first inlet pipe 23 is simultaneously connected to one end of a condenser pipe 24, a heating pipe 25, and a temperature regulating pipe 26 via a first tee 35. The other end of the condenser pipe 24, heating pipe 25, and temperature regulating pipe 26 is connected to one end of a second inlet pipe 27 via a second tee 36. The other end of the second inlet pipe 27 is connected to the medium inlet of the battery temperature control system for temperature regulation of the battery 37. The battery temperature control system's medium outlet is connected to a first outlet pipe 28, which is connected to the compressor 2's medium inlet. The condenser pipe 24 flows along the medium flow direction... The condensing unit 3 and the cooling capacity regulating valve 4 are arranged in sequence. The heating tube 25 is arranged in sequence with the heating unit 5 and the heat control valve 6 along the medium flow direction. The temperature regulating tube 26 is arranged in sequence with the heat regulating unit 7 and the heat regulating valve 8 along the medium flow direction. The second inlet tube 27 is equipped with the inlet pressure sensor 19 and the inlet temperature sensor 20. The first outlet tube 28 is equipped with the outlet pressure sensor 21 and the outlet temperature sensor 22. The condensing unit 3 includes an expansion valve and a condenser arranged in sequence on the condensing tube 24 along the medium flow direction. The heating unit 5 is the heating tube 25. The heat regulating unit 7 is the expansion valve arranged on the temperature regulating tube 26.

[0029] Preferably, an inlet solenoid valve 9 is provided on the second inlet pipe 27.

[0030] Preferably, an outlet solenoid valve 10 is provided on the first outlet pipe 28.

[0031] Preferably, in order to ensure that the refrigerant in the return compressor 2 is fully vaporized and to prevent the liquid refrigerant from flowing back into the compressor 2 and causing damage to the compressor, the compressor further includes a second outlet pipe 29, a third outlet pipe 30, and an evaporator pipe 31. One end of the second outlet pipe 29 and the evaporator pipe 31 are connected to the first outlet pipe 28, and the other end is connected to one end of the third outlet pipe 30. The other end of the third outlet pipe 30 is connected to the medium inlet end of the compressor 2. The second outlet pipe 29 is provided with a hot / cold switching valve 11. The evaporator pipe 31 is provided with an evaporation regulating valve 12 and an evaporation unit 13 in sequence along the medium flow direction. The evaporation unit 13 is an evaporator installed on the evaporator pipe 31.

[0032] Optionally, to facilitate the addition of a medium to the device of this application, a filling pipe 33 connected to the first outlet pipe 28 is also included, and the filling pipe 33 is equipped with a filling solenoid valve 15.

[0033] Preferably, to prevent leakage of the medium inside the device of this application, the filling pipe 33 is also provided with a filling check valve 14.

[0034] Optionally, in order to evacuate the device of this application and prevent the medium from containing air and affecting the system function, it also includes an evacuation pipe 34 and a filling and evacuation pipe 32. One end of the filling and evacuation pipe 32 is connected to the first outlet pipe 28, and the other end is connected to both the filling pipe 33 and the evacuation pipe 34. The evacuation pipe 34 is connected to the vacuum pump 18, and an evacuation solenoid valve 16 is provided on the evacuation pipe 34.

[0035] Preferably, the vent pipe 34 is also equipped with a vent check valve 17.

[0036] Preferably, to improve the precise control of the medium temperature by the device of this application, the compressor 2 is a variable frequency compressor.

[0037] Preferably, the system also includes a control unit 1, which is electrically connected to the compressor 2, the cooling capacity regulating valve 4, the heat control valve 6, the heat regulation valve 8, the inlet pressure sensor 19, the inlet temperature sensor 20, the inlet solenoid valve 9, the outlet solenoid valve 10, the outlet pressure sensor 21, the outlet temperature sensor 22, the cooling / heat switching valve 11, and the evaporation regulating valve 12. The control unit 1 acquires the values ​​of the inlet pressure sensor 19, the inlet temperature sensor 20, the outlet pressure sensor 21, and the outlet temperature sensor 22, and controls the operation of the compressor 2, the cooling capacity regulating valve 4, the heat control valve 6, the heat regulation valve 8, the inlet solenoid valve 9, the outlet solenoid valve 10, the cooling / heat switching valve 11, and the evaporation regulating valve 12.

[0038] The working principle is as follows:

[0039] 1) Vacuuming: Open the cooling capacity regulating valve, heat control valve, heat regulating valve, inlet solenoid valve, outlet solenoid valve, and cooling / heat switching valve; evaporation regulating valve; venting solenoid valve; close the charging solenoid valve; start the vacuum pump to evacuate the device of this application.

[0040] 2) Injecting the medium: Continue the above steps, close the venting solenoid valve; open the charging solenoid valve; inject the medium into the device of this application; and then close the charging solenoid valve.

[0041] 3) Thermal medium temperature control of the battery temperature control system: The control unit opens the inlet battery valve, outlet solenoid valve, and evaporator regulating valve; closes the heat regulating valve and the cooling / heating switching valve; based on the temperature required by the temperature control system, the control unit controls the size of the cooling capacity regulating valve and the heat control valve; the control unit obtains the values ​​from the inlet pressure sensor and inlet temperature sensor. If they match the temperature required by the temperature control system, the control unit does not adjust the size of the cooling capacity regulating valve and the heat control valve; if they do not match, the control unit continues to adjust the size of the cooling capacity regulating valve and the heat control valve; the control unit obtains the values ​​from the outlet pressure sensor and outlet temperature sensor, and adjusts the frequency of the inverter compressor to increase or decrease the cooling capacity so that the medium accurately reaches the temperature required by the temperature control system.

