CN106129524B - Vehicle lithium battery temperature control system and its control method - Google Patents
Vehicle lithium battery temperature control system and its control method Download PDFInfo
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- CN106129524B CN106129524B CN201610615312.2A CN201610615312A CN106129524B CN 106129524 B CN106129524 B CN 106129524B CN 201610615312 A CN201610615312 A CN 201610615312A CN 106129524 B CN106129524 B CN 106129524B
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- fluid injection
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 title claims abstract description 37
- 229910052744 lithium Inorganic materials 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims description 10
- 239000012530 fluid Substances 0.000 claims abstract description 68
- 238000002347 injection Methods 0.000 claims abstract description 43
- 239000007924 injection Substances 0.000 claims abstract description 43
- 230000017525 heat dissipation Effects 0.000 claims abstract description 31
- 238000010438 heat treatment Methods 0.000 claims abstract description 20
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- 238000007665 sagging Methods 0.000 claims abstract description 4
- 239000007788 liquid Substances 0.000 claims description 65
- 238000001802 infusion Methods 0.000 claims description 26
- 238000009833 condensation Methods 0.000 claims description 21
- 230000005494 condensation Effects 0.000 claims description 21
- 230000009469 supplementation Effects 0.000 claims description 11
- 238000004378 air conditioning Methods 0.000 claims description 8
- 238000001816 cooling Methods 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 5
- 230000005611 electricity Effects 0.000 claims description 5
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001514 detection method Methods 0.000 claims description 3
- 238000009413 insulation Methods 0.000 claims description 3
- 239000000178 monomer Substances 0.000 claims description 3
- 239000000741 silica gel Substances 0.000 claims description 3
- 229910002027 silica gel Inorganic materials 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 2
- 230000008676 import Effects 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 230000002045 lasting effect Effects 0.000 claims 1
- 239000007787 solid Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 description 4
- 238000011161 development Methods 0.000 description 3
- 239000000243 solution Substances 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000010606 normalization Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- H01M10/62—Heating or cooling; Temperature control specially adapted for specific applications
- H01M10/625—Vehicles
-
- 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
-
- 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
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Secondary Cells (AREA)
- Arrangement Or Mounting Of Propulsion Units For Vehicles (AREA)
Abstract
Present invention is disclosed a kind of vehicle lithium battery temperature control systems to be equipped with the internal battery case for being filled with heat eliminating medium, multiple placed cavities are equipped in battery case vertically, the placed cavity is fixed on battery case bottom in line-column matrix structure, gap is all had between the placed cavity, capping is equipped at the top of the battery case, it is sagging in the capping to have more fluid injection branch pipes, the fluid injection branch pipe extends in the gap among per adjacent four placed cavities, the battery case bottom is equipped with outlet tube, it is equipped with manifold valve on the every fluid injection branch pipe and is connected to fluid injection manifold, the outlet tube connects automobile radiators input terminal by heat dissipation pump, the radiator output end connection fluid injection manifold；This system is safe and reliable, strong for lithium battery use environment controllability, can not only reliably cool down, moreover it is possible to give lithium battery heating at low ambient temperatures, ensure the work condition environment of lithium battery, improve the safety in utilization, reliability and service life of lithium battery.
Description
Technical field
The present invention relates to for lithium battery environment temperature control field.
Background technology
With the development of twentieth century microelectric technique, the equipment of miniaturization is increasing, is proposed to power supply very high
It is required that lithium battery enters the large-scale practical stage therewith.Since lithium battery amount of storage is big, Portable durable, widely used
In in various electronic products, and with the development of electric vehicle, lithium battery is also largely applied on electric vehicle, especially
Automobile energy consumption is big, and use environment differs greatly, and proposes higher requirement for the use environment of lithium battery, not only needs
It gives lithium battery under high temperature environment rationally reliably to cool down, moreover it is possible to give lithium battery heating at low ambient temperatures, allow it can
Started at a suitable temperature, however lack such a system for lithium battery environment conditioning at present, constrains lithium
Application and development of the battery in automotive field.
Invention content
The technical problem to be solved by the present invention is to realize that one kind can rationally reliably carry out lithium battery use environment
The system of regulation and control.
