CN110444831A - A kind of electric automobile power battery heat management system, method and electric car - Google Patents
A kind of electric automobile power battery heat management system, method and electric car Download PDFInfo
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- CN110444831A CN110444831A CN201910624710.4A CN201910624710A CN110444831A CN 110444831 A CN110444831 A CN 110444831A CN 201910624710 A CN201910624710 A CN 201910624710A CN 110444831 A CN110444831 A CN 110444831A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
- B60L58/24—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries
- B60L58/26—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries for controlling the temperature of batteries by cooling
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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
- H01M10/65—Means for temperature control structurally associated with the cells
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6554—Rods or plates
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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
- H01M10/655—Solid structures for heat exchange or heat conduction
- H01M10/6556—Solid parts with flow channel passages or pipes for heat exchange
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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
- H01M10/6568—Liquids characterised by flow circuits, e.g. loops, located externally to the cells or cell casings
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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
- H01M10/6569—Fluids undergoing a liquid-gas phase change or transition, e.g. evaporation or condensation
-
- 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
- H01M10/66—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells
- H01M10/663—Heat-exchange relationships between the cells and other systems, e.g. central heating systems or fuel cells the system being an air-conditioner or an engine
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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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- General Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Power Engineering (AREA)
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- Mechanical Engineering (AREA)
- Secondary Cells (AREA)
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
It includes air conditioner refrigerating circuit, power battery cooling circuit and liquid cooling plate that the present invention, which provides a kind of electric automobile power battery heat management system, method and electric car, heat management system,；Air conditioner refrigerating circuit is equipped with heat exchanger；Liquid cooling plate is equipped with battery pack；Power battery cooling circuit connects heat exchanger, and realizes heat exchange by the refrigerant on heat exchanger and air conditioner refrigerating circuit；Power battery cooling circuit is also connected with liquid cooling plate, and is cooled down by the coolant liquid on power battery cooling circuit to the battery pack on liquid cooling plate；Using above technical scheme, it can be achieved that coolant liquid both forward and reverse directions in liquid cooling plate alternately flow, to achieve the purpose that alternately to exchange heat, so that the temperature of the battery pack on liquid cooling plate tends to uniformity, heat exchange efficiency is improved.
Description
Technical field
The invention belongs to battery car technical field of battery management, and in particular to a kind of electric automobile power battery heat management
System, method and electric car.
Background technique
Increasingly developed with social economy, energy demand further increases, and the cry of new energy technology is higher and higher, hair
Opening up electric car has been trend of the times.Core of the battery as electric car, the performance and used life of battery are directly determined
The performance and cost of electric car are determined.
Lithium-ion-power cell because the service life is long, self-discharge rate is low, specific power is high, energy density is big and it is pollution-free the advantages that,
As electric vehicle master power battery to be used.But there is an Optimal Temperature section in lithium-ion electric tank discharge, when
When battery temperature is too high or too low, beyond its permission operating temperature range, it will lead to discharge capability and sharply decline, or even do not permit
Perhaps it discharges.In actual discharge process, since accumulation of heat causes battery temperature constantly to rise, in order to guarantee the normal of battery
Work, needs to take auxiliary temperature-reducing measure.
As shown in Figure 1, in the prior art, a set of liquid cooling plate, liquid cooling is arranged in the mould group bottom usually in battery system
Plate and circulating pump, pipeline, heat exchanger form a set of circulatory system.When high-temperature battery needs cooling, the heat of battery is followed
The anti-icing fluid of ring takes in heat exchanger, then is cooled down in a heat exchanger to coolant liquid by the refrigerant of air-conditioning system.
Above scheme, due to being arranged runner in liquid cooling plate, circulating pump driving coolant liquid flows in runner, and coolant liquid is from stream
The entrance in road flows into, and constantly carries out heat with runner wall surface in runner and exchanges, and takes away battery and is conducted through the heat come, thus warm
Degree constantly increases, 5 ~ 10 DEG C higher than inlet temperature when reaching runner exit.The temperature change of coolant liquid, with battery pack everywhere
Heat exchange also change, cause the temperature of battery also unbalanced.Single battery in battery pack passes through series-parallel form, composition
Battery pack uses；Due to unbalanced Temperature Distribution between each single battery, to not cause performance between single battery not
Match, and with the increase of battery size, internal nonuniformity is more prominent.
