CN106740180A - A kind of lead-acid battery charging device - Google Patents
A kind of lead-acid battery charging device Download PDFInfo
- Publication number
- CN106740180A CN106740180A CN201611082166.8A CN201611082166A CN106740180A CN 106740180 A CN106740180 A CN 106740180A CN 201611082166 A CN201611082166 A CN 201611082166A CN 106740180 A CN106740180 A CN 106740180A
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- China
- Prior art keywords
- lead
- acid battery
- charging
- charger
- module
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- 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.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L58/00—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles
- B60L58/10—Methods or circuit arrangements for monitoring or controlling batteries or fuel cells, specially adapted for electric vehicles for monitoring or controlling batteries
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L53/00—Methods of charging batteries, specially adapted for electric vehicles; Charging stations or on-board charging equipment therefor; Exchange of energy storage elements in electric vehicles
- B60L53/60—Monitoring or controlling charging stations
- B60L53/66—Data transfer between charging stations and vehicles
- B60L53/665—Methods related to measuring, billing or payment
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/7072—Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
-
- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T90/00—Enabling technologies or technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02T90/10—Technologies relating to charging of electric vehicles
- Y02T90/12—Electric charging stations
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The present invention relates to a kind of lead-acid battery charging device, including charger and the identity recognition device for determining the lead-acid battery information of the lead-acid battery in electric motor car；Charger includes power module, display module, control module and the charging gun for inserting the cradle in electric motor car；Power module provides power supply for charging gun；Power module, display module, charging gun and identity recognition device are connected with control module；The lead-acid battery information that identity recognition device determines is compareed with the battery information database of advance typing in control module, and control module controls charging gun to be charged to lead-acid battery or do not charged.The arrangement achieves the purpose that the lead-acid battery unification of different size is charged, it is easy to be managed collectively and safeguards, and reduce the quantity of charger, reduces construction cost and fund input；Charger is verified by identity recognition device to the battery information of lead-acid battery before charge, it is ensured that charge safety.
Description
Technical field
The invention belongs to charging electric vehicle technical field, and in particular to a kind of lead-acid battery charging device.
Background technology
At present, China's lead-acid accumulator and related electric motor car Industry Quick Development, as global lead-acid storage battery production, disappear
Take and big export country.Lead-acid accumulator specification is numerous in the market, and the disunity such as charging voltage, charging current causes electric motor car
The lead-acid battery of middle different size needs different chargers to be charged.In the more region of the stream of peoples such as airport, market, it is impossible to and
When find the charger matched with electric motor car and charged, reduce Consumer's Experience, and can have that misuse is inappropriate to fill
The potential safety hazard that motor is charged to electric motor car, in order to solve the above technical problems, need to set up more chargers, but compared with
Many chargers are not only not easy to manage and safeguard, and also take up more spatial area, cause fund input big, are constructed into
This height.With the electric motor car using lead-acid battery（The low-speed electronic car such as including fork truck, extraordinary electric motor car, tourist coach）Quantity increase
Plus, need the technical scheme that a kind of lead-acid battery unification is charged badly.
The content of the invention
The present invention provides a kind of lead-acid battery charging device, solves the lead-acid battery needs of different size in the prior art
The problem of different chargers, realizes the purpose that the lead-acid battery unification of different size is charged, and is easy to be managed collectively and safeguards, and subtracts
Lack the quantity of charger, reduce construction cost and fund input；Charger passes through identity recognition device pair before charge
The battery information verification of lead-acid battery, it is ensured that charge safety.
In order to solve the above-mentioned technical problem, the present invention proposes that following technical scheme is solved：
A kind of lead-acid battery charging device, it is characterised in that including charger and for determining the lead-acid battery in electric motor car
The identity recognition device of lead-acid battery information；Charger includes power module, display module, control module and electronic for inserting
The charging gun of the cradle on car；Power module provides power supply for charging gun；Power module, display module, charging gun and identity
Identifying device is connected with control module；The lead-acid battery information that identity recognition device determines and typing in advance in control module
Battery information database is compareed, and control module controls charging gun to be charged to lead-acid battery or do not charged.
