Energy-saving ultra-low temperature precise temperature control heat exchange system

Abstract

The application discloses an energy-saving ultra-low-temperature precision temperature control heat exchange system, and belongs to the field of ultra-low-temperature temperature control heat exchange systems. The energy-saving ultra-low-temperature precision temperature control heat exchange system comprises a supporting assembly, a high-temperature stage refrigeration mechanism is installed on one side of the supporting assembly, a low-temperature stage refrigeration mechanism is installed on the surface of the high-temperature stage refrigeration mechanism, and a cooling mechanism is installed on the surface of the low-temperature stage refrigeration mechanism. Based on the cooperation of the low-temperature stage refrigeration mechanism, the cooling mechanism and other structures, the coolant in the cooling mechanism is circulated in the cooling pipe, the temperature in the test box is controlled, the basic refrigeration load is borne by the cooling mechanism, the low-temperature stage refrigeration mechanism serves as temperature compensation, the start-stop frequency of the low-temperature compressor is reduced, the energy consumption of the compressor and the influence of multiple starts and stops on the compressor are reduced, the low-temperature stage refrigeration mechanism or the cooling mechanism is automatically switched, the cooling mechanism is preferentially used, the low-temperature stage refrigeration mechanism is used when necessary, and step-by-step energy saving is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of ultra-low temperature temperature control heat exchange systems, in particular to an energy-saving ultra-low temperature precision temperature control heat exchange system. BACKGROUND

[0002] A temperature control heat exchange system is a device system that achieves energy balance through heat transfer and precise temperature control, widely used in industrial production, heating, ventilation and air conditioning, medical equipment, new energy and other fields. Its core function is to achieve heat transfer between two or more fluids (liquid, gas) through a heat exchanger (such as a heat exchanger), and to stabilize the temperature of the target fluid within the set range through a temperature control device.

[0003] A battery test system is a key instrument in the field of mechanical engineering for multi-dimensional detection of battery performance and safety. Its core functions include power battery charge and discharge simulation, standard working condition testing, and rapid data acquisition, with high stability, open programmable control, and auxiliary voltage / temperature testing and other expansion functions.

[0004] In the process of testing new energy batteries, the temperature in the new energy battery testing device needs to be controlled, so a temperature control heat exchange system is needed. The core requirement of the temperature control heat exchange system is high precision, wide temperature range control, and energy-saving operation.

[0005] Most existing temperature control heat exchange systems generally use a single compressor and electronic expansion valve control to achieve ultra-low temperature and hybrid energy temperature control systems through two or more stages of refrigeration cycle series connection to control the temperature during the testing of new energy batteries, avoiding the impact of high temperature on the test results of new energy batteries.

[0006] However, the above existing technology still has the following problems:

[0007] Although the above technology achieves the temperature control effect during the testing of new energy batteries through a simple structure, when temperature control is achieved through a single compressor and an electronic expansion valve, the temperature control range is narrow, the precision is limited by the valve body response speed, and the energy consumption is high, which reduces the temperature control response speed. Its role is suitable for normal temperature to low temperature, and cannot achieve ultra-low temperature effect, resulting in insufficient ultra-low temperature performance, which causes temperature fluctuations in the testing of new energy batteries due to ultra-low temperature performance, affecting the accuracy of new energy battery performance evaluation, and causing the existing technology to be unsuitable for new energy battery testing.

[0008] Therefore, the present application provides an energy-saving ultra-low temperature precision temperature control heat exchange system to solve the above problems. SUMMARY

[0009] (I) Technical problems solved

[0010] The application provides an energy-saving ultra-low-temperature precision temperature control heat exchange system, and aims at solving the problems in the background art.

[0011] (II) Technical solutions

[0012] To achieve the above object, the application provides the following technical solutions: an energy-saving ultra-low-temperature precision temperature control heat exchange system, comprising a support assembly, one side of the support assembly is provided with a high-temperature stage refrigeration mechanism, the surface of the high-temperature stage refrigeration mechanism is provided with a low-temperature stage refrigeration mechanism, and the surface of the low-temperature stage refrigeration mechanism is provided with a cooling mechanism.

