CN105244976A - Method and device of self-discharge storage - Google Patents

Method and device of self-discharge storage Download PDF

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Publication number
CN105244976A
CN105244976A CN201510781136.5A CN201510781136A CN105244976A CN 105244976 A CN105244976 A CN 105244976A CN 201510781136 A CN201510781136 A CN 201510781136A CN 105244976 A CN105244976 A CN 105244976A
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CN
China
Prior art keywords
voltage
lithium battery
value
magnitude
hours
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Application number
CN201510781136.5A
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Chinese (zh)
Inventor
朱明亮
郭琼
高东毅
金祖胜
黄成龙
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深圳市格瑞普电池有限公司
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Priority to CN201510781136.5A priority Critical patent/CN105244976A/en
Publication of CN105244976A publication Critical patent/CN105244976A/en

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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The present invention is applicable to the battery technology field, and provides a method and device of self-discharge storage. The method of self-discharge storage comprises: electric parameters of a plurality of lithium batteries are acquired; and when the electric parameters are larger than preset values, a preset first time value is waited, and a plurality of lithium batteries is discharged until the electric parameters reach safety values, wherein the preset values are larger than or equal to the safety values. According to the method and device of self-discharge storage provided by the invention, the safe storage of lithium batteries may be realized.

Description

The method that self discharge stores and device
Technical field
The invention belongs to cell art, particularly relate to method and the device of a kind of self discharge storage.
Background technology
Along with the development of electronic technology, unmanned plane industry, Intelligent hardware and its similar new technology industry development are rapid, and wherein a lot of industry all uses high-rate lithium battery.High-rate lithium battery common at present in use, if battery does not use after being full of electricity, or electricity is still sufficient after using, long-time storage does not use afterwards, under more high adverse circumstances of temperature a little, be easy to damage battery, occur the phenomenon that battery bulging is even on fire.After battery uses for a long time simultaneously, each battery core there are differences, if do not discharged in time, can affect performance and the life-span of battery.
Summary of the invention
A kind of method that the object of the embodiment of the present invention is to provide self discharge to store and device, being intended to solve existing lithium battery cannot the problem of safe storage for a long time.
The embodiment of the present invention is achieved in that a kind of method that self discharge stores, for the electric discharge device in parallel with multiple lithium battery; Described method comprises the steps:
Gather the electric parameter of described multiple lithium battery;
When described electric parameter is greater than preset value, wait for the very first time value preset, to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.
Further, when described electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage.
Further, it is characterized in that,
When described first magnitude of voltage is 4.18V, described very first time value is 6 to 12 hours;
When described first magnitude of voltage is 4.1V, described very first time value is 48 hours;
When described first magnitude of voltage is 4.02V, 3.94V, 3.85V, described very first time value is 72 hours.
Further, the very first time value that described wait is preset, to described multiple lithium battery electric discharge until described electric parameter reaches safety value specifically comprises:
Each lithium battery is discharged to the first default magnitude of voltage;
Judge whether the average voltage of described multiple lithium battery exceedes safe voltage;
When the average voltage of described multiple lithium battery exceedes safe voltage, turn down described first magnitude of voltage, return step after waiting for described very first time value and each lithium battery is discharged to the first default magnitude of voltage.
Further, when described electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
Further, it is characterized in that,
When described first dump energy is 95%, described second time value is 6 to 12 hours;
When described first magnitude of voltage is 90%, described second time value is 48 hours;
When described first magnitude of voltage is 80%, 70%, 50%, described second time value is 72 hours.
The present invention also proposes the device that a kind of self discharge stores, in parallel with multiple lithium battery; Described device comprises:
Acquisition module, for gathering the electric parameter of described multiple lithium battery;
Discharge module, for when described electric parameter is greater than preset value, waits for the very first time value preset, and to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.
Further, when described electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage.
Further, it is characterized in that,
When described first magnitude of voltage is 4.18V, described very first time value is 6 to 12 hours;
When described first magnitude of voltage is 4.1V, described very first time value is 48 hours;
When described first magnitude of voltage is 4.02V, 3.94V, 3.85V, described very first time value is 72 hours.
Further, described discharge module comprises:
Self discharge unit, for being discharged to the first default magnitude of voltage by each lithium battery;
Judging unit, for judging whether the average voltage of described multiple lithium battery exceedes safe voltage;