Further, the charger also includes frequency read/write, and frequency read/write is communicated to connect with control module, described
Identity recognition device is the special IC-card of charger charging；Lead-acid battery information in frequency read/write reading and writing IC card.
Further, charger is caused to import wrong battery information in order to avoid user takes IC-card by mistake, so as to control
Module controls charging gun to charge with having infringement to lead-acid battery, and the identity recognition device is the plumbic acid installed in electric motor car bottom
Battery identification device, the lead-acid battery information for will have lead-acid battery to be charged is sent to control module.
Used as another alternative of identity recognition device, the identity recognition device is supervised to be provided with for real-time
The monitoring management device of the circuit control panel of the charge parameter of lead-acid battery is surveyed, it can enter row data communication with charger.
In order to meet the charging load of the lead-acid battery of Multiple Type, the power module provides DC voltage and quantity is
Multiple, the voltage range of each power module is 0VDC-200VDC, and charging rated power is 15kW, and maximum charging current is
75A。
Further, in order to remind user whether current charger charges to electric motor car, charger is by identity
After identification checking, charging confirmation is sent, and be easy to user real time inspection charge condition and cost when charging, charged
Display screen, display module control touch-screen display charging confirmation, lead-acid battery charge information and the knot that charges are provided with machine
Calculation information.The interactive operation of user and charger for convenience, the display screen is touch-screen.
Charger also includes loudspeaker and voice broadcast module, and voice broadcast module is communicated to connect and control loudspeaker with control module
Report charging confirmation.
For the ease of being charged to the lead-acid battery in polytype electric motor car, the unification of battery charging inlet uses new state
Mark requires charging inlet, and the charging gun and cradle meet new energy charging GB.
Compared with prior art, the advantages of the present invention are：The plumbic acid electricity determined by identity recognition device
Pond information is compareed with the battery information database of advance typing in control module, and whether verify the charger can be to plumbic acid electricity
Pond is charged, if checked successfully, control module formulates charging strategy and controls charging gun pair according to lead-acid battery information
Lead-acid battery is charged, if verification is unsuccessful, control module control charging gun does not charge to lead-acid battery, realizes
The purpose charged using charging device unification to the lead-acid battery of various different sizes, reduces the quantity of charger, reduces
Area occupied, reduces construction cost and fund input, and be easy to be managed collectively and safeguard；Charger leads to before charge
Cross identity recognition device to verify the lead-acid battery information of lead-acid battery, it is ensured that charging reliability, improve charging security.
Brief description of the drawings
In order to illustrate more clearly about the embodiment of the present invention or technical scheme of the prior art, the present invention will be implemented below
The accompanying drawing to be used needed for example or description of the prior art is made one and is briefly introduced, it should be apparent that, drawings discussed below is this
Some embodiments of invention, for one of ordinary skill in the art, on the premise of not paying creative work, may be used also
Other accompanying drawings are obtained with according to these accompanying drawings.
Fig. 1 is the line principle schematic diagram of lead-acid battery charging device of the invention；
Fig. 2 is the structural representation of lead-acid battery charging device of the invention.
Specific embodiment
To make the purpose, technical scheme and advantage of the embodiment of the present invention clearer, below in conjunction with the embodiment of the present invention
In accompanying drawing, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is
A part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art
The every other embodiment obtained under the premise of creative work is not made, belongs to the scope of protection of the invention.
