CN201682297U - Intelligent battery pack capable of allowing number of lithium batteries to be increased - Google Patents
Intelligent battery pack capable of allowing number of lithium batteries to be increased Download PDFInfo
- Publication number
- CN201682297U CN201682297U CN2010201238654U CN201020123865U CN201682297U CN 201682297 U CN201682297 U CN 201682297U CN 2010201238654 U CN2010201238654 U CN 2010201238654U CN 201020123865 U CN201020123865 U CN 201020123865U CN 201682297 U CN201682297 U CN 201682297U
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- Prior art keywords
- lithium
- voltage
- circuit
- electric core
- intelligent battery
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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.)
- Expired - Fee Related
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
The utility model relates to the field of batteries and particularly relates to an intelligent battery pack capable of allowing the number of lithium batteries to be increased. The intelligent battery pack comprises a lithium ion electrical core group, an battery cell protect and control circuit used for connecting and transmitting signals, and a voltage follower made of a comparator U4. The circuit changes the manner of supplying voltage to IC by increasing the number of the lithium batteries, that is, single lithium battery is replaced by double lithium batteries. Therefore, the application range of 2.6V to 4.5V of the control integration IC is widened.
Description
[technical field]
The utility model relates to field of batteries, specifically refer to a kind of have can increase the intelligent battery of lithium battery joint number group.
[background technology]
Along with science and technology development, the electronic product of increasing various uses arises at the historic moment, and supports that the battery of electronic product work then is the lifeline of electronic product, and apparent is particularly important.Generally speaking; the lithium ion smart battery group that notebook computer uses is made of three parts: the lithium-ion electric core group; the shell of electricity core protection control circuit and encapsulation; wherein electric core protection control circuit is supported whole smart battery system management bus function; electricity core protection control circuit is by charge protection switching tube N1; discharge protection switch pipe N2; control integrated circuit IC; telecommunication circuit; the coulomb counting circuit; circuit such as overcurrent and short-circuit protection circuit is formed; it is used for realizing the discharge minimum voltage restriction of lithium battery group; the restriction of charging ceiling voltage, multiple circuit functions such as temperature and current detecting and coulomb counting.Yet foregoing circuit has weak point: when the integrated IC supply power voltage of control of supplying with the lithium battery group during at 2.6V～4.5V scope, can only be used on the joint lithium cell, voltage reaches more than the 8.2V in the time of on will being used in two joint lithium cells, can damage the integrated IC of control, limit the application of lithium battery group so undoubtedly.
[utility model content]
The utility model purpose is to solve existing intelligent battery group can not come problem to the integrated IC power supply of control with 2.6V～4.5V range of voltages at middle binodal and even multisection lithium battery, and provide a kind of have can increase the intelligent battery of lithium battery joint number group.
The utlity model has to increase the intelligent battery of lithium battery joint number group; the electric core protection control circuit that comprises lithium-ion electric core group, connection conducted signal; wherein electric core protection control circuit is provided with the integrated IC of control; be provided with the voltage halving circuit of the electric core of protection between integrated I C of control and lithium-ion electric core group, described voltage halving circuit comprises the voltage follower that is made of comparator.
Described voltage halving circuit also comprises the electric capacity in parallel and the resistance of series connection.
The utlity model has to increase the intelligent battery of lithium battery joint number group, and the voltage follower of being made up of comparator U4 constitutes, and this circuit can be controlled integrated IC supply power voltage with giving of single-unit lithium battery, and the voltage that is adjusted into the binodal lithium battery gives control integrated IC power supply.Thereby improved the scope of application of controlling integrated IC2.6V～4.5V.
[Figure of description]
Fig. 1 is the utility model schematic block circuit diagram;
Fig. 2 is the utility model circuit diagram.
[embodiment]
In order to make the purpose of this utility model, technical scheme and advantage clearer,, the utility model is further elaborated below in conjunction with drawings and Examples.Be to be understood that concrete embodiment described herein only in order to explanation the utility model, and be not used in qualification the utility model.
The utlity model has to increase the intelligent battery of lithium battery joint number group; as shown in Figure 1; it comprises lithium-ion electric core group 10, is electrically connected the electric core protection control circuit 20 of conducted signal; wherein electric core protection control circuit 20 is by charge protection switching tube N1; discharge protection switch pipe N2 controls compositions such as integrated IC.Wherein be provided with the voltage halving circuit 30 of the electric core of protection between integrated IC of control and lithium-ion electric core group 10, described voltage halving circuit comprises the voltage follower that is made of comparator.
Join shown in Figure 2, voltage halving circuit 30 is voltage followers of being made up of comparator U4, voltage halving circuit 30 also comprises resistance R 4, the R6 of capacitor C 5, C6 and series connection in parallel, will reduce by half to the integrated IC supply power voltage of control, thereby improve the scope of application of hanging down the integrated IC of withstand voltage control.Lithium battery power supply is given voltage follower, the processing of the voltage halving circuit that the process voltage follower is formed, and the power reguirements that reaches control IC is divided voltage equally, voltage follower input impedance height, and output impedance is low.Input impedance up to the explanation of several megohms to the power consumption of lithium battery greatly about several microamperes, output impedance is low to be reached several ohm and illustrates that then load there is not influence, the performance that therefrom can find out 30 pairs of lithium batteries of voltage halving circuit of increase there is not influence, but the scope of application of the low-voltage power supply control IC that has improved.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all any modifications of within spirit of the present utility model and principle, being done, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (2)
1. one kind has and can increase the intelligent battery of lithium battery joint number group; the electric core protection control circuit that comprises lithium-ion electric core group, connection conducted signal; wherein electric core protection control circuit is provided with the integrated IC of control; it is characterized in that: be provided with the voltage halving circuit of the electric core of protection between integrated IC of control and lithium-ion electric core group, described voltage halving circuit comprises the voltage follower that is made of comparator.
2. according to claim 1 have can increase the intelligent battery of lithium battery joint number group, it is characterized in that: described voltage halving circuit also comprises the electric capacity in parallel and the resistance of series connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201238654U CN201682297U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack capable of allowing number of lithium batteries to be increased |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201238654U CN201682297U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack capable of allowing number of lithium batteries to be increased |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201682297U true CN201682297U (en) | 2010-12-22 |
Family
ID=43347330
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201238654U Expired - Fee Related CN201682297U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack capable of allowing number of lithium batteries to be increased |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201682297U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772090A (en) * | 2016-12-28 | 2017-05-31 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
-
2010
- 2010-03-03 CN CN2010201238654U patent/CN201682297U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106772090A (en) * | 2016-12-28 | 2017-05-31 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
| CN106772090B (en) * | 2016-12-28 | 2019-06-18 | 深圳市共济科技股份有限公司 | The Analysis of Networking method and Analysis of Networking system of Monitored System of Industrial Storage Cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101222 Termination date: 20130303 |