CN103698711A - Battery pack dual-section detecting system - Google Patents
Battery pack dual-section detecting system Download PDFInfo
- Publication number
- CN103698711A CN103698711A CN201310716575.9A CN201310716575A CN103698711A CN 103698711 A CN103698711 A CN 103698711A CN 201310716575 A CN201310716575 A CN 201310716575A CN 103698711 A CN103698711 A CN 103698711A
- Authority
- CN
- China
- Prior art keywords
- voltage
- battery
- battery pack
- power brick
- formula
- 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
Landscapes
- Secondary Cells (AREA)
Abstract
The invention provides a battery pack dual-section detecting system, comprising a battery pack, an MCU (Microprogrammed Control Unit), a battery voltage acquisition module and a temperature detecting module NTC, wherein the battery pack comprises n batteries, wherein n is a positive integer; in a discharging process, the battery voltage acquisition module performs voltage acquisition by an acquisition mode of the voltage of two sections of batteries, namely, the sections of batteries are combined in pairs, and the combined voltage value of every two sections is obtained; when n is an odd number, after the sections of batteries are combined in pairs, the voltage of the remaining one section of battery multiplies 2, and the product participates in subsequent computation. The battery pack dual-section detecting system is low in hardware cost, few in detecting channels, and small in software expense.
Description
Technical field
The present invention relates to the filled lithium electric system in DC tools field, particularly a kind of power brick binodal detection system.
Background technology
At present the chargeable lithium electricity power brick in DC tools field judges that in discharge process oneself whether full electric mode is to detect single battery information of voltage, but can cause that hardware cost is high, sense channel is many, software overhead is large.
Summary of the invention
Technical matters to be solved: for above problem the invention provides that a kind of hardware cost is low, sense channel is few, the large a kind of binodal of software overhead detects battery pack system.
Technical scheme: in order to overcome the above problems, the invention provides a kind of power brick binodal detection system, comprise: for the electric battery of energy supply, for being responsible for the MCU of the voltage of battery and the management of monitoring temperature, charging and electric discharge, for the cell voltage acquisition module of collection and monitor battery, for detection of battery temperature detection module NTC, described electric battery has n batteries, and n is positive integer; In discharge process, cell voltage acquisition module carries out voltage acquisition with the acquisition mode of double-electricity cell voltage, and single battery carries out combination of two, gathers the magnitude of voltage of every two joint combinations; When n is odd number, after single battery combination of two, the voltage of a remaining single battery is taken advantage of the follow-up calculating of 2 participations.
Described cell voltage acquisition module is used the mode of filtering to carry out the collection of information of voltage, and each magnitude of voltage gathering calculates by following formula:
S output valve
last time=S input value
thisformula 1
Formula 1 only can be performed once in a system powers on the cycle, formula 1 only computing once, no longer computing later;
S output valve
this=(S output valve
last time* N+S input value
this)/N+1
Or S output valve
this=(S output valve
last time* (N-1)+S input value
this)/N formula 2
S input value
thisfor each magnitude of voltage gathering;
By formula 2, obtain S output valve
this, life S output valve
last time=S output valve
thisformula 3
Participate in again the computing of next formula 2;
N represents coefficient, and the span of N is 4---1024, and preferred value is 32.
The cycle of using filtering mode cell voltage state to be carried out to collection and monitor is 50ms-1s, and preferred value is 200ms.
Described collection double-electricity cell voltage; every two batteries voltages being one group detects and monitors; then the magnitude of voltage obtaining by computing formula 1 and formula 2 is passed to adaptive tool, when any Battery pack voltage detecting protected lower than nominal threshold value.
Described electric battery is divided into two groups in physical connection, i.e. the first Battery pack, the second Battery pack;
Described MCU comprises main MCU and time MCU, main MCU is responsible for the voltage of the first Battery pack and the management of monitoring temperature, charging and electric discharge, it is the core component of whole power brick protection PCBA, inferior MCU is responsible for the collection of the second Battery pack voltage and temperature, and the mode by communication passes to main MCU by current information of voltage, temperature information and unifies to process;
Described cell voltage acquisition module comprises the first cell voltage acquisition module for collection and monitor the first Battery pack, for the second cell voltage acquisition module of collection and monitor the second Battery pack;
Described temperature detecting module NTC comprises the first temperature detecting module NTC for detection of the first Battery pack, for detection of the second temperature detecting module NTC of the second Battery pack.
