CN210956924U - Battery thermal management system and vehicle - Google Patents
Battery thermal management system and vehicle Download PDFInfo
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- CN210956924U CN210956924U CN201922400326.4U CN201922400326U CN210956924U CN 210956924 U CN210956924 U CN 210956924U CN 201922400326 U CN201922400326 U CN 201922400326U CN 210956924 U CN210956924 U CN 210956924U
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 63
- 238000004378 air conditioning Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 6
- 230000017525 heat dissipation Effects 0.000 description 5
- 230000002528 anti-freeze Effects 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 1
- JEGUKCSWCFPDGT-UHFFFAOYSA-N h2o hydrate Chemical compound O.O JEGUKCSWCFPDGT-UHFFFAOYSA-N 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000001502 supplementing effect Effects 0.000 description 1
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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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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
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Abstract
The utility model provides a battery thermal management system and vehicle relates to electric vehicle technical field. The battery thermal management system comprises: the first circulating loop is sequentially connected with a first water pump, a driving motor, a radiator and a first heat exchanger in series; the second circulation loop is sequentially connected with a second water pump, a battery and a second heat exchanger in series; the pipeline switching unit is provided with a plurality of connecting ports, the pipeline switching unit is connected in series in the second circulating loop, and at least one connecting port is connected in series with the second heat exchanger; the first heat exchanger is provided with four connecting ports, two of the four connecting ports are connected in series in the first circulating loop, and the other two connecting ports are respectively connected with the second circulating loop and one connecting port of the pipeline switching unit. Through the setting of pipeline switching unit, can control whether second circulation circuit carries out the heat exchange through the second heat exchanger with the return circuit outside the first circulation circuit to guarantee that can both have the heat to heat for the battery at any time.
Description
Technical Field
The utility model relates to an electric vehicle technical field especially relates to a battery thermal management system and vehicle.
Background
For electric vehicles, batteries generally require heat exchange in order to improve the charge and discharge performance of the batteries under high and low temperature conditions.
In the existing technical scheme, a heat management circulation loop of a battery and a heat management circulation loop of a motor are connected through a heat exchanger for heat exchange, and then heat exchange under the condition of independent operation of the two loops is realized. In addition, in order to control the heat exchange between the two circuits, in the prior art, a three-way valve is further disposed at a position connected to the heat exchanger in the thermal management circulation loop of the battery, so as to switch whether the thermal management circulation loop of the battery flows through the heat exchanger.
However, in the prior art, only the heat management circulation loop of the motor is used for exchanging heat with the battery heat management circulation loop, and the motor is in a low-temperature state, so that the situation that heat can be used for heating the battery at any time cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a battery thermal management system and vehicle, for the heat that solves in the motor circulation return circuit can't be the technical problem of battery heating at any time, the utility model discloses mainly provide following technical scheme:
an embodiment of the utility model provides a battery thermal management system, include:
the first circulating loop is sequentially connected with a first water pump, a driving motor, a radiator and a first heat exchanger in series;
the second circulation loop is sequentially connected with a second water pump, a battery and a second heat exchanger in series;
the pipeline switching unit is provided with a plurality of connecting ports, the pipeline switching unit is connected in the second circulation loop in series, and at least one connecting port is connected with the second heat exchanger in series;
the first heat exchanger is provided with two pipelines, one pipeline is connected in series in the first circulation loop, and the other pipeline is respectively connected with the second circulation loop and an interface of the pipeline switching unit;
the pipeline switching unit is in a first communication state, the first heat exchanger and the second heat exchanger are disconnected, the pipeline switching unit is in a second communication state, the second heat exchanger is disconnected, the first heat exchanger is connected into the second circulation loop in series, the pipeline switching unit is in a third communication state, the first heat exchanger is connected into the second circulation loop in series, and the second heat exchanger is connected into the second circulation loop in series.
