CN218677306U - Automobile battery thermal management system - Google Patents
Automobile battery thermal management system Download PDFInfo
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- CN218677306U CN218677306U CN202222589589.6U CN202222589589U CN218677306U CN 218677306 U CN218677306 U CN 218677306U CN 202222589589 U CN202222589589 U CN 202222589589U CN 218677306 U CN218677306 U CN 218677306U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The utility model discloses an automobile battery thermal management system, which comprises a refrigerant circulation loop, wherein a water-cooled condenser, a water-cooled evaporator and a compressor are connected in series on the refrigerant circulation loop; a first branch is connected between first valve ports of the first multi-way water valve and the second multi-way water valve, a second branch is connected between second valve ports of the first multi-way water valve and the second multi-way water valve, a radiator is arranged on the second branch, a third branch is connected between third valve ports of the first multi-way water valve and the second multi-way water valve, and a battery is arranged on the third branch; and a fourth branch is connected between the first valve ports of the third multi-way water valve and the fourth multi-way water valve, the second valve ports of the third multi-way water valve and the fourth multi-way water valve are communicated with the second branch, and the third valve ports of the third multi-way water valve and the fourth multi-way water valve are communicated with the third branch. The utility model discloses can solve current car battery thermal management system and use the various technical problem who brings as evaporimeter and condenser simultaneously with a heat exchanger.
Description
Technical Field
The utility model relates to a car thermal management system field specifically is a car battery thermal management system.
Background
Along with the rapid development of new energy vehicles, a plurality of pure electric vehicles or extended-range plug-in vehicles can be applied to energy storage batteries, the batteries need to be heated in the use process of the vehicle energy storage batteries, if the batteries need to be subjected to waste heat in winter, the batteries also need to be refrigerated, and if the batteries are used for a long time in high-temperature weather, a heat management system needs to be matched with the energy storage batteries, and the heat management system needs to have the functions of refrigeration cycle and heating cycle at the same time.
For example, the invention patent with publication number CN 113540609A, named as energy storage battery thermal management system, shows a simplest application of refrigeration cycle, and realizes the conversion between refrigeration and heating by adding a four-way reversing valve on the refrigerant side in the principle of vapor compression refrigeration cycle, which is widely used in the heat pump thermal management system of an automobile, but there are some improvement items in heating operation, in the heat pump thermal management of an automobile, the principle is often improved by some technical means to solve the problem of low COP (energy efficiency ratio) in winter heating in practical application, in addition, in the technical scheme, a heat exchanger is used as an evaporator and as a condenser, and the practical situation is that the heat release amount of the condenser = the heat absorption amount of the evaporator + the compressor does work, so the heat exchange amounts of the condenser and the evaporator in the refrigeration cycle are different, if the two heat exchangers are forcibly made into one, the energy efficiency of the system is reduced, the energy consumption of the system is increased, and meanwhile, the design of the two internal structures is the same, specifically, the inlet of the condenser is also not a gaseous state, but the outlet is a gaseous state, and the energy consumption of the condenser is not reduced, and the internal structure is not a gaseous state, thus the internal heat exchanger is not reduced. A new battery thermal management system is needed to solve the above technical problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a car battery thermal management system can solve current car battery thermal management system and use the various technical problem who brings as evaporimeter and condenser simultaneously with a heat exchanger.
In order to achieve the above object, the utility model provides a following technical scheme: a car battery thermal management system comprises a refrigerant circulation loop, wherein a water-cooled condenser, a water-cooled evaporator and a compressor are connected in series on the refrigerant circulation loop; the water cooling system comprises a first multi-way water valve and a second multi-way water valve, wherein a first branch is connected between first valve ports of the first multi-way water valve and the second multi-way water valve, the first branch penetrates through a water-cooled condenser, a second branch is connected between second valve ports of the first multi-way water valve and the second multi-way water valve, a radiator is arranged on the second branch, a third branch is connected between third valve ports of the first multi-way water valve and the second multi-way water valve, and a battery is arranged on the third branch; a fourth branch is connected between first valve ports of the third multi-way water valve and the fourth multi-way water valve, the fourth branch penetrates through the water-cooled evaporator, second valve ports of the third multi-way water valve and the fourth multi-way water valve are communicated with the second branch, and third valve ports of the third multi-way water valve and the fourth multi-way water valve are communicated with the third branch; the cooling liquid circulating in the first branch and the fourth branch exchanges heat with the refrigerant circulating in the refrigerant circulating loop through the water-cooled condenser and the water-cooled evaporator respectively, the water-cooled condenser and the water-cooled evaporator exchange heat with the two cooling liquid loops respectively, flexible switching among pipelines can be achieved through the four multi-way water valves, efficient cooling circulation, inefficient cooling circulation and warming circulation of the battery are achieved, and the energy efficiency ratio of the heat management system is improved.