Described a kind of binodal detects battery pack system and also comprises intelligent storage discharge circuit, and intelligent storage discharge circuit comprises the first intelligent storage discharge circuit of making the first Battery pack enter the state of electric discharge, makes the second Battery pack enter the second intelligent storage discharge circuit of the state of electric discharge.
Described a kind of binodal detect battery pack system also comprise be controlled by the 3rd temperature detecting module transistor for detection of filtering battery pack system single battery temperature of main MCU, for detection of the button detection module of key-press status, for the RTC module of timing, for showing the electricity quantity display module of electric weight, communication module for carrying out communication with charger, instrument.
Described a kind of power brick binodal detection system
Also comprise power transfer module for battery high voltage being converted to MCU operating voltage, for start power circuit power starting circuit, power brick cathode output end, power brick cathode output end, carry out the D end of communication with charger, at the Copper Foil fuse between electric battery and power brick cathode output end, be connected with charger for transmitting the T end of power brick temperature information.
Beneficial effect: the present invention uses binodal detection mode, makes the hardware cost of power brick low, sense channel is few, software overhead is little, the unbalanced risk of single battery is little.
Accompanying drawing explanation
Fig. 1 is general frame figure of the present invention.
Fig. 2 is specific embodiment of the invention structural representation.
Embodiment
Below in conjunction with Figure of description, the present invention is described in further detail.
As shown in Fig. 1 to 2, the present embodiment be take battery and is surrounded by 14 batteries as example.
This filtering battery pack system: comprise the electric battery containing 14 batteries, 14 batteries are divided into two groups in physical connection, first group is 1 to 7 batteries: { (1+2) (3+4) (5+6) (7) }, second group is 8 to 14 batteries: { (8+9) (10+11) (12+13) (14) }, cell voltage acquisition module acquisition mode with double-electricity cell voltage in discharge process carries out voltage acquisition, be that single battery carries out combination of two, gather the magnitude of voltage of every two joint combinations; When number of batteries is odd number, after single battery combination of two, the voltage of a remaining single battery is taken advantage of the follow-up calculating of 2 participations, is numbered 7 and 14 battery core voltage and takes advantage of the follow-up calculation and control of 2 participations.
Comprise MCU, MCU comprises main MCU and time MCU, main MCU is responsible for the voltage of the first Battery pack and the management of monitoring temperature, charging and electric discharge, it is the core component of whole power brick protection PCBA, inferior MCU is responsible for the collection of the second Battery pack voltage and temperature, and the mode by communication passes to main MCU by current information of voltage, temperature information and unifies to process; Under charged state, the information that inferior MCU passes to main MCU comprises single-unit ceiling voltage Vmax, single-unit minimum voltage Vmin, battery temperature (NTC); Under discharge condition, the information that inferior MCU passes to main MCU comprises binodal minimum voltage Vdmin, battery temperature (NTC), and the cycle of collection and monitor is 200ms.
Comprise intelligent storage discharge circuit, intelligent storage discharge circuit comprises the first intelligent storage discharge circuit of making the first Battery pack enter the state of electric discharge, makes the second Battery pack enter the second intelligent storage discharge circuit of the state of electric discharge.
Comprise cell voltage acquisition module, cell voltage acquisition module comprises the first cell voltage acquisition module for collection and monitor the first Battery pack, for the second cell voltage acquisition module of collection and monitor the second Battery pack.
Comprise temperature detecting module NTC, temperature detecting module NTC comprises the first temperature detecting module NTC for detection of the first Battery pack, for detection of the second temperature detecting module NTC of the second Battery pack.
Comprise be controlled by the 3rd temperature detecting module transistor for detection of filtering battery pack system single battery temperature of main MCU, for detection of the button detection module of key-press status, for the RTC module of timing, for showing the electricity quantity display module of electric weight, communication module for carrying out communication with charger, instrument.