To achieve the goals above, the technical solution adopted by the present invention is：Vehicle lithium battery temperature control system, system are equipped with interior
Portion is filled with the battery case of heat eliminating medium, is equipped with the placed cavity of multiple hollow columnars, the placed cavity in the battery case vertically
It is fixed on battery case bottom in line-column matrix structure, gap is all had between the placed cavity, envelope is equipped at the top of the battery case
It covers, it is sagging in the capping to there are more fluid injection branch pipes, the fluid injection branch pipe to extend to the gap among per adjacent four placed cavities
Interior, the battery case is equipped with outlet tube, is equipped with manifold valve on the every fluid injection branch pipe, and fluid injection branch pipe with fluid injection manifold
Connection, the outlet tube connect automobile radiators input terminal by heat dissipation pump, and the radiator output end connects fluid injection manifold, institute
It states outlet tube and is equipped with liquid valve with battery case connecting portion, temperature sensor, the electricity are equipped in each battery cell
Pond bottom portion is fixed with heating rod protruding upward.
The battery case bottom surface is square, and the outlet tube is equipped with four, and is located at each side bottom of battery case
The same end.
Multiple battery cells, the gap placed between cavity wall and battery cell have been vertically stacked in the placed cavity
It is filled by heat conductive silica gel, is connected by the heat conduction item being vertically arranged between the adjacent placed cavity.
The placed cavity is fixed on the bottom of battery case, the bottom of the placed cavity bottom and battery case by support construction
Between have gap.
The bottom of the battery case is fixed with refrigerator pipes row, refrigerator pipes row include with automobile air conditioner compressor input,
Output end connection condensation pipe, positioned at condensation pipe lower surface thermal insulation layer and positioned at condensation pipe upper surface with condensation
Pipe wall connects and extends into heat dissipation needle or cooling fin in battery case, and the condensation pipe inlet and outlet is equipped with valve
Door.
The battery case is furnished with spare fluid infusion case and circulating pump, and heat eliminating medium is filled in the spare fluid infusion case, described
Fluid infusion case is fixed in capping, and fluid infusion bottom portion is connected to by installing in valvular liquid supplementation pipe and battery case, described to follow
Ring pumps input terminal and passes through pipeline connection battery lower box part, the fluid infusion by pipeline connection battery upper box part, cycle pump output terminal
It is equipped with valve on the pipeline of pipe and circulating pump.
Vehicle lithium battery temperature control system is equipped with controller, and the controller receives the level sensing in battery case and fluid infusion case
The signal of the signal of device and each temperature sensor, outputs control signals to manifold valve, heat dissipation pump, liquid valve, heating
Valve in stick driving unit, circulating pump, air conditioning for automobiles control unit and liquid supplementation pipe and circulating pump pipeline.
Control method based on the vehicle lithium battery temperature control system：
Step 1, system electrification start, and acquire liquid level information in battery case；
If the battery case level value currently acquired and the battery case liquid level value difference stored when last system cut-off are more than etc.
In setting difference, or the battery case level value currently acquired is less than or equal to the safety levels value set, then alarm does not allow for
Battery in outside battery case is powered outward, if the battery case level value currently acquired and the liquid stored when last system cut-off
Place value difference is less than setting difference, and the battery case level value currently acquired is more than the safety levels value of setting, then executes next step
Detection；
Temperature information in step 2, acquisition battery case；
If Current Temperatures are less than start-up temperature, closed after promoting battery the temperature inside the box to start-up temperature by heating device
Heating device, and execute next step；If Current Temperatures are higher than start-up temperature, execute and detect in next step；
Liquid level information in step 3, acquisition fluid infusion case；
If liquid level is less than or equal to setting value in current fluid infusion case, 7 are thened follow the steps, and continue to alarm, if current fluid infusion case
Interior liquid level is greater than the set value, then executes next step；
Step 4, system acquire battery the temperature inside the box and liquid level information in real time；
If Current Temperatures open manifold valve, heat dissipation pump and liquid valve higher than the temperature upper limit of setting；If Current Temperatures are low
It is limited at a temperature of setting, then closes manifold valve, heat dissipation pump and liquid valve；The temperature upper limit is more than lowest temperature；
If present battery case level value is less than the safety levels value of setting, persistently alarms and execute step 6；
Step 5 manually closes system, records level value in present battery case, and close manifold valve, heat dissipation pump and go out liquid
Valve, or keep manifold valve, heat dissipation pump and liquid valve closed state, terminate；
Step 6 closes manifold valve, heat dissipation pump and liquid valve, and it is big to present battery case level value to open valve in liquid supplementation pipe
In the safety levels value of setting；
Step 7, system acquire liquid level information and temperature information in battery case in real time；
If present battery case level value less than the safety levels value set, persistently alarmed and after the delay adjustments time,
Stop battery case powering outward, terminate；
If Current Temperatures higher than setting temperature upper limit, open air conditioning for automobiles, condensation pipe inlet and outlet valve,
And the valve in open the circulation pump and circulating pump pipeline；
Step 8 manually closes system, records level value in present battery case, and closing automobile air-conditioning, condensation pipe import
With the valve on the valve and circulating pump and circulating pump pipeline of outlet, terminate.