Based on technical problem present in above-mentioned electric automobile power battery radiation processes, there has been no relevant solution party
Case；Therefore there is an urgent need to seek effective scheme to solve the above problems.
Summary of the invention
The purpose of the present invention is shortcomings present in view of the above technology, propose a kind of electric automobile power battery heat
Management system, method and electric car, it is intended to solve the problems, such as existing electric automobile power battery heat dissipation.
The present invention provides a kind of electric automobile power battery heat management system, including air conditioner refrigerating circuit, power battery are cold
But circuit and liquid cooling plate；Air conditioner refrigerating circuit is equipped with heat exchanger；Liquid cooling plate is equipped with battery pack；Power battery cooling circuit
Heat exchanger is connected, and heat exchange is realized by the refrigerant on heat exchanger and air conditioner refrigerating circuit；Power battery cooling circuit is also
Liquid cooling plate is connected, and the battery pack on liquid cooling plate is cooled down by the coolant liquid on power battery cooling circuit.
Further, power battery cooling circuit is equipped with the first branch and second branch；First branch one end passes through the
One reversal valve is connected to the liquid outlet end of power battery cooling circuit, and the first branch other end is connected to the liquid outlet end of liquid cooling plate；The
Two branch one end are connected to the inlet end of power battery cooling circuit by the second reversal valve, and the second branch other end is connected to liquid cooling
The inlet end of plate.
Further, power battery cooling circuit is equipped with the first branch and second branch；The connection of first branch one end is dynamic
The liquid outlet end of power battery cooling circuit, the first branch other end are connected to the liquid outlet end of liquid cooling plate by the first reversal valve, the
Two branch one end are connected to the inlet end of power battery cooling circuit, and the second branch other end is connected to liquid cooling by the second reversal valve
The inlet end of plate；Or, being respectively equipped with electromagnet cut off valve in the first branch and second branch.
Further, the first reversal valve is three-way diverter valve, and the first reversal valve both ends are respectively communicated with power battery and cool back
Road, the first reversal valve third end are connected to the first branch；Second reversal valve is three-way diverter valve, and the second reversal valve both ends are respectively communicated with
Power battery cooling circuit, the second reversal valve third end are connected to second branch.
Further, liquid feeding expansion drum and circulating pump are additionally provided on power battery cooling circuit；Liquid feeding expansion drum and circulation
Series connection of pumps is set on power battery cooling circuit；Circulating pump can make the coolant liquid forward flow in power battery cooling circuit,
It can also make the coolant liquid reverse flow in power battery cooling circuit；Heat exchanger is chiller heat exchanger.
It further, further include connecting tube, connecting tube includes the first connecting tube and the second connecting tube；Liquid cooling plate includes more
Block；The inlet of first connecting tube is connected to the first reversal valve on power battery cooling circuit, by more in the first connecting tube
A connector is connected to the inlet of each liquid cooling plate respectively；The of the liquid outlet of second connecting tube and power battery cooling circuit
Two reversal valves are connected to, and are connected to respectively with the liquid outlet of each liquid cooling plate in the second connecting tube by multiple connectors；Every piece of liquid cooling
Plate is respectively equipped with battery pack.
Further, first branch one end is connected to by the second connecting tube of connection with the liquid outlet of liquid cooling plate；Second
Branch one end is connected to by the first connecting tube of connection with the inlet of liquid cooling plate.
Further, air conditioner refrigerating circuit includes compressor, condenser and evaporator；Compressor one end passes through refrigeration stream
Road is connect with condenser, and condenser one end connect by refrigeration circuit with evaporator, the evaporator other end pass through refrigeration circuit and
Compressor connection, to form refrigeration cycle；It further include heat-exchanging loop, heat-exchanging loop one end is connect with condenser, heat exchange
The circuit other end is connect with compressor, and heat exchanger is set on heat-exchanging loop.