[0013] The low-temperature stage refrigeration mechanism comprises condensing pipes arranged in an array on the surface of the high-temperature stage refrigeration mechanism, one side of a plurality of the condensing pipes is fixedly connected with a fixed plate in communication with the condensing pipes, one side of the fixed plate is fixedly connected with a first throttling valve through a flange plate, one end of the first throttling valve is fixedly connected with a first dry filter in communication with the first throttling valve, one end of the first dry filter is fixedly connected with a first condenser, one side of the first condenser is fixedly connected with a first communication pipe through bolts, and one side of the first communication pipe is fixedly connected with a low-temperature compressor.

[0014] As a preferred technical solution of the application, the high-temperature stage refrigeration mechanism comprises a second dry filter arranged on one side of the upper surface of the support assembly, one end of the second dry filter is fixedly connected with a second throttling valve, one end of the second throttling valve is fixedly connected with a mounting plate, one side of the mounting plate is fixedly connected with an evaporation pipe in communication with the second throttling valve and the mounting plate in an array, and the evaporation pipe is attached to the first condenser.

[0015] As a preferred technical solution of the application, the high-temperature stage refrigeration mechanism further comprises a second condenser fixedly connected to the other end of the second dry filter, one end of the second condenser is fixedly connected with a second communication pipe through bolts, one end of the second communication pipe is fixedly connected with a high-temperature compressor, the input ends of the high-temperature compressor and the low-temperature compressor are fixedly connected with an air inlet pipe through bolts, and one end of the air inlet pipe is provided with a circulating mechanism.

[0016] As a preferred technical solution of the application, the circulating mechanism comprises a gas-liquid separator fixedly connected to one end of the air inlet pipe, the input end of the gas-liquid separator is fixedly connected with a linkage pipe, and two linkage pipes are respectively provided with circulating pipes whose surfaces are fixedly connected with the condensing pipes and the evaporation pipes.

[0017] As a preferred technical scheme of the present application, the cooling mechanism comprises a liquid inlet pipe fixedly connected to the surface of the condensing pipe and communicated with the condensing pipe, the surface of the liquid inlet pipe is fixedly connected with a solenoid valve, one end of the liquid inlet pipe is fixedly connected with a flow sensor, one end of the flow sensor is fixedly connected with a conveying pipe, one end of the conveying pipe is fixedly connected with a circulating pump with an input end communicated with the conveying pipe.

[0018] As a preferred technical scheme of the present application, the cooling mechanism further comprises a cooling pipe fixedly connected to the output end of the circulating pump and communicated with the output end of the circulating pump, one end of the cooling pipe is fixedly connected with a return pipe, one end of the return pipe is fixedly connected with a one-way valve, one end of the one-way valve is fixedly connected with a connecting pipe communicated with the conveying pipe.

[0019] As a preferred technical scheme of the present application, the support assembly comprises a support base plate, the upper surface of the support base plate is fixedly connected with isolation plates corresponding to the high-temperature level refrigeration mechanism and the low-temperature level refrigeration mechanism, one side of the support base plate is fixedly connected with a support frame, the upper surface of the support frame is fixedly connected with support plates respectively fixedly connected with the first drying filter and the second drying filter in an array.

[0020] As a preferred technical scheme of the present application, the support assembly further comprises load plates fixedly connected to the opposite sides of the support frame and the support base plate in an array, the two load plates are respectively fixedly connected with corresponding gas-liquid separators, one side of the isolation plate is fixedly connected with a baffle fixedly connected with the circulating pump, the lower surfaces of the support base plate and the support frame are both provided with support seats.

[0021] As a preferred technical scheme of the present application, the support assembly further comprises a test box fixedly connected to the upper surface of the support base plate, the inside of the test box is fixedly connected with a mounting frame corresponding to the new energy battery, the upper surface of the test box is fixedly connected with temperature sensors in an array, the inside of the test box is fixedly connected with a partition plate corresponding to the cooling pipe.