Cycling element, for when the average voltage of described multiple lithium battery exceedes safe voltage, turns down described first magnitude of voltage, returns self discharge unit and each lithium battery is discharged to the first magnitude of voltage after turning down after waiting for described very first time value.
Further, when described electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
Further, it is characterized in that,
When described first dump energy is 95%, described second time value is 6 to 12 hours;
When described first magnitude of voltage is 90%, described second time value is 48 hours;
When described first magnitude of voltage is 80%, 70%, 50%, described second time value is 72 hours.
The embodiment of the present invention is detecting that cell voltage exceedes safe storage voltage; or the dump energy of battery is when exceeding safe electricity; by self discharge algorithm automatic discharging to safe voltage or safe electricity; and do not affect user and use battery, the phenomenon such as on fire protecting battery to there will not be tympanites and fault to cause with this.
Accompanying drawing explanation
Fig. 1 is the flow chart of the method for the self discharge storage that the embodiment of the present invention one provides;
Fig. 2 is the structure chart of electric discharge device in the method for the self discharge storage that the embodiment of the present invention one provides;
Fig. 3 is the structure chart of electric discharge device in the method for the self discharge storage that the embodiment of the present invention one provides;
Fig. 4 is the flow chart of discharge process in the method for the self discharge storage that the embodiment of the present invention one provides;
Fig. 5 is the structure chart of the device of the self discharge storage that the embodiment of the present invention two provides;
Fig. 6 is the structure chart of discharge module in the device of the self discharge storage that the embodiment of the present invention two provides.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein only in order to explain the present invention, be not intended to limit the present invention.
embodiment one
The embodiment of the present invention one proposes a kind of method that self discharge stores, for the electric discharge device in parallel with multiple lithium battery.As shown in Figure 1, the method for the embodiment of the present invention one comprises the steps:
S1, gather the electric parameter of multiple lithium battery, as average voltage, dump energy;
S2, when described electric parameter is greater than preset value, wait for the very first time value preset, to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.In step S2, when electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage; When electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
As shown in Figure 2 and Figure 3, battery pack shown in Fig. 2 is that multiple lithium battery is in series to the electric discharge device of the embodiment of the present invention one, electric discharge device with connect after multiple lithium batteries in parallel.As shown in Figure 3, electric discharge device comprises acquisition module, controller, timer and discharger, because electric discharge device is in parallel with lithium battery, does not therefore affect the use of lithium battery.
For convenience of explanation, the embodiment of the present invention one is described for the average voltage of lithium battery.In step sl, each lithium battery voltage of electric discharge device Real-time Collection, and the average voltage calculating above-mentioned multiple lithium battery.In step s 2, when lithium battery average voltage higher than one preset the first magnitude of voltage time, wait for the very first time value, electric discharge device triggering discharges device discharges to lithium battery.Above-mentioned first magnitude of voltage, very first time value, safe voltage can rule of thumb be arranged, as: safe voltage is 3.85V; When first magnitude of voltage is 4.18V, very first time value is 6 to 12 hours; When first magnitude of voltage is 4.1V, very first time value is 48 hours; When first magnitude of voltage is 4.02V, 3.94V, 3.85V, very first time value is 72 hours, and namely the voltage of lithium battery is more close to safe voltage, and the time of storage is then longer.
Electric discharge device can progressively carry out stage by stage to the electric discharge of lithium battery, as shown in Figure 4, specifically comprises step:
S21, each lithium battery is discharged to the first magnitude of voltage;
S22, judge whether the voltage of multiple lithium battery exceedes safe voltage;
S23, when the voltage of multiple lithium battery exceedes safe voltage, turn down the first magnitude of voltage, and wait for very first time value, then return step S21.In step S23, discharger progressively turns down the first magnitude of voltage, as turned down the first magnitude of voltage according to each 0.08V according to the step-length preset.
With the first magnitude of voltage for 4.18, safe voltage is 3.85V is that example explains above-mentioned discharge process:
First stage: when lithium battery average voltage is greater than 4.18V, wait for 6 to 12 hours, lithium battery is discharged to 4.18V;
Second stage: when lithium battery average voltage is greater than 4.10V, waits for 48 hours, lithium battery is discharged to 4.10V;
Phase III: when lithium battery average voltage is greater than 4.02V, wait for 72 hours, lithium battery is discharged to 4.02V;
Fourth stage: when lithium battery average voltage is greater than 3.94V, waits for 72 hours, lithium battery is discharged to 3.94V;
Five-stage: when lithium battery average voltage is greater than 3.85V, waits for 6 to 12 hours, lithium battery is discharged to 3.85V, terminates electric discharge.