Specifically, the pipeline switching unit includes a first three-way valve and a second three-way valve;
the first interface of the first three-way valve is connected with the battery in series, the second interface of the first three-way valve is connected with the first interface of the second three-way valve in series, the third interface of the first three-way valve is the interface of the pipeline switching unit connected with the first heat exchanger, the second interface of the second three-way valve is connected with the interface of the second heat exchanger in series, and the third interface of the second three-way valve is connected between the second water pump and the other interface of the second heat exchanger in series.
Specifically, the second circulation loop further comprises an evaporative heat exchanger;
one end of the evaporative heat exchanger is connected with a third interface of the second three-way valve in series, and the other end of the evaporative heat exchanger is connected between the second water pump and the other interface of the second heat exchanger in series.
Specifically, the pipeline switching unit is a four-way valve, a first interface and a second interface of the four-way valve are connected in series between the battery and the second water pump, a third interface of the four-way valve is an interface for connecting the pipeline switching unit and the first heat exchanger, a fourth interface of the four-way valve is connected in series with an interface of the second heat exchanger, and the other interface of the second heat exchanger is connected between the second water pump and the second interface of the four-way valve.
Specifically, the second circulation loop further comprises an evaporative heat exchanger;
the evaporative heat exchanger is connected between a second interface of the four-way valve and the second water pump in series.
Specifically, the embodiment of the utility model provides a battery thermal management system, it still includes:
and a first interface and a second interface of the third three-way valve are connected in series between the driving motor and the radiator, and a third interface of the third three-way valve is connected between the radiator and the first water pump.
Specifically, the embodiment of the utility model provides a battery thermal management system, it still includes:
a first expansion water tank and a second expansion water tank;
the first expansion water tank is connected between the radiator and the first water pump, and the second expansion water tank is connected at a position close to the input end of the second water pump.
Specifically, an air return pipe is connected between the first expansion water tank and the first circulation loop, and an air return pipe is connected between the second expansion water tank and the second circulation loop.
Specifically, a direct current converter and a motor controller are sequentially connected in series between the first water pump and the driving motor.
Additionally, the embodiment of the utility model provides a vehicle, include: a battery thermal management system;
the battery thermal management system includes: the first circulating loop is sequentially connected with a first water pump, a driving motor, a radiator and a first heat exchanger in series;
the second circulation loop is sequentially connected with a second water pump, a battery and a second heat exchanger in series;
the pipeline switching unit is provided with a plurality of connecting ports, the pipeline switching unit is connected in the second circulation loop in series, and at least one connecting port is connected with the second heat exchanger in series;
the first heat exchanger is provided with two pipelines, one pipeline is connected in series in the first circulation loop, and the other pipeline is respectively connected with the second circulation loop and an interface of the pipeline switching unit;
the pipeline switching unit is in a first communication state, the first heat exchanger and the second heat exchanger are disconnected, the pipeline switching unit is in a second communication state, the second heat exchanger is disconnected, the first heat exchanger is connected into the second circulation loop in series, the pipeline switching unit is in a third communication state, the first heat exchanger is connected into the second circulation loop in series, and the second heat exchanger is connected into the second circulation loop in series.
Borrow by above-mentioned technical scheme, the embodiment of the utility model provides a battery thermal management system and vehicle have following advantage at least:
the embodiment of the utility model provides a pair of battery thermal management system, its first circulation circuit is connected through first heat exchanger with the second circulation circuit and carries out the heat exchange, can realize under two return circuits independent operation's the condition, utilizes the heat that driving motor produced to heat for the battery. And the first circulation loop is provided with a pipeline switching unit and a second heat exchanger, and the pipeline switching unit can control whether the second circulation loop is connected in series with the first heat exchanger or not and control whether the second heat exchanger is connected in the second circulation loop or not. Therefore, through the arrangement of the pipeline switching unit, the heat exchange between the second circulation loop and the first circulation loop can be controlled, and whether the second circulation loop exchanges heat with loops outside the first circulation loop through the second heat exchanger can also be controlled, so that the second circulation loop can be connected with other loops, such as an air conditioning loop, when the motor is in a low-temperature state, and the battery can be heated by heat at any time.