Preferably, the second branch and the third branch are both provided with cooling liquid storage parts, so that cooling liquid can be independently supplemented to the second branch and the third branch, and continuous circulation can be ensured.
Preferably, an electronic expansion valve is installed on the refrigerant circulation circuit between the water-cooled condenser and the water-cooled evaporator, and the flow rate of the refrigerant in the refrigerant circulation circuit is controlled by adjusting the opening degree of the electronic expansion valve.
Preferably, a gas-liquid separator is installed in the refrigerant circulation circuit between the water-cooled evaporator and the compressor for separating the gas refrigerant in the refrigerant circulation circuit from the compressed oil in the compressor.
Preferably, the first branch and the fourth branch are both provided with water pumps which can provide power for the circulation of the cooling liquid in the first branch and the fourth branch.
Preferably, a heating device is installed on a pipeline of the third branch and the third multi-way water valve or the fourth multi-way water valve, and the pipeline is used for heating the cooling liquid in the third branch.
Preferably, the first multi-way water valve, the second multi-way water valve, the third multi-way water valve and the fourth multi-way water valve are all three-way water valves, three valve ports of the three-way water valves are communicated, and the three valve ports can be independently controlled to be opened and closed.
Preferably, the radiator is an air-cooled radiator, and heat of the cooling liquid entering the radiator can be quickly exhausted to the air.
Preferably, a water temperature sensor for detecting the temperature of the coolant entering or exiting the battery is disposed on the third branch, and the temperature of the coolant before entering the battery and the temperature of the coolant after exchanging heat with the battery can be monitored to adjust the control of the temperature of the coolant.
Compared with the prior art, the beneficial effects of the utility model are that:
the battery heat management system is provided with independent refrigerant circulation loops, a water-cooled condenser and a water-cooled evaporator which can work independently are arranged on the refrigerant circulation loops, two cooling liquid loops are arranged, the two cooling liquid loops are connected in parallel, the two cooling liquid loops can be flexibly switched through four multi-way water valves, efficient cooling circulation, inefficient cooling circulation and warming circulation of the battery are achieved, and the energy efficiency ratio of the heat management system is improved.
Drawings
FIG. 1 is a schematic diagram of the system of the present invention;
FIG. 2 is a schematic diagram of the efficient cooling cycle of the battery of the present invention;
FIG. 3 is a schematic diagram of a battery temperature cycle of the present invention;
fig. 4 is the low-efficiency cooling cycle of the battery of the present invention.
Reference numerals:
1. the system comprises a refrigerant circulating loop, 11, a water-cooled condenser, 12, a water-cooled evaporator, 13, a compressor, 14, a gas-liquid separator, 15, an electronic expansion valve, 16, a water pump, 17, a heating device, 2, a first multi-way water valve, 3, a second multi-way water valve, 4, a third multi-way water valve, 5, a fourth multi-way water valve, 6, a radiator, 7, a cooling liquid storage part, 8, a battery, 9, a water temperature sensor, a1, a first branch, a2, a second branch, a3, a third branch, a4 and a fourth branch.