[0022] As a preferred technical scheme of the present application, the cooling pipe is fixedly connected to the inside of the test box, the cooling pipe corresponds to the partition plate, the return pipe is fixedly connected with the test box, the plurality of condensing pipes are communicated through pipes, the plurality of evaporating pipes are communicated through pipes, and the gas in the condensing pipes and the evaporating pipes enters the low-temperature compressor and the high-temperature compressor respectively through the circulating pipe.

[0023] (Three) beneficial effects

[0024] Based on the cooperation of low-temperature stage refrigeration mechanism and cooling mechanism and the like, the temperature inside the test box is controlled by circulating the cooling medium in the cooling pipe, the basic refrigeration load is borne by the cooling mechanism, the low-temperature stage refrigeration mechanism is used as temperature compensation, heat exchange of the cooling mechanism and the low-temperature stage refrigeration mechanism is realized, the start-stop frequency of the low-temperature compressor is reduced, the energy consumption of the compressor is reduced, and the influence of multiple start-stop on the compressor is reduced, and the temperature during the new energy battery test process is monitored in real time through the temperature sensor, the low-temperature stage refrigeration mechanism or the cooling mechanism is automatically switched, the cooling mechanism is preferentially used, and the low-temperature stage refrigeration mechanism is used when necessary, so that step-by-step energy saving is realized, and the energy saving and precise temperature control of the temperature control heat exchange system are further realized.

[0025] Based on the setting of high-temperature stage refrigeration mechanism and low-temperature stage refrigeration mechanism and the like, the temperature width of the heat exchange system is increased through the coupling of the evaporation pipe and the condensation pipe, precise temperature control in a wide temperature range is realized, the energy-saving ultra-low-temperature precise temperature control heat exchange system is more suitable for new energy battery testing, and the flow of the refrigerant in the high-temperature stage refrigeration mechanism and the low-temperature stage refrigeration mechanism is controlled through the cooperation of the first throttling valve and the second throttling valve, so that the refrigerant flow is distributed as needed, the temperature stability is improved, and the precision of temperature control is further improved based on the flow sensor and the electromagnetic valve monitoring and flow control of the ultra-low-temperature liquid entering the cooling pipe.

[0026] Based on the setting of high-temperature stage refrigeration mechanism and low-temperature stage refrigeration mechanism and the like, the fast-adjusting refrigeration demand is calculated according to the target temperature of the new energy battery, the initial power of the low-temperature compressor and the high-temperature compressor is dynamically adjusted, and the compressor is gradually reduced to the minimum power during the temperature reduction process of the test box inside the cooling pipe, the high-energy consumption period is reduced, and the energy consumption of the compressor is optimized, so that the energy-saving ultra-low-temperature precise temperature control heat exchange system is more energy-saving, and when the target temperature is approached, the flow of the ultra-low-temperature liquid entering the cooling pipe is adjusted based on the cooperation of the electromagnetic valve and the circulating pump, and the temperature is further controlled. BRIEF DESCRIPTION OF DRAWINGS

[0027] Figure 1 It is a structural schematic diagram of an energy-saving ultra-low-temperature precise temperature control heat exchange system;

[0028] Figure 2 It is a structural schematic diagram of an energy-saving ultra-low-temperature precise temperature control heat exchange system from a second perspective;

[0029] Figure 3 It is a structural schematic diagram of a support assembly and a low-temperature stage refrigeration mechanism in an energy-saving ultra-low-temperature precise temperature control heat exchange system;

[0030] Figure 4It is a structure schematic view of high-temperature stage refrigeration mechanism and low-temperature stage refrigeration mechanism in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0031] Figure 5 It is a structure schematic view of high-temperature stage refrigeration mechanism in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0032] Figure 6 It is a structure schematic view of low-temperature stage refrigeration mechanism in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0033] Figure 7 It is a structure schematic view of mounting plate, fixing plate, condensing pipe and evaporating pipe in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0034] Figure 8 It is a structure schematic view of water cooling mechanism in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0035] Figure 9 It is a structure schematic view of support assembly in an energy-saving type super-low-temperature precision temperature control heat exchange system.

