CN107317065A - A kind of power battery thermal management system and its control method based on TEC - Google Patents
A kind of power battery thermal management system and its control method based on TEC Download PDFInfo
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- CN107317065A CN107317065A CN201710486528.8A CN201710486528A CN107317065A CN 107317065 A CN107317065 A CN 107317065A CN 201710486528 A CN201710486528 A CN 201710486528A CN 107317065 A CN107317065 A CN 107317065A
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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
-
- 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
-
- 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
- B60L58/27—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 heating
-
- 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
- H01M10/615—Heating or keeping warm
-
- 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
- H01M10/617—Types of temperature control for achieving uniformity or desired distribution of temperature
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/60—Heating or cooling; Temperature control
- H01M10/63—Control systems
- H01M10/635—Control systems based on ambient temperature
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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
- H01M10/653—Means for temperature control structurally associated with the cells characterised by electrically insulating or thermally conductive materials
-
- 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
- H01M10/657—Means for temperature control structurally associated with the cells by electric or electromagnetic means
- H01M10/6572—Peltier elements or thermoelectric devices
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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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- 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
- Y02T10/72—Electric energy management in electromobility
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Abstract
A kind of power battery thermal management system based on TEC, including electrokinetic cell bag, with the one-to-one TEC assemblies of electrokinetic cell bag, controller, controller includes the battery temperature acquisition module being sequentially connected, BMS modules, switch element drive module, the input of battery temperature acquisition module is connected with the temperature sensor in electrokinetic cell bag, the output end of switch element drive module is connected by DC/DC converters with TEC assemblies, output control, which is instructed, after control method is handled the temperature of powered cell signal from temperature collect module including BMS modules gives switch element drive module, if temperature of powered cell is not in the range of its desired operating temperatures, switch element drive module driving TEC assemblies carry out refrigeration radiating or heating temperature actuated, if temperature of powered cell is in the range of its desired operating temperatures, TEC assemblies are then without temperature actuated.The design not only simplify control, and improve the operating efficiency of system.
Description
Technical field
The invention belongs to electric automobile technical field of temperature control, and in particular to a kind of electrokinetic cell heat pipe based on TEC
Reason system and its control method, it is adaptable to simplify control, the operating efficiency for improving system.
Background technology
The major function of electric automobile power battery heat management system includes：It is carried out effectively when battery temperature is higher
Radiating, prevents battery thermal runaway；Preheated when battery temperature is relatively low, battery is heated up, it is ensured that the charging of battery under low temperature,
Discharge performance and security；Reduce the temperature difference in battery pack, prevent the battery life at high temperature location from decaying too fast, to carry
Rise battery pack bulk life time.
According to the difference of heat transfer medium, the electrokinetic cell heat management type of cooling mainly has：1) natural heat dissipation；2) wind is forced
It is cold；3) liquid is cold；4) it is direct-cooled；5) phase-change material.Current electric automobile power battery thermal management technology it is main with air hot pipe reason and
Based on liquid heat management, phase-change material thermal management technology is also in the exploratory experiment stage of small range at present.
Cooling System in air hot pipe reason system is influenced by ambient temperature big, and can only be suitable in outdoor temperature
In the case of electrokinetic cell is radiated, it is impossible to realization is preheated in cold snap to electrokinetic cell, therefore uses scope
It is limited.Needed using the air hot pipe reason system of mounted air conditioner system integrated, it is necessary to arrange refrigeration with the progress of whole-vehicle air-conditioner system
Agent pipeline and cooling water pipeline, and also need to design air channel, Homogeneouslly-radiating, air-conditioning list are carried out to electrokinetic cell using cold air
Member needs to occupy very big space；Therefore the cold and hot management system space-consuming of air-conditioner wind is big, and specific volume energy density is small, herein
Specific volume energy density refers to battery gross energy and the ratio (kWh/m of volume3).Meanwhile, air hot pipe reason system is also present
The shortcoming that battery case internal temperature uniformity is not easily controlled, battery case Seal Design difficult, dustproof and waterproof effect is poor.Liquid
Heat management system design is complicated, needs also exist for arranging the cold pipeline of liquid, pipe arrangement is complicated, and cost is high；And also need to increase water
Pump and water tank, water tank space-consuming are larger.And the usual ratio of viscosities of iknsulating liquid that direct contact type liquid heat management system is used
Larger, flow velocity is not high, so as to limit its heat transfer effect；Though and the liquid medium that indirect contact liquid heat management system is used
The high still poor insulativity of right thermal conductivity, once will in the dead of night occur the risk of short circuit.
Chinese patent：Application publication number is CN104134831A, and data of publication of application is the patent of invention on November 5th, 2014
A kind of temperature control equipment of battery bag cascaded based on TEC, method and system are disclosed, its charge and discharge by calculating battery bag
Electric cycle-index, is then determined when the actual capacity of battery bag is equal with nominal capacity according to the charge and discharge cycles number of times of battery bag
When battery bag optimum working temperature, the optimum working temperature is optimal objective temperature, is achieved in that first by primary TEC
Environment temperature in control cabinet body is reached comprising within the temperature range of the optimal objective temperature, to reduce control battery bag temperature institute
The temperature range to be adjusted, the temperature for then further controlling battery bag by secondary TEC is optimal target temperature.Although should
The temperature of battery bag is accurately controlled in optimal objective temperature, but temperature and electric current of its control process based on battery by system, and
Controlled using secondary TEC, therefore control is complicated.
