CN102035263B - Composite battery backup module and power supply method thereof - Google Patents
Composite battery backup module and power supply method thereof Download PDFInfo
- Publication number
- CN102035263B CN102035263B CN2009102356217A CN200910235621A CN102035263B CN 102035263 B CN102035263 B CN 102035263B CN 2009102356217 A CN2009102356217 A CN 2009102356217A CN 200910235621 A CN200910235621 A CN 200910235621A CN 102035263 B CN102035263 B CN 102035263B
- Authority
- CN
- China
- Prior art keywords
- storage unit
- energy
- discharge
- electric energy
- discharge energy
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- 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
The embodiment of the invention discloses a composite battery backup module and a power supply method thereof. The composite battery backup module comprises a slow discharge and energy storage unit, a quick discharge and energy storage unit and a charge unit. The power supply method of the composite battery backup module comprises the following steps of: detecting whether the system is powered off or not; if not, controlling the quick discharge and energy storage unit and the slow discharge and energy storage unit to simultaneously store electric power by the charge unit; and if so, controlling the quick discharge and energy storage unit and the slow discharge and energy storage unit to simultaneously discharge. In the invention, the use of a large-volume and high-cost charge unit is avoided by combining the quick discharge and energy storage unit and the slow discharge and energy storage unit, thereby the BBU (Building Baseband Unit) space is effectively saved, and the cost is reduced.
Description
Technical field
The embodiment of the invention relates to technical field of memory, particularly the method for supplying power to of a kind of composite battery backup module and composite battery backup module.
Background technology
In storage system, usually utilize battery back up module (Battery Backup Unit; Hereinafter to be referred as: BBU) data are carried out power down protection.When system power failure, generally there are two kinds of methods to come the protection system data.A kind of is that BBU directly powers to Installed System Memory, so that internal memory can carry out self-refresh, does not lose in internal memory to guarantee system data; Another kind is that BBU backups to hard disk to the data in the Installed System Memory, comes protected data.
Because the BBU energy storage capacity is limited, therefore, when system detects power down, will turn off all closable equipment and devices, to save as much as possible power consumption.And the time of turning off relevant device is to decide according to the size composition of whole system and the characteristic of equipment, and as a rule, general middle and high end equipment can be at 10 seconds with interior all closable equipment of turning off.System is suitable in the power consumption of the instantaneous power consumption of power down during with not power down; after turning off all closable equipment; the power consumption of system mainly results from and internally deposits into the row power supply or RAM date backup is arrived hard disk, and the power consumption that this power consumption usually can be more instantaneous than power down is little a lot.That is to say, BBU need to bear the power stage of a gradual change.
In realizing process of the present invention, the inventor finds that there are the following problems at least in the prior art: although BBU is mainly used in internally depositing into the row power supply or RAM date backup is arrived hard disk, power stage is less, but, in the moment of system power failure, because equipment is not also turned off mostly, this moment, the power stage of BBU was quite large, therefore, the current limliting amount of the charhing unit among the BBU and discharge cell requires very high.Because the current limliting amount is higher, the volume of charging module and discharge module is larger, and cost is higher, therefore caused the BBU requisite space to increase, and cost improves.
Summary of the invention
The embodiment of the invention provides the method for supplying power to of a kind of composite battery backup module and composite battery backup module, to simplify BBU, saves the space, and reduces cost.
The embodiment of the invention provides a kind of composite battery backup module, comprising:
Slow discharge energy-storage unit is used for storage of electrical energy and discharges electric energy, and described slow discharge energy-storage unit discharged the duration of electric energy greater than 10 minutes;
Fast discharge energy-storage unit, in parallel with described slow discharge energy-storage unit, be used for storage of electrical energy and discharge electric energy, the power that described fast discharge energy-storage unit discharges electric energy be the described slow discharge energy-storage unit power that discharges electric energy N doubly, N is greater than 1 and less than 10 real number, described fast discharge energy-storage unit discharged the duration of electric energy less than 1 minute, and described fast discharge energy-storage unit and described slow discharge energy-storage unit be storage of electrical energy or release electric energy simultaneously;
Charhing unit, with described slow discharge energy-storage unit be connected fast discharge energy-storage unit and be connected respectively, be described slow discharge energy-storage unit and described fast discharge energy-storage unit storage of electrical energy when being used for not cutting off the power supply in system.
The embodiment of the invention provides a kind of method of supplying power to of composite battery backup module, comprising:
Whether detection system cuts off the power supply;
When the system of detecting does not cut off the power supply, control fast discharge energy-storage unit and slow discharge energy-storage unit while storage of electrical energy by charhing unit;
When detecting system cut-off, control fast discharge energy-storage unit and discharge simultaneously electric energy with slow discharge energy-storage unit, so that the N of the power that the power of described fast discharge energy-storage unit release electric energy is described slow discharge energy-storage unit discharges electric energy doubly, N is greater than 1 and less than 10 real number, described fast discharge energy-storage unit discharged the duration of electric energy less than 1 minute, and described slow discharge energy-storage unit discharged the duration of electric energy greater than 10 minutes.
The embodiment of the invention is by providing the method for supplying power to of a kind of composite battery backup module and composite battery backup module, fast discharge energy-storage unit is combined with slow discharge energy-storage unit, avoid using large volume and the high charhing unit of cost, effectively saved the BBU space, and reduced cost.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do one to the accompanying drawing of required use in embodiment or the description of the Prior Art and introduce simply, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of composite battery backup module the first embodiment of the present invention;
Fig. 2 is that the power output of fast discharge energy-storage unit among composite battery backup module the first embodiment of the present invention is schemed over time;
Fig. 3 is that the power output of slow discharge energy-storage unit among composite battery backup module the first embodiment of the present invention is schemed over time;
Fig. 4 is that the power output of composite battery backup module the first embodiment of the present invention is schemed over time;
Fig. 5 is the structural representation of composite battery backup module the second embodiment of the present invention;
Fig. 6 is the flow chart of the method for supplying power to embodiment of composite battery backup module of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and the embodiments, the present invention is further elaborated.Should be appreciated that embodiment described herein only in order to explain the present invention, is not intended to limit the present invention.
Fig. 1 is the structural representation of composite battery backup module the first embodiment of the present invention.As shown in Figure 1, the embodiment of the invention provides a kind of composite battery backup module, comprises slow discharge energy-storage unit 11, fast discharge energy-storage unit 12 and charhing unit 13.Wherein, slow discharge energy-storage unit 11 is used for storage of electrical energy and discharges electric energy, and this slow discharge energy-storage unit 11 discharged the duration of electric energy greater than 10 minutes; Fast discharge energy-storage unit 12 is in parallel with slow discharge energy-storage unit 11, be used for storage of electrical energy and discharge electric energy, the power that this fast discharge energy-storage unit 12 discharges electric energy be slow discharge energy-storage unit 11 power that discharges electric energy N doubly, N is greater than 1 and less than 10 real number, the duration of fast discharge energy-storage unit 12 release electric energy, fast discharge energy-storage unit 12 and slow discharge energy-storage unit 11 be storage of electrical energy or release electric energy simultaneously less than 1 minute; Charhing unit 13 and slow discharge energy-storage unit 11 and be connected discharge energy-storage unit 12 and be connected respectively are slow discharge energy-storage unit 11 when not cutting off the power supply in system and fast discharge energy-storage unit 12 storage of electrical energy.
In embodiments of the present invention, slow discharge energy-storage unit 11 is in parallel with fast discharge energy-storage unit 12, carries out simultaneously storage of electrical energy or discharges electric energy.Fig. 2 is that the power output of fast discharge energy-storage unit among composite battery backup module the first embodiment of the present invention is schemed over time, Fig. 3 is that the power output of slow discharge energy-storage unit among composite battery backup module the first embodiment of the present invention is schemed over time, and Fig. 4 is that the power output of composite battery backup module the first embodiment of the present invention is schemed over time.Such as Fig. 2, Fig. 3 and shown in Figure 4, fast discharge energy-storage unit 12 discharges high-power power, but storage of electrical energy is less, therefore discharges the electric energy time shorter; And slow discharge energy-storage unit 11 discharges the electric energy of smaller power, but storage of electrical energy is more, therefore discharges the electric energy time longer.In the moment of system power failure, because equipment is not also turned off mostly, in the composite battery backup module work simultaneously with fast discharge energy-storage unit 12 in slow discharge energy-storage unit 11 at this moment, discharges electric energy, so that powerful output to be provided.When all closable equipment were all turned off, discharge energy-storage unit 12 release electric energy were finished soon, continue to discharge electric energy by slow discharge energy-storage unit 11, export the internal memory self-refresh or RAM date backup is arrived the required power of hard disk.
The embodiment of the invention combines fast discharge energy-storage unit by a kind of composite battery backup module is provided with slow discharge energy-storage unit, avoid using large volume and the high charhing unit of cost, has effectively saved the BBU space, and has reduced cost.
Fig. 5 is the structural representation of composite battery backup module the second embodiment of the present invention.As shown in Figure 5, on the basis of above-mentioned composite battery backup module the first embodiment, slow discharge energy-storage unit 11 can comprise: battery 51 and discharge subelement 52.Wherein, battery 51 is used for storage of electrical energy; Discharge subelement 52 is connected with battery 51, is used for making when system cut-off battery 51 to discharge electric energy.
Further, the composite battery backup module that provides of the embodiment of the invention can also comprise: control unit 53.This control unit 53 and charhing unit 13, discharge subelement 52 and be connected discharge energy-storage unit 12 and be connected respectively, when being used for not cutting off the power supply in system by charhing unit 13 control fast discharge energy-storage unit 12 and battery 51 storage of electrical energy, when system cut-off, control fast discharge energy-storage unit 12 and discharge electric energy and discharge electric energy by discharge subelement 52 control batteries 51.
Wherein, control unit 53 can comprise: detection sub-unit 54, charging control subelement 55 and control of discharge subelement 56.Wherein, whether detection sub-unit 54 cuts off the power supply for detection of system; When charging control subelement 55 is used for not cutting off the power supply in system by charhing unit 13 control fast discharge energy-storage unit 12 and battery 51 storage of electrical energy; Control of discharge subelement 56 is used for when system cut-off, controls fast discharge energy-storage unit 12 and discharges electric energy, and discharge electric energy by discharge subelement 52 control batteries 51.
In technique scheme, fast discharge energy-storage unit 12 can be super capacitor.Battery 51 can be the general energy-storage batteries such as lithium iron battery or cobalt lithium battery.
In embodiments of the present invention, the battery 51 after the series connection is in parallel with fast discharge energy-storage unit 12 with discharge subelement 52, carries out simultaneously storage of electrical energy and discharges electric energy.When the detection sub-unit 54 in the control unit 53 detected system power failure, battery 51 was worked simultaneously with fast discharge energy-storage unit 12, discharges electric energy, so that powerful output to be provided.When all closable equipment were all turned off, discharge energy-storage unit 12 release electric energy were finished soon, and discharge subelement 52 makes battery 51 continue to discharge electric energy, exports the internal memory self-refresh or RAM date backup is arrived the required power of hard disk.
The embodiment of the invention is by providing a kind of composite battery backup module, super capacitor is combined with battery, utilize control unit control super capacitor and battery storage electric energy, avoid using large volume and high charhing unit and the discharge cell of cost, effectively save the BBU space, and reduced cost.
Fig. 6 is the flow chart of the method for supplying power to embodiment of composite battery backup module of the present invention.As shown in Figure 6, the embodiment of the invention provides a kind of method of supplying power to of composite battery backup module, comprising:
Whether step 601, detection system cut off the power supply, if then execution in step 603, otherwise, execution in step 602;
Step 602, when the system of detecting does not cut off the power supply, control simultaneously storage of electrical energy of fast discharge energy-storage unit and slow discharge energy-storage unit by charhing unit;
Step 603, when detecting system cut-off, control fast discharge energy-storage unit and discharge simultaneously electric energy with slow discharge energy-storage unit, so that the N of the power that the power that fast discharge energy-storage unit discharges electric energy is slow discharge energy-storage unit discharges electric energy doubly, N is greater than 1 and less than 10 real number, the duration that fast discharge energy-storage unit discharges electric energy, slow discharge energy-storage unit discharged the duration of electric energy greater than 10 minutes less than 1 minute.
Above-mentioned steps can be carried out by the composite battery backup module.In embodiments of the present invention, when the composite battery backup module detects system power failure, so that work simultaneously with fast discharge energy-storage unit in slow discharge energy-storage unit wherein, discharge electric energy, so that powerful output to be provided.When all closable equipment were all turned off, fast discharge energy-storage unit release electric energy was finished, and at this moment slow discharge energy-storage unit continues to discharge electric energy, exports the internal memory self-refresh or RAM date backup is arrived the required power of hard disk.
The embodiment of the invention is by providing a kind of method of supplying power to of composite battery backup module, fast discharge energy-storage unit is combined with slow discharge energy-storage unit, so that fast discharge energy-storage unit and slow discharge energy-storage unit discharge electric energy simultaneously, avoid using large volume and the high discharge cell of cost, effectively save the BBU space, and reduced cost.
On the basis of technique scheme, control fast discharge energy-storage unit and can specifically comprise with the step that slow discharge energy-storage unit discharges electric energy simultaneously:
Control fast discharge energy-storage unit and discharge electric energy;
The battery of connecting with this discharge subelement by the control of the discharge subelement in the slow discharge energy-storage unit simultaneously, discharges electric energy.
In embodiments of the present invention, slow discharge energy-storage unit can comprise discharge subelement and the battery that is connected in series, and the control of composite battery backup module can be controlled fast discharge energy-storage unit and discharge electric energy, and discharges electric energy by discharge subelement control battery simultaneously.Fast discharge energy-storage unit is combined with battery, so that fast discharge energy-storage unit and battery discharge electric energy simultaneously, avoid using large volume and the high discharge cell of cost, effectively saved the BBU space, and reduced cost.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement by hardware, but the former is better execution mode in a lot of situation.Based on such understanding, technical scheme of the present invention is to can embodying with the form of software product in whole or in part that background technology contributes, this computer software product can be stored in the storage medium, such as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
It should be noted that at last: above embodiment is only in order to technical scheme of the present invention to be described but not limit it, although with reference to preferred embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that: it still can be made amendment or be equal to replacement technical scheme of the present invention, and these modifications or be equal to replacement and also can not make amended technical scheme break away from the spirit and scope of technical solution of the present invention.
Claims (8)
1. a composite battery backup module is characterized in that, comprising:
Slow discharge energy-storage unit is used for storage of electrical energy and discharges electric energy, and described slow discharge energy-storage unit discharged the duration of electric energy greater than 10 minutes;
Fast discharge energy-storage unit, in parallel with described slow discharge energy-storage unit, be used for storage of electrical energy and discharge electric energy, the power that described fast discharge energy-storage unit discharges electric energy be the described slow discharge energy-storage unit power that discharges electric energy N doubly, N is greater than 1 and less than 10 real number, described fast discharge energy-storage unit discharged the duration of electric energy less than 1 minute, and described fast discharge energy-storage unit and described slow discharge energy-storage unit be storage of electrical energy or release electric energy simultaneously;
Described slow discharge energy-storage unit and described fast discharge energy-storage unit are used for working simultaneously in the moment of system cut-off, discharge electric energy, so that powerful output to be provided;
Described slow discharge energy-storage unit is used for when the closable equipment of described system is all turned off, and continues to discharge electric energy, exports the internal memory self-refresh or RAM date backup is arrived the required power of hard disk;
Charhing unit, with described slow discharge energy-storage unit be connected fast discharge energy-storage unit and be connected respectively, be described slow discharge energy-storage unit and described fast discharge energy-storage unit storage of electrical energy when being used for not cutting off the power supply in system.
2. composite battery backup module according to claim 1 is characterized in that, described slow discharge energy-storage unit comprises:
Battery is used for storage of electrical energy;
The discharge subelement is connected with described battery, is used for making when system cut-off described battery to discharge electric energy.
3. composite battery backup module according to claim 2 is characterized in that, also comprises:
Control unit with described charhing unit, described discharge subelement be connected fast discharge energy-storage unit and be connected respectively, is used for control charhing unit and discharge subelement.
4. composite battery backup module according to claim 3 is characterized in that, described control unit comprises:
Whether detection sub-unit cuts off the power supply for detection of system;
Charging control subelement when being used for not cutting off the power supply in system, is controlled described fast discharge energy-storage unit and described battery storage electric energy by described charhing unit;
The control of discharge subelement is used for when system cut-off, controls described fast discharge energy-storage unit and discharges electric energy, and control described battery release electric energy by described discharge subelement.
5. arbitrary described composite battery backup module in 4 according to claim 1 is characterized in that, described fast discharge energy-storage unit is super capacitor.
6. arbitrary described composite battery backup module in 4 according to claim 2 is characterized in that, described battery is lithium iron battery or cobalt lithium battery.
7. the method for supplying power to of a composite battery backup module is characterized in that, comprising:
Whether detection system cuts off the power supply;
When detecting described system and do not cut off the power supply, control simultaneously storage of electrical energy of fast discharge energy-storage unit and slow discharge energy-storage unit by charhing unit;
When detecting described system cut-off, control described fast discharge energy-storage unit and described slow discharge energy-storage unit discharges electric energy simultaneously, so that the N of the power that the power of described fast discharge energy-storage unit release electric energy is described slow discharge energy-storage unit discharges electric energy doubly, N is greater than 1 and less than 10 real number, described fast discharge energy-storage unit discharged the duration of electric energy less than 1 minute, and described slow discharge energy-storage unit discharged the duration of electric energy greater than 10 minutes;
In the moment of described system cut-off, most equipment is not also turned off in the described system, and working simultaneously in described slow discharge energy-storage unit and described fast discharge energy-storage unit, discharges electric energy, so that powerful output to be provided;
When closable equipment was all turned off in described system, described fast discharge energy-storage unit discharges electric energy to be finished, and continues to discharge electric energy by described slow discharge energy-storage unit, exports the internal memory self-refresh or RAM date backup is arrived the required power of hard disk.
8. the method for supplying power to of composite battery backup module according to claim 7 is characterized in that, the fast discharge energy-storage of described control unit and slow discharge energy-storage unit discharge simultaneously electric energy and specifically comprise:
Control described fast discharge energy-storage unit and discharge electric energy;
The battery of connecting with described discharge subelement by the control of the discharge subelement in the described slow discharge energy-storage unit discharges electric energy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102356217A CN102035263B (en) | 2009-09-30 | 2009-09-30 | Composite battery backup module and power supply method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009102356217A CN102035263B (en) | 2009-09-30 | 2009-09-30 | Composite battery backup module and power supply method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102035263A CN102035263A (en) | 2011-04-27 |
| CN102035263B true CN102035263B (en) | 2013-01-23 |
Family
ID=43887763
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009102356217A Active CN102035263B (en) | 2009-09-30 | 2009-09-30 | Composite battery backup module and power supply method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102035263B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601441A (en) * | 2004-10-19 | 2005-03-30 | 宁波三维技术有限公司 | Method and appts for defectless printing bill when abnormal cut off of tax control of cash register |
| CN101097479A (en) * | 2006-06-30 | 2008-01-02 | 精英电脑股份有限公司 | Reserve source of electrical power supply device, desk computer and data protection method thereof |
| CN101183801A (en) * | 2007-12-07 | 2008-05-21 | 杭州华三通信技术有限公司 | Power-off protection method, system and device |
| CN101202439A (en) * | 2007-11-12 | 2008-06-18 | 苏州工业园区新大诚科技发展有限公司 | Data protection circuit in singlechip system power off and method thereof |
-
2009
- 2009-09-30 CN CN2009102356217A patent/CN102035263B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1601441A (en) * | 2004-10-19 | 2005-03-30 | 宁波三维技术有限公司 | Method and appts for defectless printing bill when abnormal cut off of tax control of cash register |
| CN101097479A (en) * | 2006-06-30 | 2008-01-02 | 精英电脑股份有限公司 | Reserve source of electrical power supply device, desk computer and data protection method thereof |
| CN101202439A (en) * | 2007-11-12 | 2008-06-18 | 苏州工业园区新大诚科技发展有限公司 | Data protection circuit in singlechip system power off and method thereof |
| CN101183801A (en) * | 2007-12-07 | 2008-05-21 | 杭州华三通信技术有限公司 | Power-off protection method, system and device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102035263A (en) | 2011-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US20120293002A1 (en) | Method, device, and system for supplying power from batteries | |
| CN102801195B (en) | Vehicle battery protection device and vehicle | |
| CN105207316A (en) | Battery voltage control chip and method | |
| CN101521401A (en) | Intelligent charging device and charging method for mobile phone | |
| CN205231780U (en) | Battery management system and actuating device and electric automobile thereof | |
| CN109980732A (en) | Charging and discharging lithium battery control method and power supply system | |
| CN109428385A (en) | Power transfer system and method | |
| CN110690752B (en) | BMS management method for multi-battery pack parallel control | |
| CN103199607B (en) | The electric power system of a kind of electronic equipment and method of supplying power to | |
| CN107264314A (en) | Battery charge controller, electric vehicle and charge control method | |
| CN112600264B (en) | Control method and system of parallel battery packs, electronic equipment and vehicle | |
| CN107425560A (en) | Low orbit satellite lithium-ions battery group discharge and recharge security control method | |
| CN102035263B (en) | Composite battery backup module and power supply method thereof | |
| WO2016090763A1 (en) | Terminal device battery and method for control of charge and discharge thereof | |
| CN102801197B (en) | Terminal and charge control method thereof | |
| CN105471089B (en) | The method of hybrid power supply device and hybrid power supply | |
| CN101505067B (en) | Hard disk power supply system, hard disk switching board and a method for hard disk power supply | |
| CN111370738A (en) | Self-adaptive load control system and method for fuel cell power generation system | |
| CN101599554B (en) | Battery backup unit and battery backup unit switch control method | |
| EP3258567B1 (en) | Self-loop detection method and apparatus for charging device | |
| CN106926722A (en) | A kind of charging system and fast charge method for quick charge | |
| CN103036299B (en) | Composite power supply method and apparatus | |
| CN104767272B (en) | Control method of continuing a journey and device | |
| CN202111521U (en) | Power redundancy power supply system for automobile lithium battery | |
| CN102217165A (en) | Communication power supply and control method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: HUAWEI DIGITAL TECHNOLOGY (CHENGDU) CO., LTD. Free format text: FORMER NAME: CHENGDU HUAWEI SYMANTEC TECHNOLOGIES CO., LTD. |
|
| CP01 | Change in the name or title of a patent holder |
Address after: 611731 Chengdu high tech Zone, Sichuan, West Park, Qingshui River Patentee after: HUAWEI DIGITAL TECHNOLOGIES (CHENG DU) Co.,Ltd. Address before: 611731 Chengdu high tech Zone, Sichuan, West Park, Qingshui River Patentee before: CHENGDU HUAWEI SYMANTEC TECHNOLOGIES Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220908 Address after: No. 1899 Xiyuan Avenue, high tech Zone (West District), Chengdu, Sichuan 610041 Patentee after: Chengdu Huawei Technologies Co.,Ltd. Address before: 611731 Qingshui River District, Chengdu hi tech Zone, Sichuan, China Patentee before: HUAWEI DIGITAL TECHNOLOGIES (CHENG DU) Co.,Ltd. |