Be dump energy again with electric parameter be example, above-mentioned discharge process be described:
First stage: when the SOC of battery pack is greater than 95%, after static wait 6-12 hours, SOC is discharged to 95%;
Second stage: when the SOC of battery pack is greater than 90%, after the static wait 48 hours time, is discharged to 90% SOC;
Phase III: when the SOC of battery pack is greater than 80%, after the static wait 72 hours time, SOC is discharged to 80%;
Fourth stage: when the SOC of battery pack is greater than 70%, after the static wait 72 hours time, is discharged to 70%V SOC;
Five-stage: when the SOC of battery pack is greater than 50%, after the static wait 72 hours time, is discharged to 50% SOC, terminates electric discharge.
The electric discharge device of the embodiment of the present invention one is by the beginning of metal-oxide-semiconductor controlled discharge and end.
When the embodiment of the present invention one detects that cell voltage exceedes safe storage voltage or dump energy, by self discharge algorithm automatic discharging to storage voltage or dump energy, use the life-span of improving battery when battery when not affecting user.
embodiment two
The embodiment of the present invention two proposes the device that a kind of self discharge stores, and as shown in Figure 5, this device is in parallel with multiple lithium battery, comprising:
Acquisition module 10, for gathering the electric parameter of multiple lithium battery, as average voltage, dump energy;
Discharge module 20, for when described electric parameter is greater than preset value, waits for the very first time value preset, and to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.When electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage; When electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
For convenience of explanation, the embodiment of the present invention one is described for the average voltage of lithium battery.Acquisition module 10 gathers and after calculating the average voltage of multiple lithium battery, when lithium battery average voltage higher than one preset the first magnitude of voltage time, wait for very first time value by discharge module 20, and the electric discharge of triggering to lithium battery.Above-mentioned first magnitude of voltage, very first time value, safe voltage can rule of thumb be arranged, as: safe voltage is 3.85V; When first magnitude of voltage is 4.18V, very first time value is 6 to 12 hours; When first magnitude of voltage is 4.1V, very first time value is 48 hours; When first magnitude of voltage is 4.02V, 3.94V, 3.85V, very first time value is 72 hours, and namely the voltage of lithium battery is more close to safe voltage, and the time of storage is then longer.
The electric discharge of discharge module 20 pairs of lithium batteries can progressively be carried out stage by stage, and as shown in Figure 6, discharge module 20 can specifically comprise:
Self discharge unit 21, for being discharged to the first default magnitude of voltage by each lithium battery;
Judging unit 22, for judging whether the average voltage of described multiple lithium battery exceedes safe voltage;
Cycling element 23, for when the average voltage of multiple lithium battery exceedes safe voltage, turns down the first magnitude of voltage, returns self discharge unit 21 and each lithium battery is discharged to the first magnitude of voltage after turning down after waiting for described very first time value.
Preferably, cycling element 23 progressively turns down the first magnitude of voltage, as turned down the first magnitude of voltage according to each 0.08V according to the step-length preset.
For convenience of explanation, the embodiment of the present invention two is with the first magnitude of voltage for 4.18, and safe voltage is 3.85V is that example makes an explanation:
First stage: when lithium battery average voltage is greater than 4.18V, wait for 6 to 12 hours, lithium battery is discharged to 4.18V;
Second stage: when lithium battery average voltage is greater than 4.10V, waits for 48 hours, lithium battery is discharged to 4.10V;
Phase III: when lithium battery average voltage is greater than 4.02V, wait for 72 hours, lithium battery is discharged to 4.02V;
Fourth stage: when lithium battery average voltage is greater than 3.94V, waits for 72 hours, lithium battery is discharged to 3.94V;
Five-stage: when lithium battery average voltage is greater than 3.85V, waits for 6 to 12 hours, lithium battery is discharged to 3.85V, terminates electric discharge.
Be dump energy again with electric parameter be example, above-mentioned discharge process be described:
First stage: when the SOC of battery pack is greater than 95%, after static wait 6-12 hours, SOC is discharged to 95%;
Second stage: when the SOC of battery pack is greater than 90%, after the static wait 48 hours time, is discharged to 90% SOC;
Phase III: when the SOC of battery pack is greater than 80%, after the static wait 72 hours time, SOC is discharged to 80%;
Fourth stage: when the SOC of battery pack is greater than 70%, after the static wait 72 hours time, is discharged to 70%V SOC;
Five-stage: when the SOC of battery pack is greater than 50%, after the static wait 72 hours time, is discharged to 50% SOC, terminates electric discharge.
The electric discharge device of the embodiment of the present invention two is by the beginning of metal-oxide-semiconductor controlled discharge and end.
The embodiment of the present invention two detect cell voltage exceed safe storage voltage can dump energy time, by self discharge algorithm automatic discharging to storage voltage or dump energy, use the life-span of improving battery when battery when not affecting user.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, all any amendments done within the spirit and principles in the present invention, equivalent replacement and improvement etc., all should be included within protection scope of the present invention.