The above description is only an overview of the technical solution of the present invention, and in order to make the technical means of the present invention clearer and can be implemented according to the content of the description, the following detailed description is made with reference to the preferred embodiments of the present invention and accompanying drawings.
Drawings
Fig. 1 is a schematic structural diagram of a battery thermal management system according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of another battery thermal management system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another battery thermal management system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of another battery thermal management system according to an embodiment of the present invention;
fig. 5 is a schematic structural diagram of another battery thermal management system according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of another battery thermal management system according to an embodiment of the present invention.
The reference numerals in fig. 1 to 6 include:
101-a first circulation loop, 102-a second circulation loop, 1-a first water pump, 2-a driving motor, 3-a radiator, 4-a first heat exchanger, 5-a second water pump, 6-a battery, 7-a second heat exchanger, 8-a pipeline switching unit, 81-a first three-way valve, 82-a second three-way valve, 9-an evaporative heat exchanger, 10-a third three-way valve, 11-a first expansion water tank, 12-a second expansion water tank, 13-a direct current converter, 14-a motor controller and 15-a temperature sensor.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Example one
As shown in fig. 1 and 2, an embodiment of the present invention provides a battery thermal management system, which includes: a first circulation circuit 101, a second circulation circuit 102, a pipeline switching unit 8; a first water pump 1, a driving motor 2, a radiator 3 and a first heat exchanger 4 are sequentially connected in series in the first circulation loop 101; the second circulation loop 102 is sequentially connected with a second water pump 5, a battery 6 and a second heat exchanger 7 in series; the pipeline switching unit 8 is provided with a plurality of connecting ports, the pipeline switching unit 8 is connected in series in the second circulation loop 102, and at least one connecting port is connected in series with the second heat exchanger 7; the first heat exchanger 4 has two pipelines, one of the pipelines is connected in series in the first circulation loop 101, and the other pipeline is connected to the second circulation loop 102 and an interface of the pipeline switching unit 8.
The pipeline switching unit 8 is in a first communication state, the first heat exchanger 4 and the second heat exchanger 7 are disconnected, the pipeline switching unit 8 is in a second communication state, the second heat exchanger 7 is disconnected, the first heat exchanger 4 is connected in series to the second circulation loop 102, the pipeline switching unit 8 is in a third communication state, the first heat exchanger 4 is disconnected, and the second heat exchanger 7 is connected in series to the second circulation loop 102.
Specifically, the first circulation circuit 101 is a cooling circuit of the driving motor 2, the driving motor 2 is a motor for driving the vehicle to run, the first water pump 1 is a device for driving the cooling water or the antifreeze solution and the like to circulate in the first circulation circuit 101, the radiator 3 may be a device having a heat dissipation fin, a heat dissipation fan and a cooling pipeline in the prior art, and the first circulation circuit 101 may connect the first water pump 1, the driving motor 2 and the radiator 3 in series through a pipeline. When the first circulation loop 101 runs, the first water pump 1 drives the circulation medium to flow in the first circulation loop 101, firstly the circulation medium passes through the driving motor 2, the heat generated when the driving motor 2 works is taken away, then the circulation medium is carried by the circulation medium to be dissipated through the radiator 3, and the problem of heat dissipation of the driving motor 2 is solved through the reciprocating circulation.
The second circulation loop 102 is a circulation loop for heat dissipation and heating of the battery 6, the battery 6 is a device for providing electric energy for the electric vehicle, and is a high-voltage battery 6 with an output voltage larger than a volt, a circulation pipeline is arranged around the inside or the outside of the battery 6 for circulating a circulation medium such as cooling water or antifreeze and the like so as to take out excessive heat inside the battery 6, and the battery 6 is heated, and the circulation pipeline inside or outside the battery 6 is connected with the second circulation loop 102; the second water pump 5 is a device for driving a circulation medium such as cooling water or antifreeze in the second circulation circuit 102 to circulate.
