CN220959191U - Heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment - Google Patents
Heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment Download PDFInfo
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- CN220959191U CN220959191U CN202322568274.8U CN202322568274U CN220959191U CN 220959191 U CN220959191 U CN 220959191U CN 202322568274 U CN202322568274 U CN 202322568274U CN 220959191 U CN220959191 U CN 220959191U
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 47
- 238000001816 cooling Methods 0.000 title claims abstract description 44
- 238000012360 testing method Methods 0.000 title claims abstract description 17
- 230000002528 anti-freeze Effects 0.000 claims abstract description 35
- 238000012546 transfer Methods 0.000 claims abstract description 14
- 239000007788 liquid Substances 0.000 claims description 23
- 239000003507 refrigerant Substances 0.000 claims description 16
- 238000001704 evaporation Methods 0.000 claims description 10
- 238000005485 electric heating Methods 0.000 claims description 4
- 238000007710 freezing Methods 0.000 claims 2
- 238000000034 method Methods 0.000 description 11
- 230000007613 environmental effect Effects 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 2
- 238000009833 condensation Methods 0.000 description 2
- 230000005494 condensation Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- 238000002791 soaking Methods 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000004781 supercooling Methods 0.000 description 1
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Abstract
The utility model discloses a heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment, which comprises a main compressor in a main control temperature circulation loop, an a1 heat exchange channel in a first main heat exchanger, a b1 heat exchange channel in a second main heat exchanger, an electronic expansion valve and a direct cooling plate, wherein the main compressor is connected with the main compressor; an a2 heat exchange channel in heat transfer fit with the a1 heat exchange channel is arranged in the first main heat exchanger, and a b2 heat exchange channel in heat transfer fit with the b1 heat exchange channel is arranged in the second main heat exchanger; the antifreeze heating container, the a2 heat exchange channel in the first main heat exchanger, the b2 heat exchange channel in the second main heat exchanger and the first circulating pump form a heat exchange circulation loop; the influence of the ambient temperature on the main control temperature circulation loop is reduced.
Description
Technical Field
The utility model belongs to the field of temperature control testing of battery packs.
Background
For the direct cooling and direct heating type power battery pack test, the requirement of battery pack stability temperature is met, the principle is that a compressor is utilized to drive a refrigerant, the refrigerant is driven into a direct cooling plate of the battery pack, and the condensation pressure, the evaporation pressure, the superheat degree and the supercooling degree required by the power battery pack under various working conditions are simulated;
In the prior art, in a heat exchanger in a main control temperature circulation loop, a structure based on an air cooling heat exchange system is generally adopted, and the environment temperature (especially when the environment temperature is at a low temperature or a high temperature) has great influence on the adjusting range of the condensation or evaporation process based on air cooling, so that the testing process of the direct cooling and direct heating type power battery pack is interfered.
Disclosure of Invention
The utility model aims to: in order to overcome the defects in the prior art, the utility model provides a heat exchange system of direct cooling and direct heating type battery pack temperature control test equipment, which reduces the influence of the ambient temperature on a main control temperature circulation loop.
The technical scheme is as follows: in order to achieve the purpose, the heat exchange system of the direct cooling and direct heating type battery pack temperature control test equipment comprises a main compressor in a main control temperature circulation loop, an a1 heat exchange channel in a first main heat exchanger, a b1 heat exchange channel in a second main heat exchanger, an electronic expansion valve and a direct cooling plate;
An a2 heat exchange channel in heat transfer fit with the a1 heat exchange channel is arranged in the first main heat exchanger, and a b2 heat exchange channel in heat transfer fit with the b1 heat exchange channel is arranged in the second main heat exchanger; the antifreeze heating container, the a2 heat exchange channel in the first main heat exchanger, the b2 heat exchange channel in the second main heat exchanger and the first circulating pump form a heat exchange circulation loop.
Further, the direct cooling plate W2 is attached to the battery pack to be tested in a heat transfer manner.
