CN104701898A - Balanced charger based on internal resistance of battery - Google Patents
Balanced charger based on internal resistance of battery Download PDFInfo
- Publication number
- CN104701898A CN104701898A CN201310641542.2A CN201310641542A CN104701898A CN 104701898 A CN104701898 A CN 104701898A CN 201310641542 A CN201310641542 A CN 201310641542A CN 104701898 A CN104701898 A CN 104701898A
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- internal resistance
- power supply
- battery core
- monomer battery
- controller
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- 238000005259 measurement Methods 0.000 claims abstract description 10
- 239000000178 monomer Substances 0.000 claims description 43
- 230000007704 transition Effects 0.000 claims description 2
- 239000004973 liquid crystal related substance Substances 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 4
- 230000005611 electricity Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- H02J7/0021—
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention relates to a balanced charger based on internal resistance of a battery. A power supply unit (2) provides working power supply for a controller (1), an internal resistance measurement module (3), and power supplies from 1(4-1) to N(4-n); the controller (1) is connected with the power supplies from 1(4-1) to N(4-n); voltage of single electric cores from 1(5-1) to N(5-n) is acquired; on or off of the power supplies from 1(4-1) to N(4-n) is controlled; the controller (1) acquires battery internal resistance of the single electric cores from 1(5-1) to N(5-n), and voltage values and internal resistance values of the single electric cores from 1(5-1) to N(5-n) are displayed via a connected liquid crystal display module (6).
Description
Technical field
The present invention relates to a kind of equalizing charger based on the internal resistance of cell, belong to battery testing field.
Background technology
The group charger of current routine generally adopts charger to carry out serial connection charge to battery pack, because battery pack is composed in series by many monomer battery cores, inevitably individual difference is there is between each monomer battery core, and although the mode of serial connection charge is easy, fast, but along with the carrying out of charging, individual monomers battery core wherein must be had to arrive maximum charging voltage, and other monomer battery cores also do not reach this voltage, if continue as batteries charging, then must cause some monomer battery core overcharge, if when total voltage reaches nominal charging voltage, wherein some monomer battery core does not also reach maximum charging voltage, this is that charger just stopped work, individual monomers battery core charge less electricity must be caused, therefore, the long-term overcharge of individual monomers battery core in battery pack or charge less electricity, monomer battery core is caused seriously to produce a polarization, thus affect the performance and used life of battery pack.
Recently, people progressively pay attention to the equalizing charge research of battery pack, but the balanced charging method proposed is all the easy means such as single measurement cell voltage, actual portfolio effect also has not enough, and the internal resistance of cell has become the important parameter weighing battery performance at present, to the measuring and analysis of the internal resistance of cell, be conducive to finding out behindhand battery, carry out charge compensate to behindhand battery targetedly, make equalizing charge better effects if, the present invention proposes based on such idea just.
Summary of the invention
The present invention is intended to propose a kind of equalizing charger based on the internal resistance of cell, carries out equalizing charge to the battery pack be made up of many monomer battery cores, by measuring the internal resistance of cell, improves balanced consistency effect, to improve the overall performance of battery pack.
For realizing above-mentioned object, the present invention adopts following technical scheme:
A kind of equalizing charger based on the internal resistance of cell, comprise controller (1), power subsystem (2), internal resistance measurement module (3), power supply 1 (4-1) ~ power supply N (4-n), monomer battery core 1 (5-1) ~ monomer battery core N (5-n), LCD MODULE (6); See accompanying drawing 1;
Referring to accompanying drawing 1, the course of work of the present invention is described:
Power subsystem (2) is controller (1), internal resistance measurement module (3) and power supply 1 (4-1) ~ power supply N (4-n) provide working power, controller (1) connects power supply 1 (4-1) ~ power supply N (4-n), gather the voltage of monomer battery core 1 (5-1) ~ monomer battery core N (5-n), and control power supply 1 (4-1) ~ power supply N (4-n) and start or stop, controller (1) gathers the internal resistance of cell of monomer battery core 1 (5-1) ~ monomer battery core N (5-n) by internal resistance measurement module (3), and pass through magnitude of voltage and the internal resistance value of LCD MODULE (6) the displaying monomer battery core 1 (5-1) ~ monomer battery core N (5-n) connected.
Described charge power supply 1 (4-1) ~ charge power supply N (4-n) is identical with monomer battery core in battery pack 1 (5-1) ~ monomer battery core N (5-n) quantity.
The internal resistance measurement method that the present invention relates to is: voltage VC when battery has a charging current I and without voltage V0 during charging current, both voltage differences are V=VC-V0, internal resistance of cell R0=V/I, internal resistance measurement is measured with the stopping transition period in power supply 1 (4-1) ~ power supply N (4-n) work.