Correspondingly, the present invention also provides a kind of electric automobile power battery thermal management algorithms, applied to electricity described above
Electrical automobile power battery thermal management system；Further include following procedure:
Starting electric automobile power battery heat management system cools down power battery；
When being powered on to the first reversal valve on power battery cooling circuit, liquid outlet of the coolant liquid from power battery cooling circuit
Into liquid cooling plate, so that heat absorption cooling is carried out to the battery pack on liquid cooling plate, liquid outlet of the coolant liquid after heat absorption from liquid cooling plate
Into the inlet of power battery cooling circuit, so that returning to heat exchanger carries out cooling heat transferring；
When the first reversal valve power down given on power battery cooling circuit, liquid outlet of the coolant liquid from power battery cooling circuit
Enter the liquid outlet of liquid cooling plate by the first branch, so that reversed heat absorption cooling is carried out to the battery pack on liquid cooling plate, after heat absorption
Coolant liquid enter the feed liquor of power battery cooling circuit by the second reversal valve by second branch from the inlet of liquid cooling plate
Mouthful, so that returning to heat exchanger carries out cooling heat transferring.
Correspondingly, the present invention also provides a kind of electric car, including power battery thermal management system, the power battery heat
Management system is electric automobile power battery heat management system described above.
Using above technical scheme, it can be achieved that coolant liquid both forward and reverse directions in liquid cooling plate alternately flow, to reach alternating
The purpose of heat exchange.In liquid cooling plate, rise since coolant liquid absorbs thermal temperature in flowing, the battery temperature of upstream will be lower than
The battery in downstream, in this way when change coolant liquid flows to, the battery pack that cold coolant liquid becomes first high with temperature exchanges heat, and adds
Battery pack low with temperature again exchanges heat after hot, and the temperature of battery pack tends to uniformity, improves heat exchange efficiency.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Below with reference to attached drawing, the invention will be further described:
Fig. 1 is a kind of electric automobile power battery heat management system schematic diagram in the prior art；
Fig. 2 is a kind of electric automobile power battery heat management system schematic diagram of the present invention；
Fig. 3 is liquid cooling plate structural schematic diagram of the present invention.
In figure: 10, compressor；20, condenser；30, evaporator；40, heat exchanger；50, battery pack；60, liquid feeding expansion drum；
70, circulating pump；1, compressor；2, condenser；3, evaporator；4, heat exchanger；5, battery pack；51, liquid cooling plate；52, the first connection
Pipe；53, inlet；54, liquid outlet；55, the second connecting tube；56, connector；6, liquid feeding expansion drum；7, circulating pump；8, it first changes
To valve；9, the second reversal valve.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The present invention will be described in detail below with reference to the accompanying drawings and embodiments.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include at least one this feature.In the description of the present invention, the meaning of " plurality " is at least two, such as two, three
It is a etc., unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected or can communicate each other；It can be directly connected, can also indirectly connected through an intermediary, it can be with
It is the interaction relationship of the connection or two elements inside two elements, unless otherwise restricted clearly.For this field
For those of ordinary skill, the specific meanings of the above terms in the present invention can be understood according to specific conditions.