Comprise power transfer module for battery high voltage being converted to MCU operating voltage, for start power circuit power starting circuit, power brick cathode output end, power brick cathode output end, carry out the D end of communication with charger, at the Copper Foil fuse between electric battery and power brick cathode output end, be connected with charger for transmitting the T end of power brick temperature information.
charging process is as follows:
During 1.1 standby, the about 5v of charger D port output high level, power brick detects D port high level, has recognized charger;
1.2 power brick are plugged after charger, and D end is pulled down to about 4.4V by power brick internal circuit, and charger detects D port voltage decline identification power brick, and charger starts timing, and prepare to receive order;
In 1.3 power brick, single battery voltage detecting mode is as follows:
Cell voltage acquisition module is used the mode of filtering to carry out the collection of information of voltage, and each magnitude of voltage gathering calculates by following formula:
S output valve
last time=S input value
thisformula 1
Formula 1 only can be performed once in a system powers on the cycle, formula 1 only computing once, no longer computing later;
S output valve
this=(S output valve
last time* N+S input value
this)/N+1
Or S output valve
this=(S output valve
last time* (N-1)+S input value
this)/N formula 2
S input value
thisfor each magnitude of voltage gathering, the control in program realizes based on operation result S output valve (this);
By formula 2, obtain S output valve
this, life S output valve
last time=S output valve
thisformula 3
Participate in again the computing of next formula 2;
If N=32, sampled signal obtains S input value for the first time
this=10,
S output valve
last time=S input value
this=10 formula 1
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(10 * 32+10)/(32+1)=10 formula 2
S output valve
last time=S output valve
this=10 formula 3
Sampled signal obtains S input value for the second time
this=9
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(10 * 32+9)/(32+1)=9.970 formula 2
S output valve
last time=S output valve
this=9.970 formula 3
Sampled signal obtains S input value for the third time
this=11
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(9.970* 32+11)/(32+1)=10.001 formula 2
S output valve
last time=S output valve
this=10.001 formula 3
1.4 normal charging conditions:
The voltage status of single battery and the temperature of power brick, in default scope, are controlled charger in the mode of communication command and are charged to power brick;
Single battery minimum voltage Vmin < 2.7V, carries out precharge;
Single battery minimum voltage Vmin >=2.7V, carries out constant-current charge;
Single battery minimum voltage Vmin >=4.15V, carries out constant-voltage charge;
When in constant-voltage charge process, during charging current≤0.1C, charging completes.
1.5 charging abnormality:
The voltage status of single battery and the state of temperature of power brick exceed default scope, and power brick is controlled charger in the mode of communication command and stopped charging, and makes charger show the man-machine interface of corresponding abnormality.
2. discharge process is as follows:
In 2.1 power brick, be connected with adaptive tool;
The state of double-electricity cell voltage and battery temperature in the real-time monitoring battery bag of 2.2 power brick;
Between 2.3 power brick and adaptive tool, by D port, carry out information interaction mechanism, power brick sends information, and adaptive tool receives information;
The every 100ms of 2.4 power brick sends primary information, and information comprises the maximum discharge current that double-electricity cell voltage, battery temperature and the battery of current real-time monitoring allow;
In 2.5 power brick, double-electricity cell voltage detection mode is as follows:
Cell voltage acquisition module is used the mode of filtering to carry out the collection of information of voltage, and each magnitude of voltage gathering calculates by following formula:
S output valve
last time=S input value
thisformula 1
Formula 1 only can be performed once in a system powers on the cycle, formula 1 only computing once, no longer computing later;
S output valve
this=(S output valve
last time* N+S input value
this)/N+1
Or S output valve
this=(S output valve
last time* (N-1)+S input value
this)/N formula 2
S input value
thisfor each magnitude of voltage gathering, the control in program realizes based on operation result S output valve (this);
By formula 2, obtain S output valve
this, life S output valve
last time=S output valve
thisformula 3
Participate in again the computing of next formula 2;
If N=32, sampled signal obtains S input value for the first time
this=10,
S output valve
last time=S input value
this=10 formula 1
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(10 * 32+10)/(32+1)=10 formula 2
S output valve
last time=S output valve
this=10 formula 3
Sampled signal obtains S input value for the second time
this=9
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(10 * 32+9)/(32+1)=9.970 formula 2
S output valve
last time=S output valve
this=9.970 formula 3
Sampled signal obtains S input value for the third time
this=11
S output valve
this=(S output valve
last time* N+S input value
this)/(N+ 1)=(9.970* 32+11)/(32+1)=10.001 formula 2
S output valve
last time=S output valve
this=10.001 formula 3
Described collection double-electricity piezoelectricity is pressed, the voltage status of every two batteries is gathered, and the value gathering is obtained to filtered every binodal magnitude of voltage through formula 1 and formula 2, a pre-value 5.4V of another setting, filtered every binodal battery voltage value and pre-value 5.4V compare, if every binodal battery voltage value is all greater than pre-value 5.4V, the voltage data value that sends to adaptive tool is the value that is greater than 5.4V, if there is any binodal battery voltage value to be not more than pre-threshold voltage 5.4V, the voltage value data that sends to instrument is 5.4V.
