CN201504110U - Intelligent balanced lithium battery power supply - Google Patents
Intelligent balanced lithium battery power supply Download PDFInfo
- Publication number
- CN201504110U CN201504110U CN2009201916522U CN200920191652U CN201504110U CN 201504110 U CN201504110 U CN 201504110U CN 2009201916522 U CN2009201916522 U CN 2009201916522U CN 200920191652 U CN200920191652 U CN 200920191652U CN 201504110 U CN201504110 U CN 201504110U
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- China
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- lithium battery
- pin
- triode
- resistance
- circuit
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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)
Abstract
The utility model discloses an intelligent balanced lithium battery power supply comprising a casing and a lithium battery and a control circuit which are arranged in the casing. The control circuit comprises a control unit, a charge-discharge circuit, a balanced protection circuit, an overvoltage detection circuit and a temperature detection circuit; the charge-discharge circuit is connected with a 14th pin of the control unit; the balanced protection circuit is connected with a second pin of the control unit; and the overvoltage detection circuit and the temperature detection circuit are respectively connected with a first pin and a 27th pin of the control unit. The intelligent balanced lithium battery power supply can keep the balance of charge and discharge among a plurality of lithium batteries.
Description
Technical field
The utility model belongs to a kind of rechargeable battery set, and particularly a kind of intelligent balance formula lithium battery power supply can be used for any joint combination of the above lithium battery of 2 joints.
Background technology
Existing jumbo lithium battery is to be made of the single lithium electroplax of multi-disc, and the problem that exists when repeatedly discharging and recharging is that joint number is many more, and capacity is easy to generate deviation more between single battery, causes battery to be scrapped too early.
Summary of the invention
The purpose of this utility model is to provide a kind of intelligent balance formula lithium battery power supply.
To be solved in the utility model is the existing unbalanced problem of charging and discharging lithium battery.
In order to achieve the above object, the technical scheme that provides of the utility model is:
The utility model comprises housing, is located at lithium battery and control circuit in the housing; control circuit comprises control unit, charge-discharge circuit, balanced protection circuit, over-voltage detection circuit and temperature sensing circuit; charge-discharge circuit is connected with 14 pin of control unit; the balanced protection circuit is connected with 2 pin of control unit, and over-voltage detection circuit is connected with 27 pin with 1 pin of control unit respectively with temperature sensing circuit.
The utility model has the advantages that: the electric energy that charges and discharge between multisection lithium battery keeps balance.
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 (a) is circuit theory diagrams of the present utility model.
Fig. 2 (b) is circuit theory diagrams of the present utility model.
Fig. 3 is the utility model balanced protection circuit theory diagrams.
Embodiment
The utility model is further described reaching embodiment in conjunction with the accompanying drawings down.
As shown in the figure, intelligent balance formula lithium battery power supply of the present utility model comprises housing 2, is located at lithium battery 1 and control circuit in the housing 2.Control circuit comprises control unit 5, charge-discharge circuit 6, balanced protection circuit, over-voltage detection circuit 7 and temperature sensing circuit 8.Charge-discharge circuit 6 is connected with 14 pin of control unit 5, and the balanced protection circuit is connected with 2 pin of control unit, and over-voltage detection circuit 7 is connected with 27 pin with 1 pin of control unit respectively with temperature sensing circuit 8.
Charge-discharge circuit 6 comprises triode Q31, metal-oxide-semiconductor Q32, triode Q33, metal-oxide-semiconductor Q34, diode D02 and resistance R 37, and Q31 is connected with 1 pin of metal-oxide-semiconductor Q32 by resistance R 32, and triode Q31 is connected with 4 pin of metal-oxide-semiconductor Q32 by resistance R 32; Triode Q33 is connected with 8 pin of metal-oxide-semiconductor Q32 by resistance R 36; Metal-oxide-semiconductor Q34 is connected with triode Q33 by resistance R 35, and diode D02 is connected with 1 pin of metal-oxide-semiconductor Q32.
The operation principle of charge-discharge circuit 6 is:
Charging: 14 pin of control unit 5 utilize pulse-width modulation (PWM) mode by metal-oxide-semiconductor Q32 to the charging voltage control of charging, with adjustment lithium battery required voltage.Sufficient or when breaking down when lithium battery, can stop charging, diode D02 is in order to prevent that this charger from connecing instead.
Discharge: 14 foot control system metal-oxide-semiconductor Q34 of control unit 5 and current sampling resistor R37 form discharge loop and discharge; Excessive when electric current, when voltage reaches minimal protection point, turn-off discharge loop, with the protection lithium battery by metal-oxide-semiconductor Q34.