The first heat exchanger 4 and the second heat exchanger 7 are both water-water heat exchangers, that is, two pipelines which are not communicated with each other are arranged in the heat exchangers, heat in the two pipelines is subjected to heat exchange through media or fins, the two pipelines are respectively connected in the first circulation loop 101 and the second circulation loop 102, and thus the first circulation loop 101 and the second circulation loop 102 can realize heat exchange. The first interface a and the second interface b of the first heat exchanger 4 are communicated with one passage inside the first heat exchanger 4, the first interface a and the second interface b of the first heat exchanger 4 are connected in series in the first circulation loop 101, the third interface c and the fourth interface d of the first heat exchanger 4 are communicated with the other passage inside the first heat exchanger 4, the third interface c of the first heat exchanger 4 is connected with the second circulation loop 102, and the fourth interface d of the first heat exchanger 4 is connected with one interface of the pipeline switching unit 8. The two interfaces of the second heat exchanger 7 connecting to one internal passage are connected in series in the first circulation loop 101, and the two interfaces connecting to the other internal passage of the second heat exchanger 7 can be connected in series in any heat circulation loop outside the first circulation loop 101.
The pipeline switching unit 8 may be a single valve body component, such as a four-way valve, or may be formed by combining two or more valve bodies, i.e. in any form, as long as the above three communication states can be realized, the embodiment of the present invention may not be specifically limited.
The embodiment of the utility model provides a pair of battery thermal management system, its first circulation circuit 101 is connected through first heat exchanger 4 with second circulation circuit 102 and is carried out the heat exchange, can realize under two return circuits independent operation's the condition, utilizes the heat that driving motor 2 produced to heat for battery 6. And the first circulation loop 101 is provided with a pipeline switching unit 8 and a second heat exchanger 7, and the pipeline switching unit 8 can control whether the second circulation loop 102 is connected in series with the first heat exchanger 4 or not and control whether the second heat exchanger 7 is connected in the second circulation loop 102 or not. Therefore, through the arrangement of the pipeline switching unit 8, the heat exchange between the second circulation loop 102 and the first circulation loop 101 can be controlled, and whether the second circulation loop 102 exchanges heat with a loop outside the first circulation loop 101 through the second heat exchanger 7 can be controlled, so that the second circulation loop 102 can be connected with other loops, such as an air conditioning loop, when the motor is in a low-temperature state, so as to ensure that heat can be supplied to the battery 6 at any time.
In the specific implementation, the pipeline switching unit 8 preferably has two forms:
first, as shown in fig. 1, the pipeline switching unit 8 includes a first three-way valve 81 and a second three-way valve 82; the first port e of the first three-way valve 81 is connected in series with the battery 6, the second port f of the first three-way valve 81 is connected in series with the first port h of the second three-way valve 82, the third port g of the first three-way valve 81 is a port through which the pipeline switching unit 8 is connected with the first heat exchanger 4, that is, the third port g of the first three-way valve 81 is connected with the fourth port d of the first heat exchanger 4, the second port i of the second three-way valve 82 is connected in series with a port of the second heat exchanger 7, and the third port j of the second three-way valve 82 is connected in series between the second water pump 5 and the other port of the second heat exchanger 7.
Specifically, the first three-way valve 81 and the second three-way valve 82 are each a three-way valve that can be electrically controlled, such as an electromagnetic three-way valve, that is, communication between two ports of the three-way valve can be controlled by a controller of the vehicle.
