CN101860054A - Charge management circuit of lithium-ion battery - Google Patents
Charge management circuit of lithium-ion battery Download PDFInfo
- Publication number
- CN101860054A CN101860054A CN201010165087A CN201010165087A CN101860054A CN 101860054 A CN101860054 A CN 101860054A CN 201010165087 A CN201010165087 A CN 201010165087A CN 201010165087 A CN201010165087 A CN 201010165087A CN 101860054 A CN101860054 A CN 101860054A
- Authority
- CN
- China
- Prior art keywords
- control chip
- ion battery
- lithium
- copped wave
- wave control
- 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.)
- Granted
Links
Images
Landscapes
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Secondary Cells (AREA)
Abstract
The invention applies to the field of electronic circuits, and provides a charge management circuit of a lithium-ion battery, which comprises a DC-DC conversion circuit and a constant current control chip, wherein the constant current control chip is connected between the cathode of the lithium-ion battery to be charged and the negative input terminal of an input power supply, and the DC-DC conversion circuit comprises a chopper control chip, an inductor, a first resistance, a second resistor, a fly-wheel diode and a first capacitor; wherein the value of the first resistance or the second resistance can be adjusted. The resistances in the DC-DC conversion circuit are designed into adjustable resistances, so that the output voltage of the DC-DC conversion circuit can be adjusted, thereby changing charge limit voltage so as to adapt to different lithium-ion batteries to be charged.
Description
Technical field
The invention belongs to electronic circuit field, relate in particular to a kind of charge management circuit of lithium-ion battery.
Background technology
At present, the various direct current input lithium electricity charge management circuits that exist on the market are all realized charge function by a lithium electricity Charge Management IC, be characterized in what output voltage and charging current were all determined by the IC internal circuit, it is a steady state value, wherein output voltage is exactly the charging deboost of lithium ion battery, is generally 4.2V.The defective of sort circuit is to change charging deboost (the charging deboost of polymer Li-ion battery and ferric phosphate lithium cell is different) according to the kind of battery, does not perhaps support to change the function that charge rate promptly changes charging current according to battery capacity.
Summary of the invention
The purpose of the embodiment of the invention is to provide a kind of charge management circuit of lithium-ion battery, is intended to solve the problem that existing lithium ion cell charging circuit can't change the charging deboost according to the kind of battery.
The embodiment of the invention is achieved in that a kind of charge management circuit of lithium-ion battery, comprises DC-DC change-over circuit and constant current control chip, and described constant current control chip is connected the negative pole of lithium ion battery to be charged and imports between the negative input end of power supply; Described DC-DC change-over circuit comprises:
Copped wave control chip, two input connect the positive and negative input of importing power supply respectively;
Inductance, the one end connects the output of described copped wave control chip, and the other end connects the positive pole of lithium ion battery to be charged;
First resistance, the one end connects the positive pole of lithium ion battery to be charged, and the other end connects the feedback end of described copped wave control chip;
Second resistance, the one end connects the feedback end of described copped wave control chip, and the other end connects the earth terminal of described copped wave control chip;
Fly-wheel diode, its anode connects the earth terminal of described copped wave control chip, and negative electrode connects the output of described copped wave control chip; And
First electric capacity, the one end connects the feedback end of described copped wave control chip, and the other end connects the earth terminal of described copped wave control chip;
The resistance value of described first resistance or described second resistance is adjustable.
In the embodiment of the invention,, make the Adjustable Output Voltage of DC-DC change-over circuit can change the charging deboost to adapt to different lithium ion batteries to be charged by being adjustable resistance with the resistive arrangement in the DC-DC change-over circuit.
Description of drawings
Fig. 1 is the structure chart of the charge management circuit of lithium-ion battery that provides of the embodiment of the invention;
Fig. 2 is a kind of physical circuit figure of circuit structure shown in Figure 1.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In the embodiment of the invention, resistance in the DC-DC change-over circuit adopts adjustable resistance to realize, thereby makes the Adjustable Output Voltage of DC-DC change-over circuit.It is replaceable simultaneously can also to design the constant current control chip in circuit, and the user can select the constant current control chip of different current specification according to the actual requirements for use.