Claims (12)

1. a method for self discharge storage, for the electric discharge device in parallel with multiple lithium battery; It is characterized in that, described method comprises the steps:
Gather the electric parameter of described multiple lithium battery;
When described electric parameter is greater than preset value, wait for the very first time value preset, to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.
2. the method for claim 1, is characterized in that, when described electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage.
3. method as claimed in claim 2, is characterized in that,
When described first magnitude of voltage is 4.18V, described very first time value is 6 to 12 hours;
When described first magnitude of voltage is 4.1V, described very first time value is 48 hours;
When described first magnitude of voltage is 4.02V, 3.94V, 3.85V, described very first time value is 72 hours.
4. method as claimed in claim 2, is characterized in that, the very first time value that described wait is preset, to described multiple lithium battery electric discharge until described electric parameter reaches safety value specifically comprises:
Each lithium battery is discharged to the first default magnitude of voltage;
Judge whether the average voltage of described multiple lithium battery exceedes safe voltage;
When the average voltage of described multiple lithium battery exceedes safe voltage, turn down described first magnitude of voltage, return step after waiting for described very first time value and each lithium battery is discharged to the first default magnitude of voltage.
5. the method for claim 1, is characterized in that, when described electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
6. method as claimed in claim 5, is characterized in that,
When described first dump energy is 95%, described second time value is 6 to 12 hours;
When described first dump energy is 90%, described second time value is 48 hours;
When described first dump energy is 80%, 70%, 50%, described second time value is 72 hours.
7. a device for self discharge storage, in parallel with multiple lithium battery; It is characterized in that, described device comprises:
Acquisition module, for gathering the electric parameter of described multiple lithium battery;
Discharge module, for when described electric parameter is greater than preset value, waits for the very first time value preset, and to described multiple lithium battery electric discharge until described electric parameter reaches safety value, described preset value is more than or equal to safety value.
8. device as claimed in claim 7, it is characterized in that, when described electric parameter is the average voltage of lithium battery, described preset value is the first magnitude of voltage, and described safety value is safe voltage.
9. device as claimed in claim 8, is characterized in that,
When described first magnitude of voltage is 4.18V, described very first time value is 6 to 12 hours;
When described first magnitude of voltage is 4.1V, described very first time value is 48 hours;
When described first magnitude of voltage is 4.02V, 3.94V, 3.85V, described very first time value is 72 hours.
10. device as claimed in claim 8, it is characterized in that, described discharge module comprises:
Self discharge unit, for being discharged to the first default magnitude of voltage by each lithium battery;
Judging unit, for judging whether the average voltage of described multiple lithium battery exceedes safe voltage;
Cycling element, for when the average voltage of described multiple lithium battery exceedes safe voltage, turns down described first magnitude of voltage, returns self discharge unit and each lithium battery is discharged to the first magnitude of voltage after turning down after waiting for described very first time value.
11. devices as claimed in claim 7, is characterized in that, when described electric parameter is the dump energy of lithium battery, described preset value is the first residual electric quantity, and described safety value is safe electricity.
12. devices as claimed in claim 11, is characterized in that,
When described first dump energy is 95%, described second time value is 6 to 12 hours;
When described first dump energy is 90%, described second time value is 48 hours;
When described first dump energy is 80%, 70%, 50%, described second time value is 72 hours.
CN201510781136.5A 2015-11-14 2015-11-14 Method and device of self-discharge storage CN105244976A (en)