The content of the invention
The purpose of the present invention is that the problem of control for overcoming prior art to exist is complicated is simply based on there is provided one kind control
TEC power battery thermal management system and its control method.
To realize object above, technical scheme is as follows：
A kind of power battery thermal management system based on TEC, including multiple electrokinetic cell bags, with a pair of electrokinetic cell bag 1
The sensor for detecting temperature of powered cell, the sensing are provided with TEC assemblies, the controller answered, the electrokinetic cell bag
The output end of device is connected with the input of controller, and the output end of controller is connected with TEC assemblies；
The controller includes the battery temperature acquisition module being sequentially connected, BMS modules, switch element drive module, institute
The input for stating battery temperature acquisition module is connected with sensor, and the output end of the switch element drive module passes through DC/
DC converters are connected with TEC assemblies.
The electrokinetic cell bag includes casing, the power battery module positioned at box house, and the TEC assemblies include multiple
The TEC thermal management assemblies being connected in series, the TEC thermal management assemblies are located between the bottom plate of casing and power battery module, and TEC
Thermal management assemblies are powered by power battery module.
Uniformly offer multiple through holes on the bottom plate, the TEC thermal management assemblies include by its side to opposite side according to
Temperature-uniforming plate, TEC, the radiator of secondary arrangement, the border of the temperature-uniforming plate are fixedly connected with bottom plate, and the radiator prolongs via through hole
Extend the outside of casing.
It is provided between the temperature-uniforming plate and radiator between thermal insulation layer, and temperature-uniforming plate and bottom plate and is provided with sealing gasket.
Heat conduction silicone is provided between the temperature-uniforming plate and battery modules, between TEC and radiator.
Radiator air passage is provided with the outside of the bottom plate, the entrance of the radiator air passage, outlet are located at casing respectively
Front and back ends, and the porch of radiator air passage is provided with the air blower of bottom air inlet, and the air blower is supplied by power battery module
Electricity.
The DC/DC converters are PWM type DC/DC converters.
A kind of control method of the power battery thermal management system based on TEC, comprises the following steps successively：
First, the desired operating temperatures scope T of electrokinetic cell is setL~TH, limit minimum operating temperature Tmin, the limit most senior engineer
Make temperature Tmax；
2nd, the temperature of powered cell signal detected is sent to BMS modules by temperature collect module first, and BMS modules are again
The temperature signal is handled, and output control instructs and gives switch element drive module, if the electrokinetic cell temperature detected
Degree is not in the range of its desired operating temperatures, and switch element drive module drives DC/DC converter controls according to the control instruction
TEC assemblies processed carry out refrigeration radiating or heating temperature actuated, if the temperature of powered cell detected is in its desired operating temperatures model
In enclosing, then TEC assemblies are without temperature actuated.
In step 2, if the temperature of powered cell detected is not in the range of its desired operating temperatures, switch element
Drive module drives DC/DC convertor controls TEC assemblies to carry out refrigeration radiating or heating temperature actuated according to the control instruction
Including：
1st, when temperature collect module detects temperature of powered cell t>TmaxWhen, BMS modules send high temperature and forbid instruction, and
Send control instruction and carry out refrigeration radiating to switch element drive module driving DC/DC convertor controls TEC assemblies；When temperature is adopted
Collection module detects temperature of powered cell TH<t<TmaxWhen, BMS modules release high temperature and forbid instructing and send high temperature warning instruction,
BMS modules also send control instruction and freezed to switch element drive module driving DC/DC convertor controls TEC assemblies simultaneously
Radiating；When temperature collect module detects temperature of powered cell t<THWhen, BMS modules release high temperature warning instruction；When temperature is adopted
Collection module detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped；
2nd, when temperature collect module detects temperature of powered cell TH<t<TmaxWhen, BMS modules send high temperature warning instruction,
And send control instruction and carry out refrigeration radiating to switch element drive module driving DC/DC convertor controls TEC assemblies；Work as temperature
Acquisition module detects temperature of powered cell t<THWhen, BMS modules release high temperature warning instruction；When temperature collect module is detected
Temperature of powered cell t=(TL+THDuring)/2, TEC assemblies are stopped；
3rd, when temperature collect module detects temperature of powered cell Tmin<t<TLWhen, BMS modules send low temperature warning instruction,
And send control instruction to switch element drive module driving DC/DC convertor controls TEC assemblies heated；Work as temperature acquisition
Module detects temperature of powered cell t>TLWhen, BMS modules release low temperature warning instruction；When temperature collect module detects power
Battery temperature t=(TL+THDuring)/2, TEC assemblies are stopped；
4th, when temperature collect module detects temperature of powered cell t<TminWhen, BMS modules send low temperature and forbid instruction, and
Control instruction is sent quickly to be heated to switch element drive module driving DC/DC convertor controls TEC assemblies；When temperature is adopted
Collection module detects temperature of powered cell Tmin<t<TLDEG C when, BMS modules release low temperature forbid instructing and send low temperature warning refer to
Order, is carried out while BMS modules also send control instruction to switch element drive module driving DC/DC convertor controls TEC assemblies
Heating；When temperature collect module detects temperature of powered cell t>TLWhen, BMS modules release low temperature warning instruction；When temperature is adopted
Collection module detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies are stopped；
5th, when night in winter vehicle does not work, BMS modules send control instruction and drive DC/DC to switch element drive module
Convertor controls TEC assemblies are heated, to realize the insulation of electrokinetic cell.