When the pipeline switching unit 8 is in the first communication state, the first port e and the second port f of the first three-way valve 81 are communicated, the third port g of the first three-way valve 81 is closed, the first port h and the third port j of the second three-way valve 82 are communicated, and the second port i of the second three-way valve 82 is closed, at this time, the first circulation loop 101 and the second circulation loop 102 do not exchange heat, and the second circulation loop 102 does not exchange heat with other circulation loops through the second heat exchanger 7. When the pipeline switching unit 8 is in the second communication state, the first port e and the third port g of the first three-way valve 81 are communicated, the second port f of the first three-way valve 81 is closed, the second port i and the third port j of the second three-way valve 82 are communicated, and the first port h of the second three-way valve 82 is closed, at this time, the first circulation loop 101 is communicated with the first heat exchanger 4 to exchange heat with the second circulation loop 102. When the pipeline switching unit 8 is in the third communication state, the first port e and the second port f of the first three-way valve 81 are communicated, the third port g of the first three-way valve 81 is closed, the first port h and the second port i of the second three-way valve 82 are communicated, the third port j of the second three-way valve 82 is closed, at this time, the second circulation loop 102 is communicated with the second heat exchanger 7, and exchanges heat with an external loop, such as an air conditioning loop, through the second heat exchanger 7, while the second circulation loop 102 does not exchange heat with the first circulation loop 101.
Further, as shown in fig. 3, the second circulation loop 102 further comprises an evaporative heat exchanger 9, such as an AC-chiller; the second heat exchanger 7 comprises four connecting ports, a first port k and a second port l of the second heat exchanger 7 are communicated with one passage in the second heat exchanger 7, a third port and a fourth port of the second heat exchanger 7 are communicated with the other passage in the second heat exchanger 7, the first port k of the second heat exchanger 7 is connected with a second port i of the second three-way valve 82 in series, and the second port l of the second heat exchanger 7 is connected with the second water pump 5 in series; a third port j of the second three-way valve 82 is connected in series with one end of the evaporative heat exchanger 9, and the other end of the evaporative heat exchanger 9 is connected between the second water pump 5 and the second port l of the second heat exchanger 7.
Specifically, when the pipeline switching unit 8 is in the first communication state, that is, when the second circulation loop 102 independently circulates and does not exchange heat with the external circulation loop, the evaporative heat exchanger 9 may heat the second circulation loop 102, and thus heat the battery 6.
Secondly, as shown in fig. 2, the pipeline switching unit 8 is a four-way valve, a first interface q and a second interface r of the four-way valve are connected in series between the battery 6 and the second water pump 5, a third interface s of the four-way valve is an interface of the pipeline switching unit 8 and the first heat exchanger 4, that is, the third interface s of the four-way valve is connected with a fourth interface d of the first heat exchanger 4, the fourth interface d of the four-way valve is connected in series with an interface of the second heat exchanger 7, and the other interface of the second heat exchanger 7 is connected between the second water pump 5 and the second interface r of the four-way valve.
Specifically, the four-way valve is an electrically controllable valve body and can be controlled by a controller of a vehicle to realize the two-to-two communication of the four interfaces and control the fluid passing speed of each passage by controlling the opening size of each interface.
When the pipeline switching unit 8 is in the first connection state, the first interface q and the second interface r of the four-way valve are connected, the third interface s and the fourth interface t of the four-way valve are closed, at this time, the first circulation loop 101 and the second circulation loop 102 do not exchange heat, and the second circulation loop 102 does not exchange heat with other circulation loops through the second heat exchanger 7.
When the pipeline switching unit 8 is in the second communication state, the first interface q and the third interface s of the four-way valve are communicated, the second interface r and the fourth interface t of the four-way valve are closed, and at this time, the first circulation loop 101 is communicated with the first heat exchanger 4 to exchange heat with the second circulation loop 102.
