CN102479982A - Low-temperature charging method of secondary battery pack - Google Patents
Low-temperature charging method of secondary battery pack Download PDFInfo
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- CN102479982A CN102479982A CN2010105624643A CN201010562464A CN102479982A CN 102479982 A CN102479982 A CN 102479982A CN 2010105624643 A CN2010105624643 A CN 2010105624643A CN 201010562464 A CN201010562464 A CN 201010562464A CN 102479982 A CN102479982 A CN 102479982A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- 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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Abstract
The invention aims to solve problems of a secondary battery pack when the secondary battery pack is charged at low temperature and provides a solution method. The solution method includes that secondary batteries generate heat in a discharge status or are externally heated, so that the secondary battery pack can be normally charged in a low-temperature environment, and normal use of the secondary battery pack cannot be affected.
Description
Technical field
Patent of the present invention relates to a kind of charging method of secondary battery, relates in particular to a kind of method of low temperature charging.
Background technology
Temperature has the greatest impact to the charge-discharge performance of secondary cell, and the electrochemical reaction on electrode, electrolyte interface is relevant with ambient temperature, and electrode, electrolyte interface are regarded as the heart of battery.If temperature descends, the reactivity of electrode also descends, and supposes that cell voltage keeps constant, and discharging current reduces, and the power output of battery also can descend.If temperature rises then opposite, promptly the battery power output can rise, and temperature also influences the transfer rate temperature rising of electrolyte then to be accelerated, and transmits temperature and descends, and transmission is slowed down, and the battery charging and discharging performance also can be affected.But temperature is too high, can destroy the chemical balance in the battery, causes side reaction.
For example storage battery is under low temperature condition, and each active material activity reduces, and the P dissolving on its electrode becomes difficult; Be difficult to replenished after consuming P during charging; Institute's charging current descends significantly, and positive plate charges in the time of-20 ℃ and accepts electric current and be merely 70% of normal temperature, and the negative pole charging receives the influence of swelling agent; The low temperature charge acceptance is lower, and-20 ℃ charging is accepted electric current and is merely 40% under the normal temperature.Therefore, charging exists mainly that charge acceptance is poor, the problem of undercharge under the cryogenic conditions.
Lithium ion battery at low temperatures; The reactivity of electricity core electrode is very low, electrolyte even can play solidifying point, and battery performance is very low; The time of charging can shorten greatly; The electric weight of actual charging seldom, the actual performance of battery is demarcated electric weight well below battery during use, and shortened the normal service time of battery greatly.
Summary of the invention
Patent of the present invention proposes a kind of solution to the problem of secondary battery when low temperature charges, and secondary battery also can be charged normal at low temperature environment, thereby do not influence normal use.
1. the object of the invention and solve its technical problem and adopt following technical scheme to realize: a kind of secondary battery low temperature charging method; Can be according to the difference of electric core temperature in the secondary battery; Automatically select charging modes; It is characterized in that: when secondary battery began to charge, the battery management system of secondary battery (BMS) received the temperature signal of battery temperature-sensing device, and the temperature T of electric core is guarded against temperature T with setting low temperature
0Comparison:
A. work as T
The electricity core＜T
0When being false, electric core temperature is higher than sets low temperature warning temperature T
0, secondary battery can charge normal, and battery management system can be chosen suitable rate of charge C charging automatically according to the difference of temperature under this state, and its rate of charge can be divided according to the difference of temperature as follows:
T
0＜T
The electricity core＜T
1Rate of charge is C
1
T
The electricity core＜T
2(T
2＞T
1) rate of charge is C
2
T
The electricity core＜T
3(T
3＞T
2) rate of charge is C
3
…………
B. work as T
The electricity core＜T
0During establishment, electric core temperature is lower than sets low temperature warning temperature T 0, and secondary battery can't charge normal, and the battery management system of secondary battery (BMS) is compared the state-of-charge SOC that sets according to the state-of-charge (SOC) of secondary battery
0,
If the SOC＞SOC of secondary battery
0, promptly the dump energy in the secondary battery is higher than the state-of-charge SOC of setting
0, battery management system is opened the load circuit regular hour Ts that discharges, and secondary battery can produce certain heat down at the state of discharge, makes the temperature rising of electric core in the secondary battery, reaches the temperature of charging requirement, then begins to charge normal;
If the SOC＜SOC of secondary battery
0, the dump energy in the secondary battery is lower than the state-of-charge SOC of setting
0, then need utilize the external heated mode that secondary battery is heated, make it reach the requirement of charging.