Further, the auxiliary temperature control circulation loop is formed by an auxiliary system compressor, an auxiliary system condenser, an auxiliary system thermal expansion valve and an evaporation pipe in an auxiliary system evaporator; a c1 heat exchange channel matched with the heat transfer of the evaporating pipe is arranged in the auxiliary system evaporator; the system also comprises a second circulating pump, wherein the second circulating pump, a c1 heat exchange channel in the auxiliary system evaporator and the antifreeze heating container form a temperature-regulating circulating loop.
Further, the main control temperature circulation loop also comprises a four-way valve, wherein the four-way valve comprises an a-way valve, an A-way valve, a B-way valve and a B-way valve; the four-way valve comprises the following two states:
The refrigerant extruded from the main compressor sequentially flows through the A-way of the four-way valve, the a1 heat exchange channel in the first main heat exchanger, the B1 heat exchange channel in the second main heat exchanger, the electronic expansion valve, the direct cooling plate, the B-way of the four-way valve and the B-way of the four-way valve, and finally returns to the leading-in end of the main compressor;
And in the second state, the passage a is communicated with the passage B, the passage A is communicated with the passage B, and the refrigerant pressed out of the main compressor sequentially flows through the passage A of the four-way valve, the passage B of the four-way valve, the direct cooling plate, the electronic expansion valve, the heat exchange passage B1 in the second main heat exchanger, the heat exchange passage a1 in the first main heat exchanger, the passage a of the four-way valve and the passage B of the four-way valve, and finally returns to the leading-in end of the main compressor.
Further, the leading-out end of the main compressor is communicated with the A-way of the four-way valve through a first electromagnetic valve.
Further, an electric heating device is arranged in the antifreeze heating container.
The beneficial effects are that: according to the utility model, the antifreeze liquid in the antifreeze liquid heating container is refrigerated by the compressor C2, is heated by electric heating, and the variable frequency circulating pump P10 drives the liquid to circularly flow, so that the temperature control of the antifreeze liquid in the antifreeze liquid heating container is realized, and the antifreeze liquid is not influenced by the environmental temperature; the antifreeze liquid in the antifreeze liquid heating container is used as heat exchange medium of the first main heat exchanger and the second main heat exchanger, so that the heat dissipation and the heat absorption of the first main heat exchanger and the second main heat exchanger are not obviously affected by the ambient temperature; thereby simulating the working conditions of the vehicle-mounted thermal management system for the power battery under different environmental temperatures; the influence of the environmental temperature on the test is effectively solved, and the test precision and stability are improved. The vehicle-mounted thermal management system can simulate working conditions of the power battery under different environmental temperatures at any time.
Drawings
Fig. 1 is an overall schematic diagram of the present solution.
Detailed Description
The utility model will be further described with reference to the accompanying drawings.
The heat exchange system of the direct cooling and direct heating type battery pack temperature control test equipment shown in the attached figure 1 comprises a main compressor C1 in a main control temperature circulation loop, an a1 heat exchange channel in a first main heat exchanger W10, a b1 heat exchange channel in a second main heat exchanger W11, an electronic expansion valve X15 and a direct cooling plate W2; the direct cooling plate W2 is attached to the battery pack to be tested in a heat transfer manner, and the direct cooling plate W2 absorbs or emits heat according to different working conditions of the battery pack to be tested, so that the direct cooling and direct heating processes under the actual working conditions are simulated.
The main control temperature circulation loop also comprises a four-way valve X6, wherein the four-way valve X6 comprises an a-way, an A-way, a B-way and a B-way;
The four-way valve X6 includes two states:
In the first state, the passage a is communicated with the passage A, the passage B is communicated with the passage B, and in the first state, the refrigerant extruded from the leading-out end of the main compressor C1 flows through the passage A of the four-way valve X6, the passage a of the four-way valve X6, the heat exchange passage a1 in the first main heat exchanger W10, the heat exchange passage B1 in the second main heat exchanger W11, the electronic expansion valve X15, the direct cooling plate W2, the passage B of the four-way valve X6 and the passage B of the four-way valve X6 in sequence, and finally returns to the leading-in end of the main compressor C1;
In the second state, the refrigerant extruded from the leading-out end of the main compressor C1 flows through the port a of the four-way valve X6, the port B of the four-way valve X6, the direct cooling plate W2, the electronic expansion valve X15, the B1 heat exchange channel in the second main heat exchanger W11, the a1 heat exchange channel in the first main heat exchanger W10, the port a of the four-way valve X6, and the port B of the four-way valve X6 in order, and finally returns to the leading-in end of the main compressor C1.