Detailed Description
The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
As shown in fig. 1-4, the utility model discloses a solve current car battery thermal management system and use various technical problem that bring as evaporimeter and condenser simultaneously with a heat exchanger, provide following technical scheme: the automobile battery thermal management system comprises a refrigerant circulation loop 1, wherein a water-cooled condenser 11, a water-cooled evaporator 12 and a compressor 13 are connected in series on the refrigerant circulation loop 1; the water cooling device comprises a first multi-way water valve 2 and a second multi-way water valve 3, wherein a first branch a1 is connected between first valve ports of the first multi-way water valve 2 and the second multi-way water valve 3, the first branch a1 penetrates through a water-cooled condenser 11, a second branch a2 is connected between second valve ports of the first multi-way water valve 2 and the second multi-way water valve 3, a radiator 6 is arranged on the second branch a2, a third branch a3 is connected between third valve ports of the first multi-way water valve 2 and the second multi-way water valve 3, and a battery 8 is arranged on the third branch a 3; a fourth branch a4 is connected between first valve ports of the third multi-way water valve 4 and the fourth multi-way water valve 5, the fourth branch a4 penetrates through the water-cooled evaporator 12, second valve ports of the third multi-way water valve 4 and the fourth multi-way water valve 5 are communicated with a second branch a2, and third valve ports of the third multi-way water valve 4 and the fourth multi-way water valve 5 are communicated with a third branch a 3; the cooling liquid circulating in the first branch a1 and the fourth branch a4 exchanges heat with the refrigerant circulating in the refrigerant circulation loop 1 through the water-cooled condenser 11 and the water-cooled evaporator 12 respectively, the water-cooled condenser 11 and the water-cooled evaporator 12 exchange heat with the two cooling liquid loops respectively, flexible switching among pipelines can be achieved through the four multi-way water valves, efficient cooling circulation, inefficient cooling circulation and warming circulation of the battery are achieved, and the energy efficiency ratio of the heat management system is improved.
Specifically, the compressor 13 is responsible for compressing the refrigerant to provide power for the refrigeration system; the water-cooled condenser 11 is a junction of a refrigeration cycle system and a corresponding cooling liquid cycle system, and is responsible for heat exchange between a refrigerant and cooling liquid, and heat exchange performed in the condenser is as follows: the condensation of the gaseous refrigerant into the liquid refrigerant releases heat, heating the coolant, causing the coolant to increase in temperature.
The water-cooled evaporator 12 is also disposed at the junction of the refrigeration cycle system and the corresponding cooling liquid cycle system, and is responsible for heat exchange between the refrigerant and the cooling liquid, and heat exchange performed in the evaporator is: the refrigerant evaporates and absorbs heat of the coolant, and the coolant is cooled.
The first branch a1 and the fourth branch a4 can be respectively provided with a water pump 16, power can be provided for circulation of cooling liquid in the first branch a1 and the fourth branch a4, and power for circulation of the cooling liquid can be independently provided in cooling circulation and heating circulation.
The first multi-way water valve 2, the second multi-way water valve 3, the third multi-way water valve 4 and the fourth multi-way water valve 5 are all three-way water valves, three valve ports of the three-way water valves are communicated, and the three valve ports can be independently controlled to be opened and closed.
In this embodiment, as shown in fig. 1, the second branch a2 and the third branch a3 are both provided with a coolant storage component 7, so that the second branch a2 and the third branch a3 can be independently supplemented with coolant, and continuous circulation is ensured. The radiator 6 is an air-cooled radiator, and can quickly discharge the heat of the cooling liquid entering the radiator 6 into the air.
Meanwhile, an electronic expansion valve 15 is installed between the water-cooled condenser 11 and the water-cooled evaporator 12 on the refrigerant circulation circuit 1, the flow rate of the refrigerant in the refrigerant circulation circuit 1 is controlled by adjusting the opening degree of the electronic expansion valve 15, and the electronic expansion valve 15 can also reduce the pressure of the high-pressure refrigerant into a low-pressure gas-liquid mixed refrigerant. A gas-liquid separator 14 is further installed between the water-cooled evaporator 12 and the compressor 13 in the refrigerant circulation circuit 1, and is used for separating the gas refrigerant in the refrigerant circulation circuit 1 from the compressed oil of the compressor and returning the gas refrigerant to the compressor 13.
Meanwhile, as shown in fig. 1, a heating device 17 is installed on a pipeline communicating the third branch a3 with the third multiway water valve 4 or the fourth multiway water valve 5, and is used for heating the coolant in the third branch a3, and if the heat generated by the heat pump is insufficient for heating the battery in the temperature rise cycle, the system starts the heating device 17 to heat the coolant, and the heating device 17 may be a PTC heater.
The third branch a3 on be provided with the temperature sensor 9 that is used for detecting the coolant temperature of business turn over battery 8, can monitor the coolant temperature before entering into battery 8 and the temperature of the coolant after carrying out the heat transfer with battery 8 to the control of adjustment to coolant temperature.