The voltage value data that adaptive tool receives is greater than 5.4V, and adaptive tool can normally move, if the voltage data value that adaptive tool receives is 5.4V, adaptive tool stops the operation of motor.
When 2.6 power brick and adaptive tool discharge, there is electric weight and show and battery excess temperature Presentation Function
The minimum binodal voltage of Vd_min() > 6.9V----give a green light, represent that power brick electric weight is sufficient;
The minimum binodal voltage of 5.4V < Vd_min() < 6.9V----send out a warning, represent that power brick electric weight is not enough, but adaptive tool still can make motor operation;
The minimum binodal voltage of Vd_min() < 5.4V----blinking red lamp, represents power brick electric weight wretched insufficiency, and adaptive tool can not be so that motor operation;
70 ℃ of battery temperature >----orange lamp flicker, represents power brick excess Temperature, and adaptive tool can not be so that motor operation.
Embodiment recited above is described the preferred implementation of patent of the present invention; not the design of patent of the present invention and scope are limited; do not departing under the prerequisite of Patent design design of the present invention; various modification and improvement that in this area, common engineering technical personnel make the technical scheme of patent of the present invention; all should fall into the protection domain of patent of the present invention; the technology contents that patent of the present invention is asked for protection, is all documented in claims.
Claims (10)
1. a power brick binodal detection system, comprise: for the electric battery of energy supply, for being responsible for the MCU of the voltage of battery and the management of monitoring temperature, charging and electric discharge, for the cell voltage acquisition module of collection and monitor battery, for detection of battery temperature detection module NTC, described electric battery has n batteries, and n is positive integer; It is characterized in that: in discharge process, cell voltage acquisition module carries out voltage acquisition with the acquisition mode of double-electricity cell voltage, and single battery carries out combination of two, gather the magnitude of voltage of every two joint combinations; When n is odd number, after single battery combination of two, the voltage of a remaining single battery is taken advantage of the follow-up calculating of 2 participations.
2. a kind of power brick binodal detection system according to claim 1, is characterized in that: described cell voltage acquisition module is used the mode of filtering to carry out the collection of information of voltage, and each magnitude of voltage gathering calculates by following formula:
S output valve
last time=S input value
thisformula 1
Formula 1 only can be performed once in a system powers on the cycle, formula 1 only computing once, no longer computing later;
S output valve
this=(S output valve
last time* N+S input value
this)/N+1
Or S output valve
this=(S output valve
last time* (N-1)+S input value
this)/N formula 2
S input value
thisfor each magnitude of voltage gathering;
By formula 2, obtain S output valve
this, life S output valve
last time=S output valve
thisformula 3
Participate in again the computing of next formula 2;
N represents coefficient, and the span of N is 4-1024.
3. a kind of power brick binodal detection system according to claim 2, is characterized in that: the value of described N is 32.
4. a kind of power brick binodal detection system according to claim 2, is characterized in that, the cycle of using filtering mode cell voltage state to be carried out to collection and monitor is 50ms-1s.
5. a kind of power brick binodal detection system according to claim 4, is characterized in that, the cycle of described collection and monitor is 200ms.