Fig. 1 shows the structure of the charge management circuit of lithium-ion battery that the embodiment of the invention provides, and for convenience of description, only shows the part relevant with present embodiment.
With reference to Fig. 1, charge management circuit of lithium-ion battery comprises DC-DC change-over circuit 1 and constant current control chip 2, constant current control chip 2 is connected between the negative pole and input power supply of lithium ion battery BATTERY to be charged, DC-DC change-over circuit 1 comprises the copped wave control chip, inductance L, first resistance R 1, second resistance R 2, the sustained diode and first capacitor C 1, wherein, two inputs of copped wave control chip are just connecting the input power supply respectively, negative input end, one end of inductance L connects the output SW of copped wave control chip, the other end connects the positive pole of lithium ion battery BATTERY to be charged, one end of first resistance R 1 connects the positive pole of lithium ion battery BATTERY to be charged, the other end connects the feedback end FB of copped wave control chip, second resistance R, 2 one ends connect the feedback end FB of copped wave control chip, and the other end connects the earth terminal GND of copped wave control chip.Sustained diode is used for the afterflow of copped wave control chip, and wherein the anode of sustained diode is connected the earth terminal GND of copped wave control chip, and negative electrode is connected the output SW of copped wave control chip.First capacitor C, 1 one ends connect the feedback end FB of copped wave control chip, and the other end connects the earth terminal GND of copped wave control chip, are used for the clutter of filtering feedback voltage signal.
In the embodiment of the invention, the resistance value of first resistance R 1 or second resistance R 2 is adjustable, the effect of DC/DC change-over circuit 1 is the charging deboost that input voltage is adjusted into lithium ion battery to be charged, general polymerization thing lithium ion battery and common lithium ion battery deboost are 4.2V, the deboost of ferric phosphate lithium cell is 3.65V, can adjust output voltage (OUTPUT) very easily by adjusting resistance value, suppose that input voltage input is 5V, R1, R2 gets the suitable value of a combination makes OUTPUT equal 4.2V, so this circuit just can for single-unit lithium electricity (as 18650 lithium ion batteries or battery of mobile phone) charged, the value that changes R1 or R2 makes OUTPUT equal 3.65V, and this circuit has charged just can for the ferric phosphate lithium cell of single-unit or more piece parallel connection so.
Further, between the earth terminal GND of the positive pole of lithium ion battery BATTERY to be charged and copped wave control chip, also be connected with second capacitor C 2, be used for the smooth output voltage signal.
In the embodiment of the invention, for further realizing the charging current adjustable size, it is replaceable that constant current control chip 2 is set, for example can be designed to the same slot of similar SIM cards of mobile phones, the effect of constant current control chip 2 is charging currents that lithium ion battery to be charged is crossed in steady flow, current value can require to change to the difference in charging interval along with the amount of capacity of battery and user, and different demand users selects for use the constant current control chip of different current specification to get final product.If give certain battery charge with this circuit, charging current is 300mA, the charging interval needs 4 hours, if customer requirements will foreshorten to two hours the charging interval, the specification that then can change the constant current chip strengthens charging current and shortens the charging interval.
Above-mentioned lithium ion battery to be charged can be lithium polymer battery or ferric phosphate lithium cell, can be single-unit, also can be the more piece parallel connection.
Fig. 2 is a kind of specific embodiment of circuit structure shown in Figure 1, U1 is the DC/DC control chip, D1, L1, R1, R2, R3, R4, C1, C2, C7 are its peripheral circuits, the voltage that to import DC4-10V by the work of U1 and peripheral circuit thereof is adjusted to 3.65V and is added to the battery two ends, U2, U3 are two constant current chips, the specification of each is 350mA, and two are controlled at 700mA with charging current together; The present charging interval is 8 hours, if the user needs to foreshorten to 4 hours the charging interval now, so the specification of U2, U3 is replaced by 700mA and gets final product.