[0036] In the figure:

[0037] 1, support assembly; 101, support bottom plate; 102, isolation plate; 103, support frame; 104, support plate; 105, bearing plate; 106, test box; 107, mounting frame; 108, temperature sensor; 109, partition plate;

[0038] 2, high-temperature stage refrigeration mechanism; 201, second drying filter; 202, second throttling valve; 203, mounting plate; 204, evaporating pipe; 205, second condenser; 206, second communication pipe; 207, high-temperature compressor; 208, inlet pipe;

[0039] 3, low-temperature stage refrigeration mechanism; 301, condensing pipe; 302, fixing plate; 303, first throttling valve; 304, first drying filter; 305, first condenser; 306, first communication pipe; 307, low-temperature compressor;

[0040] 4, cooling mechanism; 401, liquid inlet pipe; 402, electromagnetic valve; 403, flow sensor; 404, conveying pipe; 405, circulating pump; 406, cooling pipe; 407, return pipe; 408, one-way valve; 409, connecting pipe;

[0041] 5, circulating mechanism; 501, gas-liquid separator; 502, linkage pipe; 503, circulating pipe. DETAILED DESCRIPTION

[0042] Clearly, the embodiments described are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0043] The present application provides an energy-saving ultralow-temperature precision temperature control heat exchange system, as shown in Figure 1 Figure 9 Three embodiments are provided.

[0044] Embodiment one:

[0045] The energy-saving ultralow-temperature precision temperature control heat exchange system comprises a support assembly 1, one side of the support assembly 1 is provided with a high-temperature level refrigeration mechanism 2, the surface of the high-temperature level refrigeration mechanism 2 is provided with a low-temperature level refrigeration mechanism 3, and the surface of the low-temperature level refrigeration mechanism 3 is provided with a cooling mechanism 4.

[0046] The support assembly 1 comprises a support bottom plate 101, the upper surface of the support bottom plate 101 is fixedly connected with an isolation plate 102 corresponding to the high-temperature level refrigeration mechanism 2 and the low-temperature level refrigeration mechanism 3, one side of the support bottom plate 101 is fixedly connected with a support frame 103, and the upper surface of the support frame 103 is fixedly connected with support plates 104 in a path array, which are respectively fixedly connected with a first drying filter 304 and a second drying filter 201.

[0047] The support bottom plate 101, the support frame 103 and the support plates 104 cooperate with each other to support the high-temperature level refrigeration mechanism 2 and the low-temperature level refrigeration mechanism 3, so that the energy-saving ultralow-temperature precision temperature control heat exchange system is more stable during use.

[0048] The isolation plate 102 is used to isolate the high-temperature level refrigeration mechanism 2 and the low-temperature level refrigeration mechanism 3.

[0049] The low-temperature level refrigeration mechanism 3 comprises a condenser pipe 301 installed on the surface of the high-temperature level refrigeration mechanism 2 in a path array, one side of a plurality of condenser pipes 301 is fixedly connected with a fixed plate 302 in communication with the condenser pipe 301, one side of the fixed plate 302 is fixedly connected with a first throttling valve 303 through a flange, one end of the first throttling valve 303 is fixedly connected with a first drying filter 304 in communication with the first throttling valve 303, one end of the first drying filter 304 is fixedly connected with a first condenser 305, one side of the first condenser 305 is fixedly connected with a first communication pipe 306 through a bolt, and one side of the first communication pipe 306 is fixedly connected with a low-temperature compressor 307.

