CN106876617A - A kind of temperature automatically controlled battery case and its control method - Google Patents
A kind of temperature automatically controlled battery case and its control method Download PDFInfo
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- CN106876617A CN106876617A CN201710237559.XA CN201710237559A CN106876617A CN 106876617 A CN106876617 A CN 106876617A CN 201710237559 A CN201710237559 A CN 201710237559A CN 106876617 A CN106876617 A CN 106876617A
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- 238000000034 method Methods 0.000 title claims description 13
- 239000012782 phase change material Substances 0.000 claims abstract description 26
- 238000004146 energy storage Methods 0.000 claims abstract description 8
- 238000006243 chemical reaction Methods 0.000 claims description 39
- 238000007689 inspection Methods 0.000 claims description 6
- 241001274660 Modulus Species 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000009466 transformation Effects 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 4
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000009413 insulation Methods 0.000 description 7
- 239000002360 explosive Substances 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 238000005338 heat storage Methods 0.000 description 2
- 229910001416 lithium ion Inorganic materials 0.000 description 2
- 239000013589 supplement Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000002457 bidirectional effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000003792 electrolyte Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000002918 waste heat Substances 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
- H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
- H01M50/10—Primary casings; Jackets or wrappings
-
- 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
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/48—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte
- H01M10/486—Accumulators combined with arrangements for measuring, testing or indicating the condition of cells, e.g. the level or density of the electrolyte for measuring 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
- H01M10/61—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
- H01M10/63—Control systems
-
- 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
- H01M10/6561—Gases
-
- 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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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The present invention provides a kind of temperature automatically controlled battery case, including housing, controller, primary heater and battery pack, and battery pack is immersed in phase-change material；Controller respectively with primary heater, first temperature sensor is connected with second temperature sensor, first temperature sensor is used to obtain the atmospheric temperature of the hull outside, second temperature sensor is used to obtain the temperature of primary heater, controller gathers the magnitude of voltage of battery pack by its own, when the Temperature numerical that the first temperature sensor is detected is less than the first preset temperature range, when the magnitude of voltage that the Temperature numerical that second temperature sensor is detected is less than preset second temperature interval and is detected simultaneously by is interval more than preset first voltage, controller starts primary heater work, its heat transfer is carried out into energy storage to phase-change material.The beneficial effects of the present invention are in the case of low consumption, moreover it is possible to maintain the equilibrium of battery pack regional temperature, can be applied in the environment of 20~40 DEG C.
Description
Technical field
The present invention relates to cell art, more particularly to a kind of temperature automatically controlled battery case and its control method.
Background technology
At present, battery is widely used in electric automobile, robot, electric tool etc. needs to provide the occasion of high current, so
And, in actual use, due to the characteristic of battery, there is great association with temperature, at low temperatures, its electric discharge is defeated
Go out power and there is huge difference, so as to limit application of the battery under rigor condition；On the other hand, too low temperature is to battery
Operation safely can also produce extreme influence.
Specifically, battery especially lithium ion battery, when temperature is less than 0 degree, the electrode reaction speed meeting of lithium battery
Be decreased obviously, during electric discharge can discharge current drastically decline so that power output also declines therewith, specifically, when low temperature charges, lithium
Ion is then easy to produce crystallization to separate out, and pierces through barrier film and causes internal short-circuit.After temperature is raised, electrolyte liquid activity increases, lithium
Battery can discharge capacity can increase therewith.
Existing battery temperature control mainly has following several, and heat-exchanging component and filling phase are installed such as in battery tank shell
Become material, heat-exchanging component is used to control the temperature of battery, and phase-change material is used for energy storage, by the cooperation of heat-exchanging component and energy storage part
Use, can be by the temperature control of battery in suitable scope；Also have temperature is controlled by controller, using sensing
Device obtains environment temperature, it is compared with preset temperature adjustment, if it is not satisfied, then being adjusted to temperature by controller
Whole, until reach preset temperature value, but these schemes have a problem that, heater be trapped among battery core periphery heated or
The packaging body of filling phase-change material is trapped among battery core periphery carries out heat conduction, not only consumes energy, and heats uneven, battery heat insulating ability
Also it is poor, it is adapted to extreme weather conditions, in consideration of it, being badly in need of a kind of low consumption of exploitation, battery temperature heating
Even temperature automatically controlled battery case.