The leading-out end of the main compressor C1 is communicated with the A-way of the four-way valve X6 through a first electromagnetic valve X14.
A drying filter F1 and a main liquid storage tank W4 are connected between an a1 heat exchange channel in the first main heat exchanger W10 and a b1 heat exchange channel in the second main heat exchanger W11; a gas-liquid separator W5, a mass flowmeter F01 and a temperature sensor are arranged between the leading-in end of the main compressor C1 and the b-way of the four-way valve X6; a third electromagnetic valve X16, a temperature sensor and a pressure sensor are connected in series between the B-way of the four-way valve X6 and the direct-cooling plate W2; a temperature sensor and a pressure sensor are connected between the electronic expansion valve X15 and the direct cooling plate W2.
The first main heat exchanger W10 is internally provided with an a2 heat exchange channel in heat transfer fit with the a1 heat exchange channel, and the second main heat exchanger W11 is internally provided with a b2 heat exchange channel in heat transfer fit with the b1 heat exchange channel.
The antifreeze heating container E1, the electric heating device in the antifreeze heating container E1, the a2 heat exchange channel in the first main heat exchanger W10, the b2 heat exchange channel in the second main heat exchanger W11 and the first circulating pump P10 form a heat exchange circulation loop; under the drive of the first circulating pump P10, the antifreeze in the antifreeze heating container E1 flows through the a2 heat exchange channel in the first main heat exchanger W10, the b2 heat exchange channel in the second main heat exchanger W11, and the first circulating pump P10 finally flows back to the antifreeze heating container E1.
The auxiliary temperature control circulation loop is composed of an auxiliary system compressor C2, an auxiliary system condenser W7, an auxiliary system thermal expansion valve X17 and an evaporation pipe in an auxiliary system evaporator W6.
A c1 heat exchange channel matched with the heat transfer of the evaporating pipe is arranged in the auxiliary system evaporator W6; the system also comprises a second circulating pump P8, wherein the second circulating pump P8, a c1 heat exchange channel in the auxiliary system evaporator W6 and an antifreezing solution heating container E1 form a temperature regulating circulating loop; under the drive of the second circulating pump P8, the antifreeze in the antifreeze heating container E1 flows through the second circulating pump P8 and the c1 heat exchange channel in the auxiliary system evaporator W6 in sequence, and finally flows back to the antifreeze heating container E1.
An auxiliary liquid storage tank W8 is connected in series between the auxiliary system condenser W7 and the auxiliary system thermal expansion valve X17.
All compressors of the scheme are variable-frequency compressors;
operation and principle of "direct cooling simulation process":
The four-way valve X6 enters a first state, and the a-way is communicated with the A-way while the B-way is communicated with the B-way; the variable-frequency main compressor C1 operates at a preset power according to the heating value of the direct-cooling plate W2, and the refrigerant extruded from the leading-out end of the main compressor C1 sequentially flows through an A-way of the four-way valve X6, an a1 heat exchange channel in the first main heat exchanger W10, a B1 heat exchange channel in the second main heat exchanger W11, an electronic expansion valve X15, the direct-cooling plate W2, a B-way of the four-way valve X6 and a B-way of the four-way valve X6, and finally returns to the leading-in end of the main compressor C1; in the above process, the gas refrigerant releases heat and converts into liquid state in the process of flowing through the a1 heat exchange channel in the first main heat exchanger W10 and the b1 heat exchange channel in the second main heat exchanger W11, then the liquid refrigerant enters the direct cooling plate W2 through the electronic expansion valve X15 to evaporate and gasify and continuously absorb the heat of the direct cooling plate W2, and then the gasified and endothermic refrigerant returns to the variable frequency main compressor C1;