[0050] ​The condenser pipe 301 is used for condensing the medium-temperature and low-pressure gas-liquid two-phase refrigerant into liquid;

[0051] The fixed plate 302 is used for supporting the condenser pipe 301 and the first throttling valve 303;

[0052] The first throttling valve 303 is used for discharging the high-temperature and high-pressure gas-liquid two-phase refrigerant;

[0053] The first drying filter 304 is used for cleaning the moisture and impurities in the high-temperature and high-pressure gas-liquid two-phase refrigerant;

[0054] The first condenser 305 is used for condensing the high-temperature and high-pressure refrigerant gas into gas-liquid two-phase refrigerant;

[0055] The first communication pipe 306 is used for conveying the high-temperature and high-pressure refrigerant gas;

[0056] The low-temperature compressor 307 is used for conveying the external refrigerant gas and forming the high-temperature and high-pressure refrigerant gas;

[0057] Specifically, the low-temperature compressor 307 sucks in the refrigerant gas and forms the high-temperature and high-pressure refrigerant gas, so that the high-temperature and high-pressure gas enters the first condenser 305 through the first communication pipe 306, so that the high-temperature and high-pressure gas forms the gas-liquid two-phase refrigerant, and the moisture and impurities in the gas-liquid two-phase refrigerant are discharged through the first drying filter 304, so that the gas-liquid two-phase refrigerant enters the first throttling valve 303, and the medium-temperature and low-pressure gas-liquid two-phase refrigerant is formed through the first throttling valve 303, and enters the condenser pipe 301 through the fixed plate 302, so that the gas discharges heat into the evaporator pipe 204, so that the gas in the condenser pipe 301 is condensed into liquid to obtain the ultra-low-temperature refrigerant;

[0058] The cooling mechanism 4 comprises a liquid inlet pipe 401 fixedly connected to the surface of the condenser pipe 301 and communicated with the condenser pipe 301, an electromagnetic valve 402 fixedly connected to the surface of the liquid inlet pipe 401, a flow sensor 403 fixedly connected to one end of the liquid inlet pipe 401, a conveying pipe 404 fixedly connected to one end of the flow sensor 403, and a circulating pump 405 with an input end communicated with the conveying pipe 404;

[0059] The liquid inlet pipe 401 is used for conveying the ultra-low-temperature refrigerant in the condenser pipe 301 to the cooling pipe 406;

[0060] The flow sensor 403 is used for monitoring the flow of the ultra-low-temperature refrigerant;

[0061] The conveying pipe 404 is used for conveying the carrier refrigerant and the ultra-low-temperature refrigerant into the cooling pipe 406 through the circulating pump 405.

[0062] The cooling mechanism 4 further comprises the cooling pipe 406 fixedly connected to and in communication with the output end of the circulating pump 405, one end of the cooling pipe 406 being fixedly connected with the return pipe 407, one end of the return pipe 407 being fixedly connected with the one-way valve 408, one end of the one-way valve 408 being fixedly connected with the connecting pipe 409 in communication with the conveying pipe 404.

[0063] The cooling pipe 406 is used for regulating the temperature in the test box 106.

[0064] The return pipe 407 is used for conveying the carrier refrigerant and the ultra-low-temperature refrigerant after heat absorption into the conveying pipe 404.

[0065] The one-way valve 408 is used for preventing the carrier refrigerant and the ultra-low-temperature refrigerant after heat absorption from flowing back into the return pipe 407.

[0066] The connecting pipe 409 is used for connecting the conveying pipe 404 and the return pipe 407.

[0067] Specifically, the carrier refrigerant is circulated between the conveying pipe 404, the circulating pump 405, the cooling pipe 406, the return pipe 407 and the connecting pipe 409 through the circulating pump 405, and the temperature in the test box 106 is controlled based on the temperature of the carrier refrigerant itself, so as to realize the effect of the cooling mechanism 4 bearing the basic refrigeration load.

[0068] When the new energy battery test temperature requirement is lower, the ultra-low-temperature refrigerant in the condensing pipe 301 enters the liquid inlet pipe 401 based on the setting of the electromagnetic valve 402, and enters the conveying pipe 404 through the flow sensor 403, so that the carrier refrigerant and the ultra-low-temperature refrigerant enter the cooling pipe 406 through the circulating pump 405, the temperature in the test box 106 is further adjusted, and the circulation between the return pipe 407 and the connecting pipe 409 is realized, so as to realize the temperature compensation of the low-temperature stage refrigeration mechanism 3 and the heat exchange of the cooling mechanism 4 and the low-temperature stage refrigeration mechanism 3.