Example 1: high-efficiency cooling cycle for battery
As shown in fig. 2 (in the figure, the dotted line indicates a non-flow line, the solid line indicates a flow line), the third valve port of the first multi-way water valve 2 or the second multi-way water valve 3 is closed, the first valve port and the second valve port are opened, the first valve ports of the third multi-way water valve 4 and the fourth multi-way water valve 5 are closed, the second valve port and the third valve port are opened, the compressor 13 in the refrigerant circulation circuit 1 compresses the gaseous refrigerant into a high-temperature high-pressure gaseous state, the gaseous refrigerant enters the water condenser 11 through circulation, the high-temperature high-pressure gaseous refrigerant exchanges heat with the cooling liquid in the first branch a1, the gaseous refrigerant is changed into a medium-temperature high-pressure liquid refrigerant, and the cooling liquid is heated, the cooling liquid heated in the first branch a1 passes through the first multi-way water valve 2 or the second multi-way water valve 3 and then flows through the radiator 6 to be cooled, the refrigerant passing through the water-cooled condenser 11 is throttled and depressurized through the expansion valve 15 to form a low-temperature and low-pressure gas-liquid mixture, then the low-temperature and low-pressure gas-liquid mixture enters the cooling liquid in the water-cooled evaporator 12 and the fourth branch a4 to carry out heat, the refrigerant is gasified to absorb the heat of the cooling liquid, the cooling liquid is cooled and exchanged to be vaporized to form a gaseous refrigerant, the cooled cooling liquid enters the battery 8 to take away the heat of the battery 8, and the gaseous refrigerant passing through the water-cooled evaporator 12 returns to the compressor through the gas-liquid separator 3 to form circulation.
Example 2: battery temperature cycle
As shown in fig. 3 (in the figure, the dotted line indicates a non-flow pipeline, the solid line indicates a flow pipeline), the first valve port of the first multi-way water valve 2 or the second multi-way water valve 3 is closed, the second valve port and the third valve port are opened, the third valve port of the third multi-way water valve 4 and the third valve port of the fourth multi-way water valve 5 are closed, the first valve port and the second valve port are opened, the compressor 13 in the refrigerant circulation loop 1 compresses the gaseous refrigerant into a high-temperature high-pressure gaseous state, the gaseous refrigerant enters the water-cooled condenser 11 through circulation, the high-temperature high-pressure gaseous refrigerant exchanges heat with the cooling liquid in the first branch a1 to be changed into a medium-temperature high-pressure liquid refrigerant, the cooling liquid is heated, and the heated cooling liquid flows to the third branch a3 to heat the battery 8. If the heat generated by the heat pump is not sufficient for battery heating, the system will activate the heating means 17 for heating the coolant. The refrigerant passing through the water-cooled condenser 11 is throttled and depressurized by an expansion valve 15 to form a low-temperature and low-pressure gas-liquid mixture, the cooling liquid in the water-cooled evaporator 12 and the fourth branch a4 is heated to form a gaseous refrigerant, and the gaseous refrigerant passing through the water-cooled evaporator 12 returns to the compressor through the gas-liquid separator 3 to form a cycle.
Example 3: low efficiency cooling cycle for batteries
As shown in fig. 4 (in the figure, the dotted line indicates a non-flow line, and the solid line indicates a flow line), the first, second, and third ports of the first and second multiway water valves 2 and 3 are all closed, the second ports of the third and fourth multiway water valves 4 and 5 are closed, and the first and third ports are opened. The second branch a2 and the third branch a3 are communicated with each other through a third multi-way water valve 4 and a fourth multi-way water valve 5 to form a circulation loop, cooling liquid flows between the second branch a2 and the third branch a3, the cooling liquid which flows in a circulation mode can be cooled through a radiator 6, and the working mode can be adopted under the condition that the requirement on the heat dissipation capacity of the battery is not high.
It should be noted that all directional indicators (such as up, down, left, right, front, and back) in the embodiments of the present invention are only used for explaining the relative position relationship between the components in a specific posture (as shown in the drawings), the motion condition, and the like, and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless expressly specified otherwise.