As shown in Figure 1 to Figure 3, the present invention provides a kind of electric automobile power battery heat management system, including air conditioner refrigerating
Circuit, power battery cooling circuit and liquid cooling plate 51；The air conditioner refrigerating circuit is the automatic air conditioner refrigerating circuit of electric car；
Wherein, air conditioner refrigerating circuit is equipped with heat exchanger 4；Liquid cooling plate 51 is equipped with battery pack 5；The connection heat exchange of power battery cooling circuit
Device 4, and heat exchange is realized by the refrigerant on heat exchanger 4 and air conditioner refrigerating circuit；Power battery cooling circuit is also connected with liquid
Cold plate 51, and the battery pack 5 on liquid cooling plate 51 is cooled down by the coolant liquid on power battery cooling circuit；Using above-mentioned
Scheme can effectively radiate to existing electric automobile power battery, and radiating efficiency is higher.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, power battery cooling circuit is equipped with
The first branch and second branch；Wherein, first branch one end is connected to the liquid out of power battery cooling circuit by the first reversal valve 8
Mouth end, liquid outlet end, that is, battery cooling circuit of battery cooling circuit is connected to 51 one end of liquid cooling plate, lower for providing temperature
Coolant liquid；The first branch other end is connected to the liquid outlet end of liquid cooling plate 51, liquid outlet end, that is, stoste cold plate of the liquid cooling plate 51
The one end flowed out after coolant liquid absorbing and cooling temperature in 51；Second branch one end is connected to power battery by the second reversal valve 9 and cools back
Inlet end, that is, battery the cooling circuit at the inlet end on road, battery cooling circuit is connected to 4 one end of heat exchanger, for after exchanging heat
The higher coolant liquid of temperature be delivered to heat exchanger 4 to carry out heat release cooling；The inlet of second branch other end connection liquid cooling plate
It holds, the coolant liquid in inlet end, that is, primary battery cooling circuit of liquid cooling plate enters one end of liquid cooling plate from the inlet；Specifically
Ground, the first reversal valve 8 may be disposed at the liquid outlet end of power battery cooling circuit, and it is cold that the second reversal valve 9 is set to power battery
But the inlet end in circuit, the first reversal valve 8 and the second reversal valve 9 are solenoid directional control valve；As shown in Fig. 2, using above-mentioned side
Case, when the first 8 power down of reversal valve, coolant liquid is flowed by double-head arrow direction, is entered from the inlet of liquid cooling plate, from liquid cooling plate
Liquid outlet outflow；When the second reversal valve 9 must be electric, coolant liquid is flowed by single arrow direction, is entered from the liquid outlet of liquid cooling plate, from
The inlet of liquid cooling plate flows out, to realize that cooling medium both forward and reverse directions in battery pack alternately flow；The heat dissipation of battery is more
Equilibrium, temperature equalization distribution between each single battery, the performance between each single battery more match.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, power battery cooling circuit is equipped with
The first branch and second branch；First branch one end is connected to the liquid outlet end of power battery cooling circuit, battery cooling circuit
Liquid outlet end, that is, battery cooling circuit is connected to 5 one end of battery pack, for providing temperature lower coolant liquid；The first branch other end
The liquid outlet end of liquid cooling plate is connected to by the first reversal valve, coolant liquid is inhaled in liquid outlet end, that is, stoste cold plate 51 of the liquid cooling plate 51
The one end flowed out after heat drop temperature；Second branch one end is connected to the inlet end of power battery cooling circuit, battery cooling circuit
Inlet end, that is, battery cooling circuit is connected to 4 one end of heat exchanger, changes for the higher coolant liquid of temperature after heat exchange to be delivered to
It is cooling that hot device 4 carries out heat release；The second branch other end by the second reversal valve be connected to liquid cooling plate inlet end, liquid cooling plate into
Coolant liquid in liquid mouth end, that is, primary battery cooling circuit enters one end of liquid cooling plate from the inlet；Specifically, the first reversal valve 8
It may be disposed at the inlet end of liquid cooling plate 51, the second reversal valve 9 is set to the liquid outlet end of liquid cooling plate 51, and the first reversal valve 8
It is solenoid directional control valve with the second reversal valve 9；Using the above scheme, when the first 8 power down of reversal valve, coolant liquid presses double-head arrow side
To flowing, enter from the inlet of liquid cooling plate, is flowed out from the liquid outlet of liquid cooling plate；When the second reversal valve 9 must be electric, coolant liquid is pressed
The flowing of single arrow direction, enters from the liquid outlet of liquid cooling plate, flows out from the inlet of liquid cooling plate, to realize cooling medium in electricity
It wraps interior both forward and reverse directions and alternately flows in pond.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, power battery cooling circuit is equipped with