Aforesaid secondary battery low temperature charging method, opening or closing of wherein said load circuit can be controlled by battery management system, also can be by battery management system control with SOC and SOC
0The judged result control centre that sends to other control.
Aforesaid secondary battery low temperature charging method, wherein said load includes but not limited to power resistor, digital load etc.
Aforesaid secondary battery low temperature charging method, the heat that wherein said load produced can be used for the heating to secondary battery, also can directly externally disperse.
Description of drawings
Fig. 1 system pattern figure
Embodiment
As shown in Figure 1; A kind of secondary battery low temperature charging method; Can select charging modes automatically according to the difference of electric core temperature in the secondary battery, it is characterized in that: when secondary battery begins to charge; The battery management system of secondary battery (BMS) receives the temperature signal of battery temperature-sensing device, and the temperature T of electric core is guarded against temperature T with setting low temperature
0Comparison:
A. work as T
The electricity core＜T
0When being false, electric core temperature is higher than sets low temperature warning temperature T
0, secondary battery can charge normal, and battery management system can be chosen suitable rate of charge C charging automatically according to the difference of temperature under this state, and its rate of charge can be divided according to the difference of temperature as follows:
T
0＜T
The electricity core＜T
1Rate of charge is C
1
T
The electricity core＜T
2(T
2＞T
1) rate of charge is C
2
T
The electricity core＜T
3(T
3＞T
2) rate of charge is C
3
…………
B. work as T
The electricity core＜T
0During establishment, electric core temperature is lower than sets low temperature warning temperature T 0, and secondary battery can't charge normal, and the battery management system of secondary battery (BMS) is compared the state-of-charge SOC that sets according to the state-of-charge (SOC) of secondary battery
0,
If the SOC＞SOC of secondary battery
0, promptly the dump energy in the secondary battery is higher than the state-of-charge SOC of setting
0, battery management system is opened the load circuit regular hour Ts that discharges, and secondary battery can produce certain heat down at the state of discharge, makes the temperature rising of electric core in the secondary battery, reaches the temperature of charging requirement, then begins normal charging;
If the SOC＜SOC of secondary battery
0, the dump energy in the secondary battery is lower than the state-of-charge SOC of setting
0, then need utilize the external heated mode that secondary battery is heated, make it reach the requirement of charging.
Claims (6)
1. secondary battery low temperature charging method; Can be according to the difference of electric core temperature in the secondary battery; Automatically select charging modes; It is characterized in that: when secondary battery began to charge, the battery management system of secondary battery (BMS) received the temperature signal of battery temperature-sensing device, and the temperature T of electric core is guarded against temperature T with setting low temperature
0Comparison:
A. work as T
The electricity core＜T
0When being false, electric core temperature is higher than sets low temperature warning temperature T
0, secondary battery can charge normal, and battery management system can be chosen suitable rate of charge C charging automatically according to the difference of temperature under this state, and its rate of charge can be divided according to the difference of temperature as follows:
T
0＜T
The electricity core＜T
1Rate of charge is C
1
T
The electricity core＜T
2(T
2＞T
1) rate of charge is C
2
T
The electricity core＜T
3(T
3＞T
2) rate of charge is C
3
…………
B. work as T
The electricity core＜T
0During establishment, electric core temperature is lower than sets low temperature warning temperature T 0, and secondary battery can't charge normal, and the battery management system of secondary battery (BMS) is compared the state-of-charge SOC that sets according to the state-of-charge (SOC) of secondary battery
0,
If the SOC＞SOC of secondary battery
0, promptly the dump energy in the secondary battery is higher than the state-of-charge SOC of setting
0, battery management system is opened the load circuit regular hour Ts that discharges, and secondary battery can produce certain heat down at the state of discharge, makes the temperature rising of electric core in the secondary battery, reaches the temperature of charging requirement;
If the SOC＜SOC of secondary battery
0, the dump energy in the secondary battery is lower than the state-of-charge SOC of setting
0, then need utilize the external heated mode that secondary battery is heated, make its requirement that reaches charging, then begin to charge normal.