The step one also includes the input voltage of TEC assemblies being set to refrigeration voltage V1, heating voltage V2, quick heating
Voltage V3；
In the step 2,
When temperature collect module detects temperature of powered cell t>THWhen, the input voltage of TEC assemblies is adjusted to refrigeration
Voltage V1；
When temperature collect module detects temperature of powered cell Tmin<t<TLDEG C when, the input voltages of the TEC assemblies is adjusted
Save as heating voltage V2；
When temperature collect module detects temperature of powered cell t<TminWhen, the input voltage regulation of the TEC assemblies is fast
Fast heating voltage V3；
In step 5, the input voltage regulation of the TEC assemblies is heating voltage V2。
Compared with prior art, beneficial effects of the present invention are：
1st, controller includes the battery temperature being sequentially connected in a kind of power battery thermal management system based on TEC of the present invention
Acquisition module, BMS modules, switch element drive module, the input of battery temperature acquisition module are connected with sensor, switch
The output end of element drives module is connected by DC/DC converters with TEC assemblies, when the system is operated, first temperature acquisition
The temperature of powered cell signal detected is sent to BMS modules by module, and BMS modules are handled the temperature signal again,
And output control instructs and gives switch element drive module, if the temperature of powered cell detected is not in its desired operating temperatures scope
Interior, switch element drive module drives DC/DC convertor controls TEC assemblies to carry out refrigeration radiating or add according to the control instruction
Hot temperature actuated, if the temperature of powered cell detected is in the range of its desired operating temperatures, TEC assemblies are grasped without temperature control
Make, the design is based only upon battery temperature, without detecting battery current and using two grades of TEC controls, controlling simpler.Therefore,
Present invention control is simpler.
2nd, TEC thermal management assemblies are located at the bottom plate of casing in a kind of power battery thermal management system based on TEC of the present invention
Between power battery module, TEC thermal management assemblies are fixedly connected by temperature-uniforming plate with bottom plate, and temperature-uniforming plate and battery modules it
Between, between TEC and radiator be provided with heat conduction silicone, on the one hand the design causes battery modules by gravity-pressing in TEC
On thermal management assemblies, can effectively improve between temperature-uniforming plate and battery modules, the heat conduction efficiency between TEC and radiator, together
When, temperature-uniforming plate increases TEC thermal management assemblies and the heat exchange area of battery modules, it is achieved thereby that to the samming of battery modules
Refrigeration and heating.Therefore, the present invention not only have higher heat conduction efficiency, and realize battery modules samming refrigeration and
Heating.
3rd, a kind of control method of the power battery thermal management system based on TEC of the present invention is by setting the conjunction of electrokinetic cell
Suitable operating temperature range TL~TH, limit minimum operating temperature Tmin, limit maximum operating temperature Tmax, for different humidity provinces
Between use different control strategies, TEC assemblies carry out temperature control behaviour only when battery temperature is not in suitable operating temperature range
Make, it is not only scientific and effective, and improve the operating efficiency of whole system.Therefore, the present invention improves the work of whole system
Efficiency.
4th, a kind of control method of the power battery thermal management system based on TEC of the present invention is by the input voltage of TEC assemblies
It is set to refrigeration voltage V1, heating voltage V2, quick heating voltage V3Three gears, need from corresponding according to different temperature controls
Gear so that control is simpler effectively.Therefore, the present invention further simplifies and optimizes control.
Brief description of the drawings
Fig. 1 is electrical schematic diagram of the invention.
Fig. 2 is the structural representation of electrokinetic cell bag.
Fig. 3 is Fig. 2 A direction views.
Fig. 4 is the structural representation of casing in Fig. 2.
Fig. 5 is the structural representation of TEC thermal management assemblies in Fig. 2.
Fig. 6 is the structural representation of thermal insulation layer in Fig. 5.
Fig. 7 is control flow chart of the invention.
In figure：Electrokinetic cell bag 1, casing 11, bottom plate 111, through hole 112, power battery module 12, radiator air passage 13,
Heat conduction silicone 14, TEC assemblies 2, TEC thermal management assemblies 21, temperature-uniforming plate 211, TEC212, thermal insulation layer 213, radiator 214, control
It is device 3 processed, battery temperature acquisition module 31, BMS modules 32, switch element drive module 33, DC/DC converters 4, air blower 5, close
Packing 6.
Embodiment
The present invention is further detailed explanation with embodiment for explanation below in conjunction with the accompanying drawings.
