CN201667376U - Intelligent battery pack with precharge function - Google Patents
Intelligent battery pack with precharge function Download PDFInfo
- Publication number
- CN201667376U CN201667376U CN2010201238809U CN201020123880U CN201667376U CN 201667376 U CN201667376 U CN 201667376U CN 2010201238809 U CN2010201238809 U CN 2010201238809U CN 201020123880 U CN201020123880 U CN 201020123880U CN 201667376 U CN201667376 U CN 201667376U
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- CN
- China
- Prior art keywords
- precharge
- lithium battery
- control circuit
- intelligent battery
- charge
- 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.)
- Expired - Fee Related
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The utility model relates to the field of batteries, in particular to an intelligent battery pack with a precharge function, which comprises a lithium ion cell pack, a cell protection control circuit connected with conducted signals and a precharge network, wherein the cell protection control circuit comprises a charge protection switch transistor, a discharge protection switch transistor and an integrated control IC, and the precharge network is formed between the discharge protection switch transistor N1, a resistor R18 and a field effect transistor Q1 at a PACK plus end to implement low-current precharge. When the voltage of a lithium battery is low, the lithium battery is charged with low current, i.e. 0.05C to 0.1C, consequently, high-current charge can be prevented before the active substance of the lithium battery is not completely released, so that the lithium battery can be prevented from permanent damage and even vital potential safety hazards such as smoking, burning and explosion, and thereby the quality of the lithium battery is increased.
Description
[technical field]
The utility model relates to field of batteries, specifically refers to a kind of intelligent battery group with pre-charging functions.
[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 the charge protection switching tube; the discharge protection switch pipe; 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.
The charging of foregoing circuit is to be finished by charge protection switching tube, discharge protection switch pipe and N-channel drive circuit, and the N-channel drive circuit is to judge that by the integrated IC of control the state of lithium battery provides the control that discharges and recharges.Yet when charging to the lithium battery group, charging current is generally about 1800mA; when lithium battery group voltage is low; the voltage difference that is added in circuit between charging device and the battery pack is bigger, can cause excessive charging current, damages lithium-ion electric core and electric core protection control circuit easily.
[utility model content]
The utility model purpose is to solve the existing above-mentioned problem of intelligent battery group, and a kind of intelligent battery group with pre-charging functions is provided.
The utlity model has the intelligent battery group of pre-charging functions; the electric core protection control circuit that comprises lithium-ion electric core group, connection conducted signal; comprise the charge and discharge protecting switching tube and control integrated IC on the wherein electric core protection control circuit; at described discharge protection switch pipe and control between the integrated IC and to connect a precharge network, described precharge network comprises at least one resistance and field effect transistor.
Preferably, described resistance and field effect transistor series connection.
Described precharge network also connects a precharge drive circuit.
The utlity model has the intelligent battery group of pre-charging functions; the electric core protection control circuit that comprises lithium-ion electric core group, connection conducted signal; comprise the charge and discharge protecting switching tube and control integrated IC on the wherein electric core protection control circuit; hold at PACK+; discharge protection switch pipe N1 and control and connect a precharge electric network between the integrated IC realizes little pre-charge electro ultrafiltration.When lithium battery voltage is low, giving less electric current of lithium battery is that 0.05-0.1C charges, prevent that the lithium battery active material from carrying out large current charge before also being discharged fully, avoid causing the lithium battery permanent damage in addition smolder, major safety risks such as on fire, blast, improved the quality of lithium battery.
[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 the intelligent battery group of pre-charging functions; as shown in Figure 1, it comprises lithium-ion electric core group 10, connects the electric core protection control circuit 20 of conducted signal, and 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 at described discharge protection switch pipe and control between the integrated IC and to connect a precharge network 30, described precharge network also connects a precharge drive circuit 40, and precharge network 30 is used for realizing restriction large current charge function.
As shown in Figure 2, at PACK+ end, discharge protection switch pipe N2 and control and connect a precharge network 30 between the integrated IC, described precharge network comprises at least one resistance R 18 and field effect transistor Q1.Described precharge network 30 also connects a precharge drive circuit 40; when the voltage that precharge drive circuit 40 detects lithium battery at control integrated circuit IC reaches precharge design condition; disconnect charge protection switching tube N1; precharge drive circuit 40 output low levels; preliminary filling field effect transistor Q1 opens; precharge stream passes through Q1; after current-limiting resistance R18 current limliting; begin lithium battery is carried out little electric current 0.05-0.1C charging; when lithium battery voltage returns to suitable design voltage, these precharge drive circuit 40 output high level, Q1 disconnects; charge protection switching tube N2 opens, and flow to lithium cell charging with charging quickly this moment.Above circuit has reached checks super-high-current, realizes the function of little pre-charge electricity, prevents that the lithium battery active material from carrying out large current charge before also being discharged fully and damaging battery, improved the quality of lithium battery.
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 (3)
1. intelligent battery group with pre-charging functions; the electric core protection control circuit that comprises lithium-ion electric core group, connection conducted signal; comprise the charge and discharge protecting switching tube and control integrated IC on the wherein electric core protection control circuit; it is characterized in that: described discharge protection switch pipe and control between the integrated IC and to connect a precharge network, described precharge network comprises at least one resistance and field effect transistor.
2. the intelligent battery group with pre-charging functions according to claim 1 is characterized in that: described resistance and field effect transistor series connection.
3. the intelligent battery group with pre-charging functions according to claim 1 is characterized in that: described precharge network also connects a precharge drive circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201238809U CN201667376U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack with precharge function |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201238809U CN201667376U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack with precharge function |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201667376U true CN201667376U (en) | 2010-12-08 |
Family
ID=43268339
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201238809U Expired - Fee Related CN201667376U (en) | 2010-03-03 | 2010-03-03 | Intelligent battery pack with precharge function |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201667376U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280928A (en) * | 2011-08-25 | 2011-12-14 | 深圳市创智成科技股份有限公司 | Precharging circuit for printer |
| CN102780248A (en) * | 2012-08-17 | 2012-11-14 | 张晓舜 | Battery pack with intelligent discharge protection function |
| CN109713746A (en) * | 2018-12-19 | 2019-05-03 | 努比亚技术有限公司 | A kind of charging circuit and charge control method, mobile terminal |
-
2010
- 2010-03-03 CN CN2010201238809U patent/CN201667376U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280928A (en) * | 2011-08-25 | 2011-12-14 | 深圳市创智成科技股份有限公司 | Precharging circuit for printer |
| CN102780248A (en) * | 2012-08-17 | 2012-11-14 | 张晓舜 | Battery pack with intelligent discharge protection function |
| CN109713746A (en) * | 2018-12-19 | 2019-05-03 | 努比亚技术有限公司 | A kind of charging circuit and charge control method, mobile terminal |
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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: 20101208 Termination date: 20130303 |