In view of drawbacks described above, creator of the present invention passes through prolonged research and practice obtains the present invention finally.
The content of the invention
To solve the above problems, the technical solution adopted by the present invention is on the one hand to provide a kind of temperature automatically controlled battery
Case, including housing, controller, primary heater and battery pack, the housing are double layer hollow housing, and the battery pack is immersed in
In phase-change material；The controller is connected with the primary heater, the first temperature sensor and second temperature sensor respectively, institute
State the first temperature sensor is used to obtain for obtaining the atmospheric temperature of the hull outside, the second temperature sensor
The temperature of the primary heater, the controller gathers the voltage of the battery pack by its built-in A/D analog to digital conversion circuit
Signal is simultaneously converted to the magnitude of voltage of digital quantity, when the Temperature numerical that first temperature sensor is detected is less than preset first
The Temperature numerical that temperature range, the second temperature sensor are detected is interval less than preset second temperature simultaneously while the A/
When the magnitude of voltage that D analog to digital conversion circuits are detected is interval more than preset first voltage, the controller starts the main heating
Device is worked, and its heat transfer is carried out into energy storage to the phase-change material.
Further, it is provided with heat-conducting plate between the primary heater and the phase-change material.
Further, when the Temperature numerical that first temperature sensor is detected is more than the first preset temperature range
Or the Temperature numerical that detects of the second temperature sensor is interval more than the preset second temperature or the A/D moduluses turn
Change magnitude of voltage that electric circuit inspection arrives it is interval less than the preset first voltage when, the controller controls the primary heater to stop
Only work.
Further, the Temperature numerical for detecting when first temperature sensor is between preset first temperature range
Or the Temperature numerical that detects of the second temperature sensor is interval between the preset second temperature or the A/D moduluses turn
Change magnitude of voltage that electric circuit inspection arrives between the preset first voltage it is interval when, the controller controls the primary heater dimension
Hold original state.
Further, the temperature automatically controlled battery case also include auxiliary heater, its inside for being located at the battery pack, and
The auxiliary heater is connected with the controller, and the controller obtains the temperature of the battery pack by three-temperature sensor
Degree, when the Temperature numerical that the three-temperature sensor is detected is less than the 3rd preset temperature range and simultaneously the A/D moulds
When the magnitude of voltage that number change-over circuit is detected is interval more than preset second voltage, the controller starts the auxiliary heater
Work, makes it heat the battery pack.
Further, when the Temperature numerical that the three-temperature sensor is detected is more than the 3rd preset temperature range
Or the magnitude of voltage that detects of the A/D analog to digital conversion circuits it is interval less than the preset second voltage when, the controller control
The auxiliary heater is made to be stopped.
Further, the Temperature numerical for detecting when the three-temperature sensor is between the 3rd preset temperature range
Or the magnitude of voltage that detects of the A/D analog to digital conversion circuits between the preset second voltage it is interval when, the controller control
Make the auxiliary heater and maintain original state.
Further, when the magnitude of voltage that the A/D analog to digital conversion circuits are detected is more than the preset first voltage interval
When, the power supply of the auxiliary heater is external charger；When the magnitude of voltage that the A/D analog to digital conversion circuits are detected is less than institute
When stating preset first voltage interval, the power supply of the auxiliary heater is the electric energy of the battery pack itself storage.
On the other hand, there is provided a kind of control method of temperature automatically controlled battery case, the control method of the primary heater：When
The Temperature numerical that first temperature sensor is detected is sensed less than the first preset temperature range, the second temperature
The Temperature numerical that device is detected is interval less than the preset second temperature and the A/D analog to digital conversion circuits are detected simultaneously
When magnitude of voltage is interval more than the preset first voltage, the controller starts the primary heater work；When described first
The value that temperature sensor or the second temperature sensor or the A/D analog to digital conversion circuits are detected is between corresponding interval interior
When, the controller controls the primary heater to maintain original state；When first temperature sensor or second temperature
The value that degree sensor is detected is less than described pre- more than the value that corresponding temperature range or the A/D analog to digital conversion circuits are detected
When the first voltage put is interval, the controller controls the primary heater to be stopped.