Referring to Fig. 1 to Fig. 7, a kind of power battery thermal management system based on TEC, including multiple electrokinetic cell bags 1, with it is dynamic
It is provided with the one-to-one TEC assemblies 2 of power battery bag 1, controller 3, the electrokinetic cell bag 1 for detecting electrokinetic cell temperature
The sensor of degree, the output end of the sensor is connected with the input of controller 3, output end and the TEC assemblies 2 of controller 3
It is connected；
The controller 3 includes battery temperature acquisition module 31, BMS modules 32, the switch element driving mould being sequentially connected
Block 33, the input of the battery temperature acquisition module 31 is connected with sensor, the switch element drive module 33 it is defeated
Go out end by DC/DC converters 4 with TEC assemblies 2 to be connected.
The electrokinetic cell bag 1 includes casing 11, the power battery module 12 inside casing 1, the TEC assemblies 2
Including multiple TEC thermal management assemblies 21 being connected in series, the TEC thermal management assemblies 21 are located at the bottom plate 111 and power of casing 11
Between battery modules 12, and TEC thermal management assemblies 21 are powered by power battery module 12.
Uniformly offer multiple through holes 112 on the bottom plate 111, the TEC thermal management assemblies 21 include by its side to
Temperature-uniforming plate 211 that opposite side is sequentially arranged, TEC212, radiator 214, the border of the temperature-uniforming plate 211 is fixed with bottom plate 111 to be connected
Connect, the radiator 214 extends to the outside of casing 11 via through hole 112.
It is provided between the temperature-uniforming plate 211 and radiator 214 between thermal insulation layer 213, and temperature-uniforming plate 211 and bottom plate 111
It is provided with sealing gasket 6.
Heat conduction silicone is provided between the temperature-uniforming plate 211 and battery modules 12, between TEC212 and radiator 214
14。
The outside of the bottom plate 111 is provided with radiator air passage 13, the entrance of the radiator air passage 13, outlet difference position
The porch of the front and back ends of casing 11, and radiator air passage 13 is provided with the air blower 5 of bottom air inlet, the air blower 5 is by moving
Power battery modules 12 are powered.
The DC/DC converters 4 are PWM type DC/DC converters.
A kind of control method of the power battery thermal management system based on TEC, comprises the following steps successively：
First, the desired operating temperatures scope T of electrokinetic cell is setL~TH, limit minimum operating temperature Tmin, the limit most senior engineer
Make temperature Tmax；
2nd, the temperature of powered cell signal detected is sent to BMS modules 32, BMS moulds by temperature collect module 31 first
Block 32 is handled the temperature signal again, and output control is instructed to switch element drive module 33, if what is detected is dynamic
Power battery temperature is not in the range of its desired operating temperatures, and switch element drive module 33 drives DC/ according to the control instruction
The control TEC of DC converters 4 assemblies 2 carry out refrigeration radiating or heating temperature actuated, if the temperature of powered cell detected is closed at it
In suitable operating temperature range, then TEC assemblies are without temperature actuated.
In step 2, if the temperature of powered cell detected is not in the range of its desired operating temperatures, switch element
Drive module 33 drives DC/DC converters 4 to control TEC assemblies 2 to carry out refrigeration radiating or heating temperature control according to the control instruction
Operation includes：
1st, when temperature collect module 31 detects temperature of powered cell t>TmaxWhen, BMS modules 32 send high temperature and forbid finger
Make, and send control instruction controls the progress refrigeration of TEC assemblies 2 scattered to the driving DC/DC of switch element drive module 33 converters 4
Heat；When temperature collect module 31 detects temperature of powered cell TH<t<TmaxWhen, BMS modules 32 release high temperature and forbid instruction concurrent
Go out high temperature warning instruction, while BMS modules 32 also send control instruction drives DC/DC converters to switch element drive module 33
4 control TEC assemblies 2 carry out refrigeration radiating；When temperature collect module 31 detects temperature of powered cell t<THWhen, BMS modules 32
Release high temperature warning instruction；When temperature collect module 31 detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 stop
Work；
2nd, when temperature collect module 31 detects temperature of powered cell TH<t<TmaxWhen, BMS modules 32 send high temperature warning
Instruct, and send control instruction controls TEC assemblies 2 to be freezed to the driving DC/DC of switch element drive module 33 converters 4
Radiating；When temperature collect module 31 detects temperature of powered cell t<THWhen, BMS modules 32 release high temperature warning instruction；Work as temperature
Degree acquisition module 31 detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped；
3rd, when temperature collect module 31 detects temperature of powered cell Tmin<t<TLWhen, BMS modules 32 send low temperature warning
Instruct, and send control instruction controls TEC assemblies 2 to be heated to the driving DC/DC of switch element drive module 33 converters 4；
When temperature collect module 31 detects temperature of powered cell t>TLWhen, BMS modules 32 release low temperature warning instruction；Work as temperature acquisition
Module 31 detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped；
4th, when temperature collect module 31 detects temperature of powered cell t<TminWhen, BMS modules 32 send low temperature and forbid finger
Make, and send control instruction controls TEC assemblies 2 quickly add to the driving DC/DC of switch element drive module 33 converters 4
Heat；When temperature collect module 31 detects temperature of powered cell Tmin<t<TLDEG C when, BMS modules 32 release low temperature forbid instruction
And low temperature warning instruction is sent, become while BMS modules 32 also send control instruction to the driving of switch element drive module 33 DC/DC
The control TEC of parallel operation 4 assemblies 2 are heated；When temperature collect module 31 detects temperature of powered cell t>TLWhen, BMS modules 32
Release low temperature warning instruction；When temperature collect module detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 stop work
Make,
5th, when night in winter vehicle does not work, BMS modules 32 send control instruction and driven to switch element drive module 33
The control TEC of DC/DC converters 4 assemblies 2 are heated, to realize the insulation of electrokinetic cell.
