CN111525200A - Charging method of standby battery module and electronic device - Google Patents
Charging method of standby battery module and electronic device Download PDFInfo
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- CN111525200A CN111525200A CN201910104149.7A CN201910104149A CN111525200A CN 111525200 A CN111525200 A CN 111525200A CN 201910104149 A CN201910104149 A CN 201910104149A CN 111525200 A CN111525200 A CN 111525200A
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- charging voltage
- battery module
- charging
- threshold value
- electric quantity
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M10/00—Secondary cells; Manufacture thereof
- H01M10/42—Methods or arrangements for servicing or maintenance of secondary cells or secondary half-cells
- H01M10/44—Methods for charging or discharging
- H01M10/446—Initial charging measures
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0047—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with monitoring or indicating devices or circuits
- H02J7/0048—Detection of remaining charge capacity or state of charge [SOC]
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/00712—Regulation of charging or discharging current or voltage the cycle being controlled or terminated in response to electric parameters
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/007—Regulation of charging or discharging current or voltage
- H02J7/007188—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters
- H02J7/007192—Regulation of charging or discharging current or voltage the charge cycle being controlled or terminated in response to non-electric parameters in response to temperature
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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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
A charging method of a backup battery module and an electronic device are provided, the charging method of the backup battery module comprises the following steps: setting the charging voltage of the standby battery module to be a preset level, and executing a first charging program; the charging voltage of the standby battery module at the preset level is smaller than the saturation value of the charging voltage of the standby battery module; the step of executing the first charging procedure comprises detecting the electric quantity of the standby battery module to determine whether the electric quantity is greater than a first threshold value; the first threshold value is smaller than the saturation capacity of the standby battery module; when the electric quantity of the standby battery module is detected to be larger than a first threshold value, maintaining the charging voltage at a preset level; and when the electric quantity of the standby battery module is not greater than the first threshold value, the charging voltage is increased. By using the charging method of the standby battery module and the electronic device, the standby battery module can be prevented from being in a high-voltage state for a long time, and the service life of the standby battery module is prolonged.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to a charging technology for a battery module, and more particularly, to a charging method for a backup battery module and an electronic device.
[ background of the invention ]
The backup battery refers to a battery of the auxiliary power supply. The backup battery is temporarily used to provide power when the primary power supply is exhausted or stopped. Common applications, such as in the form of battery modules connected in series or in parallel, are in uninterruptible power systems.
The uninterruptible power system is a device that provides a standby power supply to the electronic device continuously under the condition of power grid abnormality (such as power failure) to maintain the normal operation of the electrical appliance. A conventional uninterruptible power system utilizes a built-in battery module as a backup battery of an electronic device to maintain the electronic device in operation when a general power of the electronic device is lost. Generally, the ups system is prepared for a long time to provide power for the electronic device to operate. Moreover, the uninterruptible power system is required to be able to supply power for the operation of the system of the electronic device for more than a certain period of time after 3 to 5 years of installation on the electronic device.
The backup battery may be recharged and reused after being discharged. Backup batteries that are common today are for example: nickel-metal hydride batteries, nickel-cadmium batteries, lead-acid batteries, lithium batteries, and the like. Among them, lithium batteries have a characteristic of high capacity, and thus are commonly used in rechargeable batteries.
However, the maximum charge capacity of the backup battery is affected by time and ambient temperature. In other words, the maximum charge capacity of the backup battery decreases as time increases; and the aging of the standby battery is accelerated under the high-temperature environment, so that the maximum storage capacity of the standby battery is reduced.
[ summary of the invention ]
Although the life of the backup battery can be extended by charging with a reduced charging voltage, the life of the backup battery can be extended only to a limited extent in practical applications. Accordingly, the present invention provides a method for charging a battery module and an electronic device thereof, which can adjust a charging voltage when the amount of electricity is less than a required amount according to the capacity of the battery module, so as to reduce the influence of temperature variation and/or aging along with the installation time, further prolong the battery life and maintain the temporary power supply time of the system.
In one embodiment, a charging method sets a charging voltage of a backup battery module to a preset level and executes a first charging procedure. And the charging voltage of the preset level is less than the charging voltage saturation value of the standby battery module. The step of executing the first charging procedure comprises detecting the electric quantity of the standby battery module to determine whether the electric quantity is larger than a first threshold value. The first threshold value is smaller than the saturation capacity of the standby battery module. When the electric quantity is greater than a first threshold value, maintaining the charging voltage at a preset level; and when the electric quantity is not larger than the first threshold value, the charging voltage is increased.
In one embodiment, an electronic device includes a backup battery module, a charging module, and a processing module. The charging module charges the standby battery module with a charging voltage. The processing module sets the charging voltage to be a preset grade and executes a first charging program. And the charging voltage of the preset level is less than the charging voltage saturation value of the standby battery module. The first charging process includes detecting the power of the backup battery module to determine whether the power is greater than a first threshold. The first threshold value is smaller than the saturation capacity of the standby battery module. When the electric quantity is greater than a first threshold value, maintaining the charging voltage at a preset level; and when the electric quantity is not larger than the first threshold value, the charging voltage is increased.
[ description of the drawings ]
Fig. 1 is a schematic block diagram of an electronic device according to an embodiment of the invention.
Fig. 2 is a schematic flow chart illustrating a charging method of a backup battery module according to an embodiment of the invention.
Fig. 3 is a flowchart illustrating a charging method with a first time limit for installation time according to an embodiment of the invention.
Fig. 4 is a flowchart illustrating a charging method with a second time limit for installation time according to an embodiment of the invention.
[ detailed description ] embodiments
Referring to fig. 1, in some embodiments, the electronic device 100 includes a battery backup module 110, a charging device 120, and a processing module 130. The backup battery module 110 is coupled to the charging module 120 and the processing module 130. The charging module 120 is coupled to the backup battery module 110 and the processing module 130. The processing module 130 is coupled to the backup battery module 110 and the charging device 120.
In some embodiments, the battery backup module 110 may be formed of a plurality of battery cells. In some embodiments, the backup battery module 110 may be a series or parallel connection of lithium batteries, or other suitable types of rechargeable battery modules.
In some implementations, the first threshold, the second threshold, and the amount of adjustment of the charging voltage are dependent on an aging curve of the battery backup module 110.
In some embodiments, the battery aging curve can be derived from repeated experimental tests.
In some embodiments, the battery aging curve may be provided by the battery supplier with the relevant values.
In some embodiments, the amount of power of the backup battery module 110 may be a full charge capacity (FCC, hereinafter referred to as a power).
In some embodiments, the battery backup module 110 is used to provide backup power to a system, and the first threshold depends on the required power consumption and the required temporary power supply hours of the system. In some embodiments, when the backup battery module 110 is not enough to maintain the system demand time, and the processing module 130 detects that the amount of power of the backup battery module 110 is complete, the charging device 120 charges the backup battery module 110 with an adjusted charging voltage, wherein the charging voltage is less than or equal to a saturation value of the charging voltage of the backup battery module 110.
Please refer to fig. 1 to 4. In some implementations, the electronic device 100 can extend the battery life of the battery backup module 110 according to the charging method of any of the embodiments.
Please refer to fig. 1 and fig. 2. In some embodiments, the electronic device 100 sets the preset level of the charging voltage of the battery backup module 110 with the processing module 130 (step S11). The preset level of the charging voltage is smaller than the charging voltage saturation value of the backup battery module 110. The processing module 130 executes a first charging process (step S12), including detecting the power level of the battery backup module 110 (step S13), to determine whether the power level is greater than a first threshold (step S14). Wherein the first threshold is smaller than the saturation capacity of the backup battery module 110. When the amount of electricity is greater than the first threshold, maintaining the charging voltage at a preset level (step S15); when the amount of electricity is not greater than the first threshold, the charging voltage is raised (step S16).
In some embodiments, the backup battery module 100 with the type UR18560AY has a saturation charging voltage of 8.4V, which is formed by connecting two lithium batteries in series. The backup battery module 100 can be built in the electronic device 100 for use as a backup power source, and the electronic device 100 can be connected to an electrical appliance as an uninterruptible power system. The electronic device 100 sets the charging voltage of the backup battery module 110 to 8.2V by the processing module 130 (i.e., step S11), and when the charging voltage is 8.2V, the battery capacity is greater than 14000mAh (milliamp hour). However, the battery capacity of the backup battery module 100 is not always maintained at 14000mAh as the backup power source, so the first threshold value may be set to 12350mAh, and the second threshold value may be set to 12850mAh as the detection criteria of the processing module 130.
For example, the power required by the electric appliance is 3.7W (watt), and the temporarily required supply hours when the grid is abnormal is 24 hours. On this premise, in order to maintain the temporary supply time of the electrical appliance, the electronic device 100 as the uninterruptible power system uses the processing module 130 to execute the first charging procedure from the first year to the third year of use (i.e., step S12). The first charging process includes detecting the amount of power of the backup battery module 110 (step S13) to determine whether the amount of power is greater than 12350mAh (step S14). When the charge is greater than 12350mAh, maintaining the charging voltage at 8.2V (i.e., step S15); when the charge amount is not greater than 12350mAh, the charging voltage is adjusted to 8.3V (i.e., step S16).
Referring to fig. 3 and 4, the processing module 130 detects the amount of power of the backup battery module 110 under different time limits according to the installation time (i.e., steps S17 and S26), for example, the time limits may be a first time limit, a second time limit, and a third time limit, and are respectively set to three years, one year, and two years.
Referring to fig. 3, in some embodiments of step S15 or step S16, the processing module 130 detects whether the installation time of the battery backup module 110 reaches the first time limit (steps S17-S18). When the installation time reaches the first time limit, a second charging process is performed (step S19), and if the first time limit is not reached, a first charging process is performed (step S12). Performing the second charging process includes detecting the charge of the backup battery module 110 (step S20) to determine whether the charge is greater than the first threshold (step S21) or the second threshold (step S22). If the electric quantity is not greater than the first threshold value, increasing the charging voltage (step S23); if the voltage is greater than the first threshold value but not greater than the second threshold value, maintaining the charging voltage (step S24); if the charge amount is greater than the second threshold, the charging voltage is decreased (step S25), wherein the charging voltage is maintained at the predetermined level when the charging voltage is at the predetermined level.
For example, in the fourth year of the electronic device 100, the processing module 130 detects whether the installation time has reached the first time limit after three years (i.e., steps S17-S18). If the year is less than three, continuing to execute the first charging process (i.e., step S12); if the year is over, the processing module 130 executes the second charging process (i.e., step S19). Performing the second charging process includes detecting whether the charge of the backup battery module 110 (i.e., step S20) is greater than 12350mAh (i.e., step S21) or 12850mAh (i.e., step S22).
In some embodiments following step S15, when the original charging voltage is 8.2V and the charge is not greater than 12350mAh, the charging voltage is adjusted to 8.3V (i.e., step S23); when the charge is greater than 12350mAh but not greater than 12850mAh, maintaining the charging voltage at 8.2V (i.e., step S24); if the charge amount is greater than the second threshold, the charging voltage is maintained at 8.2V (i.e., step S25). In some embodiments following step S16, if the original charging voltage is 8.3V, when the charge is not greater than 12350mAh, the charging voltage is increased to 8.4V (i.e., step S23); when the charge is greater than 12350mAh but not greater than 12850mAh, maintaining the charging voltage at 8.3V (i.e., step S24); if the charge amount is greater than the second threshold, the reduced charging voltage is 8.2V (i.e., step S25).
Referring to fig. 4, in some embodiments of step S23, step S24, or step S25, the processing module 130 detects whether the installation time of the battery backup module 110 reaches the second time limit (steps S26-S27). When the installation time reaches the second time limit, a third charging process is performed (step S28), and if the second time limit is not reached, a second charging process is performed (step S19). Performing the second charging process includes detecting the charge of the backup battery module 110 (step S29) to determine whether the charge is greater than the first threshold (step S30) or the second threshold (step S31). If the charge amount is not greater than the first threshold, increasing the charging voltage (step S32), wherein when the charging voltage is a saturation value, the charging voltage is not increased; if the voltage is greater than the first threshold value but not greater than the second threshold value, maintaining the charging voltage (step S33); if the charge amount is greater than the second threshold, the charging voltage is decreased (step S34).
For example, in the fifth year of the electronic device 100, the processing module 130 detects whether the installation time has reached the second time limit after one year (i.e., steps S26-S27). If not, continuing to execute the second charging process (i.e., step S19); if the year is over, the processing module 130 executes the third charging process (i.e., step S28). Performing the third charging process includes detecting whether the charge of the backup battery module 110 (i.e., step S29) is greater than 12350mAh (i.e., step S30) or 12850mAh (i.e., step S31).
In some embodiments, when the original charging voltage is 8.2V, and the charge capacity is not greater than 12350mAh, the charging voltage is adjusted to 8.3V (i.e., step S32); when the charge is greater than 12350mAh but not greater than 12850mAh, maintaining the charging voltage at 8.2V (i.e., step S33); if the charge amount is greater than the second threshold, the charging voltage is maintained at 8.2V (i.e., step S34). In some embodiments, if the original charging voltage is 8.3V, when the charge is not greater than 12350mAh, the charging voltage is increased to 8.4V (i.e., step S32); when the charge is greater than 12350mAh but not greater than 12850mAh, maintaining the charging voltage at 8.3V (i.e., step S33); if the charge amount is greater than the second threshold, the reduced charging voltage is 8.2V (i.e., step S34). In some embodiments, if the original charging voltage is 8.4V, the charging voltage is maintained at 8.4V when the charge is not greater than 12350mAh (step S32); maintaining the charging voltage at 8.4V when the charge is greater than 12350mAh but not greater than 12850mAh (i.e., step S33)); if the charge amount is greater than the second threshold, the reduced charging voltage is 8.3V (i.e., step S34).
The detection criteria of the processing module 130 are different according to the individual differences or different models of the backup battery modules 110. In another embodiment, the first threshold is 12300mAh and the second threshold is 12800 mAh.
In summary, according to the charging method of the electronic device 100 and the backup battery module 110 in the embodiment of the invention, when the processing module 130 detects that the installation time reaches the set time limit, the first charging procedure, the second charging procedure, or the third charging procedure can be executed to detect the electric quantity of the backup battery module 110 to adjust the charging voltage, so as to prevent the backup battery module 110 from being in a high-voltage state for a long time, and further prolong the service life of the backup battery module 110.
In addition, the shapes, sizes, proportions, and sequence of steps in the processes and procedures of the drawings are merely illustrative, and the position or sequence can be adjusted up and down or performed simultaneously for persons skilled in the art to understand the present invention, without limiting the scope of the present invention.
The technical disclosure of the present invention is described in the above-mentioned preferred embodiments, but the present invention is not limited thereto, and those skilled in the art should understand that the present invention can be modified and modified without departing from the spirit of the present invention, and therefore, the scope of the present invention should be determined by the appended claims.
Claims (10)
1. A method of charging a battery backup module, comprising:
setting the charging voltage of a standby battery module to be a preset level, wherein the charging voltage of the preset level is smaller than the saturation value of the charging voltage of the standby battery module; and
executing a first charging process, comprising:
detecting the electric quantity of the standby battery module to determine whether the electric quantity is greater than a first threshold value, wherein the first threshold value is less than the saturation electric quantity of the standby battery module;
when the electric quantity is larger than the first threshold value, maintaining the charging voltage at a preset level; and
and when the electric quantity is not greater than the first threshold value, increasing the charging voltage.
2. The method of charging a backup battery module according to claim 1, further comprising:
detecting the installation time of the standby battery module;
when the installation time reaches a time limit, executing a second charging program, comprising:
detecting the electric quantity of the standby battery module to determine whether the electric quantity is greater than the first threshold value;
maintaining the charging voltage when the electric quantity is greater than the first threshold value;
when the electric quantity is larger than a second threshold value, the charging voltage is reduced, wherein the second threshold value is larger than the first threshold value; and
and when the electric quantity is not greater than the first threshold value, increasing the charging voltage.
3. The method of claim 1, wherein the backup battery module is configured to provide backup power to a system, and the first threshold is determined by a retention time and a required power consumption of the system.
4. The method of claim 1, wherein the first threshold, the second threshold and the adjustment amount of the charging voltage are determined by an aging curve of the battery backup module.
5. The method of claim 1, wherein the charging voltage is less than or equal to the saturation value of the charging voltage of the backup battery module.
6. An electronic device, comprising:
a backup battery module;
a charging module for charging the backup battery module with a charging voltage; and
a processing module, configured to set the charging voltage to a preset level and execute a first charging procedure, where the charging voltage of the preset level is smaller than a saturation value of the charging voltage of the backup battery module, and the first charging procedure includes:
detecting the electric quantity of the standby battery module to determine whether the electric quantity is greater than a first threshold value, wherein the first threshold value is less than the saturation electric quantity of the standby battery module;
when the electric quantity is larger than the first threshold value, maintaining the charging voltage at a preset level; and
and when the electric quantity is not greater than the first threshold value, increasing the charging voltage.
7. The electronic device of claim 6, wherein the processing module further detects an installation time of the backup battery module, and when the installation time reaches a time limit, the processing module performs a second charging procedure, wherein the second charging procedure comprises:
detecting the electric quantity of the standby battery to determine whether the electric quantity is greater than the first threshold value;
maintaining the charging voltage when the electric quantity is greater than the first threshold value;
when the electric quantity is larger than a second threshold value, the charging voltage is reduced, wherein the second threshold value is larger than the first threshold value; and
and when the electric quantity is not greater than the first threshold value, increasing the charging voltage.
8. The electronic device as claimed in claim 6, wherein the backup battery module is configured to provide backup power to a system, and the first threshold depends on a retention time and a required power consumption of the system.
9. The electronic device of claim 6, wherein the first threshold, the second threshold and the adjustment amount of the charging voltage depend on an aging curve of the battery backup module.
10. The electronic device of claim 6, wherein the charging voltage is less than or equal to the saturation value of the charging voltage of the backup battery module.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910104149.7A CN111525200A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
| CN202110546467.6A CN113451671A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910104149.7A CN111525200A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
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| CN202110546467.6A Division CN113451671A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
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| CN111525200A true CN111525200A (en) | 2020-08-11 |
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| CN201910104149.7A Withdrawn CN111525200A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
| CN202110546467.6A Pending CN113451671A (en) | 2019-02-01 | 2019-02-01 | Charging method of standby battery module and electronic device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410882A (en) * | 2021-05-24 | 2021-09-17 | 中联重科股份有限公司 | Control method, processor, device and pumping equipment for battery |
Family Cites Families (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH1155872A (en) * | 1997-07-30 | 1999-02-26 | Tec Corp | Charging monitor for backup battery |
| JP4432985B2 (en) * | 2007-03-12 | 2010-03-17 | ソニー株式会社 | Battery pack |
| JP5405041B2 (en) * | 2008-04-02 | 2014-02-05 | 株式会社Ｎｔｔファシリティーズ | Lithium ion secondary battery charging system and lithium ion secondary battery charging method |
| CN101630762B (en) * | 2008-07-14 | 2011-12-07 | 宏碁股份有限公司 | Method and device for charging battery |
| US8269641B2 (en) * | 2010-06-07 | 2012-09-18 | Lear Corporation | Vehicle power management system |
| JP5356439B2 (en) * | 2011-03-04 | 2013-12-04 | 古河電気工業株式会社 | Charge control device and charge control method |
| CN202309238U (en) * | 2011-11-04 | 2012-07-04 | 顺达科技股份有限公司 | Energy device |
| CN103730915A (en) * | 2012-10-10 | 2014-04-16 | 国基电子（上海）有限公司 | Charging control method and electronic equipment adopting method |
| JP6239611B2 (en) * | 2013-06-03 | 2017-11-29 | 古河電気工業株式会社 | Charge control device and charge control method |
| JP6054934B2 (en) * | 2014-11-17 | 2016-12-27 | レノボ・シンガポール・プライベート・リミテッド | BACKUP SYSTEM, MANAGEMENT METHOD, AND INFORMATION PROCESSING DEVICE FOR EXTENDING LIFE TIME OF SECONDARY BATTERY |
| CN105703023A (en) * | 2014-11-28 | 2016-06-22 | 奇点新源国际技术开发(北京)有限公司 | Charging-discharging method and apparatus for standby battery of vehicle-mounted terminal |
| CN105262155B (en) * | 2015-09-02 | 2018-07-06 | 广东欧珀移动通信有限公司 | A kind of charging method and device |
| KR102547376B1 (en) * | 2016-03-03 | 2023-06-26 | 삼성전자주식회사 | Electronic apparatus, method for controlling charge and computer-readable recording medium |
| CN108711914B (en) * | 2018-06-21 | 2020-07-21 | 北京新能源汽车股份有限公司 | Storage battery charging control method, device, equipment and vehicle |
-
2019
- 2019-02-01 CN CN201910104149.7A patent/CN111525200A/en not_active Withdrawn
- 2019-02-01 CN CN202110546467.6A patent/CN113451671A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113410882A (en) * | 2021-05-24 | 2021-09-17 | 中联重科股份有限公司 | Control method, processor, device and pumping equipment for battery |
| CN113410882B (en) * | 2021-05-24 | 2022-07-01 | 中联重科股份有限公司 | Control method, processor, device and pumping equipment for battery |
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| CN113451671A (en) | 2021-09-28 |
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Application publication date: 20200811 |