The first branch and second branch；First branch one end is connected to the liquid outlet end of power battery cooling circuit, battery cooling circuit
Liquid outlet end, that is, battery cooling circuit is connected to 5 one end of battery pack, for providing temperature lower coolant liquid；The first branch other end
It is connected to the liquid outlet end of liquid cooling plate, is flowed out after coolant liquid absorbing and cooling temperature in liquid outlet end, that is, stoste cold plate 51 of the liquid cooling plate 51
One end；The first branch is equipped with electromagnet cut off valve；Second branch one end is connected to the inlet end of power battery cooling circuit, battery
The inlet end of cooling circuit, that is, battery cooling circuit is connected to 4 one end of heat exchanger, for the higher cooling of temperature after exchanging heat
Liquid is delivered to heat exchanger 4 and carries out heat release cooling；The second branch other end is connected to the inlet end of liquid cooling plate, the inlet of liquid cooling plate
Coolant liquid in end i.e. primary battery cooling circuit enters one end of liquid cooling plate from the inlet；Second branch is ended equipped with electromagnetism
Valve；Using the above scheme, when the first 8 power down of reversal valve, coolant liquid is flowed by double-head arrow direction, from the inlet of liquid cooling plate into
Enter, is flowed out from the liquid outlet of liquid cooling plate；When the second reversal valve 9 must be electric, coolant liquid is flowed by single arrow direction, from liquid cooling plate
Liquid outlet enters, and flows out from the inlet of liquid cooling plate, to realize that cooling medium both forward and reverse directions in battery pack alternately flow.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, the first reversal valve 8 is triplet commutation
Valve, the liquid outlet of one end connection power battery cooling circuit of the first reversal valve 8, the second end connection first of the first reversal valve 8
Branch, the inlet of the third end connection liquid cooling plate 51 of the first reversal valve 8；Using the above scheme, by triple valve be powered or
The switching between each flow path can be realized in power-off, to realize that cooling medium both forward and reverse directions in battery pack alternately flow；Into
One step, the second reversal valve 9 is three-way diverter valve, the feed liquor of the first end connection power battery cooling circuit of the second reversal valve 9
Mouthful, the second end of the second reversal valve 9 is connected to second branch, and the liquid outlet of the third end connection liquid cooling plate 51 of the second reversal valve 9 is adopted
With above scheme, by being powered to triple valve or powering off the switching that can be realized between each flow path, to realize cooling medium
Both forward and reverse directions alternately flow in battery pack.
Preferably, it in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, is also set on power battery cooling circuit
There are liquid feeding expansion drum 6 and circulating pump 7；Wherein, liquid feeding expansion drum 6 and circulating pump 7 are arranged in series on power battery cooling circuit,
Liquid feeding expansion drum 6 is for providing coolant liquid, and circulating pump 7 is for providing coolant liquid circulation power；Specifically, 6 He of liquid feeding expansion drum
Circulating pump 7 is arranged in series in the outlet end of power battery cooling circuit, i.e. one end after the heat exchange of heat exchanger 4；Further,
Circulating pump 7 can make the coolant liquid forward flow in power battery cooling circuit, can also make the cooling in power battery cooling circuit
Liquid reverse flow；Further, heat exchanger is chiller heat exchanger, can effectively provide heat exchange efficiency in this way；Using above-mentioned side
Case can make power battery cooling circuit by using water circulating pump rotation direction is changed in the practical radiation processes of power battery
In coolant liquid exchange flow direction according to demand, thus to the battery pack on liquid cooling plate carry out alternately heat dissipation.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, liquid cooling plate provided by the invention is also wrapped
Connecting tube is included, connecting tube includes the first connecting tube 52 and the second connecting tube 55；Liquid cooling plate 51 includes muti-piece；First connecting tube 52
Inlet 53 is connected to the first reversal valve 8 on power battery cooling circuit, passes through multiple connectors 56 in the first connecting tube 52
It is connected to respectively with the inlet of each liquid cooling plate 51, to form shunt circuit；The liquid outlet 54 and power electric of second connecting tube 55
The second reversal valve 9 connection on the cooling circuit of pond, in the second connecting tube 55 by multiple connectors 56 respectively with each liquid cooling plate
51 liquid outlet connection；It is respectively equipped with battery pack 5 on every piece of liquid cooling plate 51, for individually being cooled down.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, first branch one end passes through connection the
Two connecting tubes 55 with the liquid outlet of liquid cooling plate 51 to be connected to；Second branch one end is by the first connecting tube of connection 52 thus and liquid
The inlet of cold plate 51 is connected to, to realize that cooling medium both forward and reverse directions in battery pack alternately flow.