The step one also includes the input voltage of TEC assemblies 2 being set to refrigeration voltage V1, heating voltage V2, quick heating
Voltage V3；
In the step 2,
When temperature collect module 31 detects temperature of powered cell t>THWhen, the input voltage of TEC assemblies 2 is adjusted to system
Cold voltage V1；
When temperature collect module 31 detects temperature of powered cell Tmin<t<TLDEG C when, the input voltage of the TEC assemblies 2
It is adjusted to heating voltage V2；
When temperature collect module 31 detects temperature of powered cell t<TminWhen, the input voltage regulation of the TEC assemblies 2
For quick heating voltage V3；
In step 5, the input voltage regulation of the TEC assemblies 2 is heating voltage V2。
The principle of the present invention is described as follows：
In view of the problem of control of existing system presence is complicated, assembly difficulty is big, later period maintenance is inconvenient, TEC efficiency is low,
The present invention propose it is a kind of can and meanwhile realize the radiating and heating of electrokinetic cell, work when noiseless, pollution-free, simple system
Reliably, operating efficiency is high, assemble the power battery thermal management system simple, easy to maintenance based on TEC.
Thermal insulation layer 213：The present invention sets thermal insulation layer 213 between temperature-uniforming plate 211 and radiator 214, can reduce samming
Heat exchange between plate 211 and radiator 214.
Heat conduction silicone 14：The present invention sets heat conduction silicone 14 between TEC212 and radiator 214, on the one hand can
The heat conduction efficiency between TEC212 and radiator 214 is improved, on the other hand, is made by the pressuring action of radiator 214
TEC212 possesses certain installation pressure, so as to effectively improve TEC212 operating efficiency.
Radiator air passage 13：The radiator air passage 13 that the present invention is set in the bottom of casing 11, and in radiator air passage 13
Porch configuration air blower 5, to radiator 214 carry out air blast cooling radiating, can effectively improve TEC assemblies 2 refrigeration effect
Rate and the efficiency of heating surface.
The electric control theory of the present invention is as follows：
TEC assemblies 2 of the present invention are made up of multiple TEC thermal management assemblies 21 being connected in series, and pass through electrokinetic cell
Bag 1 is powered.The cooling and warming switching of TEC assemblies 2, refrigeration work consumption and the regulation of power is heated by DC/DC converters
4 realize.DC/DC converters 4 use PWM types, and it is internally provided with switch element S1, S2, S3, S4, wherein S1 and S4
For one group, S2 and S3 are one group, are connected with S4 as S1, S2 and during S3 disconnections, and the input of TEC assemblies 2 is forward voltage, to power
Battery carries out refrigeration radiating；Connected with S3 as S2, S1 and during S4 disconnections, what TEC assemblies 2 were inputted is negative voltage, to power electric
Heated in pond.Meanwhile, by the dutycycle for changing PWM, it is possible to realize the regulation to the input voltage size of TEC assemblies 2.
Control method：
The input voltage of TEC assemblies 2 is set as refrigeration voltage V by control method of the present invention1, heating voltage V2, it is quick
Heating voltage V3Three gears.The setting principle of above-mentioned gear is as follows：
1、V1During shelves work, if environment temperature is T1, electrokinetic cell initial temperature T2, and electrokinetic cell is with nC discharge and recharges times
Battery temperature does not rise when rate works；
2、V2During shelves work, if environment temperature is T3, electrokinetic cell initial temperature T4, temperature when electrokinetic cell standing does not work
Degree does not decline；
3、V3During shelves work, if environment temperature is T3, electrokinetic cell initial temperature is T3, temperature of powered cell climbing speed
For t1℃/h。
Embodiment 1：
Referring to Fig. 1 to Fig. 7, a kind of power battery thermal management system based on TEC, including multiple electrokinetic cell bags 1, with it is dynamic
The one-to-one TEC assemblies 2 of power battery bag 1, controller 3, the electrokinetic cell bag 1 include casing 11, inside casing 1
The sensor for detecting temperature of powered cell, the control are provided with power battery module 12, the power battery module 12
Device 3 processed includes the battery temperature acquisition module 31 being sequentially connected, BMS modules 32, switch element drive module 33, the battery temperature
The input of degree acquisition module 31 is connected with sensor, and the output end of the switch element drive module 33 is become by DC/DC
Parallel operation 4 is connected with TEC assemblies 2, and the TEC assemblies 2 include multiple TEC thermal management assemblies 21 being connected in series, the TEC heat pipes
Component 21 is managed to be located between the bottom plate 111 of casing 11 and power battery module 12, and TEC thermal management assemblies 21 are by electrokinetic cell mould
Group 12 is powered, and uniformly offers multiple through holes 112 on the bottom plate 111, the TEC thermal management assemblies 21 include by its side to
Temperature-uniforming plate 211 that opposite side is sequentially arranged, TEC212, thermal insulation layer 213, radiator 214, the border and bottom of the temperature-uniforming plate 211
Plate 111 is fixedly connected, and is provided with sealing gasket 6 between temperature-uniforming plate 211 and bottom plate 111, temperature-uniforming plate 211 and battery modules 12 it
Between, between TEC212 and radiator 214 be provided with heat conduction silicone 14, the radiator 214 is extended to via through hole 112
The outside of casing 11, the outside of the bottom plate 111 is provided with radiator air passage 13, the entrance of the radiator air passage 13, outlet
It is located at the front and back ends of casing 11 respectively, and the porch of radiator air passage 13 is provided with the air blower 5 of bottom air inlet, the air blast
Machine 5 connects to form closed-loop path with power battery module 12, and the DC/DC converters 4 are PWM type DC/DC converters.