As depicted in figs. 1 and 2, the present embodiment is related to a kind of lead-acid battery charging device, including charger 10 and for true
Determine the identity recognition device of the lead-acid battery information of lead-acid battery 22 in electric motor car 20；Charger 10 includes power module 1, shows
Show module, control module 2 and the charging gun 4 for inserting the cradle 21 in electric motor car 20；Power module 1 is carried for charging gun 4
Power supply source；Power module 1, display module, charging gun 4 and identity recognition device are connected with control module 2；Identity recognition device
The lead-acid battery information of determination is compareed with the battery information database of advance typing in control module 2, and the control of control module 2 is charged
Rifle 4 charges to lead-acid battery 22 or does not charge.As shown in figure 1, the power supply of charger 10 is by three-phase（A、B、C）Four-wire system power network draws
Enter, inside provides DC voltage by power module 1, in the present embodiment, the inside of charger 10 is provided with using modular layout
Three power modules 1, the voltage range of each power module 1 is 0VDC-200VDC, and charging rated power is 15kW, and maximum is filled
Electric current is 75A, and the wide-range voltage output of power module 1 is applicable the lead-acid battery of current major part specification grade.Root
According to actual demand, in order to meet the charging load of the lead-acid battery 22 of Multiple Type, the power module of varying number can be equipped with
1, realize the charging load of whole station.
Specifically, before charger 10 comes into operation, in advance by the lead-acid battery 22 of the electric motor car 20 of Multiple Type
Lead-acid battery information（For example, battery parameter and the charge parameter such as the cell voltage of lead-acid battery, required electric current, charging curve）Record
Enter into the memory cell of the control module 2 of charger 10, form battery information database.Current lead-acid battery 22 needs to charge
When, the lead-acid battery information of the lead-acid battery 22 is compareed with the battery information database of advance typing, if the lead-acid battery is believed
Breath storage represents that the charger 10 can charge to the lead-acid battery 22 in the database, otherwise cannot be to the lead
Sour battery 22 is charged.Additionally, for the ease of being charged to the lead-acid battery 22 in polytype electric motor car 20, charging gun
4 and the unification of cradle 21 using the charging inlet of new national standard requirement, be applicable new energy charging GB, meet professional standard.This
Embodiment lead-acid battery charging device can charge on the market 80% lead-acid battery, be easy to same management and maintenance, subtract
The Quantity of few charger 10, saves floor space and input cost..
User charges for convenience, as a kind of scheme of identity recognition device, can be swiped the card by charger 10
The lead-acid battery information transmission of the lead-acid battery 22 for charging will be needed to charger 10, frequency read/write is provided with charger 10
（It is not shown）, frequency read/write communicated to connect with control module 2, and the hand-held IC-card of user is swiped the card on frequency read/write, and radio frequency is read
The lead-acid battery information of the lead-acid battery 22 relevant to be charged on device reading and writing IC card is write, by the information transmission to charger 10
Control module 2 and compareed with the battery information data of memory cell in control module 2, if the lead-acid battery information is present in this
In database, illustrate that the charger 10 can charge to the lead-acid battery 22, import corresponding lead-acid battery information, according to what is imported
Lead-acid battery information, control module 2 formulates charging strategy, to be charged to lead-acid battery 22.And can also be by behaviour
The charging application APP being loaded under work on mobile phone or panel computer sends the battery information of lead-acid battery 22 to charger 10,
The battery information to be sent to the control module 22 of charger 10.Or can be by using mobile phone or panel computer barcode scanning
Realize charge function.
In some cases, user takes IC-card by mistake so that the lead-acid battery information of the IC-card of reading actually makes with electric motor car 10
The lead-acid battery information of lead-acid battery 22 is inconsistent, causes charger 10 to export the letter that charges unmatched with lead-acid battery 22
Breath, causes the infringement to lead-acid battery 22；Or the lead-acid battery information of the IC-card for reading is not present in battery information database,
But for still providing for charging.In order to ensure the charging safety to lead-acid battery 22 in these cases, filled as identification
Another reliability scheme put, the battery being provided with for recognizing lead-acid battery 22 in electric motor car 20 in the bottom of electric motor car 20 is believed
The lead-acid battery identifying device 23 of breath, when charging gun 4 inserts cradle 21, lead-acid battery identifying device 23 is by lead-acid battery 22
Battery information send to control module 2, for the battery information database with the advance typing of memory cell in control module 2
Control, if the lead-acid battery information is present in the database, illustrates that the charger 10 can fill to lead-acid battery 22
Electricity, now imports the lead-acid battery information of corresponding electric motor car 20, and according to the lead-acid battery information for importing, control module 2 is formulated and filled
Electric strategy, to be charged to lead-acid battery 22.The battery information database and lead-acid battery identifying device 23 of advance typing
Safety guarantee can be provided to the charging of lead-acid battery 22, it is ensured that the charging reliability of lead-acid battery 22.
