CN106849256A - The control system that a kind of battery low temperature charges - Google Patents
The control system that a kind of battery low temperature charges Download PDFInfo
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- CN106849256A CN106849256A CN201710141446.XA CN201710141446A CN106849256A CN 106849256 A CN106849256 A CN 106849256A CN 201710141446 A CN201710141446 A CN 201710141446A CN 106849256 A CN106849256 A CN 106849256A
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- 238000010438 heat treatment Methods 0.000 claims abstract description 40
- 230000005540 biological transmission Effects 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 description 7
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000012545 processing Methods 0.000 description 4
- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 3
- 229910018095 Ni-MH Inorganic materials 0.000 description 3
- 229910018487 Ni—Cr Inorganic materials 0.000 description 3
- 229910018477 Ni—MH Inorganic materials 0.000 description 3
- 239000002253 acid Substances 0.000 description 3
- VNNRSPGTAMTISX-UHFFFAOYSA-N chromium nickel Chemical compound [Cr].[Ni] VNNRSPGTAMTISX-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910052744 lithium Inorganic materials 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000002427 irreversible effect Effects 0.000 description 2
- 230000010287 polarization Effects 0.000 description 2
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000004886 process control Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H02J7/0091—
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- Secondary Cells (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention discloses a kind of battery low temperature charge control system and method, solve battery at low ambient temperatures charge normal problem；Including charger and the default device of battery battery core, the default device of battery battery core includes multiple temperature sensors and multiple heating units, and charger includes charhing unit, charging control unit, data acquisition unit, data transmission unit and threshold decision unit；Multiple temperature sensors and multiple heating units are distributed in not existing together for battery battery core inside and/or surface；The temperature value of data acquisition unit Real-time Collection temperature sensor is transferred to charging control unit by data transmission unit；Charging control unit utilizes the temperature value of threshold decision unit judges battery battery core, and charging control unit controls the work of heating unit and charhing unit according to the judged result of threshold decision unit.
Description
Technical field
The invention belongs to battery correlative technology field, and in particular to the control system that a kind of battery low temperature charges.
Background technology
With social progress and development, battery has become the core component of power source, due to not only small volume, capacity
Greatly, voltage stabilization, easy to carry and use, reusable edible meet the theory of sustainable development, so being subject to people greatly
Pay close attention to and be applied to extensive field.Current existing battery has lead-acid battery, nickel chromium triangle/Ni-MH battery and lithium battery, wherein,
Lead-acid battery is high because of existing more than 140 years history, customer acceptance degree, and recovery technology is ripe, and cheap, so existing extensive use
In multiple fields such as automobile starting, communication, railway, tractions.Nickel chromium triangle/Ni-MH battery is low because of price, and service life is more long, can high power
Rate is discharged, in military, civil area all with extensive.Lithium battery is most popular battery at present, with specific energy is high, circulation
Long lifespan, using safety, high temperature resistant, capacity be big and advantage of memory-less effect, so be applied to every field, such as hand
Machine, portable digital product, electric automobile and energy storage device etc..
Because the field of battery applications is quite extensive, so use environment is often harsh comparing, many times need
Battery can work under 0 DEG C of even lower temperature environment, so battery charging technique at low ambient temperatures is also extensive by people
Pay close attention to, research show lead-acid battery in less than 0 DEG C of environment, temperature often reduces by 10 DEG C of internal resistances and about increases 15% or so, because
For sulfuric acid solution viscosity becomes big, so increasing sulfuric acid solution resistance, and the influence of electrode polarization is aggravated, accumulator capacity meeting
Significantly reduce, had a strong impact on the performance of battery.Charge at low ambient temperatures, concentration polarization aggravation can cause charge efficiency to drop
It is low, have impact on the use function of battery.Nickel chromium triangle/Ni-MH battery can equally run into cell voltage and capacity drop at low ambient temperatures
It is low, the problems such as charge efficiency is low.For lithium battery when temperature is less than 0 DEG C, the performance such as voltage, capacity of battery occurs
Different degrees of decline, charging voltage is in nonlinear change, and internal resistance change relatively acutely, has a strong impact on the service life of battery,
Charging capacity significantly declines, and has damaged the performance of battery.And the technical barrier charged under low temperature never has
It is hacked.