In step 4 method, after opening manifold valve, heat dissipation pump and liquid valve, four placed cavities around each fluid injection branch pipe
The temperature sensor of interior all battery cells is as a temperature sensing group, the average value of each temperature sensing group institute collecting temperature
Compared with the average value of all temperature sensors, if the temperature that temperature sensing group is acquired is equal to average value, visited with the temperature
The branch pipe valve opening of fluid injection branch pipe corresponding to survey group is 50%, if the temperature that temperature sensing group is acquired is higher than average value,
It is more than 50% with the branch pipe valve opening of the fluid injection branch pipe corresponding to the temperature sensing group, and the bigger aperture of difference is bigger, if temperature
The temperature subaverage that detection group is acquired, then the branch pipe valve opening with the fluid injection branch pipe corresponding to the temperature sensing group be less than
50%, and the bigger aperture of difference is smaller.
This system is safe and reliable, strong for lithium battery use environment controllability, can not only reliably cool down, moreover it is possible to
Lithium battery heating is given at low ambient temperatures, is ensured the work condition environment of lithium battery, is improved safety in utilization, the reliability of lithium battery
And service life.
Description of the drawings
The content of every width attached drawing expression in description of the invention and the label in figure are briefly described below：
Fig. 1,2 are vehicle lithium battery temperature control system structural schematic diagram；
Label in above-mentioned figure is：1, battery case；2, it covers；3, placed cavity；4, battery cell；5, fluid injection branch pipe；6、
Fluid injection manifold；7, outlet tube；8, temperature sensor；9, heating rod.
Specific implementation mode
Vehicle lithium battery temperature control system is that lithium battery is placed in a liquid, is cooled down to lithium battery by liquid circulation,
And be allowed to be maintained in a stationary temperature, as shown in Figure 1, system is equipped with the internal battery case 1 for being filled with heat eliminating medium, it is situated between
Matter is the good oily medium of heat conduction, is equipped with the placed cavity 3 of multiple hollow columnars in battery case 1 vertically, placed cavity 3 is that bottom surface is four
The column structure of side shape, inner hollow and sealing, lithium battery monomer 4, which tires out to fold one by one, to be placed in placed cavity 3, and placed cavity 3 uses
The material of good heat conductivity makes.
In order to improve space availability ratio, placed cavity 3 is fixed on 1 bottom of battery case, line-column matrix knot in line-column matrix structure
Structure, which refers to that placed cavity 3 is horizontal, is equipped with multiple row, and each column also is provided with multirow, and the spacing between ranks is identical, is tied in arrangement shown in Fig. 2
Structure, gap is all had between placed cavity 3, and gap is flowed for heat eliminating medium.
To improve thermal conduction effect, the gap between 3 inner wall of placed cavity and battery cell 4 is filled by heat conductive silica gel, from
And ensure high heat transfer between lithium cells and placed cavity 3, the heat conduction item between adjacent placed cavity 3 by being vertically arranged
Connection, placed cavity 3 are fixed on the bottom of battery case 1 by support construction, had between 3 bottom of placed cavity and the bottom of battery case 1
There is gap.Heat conduction item and support construction can ensure that the stabilization of 3 structure of placed cavity, mutual connection can reduce vehicle and add
The influence of speed and braking to placed cavity 3, avoids 3 deformation of placed cavity from even leaking, while the support for passing through support construction so that dissipates
Thermal medium can be flowed through from 3 bottom of placed cavity, improve flowing and heat dissipation effect, in addition, heat conduction item can also increase placed cavity 3 and dissipate
Contact area between thermal medium improves heat exchange efficiency.