2. secondary battery low temperature charging method according to claim 1 is characterized in that opening or closing of load circuit can be controlled by battery management system.
3. secondary battery low temperature charging method according to claim 1 is characterized in that opening or closing of load circuit can be by battery management system control with SOC and SOC
0The judged result control centre that sends to other control.
4. load circuit according to claim 1 is characterized in that described load includes but not limited to power resistor, digital load etc.
5. load circuit according to claim 1 is characterized in that load can place in the secondary battery, also can place outside the secondary battery.
6. according to claim 1 or 4 described load circuits, it is characterized in that the heat that load produces, can be used for heating, also can directly externally disperse secondary battery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105624643A CN102479982A (en) | 2010-11-26 | 2010-11-26 | Low-temperature charging method of secondary battery pack |
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|---|---|---|---|
| CN2010105624643A CN102479982A (en) | 2010-11-26 | 2010-11-26 | Low-temperature charging method of secondary battery pack |
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| Publication Number | Publication Date |
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| CN102479982A true CN102479982A (en) | 2012-05-30 |
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| CN2010105624643A Pending CN102479982A (en) | 2010-11-26 | 2010-11-26 | Low-temperature charging method of secondary battery pack |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856604A (en) * | 2012-10-09 | 2013-01-02 | 惠州市亿能电子有限公司 | Quick charging method based on temperature and charging power |
| CN103490119A (en) * | 2013-01-23 | 2014-01-01 | 深圳市巨星科技有限公司 | Lithium battery heating mechanism in low-temperature environment |
| CN104124482A (en) * | 2013-04-28 | 2014-10-29 | 华为终端有限公司 | Charging method, charging device and electronic equipment |
| CN104813532A (en) * | 2012-11-30 | 2015-07-29 | 索尼公司 | Battery control device, control method, control system and electric vehicle |
| CN105207315A (en) * | 2015-10-28 | 2015-12-30 | 东莞酷派软件技术有限公司 | Charging temperature compensation method and device |
| WO2016188070A1 (en) * | 2015-05-28 | 2016-12-01 | 中兴通讯股份有限公司 | Temperature control method, device, terminal and storage medium |
| CN106608195A (en) * | 2015-10-23 | 2017-05-03 | 北汽福田汽车股份有限公司 | Electric vehicle and battery heating method and system thereof |
| CN108470965A (en) * | 2018-05-08 | 2018-08-31 | 上海移为通信技术股份有限公司 | The system for improving battery performance in low temperature |
| CN108493520A (en) * | 2018-04-09 | 2018-09-04 | 江西恒动新能源有限公司 | A kind of heating means of lithium-ion power battery system |
| CN110635183A (en) * | 2019-09-23 | 2019-12-31 | 骆驼集团武汉光谷研发中心有限公司 | Power battery system and charging method for low-temperature charging optimized heating strategy |
| CN113178910A (en) * | 2021-04-26 | 2021-07-27 | 深圳市优必选科技股份有限公司 | Battery charging method, device, terminal and computer readable storage medium |
| CN114400390A (en) * | 2022-02-16 | 2022-04-26 | 上海汽车集团股份有限公司 | Vehicle low-temperature heating method, device and system and storage medium |
| CN114566739A (en) * | 2022-02-28 | 2022-05-31 | 宁德新能源科技有限公司 | Battery heating method and electronic device |
| CN115347652A (en) * | 2022-10-18 | 2022-11-15 | 江西江铃集团新能源汽车有限公司 | Low-temperature charging optimization method and system for lithium battery and storage medium |
| WO2023207429A1 (en) * | 2022-04-24 | 2023-11-02 | 宁德时代新能源科技股份有限公司 | Heating method and apparatus for traction battery, and electronic device, system and storage medium |
Citations (3)