Further, the control method of the auxiliary heater is：When the temperature number that the three-temperature sensor is detected
Value is less than the 3rd preset temperature range magnitude of voltage that simultaneously the A/D analog to digital conversion circuits are detected simultaneously more than described preset
When second voltage is interval, the controller starts the auxiliary heater work；As the three-temperature sensor or the A/D
When the value that analog to digital conversion circuit is detected is in corresponding interval, the controller controls the auxiliary heater to remain original
State；When the value that the three-temperature sensor is detected is more than the 3rd preset temperature range or the A/D moduluses
When the value that change-over circuit is detected is interval less than the preset second voltage, the controller controls the auxiliary heater to stop
Only work.
Compared with the prior art the beneficial effects of the present invention are：1st, heated by the heater, its heat heat is passed
Lead to the phase-change material of high heat storage value, because the battery pack is immersed in the phase-change material, so may insure
In the case of low consumption, moreover it is possible to maintain the equilibrium of the battery pack regional temperature, -20 DEG C~-40 DEG C can be applied to
Extremely low temperature environment under；2nd, the battery unit package can reach the effect of direct energy-storage thermal-insulating in the phase-change material
Really；3rd, the compensation of battery pack temperature is carried out by setting the auxiliary heater, makes it relatively low in battery pack temperature, and heated back
Road voltage starts the auxiliary heater when being more than lowest starting voltage；4th, in the case where there is external charger to connect, pass through
The cooperation of the primary heater and the auxiliary heater, it is ensured that the battery pack disclosure satisfy that the condition of minimum operating temperature；
In the case of without external charger, it is also possible to heated using the electric energy of the battery pack itself storage, it is ensured that institute
State discharge performance of the battery pack under extreme weather conditions.
Brief description of the drawings
Fig. 1 is the part explosive view of battery case in embodiment one；
Fig. 2 is the cross-section front view of battery case of the present invention；
Fig. 3 is the electric operation control circuit figure of controller of the present invention；
Fig. 4 is temperature control block diagram when primary heater of the present invention is heated；
Fig. 5 is temperature control block diagram when auxiliary heater of the present invention is heated；
Fig. 6 is the structural representation of battery pack of the present invention；
Fig. 7 is the part explosive view of battery case in example IV；
Fig. 8 is the front section view of battery case of the present invention；
Fig. 9 is the negative cutaway perspective view of battery case of the present invention；
Figure 10 is the circuit controling drawing of valve positioner of the present invention.
Specific embodiment
Below in conjunction with accompanying drawing, the technical characteristic above-mentioned and other to the present invention and advantage are described in more detail.
Embodiment one
Refer to shown in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, it is respectively the part explosive view of battery case of the present invention, battery case
Temperature control block diagram when cross-section front view, the electric operation control circuit figure of controller and primary heater are heated.
With reference to shown in Fig. 1 and Fig. 2, a kind of temperature automatically controlled battery case, including housing 1, the housing is double layer hollow shell
Body (is not drawn into) in figure；Primary heater 2；Controller 3；Battery pack 4, it is immersed in phase-change material 5.
With reference to shown in Fig. 3 and Fig. 4, the controller 3 is obtained outside the housing 1 by the first temperature sensor 31 respectively
Atmospheric temperature, the temperature of the primary heater 2 is obtained by second temperature sensor 32, by its built-in A/D mould
Number change-over circuit 33 gathers the voltage signal of the battery pack 4 and is converted to the magnitude of voltage of digital quantity, when first temperature is passed
The Temperature numerical that sensor 31 is detected is less than the temperature that the first preset temperature range, the second temperature sensor 32 are detected
The numerical value magnitude of voltage that the A/D analog to digital conversion circuits 33 are detected simultaneously interval less than preset second temperature simultaneously is more than preset
When first voltage is interval, the controller 3 starts the primary heater 2 and works, and its heat transfer is entered to the phase-change material 5
Row energy storage, preferably, heat-conducting plate 21 is provided between the primary heater 2 and phase-change material 5 (Fig. 1 is not drawn into), beneficial to institute
The heat for stating primary heater 2 is conducted to the phase-change material 5, is conducive to the heat that the phase-change material 5 is distributed to be led by described
Hot plate 21 is dispersed into the outside of the housing 1.