The top of battery case 1 is equipped with capping 2, sagging in capping 2 to have more fluid injection branch pipes 5, fluid injection branch pipe 5 to extend to per adjacent
In gap among four placed cavities 3, as shown in Fig. 2, being in the center clearance per square between four placed cavities 3 of arrangement
It is equipped with a fluid injection branch pipe 5, since placed cavity 3 is arranged in line-column matrix structure, then it is in row to cover the fluid injection branch pipe 5 on 2 also
Column matrix structure is arranged.Fluid injection branch pipe 5 is fixed in capping 2, installation had both been facilitated, it also can be to the placed cavity 3 of different zones
Temperature targetedly cools down, in addition, fluid injection branch pipe 5 is vertically arranged, heat eliminating medium is to flow downward when injecting, and can utilize liquid
The gravity of body itself increases injection flow velocity, interior media flowing velocity is improved, to improve heat exchange efficiency.
It is equipped with manifold valve on every fluid injection branch pipe 5, the flow of every fluid injection branch pipe 5, outlet tube 7 and battery can be controlled
1 connecting portion of case is equipped with liquid valve, and liquid valve can control the switch of outlet tube 7, and fluid injection branch pipe 5 is connected to fluid injection manifold 6,
Outlet tube 7 connects automobile radiators input terminal by heat dissipation pump, and radiator output end connects fluid injection manifold 6, can by radiator
To cool down to heat eliminating medium.
1 bottom surface of battery case is square, and outlet tube 7 is equipped with four, and is located at the same of 1 each side bottom of battery case
End, the same end refer to the left side of side bottom end where each outlet tube 7 is respectively positioned on, or are respectively positioned on the right side of place side bottom end, i.e.,
Every outlet tube 7 is non-conterminous, and 7 fixed structure of such outlet tube coordinates 3 bottom of placed cavity to have gap with 1 bottom of battery case
Structure so that heat eliminating medium can 1 bottom of battery case formed eddy flow, coordinate the heat eliminating medium after cooling being injected downwardly into,
Media flow in battery case 1 can be made quicker, improve radiating efficiency.
It is equipped with temperature sensor 8 in each battery cell, is detected by the temperature to each battery cell so that
It monitors relatively reliable, if temperature anomaly occurs in some battery cell, alarm can be carried out, be convenient for changing the electricity of damage
Pond monomer, and enable to temperature acquisition more accurate by equally distributed temperature sensor 8.1 bottom of battery case is fixed
Have a heating rod 9 protruding upward, heating rod 9 is equipped with multiple, and is evenly distributed between placed cavity 3, heating rod 9 not with placed cavity
3 contacts, make heating rod 9 only be heated to heat eliminating medium, avoid directly causing local temperature excessively high battery heating, but uniform
Medium is heated, suitable environment temperature is improved for battery.
Since battery cooling only relies on heat eliminating medium temperature control, if leaking, danger that battery temperature may be caused excessively high
Danger, therefore system is equipped with leakage stand-by provision, battery case 1 is not in generally leakage, can be with if circulation line leaks
The circulatory system (closing manifold valve, heat dissipation pump and liquid valve) is closed, is cooled down using stand-by provision, stand-by provision is including being in battery
1 bottom of case be fixed with refrigerator pipes row, refrigerator pipes row include with automobile air conditioner compressor input, output end be connected to condensation pipe,
Positioned at condensation pipe lower surface thermal insulation layer and connect with condensation pipe tube wall positioned at condensation pipe upper surface and extend into electricity
Heat dissipation needle in pond case 1 or cooling fin, condensation pipe inlet and outlet are equipped with valve, by air-conditioning system in battery case 1
Heat eliminating medium cools down.