The balanced protection circuit comprises chip U201, U211, U221, U231, U241, U251, U261, U101, U111, U121, U131, U141, U151 and U161, triode Q201, Q211, Q221, Q231, Q241, Q251, Q261, Q101, Q111, Q121, Q131, Q241, Q151 and Q161, light lotus root P101, P111, P121, P131, P141, P151 and P161; The CO pin of chip U201, U211, U221, U231, U241, U251, U261 is connected with triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 by corresponding resistance respectively, connects by triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 respectively between adjacent chips U201, U211, U221, U231, U241, U251, the U261; Triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 are connected with shunt resistance R204 and R205, R214 and R215, R224 and R225, R234 and R235, R244 and R245, R254 and R255, R264 and R265 respectively; The CO pin of adjacent chips U101, U111, U121, U131, U141, U151 and U161 is connected by triode Q101, Q111, Q121, Q131, Q241, Q151 and Q161 respectively, is connected with light lotus root P101, P111, P121, P131, P141, P151 and P161 between adjacent chips U101, U111, U121, U131, U141, U151 and the U161 respectively.
Balanced protection circuit working principle:
With a batteries is that example describes.The voltage of first segment battery is that V1 is when reaching balance point during voltage 4.1V, the CO pin output low level of chip U201, triode Q201 conducting, charging current is by resistance R 204, the R205 shunting, the charging current of first segment lithium battery is reduced, and other lithium battery that does not reach balance point continues can as far as possible guarantee like this that by the normalized current charging all lithium battery balances are full of.
When V1 voltage charging during to the highest cell voltage 4.2V, the CO pin output low level of chip U101 provides by P101 and discharges and recharges cut-off signals and give control unit (single-chip microcomputer), turn-offs charge-discharge circuit then.
When V1 voltage discharged into battery minimal protection voltage 2.5V, the D0 pin output low level of chip U101 provided by P101 and discharges and recharges cut-off signals to single-chip microcomputer 2 pin, turn-offs charge-discharge circuit then.
When any batteries reaches the minimum or ceiling voltage point of single battery, all can carry out the circuit turn-off protection.When lithium battery group total voltage arrives minimum or ceiling voltage point, also can carry out the circuit turn-off protection
Over-voltage detection circuit 7 comprises triode Q42, resistance R 49, R50 and capacitor C 46, and resistance R 49, R50 and capacitor C 46 are connected with triode Q42.
The operation principle of over-voltage detection circuit 7 is: when the output circuit short circuit, by 1 pin of triode Q42 output short-circuit signal to control unit, turn-off discharge circuit switch Q34 then, the protection battery.
At any time, (comprise discharge or charged state) when battery surface is too high or too low for temperature, thermistor NTC provides signal and gives single-chip microcomputer 27 pin, controls charge and discharge switch Q32, Q34 then, turn-offs charge-discharge circuit 6.
The utility model also comprises charger testing circuit 9, current foldback circuit 4 and power circuit 3.Charger testing circuit 9 is connected with 23 pin of control unit 5.Current foldback circuit 4 is connected with 32 pin of control unit 5.Charger testing circuit 9 comprises triode Q21, resistance R 21,32, capacitor C 21, diode D21, and resistance R 21,32, capacitor C 21, diode D21 are connected with triode Q42.
The operation principle of charger testing circuit 9: when charger was plugged, triode Q21 provided 23 pin that signal is given control unit 5, turn-offed discharge circuit by control unit, when also promptly charging, can not carry out discharge work.
Lithium battery at least two joints in the utility model housing 1.The lithium battery that the utility model uses is seven joints.
Claims (8)
1. intelligent balance formula lithium battery power supply; comprise housing, be located at lithium battery and control circuit in the housing; it is characterized in that control circuit comprises control unit, charge-discharge circuit, balanced protection circuit, over-voltage detection circuit and temperature sensing circuit; charge-discharge circuit is connected with 14 pin of control unit; the balanced protection circuit is connected with 2 pin of control unit, and over-voltage detection circuit is connected with 27 pin with 1 pin of control unit respectively with temperature sensing circuit.
2. intelligent balance formula lithium battery power supply according to claim 1, it is characterized in that charge-discharge circuit comprises triode Q31, metal-oxide-semiconductor Q32, triode Q33, metal-oxide-semiconductor Q34, diode D02 and resistance R 37, Q31 is connected with 1 pin of metal-oxide-semiconductor Q32 by resistance R 32, and triode Q31 is connected with 4 pin of metal-oxide-semiconductor Q32 by resistance R 32; Triode Q33 is connected with 8 pin of metal-oxide-semiconductor Q32 by resistance R 36; Metal-oxide-semiconductor Q34 is connected with triode Q33 by resistance R 35, and diode D02 is connected with 1 pin of metal-oxide-semiconductor Q32.