Wherein, the battery pack 4 is packaged in the phase-change material 5, can reach the effect of direct energy-storage thermal-insulating, described
Phase-change material 5 use macromolecule composite phase-change material, its phase transition temperature be 40-50 DEG C, with insulation characteristic, can directly with
The battery pack 4 is encapsulated together；It is safe and reliable when using with fire-retardant characteristic；With thermal conductivity factor (thermal conductivity factor K high>
0.8), the heat of the battery pack 4 can be conducted in the inwall of the housing 1 by the phase-change material 5, through the housing
1 by heat diffusion to extraneous.
It is exemplified below：The ambient temperature value that first temperature sensor 31 is detected is T1, preset the first humidity province
Between be 20 DEG C≤T≤25 DEG C；The Temperature numerical of the primary heater that the second temperature sensor 32 is detected is T2, preset
Two temperature ranges are 40 DEG C≤T≤45 DEG C；The magnitude of voltage that the built-in A/D analog to digital conversion circuits 33 of the controller 3 are detected is
U1, it is 25.2V≤U≤26.4V that preset first voltage is interval, when the controller is detected simultaneously by T1<20 DEG C, T2<40 DEG C, U
>During 26.4V, the controller 3 starts the primary heater 2 and enters working condition.
The controller 3 of the invention need to complete self-inspection and initialization before control, to ensure that the controller 3 can
Normal table works, and self-inspection and initialization in the battery case need to be connected with external charger or open the state of cell switch
Lower operation；By detecting atmospheric temperature, it is ensured that the battery case is in the environment of suitable temperature；By detecting the master
The temperature of heater 2 is heated excessively avoiding the phase-change material 5；By the voltage (U for judging the battery pack 4>26.4V,
Show there is external charger to access), it is ensured that the primary heater 2 starts when external charger is accessed.
Battery case of the invention, is heated by the heater 2, by its heat heat transfer to high heat storage value the phase transformation
Material 5, because the battery pack 4 is immersed in the phase-change material 5, so may insure in the case of low consumption, moreover it is possible to tie up
The equilibrium of the regional temperature of the battery pack 4 is held, can be applied under -20 DEG C~-40 DEG C of extremely low temperature environment.
Embodiment two
A kind of temperature automatically controlled battery case as described above, the present embodiment is different from part and is, as shown in figure 4, working as
The Temperature numerical that first temperature sensor 31 is detected is sensed between the first preset temperature range or the second temperature
The Temperature numerical that device 32 is detected is between the voltage that preset second temperature is interval or the A/D analog to digital conversion circuits 33 are detected
It is worth during between preset first voltage interval, the controller 3 controls the primary heater 2 to maintain original state.
The Temperature numerical detected when first temperature sensor 31 is more than preset the first temperature range or described the
The Temperature numerical that two temperature sensors 32 are detected is interval more than preset second temperature or the A/D analog to digital conversion circuits 33 are examined
When the magnitude of voltage for measuring is interval less than preset first voltage, the controller 3 controls the primary heater 2 to be stopped.
It is exemplified below：The ambient temperature value that first temperature sensor 31 is detected is T1, preset the first humidity province
Between be 20 DEG C≤T≤25 DEG C；The Temperature numerical of the primary heater 2 that the second temperature sensor 32 is detected is T2, it is preset
It is 40 DEG C≤T≤45 DEG C that second temperature is interval；The magnitude of voltage that the built-in A/D analog to digital conversion circuits 33 of the controller 3 are detected
It is U1, it is 25.2V≤U≤26.4V that preset first voltage is interval, when the controller 3 detects T1、T2、U1In it is any one
Between it is above-mentioned each self-corresponding interval when, the controller 3 then controls the primary heater 2 to maintain original state, works as institute
State controller 3 and detect T1>25 DEG C or T2>45 DEG C or U1<During any one of 25.2V, the controller 3 controls the master to add
Hot device 2 is stopped.
The present invention makes the primary heater 2 by way of detecting environment temperature or primary heater temperature or battery voltage
It is stopped, when the battery case can be avoided to exceed certain threshold range, also main plus device 2 is heated.