A kind of control method of the power battery thermal management system based on TEC, comprises the following steps successively：
First, the desired operating temperatures scope T of electrokinetic cell is setL~TH, limit minimum operating temperature Tmin, the limit most senior engineer
Make temperature Tmax, and the input voltage of TEC assemblies 2 is set to refrigeration voltage V1, heating voltage V2, quick heating voltage V3；
2nd, the temperature of powered cell signal detected is sent to BMS modules 32, BMS moulds by temperature collect module 31 first
Block 32 is handled the temperature signal again, and output control is instructed to switch element drive module 33, if what is detected is dynamic
Power battery temperature is not in the range of its desired operating temperatures, and switch element drive module 33 drives DC/ according to the control instruction
The control TEC of DC converters 4 assemblies 2 carry out refrigeration radiating or heating temperature actuated, if the temperature of powered cell detected is closed at it
In suitable operating temperature range, then TEC assemblies are without temperature actuated, wherein, if the temperature of powered cell detected does not exist
In the range of its desired operating temperatures, switch element drive module 33 drives DC/DC converters 4 to control according to the control instruction
TEC assemblies 2, which carry out refrigeration radiating or heating temperature actuated, to be included：
1st, when temperature collect module 31 detects temperature of powered cell t>TmaxWhen, BMS modules 32 send high temperature and forbid finger
Order, electrokinetic cell system can not work, meanwhile, BMS modules 32 send control instruction and driven to switch element drive module 33
The control of DC/DC converters 4 TEC assemblies 2 carry out refrigeration radiating, and by the input voltage regulation of TEC assemblies 2 to V1, air blower 5 opens
Open；When temperature collect module 31 detects temperature of powered cell TH<t<TmaxWhen, BMS modules 32 release high temperature and forbid instruction concurrent
Go out high temperature warning instruction, now electrokinetic cell system can work, while BMS modules 32, which also send control instruction, gives switch member
The driving of part drive module 33 DC/DC converters 4 control TEC assemblies 2 to carry out refrigeration radiating, and by the input voltage of TEC assemblies 2
Adjust to V1, air blower 5 opens；When temperature collect module 31 detects temperature of powered cell t<THWhen, BMS modules 32 release height
Temperature warning instruction；When temperature collect module 31 detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped,
Air blower 5 is closed；
2nd, when temperature collect module 31 detects temperature of powered cell TH<t<TmaxWhen, BMS modules 32 send high temperature warning
Instruction, now electrokinetic cell system can work, and be driven while BMS modules 32 send control instruction to switch element drive module 33
Dynamic DC/DC converters 4 control TEC assemblies 2 to carry out refrigeration radiating, and by the input voltage regulation of TEC assemblies 2 to V1, air blower 5
Open；When temperature collect module 31 detects temperature of powered cell t<THWhen, BMS modules 32 release high temperature warning instruction；Work as temperature
Degree acquisition module 31 detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped, and air blower 5 is closed；
3rd, when temperature collect module 31 detects temperature of powered cell Tmin<t<TLWhen, BMS modules 32 send low temperature warning
Instruction, controls TEC assemblies 2 to be added while sending control instruction to the driving DC/DC of switch element drive module 33 converters 4
Heat, and by the input voltage regulation of TEC assemblies 2 to V2, air blower 5 opens；When temperature collect module 31 detects electrokinetic cell
Temperature t>TLWhen, BMS modules 32 release low temperature warning instruction；When temperature collect module 31 detects temperature of powered cell t=(TL
+THDuring)/2, TEC assemblies 2 are stopped, and air blower 5 is closed；
4th, when temperature collect module 31 detects temperature of powered cell t<TminWhen, BMS modules 32 send low temperature and forbid finger
Order, electrokinetic cell system can not work, while BMS modules 32 send control instruction drives DC/ to switch element drive module 33
The control of DC converters 4 TEC assemblies 2 are quickly heated, and by the input voltage regulation of TEC assemblies 2 to V3, air blower 5 opens；
When temperature collect module 31 detects temperature of powered cell Tmin<t<TLDEG C when, BMS modules 32 release low temperature and forbid instruction concurrent
Go out low temperature warning instruction, now electrokinetic cell system can work, while BMS modules 32, which also send control instruction, gives switch member
The driving DC/DC of part drive module 33 converters 4 control TEC assemblies 2 to be heated, and by the input voltage regulation of TEC assemblies 2 extremely
V2, air blower 5 opens；When temperature collect module 31 detects temperature of powered cell t>TLWhen, BMS modules 32 release low temperature warning
Instruction；When temperature collect module detects temperature of powered cell t=(TL+THDuring)/2, TEC assemblies 2 are stopped, and air blower 5 is closed
Close；
5th, when night in winter vehicle does not work, BMS modules 32 send control instruction and driven to switch element drive module 33
The control of DC/DC converters 4 TEC assemblies 2 are heated, and by the input voltage regulation of TEC assemblies 2 to V2, air blower 5 do not open
Open, to realize the insulation of electrokinetic cell.