When the pipeline switching unit 8 is in the third communication state, the first interface k of the second heat exchanger 7 can be connected between the battery 6 and the first interface q of the four-way valve 8, the second interface r and the fourth interface t of the four-way valve are controlled to be communicated, the first interface q and the third interface s of the four-way valve are closed, the second circulation loop 102 is communicated with the second heat exchanger 7, and exchanges heat with an external loop through the second heat exchanger 7, such as an air conditioning loop, and the second circulation loop 102 does not exchange heat with the first circulation loop 101; at this time, the first interface k of the second heat exchanger 7 may also be connected between the second water pump 5 and the second interface r of the four-way valve 8, and the first interface q and the fourth interface t of the four-way valve are controlled to be communicated, the second interface r and the third interface s of the four-way valve are closed, at this time, the second circulation loop 102 is communicated with the second heat exchanger 7, and exchanges heat with an external loop, such as an air conditioning loop, through the second heat exchanger 7, while the second circulation loop 102 does not exchange heat with the first circulation loop 101.
Further, as shown in fig. 4, the second circulation loop 102 further includes an evaporative heat exchanger 9; the second heat exchanger 7 comprises four connecting ports, a first port k and a second port l of the second heat exchanger 7 are communicated with one passage in the second heat exchanger 7, and a third port and a fourth port of the second heat exchanger 7 are communicated with the other passage in the second heat exchanger 7; the evaporative heat exchanger 9 is connected in series between the second interface r of the four-way valve and the second water pump 5, the second interface l of the second heat exchanger 7 is connected in series with the fourth interface t of the four-way valve, and the first interface k of the second heat exchanger 7 is connected between the evaporative heat exchanger 9 and the second water pump 5.
Specifically, when the pipeline switching unit 8 is in the first communication state, that is, when the second circulation loop 102 independently circulates and does not exchange heat with the external circulation loop, the evaporative heat exchanger 9 may heat the second circulation loop 102, and thus heat the battery 6.
As shown in fig. 3 and fig. 4, in a specific implementation, the battery thermal management system according to an embodiment of the present invention further includes: and a first port m and a second port n of the third three-way valve 10 are connected in series between the driving motor 2 and the radiator 3, and a third port p of the third three-way valve 10 is connected between the radiator 3 and the first water pump 1.
In particular, the third three-way valve 10 is an electrically controllable three-way valve, such as an electromagnetic three-way valve, i.e. the communication between the two interfaces of the three-way valve can be controlled by a controller of the vehicle. Through the arrangement of the third three-way valve 10, whether the radiator 3 is connected to the first circulation loop 101 can be controlled, so that when the second circulation loop 102 needs to receive heat in the first circulation loop 101, the first interface m of the third three-way valve 10 can be controlled to be communicated with the third interface p, the second interface n of the third three-way valve 10 is controlled to be closed, the radiator 3 is disconnected outside the first circulation loop 101, heat of the driving motor 2 is transmitted to the second circulation loop 102 through the first heat exchanger 4, and then the battery 6 is heated. When the second circulation loop 102 needs to dissipate heat through the first circulation loop 101, the first interface m and the second interface n of the third three-way valve 10 can be controlled to be communicated, the third interface p of the third three-way valve 10 is controlled to be closed, the radiator 3 is connected in the first circulation loop 101, so that heat of the driving motor 2 is dissipated through the radiator 3, then the circulation medium with lower temperature takes away heat in the second circulation loop 102 through the first heat exchanger 4, and further heat dissipation of the battery 6 is achieved.
As shown in fig. 5 and fig. 6, in a specific implementation, the battery thermal management system according to an embodiment of the present invention further includes: a first expansion tank 11 and a second expansion tank 12; the first expansion tank 11 is connected between the radiator 3 and the first water pump 1, and the second expansion tank 12 is connected at a position close to the input end of the second water pump 5.
Specifically, the first expansion tank 11 and the second expansion tank 12 are respectively arranged in the first circulation loop 101 and the second circulation loop 102, so that the two loops are always in an independent state, namely no liquid exchange exists, so that the two expansion tanks can respectively carry out liquid supplementing and air exhausting on the respective circulation loops, and are not influenced by each other.