[0069] The start-stop frequency of the low-temperature compressor 307 is reduced, so as to reduce the energy consumption of the compressor and the influence of multiple start-stops on the compressor, and the temperature in the new energy battery test process is monitored in real time through the setting of the temperature sensor 108, the low-temperature stage refrigeration mechanism 3 or the cooling mechanism 4 is automatically switched, the cooling mechanism 4 is preferentially used, and the low-temperature stage refrigeration mechanism 3 is used when necessary, so as to realize step-by-step energy saving, thereby further realizing the energy saving and precise temperature control of the temperature control heat exchange system.

[0070] The second embodiment is based on the first embodiment, and further, the high-temperature stage refrigeration mechanism 2 comprises a second drying filter 201 mounted on one side of the upper surface of the support assembly 1, one end of the second drying filter 201 is fixedly connected with a second throttling valve 202, one end of the second throttling valve 202 is fixedly connected with a mounting plate 203, one side of the mounting plate 203 is fixedly connected with an evaporation pipe 204 in an array of paths, the evaporation pipe 204 is in contact with the first condenser 305;

[0071] The second drying filter 201 is used to remove water and impurities in the gas-liquid two-phase refrigerant in the high-temperature stage refrigeration mechanism 2.

[0072] The evaporation pipe 204 is used to absorb heat of the medium-temperature and low-pressure gas-liquid two-phase refrigerant in the high-temperature stage refrigeration mechanism 2.

[0073] The high-temperature stage refrigeration mechanism 2 further comprises a second condenser 205 fixedly connected to the other end of the second drying filter 201, one end of the second condenser 205 is fixedly connected with a second communication pipe 206 through a bolt, one end of the second communication pipe 206 is fixedly connected with a high-temperature compressor 207, the input ends of the high-temperature compressor 207 and the low-temperature compressor 307 are fixedly connected with an air inlet pipe 208 through a bolt, and one end of the air inlet pipe 208 is mounted with a circulation mechanism 5.

[0074] The air inlet pipe 208 is used to discharge the refrigerant gas into the high-temperature compressor 207 and the low-temperature compressor 307.

[0075] Specifically, the high-temperature compressor 207 sucks the refrigerant gas through the air inlet pipe 208, forms high-temperature and high-pressure refrigerant gas, makes the high-temperature and high-pressure refrigerant gas enter the second condenser 205 through the second communication pipe 206, makes the high-temperature and high-pressure gas form gas-liquid two-phase refrigerant, discharges water and impurities in the gas-liquid two-phase refrigerant through the second drying filter 201, makes the gas-liquid two-phase refrigerant enter the second throttling valve 202, forms medium-temperature and low-pressure gas-liquid two-phase refrigerant through the second throttling valve 202, and makes the medium-temperature and low-pressure gas-liquid two-phase refrigerant enter the evaporation pipe 204 through the mounting plate 203, so that the gas absorbs heat in the condensing pipe 301 to be gasified into gas to obtain high-temperature gas.

[0076] The circulation mechanism 5 comprises a gas-liquid separator 501 fixedly connected to one end of the air inlet pipe 208, the input end of the gas-liquid separator 501 is fixedly connected with a linkage pipe 502, and two linkage pipes 502 are respectively provided with a circulation pipe 503 fixedly connected with the condensing pipe 301 and the evaporation pipe 204 on the surfaces thereof.

[0077] The circulation pipe 503 is fixedly connected with a collection tank on the opposite side of the linkage pipe 502, and the collection tank is used to collect the refrigerant gas.