[0042] 4) Cooling medium temperature control of the battery temperature control system: The control unit opens the inlet battery valve, outlet solenoid valve, and cooling / heating switching valve; closes the heat control valve and evaporation regulating valve; based on the temperature required by the temperature control system, the control unit controls the size of the cooling capacity regulating valve and the heat control valve; the control unit obtains the values ​​from the inlet pressure sensor and inlet temperature sensor. If they match the temperature required by the temperature control system, the control unit does not adjust the size of the cooling capacity regulating valve and the heat control valve; if they do not match, the control unit continues to adjust the size of the cooling capacity regulating valve and the heat control valve; the control unit obtains the values ​​from the outlet pressure sensor and outlet temperature sensor and adjusts the frequency of the inverter compressor to increase or decrease the cooling capacity.

[0043] The present application has been described in a relatively specific and detailed manner above through general descriptions and specific embodiments. It should be understood that, based on the technical concept of the present application, several conventional adjustments or further innovations can be made to these specific embodiments; however, as long as they do not depart from the technical concept of the present application, the technical solutions obtained by these conventional adjustments or further innovations also fall within the protection scope of the claims of the present application.

Claims

1. A medium temperature control device for testing battery temperature control systems, comprising a compressor (2), characterized in that, The compressor (2) has a first inlet pipe (23) at its medium outlet end; the first inlet pipe (23) is connected to one end of the condenser pipe (24), the heating pipe (25), and the temperature regulating pipe (26), and the other end of the condenser pipe (24), the heating pipe (25), and the temperature regulating pipe (26) is connected to one end of the second inlet pipe (27), and the other end of the second inlet pipe (27) is connected to the medium inlet of the battery temperature control system; the battery temperature control system has a first outlet pipe (28) connected to its medium outlet end; the first outlet pipe (28) is connected to the medium inlet end of the compressor (2); the condenser pipe (24) has a condenser unit (3) and a cooling capacity regulating valve (4) arranged sequentially along the medium flow direction; the heating pipe (25) A heating unit (5) and a heat control valve (6) are arranged sequentially along the medium flow direction; a heat regulating unit (7) and a heat regulating valve (8) are arranged sequentially along the medium flow direction of the temperature regulating pipe (26); an inlet pressure sensor (19) and an inlet temperature sensor (20) are arranged on the second inlet pipe (27); an outlet pressure sensor (21) and an outlet temperature sensor (22) are arranged on the first outlet pipe (28); the condensing unit (3) includes an expansion valve and a condenser arranged sequentially on the condensing pipe (24) along the medium flow direction; the heating unit (5) is the heating pipe (25); the heat regulating unit (7) is the expansion valve arranged on the temperature regulating pipe (26).

2. The dielectric temperature control device for battery temperature control system testing according to claim 1, characterized in that, An inlet solenoid valve (9) is provided on the second inlet pipe (27).

3. The dielectric temperature control device for battery temperature control system testing according to claim 2, characterized in that, An outlet solenoid valve (10) is provided on the first outlet pipe (28).

4. A dielectric temperature control device for testing battery temperature control systems according to claim 2 or 3, characterized in that, It also includes a second outlet pipe (29), a third outlet pipe (30), and an evaporator pipe (31); one end of the second outlet pipe (29) and the evaporator pipe (31) are connected to the first outlet pipe (28), and the other end is connected to one end of the third outlet pipe (30); the other end of the third outlet pipe (30) is connected to the medium inlet end of the compressor (2); the second outlet pipe (29) is provided with a hot and cold switching valve (11); the evaporator pipe (31) is provided with an evaporation regulating valve (12) and an evaporation unit (13) in sequence along the medium flow direction; the evaporation unit (13) is an evaporator installed on the evaporator pipe (31).

5. A dielectric temperature control device for testing battery temperature control systems according to claim 4, characterized in that, It also includes a filling pipe (33) connected to the first outlet pipe (28) for filling the device with a medium; the filling pipe (33) is equipped with a filling solenoid valve (15).

6. A dielectric temperature control device for testing battery temperature control systems according to claim 5, characterized in that, The filling tube (33) is also equipped with a one-way filling valve (14).

7. A dielectric temperature control device for testing battery temperature control systems according to claim 5, characterized in that, It also includes an empty pipe (34) and a filling and emptying pipe (32); one end of the filling and emptying pipe (32) is connected to the first outlet pipe (28), and the other end is connected to the filling pipe (33) and the empty pipe (34); the empty pipe (34) is connected to the vacuum pump (18); an emptying solenoid valve (16) is provided on the empty pipe (34).

8. A dielectric temperature control device for testing battery temperature control systems according to claim 7, characterized in that, The drain pipe (34) is also equipped with a drain check valve (17).

9. A dielectric temperature control device for testing battery temperature control systems according to claim 4, characterized in that, The compressor (2) is a variable frequency compressor.

10. A dielectric temperature control device for testing battery temperature control systems according to claim 9, characterized in that, It also includes a control unit (1); the control unit (1) is electrically connected to the compressor (2), the cooling capacity regulating valve (4), the heat control valve (6), the heat regulating valve (8), the inlet pressure sensor (19), the inlet temperature sensor (20), the inlet solenoid valve (9), the outlet solenoid valve (10), the outlet pressure sensor (21), the outlet temperature sensor (22), the cooling and heating switching valve (11), and the evaporation regulating valve (12); the control unit (1) obtains the values ​​of the inlet pressure sensor (19), the inlet temperature sensor (20), the outlet pressure sensor (21), and the outlet temperature sensor (22), and controls the operation of the compressor (2), the cooling capacity regulating valve (4), the heat control valve (6), the heat regulating valve (8), the inlet solenoid valve (9), the outlet solenoid valve (10), the cooling and heating switching valve (11), and the evaporation regulating valve (12).

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