Battery case 1 is furnished with spare fluid infusion case and circulating pump, is filled with heat eliminating medium in spare fluid infusion case, fluid infusion case is fixed on
In capping 2, fluid infusion bottom portion is connected to by installing in valvular liquid supplementation pipe and battery case 1, and circulating pump input terminal passes through pipeline
Connect 1 top of battery case, cycle pump output terminal connects 1 lower part of battery case, the pipeline of the liquid supplementation pipe and circulating pump by pipeline
On be equipped with valve, heat eliminating medium not only can be replenished in time after the circulatory system leaks, and utilize cycle
Pump so that media flow in battery case 1 improves cooling-down effect.
In order to coordinate to work between all parts, vehicle lithium battery temperature control system is equipped with controller, and controller receives battery
The signal of the signal of liquid level sensor and each temperature sensor 8 in case 1 and fluid infusion case, controller are output control signals to
Manifold valve, heat dissipation pump, liquid valve, 9 driving unit of heating rod, circulating pump, air conditioning for automobiles control unit and liquid supplementation pipe and cycle
Valve on pump line road.
Control method based on above-mentioned vehicle lithium battery temperature control system：
Step 1, system electrification start, and acquire liquid level information in battery case 1；(after vehicle launch, before running work from
Examine work)；
If 1 level value of battery case currently acquired is more than with the 1 liquid level value difference of battery case stored when last system cut-off
Equal to setting difference, or 1 level value of battery case currently acquired is less than or equal to the safety levels value set, as long as two satisfactions
First it is alarmed does not allow for the battery in outside battery case 1 to power outward, above-mentioned two situation occurs, it may occur however that battery case
1 leakage, there are very big hidden danger, and system is closed after alarm；
If 1 level value of battery case currently acquired and the liquid level value difference stored when last system cut-off are poor less than setting
Value, and 1 level value of battery case currently acquired is more than the safety levels value of setting, then executes and detect in next step；
Temperature information in step 2, acquisition battery case 1；Current temperature value can be being averaged for 8 temperature of each temperature sensor
Value；
If Current Temperatures are less than start-up temperature, are promoted in battery case 1 by heating device and closed after temperature to start-up temperature
Heating device is closed, and executes next step；If Current Temperatures are higher than start-up temperature, execute and detect in next step；
Liquid level information in step 3, acquisition fluid infusion case；
If liquid level (used fluid infusion, automobile radiators to follow less than or equal to setting value before this explanation in current fluid infusion case
There may be leakages for loop system), 7 are thened follow the steps, and continue to alarm, if liquid level is greater than the set value in current fluid infusion case, held
Row is in next step；
Step 4, system acquire temperature and liquid level information in battery case 1 in real time；This is the normalization monitoring under work condition state,
Current temperature value can be the average value of 8 temperature of each temperature sensor；
If Current Temperatures open manifold valve, heat dissipation pump and liquid valve higher than the temperature upper limit of setting；If Current Temperatures are low
It is limited at a temperature of setting, then closes manifold valve, heat dissipation pump and liquid valve；The temperature upper limit is more than lowest temperature, avoids dissipating
Heat pump is frequently opened；
If 1 level value of present battery case is less than the safety levels value of setting, persistently alarms and execute step 6；
Step 5 manually closes system (driver's power-off), records level value in present battery case 1, and close manifold valve,
Heat dissipation pump and liquid valve, or keep manifold valve, heat dissipation pump and liquid valve closed state, terminate (not still further below execute)；
Step 6 closes manifold valve, heat dissipation pump and liquid valve, and it is big to 1 level value of present battery case to open valve in liquid supplementation pipe
In the safety levels value of setting；
Step 7, system acquire liquid level information and temperature information in battery case 1 in real time；Current temperature value can be each temperature
Spend the average value of 8 temperature of sensor
If 1 level value of present battery case is less than the safety levels value of setting, illustrates that battery case 1 has leakage, then continue
It alarms and after the delay adjustments time, stops battery case 1 and power outward, delay time is to allow driver by vehicle parking in safety
Position, terminates and (does not execute still further below)；
If Current Temperatures higher than setting temperature upper limit, open air conditioning for automobiles, condensation pipe inlet and outlet valve,
And the valve in open the circulation pump and circulating pump pipeline；
Step 8 manually closes system (driver's power-off), records level value in present battery case 1, and closing automobile is empty
Tune, the valve of condensation pipe inlet and outlet and the valve on circulating pump and circulating pump pipeline terminate.