In the embodiment of the invention,, make the Adjustable Output Voltage of DC-DC change-over circuit can change the charging deboost to adapt to different lithium ion batteries to be charged by being adjustable resistance with the resistive arrangement in the DC-DC change-over circuit.It is replaceable simultaneously can also to design the constant current control chip in circuit, and the user can select the constant current control chip of different current specification according to the actual requirements for use, makes that the length in charging interval is adjustable flexibly.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (4)
1. a charge management circuit of lithium-ion battery is characterized in that, comprises DC-DC change-over circuit and constant current control chip, and described constant current control chip is connected the negative pole of lithium ion battery to be charged and imports between the negative input end of power supply; Described DC-DC change-over circuit comprises:
Copped wave control chip, two input connect the positive and negative input of importing power supply respectively;
Inductance, the one end connects the output of described copped wave control chip, and the other end connects the positive pole of lithium ion battery to be charged;
First resistance, the one end connects the positive pole of lithium ion battery to be charged, and the other end connects the feedback end of described copped wave control chip;
Second resistance, the one end connects the feedback end of described copped wave control chip, and the other end connects the earth terminal of described copped wave control chip;
Fly-wheel diode, its anode connects the earth terminal of described copped wave control chip, and negative electrode connects the output of described copped wave control chip; And
First electric capacity, the one end connects the feedback end of described copped wave control chip, and the other end connects the earth terminal of described copped wave control chip;
The resistance value of described first resistance or described second resistance is adjustable.
2. charge management circuit of lithium-ion battery as claimed in claim 1 is characterized in that, also is connected with second electric capacity between the earth terminal of the positive pole of lithium ion battery to be charged and described copped wave control chip.
3. charge management circuit of lithium-ion battery as claimed in claim 1 is characterized in that, described constant current control chip is replaceable.
4. charge management circuit of lithium-ion battery as claimed in claim 1 is characterized in that, described lithium ion battery to be charged is lithium polymer battery or ferric phosphate lithium cell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165087 CN101860054B (en) | 2010-04-29 | 2010-04-29 | Charge management circuit of lithium-ion battery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010165087 CN101860054B (en) | 2010-04-29 | 2010-04-29 | Charge management circuit of lithium-ion battery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101860054A true CN101860054A (en) | 2010-10-13 |
| CN101860054B CN101860054B (en) | 2013-03-20 |
Family
ID=42945774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010165087 Active CN101860054B (en) | 2010-04-29 | 2010-04-29 | Charge management circuit of lithium-ion battery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101860054B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051013A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Transferring connection device in charging process of intelligent vehicle-mounted terminal |
| CN103051007A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Charger of intelligent vehicle-mounted terminal |
| WO2015027548A1 (en) * | 2013-08-30 | 2015-03-05 | 吉瑞高新科技股份有限公司 | Electronic cigarette and battery component thereof |
| CN107070229A (en) * | 2016-12-20 | 2017-08-18 | 南京海普水文科技有限公司 | A kind of ADCP transmitting source levels conditioned circuit and method |