Preferably, in conjunction with above scheme, as shown in Figure 1 to Figure 3, in the present embodiment, air conditioner refrigerating circuit includes compressor
1, condenser 2 and evaporator 3；Wherein, 1 one end of compressor is connect by refrigeration circuit with condenser 2, and 2 one end of condenser is logical
It crosses refrigeration circuit to connect with evaporator 3,3 other end of evaporator is connected to by refrigeration circuit with compressor 1, is followed to form refrigeration
Loop back path；It specifically, further include heat-exchanging loop, heat-exchanging loop one end is connect with condenser 2, the heat-exchanging loop other end and compressor
1 connection, and heat exchanger 4 is set on heat-exchanging loop, to carry out heat exchange with the refrigerant on heat-exchanging loop.
Using the above scheme, by improving power battery cooling circuit, or change water circulating pump rotation direction, make power
Coolant liquid in battery cooling circuit exchanges flow direction according to demand, to alternately dissipate to the battery pack on liquid cooling plate
Heat；When power battery is cooled down, coolant liquid was recycled by forward direction before this, (can be according to acquisition after operation a period of time
Battery temperature, can also be by other conditions as switching condition), it is switched to recycled back operation.
Correspondingly, in conjunction with above scheme, the present invention also provides a kind of electric automobile power battery thermal management algorithms, are applied to
Electric automobile power battery heat management system described above；Further include following procedure:
When temperature of powered cell exceeds preset temperature, starting electric automobile power battery heat management system carries out power battery
It is cooling；
When powering on to the first reversal valve 8 on power battery cooling circuit, coolant liquid goes out liquid from power battery cooling circuit
Mouthful enter liquid cooling plate 51, to carry out heat absorption cooling to the battery pack 5 on liquid cooling plate 51, the coolant liquid after heat absorption is from liquid cooling plate 51
Liquid outlet enter the inlet of power battery cooling circuit, thus return to heat exchanger 4 carry out cooling heat transferring, the circulation be forward direction
Circulation；
When the first 8 power down of reversal valve given on power battery cooling circuit, coolant liquid goes out liquid from power battery cooling circuit
Mouth enters the liquid outlet of liquid cooling plate 51 by the first branch, so that cooling of reversely absorbing heat is carried out to the battery pack 5 on liquid cooling plate 51,
Coolant liquid after heat absorption is cooled back by the second reversal valve 9 into power battery from the inlet of liquid cooling plate 51 by second branch
The inlet on road, so that returning to heat exchanger 4 carries out cooling heat transferring, which is recycled back.
Preferably, in conjunction with above scheme, in the present embodiment, electric automobile power battery heat management system first carries out forward direction and follows
After between ring cooling is default, then carry out recycled back cooling.
Using the above scheme, by improving power battery cooling circuit, or change water circulating pump rotation direction, make power
Coolant liquid in battery cooling circuit exchanges flow direction according to demand, to alternately dissipate to the battery pack on liquid cooling plate
Heat；When power battery is cooled down, coolant liquid was cooled down by forward circulation before this, and running (can be according to adopting after a period of time
The battery temperature of collection, can also be by other conditions as switching condition), it is switched to recycled back operation and is cooled down.
Correspondingly, in conjunction with above scheme, the present invention also provides a kind of electric car, including power battery thermal management system,
The power battery thermal management system is electric automobile power battery heat management system described above.
Using above technical scheme, it can be achieved that coolant liquid both forward and reverse directions in liquid cooling plate alternately flow, to reach alternating
The purpose of heat exchange.In liquid cooling plate, rise since coolant liquid absorbs thermal temperature in flowing, the battery temperature of upstream will be lower than
The battery in downstream, in this way when change coolant liquid flows to, the battery pack that cold coolant liquid becomes first high with temperature exchanges heat, and adds
Battery pack low with temperature again exchanges heat after hot, and the temperature of battery pack tends to uniformity, improves heat exchange efficiency.