Further, an air return pipe is connected between the first expansion water tank 11 and the first circulation circuit 101, and an air return pipe is connected between the second expansion water tank 12 and the second circulation circuit 102.
Here, the connection position of the gas return pipe of the first expansion tank 11 in the first circulation circuit 101 may not be particularly limited as long as the gas exhaust of the first circulation circuit 101 can be achieved. The connection position of the return pipe of the second expansion tank 12 in the second circulation circuit 102 is not particularly limited as long as the exhaust of the second circulation circuit 102 can be achieved.
As shown in fig. 5 and fig. 6, in a specific implementation, the battery thermal management system provided in the embodiment of the present invention further includes: a dc converter 13 and a motor controller 14; the dc converter 13 and the motor controller 14 are sequentially connected in series between the first water pump 1 and the driving motor 2.
Further, temperature sensors 15 may be provided at a plurality of positions of the first circulation circuit 101 and the second circulation circuit 102, thereby monitoring the temperatures of the respective portions of the first circulation circuit 101 and the second circulation circuit 102.
Example two
The embodiment of the utility model provides a second provides a vehicle, it includes: a battery thermal management system as shown in fig. 1 and 2; the battery thermal management system includes: a first circulation circuit 101, a second circulation circuit 102, a pipeline switching unit 8; a first water pump 1, a driving motor 2, a radiator 3 and a first heat exchanger 4 are sequentially connected in series in the first circulation loop 101; the second circulation loop 102 is sequentially connected with a second water pump 5, a battery 6 and a second heat exchanger 7 in series; the pipeline switching unit 8 is provided with a plurality of connecting ports, the pipeline switching unit 8 is connected in series in the second circulation loop 102, and at least one connecting port is connected in series with the second heat exchanger 7; the first heat exchanger 4 has four connection ports, two of which are connected in series in the first circulation loop 101, and the other two connection ports are respectively connected to the second circulation loop 102 and one connection port of the pipeline switching unit 8.
The pipeline switching unit 8 is in a first communication state, the first heat exchanger 4 and the second heat exchanger 7 are disconnected, the pipeline switching unit 8 is in a second communication state, the second heat exchanger 7 is disconnected, the first heat exchanger 4 is connected in series to the second circulation loop 102, the pipeline switching unit 8 is in a third communication state, the first heat exchanger 4 is disconnected, and the second heat exchanger 7 is connected in series to the second circulation loop 102.
Specifically, the battery thermal management system in the second embodiment may directly use the specific implementation structure of the battery thermal management system provided in the first embodiment, for reference, the related contents described in the first embodiment are referred to, and details are not repeated here.
The embodiment of the utility model provides a pair of battery thermal management system, its first circulation circuit 101 is connected through first heat exchanger 4 with second circulation circuit 102 and is carried out the heat exchange, can realize under two return circuits independent operation's the condition, utilizes the heat that driving motor 2 produced to heat for battery 6. And the first circulation loop 101 is provided with a pipeline switching unit 8 and a second heat exchanger 7, and the pipeline switching unit 8 can control whether the second circulation loop 102 is connected in series with the first heat exchanger 4 or not and control whether the second heat exchanger 7 is connected in the second circulation loop 102 or not. Therefore, through the arrangement of the pipeline switching unit 8, the heat exchange between the second circulation loop 102 and the first circulation loop 101 can be controlled, and whether the second circulation loop 102 exchanges heat with a loop outside the first circulation loop 101 through the second heat exchanger 7 can be controlled, so that the second circulation loop 102 can be connected with other loops, such as an air conditioning loop, when the motor is in a low-temperature state, so as to ensure that heat can be supplied to the battery 6 at any time.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in any way, and any simple modification, equivalent change and modification made by the technical spirit of the present invention to the above embodiments are all within the scope of the technical solution of the present invention.