6. a kind of power brick binodal detection system according to claim 2; it is characterized in that: described collection double-electricity cell voltage; every two batteries voltages being one group detects and monitors; then the magnitude of voltage obtaining by computing formula 1 and formula 2 is passed to adaptive tool, when any Battery pack voltage detecting protected lower than nominal threshold value.
7. a kind of power brick binodal detection system according to claim 1, is characterized in that: described electric battery is divided into two groups in physical connection, i.e. the first Battery pack, the second Battery pack;
Described MCU comprises main MCU and time MCU, main MCU is responsible for the voltage of the first Battery pack and the management of monitoring temperature, charging and electric discharge, it is the core component of whole power brick protection PCBA, inferior MCU is responsible for the collection of the second Battery pack voltage and temperature, and the mode by communication passes to main MCU by current information of voltage, temperature information and unifies to process;
Described cell voltage acquisition module comprises the first cell voltage acquisition module for collection and monitor the first Battery pack, for the second cell voltage acquisition module of collection and monitor the second Battery pack;
Described temperature detecting module NTC comprises the first temperature detecting module NTC for detection of the first Battery pack, for detection of the second temperature detecting module NTC of the second Battery pack.
8. a kind of power brick binodal detection system according to claim 1, it is characterized in that: also comprise intelligent storage discharge circuit, intelligent storage discharge circuit comprises the first intelligent storage discharge circuit of making the first Battery pack enter the state of electric discharge, makes the second Battery pack enter the second intelligent storage discharge circuit of the state of electric discharge.
9. a kind of power brick binodal detection system according to claim 1, is characterized in that: also comprise be controlled by the 3rd temperature detecting module transistor for detection of filtering battery pack system single battery temperature of main MCU, for detection of the button detection module of key-press status, for the RTC module of timing, for showing the electricity quantity display module of electric weight, communication module for carrying out communication with charger, instrument.
10. a kind of power brick binodal detection system according to claim 1, is characterized in that: also comprise power transfer module for battery high voltage being converted to MCU operating voltage, for start power circuit power starting circuit, power brick cathode output end, power brick cathode output end, carry out the D end of communication with charger, at the Copper Foil fuse between electric battery and power brick cathode output end, be connected with charger for transmitting the T end of power brick temperature information.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716575.9A CN103698711A (en) | 2013-12-23 | 2013-12-23 | Battery pack dual-section detecting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310716575.9A CN103698711A (en) | 2013-12-23 | 2013-12-23 | Battery pack dual-section detecting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103698711A true CN103698711A (en) | 2014-04-02 |
Family
ID=50360305
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310716575.9A Pending CN103698711A (en) | 2013-12-23 | 2013-12-23 | Battery pack dual-section detecting system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103698711A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207290A (en) * | 2015-09-15 | 2015-12-30 | 浙江超威创元实业有限公司 | Parallel connection battery control device and method |
| WO2019120292A1 (en) * | 2017-12-21 | 2019-06-27 | 南京德朔实业有限公司 | Battery pack and method for data transmission between battery pack and electronic device |
| US11029941B2 (en) | 2017-11-30 | 2021-06-08 | Nanjing Chervon Industry Co., Ltd. | Electrical device and program update method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000195564A (en) * | 1998-12-25 | 2000-07-14 | Matsushita Electric Ind Co Ltd | Detecting device of the number of charging-discharging cycles and battery pack using this |
| JP2004079472A (en) * | 2002-08-22 | 2004-03-11 | Nissan Motor Co Ltd | Charging rate estimation device of secondary battery |
| CN101399386A (en) * | 2007-09-25 | 2009-04-01 | 南京德朔实业有限公司 | Lithium battery pack and charging method thereof |
