CN103066655A - Monitoring circuit of battery pack voltage - Google Patents
Monitoring circuit of battery pack voltage Download PDFInfo
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- CN103066655A CN103066655A CN2012105691933A CN201210569193A CN103066655A CN 103066655 A CN103066655 A CN 103066655A CN 2012105691933 A CN2012105691933 A CN 2012105691933A CN 201210569193 A CN201210569193 A CN 201210569193A CN 103066655 A CN103066655 A CN 103066655A
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- battery
- voltage
- battery pack
- supervisory circuit
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Abstract
The invention provides a monitoring circuit of battery pack voltage. The monitoring circuit of the battery pack voltage resolves the problem that existing battery pack is short in service time. The monitoring circuit of the battery pack voltage comprises a battery pack, n shunting-switches connected with corresponding barriers in parallel, and n monitor circuits which are coupled and connected with the corresponding batteries in parallel, wherein the battery pack comprises n batteries and the n batteries are connected in series, the n is a natural number. Each monitoring circuit receives voltages of the two ends of the corresponding batteries and provides controlling signals according to the voltages of the two ends of the corresponding batteries, wherein the controlling signals are used for switching on or switching off the corresponding shunting-switches. Therefore, the batteries can be shorted out when the voltages of the two ends of the corresponding batteries are very low. The monitoring circuit of the battery pack voltage can reduce losses and prolong the service time of the battery pack.
Description
Technical field
The present invention relates to electronic technology field, particularly a kind of battery voltage supervisory circuit.
Background technology
Along with the development of science and technology, portable set is widely used.Portable set passes through battery-powered in the situation that does not have the electric network source power supply.Described battery pack generally comprises the battery that multi-section serial connects.But when a certain joint in the battery pack or a few batteries power supply exhausted or damage, it is very large that the resistance of this battery will become.If continue to be connected in series to powering portable devices with other normal battery, this battery is lot of energy, thereby reduced efficient, shortened the service time of battery pack.
Summary of the invention
The present invention proposes a kind of battery voltage supervisory circuit, has solved the problem that existing battery pack efficient is low, service time is short.
Technical scheme of the present invention is achieved in that
A kind of battery voltage supervisory circuit comprises: battery pack, described battery pack comprise n battery that is connected in series, and wherein n is natural number; N the shorting switch that is connected in parallel with respective battery; And with n supervisory circuit of respective battery coupled in parallel, wherein said each supervisory circuit receives the respective battery both end voltage, and provide control signal according to the respective battery both end voltage, in order to corresponding shorting switch conducting or disconnection, thus when the respective battery both end voltage is very low with described battery short circuit.
Alternatively, described shorting switch comprises MOS (metal-oxide-semiconductor) memory.
Alternatively, described supervisory circuit comprises: comparator has in-phase input end, inverting input and output; Biasing circuit has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator; Wherein said battery and shorting switch coupled in parallel are between the negative terminal of the in-phase input end of comparator and biasing circuit, and described shorting switch comprises the control end that is coupled to described comparator output terminal.
Alternatively, described biasing circuit comprises voltage source.
Alternatively, the voltage levvl that provides of described voltage source is 0.5V.
The invention has the beneficial effects as follows: reduced loss, prolonged the service time of battery pack.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art, the below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art, apparently, accompanying drawing in the following describes only is some embodiments of the present invention, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is a kind of according to an embodiment of the invention electrical block diagram of battery voltage supervisory circuit 100;
Fig. 2 is a kind of in accordance with another embodiment of the present invention electrical block diagram of battery voltage supervisory circuit 200.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the invention, the technical scheme in the embodiment of the invention is clearly and completely described, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills belong to the scope of protection of the invention not making the every other embodiment that obtains under the creative work prerequisite.
Fig. 1 is the electrical block diagram of a kind of battery voltage supervisory circuit 100 of the present invention.As shown in Figure 1, described battery voltage supervisory circuit 100 comprises: battery pack, comprise the battery that n is connected in series (11,21 ..., n1), wherein n is natural number; N the shorting switch that is connected in parallel with respective battery (12,22 ..., n2); And with n supervisory circuit of respective battery coupled in parallel (13,23 ..., n3), described each supervisory circuit receives the respective battery both end voltage, and provide control signal according to the respective battery both end voltage, in order to corresponding shorting switch conducting or disconnection, thus when the respective battery both end voltage is very low with described battery short circuit.