Beneficial effect of the present invention:
(1) fast uniform charging can be realized to power battery pack, ensure that the voltage of monomer battery core in battery pack is consistent, thus improve the consistency of performance of each monomer battery core in power battery pack;
(2) by measuring the internal resistance of cell, carry out equalizing charge to battery targeted specifically, portfolio effect is better.
accompanying drawing illustrates:
Accompanying drawing 1 is the theory diagram of equalizing charger proposed by the invention.
embodiment:
In order to make technical scheme of the present invention clearly understand, below in conjunction with drawings and Examples, the present invention is described in more detail, instantiation described herein, only in order to explain the present invention, is not limited to the present invention.
embodiment:
1, the monomer battery core 1 (5-1) ~ monomer battery core N (5-n) of equalizing charger and battery pack is coupled together;
2, start equalizing charger, power subsystem (2) provides power supply needed for work for equipment;
3, controller (1) gathers the voltage V0 of monomer battery core 1 (5-1) ~ monomer battery core N (5-n), and shows in LCD MODULE (6);
4, voltage is started at the power supply 1 (4-1) ~ power supply N (4-n) that the monomer battery core of setting range is corresponding, monomer battery core 1 (5-1) ~ monomer battery core N (5-n) is charged, charging current I;
5, controller (1) gathers the voltage VC of monomer battery core 1 (5-1) ~ monomer battery core N (5-n), and shows in LCD MODULE (6);
6, controller (1) calculates internal resistance of cell R0=(VC-V0)/I, and shows in LCD MODULE (6);
7, controller (1) regulates the power supply that the battery excessive with the internal resistance of cell is connected, and increases output current;
8, when a certain monomer battery core reaches setting voltage, the work of power supply corresponding is with it stopped;
9, when whole monomer battery core meets the condition of the 8th step, equalizing charge terminates.
Claims (3)
1. the equalizing charger based on the internal resistance of cell, comprise controller (1), power subsystem (2), internal resistance measurement module (3), power supply 1 (4-1) ~ power supply N (4-n), monomer battery core 1 (5-1) ~ monomer battery core N (5-n), LCD MODULE (6), it is characterized in that: power subsystem (2) is controller (1), internal resistance measurement module (3) and power supply 1 (4-1) ~ power supply N (4-n) provide working power, controller (1) connects power supply 1 (4-1) ~ power supply N (4-n), gather the voltage of monomer battery core 1 (5-1) ~ monomer battery core N (5-n), and control power supply 1 (4-1) ~ power supply N (4-n) and start or stop, controller (1) gathers the internal resistance of cell of monomer battery core 1 (5-1) ~ monomer battery core N (5-n) by internal resistance measurement module (3), and pass through magnitude of voltage and the internal resistance value of LCD MODULE (6) the displaying monomer battery core 1 (5-1) ~ monomer battery core N (5-n) connected.
2. a kind of equalizing charger based on the internal resistance of cell according to claim 1, is characterized in that: charge power supply 1 (4-1) ~ charge power supply N (4-n) is identical with monomer battery core in battery pack 1 (5-1) ~ monomer battery core N (5-n) quantity.
3. a kind of equalizing charger based on the internal resistance of cell according to claim 1, is characterized in that: internal resistance measurement is measured with the stopping transition period in power supply 1 (4-1) ~ power supply N (4-n) work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641542.2A CN104701898A (en) | 2013-12-04 | 2013-12-04 | Balanced charger based on internal resistance of battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310641542.2A CN104701898A (en) | 2013-12-04 | 2013-12-04 | Balanced charger based on internal resistance of battery |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104701898A true CN104701898A (en) | 2015-06-10 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310641542.2A Pending CN104701898A (en) | 2013-12-04 | 2013-12-04 | Balanced charger based on internal resistance of battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104701898A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015188A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
| CN110015187A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183142A (en) * | 2007-05-15 | 2008-05-21 | 李庆兰 | On-line measurement method of accumulator cell essential resistance, electrical current work module and accumulator cell essential resistance on-line measurement instrument |
| CN102394322A (en) * | 2011-09-18 | 2012-03-28 | 保定钰鑫电气科技有限公司 | Intelligent storage battery body with warning function |
| CN102868197A (en) * | 2012-09-29 | 2013-01-09 | 江苏省电力公司徐州供电公司 | storage battery online balancer of direct-current system |
| CN202975282U (en) * | 2012-12-19 | 2013-06-05 | 陈洪涛 | Real-time monitoring control system of storage battery equipment in direct current power supply system |
-
2013
- 2013-12-04 CN CN201310641542.2A patent/CN104701898A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101183142A (en) * | 2007-05-15 | 2008-05-21 | 李庆兰 | On-line measurement method of accumulator cell essential resistance, electrical current work module and accumulator cell essential resistance on-line measurement instrument |
| CN102394322A (en) * | 2011-09-18 | 2012-03-28 | 保定钰鑫电气科技有限公司 | Intelligent storage battery body with warning function |
| CN102868197A (en) * | 2012-09-29 | 2013-01-09 | 江苏省电力公司徐州供电公司 | storage battery online balancer of direct-current system |
| CN202975282U (en) * | 2012-12-19 | 2013-06-05 | 陈洪涛 | Real-time monitoring control system of storage battery equipment in direct current power supply system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110015188A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
| CN110015187A (en) * | 2017-08-31 | 2019-07-16 | 比亚迪股份有限公司 | Battery equalization method, system, vehicle, storage medium and electronic equipment |
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| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150610 |