For step 4, in order to further increase cooling-down effect, in step 4 method, opens manifold valve, heat dissipation pump and go out liquid
After valve, the temperature sensor of all battery cells is as a temperature sensing in four placed cavities around each fluid injection branch pipe
Group, the average value of each temperature sensing group institute collecting temperature is compared with the average value of all temperature sensors, if temperature sensing group
The temperature acquired is equal to average value, then is 50% with the branch pipe valve opening of the fluid injection branch pipe corresponding to the temperature sensing group, if
The temperature that temperature sensing group is acquired be higher than average value, then with the branch pipe valve opening of the fluid injection branch pipe corresponding to the temperature sensing group
More than 50%, and the bigger aperture of difference is bigger, if the temperature subaverage that temperature sensing group is acquired, with the temperature sensing
The branch pipe valve opening of the corresponding fluid injection branch pipe of group is less than 50%, and the bigger aperture of difference is smaller, can be after reasonable distribution cooling
Heat eliminating medium flow distribution, keep heat dissipation intelligent.
The present invention is exemplarily described above in conjunction with attached drawing, it is clear that the present invention implements not by aforesaid way
Limitation, as long as the improvement of the various unsubstantialities of inventive concept and technical scheme of the present invention progress is used, or without changing
Other occasions are directly applied to by the design of the present invention and technical solution, within protection scope of the present invention.
Claims (5)
1. vehicle lithium battery temperature control system, it is characterised in that：System is equipped with the internal battery case for being filled with heat eliminating medium, the electricity
The placed cavity that multiple hollow columnars are used for placing battery monomer is equipped in the case of pond vertically, the placed cavity is solid in line-column matrix structure
It is scheduled on battery case bottom, gap is all had between the placed cavity, is equipped with and covers at the top of the battery case, it is sagging in the capping
There are more fluid injection branch pipes, the fluid injection branch pipe to extend in the gap among per adjacent four placed cavities, the battery case is equipped with
Outlet tube is equipped with manifold valve on the every fluid injection branch pipe, and fluid injection branch pipe is connected to fluid injection manifold, and the outlet tube is logical
Heat dissipation pump connection automobile radiators input terminal is crossed, the radiator output end connects fluid injection manifold, the outlet tube and battery case
Connecting portion is equipped with liquid valve, and temperature sensor is equipped in each battery cell, and the battery case bottom is fixed oriented
The heating rod protruded above;
Multiple battery cells are vertically stacked in the placed cavity, the gap placed between cavity wall and battery cell passes through
Heat conductive silica gel is filled, and is connected by the heat conduction item being vertically arranged between the adjacent placed cavity;
The placed cavity is fixed on the bottom of battery case by support construction, between the placed cavity bottom and the bottom of battery case
With gap;
The bottom of the battery case is fixed with refrigerator pipes row, and the refrigerator pipes row includes and automobile air conditioner compressor input, output
Hold the condensation pipe of connection, positioned at the thermal insulation layer of condensation pipe lower surface and positioned at condensation pipe upper surface and condensation pipe
Tube wall connects and extends into heat dissipation needle or cooling fin in battery case, and the condensation pipe inlet and outlet is equipped with valve.
2. vehicle lithium battery temperature control system according to claim 1, it is characterised in that：The battery case is furnished with spare fluid infusion
Case and circulating pump, the spare fluid infusion case is interior to be filled with heat eliminating medium, and the fluid infusion case is fixed in capping, the fluid infusion bottom
Portion is connected to by installing in valvular liquid supplementation pipe and battery case, and the circulating pump input terminal is connected by pipeline on battery case
Portion, cycle pump output terminal connect battery lower box part by pipeline, and valve is equipped on the pipeline of the liquid supplementation pipe and circulating pump.
3. vehicle lithium battery temperature control system according to claim 2, it is characterised in that：Vehicle lithium battery temperature control system is equipped with
Controller, the controller receive the signal of liquid level sensor and each temperature sensor in battery case and fluid infusion case
Signal, the controller outputs control signals to manifold valve, heat dissipation pump, liquid valve, heating rod driving unit, circulating pump, vapour
Valve on vehicle conditioning control unit and liquid supplementation pipe and circulating pump pipeline.
