CN110350266B - Battery liquid cooling system and battery - Google Patents
Battery liquid cooling system and battery Download PDFInfo
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- CN110350266B CN110350266B CN201910495829.6A CN201910495829A CN110350266B CN 110350266 B CN110350266 B CN 110350266B CN 201910495829 A CN201910495829 A CN 201910495829A CN 110350266 B CN110350266 B CN 110350266B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/61—Types of temperature control
- H01M10/613—Cooling or keeping cold
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/656—Means for temperature control structurally associated with the cells characterised by the type of heat-exchange fluid
- H01M10/6567—Liquids
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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
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- Automation & Control Theory (AREA)
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- Battery Mounting, Suspending (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The invention relates to a battery liquid cooling system and a battery, wherein the system comprises a connecting pipeline, a liquid cooling box, a liquid pump, a heat exchange device, a three-way device and a non-return device; the three-way device is provided with a first port, a second port and a third port, the second port is connected with the liquid pump, the third port is connected with the liquid cooling box, the liquid cooling box is connected with the liquid inlet end of the heat exchange device through the liquid pump, and the liquid outlet end of the heat exchange device is connected with the first port through the connecting pipeline; the non-return device is used for preventing the cooling liquid from flowing reversely, and comprises a first non-return piece, a second non-return piece and a third non-return piece, wherein the first non-return piece is arranged between the second port and the liquid pump, the second non-return piece is arranged between the third port and the liquid cooling box, and the third non-return piece is arranged on the connecting pipeline. The invention can recycle the leaked cooling liquid, avoid the continuous leakage of the cooling liquid, improve the safety and save the energy.
Description
Technical Field
The invention relates to the technical field of new energy, in particular to a battery liquid cooling system and a battery.
Background
With the increasing exhaustion of fossil energy such as petroleum, coal and natural gas and the increasing concern of people on environmental problems, especially the automobile manufacturing industry faces significant research, and new energy automobiles are required to replace traditional fuel automobiles.
Most new energy automobiles in the market adopt the power battery pack as a main energy form of the new energy automobile, and the performance of the new energy automobile can directly influence the overall performance of the new energy automobile, so that many large automobile manufacturers take the power battery pack as an important research and development project.
The liquid cooling system of the power battery pack comprises a power battery box, a power supply, a water pump and a liquid cooling box, wherein the power battery box comprises a battery module, a liquid cooling pipeline, a temperature detection assembly and an outer box body wrapped outside, and the liquid cooling pipeline in the liquid cooling box, the water pump and the battery power box is connected in series. The power battery pack liquid cooling system can effectively manage the temperature of the battery module, so that the battery module can work at the optimal temperature, and the performance of the battery is improved to the maximum extent, so that the whole liquid cooling system becomes complex and fragile, the liquid cooling pipeline of the liquid cooling system deforms under the extrusion of external force, or the internal pressure of the liquid cooling pipeline is increased due to the blockage of impurities on the liquid cooling pipeline, and finally the liquid cooling pipeline bursts because the redundant pressure cannot be removed; or the interface of the liquid cooling system is loosened and leakage occurs due to high-frequency vibration, so that the insulation grade in the outer box body is reduced, and the hidden danger of electric shock is generated.
The power battery pack liquid cooling system with the high safety coefficient is provided in the patent No. CN201821202323.9, the pressure in a pipeline can be increased due to the blockage of a liquid cooling pipeline, when a liquid cooling loop is damaged, cooling liquid which needs to enter a liquid cooling pipe in a battery box is drained back to the liquid cooling box by using a return valve, the impact on the internal blocked pipeline is avoided, and meanwhile, an alarm function can be provided when the cooling liquid leaks, so that the safety of the system is improved; however, the leakage of the coolant in the battery pack cannot be prevented, and the coolant can be replenished only from the outside, which wastes the coolant.
In order to solve the above problems, research on a new battery liquid cooling system is an urgent problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above problems in the prior art, an object of the present invention is to provide a battery liquid cooling system, which can recover leaked cooling liquid, prevent the cooling liquid from leaking into a battery pack, improve the safety of the battery pack, and reuse the leaked cooling liquid, thereby saving energy and reducing cost.
