CN103840537A - Battery pack with weak current switch circuit - Google Patents
Battery pack with weak current switch circuit Download PDFInfo
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- CN103840537A CN103840537A CN201410129345.7A CN201410129345A CN103840537A CN 103840537 A CN103840537 A CN 103840537A CN 201410129345 A CN201410129345 A CN 201410129345A CN 103840537 A CN103840537 A CN 103840537A
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- circuit
- controller
- battery pack
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- current switching
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Abstract
The invention relates to the technical field of battery management, in particular to a battery pack with a weak current switch circuit. The battery pack is low in cost, small in size and long in service life. The battery pack is characterized in that a controller, a voltage sampling circuit connected with the controller, a low voltage indicator circuit connected with the controller, an over-discharge protection circuit connected with the controller, and the weak current switch circuit connected with the controller are further arranged, wherein the output end of the weak current switch circuit is connected with a discharge circuit, a bidirectional silicon controlled rectifier electronic switch with optoelectronic isolation is arranged in the discharge circuit, a photoelectric coupler connected with the control pole of a bidirectional silicon controlled rectifier is arranged in the weak current switch circuit, and the voltage sampling circuit is connected with the battery pack in parallel and comprises parallelly-connected voltmeters and a detection circuit composed of detection resistors which are connected in series. Compared with the prior art, the battery pack has the remarkable advantages of being reasonable in structure, stable in working, safe and reliable.
Description
Technical field:
The present invention relates to battery management technical field, specifically a kind of cost is low, volume is little, the battery pack with light current switching circuit of long service life.
Background technology:
The advantages such as lithium battery is little with its volume at present, energy density large, memory-less effect are more and more widely used in every field, during wherein using lithium battery as electrical source of power, in order to reach load supplying demand, often need multiple cell series connection to form battery pack.At present in the practical application of lithium battery group, the break-make of high-current switch with artificial controlled discharge loop of need to connecting while connection with load, this current switch is owing to being connected in discharge loop, must meet the discharging current requirement of this battery pack, except volume is large, cost high, after using frequently, inevitably can there is the bad phenomenon such as aging, oxidation, have influence on the normal use of lithium battery group, even have potential safety hazard.
Summary of the invention:
The present invention is directed to the shortcoming and defect existing in prior art, propose that a kind of cost is low, volume is little, the battery pack with light current switching circuit of long service life.
Technical scheme of the present invention is:
A kind of battery pack with light current switching circuit, comprise the battery pack by more than two cell is in series, the discharge circuit being connected with battery pack, it is characterized in that being also provided with controller, the voltage sampling circuit being connected with controller, the low pressure indicating circuit being connected with controller, the over-discharge protection circuit being connected with controller and the light current switching circuit being connected with controller, wherein the output of light current switching circuit is connected with discharge circuit, in discharge circuit, be provided with the bidirectional triode thyristor electronic switch with photoelectricity isolation, in light current switching circuit, be provided with the photoelectric coupled device being connected with the control utmost point of bidirectional triode thyristor, voltage sampling circuit is in parallel with battery pack, the testing circuit that comprises voltmeter in parallel and be connected into by detection resistance.
In the present invention, in over-discharge protection circuit, be provided with comparator, comparator Yi road input is connected with the output of voltage sampling circuit, and another road input is connected with the output of reference voltage source, and the output of comparator is connected with the input of controller.
In the present invention, be also provided with the parameter input circuit being connected with controller, and the control button being connected with the input of parameter input circuit, for the parameter setting of finishing the work.
The control end of mesolow indicating circuit of the present invention is connected with controller, and signal input part is connected with the output of voltage sampling circuit, and output is connected with display circuit, and the output of display circuit is connected with liquid crystal display screen.
The present invention compared with prior art, by a series of weak control circuit control battery power discharge, the problem such as can avoid large electric current access control circuit that circuit is burnt or control device is aging, has rational in infrastructure, working stability, the significant advantage such as safe and reliable.
Accompanying drawing explanation:
Accompanying drawing 1 is structural representation of the present invention.
Accompanying drawing 2 is structural representations of over-discharge protection circuit in the present invention.
Reference numeral: battery pack 1, discharge circuit 2, controller 3, voltage sampling circuit 4, low pressure indicating circuit 5, over-discharge protection circuit 6, light current switching circuit 7, comparator 8, reference voltage source 9, parameter input circuit 10, control button 11, display circuit 12, liquid crystal display screen 13.
Embodiment:
Below in conjunction with accompanying drawing, the present invention is further illustrated.