Preferably, described shorting switch comprises MOS (metal-oxide-semiconductor) memory (MOSFET).
Fig. 2 is the electrical block diagram of battery voltage supervisory circuit 200 in accordance with another embodiment of the present invention.Battery voltage supervisory circuit 200 shown in Figure 2 has specifically illustrated the electrical block diagram of supervisory circuit.As shown in Figure 2, described supervisory circuit comprises: comparator 101 has in-phase input end, inverting input and output; Biasing circuit 102 has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator 101; Wherein said battery and shorting switch coupled in parallel are between the negative terminal of the in-phase input end of comparator 101 and biasing circuit 102, and described shorting switch comprises the control end that is coupled to described comparator 101 outputs.
Preferably, described biasing circuit comprises voltage source.
Preferably, the voltage levvl that provides of described voltage source is 0.5V.
When described battery voltage supervisory circuit 100/200 operation, the voltage (such as 0.5V) that comparator 101 its respective battery both end voltage of comparison and biasing circuit provide.When the power supply of respective battery exhausts or damages, so that its both end voltage is when being lower than the voltage levvl that biasing circuit provides, comparator 101 is corresponding shorting switch conducting, with the corresponding battery of short circuit, thereby minimizes the resistance of this battery path.
Therefore, battery voltage supervisory circuit of the present invention has reduced loss, has prolonged the service time of battery pack.
The above only is preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. a battery voltage supervisory circuit is characterized in that, comprising:
Battery pack, described battery pack comprise n battery that is connected in series, and wherein n is natural number;
N the shorting switch that is connected in parallel with respective battery; And
N supervisory circuit with the respective battery coupled in parallel, wherein said each supervisory circuit receives the respective battery both end voltage, and provide control signal according to the respective battery both end voltage, in order to corresponding shorting switch conducting or disconnection, thus when the respective battery both end voltage is very low with described battery short circuit.
2. battery voltage supervisory circuit as claimed in claim 1 is characterized in that, described shorting switch comprises MOS (metal-oxide-semiconductor) memory.
3. battery voltage supervisory circuit as claimed in claim 1 is characterized in that, described supervisory circuit comprises:
Comparator has in-phase input end, inverting input and output;
Biasing circuit has anode and negative terminal, and its anode is coupled to the in-phase input end of comparator; Wherein
Described battery and shorting switch coupled in parallel are between the negative terminal of the in-phase input end of comparator and biasing circuit, and described shorting switch comprises the control end that is coupled to described comparator output terminal.
4. battery voltage supervisory circuit as claimed in claim 3 is characterized in that, described biasing circuit comprises voltage source.
5. battery voltage supervisory circuit as claimed in claim 4 is characterized in that, the voltage levvl that described voltage source provides is 0.5V.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105691933A CN103066655A (en) | 2012-12-25 | 2012-12-25 | Monitoring circuit of battery pack voltage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105691933A CN103066655A (en) | 2012-12-25 | 2012-12-25 | Monitoring circuit of battery pack voltage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103066655A true CN103066655A (en) | 2013-04-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012105691933A Pending CN103066655A (en) | 2012-12-25 | 2012-12-25 | Monitoring circuit of battery pack voltage |
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| CN (1) | CN103066655A (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518230A (en) * | 2014-12-16 | 2015-04-15 | 华侨大学 | Control circuit and method for automatically detecting battery with inverted voltage in MFCs battery pack |
| CN105375570A (en) * | 2015-11-25 | 2016-03-02 | 青岛盛嘉信息科技有限公司 | Multipack-battery-powered flyback converter |
| CN105391159A (en) * | 2015-12-07 | 2016-03-09 | 青岛盛嘉信息科技有限公司 | Multi-serially connected battery pack |
| CN105429274A (en) * | 2015-12-02 | 2016-03-23 | 青岛盛嘉信息科技有限公司 | Dual-battery switching circuit |
| CN105429273A (en) * | 2015-12-02 | 2016-03-23 | 青岛盛嘉信息科技有限公司 | Three-battery switching circuit |
| CN105449827A (en) * | 2015-11-27 | 2016-03-30 | 青岛盛嘉信息科技有限公司 | Double-battery switching circuit based on IGBT |
| CN105490374A (en) * | 2015-11-25 | 2016-04-13 | 青岛盛嘉信息科技有限公司 | Self-switched double-battery structure |
| CN105489950A (en) * | 2015-11-25 | 2016-04-13 | 青岛盛嘉信息科技有限公司 | Self-switched three-battery structure |
| CN105552982A (en) * | 2015-12-02 | 2016-05-04 | 青岛盛嘉信息科技有限公司 | Battery switching circuit on the basis of IGBT |
| CN108674224A (en) * | 2018-05-14 | 2018-10-19 | 广西源正新能源汽车有限公司 | Pure electric bus remote monitoring platform and method for diagnosing faults |
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| CN1267927A (en) * | 1999-03-18 | 2000-09-27 | 富士通株式会社 | Protection method, control circuit and battery apparatus |
| CN1536731A (en) * | 2003-04-04 | 2004-10-13 | 京东方科技集团股份有限公司 | Battery with redundant cell unit |
| CN102306943A (en) * | 2011-09-15 | 2012-01-04 | 河北工业大学 | Lithium ion battery management system |
| CN102723758A (en) * | 2012-06-21 | 2012-10-10 | 北京理工大学 | Battery flexible combination control system |
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2012
- 2012-12-25 CN CN2012105691933A patent/CN103066655A/en active Pending
Patent Citations (4)
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| CN1267927A (en) * | 1999-03-18 | 2000-09-27 | 富士通株式会社 | Protection method, control circuit and battery apparatus |
| CN1536731A (en) * | 2003-04-04 | 2004-10-13 | 京东方科技集团股份有限公司 | Battery with redundant cell unit |
| CN102306943A (en) * | 2011-09-15 | 2012-01-04 | 河北工业大学 | Lithium ion battery management system |
| CN102723758A (en) * | 2012-06-21 | 2012-10-10 | 北京理工大学 | Battery flexible combination control system |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104518230A (en) * | 2014-12-16 | 2015-04-15 | 华侨大学 | Control circuit and method for automatically detecting battery with inverted voltage in MFCs battery pack |
| CN104518230B (en) * | 2014-12-16 | 2018-03-09 | 华侨大学 | A kind of control circuit and method of automatic detection MFCs battery voltages reversion battery |
| CN105375570A (en) * | 2015-11-25 | 2016-03-02 | 青岛盛嘉信息科技有限公司 | Multipack-battery-powered flyback converter |
| CN105490374A (en) * | 2015-11-25 | 2016-04-13 | 青岛盛嘉信息科技有限公司 | Self-switched double-battery structure |
| CN105489950A (en) * | 2015-11-25 | 2016-04-13 | 青岛盛嘉信息科技有限公司 | Self-switched three-battery structure |
| CN105449827A (en) * | 2015-11-27 | 2016-03-30 | 青岛盛嘉信息科技有限公司 | Double-battery switching circuit based on IGBT |
| CN105429274A (en) * | 2015-12-02 | 2016-03-23 | 青岛盛嘉信息科技有限公司 | Dual-battery switching circuit |
| CN105429273A (en) * | 2015-12-02 | 2016-03-23 | 青岛盛嘉信息科技有限公司 | Three-battery switching circuit |
| CN105552982A (en) * | 2015-12-02 | 2016-05-04 | 青岛盛嘉信息科技有限公司 | Battery switching circuit on the basis of IGBT |
| CN105391159A (en) * | 2015-12-07 | 2016-03-09 | 青岛盛嘉信息科技有限公司 | Multi-serially connected battery pack |
| CN108674224A (en) * | 2018-05-14 | 2018-10-19 | 广西源正新能源汽车有限公司 | Pure electric bus remote monitoring platform and method for diagnosing faults |
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Application publication date: 20130424 |