Claims (10)
1. a kind of power battery thermal management system based on TEC, including multiple electrokinetic cell bags（1）And electrokinetic cell bag（1）One
One corresponding TEC assemblies（2）, controller（3）, the electrokinetic cell bag（1）Inside it is provided with for detecting temperature of powered cell
Sensor, the output end and controller of the sensor（3）Input be connected, controller（3）Output end and TEC assemblies
（2）It is connected, it is characterised in that：
The controller（3）Including the battery temperature acquisition module being sequentially connected（31）, BMS modules（32）, switch element driving
Module（33）, the battery temperature acquisition module（31）Input be connected with sensor, the switch element drive module
（33）Output end pass through DC/DC converters（4）With TEC assemblies（2）It is connected.
2. a kind of power battery thermal management system based on TEC according to claim 1, it is characterised in that：The power
Battery bag（1）Including casing（11）, positioned at casing（1）Internal power battery module（12）, the TEC assemblies（2）Including many
The individual TEC thermal management assemblies being connected in series（21）, the TEC thermal management assemblies（21）Positioned at casing（11）Bottom plate（111）With moving
Power battery modules（12）Between, and TEC thermal management assemblies（21）By power battery module（12）Power supply.
3. a kind of power battery thermal management system based on TEC according to claim 2, it is characterised in that：The bottom plate
（111）On uniformly offer multiple through holes（112）, the TEC thermal management assemblies（21）Including by its side to opposite side successively
The temperature-uniforming plate of arrangement（211）、TEC（212）, radiator（214）, the temperature-uniforming plate（211）Border and bottom plate（111）It is fixed to connect
Connect, the radiator（214）Via through hole（112）Extend to casing（11）Outside.
4. a kind of power battery thermal management system based on TEC according to claim 3, it is characterised in that：The samming
Plate（211）With radiator（214）Between be provided with thermal insulation layer（213）, and temperature-uniforming plate（211）With bottom plate（111）Between be provided with
Sealing gasket（6）.
5. a kind of power battery thermal management system based on TEC according to claim 3 or 4, it is characterised in that：It is described equal
Warm plate（211）With battery modules（12）Between, TEC（212）With radiator（214）Between be provided with heat conduction silicone（14）.
6. a kind of power battery thermal management system based on TEC according to claim 3 or 4, it is characterised in that：The bottom
Plate（111）Outside be provided with radiator air passage（13）, the radiator air passage（13）Entrance, export respectively be located at casing
（11）Front and back ends, and radiator air passage（13）Porch be provided with the air blower of bottom air inlet（5）, the air blower（5）By
Power battery module（12）Power supply.
7. a kind of power battery thermal management system based on TEC according to any one of claim 1-3, its feature exists
In：The DC/DC converters（4）For PWM type DC/DC converters.
8. a kind of control method of the power battery thermal management system based on TEC described in claim 1, it is characterised in that：
The control method comprises the following steps successively：
First, the desired operating temperatures scope T of electrokinetic cell is setL~TH, limit minimum operating temperature Tmin, the limit highest work temperature
Spend Tmax；
2nd, temperature collect module first（31）The temperature of powered cell signal detected is sent to BMS modules（32）, BMS moulds
Block（32）The temperature signal is handled again, and output control instructs and gives switch element drive module（33）If detecting
Temperature of powered cell not in the range of its desired operating temperatures, switch element drive module（33）Driven according to the control instruction
Dynamic DC/DC converters（4）Control TEC assemblies（2）Refrigeration radiating or heating temperature actuated are carried out, if the electrokinetic cell temperature detected
Spend in the range of its desired operating temperatures, then TEC assemblies（2）Without temperature actuated.
