CN108808790A - Ni-MH battery packet charge control guard method based on temperature-compensating - Google Patents
Ni-MH battery packet charge control guard method based on temperature-compensating Download PDFInfo
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- CN108808790A CN108808790A CN201810697092.1A CN201810697092A CN108808790A CN 108808790 A CN108808790 A CN 108808790A CN 201810697092 A CN201810697092 A CN 201810697092A CN 108808790 A CN108808790 A CN 108808790A
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- battery
- soc
- battery module
- present
- battery pack
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- 238000000034 method Methods 0.000 title claims abstract description 31
- 229910018095 Ni-MH Inorganic materials 0.000 title claims abstract description 25
- 229910018477 Ni—MH Inorganic materials 0.000 title claims abstract description 25
- 230000005611 electricity Effects 0.000 claims description 11
- 238000007599 discharging Methods 0.000 claims 1
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000004886 process control Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
Classifications
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- H02J7/0026—
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- H02J7/0091—
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The Ni-MH battery packet charge control guard method based on temperature-compensating that the present invention provides a kind of first obtaining several present battery module temperatures and determines the maximum temperature Tmax of present battery module, calculates the battery pack stagnation pressure overvoltage threshold U under Tmax in real time0With battery module voltages threshold value U1, obtain the present battery module voltage of each battery module in real time later and find out the maximum value U of present battery module voltagemol, and the charged holding SOC of present battery packet is calculated, successively by UmolWith U1, present battery packet stagnation pressure U and U0, Tmax and battery module maximum temperature threshold value T0And the SOC and charged holding threshold value SOC of battery pack highest0Size comparison is carried out, corresponding step is carried out according to comparison result, until the relay of control battery pack charge circuit disconnects, battery pack charging terminates.The method of the present invention, simple possible, it is ensured that battery pack at high temperature using will not overcharge, use can be full of under low temperature, it is normal to ensure that battery pack uses.
Description
Technical field
The present invention relates to technical field of nickel, more particularly to a kind of Ni-MH battery packet charging control based on temperature-compensating
Guard method processed.
Background technology
Ni-MH battery has the characteristics that long-life, pollution-free, high safety and wide temperature use as a kind of secondary cell,
The special dimensions such as energy satisfaction is high to security requirement, width temperature uses, such as aircraft, track, pleasure-boat, bus.By multiple ni-mh lists
Body battery is serially connected to form battery module, can be serially connected multiple battery modules to form battery pack as needed later, system
At battery pack use production institute in corresponding.But since the single battery quantity in battery pack is more, in high temperature, low temperature ring
It can carry out controlling protection accordingly when charging under border, to meet the needs of battery pack.And the charging to Ni-MH battery packet at present
It is mainly the information such as temperature, voltage, electric current by monitoring battery in real time to control guard method, by comparing real-time monitor value
With the fixed charge cutoff threshold value of battery pack, the relay on-off of battery pack charge circuit is controlled according to comparison result, to
Safety management is carried out to battery pack.However for some special application scenarios, such as aircraft, track, use environment temperature model
It encloses extensively, if using the fixed charge cutoff threshold value of battery pack, the characteristic based on Ni-MH battery will cause low temperature environment battery to fill not
Full, battery is easy to overcharge under hot environment.
Invention content
The present invention is intended to provide a kind of Ni-MH battery packet charge control guard method based on temperature-compensating, method simply may be used
Row, it is ensured that battery pack at high temperature using will not overcharge, use can be full of under low temperature, ensure that battery pack using normal, has
Effect improves battery pack service life.
The present invention is realized by following scheme：
A kind of Ni-MH battery packet charge control guard method based on temperature-compensating, the battery pack include that several are mutual
Concatenated battery module, the battery module include the single battery that several are serially connected, and are carried out according to the following steps：
S1：Several present battery module temperatures are obtained in real time and determine the maximum temperature Tmax of present battery module, meter
Calculate the battery pack stagnation pressure overvoltage threshold U under maximum temperature Tmax0With battery module voltages threshold value U1, step S2 is executed later；
S2：The present battery module voltage of each battery module is obtained in real time and finds out the maximum of present battery module voltage
Value Umol, and the charged holding SOC of present battery packet is calculated according to ampere-hour integral formula, in real time most by present battery module voltage
Big value UmolBattery module voltages threshold value U under the maximum temperature Tmax for the present battery module being calculated with step S11It carries out
Compare, if Umol< U1, then follow the steps S3；If Umol≥U1, then by the charged holding SOC of present battery packet and present battery module
Maximum temperature Tmax under the charged holding SOC of the corresponding battery packs of battery module voltages threshold value U11It is compared, if SOC
< SOC1, then the charged holding SOC of present battery packet is adapted to SOC by force1, step S6 is executed later, if SOC >=SOC1, then directly
It connects and executes step S6；
S3：Present battery packet stagnation pressure U is obtained in real time, the current electricity that present battery packet stagnation pressure U and step S1 are calculated
Battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of pond module0It is compared, if U < U0, then follow the steps S4；If U
≥U0, then follow the steps S6；
S4：In real time by the maximum temperature Tmax and battery module maximum temperature threshold value of the step S1 present battery modules determined
T0It is compared, if Tmax < T0, then follow the steps S5；If Tmax >=T0, then follow the steps S6；
S5：The charged holding SOC of present battery packet that step S2 is calculated in real time and the charged holding threshold of battery pack highest
Value SOC0It is compared, if SOC < SOC0, then follow the steps S1；If SOC >=SOC0, then follow the steps S6；
S6：The relay for controlling battery pack charge circuit disconnects, and battery pack charging terminates.
In the step S1, the battery module voltages threshold value U under the maximum temperature Tmax of battery module1For N × Ucell,
Wherein N is the single battery quantity in battery module, and Ucell is that single battery is full of at the maximum temperature Tmax of battery module
The voltage threshold of electricity, Ucell are calculated by formula (1) and are obtained；Battery pack stagnation pressure overvoltage under the maximum temperature Tmax of battery module
Threshold value U0For M × U1, wherein M is the quantity of battery module in battery pack；
In the step S1, the determination method of the maximum temperature Tmax of present battery module is specially：If getting in real time
Several present battery packet temperature maximum value be less than or equal to 65 DEG C, then the maximum value of present battery packet temperature is determined as working as
The maximum temperature Tmax of preceding battery module；If the maximum value of several present battery packet temperature got in real time is more than 65 DEG C,
The second largest value of present battery packet temperature is then determined as to the maximum temperature Tmax of present battery module.
In the step S2, the charged holding SOC of present battery packet is adapted to SOC by force1Specific method be：It will be current
The charged holding SOC of battery pack is incremented to SOC with certain speedup1.In actual use, speedup can be selected as needed, such as 5%/
Second etc..
In the step S2, the charged ampere-hour integral formula for keeping SOC to calculate of present battery packet is：
Wherein,For battery pack initially charged holding；CNFor battery pack rated capacity；I is battery pack charge and discharge electricity
Stream；η is battery pack efficiency for charge-discharge, and value range is 0.9~0.98；T is battery pack electricity accumulated time.
Further, in the step S4, battery module maximum temperature threshold value T0It is 50~60 DEG C.
Further, in the step S5, the charged holding threshold value SOC of battery pack charging highest0It is 95%~100%.
The charged holding SOC of the corresponding battery packs of battery module voltages threshold value U1 under different temperatures1It can be obtained according to tabling look-up,
And under different temperatures, the battery module voltages threshold value U1 and charged holding SOC of battery pack1Correspondence table, can be according to Ni-MH battery
Characteristic is obtained by a large amount of experimental data.
The Ni-MH battery packet charge control guard method based on temperature-compensating of the present invention, method simple possible, by working as
The maximum value U of preceding battery module voltagesmolWith the battery module voltages threshold value U under the maximum temperature Tmax of present battery module1Greatly
Small comparison, the present battery packet stagnation pressure U and battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of present battery module0Greatly
Small comparison, the maximum temperature Tmax of present battery module and battery pack maximum temperature threshold value T0Size compares, present battery Bao He
Electricity keeps SOC and the charged holding threshold value SOC of battery pack charging highest0Size compares, and multiple guarantor is carried out to the charging of Ni-MH battery packet
Protection mechanism, it is ensured that battery pack at high temperature using will not overcharge, use can be full of under low temperature, ensure battery pack using just
Often, battery pack service life is effectively improved.In the Ni-MH battery packet charge control guard method based on temperature-compensating of the present invention,
The charged holding SOC of present battery packet increases on the basis of ampere-hour integrates is based on the modified method of battery module voltages upper threshold
It is estimated, estimation accuracy is higher than the accuracy of traditional SOC estimation method by about 3%.
Description of the drawings
Fig. 1 is the process control chart of the Ni-MH battery packet charge control guard method based on temperature-compensating in embodiment 1.
Specific implementation mode
The invention will be further described with reference to embodiments, but the invention is not limited in the statements of embodiment.
Embodiment 1
A kind of Ni-MH battery packet charge control guard method based on temperature-compensating, process control chart is as shown in Figure 1, electricity
Chi Bao includes the battery module that several are serially connected, and battery module includes the single battery that several are serially connected, by following
Step carries out：
S1：Several present battery module temperatures are obtained in real time and determine the maximum temperature Tmax of present battery module, meter
Calculate the battery pack stagnation pressure overvoltage threshold U under maximum temperature Tmax0With battery module voltages threshold value U1, step S2 is executed later；
Battery module voltages threshold value U under the maximum temperature Tmax of battery module1It is battery mould for N × Ucell, wherein N
Single battery quantity in the block, Ucell are single battery voltage threshold fully charged at the maximum temperature Tmax of battery module,
Ucell is calculated by formula (1) and is obtained；Battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of battery module0For M × U1,
Wherein M is the quantity of battery module in battery pack；
The determination method of the maximum temperature Tmax of present battery module is specially：If several the current electricity got in real time
The maximum value of pond packet temperature is less than or equal to 65 DEG C, then the maximum value of present battery packet temperature is determined as present battery module most
High-temperature Tmax；If the maximum value of several present battery packet temperature got in real time is more than 65 DEG C, by present battery packet
The second largest value of temperature is determined as the maximum temperature Tmax of present battery module；
S2：The present battery module voltage of each battery module is obtained in real time and finds out the maximum of present battery module voltage
Value Umol, and the charged holding SOC of present battery packet is calculated according to ampere-hour integral formula (2), in real time by present battery module voltage
Maximum value UmolBattery module voltages threshold value U under the maximum temperature Tmax for the present battery module being calculated with step S11Into
Row compares, if Umol< U1, then follow the steps S3；If Umol≥U1, then by the charged holding SOC of present battery packet and present battery mould
The charged holding SOC of the corresponding battery packs of battery module voltages threshold value U1 under the maximum temperature Tmax of block1It is compared, if
SOC < SOC1, then the charged holding SOC of present battery packet is incremented by with the speedup of 5%/second and is adapted to SOC by force1, step is executed later
Rapid S6, if SOC >=SOC1, then step S6 is directly executed；
Wherein,For battery pack initially charged holding；CNFor battery pack rated capacity；I is battery pack charge and discharge electricity
Stream；η is battery pack efficiency for charge-discharge, and value range is 0.9~0.98；T is battery pack electricity accumulated time；
S3：Present battery packet stagnation pressure U is obtained in real time, the current electricity that present battery packet stagnation pressure U and step S1 are calculated
Battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of pond module0It is compared, if U < U0, then follow the steps S4；If U
≥U0, then follow the steps S6；
S4：In real time by the maximum temperature Tmax and battery module maximum temperature threshold value of the step S1 present battery modules determined
T0It is compared, if Tmax < T0, then follow the steps S5；If Tmax >=T0, then follow the steps S6；Wherein, the battery module highest temperature
Spend threshold value T0Value is 50 DEG C；
S5：The charged holding SOC of present battery packet that step S2 is calculated in real time and the charged holding threshold of battery pack highest
Value SOC0It is compared, if SOC < SOC0, then follow the steps S1；If SOC >=SOC0, then follow the steps S6；Wherein, battery pack is filled
The electric charged holding threshold value SOC of highest0Value is 97%；
S6：The relay for controlling battery pack charge circuit disconnects, and battery pack charging terminates.
Embodiment 2
A kind of Ni-MH battery packet charge control guard method based on temperature-compensating, in step and embodiment 1 based on
The step of Ni-MH battery packet charge control guard method of temperature-compensating, is essentially identical, the difference is that：In step S2, when
The preceding charged holding SOC of battery pack is incremented by with the speedup of 3%/second is adapted to SOC by force1；In step S4, battery module maximum temperature
Threshold value T0Value is 60 DEG C；In step S5, the charged holding threshold value SOC of battery pack charging highest0Value is 95%.
Claims (8)
1. a kind of Ni-MH battery packet charge control guard method based on temperature-compensating, the battery pack includes that several are mutually gone here and there
The battery module of connection, the battery module include the single battery that several are serially connected, it is characterised in that：According to the following steps into
Row：
S1：Several present battery module temperatures are obtained in real time and determine the maximum temperature Tmax of present battery module, and calculating should
Battery pack stagnation pressure overvoltage threshold U under maximum temperature Tmax0With battery module voltages threshold value U1, step S2 is executed later；
S2：The present battery module voltage of each battery module is obtained in real time and finds out the maximum value of present battery module voltage
Umol, and the charged holding SOC of present battery packet is calculated according to ampere-hour integral formula, in real time by the maximum of present battery module voltage
Value UmolBattery module voltages threshold value U under the maximum temperature Tmax for the present battery module being calculated with step S11Compared
Compared with if Umol< U1, then follow the steps S3；If Umol≥U1, then by the charged holding SOC of present battery packet and present battery module
The charged holding SOC of the corresponding battery packs of battery module voltages threshold value U1 under maximum temperature Tmax1It is compared, if SOC <
SOC1, then the charged holding SOC of present battery packet is adapted to SOC by force1, step S6 is executed later, if SOC >=SOC1, then directly
Execute step S6；
S3：Present battery packet stagnation pressure U is obtained in real time, the present battery mould that present battery packet stagnation pressure U and step S1 are calculated
Battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of block0It is compared, if U < U0, then follow the steps S4；If U >=U0,
Then follow the steps S6；
S4：In real time by the maximum temperature Tmax of the step S1 present battery modules determined and battery module maximum temperature threshold value T0Into
Row compares, if Tmax < T0, then follow the steps S5；If Tmax >=T0, then follow the steps S6；
S5：The charged holding SOC of present battery packet that step S2 the is calculated in real time and charged holding threshold value SOC of battery pack highest0
It is compared, if SOC < SOC0, then follow the steps S1；If SOC >=SOC0, then follow the steps S6；
S6：The relay for controlling battery pack charge circuit disconnects, and battery pack charging terminates.
2. the Ni-MH battery packet charge control guard method based on temperature-compensating as described in claim 1, it is characterised in that：Institute
It states in step S1, the battery module voltages threshold value U under the maximum temperature Tmax of battery module1It is battery for N × Ucell, wherein N
Mould single battery quantity in the block, Ucell are single battery voltage threshold fully charged at the maximum temperature Tmax of battery module
Value, Ucell are calculated by formula (1) and are obtained；Battery pack stagnation pressure overvoltage threshold U under the maximum temperature Tmax of battery module0For M ×
U1, wherein M is the quantity of battery module in battery pack；
3. the Ni-MH battery packet charge control guard method based on temperature-compensating as described in claim 1, it is characterised in that：Institute
It states in step S1, the determination method of the maximum temperature Tmax of present battery module is specially：If several got in real time are worked as
The maximum value of preceding battery module temperature is less than or equal to 65 DEG C, then the maximum value of present battery packet temperature is determined as present battery mould
The maximum temperature Tmax of block；If the maximum value of several present battery packet temperature got in real time is more than 65 DEG C, will be current
The second largest value of battery pack temperature is determined as the maximum temperature Tmax of present battery module.
4. the Ni-MH battery packet charge control guard method based on temperature-compensating as claimed in claim 3, it is characterised in that：Institute
It states in step S2, the charged holding SOC of present battery packet is adapted to SOC by force1Specific method be：Present battery packet is charged
SOC is kept to be incremented to SOC with certain speedup1。
5. the Ni-MH battery packet charge control guard method based on temperature-compensating as claimed in claim 4, it is characterised in that：Institute
It states in step S2, the charged ampere-hour integral formula for keeping SOC to calculate of present battery packet is：
Wherein,For battery pack initially charged holding；CNFor battery pack rated capacity；I is battery pack charging and discharging currents；η
For battery pack efficiency for charge-discharge, value range is 0.9~0.98；T is battery pack electricity accumulated time.
6. the Ni-MH battery packet charge control guard method based on temperature-compensating as described in Claims 1 to 5 is any, feature
It is：In the step S4, battery module maximum temperature threshold value T0It is 50~60 DEG C.
7. the Ni-MH battery packet charge control guard method based on temperature-compensating as described in Claims 1 to 5 is any, feature
It is：In the step S5, the charged holding threshold value SOC of battery pack charging highest0It is 95%~100%.
8. the Ni-MH battery packet charge control guard method based on temperature-compensating as claimed in claim 6, it is characterised in that：Institute
It states in step S5, the charged holding threshold value SOC of battery pack charging highest0It is 95%~100%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697092.1A CN108808790B (en) | 2018-06-29 | 2018-06-29 | Nickel-hydrogen battery pack charging control protection method based on temperature compensation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810697092.1A CN108808790B (en) | 2018-06-29 | 2018-06-29 | Nickel-hydrogen battery pack charging control protection method based on temperature compensation |
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| Publication Number | Publication Date |
|---|---|
| CN108808790A true CN108808790A (en) | 2018-11-13 |
| CN108808790B CN108808790B (en) | 2021-10-15 |
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ID=64073140
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|---|---|---|---|
| CN201810697092.1A Active CN108808790B (en) | 2018-06-29 | 2018-06-29 | Nickel-hydrogen battery pack charging control protection method based on temperature compensation |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430844A (en) * | 2020-03-05 | 2020-07-17 | 威睿电动汽车技术(宁波)有限公司 | Heat management method and device during battery pack charging and automobile |
| CN114675184A (en) * | 2022-05-27 | 2022-06-28 | 深圳戴普森新能源技术有限公司 | Method and device for calculating discharge remaining time |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100188052A1 (en) * | 2009-01-23 | 2010-07-29 | Asustek Computer Inc | Charge Device |
| CN101872987A (en) * | 2009-04-24 | 2010-10-27 | 通用汽车环球科技运作公司 | Battery charging control method and device |
| CN107769290A (en) * | 2016-08-22 | 2018-03-06 | 中兴通讯股份有限公司 | A kind of charge control method, device, equipment and mobile terminal |
-
2018
- 2018-06-29 CN CN201810697092.1A patent/CN108808790B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100188052A1 (en) * | 2009-01-23 | 2010-07-29 | Asustek Computer Inc | Charge Device |
| CN101872987A (en) * | 2009-04-24 | 2010-10-27 | 通用汽车环球科技运作公司 | Battery charging control method and device |
| CN107769290A (en) * | 2016-08-22 | 2018-03-06 | 中兴通讯股份有限公司 | A kind of charge control method, device, equipment and mobile terminal |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111430844A (en) * | 2020-03-05 | 2020-07-17 | 威睿电动汽车技术(宁波)有限公司 | Heat management method and device during battery pack charging and automobile |
| CN111430844B (en) * | 2020-03-05 | 2023-10-31 | 浙江吉利控股集团有限公司 | Thermal management method and device for battery pack charging and automobile |
| CN114675184A (en) * | 2022-05-27 | 2022-06-28 | 深圳戴普森新能源技术有限公司 | Method and device for calculating discharge remaining time |
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| CN108808790B (en) | 2021-10-15 |
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Effective date of registration: 20210722 Address after: 410100 first floor, building 10, advanced energy storage and energy conservation demonstration Industrial Park, No. 169, Section 2, Renmin East Road, Changsha Economic and Technological Development Zone, Hunan Province Applicant after: NATIONAL ENGINEERING RESEARCH OF ADVANCED ENERGY STORAGE MATERIALS Address before: 410205 No. 348, west slope, Tongzi high tech Development Zone, Hunan, Changsha Applicant before: HUNAN COPOWER EV BATTERY Co.,Ltd. |
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