In the present application, unless expressly stated or limited otherwise, the terms "connected" and "fixed" are to be construed broadly, e.g., "fixed" may be fixedly connected or detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
In addition, the technical solutions between the embodiments of the present invention can be combined with each other, but it is necessary to be able to be realized by a person having ordinary skill in the art as a basis, and when the technical solutions are contradictory or cannot be realized, the combination of such technical solutions should be considered to be absent, and is not within the protection scope of the present invention.
Claims (9)
1. An automotive battery thermal management system, comprising:
the refrigeration system comprises a refrigerant circulating loop (1), wherein a water-cooled condenser (11), a water-cooled evaporator (12) and a compressor (13) are connected in series on the refrigerant circulating loop (1);
the water cooling device comprises a first multi-way water valve (2) and a second multi-way water valve (3), wherein a first branch (a 1) is connected between first valve ports of the first multi-way water valve (2) and the second multi-way water valve (3), the first branch (a 1) penetrates through a water-cooled condenser (11), a second branch (a 2) is connected between second valve ports of the first multi-way water valve (2) and the second multi-way water valve (3), a radiator (6) is arranged on the second branch (a 2), a third branch (a 3) is connected between third valve ports of the first multi-way water valve (2) and the second multi-way water valve (3), and a battery (8) is arranged on the third branch (a 3);
the water cooling device comprises a third multi-way water valve (4) and a fourth multi-way water valve (5), wherein a fourth branch (a 4) is connected between first valve ports of the third multi-way water valve (4) and the fourth multi-way water valve (5), the fourth branch (a 4) penetrates through a water cooling evaporator (12), second valve ports of the third multi-way water valve (4) and the fourth multi-way water valve (5) are communicated with a second branch (a 2), and third valve ports of the third multi-way water valve (4) and the fourth multi-way water valve (5) are communicated with a third branch (a 3);
the cooling liquid circulating in the first branch (a 1) and the fourth branch (a 4) exchanges heat with the refrigerant circulating in the refrigerant circulation loop (1) through a water-cooled condenser (11) and a water-cooled evaporator (12) respectively.
2. The automotive battery thermal management system of claim 1, wherein: and the second branch (a 2) and the third branch (a 3) are both provided with a cooling liquid storage part (7).
3. The automotive battery thermal management system of claim 1, wherein: and an electronic expansion valve (15) is arranged between the water-cooled condenser (11) and the water-cooled evaporator (12) on the refrigerant circulating loop (1).
4. The automotive battery thermal management system of claim 1, wherein: and a gas-liquid separator (14) is arranged between the water-cooled evaporator (12) and the compressor (13) on the refrigerant circulating loop (1).
5. The automotive battery thermal management system of claim 1, wherein: and the first branch (a 1) and the fourth branch (a 4) are both provided with a water pump (16).
6. The automotive battery thermal management system of claim 1, wherein: and a heating device (17) is arranged on a pipeline communicated with the third multi-way water valve (4) or the fourth multi-way water valve (5) through the third branch (a 3).
7. The automotive battery thermal management system of claim 1, wherein: the first multi-way water valve (2), the second multi-way water valve (3), the third multi-way water valve (4) and the fourth multi-way water valve (5) are all three-way water valves.
8. The automotive battery thermal management system of claim 1, wherein: the radiator (6) is an air-cooled radiator.
9. The automotive battery thermal management system of claim 1, wherein: and a water temperature sensor (9) for detecting the temperature of the cooling liquid entering and exiting the battery (8) is arranged on the third branch (a 3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222589589.6U CN218677306U (en) | 2022-09-29 | 2022-09-29 | Automobile battery thermal management system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202222589589.6U CN218677306U (en) | 2022-09-29 | 2022-09-29 | Automobile battery thermal management system |
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| CN218677306U true CN218677306U (en) | 2023-03-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117450716A (en) * | 2023-12-21 | 2024-01-26 | 江苏鹏江电子科技有限公司 | Liquid cooling source equipment capable of circulating cooling liquid |
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2022
- 2022-09-29 CN CN202222589589.6U patent/CN218677306U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117450716A (en) * | 2023-12-21 | 2024-01-26 | 江苏鹏江电子科技有限公司 | Liquid cooling source equipment capable of circulating cooling liquid |
| CN117450716B (en) * | 2023-12-21 | 2024-03-12 | 江苏鹏江电子科技有限公司 | Liquid cooling source equipment capable of circulating cooling liquid |
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