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Cited By (7)

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CN105391118A (en) * 2015-11-14 2016-03-09 深圳市格瑞普电池有限公司 Method and device for one-click discharging
CN105826991A (en) * 2016-06-06 2016-08-03 东莞市巨星电池有限公司 Model airplane battery with recording, storing and self-discharging functions
CN106371023A (en) * 2016-08-16 2017-02-01 林飞 Safe storing apparatus for lithium battery and the storing method
CN106654404A (en) * 2016-10-13 2017-05-10 惠州Tcl移动通信有限公司 Method and device for setting output voltage of battery
CN107170988A (en) * 2017-05-09 2017-09-15 超威电源有限公司 A kind of the lead carbon battery and its keeping method of modified low self-discharge rate
CN108963352A (en) * 2017-05-18 2018-12-07 昊翔电能运动科技(昆山)有限公司 The mistake electric quantity protective method and intelligent battery of intelligent battery
CN109687401A (en) * 2019-01-07 2019-04-26 合肥联宝信息技术有限公司 A kind of method and device for protecting battery

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CN101075667A (en) * 2006-05-16 2007-11-21 有量科技股份有限公司 Lithium-cell protector and its protection
CN101917032A (en) * 2010-07-23 2010-12-15 中兴通讯股份有限公司 Mobile terminal and battery charging method thereof
CN102901932A (en) * 2012-09-24 2013-01-30 合肥国轩高科动力能源有限公司 Process for detecting self-discharge of lithium batteries

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Publication number Priority date Publication date Assignee Title
CN101075667A (en) * 2006-05-16 2007-11-21 有量科技股份有限公司 Lithium-cell protector and its protection
CN101917032A (en) * 2010-07-23 2010-12-15 中兴通讯股份有限公司 Mobile terminal and battery charging method thereof
CN102901932A (en) * 2012-09-24 2013-01-30 合肥国轩高科动力能源有限公司 Process for detecting self-discharge of lithium batteries

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105391118A (en) * 2015-11-14 2016-03-09 深圳市格瑞普电池有限公司 Method and device for one-click discharging
CN105826991A (en) * 2016-06-06 2016-08-03 东莞市巨星电池有限公司 Model airplane battery with recording, storing and self-discharging functions
CN106371023A (en) * 2016-08-16 2017-02-01 林飞 Safe storing apparatus for lithium battery and the storing method
CN106371023B (en) * 2016-08-16 2019-09-24 安徽川马新能源科技有限公司 Lithium battery secure store and storage method
CN106654404A (en) * 2016-10-13 2017-05-10 惠州Tcl移动通信有限公司 Method and device for setting output voltage of battery
CN106654404B (en) * 2016-10-13 2019-04-30 惠州Tcl移动通信有限公司 A kind of method and device that cell output voltage is set
CN107170988A (en) * 2017-05-09 2017-09-15 超威电源有限公司 A kind of the lead carbon battery and its keeping method of modified low self-discharge rate
CN107170988B (en) * 2017-05-09 2020-03-27 超威电源集团有限公司 Modified lead-carbon battery with low self-discharge rate and storage method thereof
CN108963352A (en) * 2017-05-18 2018-12-07 昊翔电能运动科技(昆山)有限公司 The mistake electric quantity protective method and intelligent battery of intelligent battery
CN109687401A (en) * 2019-01-07 2019-04-26 合肥联宝信息技术有限公司 A kind of method and device for protecting battery

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