Meanwhile, the second circulating pump P8 is started to enable the temperature-regulating circulating loop to continuously circulate, and liquid in the antifreeze heating container E1 continuously flows into the temperature-regulating circulating loop and then returns to the antifreeze heating container E1 again under the driving of the second circulating pump P8, so that a soaking and stirring effect is achieved, and the temperature of the antifreeze in the antifreeze heating container E1 is uniform; meanwhile, the first circulating pump P10 continuously runs to form a heat exchange circulating loop, so that the antifreeze liquid in the antifreeze liquid heating container E1 continuously flows through the a2 heat exchange channel in the first main heat exchanger W10 and the b2 heat exchange channel in the second main heat exchanger W11, and further continuously absorbs heat released by the a1 heat exchange channel in the first main heat exchanger W10 and the b1 heat exchange channel in the second main heat exchanger W11; the heat absorbed by the heat exchange circulation loop can continuously raise the overall temperature of the liquid in the antifreeze heating container E1; at the moment, the auxiliary system compressor C2 is controlled to operate, an evaporating pipe in the auxiliary system evaporator W6 continuously absorbs heat of liquid flowing through a C1 heat exchange channel in the auxiliary system evaporator W6, so that heat of a temperature regulating circulation loop is continuously released to the evaporating pipe in the auxiliary system evaporator W6, the heat releasing process of the temperature regulating circulation loop and the heat absorbing process of the heat exchange circulation loop are opposite to each other, the temperature in an antifreezing solution heating container E1 is kept unchanged, the temperature fluctuation of a main control temperature circulation loop is further reduced, and the reliability and stability of a temperature control system experiment are improved;
Operation of the "direct thermal simulation procedure":
The four-way valve X6 enters a second state, and the A-way and the B-way are communicated at the same time when the A-way and the B-way are communicated; the variable-frequency main compressor C1 operates at a preset power according to the direct cooling plate W2, and the refrigerant extruded from the outlet end of the main compressor C1 sequentially flows through the A-way of the four-way valve X6, the B-way of the four-way valve X6, the direct cooling plate W2, the electronic expansion valve X15, the B1 heat exchange channel in the second main heat exchanger W11, the a1 heat exchange channel in the first main heat exchanger W10, the a-way of the four-way valve X6 and the B-way of the four-way valve X6, and finally returns to the inlet end of the main compressor C1; in the above process, the gas refrigerant with higher temperature enters the low-temperature direct cooling plate W2 to liquefy and continuously release heat to the direct cooling plate W2, so that the direct cooling plate W2 is heated, and then the liquefied refrigerant is evaporated and gasified through the b1 heat exchange channel in the second main heat exchanger W11 and the a1 heat exchange channel in the first main heat exchanger W10 in sequence after passing through the electronic expansion valve X15 and continuously absorbs heat, and then the gasified and heat-absorbed refrigerant returns to the variable frequency main compressor C1;
Meanwhile, the second circulating pump P8 is started to enable the temperature-regulating circulating loop to continuously circulate, and liquid in the antifreeze heating container E1 continuously flows into the temperature-regulating circulating loop and then returns to the antifreeze heating container E1 again under the driving of the second circulating pump P8, so that a soaking and stirring effect is achieved, and the temperature of the antifreeze in the antifreeze heating container E1 is uniform; meanwhile, the first circulating pump P10 continuously runs to form a heat exchange circulating loop, so that the antifreeze liquid in the antifreeze liquid heating container E1 continuously flows through the a2 heat exchange channel in the first main heat exchanger W10 and the b2 heat exchange channel in the second main heat exchanger W11, and further heat is continuously released to the a1 heat exchange channel in the first main heat exchanger W10 and the b1 heat exchange channel in the second main heat exchanger W11; in the process that the heat exchange circulation loop continuously releases heat to the a1 heat exchange channel in the first main heat exchanger W10 and the b1 heat exchange channel in the second main heat exchanger W11, the overall temperature of liquid in the antifreeze heating container E1 is continuously reduced; at the moment, the heating device in the heating container E1 is controlled to run, so that the heating device is mutually opposite to the heat release process of the heat exchange circulation loop, the temperature fluctuation of the main control temperature circulation loop is further reduced, and the reliability and the stability of a temperature control system experiment are improved.
The foregoing is only a preferred embodiment of the utility model, it being noted that: it will be apparent to those skilled in the art that various modifications and adaptations can be made without departing from the principles of the present utility model, and such modifications and adaptations are intended to be comprehended within the scope of the utility model.