In order to solve the above problems, the present invention provides a battery liquid cooling system, including: the device comprises a connecting pipeline, a liquid cooling box, a liquid pump, a heat exchange device, a three-way device and a non-return device;
the three-way device is provided with a first port, a second port and a third port, the second port is connected with the liquid pump, the third port is connected with the liquid cooling box, the liquid cooling box is connected with the liquid inlet end of the heat exchange device through the liquid pump, and the liquid outlet end of the heat exchange device is connected with the first port through the connecting pipeline;
the non-return device is used for preventing the cooling liquid from flowing reversely, and comprises a first non-return piece, a second non-return piece and a third non-return piece, wherein the first non-return piece is arranged between the second port and the liquid pump, the second non-return piece is arranged between the third port and the liquid cooling box, and the third non-return piece is arranged on the connecting pipeline.
Further, the liquid cooling box is provided with a liquid level sensor for detecting the storage capacity of the cooling liquid in the liquid cooling box.
Further, the system also comprises a controller, and the liquid pump and the check device are electrically connected with the controller.
Further, the liquid pump is a bi-directional pump.
Further, the check device is a one-way valve.
Another aspect of the present invention further provides a battery liquid cooling system, including: connecting tube, liquid cooling case, liquid pump, heat transfer device and tee bend device, tee bend device is equipped with first port, second port and third port, first port the second port with the third port all can be opened or close, the second port with the liquid pump is connected, the third port with the liquid cooling case is connected, the liquid cooling case passes through the liquid pump with the heat transfer device inlet end is connected, heat transfer device goes out the liquid end and passes through connecting tube with first port is connected.
Further, the liquid cooling box is provided with a liquid level sensor for detecting the storage capacity of the cooling liquid in the liquid cooling box.
Further, the system also comprises a controller, and the liquid pump and the three-way device are electrically connected with the controller.
Further, the liquid pump is a bi-directional pump.
In another aspect, the invention also provides a battery, which includes a battery element and the battery liquid cooling system, and the system is disposed in the battery and is used for cooling the battery element.
Due to the technical scheme, the invention has the following beneficial effects:
1) the battery liquid cooling system can recover leaked cooling liquid, prevent the cooling liquid from leaking into the battery pack and improve the safety of the battery pack.
2) The battery liquid cooling system can recycle leaked cooling liquid, save energy and reduce cost.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings used in the description of the embodiment or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a battery liquid cooling system and a battery according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a battery liquid cooling system and a battery according to a second embodiment of the present invention;
fig. 3 is a schematic structural diagram of a battery liquid cooling system and a battery according to a third embodiment of the present invention;
fig. 4 is a schematic structural diagram of a battery liquid cooling system and a battery according to an embodiment of the invention.
The device comprises a connecting pipeline 1, a liquid cooling tank 2, a liquid pump 3, a heat exchange device 4, a three-way device 5, a check device 6, a first check piece 61, a second check piece 62, a third check piece 63, a heater 7, a second temperature detection device 8, a battery element 9, a battery module 91, a first temperature detection device 92 and a liquid cooling plate 93.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic may be included in at least one implementation of the invention. In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "top", "bottom", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. Moreover, the terms "first," "second," and the like are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or described herein.
Example one
In the present embodiment, a battery liquid cooling system and a battery are provided, as shown in fig. 1:
the system comprises: the device comprises a connecting pipeline 1, a liquid cooling tank 2, a liquid pump 3, a heat exchange device 4, a three-way device 5 and a non-return device 6;
the three-way device 5 is provided with a first port, a second port and a third port, the second port is connected with the liquid pump 3, the third port is connected with the liquid cooling tank 2, the liquid cooling tank 2 is connected with a liquid inlet end of the heat exchange device 4 through the liquid pump 3, and the heat exchange device 4 is connected with the first port through the connecting pipeline 1;
the check device 6 is used for preventing the reverse flow of the coolant, and the check device 6 includes a first check 61, a second check 62, and a third check 63, the first check 61 is disposed between the second port and the liquid pump 3, the second check 62 is disposed between the third port and the liquid-cooled tank 2, and the third check 63 is disposed on the connecting pipe 1.
Preferably, the liquid-cooled tank 2 is provided with a level sensor 21 for detecting the storage amount of the cooling liquid in the liquid-cooled tank 2.
Preferably, the liquid pump 3 is a bidirectional pump.
Preferably, the heat exchange device 4 is a heat exchanger.
Preferably, said non-return means 6 is a one-way valve.
In particular, the system further comprises a controller to which the liquid pump 2, the level sensor 21 and the non-return device 6 are electrically connected.