Claims (10)
1. A battery thermal management system, comprising:
the first circulating loop is sequentially connected with a first water pump, a driving motor, a radiator and a first heat exchanger in series;
the second circulation loop is sequentially connected with a second water pump, a battery and a second heat exchanger in series;
the pipeline switching unit is provided with a plurality of connecting ports, the pipeline switching unit is connected in the second circulation loop in series, and at least one connecting port is connected with the second heat exchanger in series;
the first heat exchanger is provided with two pipelines, one pipeline is connected in series in the first circulation loop, and the other pipeline is respectively connected with the second circulation loop and an interface of the pipeline switching unit;
the pipeline switching unit is in a first communication state, the first heat exchanger and the second heat exchanger are disconnected, the pipeline switching unit is in a second communication state, the second heat exchanger is disconnected, the first heat exchanger is connected into the second circulation loop in series, the pipeline switching unit is in a third communication state, the first heat exchanger is connected into the second circulation loop in series, and the second heat exchanger is connected into the second circulation loop in series.
2. The battery thermal management system of claim 1,
the pipeline switching unit comprises a first three-way valve and a second three-way valve;
the first interface of the first three-way valve is connected with the battery in series, the second interface of the first three-way valve is connected with the first interface of the second three-way valve in series, the third interface of the first three-way valve is the interface of the pipeline switching unit connected with the first heat exchanger, the second interface of the second three-way valve is connected with the interface of the second heat exchanger in series, and the third interface of the second three-way valve is connected between the second water pump and the other interface of the second heat exchanger in series.
3. The battery thermal management system of claim 2,
the second circulation loop further comprises an evaporative heat exchanger;
one end of the evaporative heat exchanger is connected with a third interface of the second three-way valve in series, and the other end of the evaporative heat exchanger is connected between the second water pump and the other interface of the second heat exchanger in series.
4. The battery thermal management system of claim 1,
the pipeline switching unit is a four-way valve, a first interface and a second interface of the four-way valve are connected between the battery and the second water pump in series, a third interface of the four-way valve is an interface for connecting the pipeline switching unit and the first heat exchanger, and a fourth interface of the four-way valve is connected with an interface of the second heat exchanger in series.
5. The battery thermal management system of claim 4,
the second circulation loop further comprises an evaporative heat exchanger;
the evaporative heat exchanger is connected between a second interface of the four-way valve and the second water pump in series.
6. The battery thermal management system of claim 1, further comprising:
and a first interface and a second interface of the third three-way valve are connected in series between the driving motor and the radiator, and a third interface of the third three-way valve is connected between the radiator and the first water pump.
7. The battery thermal management system of claim 1, further comprising:
a first expansion water tank and a second expansion water tank;
the first expansion water tank is connected between the radiator and the first water pump, and the second expansion water tank is connected at a position close to the input end of the second water pump.
8. The battery thermal management system of claim 7,
an air return pipe is connected between the first expansion water tank and the first circulation loop, and an air return pipe is connected between the second expansion water tank and the second circulation loop.
9. The battery thermal management system of claim 1,
and a direct current converter and a motor controller are sequentially connected between the first water pump and the driving motor in series.
10. A vehicle, characterized by comprising:
the battery thermal management system of any of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400326.4U CN210956924U (en) | 2019-12-27 | 2019-12-27 | Battery thermal management system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922400326.4U CN210956924U (en) | 2019-12-27 | 2019-12-27 | Battery thermal management system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210956924U true CN210956924U (en) | 2020-07-07 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922400326.4U Active CN210956924U (en) | 2019-12-27 | 2019-12-27 | Battery thermal management system and vehicle |
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| Country | Link |
|---|---|
| CN (1) | CN210956924U (en) |
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2019
- 2019-12-27 CN CN201922400326.4U patent/CN210956924U/en active Active
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