| CN112467850A (en) * | 2020-12-09 | 2021-03-09 | 宗汉电通技术(深圳)有限公司 | TYPE-C-based digital lithium ion battery management scheme |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5642029A (en) * | 1994-03-03 | 1997-06-24 | Sgs-Thomson Microelectronics S.R.L. | Constant current battery charger with auxiliary output for portable apparatus |
| CN1402901A (en) * | 1999-12-10 | 2003-03-12 | 吉莱特公司 | Battery pack |
| CN1633739A (en) * | 2002-02-15 | 2005-06-29 | 吉莱特公司 | Hybrid power supply |
| CN101552483A (en) * | 2007-10-25 | 2009-10-07 | 日立工机株式会社 | Charging device |
-
2010
- 2010-04-29 CN CN 201010165087 patent/CN101860054B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5642029A (en) * | 1994-03-03 | 1997-06-24 | Sgs-Thomson Microelectronics S.R.L. | Constant current battery charger with auxiliary output for portable apparatus |
| CN1402901A (en) * | 1999-12-10 | 2003-03-12 | 吉莱特公司 | Battery pack |
| CN1633739A (en) * | 2002-02-15 | 2005-06-29 | 吉莱特公司 | Hybrid power supply |
| CN101552483A (en) * | 2007-10-25 | 2009-10-07 | 日立工机株式会社 | Charging device |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103051013A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Transferring connection device in charging process of intelligent vehicle-mounted terminal |
| CN103051007A (en) * | 2011-10-15 | 2013-04-17 | 成都锐奕信息技术有限公司 | Charger of intelligent vehicle-mounted terminal |
| WO2015027548A1 (en) * | 2013-08-30 | 2015-03-05 | 吉瑞高新科技股份有限公司 | Electronic cigarette and battery component thereof |
| US9801414B2 (en) | 2013-08-30 | 2017-10-31 | Huizhou Kimree Technology Co., Ltd. Shenzhen | Electronic cigarette and battery assembly thereof |
| CN107070229A (en) * | 2016-12-20 | 2017-08-18 | 南京海普水文科技有限公司 | A kind of ADCP transmitting source levels conditioned circuit and method |
| CN112467850A (en) * | 2020-12-09 | 2021-03-09 | 宗汉电通技术(深圳)有限公司 | TYPE-C-based digital lithium ion battery management scheme |
| CN112467850B (en) * | 2020-12-09 | 2021-10-29 | 宗汉电通技术(深圳)有限公司 | Digital lithium ion battery management device based on TYPE-C |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101860054B (en) | 2013-03-20 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103378636A (en) | Mobile power source control chip and mobile power source with same | |
| CN212784793U (en) | Battery charging and discharging circuit | |
| CN101860054B (en) | Charge management circuit of lithium-ion battery | |
| CN104767252A (en) | Tablet computer | |
| CN102629825A (en) | Circuit structure of realizing synchronous buck-type charging and boost-type power supply by using single inductor | |
| CN202856409U (en) | Mobile phone boost charging wire and mobile phone charging system | |
| CN204615444U (en) | Panel computer | |
| CN204290475U (en) | Power supply switch circuit and electronic equipment | |
| CN102916470B (en) | A kind of energy content of battery carry circuit for energy trasfer between series-connected cell | |
| CN100442629C (en) | Linear charger | |
| CN201750187U (en) | Solar-energy charging device | |
| CN100414810C (en) | Voltage identification short circuit protection constant current voltage stabilizing circuit | |
| CN103259295A (en) | Portable electronic device with solar charging function | |
| CN204967352U (en) | Mobile power source | |
| CN205202916U (en) | Uninterruptible power supply circuit | |
| CN102097839B (en) | Voltage and current adaptive control circuit | |
| CN208806636U (en) | A kind of cellular phone power supplies circuit | |
| CN207588535U (en) | A kind of voltage boosting and stabilizing circuit based on the charging of the mobile phone temperature difference | |
| CN203261057U (en) | Novel numerical control charger | |
| CN202616999U (en) | Circuit configuration for realizing synchronous step-down charging and step-up power supply by using single inductor | |
| CN203722214U (en) | Self-switching-off starting circuit powered by rechargeable battery | |
| CN201130863Y (en) | Charger circuit for automobile | |
| CN204928207U (en) | But lithium ion battery of pressure regulating group | |
| CN206099488U (en) | Universal cell phone power supply circuit | |
| CN219477614U (en) | Battery charging circuit with adjustable negative electrode voltage and electronic equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |