CN102479984A - Battery module capable of reducing waiting time for charging and method for increasing charging security - Google Patents
Battery module capable of reducing waiting time for charging and method for increasing charging security Download PDFInfo
- Publication number
- CN102479984A CN102479984A CN2010105677231A CN201010567723A CN102479984A CN 102479984 A CN102479984 A CN 102479984A CN 2010105677231 A CN2010105677231 A CN 2010105677231A CN 201010567723 A CN201010567723 A CN 201010567723A CN 102479984 A CN102479984 A CN 102479984A
- Authority
- CN
- China
- Prior art keywords
- charging
- charger
- battery
- battery module
- management chip
- 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.)
- Pending
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 invention discloses a charging method for reducing the waiting time for charging and a battery module, the battery module at least comprises a main cell group used for providing the electric energy to load during discharging, a voltage conversion device, an auxiliary electric energy storing device, a battery management chip, wherein a first group control charge and discharge switch as well as a second group control charge and discharge switch are provided to the battery management chip, the first group control charge and discharge switch as well as the second group control charge and discharge switch respectively control the main cell group and the auxiliary electric energy storing device in an independent mode, when the battery module is charged by an external charger, the main cell group and the auxiliary electric energy storing device can be simultaneously charged, when the battery module disconnects the external charger, the auxiliary electric energy storing device is capable of continuously charging to the main cell group through the second group control charge and discharge switch as well as the voltage conversion device which can be taken as an internal charger, such as charging in a constant voltage mode can be carried out.
Description
Technical field
The present invention relates to a kind of battery module, be meant a kind of battery pack and method that can shorten the charging stand-by period especially, and the standard behavior that discharges and recharges discharges and recharges safety with lifting.
Background technology
Surging and shout today of carbon reduction for the global warming effect in oil price, oily electric hybrid vehicle, or electric motor car, electric motor car spread out and so become national governments' favorite to its people of doing one's utmost to expand.Yet as long as involve " electronic " car, they just must have a jumbo battery, perhaps are the battery pack that the battery of a plurality of series and parallels is formed at least.And the electric energy of their internal reservoir unique can be used to charge be exactly borrowing indoor charger or outdoor charging station come to they the charging.Rather than drive generator for electricity generation by the petrol and diesel oil engine through belt or driving mechanism as automobile or diesel vehicle and come battery charge.On the other hand, the battery of electric motor car is again main and unique power source, and their capacitance just can receive car owner's welcome at least about 10 times to 100 times that are notebook computer (capacitance of having only 4AH approximately).Relatively, to the time of charging battery module will be very long, therefore, this often is again one of car owner's main cause of not preferring to use electric motor car.
The positive and negative polarities of charger 120 then face toward the positive and negative electrode charging of the end of battery pack 110, and normally the positive pole of charger 120 is via fuse 117 again, and the positive pole of the end of 115,116 pairs of battery pack 110 of charge and discharge protection switch charges.
CC-CV (decide electric current-Ding voltage) pattern is adopted in the charging of existing general battery module 100 more, and the pattern of promptly deciding electric current with CC earlier is converted to the pattern that CV decides voltage again to battery charge.When please refer to the battery shown in Fig. 2 A and charging, voltage-time and electric current-time chart.Process by seeing CC constant current mode charging among Fig. 2 A can make charging battery module reach 70% capacitance, and the process of CV constant voltage mode then is 30% capacitance to be left by institute charge.Yet it is very many that the required time required with respect to CV constant voltage mode time of CC constant current mode lacks.Therefore, with the time efficiency of charging, apparently, CC decides the pattern of electric current and compares with the CV constant voltage mode, and the former time efficiency is significant high a lot.
Another kind of existing technology please refer to Fig. 2 B, when battery management chip BMU detects the cell voltage of master battery pack 210 method that (the ex. lithium battery is approximately less than 2.5V) adopted when on the low side.Charge with the less electric current (ex.0.1C) of deciding earlier, when voltage is higher than the full charging voltage of setting, just charge with the CC pattern (ex.0.7C) of standard.
Another existing technology; Please refer to Fig. 2 B, in order to charge faster, the electric current of deciding of at the beginning CC pattern charging is adopted with bigger and is decided electric current (ex.1.0C) charging; When cell voltage arrives a certain set point, change and charge by second section CC pattern (ex.0.7C).
No matter above that is a kind of, the charging of CV constant voltage mode all needs for a long time, particularly electric motor car, and the battery of this high power capacity or battery pack, the time of the CV constant voltage mode charging behind the CC constant current mode will be longer.Therefore, how making the charging of battery module more efficient, make each car owner not wait for the long time at charging station, improve charge efficiency, will be a problem important and to be broken through.
In view of this, the present invention will provide a kind of battery module, and it can significantly shorten the electricity stand-by period, can promote the discharge capability of battery module moment and the battery module with higher charge and discharge protecting ability again.
Summary of the invention
The present invention discloses a kind of battery module that reduces the charging stand-by period, comprises a master battery pack at least, in order to when discharging, to load electric energy is provided; One voltage conversion device; One additional storage electrical energy devices; One battery management chip; Battery management chip is provided with first group of control charge and discharge switch and second group control charge and discharge switch respectively master battery pack and additional storage electrical energy devices are carried out independent control; When battery module is charged by an external charger; Master battery pack and additional storage electrical energy devices can be recharged simultaneously; And after battery module and charger disconnection, the additional storage electrical energy devices can continue the master battery pack charging is for example waited the charging of voltage mode as internal charger through second group of control charge and discharge switch and this voltage conversion device.
In addition, additional storage electrical energy devices 230 of the present invention can be via voltage conversion device and master battery pack simultaneously to load discharge, to need the occasion of big electric energy in response to moment.
In addition, battery management chip BMU of the present invention has the ability of the inaccurate problem of active correction external charger output voltage, has further protected master battery pack, increases the safety that discharges and recharges, and has also saved the time of charging.
Can graphicly further be understood through following detailed Description Of The Invention and appended about advantage of the present invention and spirit.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, does not constitute qualification of the present invention.In the accompanying drawings:
Fig. 1 shows existing battery module and charger/load sketch map;
Fig. 2 A shows that existing battery module is many with CV pattern charging after the first CC pattern when being recharged;
Fig. 2 B shows the charging method that existing battery management chip BMU is adopted when the cell voltage that detects master battery pack is on the low side;
Fig. 2 C shows that existing battery management chip BMU can provide charging modes faster;
Fig. 3 shows the sketch map that reduces the battery module of charging stand-by period of the present invention;
After Fig. 4 A showed additional storage electrical energy devices of the present invention externally charger is removed, internal charger carried out CC4, CC5 charging to master battery pack;
After Fig. 4 B showed additional storage electrical energy devices of the present invention externally charger is removed, internal charger carried out CC4, CV2 charging to master battery pack.
Drawing reference numeral:
BMU battery management chip 100,200 battery modules
110,210 master battery pack, 120,220 chargers
115,215,225 charge protection switches, 116,216,226 discharge protection switch
117,217 fuses, 230 additional storage electrical energy devices
240 voltage conversion devices, 150,250 signal buss
Embodiment
For making the object of the invention, technical scheme and advantage clearer, the embodiment of the invention is explained further details below in conjunction with accompanying drawing.At this, illustrative examples of the present invention and explanation thereof are used to explain the present invention, but not as to qualification of the present invention.
Said just like prior art, conventional battery module main element comprises is battery 110 lithium battery, Ni-MH battery or macrocell lead-acid battery for example for example of one group of string and/or parallel connection, or lithium Fe battery or lithia iron phosphorus battery, waits main battery.Another major component is battery management chip BMU.How being recharged of they will pass through the CC-CV stage, and the CV stage then is the most consuming time, and the electric energy that is filled is too late in the CC stage.
The present invention can break through such embarrassed look.Battery module 200 of the present invention is except that above-mentioned main battery 210, and other adds an auxiliary energy storage device 230, claims 230, one voltage conversion devices of sub-energy storage device (voltage converter) 240 again.Sub-energy storage device 230 can be independently sub-battery or electric capacity, super capacitor or the like and so on.In one embodiment, as shown in Figure 3, master battery pack 210 is battery pack 230 of a string and parallelly connected battery, and 230 of sub-energy storage devices are the battery of having only parallel connection.It is convenient that the sketch map of Fig. 3 is merely explanation, not as the restriction of master battery pack and sub-energy storage device, because the present invention goes for that both are identical, perhaps different, for example greater or lesser, do not influence enforcement of the present invention.
In addition; Battery management chip BMU is except overcurrent sensing circuit control (not shown) external fuse 217 of Fig. 1; Pin CO1 and charge protection switch 215; Pin, DO1 control discharge protection switch 216, and other has pin CO2 and charge protection switch 225, and pin DO2 controls discharge protection switch 226.When main battery 210 is recharged device 220 chargings, also be recharged device 220 chargings simultaneously.When master battery pack 110 was discharged, sub-energy storage device 230 also can be discharged simultaneously.More particularly after charger terminal (not shown) pulls away battery module 200, sub-energy storage device 230 can be via independently control pin CO2 and the DO2 control charge and discharge switch 225,226 of matching battery managing chip BMU behind the voltage conversion device 240 raising current potentials.Above-mentioned three's combo architectures continues with charging of CV pattern or the charging of CC pattern main battery 210 just as an internal charger.
Said just like before, the CC pattern is to meet business efficiency most.Therefore, when having added sub-energy storage device 230 and being recharged, simultaneously with the CC pattern charging of peak efficiency with master battery pack 210.On the other hand, sub-energy storage device 230 is that pin CO2 and DO2 by battery management chip BMU independently controls charge and discharge switch 225,226.Therefore, in one embodiment, sub-energy storage device 230 gets into the CV pattern by the CC pattern ahead of time and charges and fill fullly in master battery pack 110 still in CC pattern charging down, and for example, Fig. 3 neutron energy storage device 230 is the less battery pack of capacitance.
When the CC pattern finishes or when proceeding to a degree (sub-energy storage device 230 has filled full or full near filling), just can separate with charger according to one embodiment of the invention battery module 200.For example, the electric motor car that the car owner of electric motor car can drive him ahead of time leaves charging station, does not need to wait for again.In one embodiment; After external charger 220 is removed; The pin CO2 of battery management chip BMU and DO2 can independently control charge and discharge switch 225,226 controls, and are continued master battery pack 210 is charged with CC4, CC5 pattern by sub-energy storage device 230, shown in Fig. 4 A.In another embodiment, continue master battery pack 210 chargings please refer to Fig. 4 B with CC4 pattern and CV2 pattern.
Sub-energy storage device 230 of the present invention is via voltage conversion device 240, and for example be increased to can be to the voltage of master battery pack 110 charging for booster circuit.In addition, by independently controlling pin CO2 and DO2 control charge and discharge switch 225,226, therefore, above-mentioned three's combo architectures is just as an internal charger again.The electric energy that is stored in sub-energy storage device 230 can be by sufficient discharge.Vehicle has suffered in car owner's distance, and master battery pack 210 is still by with in the CV pattern charging, even charging is chronic, also can not delay car owner's time.Because the sub-energy storage device 230 in the battery module of the present invention is just as vehicle-mounted charger.On the other hand, it is accurate that master battery pack 210 is moved higher position to carrying out still can further being recharged after the CC pattern is charged.Compared to the past was not that the overlong time (CV pattern) of charging is exactly a undercharge, got off for a long time material activity in the master battery pack 110 are damaged.The present invention obviously can solve such problem.
Additional storage electrical energy devices 230 of the present invention can be via voltage conversion device 240 and master battery pack 210 simultaneously to load discharge.
Generally speaking, as long as be equipped with battery management chip BMU in the battery module 200, then charger 220 voltage and electric current that what should export provided by battery management chip BMU.Charger 220 is according to these data chargings.The data of battery management chip BMU output also are comparatively reliable for charger 220, and this is because price war has become one of weapon of slapping a defeat on the market, and charger has often just become the object of cutting down cost.High price or premium quality product, the charger of outfit maybe be preferable, and product at a low price, the magnitude of voltage that the charger of outfit is exported is often so not high and comparatively inaccurate with regard to requiring.For example; Battery management chip BMU offer charger 220 critical output voltage be under the 4.2V, therefore charger 220 should export 4.2V, but in fact; Cheap charger 220 outputs are often comparatively inaccurate; For example, charger 220 output 4.2V, but in fact just let the charging of battery module 200 transfer CV pattern more consuming time to 4.1V.Another kind of possible case is the set point 4.2V that charger output 4.3V surpasses battery management chip BMU, and this just makes the management of battery module 200 unsafe leak occur.
Therefore; Under the situation of " OVER "; Traditional battery management chip BMU just often detects the signal of overcharged voltage, if the overcharged voltage signal of unit interval occurs too many time, then battery management chip BMU will send alert news and initiatively entire cell system broken string (initiatively blown fuse 217 or closes the charging and discharging circuit system; Not chargeablely also can not discharge), in order to avoid dangerous worry is arranged.Battery management chip BMU of the present invention can see through holding wire or the signal bus 250 between battery module and the charger, requires external charger 220 to reduce the setting of charging voltage, occurs too much in order to avoid the overcharged voltage signal occurs, to increase the safety of charging.
Under the situation of " UNDER ", the CV of the entering pattern of charger, the electric current that makes the output of battery management chip charger that BMU detects is too small; Therefore; Battery management chip BMU of the present invention can see through the signal bus 250 between battery module and the charger, requires to heighten the setting of charging voltage, and so charger 220 just can be exported higher charging voltage; So that the electric current of charger output strengthens, improve charge efficiency.
Battery management chip BMU of the present invention also can along with integral battery door discharges and recharges the increase of number of times, and require charger 220 to downgrade the setting of charging voltage according to the situation of cell degradation; To increase the safety of charging. in another preferred embodiment, when CC (no matter be CC1, CC2; When CC3) pattern is charged; If the charging interval is oversize, surpass the time of setting, even the battery voltage electrical voltage point of no show additives for overcharge protection still; Battery management chip BMU can directly turn off charge switch 215 and or 225, forbid 200 chargings of 220 pairs of battery modules of charger.
Battery management chip BMU of the present invention also manages charge power (voltage * electric current) in addition; No matter battery is in CC pattern or CV pattern; When charge power surpasses set point, battery management chip BMU can directly turn off charge switch, forbids 220 pairs of charging battery modules of charger.
The present invention has following advantage:
1. though the present invention the is many cost of auxiliary electric energy storage device, the charging stand-by period can obtain significant reduction, therefore, indirect raising the usefulness of battery charge.
2. the employed large-capacity battery pack of electric motor car particularly; The charging stand-by period has only the CC mode phases; But can not damage (vehicle-mounted charger: auxiliary electric energy storage device 230 can to master battery pack 210 charging that continues) to master battery pack; Therefore, in the CV stage behind traditional CC, the charging stand-by period obviously reduces.
3. battery management chip BMU of the present invention has the inaccurate problem of active correction charger output voltage, has further protected master battery pack, has also saved the time of charging.
4. additional storage electrical energy devices 230 of the present invention can be via voltage conversion device 240 and master battery pack 210 simultaneously to load discharge, with the lifting electric current that sparks.
Though the present invention illustrates as above with preferred embodiments, so it is not only to terminate in the foregoing description in order to limit the present invention's spirit with the invention entity.Those skilled in the art are when understanding and utilize other element or mode to produce identical effect easily.Be with, the modification of in not breaking away from spirit of the present invention and category, being done all should be included in the claim scope.
Claims (10)
1. the battery module that can reduce the charging stand-by period is characterized in that, comprises at least:
One master battery pack in order to when discharging, provides electric energy to load;
One voltage conversion device;
One additional storage electrical energy devices;
One battery management chip; Said battery management chip is provided with first group of control charge and discharge switch and second group control charge and discharge switch respectively said master battery pack and said additional storage electrical energy devices are carried out independent control; When said battery module is charged by an external charger; Said master battery pack and said additional storage electrical energy devices are recharged simultaneously; And after said battery module and the disconnection of said charger, said additional storage electrical energy devices can continue said master battery pack charging as internal charger through said second group of control charge and discharge switch and said voltage conversion device.
2. battery module as claimed in claim 1 is characterized in that, described additional storage electrical energy devices comprises and master battery pack homotype or veriform battery or super capacitor mutually.
3. battery module as claimed in claim 1; It is characterized in that; Described battery management chip can be through a signal transmission bus active correction charger rated output voltage so that the voltage precision of charger is as the voltage precision that has used with said battery management chip ad eundem.
4. battery module as claimed in claim 1; It is characterized in that; Said battery module can just break off with said charger after charger carries out CC constant current mode to a predetermined extent, continues said master battery pack is charged and act temporarily as internal charger through said second group of control charge and discharge switch and said voltage conversion device.
5. battery module as claimed in claim 1 is characterized in that, described additional storage electrical energy devices can be via voltage conversion device and said master battery pack simultaneously to load discharge, with the lifting electric current that sparks.
6. a method that reduces the batteries charging stand-by period is characterized in that, said method comprises following steps at least:
One battery module is provided; Said battery module comprises a master battery pack, a voltage conversion device, an additional storage electrical energy devices and a battery management chip; Said battery management chip is provided with first group of control charge and discharge switch and second group control charge and discharge switch respectively said master battery pack and said additional storage electrical energy devices are carried out independent control; Said master battery pack is in order to when discharging, and to load electric energy is provided;
With a charger said battery module is charged, said master battery pack and said additional storage electrical energy devices charge simultaneously during charging;
After breaking off said charger, continue said master battery pack is carried out charging of CV constant voltage mode or the charging of CC constant current mode as internal charger through said second group of control charge and discharge switch and said voltage conversion device.
7. method that reduces the charging battery module stand-by period and promote the charging fail safe is characterized in that said method comprises following steps at least:
One battery module is provided; Said battery module comprises a master battery pack, reaches a battery management chip; Said battery management chip is provided with first group of control charge and discharge switch so that said master battery pack is controlled, and a signal transmission bus connects the controller of said battery management chip to said charger;
Output voltage through the said charger of said battery management chip active correction and electric current are so that when said charger when inaccurate or the unusual or too high charging voltage of exporting of power is too high or too low because of circuit, said battery management chip is able to initiatively require said charger correction.
8. reduction charging battery module stand-by period as claimed in claim 7 and the method for promoting the charging fail safe; It is characterized in that; More comprise when said charger and in the unit interval, warned when exceeding a pre-determined number by said battery management chip when charging voltage inaccurate or that export unusually is too high or too low because of circuit; Initiatively break off charging and discharging circuit, and notify said charger, with the charge closing device.
9. reduction charging battery module stand-by period as claimed in claim 7 and the method for promoting the charging fail safe; It is characterized in that; Said battery management chip is set CC constant current mode or CV constant voltage mode the longest charging interval of charging to said charger, when surpassing the scheduled time, initiatively breaks off charging and discharging circuit; And notify said charger, to close said charger.
10. reduction charging battery module stand-by period as claimed in claim 7 and the method for promoting the charging fail safe; It is characterized in that; Described battery management chip is through increasing the battery charging and discharging number of times that said battery module write down; And initiatively downgrade the setting of charging voltage, to increase the safety of charging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105677231A CN102479984A (en) | 2010-11-30 | 2010-11-30 | Battery module capable of reducing waiting time for charging and method for increasing charging security |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105677231A CN102479984A (en) | 2010-11-30 | 2010-11-30 | Battery module capable of reducing waiting time for charging and method for increasing charging security |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102479984A true CN102479984A (en) | 2012-05-30 |
Family
ID=46092523
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105677231A Pending CN102479984A (en) | 2010-11-30 | 2010-11-30 | Battery module capable of reducing waiting time for charging and method for increasing charging security |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102479984A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05207674A (en) * | 1992-01-27 | 1993-08-13 | Tokyo Electric Co Ltd | Charging circuit |
| CN1211845A (en) * | 1997-09-15 | 1999-03-24 | 本田技研工业株式会社 | Battery charger |
| JP2004172058A (en) * | 2002-11-22 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Battery management system and battery pack |
| CN1897435A (en) * | 2005-07-15 | 2007-01-17 | 崇贸科技股份有限公司 | Power supplier with over-low-voltage protecting system and over-low-voltage protection |
| CN201616692U (en) * | 2010-03-18 | 2010-10-27 | 美商电能动力科技集团公司 | Energy-saving fast charging device |
-
2010
- 2010-11-30 CN CN2010105677231A patent/CN102479984A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05207674A (en) * | 1992-01-27 | 1993-08-13 | Tokyo Electric Co Ltd | Charging circuit |
| CN1211845A (en) * | 1997-09-15 | 1999-03-24 | 本田技研工业株式会社 | Battery charger |
| JP2004172058A (en) * | 2002-11-22 | 2004-06-17 | Matsushita Electric Ind Co Ltd | Battery management system and battery pack |
| CN1897435A (en) * | 2005-07-15 | 2007-01-17 | 崇贸科技股份有限公司 | Power supplier with over-low-voltage protecting system and over-low-voltage protection |
| CN201616692U (en) * | 2010-03-18 | 2010-10-27 | 美商电能动力科技集团公司 | Energy-saving fast charging device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8907616B2 (en) | Hybrid power supply system | |
| US20170264136A1 (en) | Multiple Energy Accumulator System for Motor Vehicle Electrical Systems | |
| US20110181245A1 (en) | Unitized charging and discharging battery management system and programmable battery management module thereof | |
| KR101047831B1 (en) | Safety component by fuse at high voltage battery sensing line | |
| CN110303944B (en) | Electric automobile rapid charging system and method | |
| CN103531861B (en) | Storage battery and motor vehicle | |
| US9754732B2 (en) | Energy storage arrangement | |
| US20120112688A1 (en) | Battery Module with Less Charging Time and Charging Method of the Same | |
| CN102340168A (en) | Portable emergency starting power supply | |
| CN110843530A (en) | Multi-module intelligent driving system of large and medium power electric vehicle and large and medium power electric vehicle thereof | |
| CN102110861A (en) | Method and system for protecting battery | |
| CN105790365A (en) | Electrical system of internal-combustion-engine powered vehicle and power supply method thereof | |
| CN105162225A (en) | External-mix self-reconfigurable supercapacitor battery circuit and quick charge control method | |
| CN109823235A (en) | Battery, super capacitor and fuel cell hybrid accumulator Energy Management System | |
| CN102832667A (en) | Charge-discharge equalizer circuit based on inductive energy storage for series battery pack | |
| CN102810881A (en) | Dual-mode portable vehicle emergency start power supply system | |
| CN103296726A (en) | Battery energy storage module, control method thereof and energy storage power supply system | |
| JP6327046B2 (en) | Power supply system and automobile | |
| KR101187449B1 (en) | two direction regenerative braking control method of electric vehicle with non contact electromagnetic inductive charging | |
| CN101570142B (en) | Control system for novel energy resource environment-friendly energy-saving special traction and loading trolley | |
| CN102479984A (en) | Battery module capable of reducing waiting time for charging and method for increasing charging security | |
| JP2022045843A (en) | Method, rated voltage adjustment device, and power storage device | |
| KR20210049017A (en) | Battery switching device for slow or fast charging | |
| CN206903796U (en) | The internal combustion engine start circuit and device of a kind of transport facility | |
| CN105946585B (en) | A kind of Vehicular power management system and electric vehicle |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120530 |