The battery includes battery element 9 and the above-mentioned battery liquid cooling system, the system sets up in the battery for the cooling battery element 9.
Specifically, the battery element 9 is electrically connected to the controller, and the battery element 9 includes: a battery module 91, a first temperature detection device 92 and a liquid cooling plate 93; the temperature detection device 92 is electrically connected with the battery module 91 and is used for detecting the temperature of the battery module 91; the liquid cooling plate 93 is connected to the battery module 91, and is used for cooling the battery module 91.
Specifically, when battery liquid cooling system normally worked, the coolant liquid in the liquid cooling case 2 passed through 2 extractions of liquid pump extremely heat transfer device 4, heat transfer device 4 with connecting tube 1 connects, connecting tube 1 passes through liquid cold plate 93, liquid cold plate 93 with battery module 91 connects, cools off battery module 91 makes its temperature keep at normal operating temperature, and passes through first temperature-detecting device 92 inspects, connecting tube 1 with first port is connected, the coolant liquid passes through first port, through the third port flows in liquid cooling case 2 forms the working path of coolant liquid, guarantees that the battery normally works.
Specifically, when the battery liquid cooling system detects, level sensor 21 is through the inspection liquid level in the liquid cooling case 2, when the liquid level in the liquid cooling case 2 is less than the default, the battery has the leakage phenomenon, the controller closes second non return 62 with third non return 63, guarantees that the coolant liquid can not flow in the battery element 9, simultaneously the controller opens first non return 61, and controller control liquid pump 3 draws back the coolant liquid in the battery element 9, liquid pump 3 also draws heat transfer device 4 with the coolant liquid in the connecting tube 1 guarantees that the coolant liquid is retrieved in the liquid cooling case 2, can prevent the leakage of coolant liquid, with the coolant liquid retrieve in the liquid cooling case 2, can reuse the coolant liquid in the liquid cooling case 2, the energy saving.
The embodiment provides a battery liquid cooling system and battery adopts non return device to carry out the control in coolant liquid route, can retrieve the coolant liquid of leaking, avoids the coolant liquid to leak inside the battery package, improves the security of battery package, can recycle the coolant liquid of leaking simultaneously, the energy saving, reduce cost.
Example two
The second embodiment provides a battery liquid cooling system and a battery, as shown in fig. 2:
the system comprises: the device comprises a connecting pipeline 1, a liquid cooling tank 2, a liquid pump 3, a heat exchange device 4, a three-way device 5, a non-return device 6, a heater 7 and a second temperature detection device 8;
the three-way device 5 is provided with a first port, a second port and a third port, the first port is connected with the liquid outlet end of the battery pack 1, the second port is connected with the liquid pump 3, the third port is connected with the liquid cooling box 2, the liquid cooling box 2 is connected with the liquid inlet end of the heat exchange device 4 through the liquid pump 3, and the liquid outlet end of the heat exchange device 4 is connected with the liquid inlet end of the battery pack 1;
the check device 6 is used for preventing the reverse flow of the coolant, and the check device 6 includes a first check 61, a second check 62, and a third check 63, the first check 61 is disposed between the second port and the liquid pump 3, the second check 62 is disposed between the third port and the liquid-cooled tank 2, and the third check 63 is disposed on the connecting pipe 1.
Preferably, the liquid-cooled tank 2 is provided with a level sensor 21 for detecting the storage amount of the cooling liquid in the liquid-cooled tank 2.
Preferably, the liquid pump 3 is a bidirectional pump.
Preferably, the heat exchange device 4 is a heat exchanger.
Preferably, said non-return means 6 is a one-way valve.
In particular, the system further comprises a controller to which the liquid pump 2, the level sensor 21 and the non-return device 6 are electrically connected.
Preferably, the heater 7 is disposed between the heat exchanging device 4 and the liquid inlet end of the battery pack 1, and is used for heating the cooling liquid.
Preferably, the heater 7 is a PTC heater.
Preferably, the second temperature detecting means 8 is provided on the connecting pipe 1 for detecting the temperature of the cooling liquid flowing into the connecting pipe 1.
The battery includes battery element 9 and the above-mentioned battery liquid cooling system, the system sets up in the battery for the cooling battery element 9.
Specifically, the battery element 9 is electrically connected to the controller, and the battery element 9 includes: a battery module 91, a first temperature detection device 92 and a liquid cooling plate 93; the temperature detection device 92 is electrically connected with the battery module 91 and is used for detecting the temperature of the battery module 91; the liquid cooling plate 93 is connected to the battery module 91, and is used for cooling the battery module 91.