The above, only presently preferred embodiments of the present invention not do limitation in any form to the present invention.It is any ripe
Those skilled in the art is known, without departing from the scope of the technical proposal of the invention, all using technology contents described above
Many possible changes and modifications or equivalent example modified to equivalent change are made to technical solution of the present invention.Therefore, all
It is the content without departing from technical solution of the present invention, any change modification made to the above embodiment of technology according to the present invention,
Equivalent variations and modification belong to the protection scope of the technical program.
Claims (10)
1. a kind of electric automobile power battery heat management system, which is characterized in that cooling including air conditioner refrigerating circuit, power battery
Circuit and liquid cooling plate；The air conditioner refrigerating circuit is equipped with heat exchanger；The liquid cooling plate is equipped with battery pack；The power electric
Pond cooling circuit connects the heat exchanger, and realizes that heat is handed over by the refrigerant on the heat exchanger and the air conditioner refrigerating circuit
It changes；The power battery cooling circuit is also connected with the liquid cooling plate, and passes through the coolant liquid on the power battery cooling circuit
The battery pack on the liquid cooling plate is cooled down.
2. electric automobile power battery heat management system according to claim 1, which is characterized in that the power battery is cold
But circuit is equipped with the first branch and second branch；Described first branch one end is connected to the power battery by the first reversal valve
The liquid outlet end of cooling circuit, the first branch other end are connected to the liquid outlet end of the liquid cooling plate；The second branch one
End is connected to the inlet end of the power battery cooling circuit by the second reversal valve, described in the second branch other end is connected to
The inlet end of liquid cooling plate.
3. electric automobile power battery heat management system according to claim 1, which is characterized in that the power battery is cold
But circuit is equipped with the first branch and second branch；Described first branch one end is connected to the liquid out of the power battery cooling circuit
Mouth end, the first branch other end are connected to the liquid outlet end of the liquid cooling plate, the second branch one by the first reversal valve
End is connected to the inlet end of the power battery cooling circuit, and the second branch other end passes through described in the connection of the second reversal valve
The inlet end of liquid cooling plate；Or, being respectively equipped with electromagnet cut off valve in the first branch and the second branch.
4. electric automobile power battery heat management system according to claim 2, which is characterized in that first reversal valve
For three-way diverter valve, first reversal valve both ends are respectively communicated with the power battery cooling circuit, first reversal valve
Three ends are connected to the first branch；Second reversal valve is three-way diverter valve, and second reversal valve both ends are respectively communicated with institute
Power battery cooling circuit is stated, the second reversal valve third end is connected to the second branch.
5. electric automobile power battery heat management system according to any one of claims 1 to 4, which is characterized in that described
Liquid feeding expansion drum and circulating pump are additionally provided on power battery cooling circuit；The liquid feeding expansion drum and the circulating pump are arranged in series
In on the power battery cooling circuit；The circulating pump can make the coolant liquid forward stream in the power battery cooling circuit
It is dynamic, the coolant liquid reverse flow in the power battery cooling circuit can also be made；The heat exchanger is chiller heat exchanger.
6. electric automobile power battery heat management system according to claim 2 or 3, which is characterized in that further include connection
Pipe, the connecting tube include the first connecting tube and the second connecting tube；The liquid cooling plate includes muti-piece；First connecting tube into
Liquid mouth is connected to the first reversal valve on the power battery cooling circuit, passes through multiple connectors point in first connecting tube
It is not connected to the inlet of each liquid cooling plate；On the liquid outlet of second connecting tube and the power battery cooling circuit
The connection of the second reversal valve, connected respectively with the liquid outlet of each liquid cooling plate in second connecting tube by multiple connectors
It is logical；Every piece of liquid cooling plate is respectively equipped with battery pack.
7. electric automobile power battery heat management system according to claim 6, which is characterized in that the first branch one
End is by being connected to second connecting tube to be connected to the liquid outlet of the liquid cooling plate；Described second branch one end passes through connection
First connecting tube with the inlet of the liquid cooling plate to be connected to.