At present, for above-mentioned battery in low temperature environment charging problems, also ununified method.The conventional method of solution
It is that battery is placed in normal temperature environment, is charged again after its internal temperature tends towards stability.But this method is subject to ring significantly
The limitation in border, does not apply under the cold environmental conditions such as adverse circumstances or field of aerospace in the wild.
The content of the invention
In view of this, the invention provides the control system that a kind of battery low temperature charges, can solve the problem that battery in low temperature ring
Problem is charged normal under border, while ensureing not damaging battery functi on and performance in charging process.
Implement of the invention comprising the following steps that：
A kind of control system that battery low temperature charges, the system includes charger and the default device of battery battery core, battery electricity
The default device of core includes multiple temperature sensors and multiple heating units, and charger includes charhing unit, charging control unit, number
According to collecting unit, data transmission unit and threshold decision unit；
Multiple temperature sensors and multiple heating units are distributed in not existing together for battery battery core inside and/or surface；
The temperature value of data acquisition unit Real-time Collection temperature sensor is transferred to charge control by data transmission unit
Unit；
Charging control unit utilizes the temperature value of threshold decision unit judges battery battery core, and charging control unit is according to threshold value
The judged result control heating unit of judging unit and the work of charhing unit：
Battery is under uncharged state：As threshold value S1 of the battery core temperature value for obtaining less than setting, charging control unit
Control heating unit is heated to battery battery core；When the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, fill
Electric control unit control heating unit is heated to battery battery core, and control charhing unit charges to battery battery core；When obtaining
The battery core temperature value for taking charges higher than the threshold value S2 for setting, charging control unit control charhing unit to battery battery core；
Battery is under charged state：When the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, control of charging
Unit control heating unit processed is heated to battery battery core, and control charhing unit charges to battery battery core；When what is obtained
When battery core temperature value is higher than the threshold value S2 for setting, charging control unit control charhing unit charges to battery battery core, controls
Heating unit is not heated to battery battery core.
Further, heating unit uses heating film or resistance screen.
Beneficial effect：
1) the system is first judged battery temperature, and utilize external power supply using the threshold decision unit of charger
First battery battery core is heated, inside is allowed to and is reached design temperature, and in thermal equilibrium state so that the voltage of battery, appearance
Amount etc. performance ensured, using the system not only solve battery at low ambient temperatures can not charge normal problem, while
Ensure not damaging battery functi on and performance in charging process.
2) temperature of the system Real-time Collection battery battery core and it is made to be not less than the preset temperature S1 for damaging battery performance, from
And the irreversible damage of physically and electrically chemical property of battery battery core in charging process is avoided, the service life of battery is extended,
Also so that the system is applicable in the extremely low wild environment of environment temperature or field of aerospace.
Brief description of the drawings
Fig. 1 is system structure diagram of the invention.
Fig. 2 is the flow chart of low temperature charging system.
Specific embodiment
Develop simultaneously embodiment below in conjunction with the accompanying drawings, and the present invention will be described in detail.
The invention provides the batter-charghing system under a kind of low temperature environment, the system includes that charger and battery battery core are pre-
If device, the default device of battery battery core includes multiple temperature sensors and multiple heating units, and charger includes charhing unit, fills
Electric control unit, data acquisition unit, data transmission unit and threshold decision unit；
Multiple temperature sensors and multiple heating units are distributed in not existing together for battery battery core inside and/or surface；
The temperature value of data acquisition unit Real-time Collection temperature sensor is transferred to charge control by data transmission unit
Unit；
Charging control unit utilizes the temperature value of threshold decision unit judges battery battery core, and charging control unit is according to threshold value
The judged result control heating unit of judging unit and the work of charhing unit：
Battery is under uncharged state, as threshold value S1 of the battery core temperature value for obtaining less than setting, charging control unit
Control heating unit is heated to battery battery core；When the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, fill
Electric control unit control heating unit is heated to battery battery core, and control charhing unit charges to battery battery core；When obtaining
The battery core temperature value for taking charges higher than the threshold value S2 for setting, charging control unit control charhing unit to battery battery core；
Battery is under charged state, when the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, control of charging
Unit control heating unit processed is heated to battery battery core, and control charhing unit charges to battery battery core；When what is obtained
When battery core temperature value is higher than the threshold value S2 for setting, charging control unit control charhing unit charges to battery battery core, controls
Heating unit is not heated to battery battery core.