Specifically, when the battery liquid cooling system works normally, the coolant in the liquid cooling tank 2 is pumped to the heat exchanging device 4 through the liquid pump 2, the heat exchanging device 4 is connected with the connecting pipeline 1, the connecting pipeline 1 passes through the liquid cooling plate 93, the liquid cooling plate 93 is connected with the battery module 91 to cool the battery module 91, so that the temperature of the battery module 91 is kept at a normal working temperature, the first temperature detection device 92 is used for checking, the connecting pipeline 1 is connected with the first port, the coolant flows into the liquid cooling tank 2 through the third port through the first port to form a working path of the coolant, so as to ensure the normal work of the battery, and meanwhile, due to the arrangement of the heater 7, when the temperature of the battery module 91 needs to be raised, the coolant can be heated by the heater 7 to raise the temperature, the efficiency is improved, and the energy waste is reduced.
Specifically, when the battery liquid cooling system is detected, the liquid level sensor 21 detects the liquid level in the liquid cooling box 2, when the liquid level in the liquid cooling box 2 is lower than a preset value, the battery has a leakage phenomenon, the controller closes the second check part 62 and the third check part 63, so as to ensure that the cooling liquid cannot flow into the battery element 9, meanwhile, the controller opens the first check part 61, and controls the liquid pump 3 to draw back the cooling liquid in the battery element 9, the liquid pump 3 also draws the cooling liquid in the heat exchange device 4 and the connecting pipeline 1, so as to ensure that the cooling liquid is recycled into the liquid cooling box 2, so as to prevent the leakage of the cooling liquid, recycle the cooling liquid into the liquid cooling box 2, reuse the cooling liquid in the liquid cooling box 2, save energy, and due to the second temperature detection device 8, through the second temperature-detecting device 8 detects the temperature of the cooling liquid in the connecting pipeline 1 is compared with the first temperature-detecting device 92, the temperature of the battery can be integrally regulated, and the battery can be accurately ensured to be at an ideal working temperature.
The difference between the second embodiment and the first embodiment is that the addition of the heater and the second temperature detection device can provide a heating function and accurately control the temperature of the battery for the battery, increase the functionality of the system, and adopt the non-return device to control the cooling liquid path, so that the leaked cooling liquid can be recycled, the cooling liquid is prevented from leaking into the battery pack, the safety of the battery pack is improved, and meanwhile, the leaked cooling liquid can be recycled, so that the energy is saved and the cost is reduced.
EXAMPLE III
In a third embodiment, a battery liquid cooling system and a battery are provided, as shown in fig. 3,
the system comprises: the device comprises a connecting pipeline 1, a liquid cooling tank 2, a liquid pump 3, a heat exchange device 4 and a three-way device 5;
the three-way device 5 is provided with a first port, a second port and a third port, the first port, the second port and the third port can be opened or closed, the second port is connected with the liquid pump 3, the third port is connected with the liquid cooling tank 2, the liquid cooling tank 2 is connected with a liquid inlet end of the heat exchange device 4 through the liquid pump 3, and the heat exchange device 4 is connected with the first port through the connecting pipeline 1.
Preferably, the liquid-cooled tank 2 is provided with a level sensor 21 for detecting the storage amount of the cooling liquid in the liquid-cooled tank 2.
Preferably, the liquid pump 3 is a bidirectional pump.
Preferably, the heat exchange device 4 is a heat exchanger.
Preferably, the system further comprises a controller, to which the liquid pump 2, the level sensor 21 and the three-way device 5 are electrically connected. The battery includes battery element 9 and the above-mentioned battery liquid cooling system, the system sets up in the battery for the cooling battery element 9.
Specifically, the battery element 9 is electrically connected to the controller, and the battery element 9 includes: a battery module 91, a first temperature detection device 92 and a liquid cooling plate 93; the temperature detection device 92 is electrically connected with the battery module 91 and is used for detecting the temperature of the battery module 91; the liquid cooling plate 93 is connected to the battery module 91, and is used for cooling the battery module 91.