As shown in Figure 1, a kind of battery pack with light current switching circuit, comprise the battery pack 1 by more than two cell is in series, the discharge circuit 2 being connected with battery pack 1, it is characterized in that being also provided with controller 3, the voltage sampling circuit 4 being connected with controller 3, the low pressure indicating circuit 5 being connected with controller 3, the over-discharge protection circuit 6 being connected with controller 3 and the light current switching circuit 7 being connected with controller 3, wherein the output of light current switching circuit 7 is connected with discharge circuit 2, in discharge circuit 2, be provided with the bidirectional triode thyristor electronic switch with photoelectricity isolation, in light current switching circuit 7, be provided with the photoelectric coupled device being connected with the control utmost point of bidirectional triode thyristor, voltage sampling circuit 4 is in parallel with battery pack, the testing circuit that comprises voltmeter in parallel and be connected into by detection resistance.
In the present invention, in over-discharge protection circuit 6, be provided with comparator 8 and reference voltage source 9; reference voltage source 9 is for providing reference voltage to comparator 8; comparator 8 Yi road inputs are connected with the output of voltage sampling circuit 4; another road input is connected with the output of reference voltage source 9, and the output of comparator 8 is connected with the input of controller 3.
In the present invention, be also provided with the parameter input circuit 10 being connected with controller 3, and the control button 11 being connected with the input of parameter input circuit 10, for the parameter setting of finishing the work.
The control end of mesolow indicating circuit 5 of the present invention is connected with controller 3, signal input part is connected with the output of voltage sampling circuit 4, output is connected with display circuit 12, the output of display circuit 12 is connected with liquid crystal display screen 13, and controller 3 described in the present invention adopts Chip Microcomputer A RM chip to realize.
The present invention compared with prior art, by a series of weak control circuit control battery power discharge, the problem such as can avoid large electric current access control circuit that circuit is burnt or control device is aging, has rational in infrastructure, working stability, the significant advantage such as safe and reliable.
Claims (4)
1. one kind has the battery pack of light current switching circuit, comprise the battery pack by more than two cell is in series, the discharge circuit being connected with battery pack, it is characterized in that being also provided with controller, the voltage sampling circuit being connected with controller, the low pressure indicating circuit being connected with controller, the over-discharge protection circuit being connected with controller and the light current switching circuit being connected with controller, wherein the output of light current switching circuit is connected with discharge circuit, in discharge circuit, be provided with the bidirectional triode thyristor electronic switch with photoelectricity isolation, in light current switching circuit, be provided with the photoelectric coupled device being connected with the control utmost point of bidirectional triode thyristor, voltage sampling circuit is in parallel with battery pack, the testing circuit that comprises voltmeter in parallel and be connected into by detection resistance.
2. a kind of battery pack with light current switching circuit according to claim 1; it is characterized in that being provided with in over-discharge protection circuit comparator; comparator Yi road input is connected with the output of voltage sampling circuit; another road input is connected with the output of reference voltage source, and the output of comparator is connected with the input of controller.
3. a kind of battery pack with light current switching circuit according to claim 1, is characterized in that being also provided with the parameter input circuit being connected with controller, and the control button being connected with the input of parameter input circuit.
4. a kind of battery pack with light current switching circuit according to claim 1, the control end that it is characterized in that low pressure indicating circuit is connected with controller, signal input part is connected with the output of voltage sampling circuit, output is connected with display circuit, and the output of display circuit is connected with liquid crystal display screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129345.7A CN103840537A (en) | 2014-04-02 | 2014-04-02 | Battery pack with weak current switch circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410129345.7A CN103840537A (en) | 2014-04-02 | 2014-04-02 | Battery pack with weak current switch circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103840537A true CN103840537A (en) | 2014-06-04 |
Family
ID=50803774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410129345.7A Pending CN103840537A (en) | 2014-04-02 | 2014-04-02 | Battery pack with weak current switch circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103840537A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109417207A (en) * | 2018-03-06 | 2019-03-01 | 深圳大力神科技有限公司 | A kind of discharge indicating lamp control circuit and its lithium battery source protection plate |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201234123Y (en) * | 2008-07-16 | 2009-05-06 | 深圳市比克电池有限公司 | Battery protection circuit and battery pack module |
| CN201956703U (en) * | 2010-03-23 | 2011-08-31 | 江苏富朗特新能源有限公司 | Novel lithium battery management system |
| JP2011172399A (en) * | 2010-02-19 | 2011-09-01 | Sony Chemical & Information Device Corp | Protection circuit, battery control device, and battery pack |
-
2014
- 2014-04-02 CN CN201410129345.7A patent/CN103840537A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201234123Y (en) * | 2008-07-16 | 2009-05-06 | 深圳市比克电池有限公司 | Battery protection circuit and battery pack module |
| JP2011172399A (en) * | 2010-02-19 | 2011-09-01 | Sony Chemical & Information Device Corp | Protection circuit, battery control device, and battery pack |
| CN201956703U (en) * | 2010-03-23 | 2011-08-31 | 江苏富朗特新能源有限公司 | Novel lithium battery management system |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109417207A (en) * | 2018-03-06 | 2019-03-01 | 深圳大力神科技有限公司 | A kind of discharge indicating lamp control circuit and its lithium battery source protection plate |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140604 |