| CN101509960A (en) * | 2008-11-20 | 2009-08-19 | 奇瑞汽车股份有限公司 | Battery voltage and temperature monitoring device |
| CN202142843U (en) * | 2011-07-12 | 2012-02-08 | 广州明美电子有限公司 | Metering and protecting circuit of double-section battery |
| CN202142842U (en) * | 2011-05-20 | 2012-02-08 | 上海亿威泰客新能源技术有限公司 | Multi-cell battery monitoring circuit |
| CN102684165A (en) * | 2011-03-07 | 2012-09-19 | 比亚迪股份有限公司 | Charge and discharge protection circuit for multi-section lithium battery |
-
2013
- 2013-12-23 CN CN201310716575.9A patent/CN103698711A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000195564A (en) * | 1998-12-25 | 2000-07-14 | Matsushita Electric Ind Co Ltd | Detecting device of the number of charging-discharging cycles and battery pack using this |
| JP2004079472A (en) * | 2002-08-22 | 2004-03-11 | Nissan Motor Co Ltd | Charging rate estimation device of secondary battery |
| CN101399386A (en) * | 2007-09-25 | 2009-04-01 | 南京德朔实业有限公司 | Lithium battery pack and charging method thereof |
| CN101509960A (en) * | 2008-11-20 | 2009-08-19 | 奇瑞汽车股份有限公司 | Battery voltage and temperature monitoring device |
| CN102684165A (en) * | 2011-03-07 | 2012-09-19 | 比亚迪股份有限公司 | Charge and discharge protection circuit for multi-section lithium battery |
| CN202142842U (en) * | 2011-05-20 | 2012-02-08 | 上海亿威泰客新能源技术有限公司 | Multi-cell battery monitoring circuit |
| CN202142843U (en) * | 2011-07-12 | 2012-02-08 | 广州明美电子有限公司 | Metering and protecting circuit of double-section battery |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105207290A (en) * | 2015-09-15 | 2015-12-30 | 浙江超威创元实业有限公司 | Parallel connection battery control device and method |
| US11029941B2 (en) | 2017-11-30 | 2021-06-08 | Nanjing Chervon Industry Co., Ltd. | Electrical device and program update method thereof |
| WO2019120292A1 (en) * | 2017-12-21 | 2019-06-27 | 南京德朔实业有限公司 | Battery pack and method for data transmission between battery pack and electronic device |
| US11094969B2 (en) | 2017-12-21 | 2021-08-17 | Nanjing Chervon Industry Co., Ltd. | Battery pack and data transmission method between the battery pack and electrical device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105162215B (en) | One kind is used for lead-acid batteries distributed battery management system and method in a balanced way | |
| CN108039750A (en) | A kind of energy-storage system, balanced energy storage method, battery management unit and storage medium | |
| CN103066671A (en) | Uniform charging method and uniform charging device for lithium battery packs | |
| CN205051428U (en) | Ups | |
| CN107732336A (en) | A kind of EMS | |
| CN103986205A (en) | Sixteen-string lithium battery pack multi-mode balance control method capable of carrying out dynamic adaption | |
| CN103698711A (en) | Battery pack dual-section detecting system | |
| CN106329640B (en) | A kind of battery charging equalization apparatus and method | |
| CN202712961U (en) | Server cabinet and data center with same | |
| CN107632269A (en) | The online charging-discharge tester system of communication storage battery | |
| CN104167780B (en) | A kind of continuous controlled isolating active active equalization charging module and charge system thereof | |
| CN103558557A (en) | Power battery pack detection circuit | |
| CN207426715U (en) | Energy storage managing device and energy storage monitor system | |
| CN103683383B (en) | A kind of low voltage standby power circuit and method | |
| CN104901345A (en) | Series-connected storage battery pack charge and discharge method and independent rechargeable storage battery pack | |
| CN202737520U (en) | Pulse equalization type electric car battery charger | |
| CN103682487A (en) | Filtering battery pack system | |
| CN103633698A (en) | Battery equalizing charging method and equalizing charger thereof | |
| CN210985698U (en) | Online charging device for lithium battery | |
| CN105529782B (en) | Online storage battery pack lagging battery emergency auxiliary system and working method thereof | |
| CN104113090A (en) | Storage battery pack energy monitoring system | |
| CN102593897A (en) | Valley-filling type equalization module for power lithium battery pack | |
| CN207835131U (en) | Intelligent charge control device for wind-driven generator | |
| CN202142897U (en) | Intelligent charger for miner's lamps | |
| CN110518659A (en) | A kind of electric motor car with two wheels charger control method and electric motor car with two wheels charger |
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: 20140402 |