Claims (6)
1. Heat exchange system of direct cooling and direct heating type battery pack temperature control test equipment, which is characterized in that: the device comprises a main compressor (C1) in a main control temperature circulation loop, an a1 heat exchange channel in a first main heat exchanger (W10), a b1 heat exchange channel in a second main heat exchanger (W11), an electronic expansion valve (X15) and a direct cooling plate (W2);
An a2 heat exchange channel in heat transfer fit with the a1 heat exchange channel is arranged in the first main heat exchanger (W10), and a b2 heat exchange channel in heat transfer fit with the b1 heat exchange channel is arranged in the second main heat exchanger (W11); the antifreeze heating container (E1), an a2 heat exchange channel in the first main heat exchanger (W10), a b2 heat exchange channel in the second main heat exchanger (W11) and the first circulating pump (P10) form a heat exchange circulation loop.
2. The heat exchange system of the direct cooling and direct heating type battery pack temperature control test device according to claim 1, wherein: the direct cooling plate (W2) is attached to the battery pack to be tested in a heat transfer manner.
3. The heat exchange system of the direct cooling and direct heating type battery pack temperature control test device according to claim 2, wherein: the system also comprises an auxiliary system compressor (C2), an auxiliary system condenser (W7), an auxiliary system thermal expansion valve (X17) and an auxiliary temperature control circulation loop formed by evaporating pipes in an auxiliary system evaporator (W6); a c1 heat exchange channel matched with the heat transfer of the evaporating pipe is arranged in the auxiliary system evaporator (W6); the anti-freezing device further comprises a second circulating pump (P8), wherein the second circulating pump (P8), a c1 heat exchange channel in the auxiliary system evaporator (W6) and the anti-freezing liquid heating container (E1) form a temperature-regulating circulating loop.
4. The heat exchange system of the direct cooling and direct heating type battery pack temperature control test device according to claim 1, wherein: the main control temperature circulation loop also comprises a four-way valve (X6), wherein the four-way valve (X6) comprises an a-way, an A-way, a B-way and a B-way; the four-way valve (X6) includes two states:
The refrigerant extruded from the main compressor (C1) flows through the A-way of the four-way valve (X6), the a1 heat exchange channel in the first main heat exchanger (W10), the B1 heat exchange channel in the second main heat exchanger (W11), the electronic expansion valve (X15), the direct cooling plate (W2), the B-way of the four-way valve (X6) and the B-way of the four-way valve (X6) in sequence, and finally returns to the leading-in end of the main compressor (C1);
And in the second state, the passage a is communicated with the passage B, and the refrigerant pressed out from the main compressor (C1) sequentially flows through the passage a of the four-way valve (X6), the passage B of the four-way valve (X6), the direct cooling plate (W2), the electronic expansion valve (X15), the heat exchange passage B1 in the second main heat exchanger (W11), the heat exchange passage a1 in the first main heat exchanger (W10), the passage a of the four-way valve (X6) and the passage B of the four-way valve (X6) and finally returns to the leading-in end of the main compressor (C1).
5. The heat exchange system of the direct cooling and direct heating type battery pack temperature control test device according to claim 4, wherein: the leading-out end of the main compressor (C1) is communicated with an A-way of the four-way valve (X6) through a first electromagnetic valve (X14).
6. The heat exchange system of the direct cooling and direct heating type battery pack temperature control test device according to claim 5, wherein: an electric heating device is arranged in the antifreeze heating container (E1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322568274.8U CN220959191U (en) | 2023-09-21 | 2023-09-21 | Heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202322568274.8U CN220959191U (en) | 2023-09-21 | 2023-09-21 | Heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment |
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| Publication Number | Publication Date |
|---|---|
| CN220959191U true CN220959191U (en) | 2024-05-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202322568274.8U Active CN220959191U (en) | 2023-09-21 | 2023-09-21 | Heat exchange system of direct-cooling and direct-heating battery pack temperature control test equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220959191U (en) |
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2023
- 2023-09-21 CN CN202322568274.8U patent/CN220959191U/en active Active
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