Alternatively, identity recognition device can be the circuit for being provided with the charge parameter for real-time monitoring lead-acid battery 22
Control panel（It is not shown）Monitoring management device（It is not shown）, the state-of-charge of real-time monitoring lead-acid battery 22（SOC）, electricity,
The parameter such as temperature and liquid level, when row data communication is entered with charger 10, can fill according to the current of actual lead-acid battery 22
Power information adjusts the charging strategy to lead-acid battery 22, for example, increase electric current, supplement liquid level etc..
Further, after the identity information checking to lead-acid battery 22, charger 10 needs to make to lead-acid battery 22
The validation of information for charging or not charging, and it is easy to user real time inspection charge condition and cost when charging, and filled
Electrically operated control, can be provided with display screen on charger 10, display module is communicated to connect and with control module 2 for controlling to show
Display screen display charging confirmation, lead-acid battery charge information and charging settlement information.Further, it is easy to user and charger
10 carry out man-machine interactive operation, as shown in Fig. 2 display screen is touch-screen 5 in the present embodiment, facilitate user to carry out charging operations.
If user realizes charging using the charging application program of the terminals such as mobile phone or panel computer, in charging complete, can be at this
Terminal shows charging complete and charging settlement information.
Alternatively, charger 10 also includes loudspeaker（It is not shown）With voice broadcast module（It is not shown）, voice broadcast module
Communicated to connect with control module 2 and can for example charge, can not charge for controlling loudspeaker to report, charging complete etc. charge it is true
Recognize information.
The present embodiment lead-acid battery charging device, the lead-acid battery information and control module determined by identity recognition device
The battery information database control of advance typing in 2, verifies whether the charger 10 can charge to the lead-acid battery 22,
If checked successfully, control module 2 formulates charging strategy and controls charging gun 4 to lead-acid battery 22 according to lead-acid battery information
Charged, if verification is unsuccessful, the control charging gun 4 of control module 2 does not charge to lead-acid battery 22, realizes to many
The purpose that the lead-acid battery 22 of different size is charged using charging device unification is planted, the quantity of charger 10 is reduced, reduced
Area occupied, reduces construction cost and fund input；The battery charge information of the lead-acid battery 22 of plurality of specifications, charging knot
Calculation information is integrated, is easy to be managed collectively and safeguards；Charger 10 is before charge by identity recognition device to lead-acid battery
22 lead-acid battery information is verified, it is ensured that charging reliability, improves charging security.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
The present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those within the art that：It still may be used
Modified with to the technical scheme described in foregoing embodiments, or equivalent is carried out to which part technical characteristic；
And these modification or replace, do not make appropriate technical solution essence depart from various embodiments of the present invention technical scheme spirit and
Scope.
Claims (9)
1. a kind of lead-acid battery charging device, it is characterised in that including charger and for determining the lead-acid battery in electric motor car
Lead-acid battery information identity recognition device；Charger includes power module, display module, control module and for inserting electricity
The charging gun of the cradle on motor-car；Power module provides power supply for charging gun；Power module, display module, charging gun and body
Part identifying device is connected with control module；The lead-acid battery information that identity recognition device determines and typing in advance in control module
Battery information database control, control module control charging gun to lead-acid battery charge or do not charge.