Wherein, charging control unit is the nucleus module in charger, and data acquisition unit obtains temperature sensor
Temperature signal is converted into data signal, is transferred in the control chip in charger charging control unit, and threshold value is then passed through again
Judging unit is threshold decision and control logic processes the control signal provided to heating unit, adding inside control battery battery core
Heat, makes battery core temperature reach the charging process restarted after suitable chargeable scope for battery core, and charging can pass after terminating
Close all heating units.By above-mentioned temperature control, the external power supply being input into using charger is first added to battery battery core
Heat, is allowed to inside and reaches design temperature, and in thermal equilibrium state, it is to avoid the physically and electrically chemistry of battery battery core in charging process
The irreversible damage of performance, extends the service life of battery.
Heating unit is executing agency when being heated to battery, has various heaters optional at present, these heating units
Stable performance, generally purely resistive, make that the conversion efficiency rate of exchange are high heat energy is converted electric energy to, and conversion ratio is more than 99%.Can
The heating for battery battery core surface is realized using heating film, resistance screen or other heating arrangements.
Heating unit and battery core intimate surface contact, because heating material has good electric conductivity, are provided simultaneously with good
Thermal conductivity, when environment temperature is higher, be favorably improved the heat dispersion of battery, improve the high temperature power supply performance of battery.
Charging control unit is control and the core of processing data of whole charger, can select single-chip microcomputer or DSP
The embeded processors such as chip control the core of circuit to construct.Consider according to comprehensive cost performance, single-chip microcomputer can be selected to do
Kernel control chip.There is the ability of stronger collection and processing data due to the single-chip microcomputer under current technical status, with reference to
Traditional BUCK reduction voltage circuits using the performance for having preferable charge control and processing data, make charger realize low temperature,
Self Adaptive Control under normal temperature, hot environment, realizes charge control of the battery in suitable chargeable range.
Data transmission unit is exactly as shown in figure 1, data measured by temperature sensor in battery are sent to charge control
In module, corresponding data processing is then carried out again.
Data acquisition unit is exactly the temperature sensor signal typically all analog quantity obtained from data transmission unit, is charged
Control chip is processed only for digital quantity, therefore analog quantity need to be converted into digital quantity, Ran Houjing by data acquisition unit
Demarcation is crossed, the temperature value after corresponding quantizing is obtained.
Threshold decision unit：Threshold decision unit is carried out in control chip, in advance the property settings according to battery two
Threshold value S1, S2 (usual S1>0 DEG C), when temperature is less than S1, charging control unit starts heating unit, real according to control logic
Now to the computer heating control of battery battery core, when detection temperature is higher than threshold value S1, charging control unit is according to temperature sensor signal
Judged, start battery and charge.Meanwhile, computer heating control logic provides pwm control signal, realizes in charging process, and battery is electric
The surface temperature of core is all the time in the suitable chargeable range between S1, S2.
Above is to the present invention under less than 0 DEG C of cryogenic conditions to battery charging process control detailed description, it is described only
So that battery charges at low ambient temperatures as an example, heater need not be started under normal temperature condition, be carried out according to control is charged normal.
In sum, presently preferred embodiments of the present invention is these are only, is not intended to limit the scope of the present invention.
All any modification, equivalent substitution and improvements within the spirit and principles in the present invention, made etc., should be included in of the invention
Within protection domain.