3. intelligent balance formula lithium battery power supply according to claim 1, it is characterized in that the balanced protection circuit comprises chip U201, U211, U221, U231, U241, U251, U261, U101, U111, U121, U131, U141, U151 and U161, triode Q201, Q211, Q221, Q231, Q241, Q251, Q261, Q101, Q111, Q121, Q131, Q241, Q151 and Q161, light lotus root P101, P111, P121, P131, P141, P151 and P161; The CO pin of chip U201, U211, U221, U231, U241, U251, U261 is connected with triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 by corresponding resistance respectively, connects by triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 respectively between adjacent chips U201, U211, U221, U231, U241, U251, the U261; Triode Q201, Q211, Q221, Q231, Q241, Q251, Q261 are connected with shunt resistance R204 and R205, R214 and R215, R224 and R225, R234 and R235, R244 and R245, R254 and R255, R264 and R265 respectively; The CO pin of adjacent chips U101, U111, U121, U131, U141, U151 and U161 is connected by triode Q101, Q111, Q121, Q131, Q241, Q151 and Q161 respectively, is connected with light lotus root P101, P111, P121, P131, P141, P151 and P161 between adjacent chips U101, U111, U121, U131, U141, U151 and the U161 respectively.
4. intelligent balance formula lithium battery power supply according to claim 1 is characterized in that over-voltage detection circuit comprises triode Q42, resistance R 49, R50 and capacitor C 46, and resistance R 49, R50 and capacitor C 46 are connected with triode Q42.
5. intelligent balance formula lithium battery power supply according to claim 1 is characterized in that temperature sensing circuit comprises thermistor NTC, resistance R 26 and capacitor C 23, and resistance R 26 is connected with thermistor NTC, capacitor C 23 and thermistor NTC parallel connection.
6. intelligent balance formula lithium battery power supply according to claim 1 is characterized in that control unit adopts the MEGA48 single-chip microcomputer of ATMEL.
7. intelligent balance formula lithium battery power supply according to claim 1 is characterized in that lithium battery at least two joints in the housing.
8. intelligent balance formula lithium battery power supply according to claim 6 is characterized in that the lithium battery in the housing is seven joints.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201916522U CN201504110U (en) | 2009-08-17 | 2009-08-17 | Intelligent balanced lithium battery power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009201916522U CN201504110U (en) | 2009-08-17 | 2009-08-17 | Intelligent balanced lithium battery power supply |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201504110U true CN201504110U (en) | 2010-06-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009201916522U Expired - Lifetime CN201504110U (en) | 2009-08-17 | 2009-08-17 | Intelligent balanced lithium battery power supply |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201504110U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199304A (en) * | 2012-01-09 | 2013-07-10 | 苏州纳新新能源科技有限公司 | Intelligent equalized lithium ion battery apparatus |
| CN110429570A (en) * | 2019-08-16 | 2019-11-08 | 东莞启益电器机械有限公司 | A kind of multisection lithium battery multifunctional protection circuit |
-
2009
- 2009-08-17 CN CN2009201916522U patent/CN201504110U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103199304A (en) * | 2012-01-09 | 2013-07-10 | 苏州纳新新能源科技有限公司 | Intelligent equalized lithium ion battery apparatus |
| CN110429570A (en) * | 2019-08-16 | 2019-11-08 | 东莞启益电器机械有限公司 | A kind of multisection lithium battery multifunctional protection circuit |
| CN110429570B (en) * | 2019-08-16 | 2024-04-12 | 东莞启益电器机械有限公司 | Multi-functional protection circuit of multisection lithium cell |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: JIAXING RUIHAI MACHINERY HIGH-TECH. CO., LTD. Free format text: FORMER OWNER: JIAXING REFINED MECHANICS HI-TECH CO., LTD. Effective date: 20120525 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20120525 Address after: 314001 Xiuzhou District, Zhejiang Province Wang Jiang Jing Development Zone Patentee after: Jiaxing Refined Mechanics Hi-Tech Co., Ltd. Address before: Jiaxing City, Zhejiang province 314001 Wang Jiangjing Economic Development Zone Xinyue Road No. 7 Patentee before: Jiaxing Refined Mechanics Hi-Tech Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100609 |