The control method of primary heater described above is：
The Temperature numerical detected when first temperature sensor is less than the first preset temperature range, described the
The Temperature numerical that two temperature sensors are detected is interval less than the preset second temperature and the A/D analog-to-digital conversions are electric simultaneously
When the magnitude of voltage that road detects is interval more than the preset first voltage, the controller starts the primary heater work；
When first temperature sensor or the second temperature sensor or the A/D analog to digital conversion circuits are detected
When value is in corresponding interval, the controller controls the primary heater to maintain original state；
When the value that first temperature sensor or the second temperature sensor are detected is more than corresponding temperature range
Or the value that detects of the A/D analog to digital conversion circuits it is interval less than the preset first voltage when, the controller controls institute
Primary heater is stated to be stopped.
Embodiment three
A kind of temperature automatically controlled battery case as described above, the present embodiment is different from part and is, as shown in fig. 6, its
It is the structural representation of battery pack, with reference to shown in Fig. 3 and Fig. 5, a kind of temperature automatically controlled battery case also includes auxiliary heater 6,
It is connected with the controller 3, and the controller 3 obtains the temperature of the battery pack 4 by three-temperature sensor 34, works as institute
Temperature numerical that three-temperature sensor 34 detects is stated less than the 3rd preset temperature range and A/D analog-to-digital conversions simultaneously
When the magnitude of voltage that circuit 33 is detected is interval more than preset second voltage, the controller 3 starts the work of the auxiliary heater 6
Make, it is directly heated to the battery pack 4.Preferably, the auxiliary heater is located at the battery pack 4 for the present embodiment
Inside, directly heats beneficial to the auxiliary heater 6 to it.
The Temperature numerical detected when the three-temperature sensor 34 is between the 3rd preset temperature range or the A/D
When the magnitude of voltage that analog to digital conversion circuit 33 is detected is between preset second voltage interval, the controller 3 controls the auxiliary
Heater 6 maintains original state.
When the Temperature numerical that the three-temperature sensor 34 is detected is more than preset the 3rd temperature range or the A/D
When the magnitude of voltage that analog to digital conversion circuit 33 is detected is interval less than preset second voltage, the controller 3 controls the auxiliary
Heater 6 is stopped.
It is exemplified below：The battery pack temperature value that the three-temperature sensor 34 is detected is T3, preset the 3rd temperature
Interval is 5 DEG C≤T≤6 DEG C；The magnitude of voltage that the built-in A/D analog to digital conversion circuits 33 of the controller 3 are detected is U1, it is preset
It is 25.2V≤U≤25.6V that second voltage is interval, when the controller 3 detects T3<5 DEG C and while U1>During 25.6V, the control
Device processed 3 then starts the auxiliary heater 6 and enters working condition, when the controller 3 detects T3、U1In any one be situated between
When above-mentioned each self-corresponding interval, the controller 3 then controls the auxiliary heater 6 to maintain original state, when described
Controller 3 detects T1>6 DEG C or U1<During any one of 25.2V, the controller 3 controls the auxiliary heater 6 to stop work
Make.
In the present embodiment, the criterion that the auxiliary heater 6 starts is two conditions of battery pack temperature and battery voltage,
When battery pack temperature is relatively low, and heating circuit voltage be more than lowest starting voltage when can just start the auxiliary heater 6.
The power supply of the auxiliary heater 6 can be external charger, when detecting U>During 26.4V, show there is outside to fill
Electrical equipment is accessed, and now, if the temperature of the battery pack 4 is relatively low, is started the auxiliary heater 6 and is worked to the battery pack 4
Directly heated, it is ensured that the battery pack 4 disclosure satisfy that the condition of minimum operating temperature, with the charging for maintaining its basic
Can, it is to avoid low temperature charges and lithium battery is caused to damage；The power supply of the auxiliary heater 6 can also be that the battery pack 4 is provided
Energy, when detecting U<During 26.4V, show not accessing external charger, now, the primary heater 2 is stopped, if institute
The temperature for stating battery pack 4 is relatively low, then heated using the electric energy of the battery pack 4 itself storage, then by Heat Conduction Material
Directly the battery pack 4 is heated, being a kind of sacrificial section performance ensures the strategy of remaining power supply capacity, directly heats
Also ensure that the maximization of its effectiveness.
Battery case of the invention, in the case where there is external charger to connect, by the primary heater 2 and the auxiliary
The cooperation of heater 6, it is ensured that the battery pack 4 disclosure satisfy that the condition of minimum operating temperature；In the situation without external charger
Under, it is also possible to heated using the electric energy of the battery pack itself storage, it is ensured that the battery pack 4 is in extreme climate bar
Discharge performance under part.
The control method of auxiliary heater described above is：When the Temperature numerical that the three-temperature sensor is detected is small
In the 3rd preset temperature range and simultaneously the magnitude of voltage that detects of the A/D analog to digital conversion circuits more than described preset second
During voltage range, the controller starts the auxiliary heater work；
When the value that the three-temperature sensor or the A/D analog to digital conversion circuits are detected is interior between corresponding interval
When, the controller controls the auxiliary heater to maintain original state；
When the value that the three-temperature sensor is detected is more than the 3rd preset temperature range or the A/D moduluses
When the value that change-over circuit is detected is interval less than the preset second voltage, the controller controls the auxiliary heater to stop
Only work.
Example IV
Refer to shown in Fig. 7, Fig. 8, Fig. 9, it is respectively the part explosive view of battery case of the present invention, the front of battery case and cuts open
The negative cutaway perspective view of view and battery case.
With reference to shown in Fig. 7 to Fig. 9, a kind of battery case, including housing 1, the housing 1 is double layer hollow housing, its internal layer
Some interconnected passages 11 are provided between outer layer, the housing 1 is provided with two valves being connected with the passage 11
Door, inwardly, the circulating direction of valve described in is outside for the circulating direction of valve described in.
Specifically, with reference to shown in Fig. 7 to Fig. 9, the housing 1 is provided with two valves, it is series at the passage respectively
On 11, wherein, a valve 12 can be used in controlling the entrance of air, and it is empty that another described valve 13 can be used in control
The outflow of gas, when two valves are all in closed mode, the air in the passage 11 is in the state not circulated, energy
Enough realize the effect of heat-insulation and heat-preservation；As shown in Figure 8 and Figure 9, the signified direction of arrow is the direction of air flow in figure, when two
All in opening, i.e., the circulating direction of valve 12 is inside described in one, the circulating direction of another valve 13 for the valve
Outwards, extraneous air returns to outside sky via the passage 11 of valve described in one 12, enclosure interior, again via another valve 13
Between, the gas channel that this extraneous air is formed with the passage 11 can take away waste heat by air circulation, play cold
But effect.
Preferably, surrounding of the present embodiment in the housing 1 is designed with the interconnected passage 11, so,
When air stream passes through the passage 11, the surrounding of the housing 1 can be made to be filled with the air for circulating, radiating effect is more preferable.
Preferably, the preferably bidirectional valve of the valve of the present embodiment, due to the circulating direction of the two way valve
Both can be outside, it is also possible to inwardly, therefore, when multiple two way valves are provided with the housing 1, can randomly choose
Inwardly, the circulating direction of valve is outside at least described in one, such as the circulating direction of valve at least described in one:When being provided with described in four
During two way valve, a circulating direction for the valve can be selected inwardly, a circulating direction for the valve is outside, other
Valve closing；Or a circulating direction for the valve can also be selected inwardly, the circulating direction of its excess-three valve
Outside or other selection modes, the setting of the two way valve, increased the diversity of selection, and the situation of selection can be according to case
The different situations of body internal temperature are selected.
Preferably, be provided with dustcloth (being not drawn into figure) in the exit of the valve, for stopping outside air in
Dust or large particulate matter enter the passage 11 in, with passage 11 described in anti-clogging.
Further, the present embodiment can also extract the air in the passage 11 by the valve, make in the passage 11
Certain negative pressure is formed, more preferably heat insulation and preservation effect is realized, specifically, valve described in keeping is closed, another
Air pump is connected on the outside valve of circulating direction, the air in the passage 11 is extracted by the air pump, made described logical
Certain negative pressure is reached in road 11.
In the present embodiment, the quantity of the valve is not limited only to two, can also be two or more, wherein, at least one
Inwardly, the circulating direction of valve described at least one is outside for the circulating direction of the individual valve.
Embodiment five
A kind of battery case as described above, it is that as shown in Figure 10, it is Valve controlling that the present embodiment is different from part
The circuit controling drawing of device, a kind of battery case, also including valve positioner 7, it is with the pressure sensor 71 and the valve
Switch 72 is connected, and the pressure sensor 71 is used to detect the pressure in the passage 11, when the pressure sensor 71 is detected
When the pressure value for arriving is more than the pressure threshold in the passage 11, the valve positioner 3 controls an at least circulating direction outside
The valve unlatching.
The present embodiment, pressure in the passage 11 is detected by setting the pressure sensor 71, is more than in detected value
During pressure threshold, the controller controls the outside valve opening of circulating direction to discharge pressure, can avoid described
When temperature in passage 11 is too high, expand inner air, the danger exploded.
Embodiment six
A kind of battery case as described above, it is that as shown in Figure 10, it is Valve controlling that the present embodiment is different from part
The circuit controling drawing of device, a kind of battery case, also including temperature sensor 73, it is connected with the valve positioner 3, the temperature
Sensor 73 is used to detect the temperature in the passage 11, when the temperature value that the temperature sensor 73 is detected is logical more than described
During temperature threshold in road 11, the valve positioner 3 controls the valve to turn to air draft to cool down；When the pressure sensor 71
The pressure value for detecting is less than less than the temperature value that the pressure threshold and the temperature sensor 73 in the passage 11 are detected
During temperature threshold in the passage 11, the valve positioner 3 controls the valve closing, to play the effect of heat-insulation and heat-preservation
Really.
In the present embodiment, when temperature is too high, the phase-change material 5 of high thermal conductivity coefficient can conduct internal heat
Onto the inwall of the housing 1, the controller 3 controls the direction of the valve auto-steering air draft cooling, reaches radiating
Function, while can also reduce the pressure in the passage 11；When temperature is too low, if what the pressure sensor 71 was detected
Pressure value then can control the closing of the valve, to ensure in the passage 11 less than the pressure threshold in the passage 11
Make its internal state in closing, now, too low temperature in the passage 11 in the case that pressure is in a safe condition again
Temperature-compensating can be carried out by the phase-change material 5 of storage in the housing 1.
Embodiment seven
A kind of battery case as described above, the present embodiment is different from part and is, as shown in fig. 7, the bottom of the housing 1
Portion is provided with some ribs 8, for supporting the weight inside the housing 1.
Above-described embodiment is heated using using the primary heater 2, the compensation temperature of the auxiliary heater 6, using described
Phase-change material 5 directly encapsulates the battery pack 4, realizes heat accumulation, the function of insulation；The air channel of the enclosure interior circulation is plus certainly
The opening direction of dynamicization control valve realizes the double action of air heat insulation insulation and radiating and cooling.
The above is only the preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
Member, on the premise of the inventive method is not departed from, can also make some improvement and supplement, and these are improved and supplement also should be regarded as
Protection scope of the present invention.
Claims (10)
1. a kind of temperature automatically controlled battery case, including housing, the housing is double layer hollow housing, it is characterised in that also included
Controller, primary heater and battery pack, the battery pack are immersed in phase-change material；
The controller is connected with the primary heater, the first temperature sensor and second temperature sensor respectively, and described first
Temperature sensor is used to obtain the atmospheric temperature of the hull outside, and the second temperature sensor is used to obtain the master
The temperature of heater, the controller passes through the voltage signal of its built-in A/D analog to digital conversion circuits collection battery pack simultaneously
The magnitude of voltage of digital quantity is converted to, when the Temperature numerical that first temperature sensor is detected is less than the first preset humidity province
Between, the Temperature numerical that detects of the second temperature sensor is interval less than preset second temperature and A/D moduluses simultaneously
When the magnitude of voltage that change-over circuit is detected is interval more than preset first voltage, the controller starts the primary heater work
Make, and its heat transfer is carried out into energy storage to the phase-change material.
2. temperature automatically controlled battery case according to claim 1, it is characterised in that the primary heater and the phase transformation material
Heat-conducting plate is provided between material.