Claims (2)
1. the control system that a kind of battery low temperature charges, it is characterised in that the system includes charger and the default dress of battery battery core
Put, the default device of battery battery core includes multiple temperature sensors and multiple heating units, charger includes charhing unit, control of charging
Unit processed, data acquisition unit, data transmission unit and threshold decision unit；
Multiple temperature sensors and multiple heating units are distributed in not existing together for battery battery core inside and/or surface；
The temperature value of data acquisition unit Real-time Collection temperature sensor is transferred to charging control unit by data transmission unit；
Charging control unit utilizes the temperature value of threshold decision unit judges battery battery core, and charging control unit is according to threshold decision
The judged result control heating unit of unit and the work of charhing unit：
Battery is under uncharged state：As threshold value S1 of the battery core temperature value for obtaining less than setting, charging control unit control
Heating unit is heated to battery battery core；When the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, control of charging
Unit control heating unit processed is heated to battery battery core, and control charhing unit charges to battery battery core；When what is obtained
Battery core temperature value charges higher than the threshold value S2 for setting, charging control unit control charhing unit to battery battery core；
Battery is under charged state：When the battery core temperature value for obtaining is in the threshold value of setting in [S1,S2] in, charge control list
Unit's control heating unit is heated to battery battery core, and control charhing unit charges to battery battery core；When the battery core for obtaining
When temperature value is higher than the threshold value S2 for setting, charging control unit control charhing unit charges to battery battery core, control heating
Unit is not heated to battery battery core.
2. the control system that a kind of battery low temperature charges as claimed in claim 1, it is characterised in that heating unit uses heating film
Or resistance screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710141446.XA CN106849256A (en) | 2017-03-10 | 2017-03-10 | The control system that a kind of battery low temperature charges |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201710141446.XA CN106849256A (en) | 2017-03-10 | 2017-03-10 | The control system that a kind of battery low temperature charges |
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| CN106849256A true CN106849256A (en) | 2017-06-13 |
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| CN201710141446.XA Pending CN106849256A (en) | 2017-03-10 | 2017-03-10 | The control system that a kind of battery low temperature charges |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111211382A (en) * | 2020-01-07 | 2020-05-29 | 福建科立讯通信有限公司 | System and method for improving low-temperature performance of common battery |
| CN111384460A (en) * | 2018-12-29 | 2020-07-07 | 中信国安盟固利动力科技有限公司 | Multi-parameter integrated device of ion battery and preparation method thereof |
| CN111916865A (en) * | 2020-07-23 | 2020-11-10 | 柳州市智甲金属科技有限公司 | Temperature control system and control method for battery pack |
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| CN102593547A (en) * | 2011-01-18 | 2012-07-18 | 上海鼎研智能科技有限公司 | Low-temperature charging heating and protecting method for secondary battery pack |
| CN103051026A (en) * | 2012-12-21 | 2013-04-17 | 上海恒动汽车电池有限公司 | Lithium ion battery pack charge heating system and heating method |
| CN104242389A (en) * | 2014-09-01 | 2014-12-24 | 广东欧珀移动通信有限公司 | Charging circuit, battery core and mobile terminal |
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2017
- 2017-03-10 CN CN201710141446.XA patent/CN106849256A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102593547A (en) * | 2011-01-18 | 2012-07-18 | 上海鼎研智能科技有限公司 | Low-temperature charging heating and protecting method for secondary battery pack |
| CN103051026A (en) * | 2012-12-21 | 2013-04-17 | 上海恒动汽车电池有限公司 | Lithium ion battery pack charge heating system and heating method |
| CN104242389A (en) * | 2014-09-01 | 2014-12-24 | 广东欧珀移动通信有限公司 | Charging circuit, battery core and mobile terminal |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111384460A (en) * | 2018-12-29 | 2020-07-07 | 中信国安盟固利动力科技有限公司 | Multi-parameter integrated device of ion battery and preparation method thereof |
| CN111211382A (en) * | 2020-01-07 | 2020-05-29 | 福建科立讯通信有限公司 | System and method for improving low-temperature performance of common battery |
| CN111916865A (en) * | 2020-07-23 | 2020-11-10 | 柳州市智甲金属科技有限公司 | Temperature control system and control method for battery pack |
| CN111916865B (en) * | 2020-07-23 | 2023-10-13 | 柳州市智甲金属科技有限公司 | Temperature control system and control method for battery pack |
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Application publication date: 20170613 |
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