Specifically, when battery liquid cooling system normally worked, the coolant liquid in the liquid cooling case 2 passed through 2 extractions of liquid pump extremely heat transfer device 4, heat transfer device 4 with connecting tube 1 connects, connecting tube 1 passes through liquid cold plate 93, liquid cold plate 93 with battery module 91 connects, cools off battery module 91 makes its temperature keep at normal operating temperature, and passes through first temperature-detecting device 92 inspects, connecting tube 1 with first port is connected, the coolant liquid passes through first port, through the third port flows in liquid cooling case 2 forms the working path of coolant liquid, guarantees that the battery normally works.
Specifically, when the battery liquid cooling system detects, level sensor 21 is through the inspection liquid level in the liquid cooling case 2, works as when the liquid level in the liquid cooling case 2 is less than the default, the battery has the leakage phenomenon, controller control third port seal with the second port is opened, guarantees controller control liquid pump 2 takes back the coolant liquid in the battery component 9 extremely liquid cooling case 2, simultaneously, controller control liquid pump 2 takes back heat transfer device 4 with the coolant liquid in the connecting tube 1 guarantees that no coolant liquid flows in to battery component 9, can prevent the leakage of coolant liquid, with the coolant liquid retrieve in the liquid cooling case 2, can reuse the coolant liquid in the liquid cooling case 2, the energy saving.
The third embodiment is different from the first embodiment in that the leaked cooling liquid can be recovered by controlling the opening or closing of three ends of the three-way device, so that the cooling liquid is prevented from leaking into the battery pack, the safety of the battery pack is improved, the complexity of the system is reduced, the leaked cooling liquid can be recycled, the energy is saved, and the cost is reduced.
Example four
In a fourth embodiment, a battery liquid cooling system is provided, as shown in fig. 4,
the system comprises: the device comprises a connecting pipeline 1, a liquid cooling tank 2, a liquid pump 3, a heat exchange device 4, a three-way device 5, a heater 7 and a second temperature detection device 8;
the three-way device 5 is provided with a first port, a second port and a third port, the first port, the second port and the third port can be opened or closed, the second port is connected with the liquid pump 3, the third port is connected with the liquid cooling tank 2, the liquid cooling tank 2 is connected with a liquid inlet end of the heat exchange device 4 through the liquid pump 3, and the heat exchange device 4 is connected with the first port through the connecting pipeline 1.
Preferably, the liquid-cooled tank 2 is provided with a level sensor 21 for detecting the storage amount of the cooling liquid in the liquid-cooled tank 2.
Preferably, the liquid pump 3 is a bidirectional pump.
Preferably, the heat exchange device 4 is a heat exchanger.
Preferably, the heater 7 is disposed between the heat exchanging device 4 and the liquid inlet end of the battery pack 1, and is used for heating the cooling liquid.
Preferably, the heater 7 is a PTC heater.
Preferably, the second temperature detecting means 8 is provided on the connecting pipe 1 for detecting the temperature of the cooling liquid flowing into the connecting pipe 1.
Preferably, the system further comprises a controller, and the liquid pump 2, the liquid level sensor 21 and the three-way device 5 are all electrically connected with the controller.
The battery includes battery element 9 and the above-mentioned battery liquid cooling system, the system sets up in the battery for the cooling battery element 9.
Specifically, the battery element 9 is electrically connected to the controller, and the battery element 9 includes: a battery module 91, a first temperature detection device 92 and a liquid cooling plate 93; the temperature detection device 92 is electrically connected with the battery module 91 and is used for detecting the temperature of the battery module 91; the liquid cooling plate 93 is connected to the battery module 91, and is used for cooling the battery module 91.
Specifically, when the battery liquid cooling system works normally, the coolant in the liquid cooling tank 2 is pumped to the heat exchanging device 4 through the liquid pump 2, the heat exchanging device 4 is connected with the connecting pipeline 1, the connecting pipeline 1 passes through the liquid cooling plate 93, the liquid cooling plate 93 is connected with the battery module 91 to cool the battery module 91, so that the temperature of the battery module 91 is kept at a normal working temperature, the first temperature detection device 92 is used for checking, the connecting pipeline 1 is connected with the first port, the coolant flows into the liquid cooling tank 2 through the third port through the first port to form a working path of the coolant, so as to ensure the normal work of the battery, and meanwhile, due to the arrangement of the heater 7, when the temperature of the battery module 91 needs to be raised, the coolant can be heated by the heater 7 to raise the temperature, the efficiency is improved, and the energy waste is reduced.
Specifically, when the battery liquid cooling system detects, level sensor 21 is through the inspection liquid level in liquid cooling case 2, works as when liquid level in liquid cooling case 2 is less than the default, the battery has the leakage phenomenon, controller control third port seal with the second port is opened, guarantees controller control liquid pump 2 takes back coolant liquid in battery element 9 extremely liquid cooling case 2, simultaneously, controller control liquid pump 2 takes back heat transfer device 4 with coolant liquid in connecting tube 1 guarantees that no coolant liquid flows in to battery element 9 can prevent the leakage of coolant liquid, with the coolant liquid retrieve to in liquid cooling case 2, can reuse coolant liquid in liquid cooling case 2, the energy saving, owing to be equipped with second temperature detection device 8, through second temperature detection device 8 detects the temperature of the coolant liquid in connecting tube 1 with first temperature detection device 92 carries out the ratio and compares And moreover, the temperature of the battery can be integrally regulated and controlled, so that the battery can be accurately ensured to be at an ideal working temperature.
The difference between the third embodiment and the fourth embodiment is that the heater and the second temperature detection device are added, the heating function and the accurate temperature of the battery can be provided for the battery, the functionality of the system is increased, the leaked cooling liquid can be recycled by controlling the opening or closing of the three ends of the three-way device, the leakage of the cooling liquid into the battery pack is avoided, the safety of the battery pack is improved, the complexity of the system is reduced, the leaked cooling liquid can be recycled, the energy is saved, and the cost is reduced.
The foregoing description has disclosed fully preferred embodiments of the present invention. It should be noted that those skilled in the art can make modifications to the embodiments of the present invention without departing from the scope of the appended claims. Accordingly, the scope of the appended claims is not to be limited to the specific embodiments described above.
Claims (4)
1. A battery liquid cooling system, comprising: connecting tube (1), liquid cooling case (2), liquid pump (3), heat transfer device (4), its characterized in that still includes: a three-way device (5) and a check device (6);
the three-way device (5) is provided with a first port, a second port and a third port, the second port is connected with the liquid pump (3), the third port is connected with the liquid cooling box (2), the liquid cooling box (2) is connected with the liquid inlet end of the heat exchange device (4) through the liquid pump (3), and the liquid outlet end of the heat exchange device (4) is connected with the first port through the connecting pipeline (1);
the check device (6) is used for preventing the reverse flow of the cooling liquid, the check device (6) comprises a first check piece (61), a second check piece (62) and a third check piece (63), the first check piece (61) is arranged between the second port and the liquid pump (3), the second check piece (62) is arranged between the third port and the liquid cooling box (2), and the third check piece (63) is arranged on the connecting pipe (1);
the liquid cooling box (2) is provided with a liquid level sensor (21) for detecting the storage capacity of cooling liquid in the liquid cooling box (2);
the system also comprises a controller, the liquid pump (3) and the non-return device (6) are electrically connected with the controller, the controller is set to control the second non-return piece (62) and the third non-return piece (63) to be closed to ensure that the cooling liquid cannot flow into the battery element (9) when the liquid level in the liquid cooling box (2) is lower than a preset value, and simultaneously control the first non-return piece (61) to be opened, the controller controls the liquid pump (3) to pump the cooling liquid in the battery element (9), and the liquid pump (3) also pumps the cooling liquid in the heat exchange device (4) and the connecting pipeline (1) to ensure that the cooling liquid is recycled into the liquid cooling box (2).
2. A battery liquid cooling system according to claim 1, characterized in that the liquid pump (3) is a bidirectional pump.
3. A battery liquid cooling system according to claim 1, characterized in that said non-return means (6) is a one-way valve.
4. A battery, characterized in that it comprises a battery element (9) and a battery liquid cooling system as claimed in any one of claims 1-3, said system being arranged in said battery for cooling said battery element (9).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910495829.6A CN110350266B (en) | 2019-06-10 | 2019-06-10 | Battery liquid cooling system and battery |
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| CN201910495829.6A CN110350266B (en) | 2019-06-10 | 2019-06-10 | Battery liquid cooling system and battery |
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| CN110350266B true CN110350266B (en) | 2021-09-14 |
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Cited By (1)
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| CN112816882A (en) * | 2021-01-22 | 2021-05-18 | 中国第一汽车股份有限公司 | Test device and test method for leakage of cooling liquid of liquid-cooled power battery assembly |
| CN115324712B (en) * | 2022-09-06 | 2023-10-27 | 中广核工程有限公司 | Cooling liquid charging and discharging system |
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