9. a kind of control method of power battery thermal management system based on TEC according to claim 8, its feature exists
In：
In step 2, if the temperature of powered cell detected is not in the range of its desired operating temperatures, switch element driving
Module（33）DC/DC converters are driven according to the control instruction（4）Control TEC assemblies（2）Carry out refrigeration radiating or heating temperature
Control operation includes：
1st, temperature collect module is worked as（31）Detect temperature of powered cell t>TmaxWhen, BMS modules（32）Send high temperature and forbid finger
Make, and send control instruction and give switch element drive module（33）Drive DC/DC converters（4）Control TEC assemblies（2）Made
Cold radiating；Work as temperature collect module（31）Detect temperature of powered cell TH<t<TmaxWhen, BMS modules（32）High temperature is released to forbid
Instruct and send high temperature warning instruction, while BMS modules（32）Also send control instruction and give switch element drive module（33）Drive
Dynamic DC/DC converters（4）Control TEC assemblies（2）Carry out refrigeration radiating；Work as temperature collect module（31）Detect electrokinetic cell temperature
Spend t<THWhen, BMS modules（32）Release high temperature warning instruction；Work as temperature collect module（31）Detect temperature of powered cell t=(TL
+THDuring)/2, TEC assemblies（2）It is stopped；
2nd, temperature collect module is worked as（31）Detect temperature of powered cell TH<t<TmaxWhen, BMS modules（32）High temperature warning is sent to refer to
Make, and send control instruction and give switch element drive module（33）Drive DC/DC converters（4）Control TEC assemblies（2）Made
Cold radiating；Work as temperature collect module（31）Detect temperature of powered cell t<THWhen, BMS modules（32）High temperature warning is released to refer to
Order；Work as temperature collect module（31）Detect temperature of powered cell t=(TL+THDuring)/2, TEC assemblies（2）It is stopped；
3rd, temperature collect module is worked as（31）Detect temperature of powered cell Tmin<t<TLWhen, BMS modules（32）Low temperature warning is sent to refer to
Make, and send control instruction and give switch element drive module（33）Drive DC/DC converters（4）Control TEC assemblies（2）Added
Heat；Work as temperature collect module（31）Detect temperature of powered cell t>TLWhen, BMS modules（32）Release low temperature warning instruction；When
Temperature collect module（31）Detect temperature of powered cell t=(TL+THDuring)/2, TEC assemblies（2）It is stopped；
4th, temperature collect module is worked as（31）Detect temperature of powered cell t<TminWhen, BMS modules（32）Send low temperature and forbid finger
Make, and send control instruction and give switch element drive module（33）Drive DC/DC converters（4）Control TEC assemblies（2）Carry out fast
Speed heating；Work as temperature collect module（31）Detect temperature of powered cell Tmin<t<TLDEG C when, BMS modules（32）Low temperature is released to prohibit
Only instruct and send low temperature warning instruction, while BMS modules（32）Also send control instruction and give switch element drive module（33）
Drive DC/DC converters（4）Control TEC assemblies（2）Heated；Work as temperature collect module（31）Detect temperature of powered cell
t>TLWhen, BMS modules（32）Release low temperature warning instruction；When temperature collect module detects temperature of powered cell t=(TL+TH)/2
When, TEC assemblies（2）It is stopped；
5th, when night in winter vehicle does not work, BMS modules（32）Send control instruction and give switch element drive module（33）Driving
DC/DC converters（4）Control TEC assemblies（2）Heated, to realize the insulation of electrokinetic cell.
10. a kind of control method of power battery thermal management system based on TEC according to claim 9, its feature exists
In：
The step one is also included TEC assemblies（2）Input voltage be set to refrigeration voltage V1, heating voltage V2, quick heating electricity
Press V3；
In the step 2,
Work as temperature collect module（31）Detect temperature of powered cell t>THWhen, TEC assemblies（2）Input voltage be adjusted to system
Cold voltage V1；
Work as temperature collect module（31）Detect temperature of powered cell Tmin<t<TLDEG C when, the TEC assemblies（2）Input voltage
It is adjusted to heating voltage V2；
Work as temperature collect module（31）Detect temperature of powered cell t<TminWhen, the TEC assemblies（2）Input voltage regulation
For quick heating voltage V3；
In step 5, the TEC assemblies（2）Input voltage regulation be heating voltage V2。
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| CN109301368A (en) * | 2018-10-18 | 2019-02-01 | 瞿志刚 | New-energy electric vehicle battery integrated thermal management system and control method |
| CN109301390A (en) * | 2018-10-18 | 2019-02-01 | 瞿志刚 | Automobile batteries heat management system and control method with bending thermal balance heat pipe |
| CN110112500A (en) * | 2019-04-23 | 2019-08-09 | 江苏大学 | A kind of battery module device and its control method |
| CN110112500B (en) * | 2019-04-23 | 2021-08-03 | 江苏大学 | Battery module device and control method thereof |
| CN111907374A (en) * | 2020-07-23 | 2020-11-10 | 奇瑞商用车（安徽）有限公司 | Vehicle-mounted battery pack temperature adjusting system and control method thereof |
| CN117080608A (en) * | 2023-06-26 | 2023-11-17 | 中山星能创新科技有限公司 | Outdoor energy storage device suitable for low temperature environment |
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