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|---|---|---|---|---|
| CN1701986A (en) * | 2004-05-26 | 2005-11-30 | 福特环球技术公司 | A vehicle battery temperature control method and system |
| CN101118979A (en) * | 2006-08-04 | 2008-02-06 | 诺基亚公司 | Method and device for charging a battery at elevated temperatures |
| CN201397868Y (en) * | 2009-04-15 | 2010-02-03 | 天津力神电池股份有限公司 | Self-heating device used for lithium ion battery pack |
-
2010
- 2010-11-26 CN CN2010105624643A patent/CN102479982A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1701986A (en) * | 2004-05-26 | 2005-11-30 | 福特环球技术公司 | A vehicle battery temperature control method and system |
| CN101118979A (en) * | 2006-08-04 | 2008-02-06 | 诺基亚公司 | Method and device for charging a battery at elevated temperatures |
| CN201397868Y (en) * | 2009-04-15 | 2010-02-03 | 天津力神电池股份有限公司 | Self-heating device used for lithium ion battery pack |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102856604A (en) * | 2012-10-09 | 2013-01-02 | 惠州市亿能电子有限公司 | Quick charging method based on temperature and charging power |
| CN104813532B (en) * | 2012-11-30 | 2017-08-11 | 索尼公司 | battery control device, control method, control system and electric vehicle |
| CN104813532A (en) * | 2012-11-30 | 2015-07-29 | 索尼公司 | Battery control device, control method, control system and electric vehicle |
| CN103490119A (en) * | 2013-01-23 | 2014-01-01 | 深圳市巨星科技有限公司 | Lithium battery heating mechanism in low-temperature environment |
| WO2014176980A1 (en) * | 2013-04-28 | 2014-11-06 | 华为终端有限公司 | Charging method, device and electronic device |
| CN104124482A (en) * | 2013-04-28 | 2014-10-29 | 华为终端有限公司 | Charging method, charging device and electronic equipment |
| WO2016188070A1 (en) * | 2015-05-28 | 2016-12-01 | 中兴通讯股份有限公司 | Temperature control method, device, terminal and storage medium |
| CN106608195A (en) * | 2015-10-23 | 2017-05-03 | 北汽福田汽车股份有限公司 | Electric vehicle and battery heating method and system thereof |
| CN105207315A (en) * | 2015-10-28 | 2015-12-30 | 东莞酷派软件技术有限公司 | Charging temperature compensation method and device |
| CN105207315B (en) * | 2015-10-28 | 2018-05-15 | 东莞酷派软件技术有限公司 | A kind of charging temperature compensation method and device |
| CN108493520A (en) * | 2018-04-09 | 2018-09-04 | 江西恒动新能源有限公司 | A kind of heating means of lithium-ion power battery system |
| CN108470965A (en) * | 2018-05-08 | 2018-08-31 | 上海移为通信技术股份有限公司 | The system for improving battery performance in low temperature |
| CN110635183A (en) * | 2019-09-23 | 2019-12-31 | 骆驼集团武汉光谷研发中心有限公司 | Power battery system and charging method for low-temperature charging optimized heating strategy |
| CN113178910A (en) * | 2021-04-26 | 2021-07-27 | 深圳市优必选科技股份有限公司 | Battery charging method, device, terminal and computer readable storage medium |
| CN114400390A (en) * | 2022-02-16 | 2022-04-26 | 上海汽车集团股份有限公司 | Vehicle low-temperature heating method, device and system and storage medium |
| CN114566739A (en) * | 2022-02-28 | 2022-05-31 | 宁德新能源科技有限公司 | Battery heating method and electronic device |
| WO2023207429A1 (en) * | 2022-04-24 | 2023-11-02 | 宁德时代新能源科技股份有限公司 | Heating method and apparatus for traction battery, and electronic device, system and storage medium |
| CN115347652A (en) * | 2022-10-18 | 2022-11-15 | 江西江铃集团新能源汽车有限公司 | Low-temperature charging optimization method and system for lithium battery and storage medium |
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Address after: 201612 Shanghai city Songjiang District Xinzhuan Highway No. 518, No. 16 Applicant after: Shanghai Dingyan Intelligent Technology Co., Ltd. Address before: 200235 Shanghai City, Xuhui District Qinzhou Road 100, building 2, room 615 Applicant before: Shanghai Dingyan Intelligent Technology Co., Ltd. |
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Application publication date: 20120530 |