3. temperature automatically controlled battery case according to claim 1, it is characterised in that when first temperature sensor detection
To the Temperature numerical that detects more than the first preset temperature range or the second temperature sensor of Temperature numerical it is big
In the magnitude of voltage that the preset second temperature is interval or the A/D analog to digital conversion circuits are detected less than described preset first
During voltage range, the controller controls the primary heater to be stopped.
4. temperature automatically controlled battery case according to claim 3, it is characterised in that when first temperature sensor detection
To the Temperature numerical that detects between preset first temperature range or the second temperature sensor of Temperature numerical be situated between
In the magnitude of voltage that the preset second temperature is interval or the A/D analog to digital conversion circuits are detected between described preset first
During voltage range, the controller controls the primary heater to maintain original state.
5. temperature automatically controlled battery case according to claim 1, it is characterised in that also including auxiliary heater, it is located at
The inside of the battery pack, and the auxiliary heater is connected with the controller, the controller passes through the 3rd TEMP
Device obtains the temperature of the battery pack, when the Temperature numerical that the three-temperature sensor is detected is less than the 3rd preset temperature
When magnitude of voltage interval and that the A/D analog to digital conversion circuits are detected simultaneously is more than preset second voltage interval, the control
Device starts the auxiliary heater work, it is heated the battery pack.
6. temperature automatically controlled battery case according to claim 5, it is characterised in that when three-temperature sensor detection
To the magnitude of voltage that detects more than the 3rd preset temperature range or the A/D analog to digital conversion circuits of Temperature numerical be less than
When the preset second voltage is interval, the controller controls the auxiliary heater to be stopped.
7. temperature automatically controlled battery case according to claim 6, it is characterised in that when three-temperature sensor detection
To the magnitude of voltage that detects between the 3rd preset temperature range or the A/D analog to digital conversion circuits of Temperature numerical between
When the preset second voltage is interval, the controller controls the auxiliary heater to maintain original state.
8. temperature automatically controlled battery case according to claim 5, it is characterised in that when A/D analog to digital conversion circuits inspection
When the magnitude of voltage for measuring is interval more than the preset first voltage, the power supply of the auxiliary heater is external charger；When
When the magnitude of voltage that the A/D analog to digital conversion circuits are detected is interval less than the preset first voltage, the auxiliary heater
Power supply be the battery pack itself storage electric energy.
9. the control method of a kind of temperature automatically controlled battery case as described in claim 5-8 is any, it is characterised in that
The control method of the primary heater：The Temperature numerical detected when first temperature sensor is less than described preset
The Temperature numerical that first temperature range, the second temperature sensor are detected is interval less than the preset second temperature and same
When the magnitude of voltage that Shi Suoshu A/D analog to digital conversion circuits are detected is interval more than the preset first voltage, the controller is opened
The dynamic primary heater work；
When the value that first temperature sensor or the second temperature sensor or the A/D analog to digital conversion circuits are detected is situated between
When corresponding interval interior, the controller controls the primary heater to maintain original state；
When the value that first temperature sensor or the second temperature sensor are detected is more than corresponding temperature range or institute
State value that A/D analog to digital conversion circuits detect it is interval less than the preset first voltage when, the controller controls the master
Heater is stopped.
10. the control method of temperature automatically controlled battery case according to claim 9, it is characterised in that
The control method of the auxiliary heater is：The Temperature numerical detected when the three-temperature sensor is less than preset
The 3rd temperature range magnitude of voltage that simultaneously the A/D analog to digital conversion circuits are detected simultaneously is interval more than the preset second voltage
When, the controller starts the auxiliary heater work；
When the value that the three-temperature sensor or the A/D analog to digital conversion circuits are detected is in corresponding interval, institute
Stating controller controls the auxiliary heater to maintain original state；
When the value that the three-temperature sensor is detected is more than preset the 3rd temperature range or the A/D analog-to-digital conversions
When the value that electric circuit inspection is arrived is interval less than the preset second voltage, the controller controls the auxiliary heater to stop work
Make.
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| CN201710237559.XA CN106876617B (en) | 2017-04-12 | 2017-04-12 | Automatic temperature control battery box and control method thereof |
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