2. lead-acid battery charging device according to claim 1, it is characterised in that the charger is also read and write including radio frequency
Device, frequency read/write is communicated to connect with control module, and the identity recognition device is the special IC-card of charger charging；Radio frequency is read
Write the lead-acid battery information in device reading and writing IC card.
3. lead-acid battery charging device according to claim 1, it is characterised in that the identity recognition device be installed in
The lead-acid battery identifying device of electric motor car bottom, for the lead-acid battery information of lead-acid battery to be charged to be sent to control mould
Block.
4. lead-acid battery charging device according to claim 1, it is characterised in that the identity recognition device is to be provided with
For the monitoring management device of the circuit control panel of the charge parameter of real-time monitoring lead-acid battery, it can enter line number with charger
According to communication.
5. the lead-acid battery charging device according to any one of claim 1-4, it is characterised in that the power module is carried
It is multiple for DC voltage and quantity, the voltage range of each power module is 0VDC-200VDC, and charging rated power is
15kW, maximum charging current is 75A.
6. the lead-acid battery charging device according to any one of claim 1-4, it is characterised in that be provided with charger
Display screen, display module control display screen display charging confirmation, lead-acid battery charge information and charging settlement information.
7. lead-acid battery charging device according to claim 6, it is characterised in that the display screen is touch-screen.
8. lead-acid battery charging device according to claim 6, it is characterised in that charger also includes that loudspeaker and voice are broadcast
Report module, voice broadcast module is communicated to connect with control module and control loudspeaker report charging confirmation.
9. the lead-acid battery charging device according to any one of claim 1-4, it is characterised in that the charging gun and fill
Electric seat meets new energy charging GB.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611082166.8A CN106740180A (en) | 2016-11-30 | 2016-11-30 | A kind of lead-acid battery charging device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611082166.8A CN106740180A (en) | 2016-11-30 | 2016-11-30 | A kind of lead-acid battery charging device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106740180A true CN106740180A (en) | 2017-05-31 |
Family
ID=58898268
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611082166.8A Pending CN106740180A (en) | 2016-11-30 | 2016-11-30 | A kind of lead-acid battery charging device |
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| CN (1) | CN106740180A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263494A (en) * | 2018-10-30 | 2019-01-25 | 徐州晶迪电子有限公司 | A kind of electrical bicycle charging method |
| CN109466374A (en) * | 2018-11-30 | 2019-03-15 | 铜陵市优车科技有限公司 | Battery management method and battery management system, vehicle |
| CN109572456A (en) * | 2019-01-25 | 2019-04-05 | 贵州长江汽车有限公司 | A kind of charging system for electric automobile and its charging method |
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| CN104037920A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control system for lead-acid battery |
| CN104037465A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control method for lead-acid battery |
| CN104051808A (en) * | 2014-05-16 | 2014-09-17 | 吴大文 | Charging method for new energy automobile in intelligent charging station |
| CN204706914U (en) * | 2015-06-12 | 2015-10-14 | 天水长城电器成套设备实业有限公司 | Electric automobile Computerized fast charger |
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2016
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104051808A (en) * | 2014-05-16 | 2014-09-17 | 吴大文 | Charging method for new energy automobile in intelligent charging station |
| CN104037920A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control system for lead-acid battery |
| CN104037465A (en) * | 2014-06-24 | 2014-09-10 | 杭州电子科技大学 | Intelligent charge control method for lead-acid battery |
| CN204706914U (en) * | 2015-06-12 | 2015-10-14 | 天水长城电器成套设备实业有限公司 | Electric automobile Computerized fast charger |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109263494A (en) * | 2018-10-30 | 2019-01-25 | 徐州晶迪电子有限公司 | A kind of electrical bicycle charging method |
| CN109466374A (en) * | 2018-11-30 | 2019-03-15 | 铜陵市优车科技有限公司 | Battery management method and battery management system, vehicle |
| CN109572456A (en) * | 2019-01-25 | 2019-04-05 | 贵州长江汽车有限公司 | A kind of charging system for electric automobile and its charging method |
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Application publication date: 20170531 |
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