4. the control method based on the vehicle lithium battery temperature control system of claim 1,2 or 3, it is characterised in that：
Step 1, system electrification start, and acquire liquid level information in battery case；
It is set if the battery case level value currently acquired is more than or equal to the battery case liquid level value difference stored when last system cut-off
Determine difference, or the battery case level value currently acquired is less than or equal to the safety levels value of setting, then alarm does not allow for outward
Battery in battery case is powered outward, if the battery case level value currently acquired and the level value stored when last system cut-off
Difference is less than setting difference, and the battery case level value currently acquired is more than the safety levels value of setting, then executes and detect in next step；
Temperature information in step 2, acquisition battery case；
If Current Temperatures are less than start-up temperature, heating is closed after promoting battery the temperature inside the box to start-up temperature by heating device
Device, and execute next step；If Current Temperatures are higher than start-up temperature, execute and detect in next step；
Liquid level information in step 3, acquisition fluid infusion case；
If liquid level is less than or equal to setting value in current fluid infusion case, 7 are thened follow the steps, and continue to alarm, if liquid in current fluid infusion case
Position is greater than the set value, then executes next step；
Step 4, system acquire battery the temperature inside the box and liquid level information in real time；
If Current Temperatures open manifold valve, heat dissipation pump and liquid valve higher than the temperature upper limit of setting；It is set if Current Temperatures are less than
It is limited at fixed temperature, then closes manifold valve, heat dissipation pump and liquid valve；The temperature upper limit is more than lowest temperature；
If present battery case level value is less than the safety levels value of setting, persistently alarms and execute step 6；
Step 5 manually closes system, records level value in present battery case, and close manifold valve, heat dissipation pump and liquid valve, or
The closed state of holding manifold valve, heat dissipation pump and liquid valve, terminates；
Step 6 closes manifold valve, heat dissipation pump and liquid valve, opens valve in liquid supplementation pipe and is more than to present battery case level value and sets
Fixed safety levels value；
Step 7, system acquire liquid level information and temperature information in battery case in real time；
If present battery case level value is less than the safety levels value of setting, lasting alarm simultaneously stops electricity after the delay adjustments time
Pond case is powered outward, is terminated；
If temperature upper limit of the Current Temperatures higher than setting, open air conditioning for automobiles, condensation pipe inlet and outlet valve, and open
Open the valve on circulating pump and circulating pump pipeline；
Step 8 manually closes system, records level value in present battery case, and closing automobile air-conditioning, condensation pipe import and goes out
The valve and the valve on circulating pump and circulating pump pipeline of mouth, terminate.
5. control method according to claim 4, it is characterised in that：
In step 4 method, after opening manifold valve, heat dissipation pump and liquid valve, institute in four placed cavities around each fluid injection branch pipe
There is the temperature sensor of battery cell as a temperature sensing group, the average value of each temperature sensing group institute collecting temperature and institute
There is the average value of temperature sensor to compare, if the temperature that temperature sensing group is acquired is equal to average value, with the temperature sensing group
The branch pipe valve opening of corresponding fluid injection branch pipe is 50%, if the temperature that temperature sensing group is acquired is higher than average value, with the temperature
The branch pipe valve opening for spending the fluid injection branch pipe corresponding to detection group is more than 50%, and the bigger aperture of difference is bigger, if temperature sensing group institute
The temperature subaverage of acquisition is then less than 50% with the branch pipe valve opening of the fluid injection branch pipe corresponding to the temperature sensing group, and poor
The bigger aperture of value is smaller.
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Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101577353A (en) * | 2009-05-07 | 2009-11-11 | 联合汽车电子有限公司 | Automobile battery thermal management system and working method thereof |
| CN102301511A (en) * | 2009-01-28 | 2011-12-28 | 锂电池科技有限公司 | Battery having a housing partially filled with cooling fluid |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102301511A (en) * | 2009-01-28 | 2011-12-28 | 锂电池科技有限公司 | Battery having a housing partially filled with cooling fluid |
| CN101577353A (en) * | 2009-05-07 | 2009-11-11 | 联合汽车电子有限公司 | Automobile battery thermal management system and working method thereof |
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