8. electric automobile power battery heat management system according to claim 1, which is characterized in that the air conditioner refrigerating returns
Road includes compressor, condenser and evaporator；Described compressor one end is connect by refrigeration circuit with the condenser, described
Condenser one end is connect by refrigeration circuit with the evaporator, and the evaporator other end passes through refrigeration circuit and the compression
Machine connection, to form refrigeration cycle；It further include heat-exchanging loop, described heat-exchanging loop one end is connect with the condenser,
The heat-exchanging loop other end is connect with the compressor, and the heat exchanger is set on the heat-exchanging loop.
9. a kind of electric automobile power battery thermal management algorithm, which is characterized in that be applied to any one of the claims 2 to 8
The electric automobile power battery heat management system；Further include following procedure:
Starting electric automobile power battery heat management system cools down power battery；
When being powered on to the first reversal valve on power battery cooling circuit, liquid outlet of the coolant liquid from power battery cooling circuit
Into liquid cooling plate, so that heat absorption cooling is carried out to the battery pack on liquid cooling plate, liquid outlet of the coolant liquid after heat absorption from liquid cooling plate
Into the inlet of power battery cooling circuit, so that returning to heat exchanger carries out cooling heat transferring；
When the first reversal valve power down given on power battery cooling circuit, liquid outlet of the coolant liquid from power battery cooling circuit
Enter the liquid outlet of liquid cooling plate by the first branch, so that reversed heat absorption cooling is carried out to the battery pack on liquid cooling plate, after heat absorption
Coolant liquid enter the feed liquor of power battery cooling circuit by the second reversal valve by second branch from the inlet of liquid cooling plate
Mouthful, so that returning to heat exchanger carries out cooling heat transferring.
10. a kind of electric car, including power battery thermal management system, which is characterized in that the power battery thermal management system
For the described in any item electric automobile power battery heat management systems of the claims 1 to 8.
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| CN201910624710.4A CN110444831A (en) | 2019-07-11 | 2019-07-11 | A kind of electric automobile power battery heat management system, method and electric car |
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| CN201910624710.4A CN110444831A (en) | 2019-07-11 | 2019-07-11 | A kind of electric automobile power battery heat management system, method and electric car |
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| CN110120566A (en) * | 2019-05-07 | 2019-08-13 | 奇瑞新能源汽车技术有限公司 | A kind of power battery cooling system for electronic vehicle and electric car |
| CN110854470A (en) * | 2019-11-27 | 2020-02-28 | 威马汽车制造温州有限公司 | Direct-cooling liquid-heating type battery thermal management system and control method for electric automobile and electric automobile |
| CN110911780A (en) * | 2019-12-11 | 2020-03-24 | 唐城琨 | Direct cooling type lithium ion battery cold plate |
| CN110957549A (en) * | 2019-12-19 | 2020-04-03 | 哈尔滨理工大学 | Battery pack fire-fighting system of electric automobile |
| CN111403848A (en) * | 2020-03-28 | 2020-07-10 | 哈尔滨工程大学 | Power battery thermal management system based on tab liquid cooling mode |
| CN111416176A (en) * | 2020-04-07 | 2020-07-14 | 奇瑞商用车（安徽）有限公司 | VCU control-based whole vehicle heat dissipation system and method |
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| CN112151912A (en) * | 2020-09-29 | 2020-12-29 | 东风汽车集团有限公司 | Cooling liquid flow direction controllable battery pack, battery pack thermal management system and control method |
| CN113370744A (en) * | 2021-05-18 | 2021-09-10 | 武汉路特斯汽车有限公司 | Integrated heat exchange system and vehicle |
| CN113506927A (en) * | 2021-05-14 | 2021-10-15 | 湘潭大学 | Electric automobile liquid cooling system with replaceable flow direction and reversing control method thereof |
| CN115411400A (en) * | 2022-09-08 | 2022-11-29 | 湖北亿纬动力有限公司 | Thermal management system and battery system |
| WO2024090036A1 (en) * | 2022-10-24 | 2024-05-02 | パナソニックオートモーティブシステムズ株式会社 | Vehicle and heat management system |
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Application publication date: 20191112 |