[0078] The gas-liquid separator 501 is used to realize gas-liquid separation in the refrigerant gas;

[0079] The linkage pipe 502 is used to transport the refrigerant gas in the collection tank to the gas-liquid separator 501;

[0080] The circulation pipe 503 is used to collect the gas in the evaporation pipe 204 and the condensation pipe 301 to the collection tank, complete the circulation of the refrigerant gas, and make the high-temperature stage refrigeration mechanism 2 and the low-temperature stage refrigeration mechanism 3 form a closed loop.

[0081] In the third embodiment based on the first embodiment, the support assembly 1 further comprises a bearing plate 105 fixedly connected to the support frame 103 and the support bottom plate 101 on the opposite side in an array of paths, and two bearing plates 105 are respectively fixedly connected to the corresponding gas-liquid separators 501. One side of the isolation plate 102 is fixedly connected to a baffle fixedly connected to the circulation pump 405. The lower surfaces of the support bottom plate 101 and the support frame 103 are both provided with support seats.

[0082] The bearing plate 105 is used to support the gas-liquid separator 501;

[0083] The baffle is used to support the circulation pump 405;

[0084] The support seat is used to support the support bottom plate 101 and the support frame 103;

[0085] The support assembly 1 further comprises a test box 106 fixedly connected to the upper surface of the support bottom plate 101. The test box 106 is internally fixedly connected to a mounting frame 107 corresponding to the new energy battery. The upper surface of the test box 106 is fixedly connected to an array of paths of temperature sensors 108. The inside of the test box 106 is fixedly connected to a partition plate 109 corresponding to the cooling pipe 406.

[0086] The test box 106 is used to test the new energy battery;

[0087] The mounting frame 107 is used to mount the new energy battery;

[0088] The temperature sensor 108 is used to monitor the temperature inside the test box 106;

[0089] The partition plate 109 is used to isolate the cooling pipe 406 and the new energy battery, so as to avoid the direct contact between the new energy battery and the cooling pipe 406, and to reduce the temperature control accuracy of the new energy battery;

[0090] The cooling pipe 406 is fixedly connected to the inside of the test box 106, and the cooling pipe 406 corresponds to the partition plate 109; the return pipe 407 is fixedly connected to the test box 106; a plurality of condensing pipes 301 are connected in communication through pipes; a plurality of evaporating pipes 204 are connected in communication through pipes; and the gas in the condensing pipes 301 and the evaporating pipes 204 respectively enters the low-temperature compressor 307 and the high-temperature compressor 207 through the circulating pipe 503.

[0091] The cooling pipe 406 is installed in the test box 106 and is used for accurately regulating the temperature in the test box 106.

[0092] The above merely describes the preferred embodiments of the present application, but the protection scope of the present application is not limited to this. Any person skilled in the art can make equivalent replacements or changes according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, and all of them should be covered in the protection scope of the present application.

Claims

1. An energy-saving ultra-low temperature precision temperature control heat exchange system, characterized in that: It includes a support component (1), a high-temperature refrigeration mechanism (2) is installed on one side of the support component (1), a low-temperature refrigeration mechanism (3) is installed on the surface of the high-temperature refrigeration mechanism (2), and a cooling mechanism (4) is installed on the surface of the low-temperature refrigeration mechanism (3). The low-temperature refrigeration mechanism (3) includes condenser tubes (301) arranged in a path array on the surface of the high-temperature refrigeration mechanism (2). A fixed plate (302) communicating with the condenser tubes (301) is fixedly connected to one side of several condenser tubes (301). A first throttle valve (303) is fixedly connected to one side of the fixed plate (302) via a flange. A first dryer filter (304) communicating with the first throttle valve (303) is fixedly connected to one end of the first throttle valve (303). A first condenser (305) is fixedly connected to one end of the first dryer filter (304). A first connecting pipe (306) is fixedly connected to one side of the first condenser (305) via bolts. A low-temperature compressor (307) is fixedly connected to one side of the first connecting pipe (306). The high-temperature refrigeration mechanism (2) includes a second dryer filter (201) installed on one side of the upper surface of the support assembly (1). One end of the second dryer filter (201) is fixedly connected to a second throttle valve (202). One end of the second throttle valve (202) is fixedly connected to a mounting plate (203). One side of the mounting plate (203) is fixedly connected in a path array to an evaporator tube (204) that communicates with the second throttle valve (202) and the mounting plate (203). The evaporator tube (204) is in contact with the first condenser (305). The high-temperature refrigeration mechanism (2) further includes a second condenser (205) fixedly connected to the other end of the second dryer filter (201). One end of the second condenser (205) is fixedly connected to a second connecting pipe (206) by bolts. One end of the second connecting pipe (206) is fixedly connected to a high-temperature compressor (207). The input ends of the high-temperature compressor (207) and the low-temperature compressor (307) are both fixedly connected to an air inlet pipe (208) by bolts. One end of the air inlet pipe (208) is equipped with a circulation mechanism (5).

2. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 1, characterized in that: The circulation mechanism (5) includes a gas-liquid separator (501) fixedly connected to one end of the air inlet pipe (208). The input end of the gas-liquid separator (501) is fixedly connected to a linkage pipe (502). One end of each of the two linkage pipes (502) is provided with a circulation pipe (503) whose surface is fixedly connected to the condenser pipe (301) and the evaporator pipe (204).

3. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 2, characterized in that: The cooling mechanism (4) includes an inlet pipe (401) fixedly connected to the surface of the condenser pipe (301) and communicating with the condenser pipe (301). A solenoid valve (402) is fixedly connected to the surface of the inlet pipe (401). A flow sensor (403) is fixedly connected to one end of the inlet pipe (401). A delivery pipe (404) is fixedly connected to one end of the flow sensor (403). A circulation pump (405) whose input end is connected to the delivery pipe (404) is fixedly connected to one end of the delivery pipe (404).

4. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 3, characterized in that: The cooling mechanism (4) further includes a cooling pipe (406) fixedly connected to the output end of the circulating pump (405) and communicating with the output end of the circulating pump (405). One end of the cooling pipe (406) is fixedly connected to a return pipe (407), one end of the return pipe (407) is fixedly connected to a one-way valve (408), and one end of the one-way valve (408) is fixedly connected to a connecting pipe (409) communicating with the delivery pipe (404).

5. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 4, characterized in that: The support assembly (1) includes a support base plate (101). An isolation plate (102) corresponding to the high-temperature refrigeration mechanism (2) and the low-temperature refrigeration mechanism (3) is fixedly connected to the upper surface of the support base plate (101). A support frame (103) is fixedly connected to one side of the support base plate (101). The upper surface of the support frame (103) is fixedly connected to support plates (104) that are respectively fixedly connected to the first dryer filter (304) and the second dryer filter (201) in a path array.

6. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 5, characterized in that: The support assembly (1) also includes a bearing plate (105) arranged in a path array and fixedly connected to the opposite side of the support frame (103) and the support base plate (101). The two bearing plates (105) are fixedly connected to the corresponding gas-liquid separators (501). A baffle fixedly connected to the circulating pump (405) is fixedly connected to one side of the isolation plate (102). Support seats are installed on the lower surfaces of the support base plate (101) and the support frame (103).

7. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 4, characterized in that: The support assembly (1) also includes a test box (106) fixedly connected to the upper surface of the support base plate (101). The test box (106) is fixedly connected to an mounting bracket (107) corresponding to the new energy battery. Temperature sensors (108) are fixedly connected to the upper surface of the test box (106) in a path array. The test box (106) is fixedly connected to a partition plate (109) corresponding to the cooling pipe (406).

8. The energy-saving ultra-low temperature precision temperature control heat exchange system according to claim 7, characterized in that: The cooling pipe (406) is fixedly connected to the inside of the test chamber (106). The cooling pipe (406) corresponds to the partition plate (109). The return pipe (407) is fixedly connected to the test chamber (106). Several condenser pipes (301) are connected by pipes. Several evaporator pipes (204) are connected by pipes. The gas inside the condenser pipes (301) and the evaporator pipes (204) enters the low-temperature compressor (307) and the high-temperature compressor (207) respectively through the circulation pipe (503).

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