CN202206151U - Lithium battery combination power supply system - Google Patents
Lithium battery combination power supply system Download PDFInfo
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- CN202206151U CN202206151U CN2011202876290U CN201120287629U CN202206151U CN 202206151 U CN202206151 U CN 202206151U CN 2011202876290 U CN2011202876290 U CN 2011202876290U CN 201120287629 U CN201120287629 U CN 201120287629U CN 202206151 U CN202206151 U CN 202206151U
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- lithium battery
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- power supply
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Abstract
The utility model relates to a lithium battery combination power supply system, comprising a DC/DC charging circuit, a power supply terminal of which is in connection with the direct current and an output terminal of which is in connection with input terminals of a lithium battery pack and a protection circuit; output terminals of the lithium battery pack and the protection circuit are in connection with an input terminal of an output control circuit; a power supply terminal of the output control circuit is in connection with the direct current and an output terminal of the output control circuit is in connection with load. According to the utility model, the output control circuit possesses an intelligent output conversion function; when the input voltage meets certain conditions, output conversion can be performed between the input voltage and the lithium battery pack, the influence between the input voltage and the lithium battery pack can be avoided, and the power supply for hand-held machine equipment for outdoor use can be realized. The lithium battery combination power supply system realizes under-voltage protection, over-voltage protection, over-current protection and charge and discharge separation control for an inner lithium battery pack and realizes intelligent switching between external power source power supply and lithium battery pack power supply.
Description
Technical field
The utility model relates to the electric power system field, especially a kind of lithium battery associating power supply system.
Background technology
Beidou satellite navigation system is regional active three-dimensional satellite fix and the communication system (CNSS) that China develops voluntarily, and it has oneself technical indicator and instructions for use for the power supply aspect.Big Dipper hand-held set needs to use battery system and external power supply associating power supply out of doors the time, and when associating power supply, the conventional battery system can't automatically switch with external power supply.
The utility model content
The purpose of the utility model be to provide a kind of can be automatically and external power supply switch, solve the lithium battery associating power supply system that Big Dipper hand-held set uses powerup issue out of doors.
For realizing above-mentioned purpose; The utility model has adopted following technical scheme: a kind of lithium battery associating power supply system comprises the DC/DC charging circuit, its power supply termination direct current; Its output links to each other with the input of lithium battery group and protective circuit; The output of lithium battery group and protective circuit links to each other with the input of output control circuit, the power supply termination direct current of output control circuit, the output termination load of output control circuit.
Can know by technique scheme; Output control circuit in the utility model has intelligence output translation function; When input voltage reaches certain condition; Can between input voltage and lithium battery group, do the output conversion, and can avoid input voltage and lithium battery group are impacted each other, realize the power supply that handset apparatus uses out of doors.The utility model has been accomplished under-voltage protection, overvoltage protection, overcurrent protection for inner lithium battery group and has been discharged and recharged separately control, can accomplish the intelligence switching for external power source and the power supply of lithium battery group.
Description of drawings
Fig. 1 is the circuit block diagram of the utility model.
Embodiment
A kind of lithium battery associating power supply system; Comprise DC/DC charging circuit 1, its power supply termination direct current, its output links to each other with the input of lithium battery group and protective circuit 2; The output of lithium battery group and protective circuit 2 links to each other with the input of output control circuit 3; The power supply termination direct current of output control circuit 3, the output termination load of output control circuit 3, as shown in Figure 1.Said lithium battery group adopts high performance lithium battery, and fine flash-over characteristic is all arranged under the low temperature and the condition of high temperature, and the lithium battery group is by 8 batteries, and four strings two are also formed.The wide input voltage range of said DC/DC charging circuit 1; Charge characteristic to lithium ion battery; DC/DC charging circuit 1 adopts constant current to add constant voltage charging method; Can confirm that according to battery capacity and charging interval continuous current is 1100mA, also can confirm that constant voltage voltage is 16.8V according to 8 joint lithium ion batteries, four strings two.
As shown in Figure 1; Described DC/DC charging circuit 1 is made up of the pwm circuit that boosts, step-down pwm circuit, first and second current rectifying and wave filtering circuit, first and second constant-voltage control circuit and first and second voltage sampling circuit; The power supply termination direct current of the described pwm circuit that boosts; Boost pwm circuit, first current rectifying and wave filtering circuit, first voltage sampling circuit and first constant-voltage control circuit constitutes series loop successively; The output of first current rectifying and wave filtering circuit links to each other with the input of step-down pwm circuit; Step-down pwm circuit, second current rectifying and wave filtering circuit, second voltage sampling circuit and second constant-voltage control circuit constitute series loop successively, and the output of second current rectifying and wave filtering circuit links to each other with the input of lithium battery group and protective circuit 2.
As shown in Figure 1, the power end of the described pwm circuit that boosts, output control circuit 3 all connects 9～32V direct current, and described output control circuit 3 adopts functional switch, mainly is to be used for switching the output power supply.The described pwm circuit that boosts adopts the UC3843 control chip, and the UC3843 control chip is high-performance, fixed frequency, the current mode controller that is specifically designed to the DC/DC converter.The step-down pwm circuit adopts the LM2672 control chip, and the LM2672 control chip is a step down switching voltage regulator, and output current is 1.2A, and input voltage range is 8～40V, Adjustable Output Voltage, and conversion efficiency is greater than 90%.Through the input behind the pwm circuit that boosts, be output as the direct voltage of 16.8V behind the process step-down pwm circuit, and have constant current 1.2A output.When input voltage during less than 18V, the pwm circuit that boosts is started working, and boosts to 18V voltage; When input voltage during greater than 18V, the pwm circuit that boosts just quits work, and input voltage directly is loaded on the step-down pwm circuit.
As shown in Figure 1; Described lithium battery group and protective circuit 2 are made up of charge/discharge control circuit, charging control circuit, lithium battery group and battery control protection electric circuit; The input of described charging control circuit links to each other with the output of second current rectifying and wave filtering circuit, battery control protection electric circuit respectively; The output of charging control circuit links to each other with the input of charge/discharge control circuit through the lithium battery group; The output of battery control protection electric circuit links to each other with the input of charge/discharge control circuit, and the output of charge/discharge control circuit links to each other with the input of output control circuit 3.The battery control protection electric circuit mainly is a voltage of gathering each batteries, makes the judgement of under-voltage, overvoltage and short circuit, through the charge/discharge of control charging control circuit with charge/discharge control circuit realization battery pack.
As shown in Figure 1; The output of the described pwm circuit that boosts links to each other with the input of first current rectifying and wave filtering circuit; The output of first current rectifying and wave filtering circuit links to each other with the input of first voltage sampling circuit; The output of first voltage sampling circuit links to each other with the input of first constant-voltage control circuit, and the output of first constant-voltage control circuit links to each other with the input of the pwm circuit that boosts; The output of step-down pwm circuit links to each other with the input of second current rectifying and wave filtering circuit; The output of second current rectifying and wave filtering circuit links to each other with the input of second voltage sampling circuit; The output of second voltage sampling circuit links to each other with the input of second constant-voltage control circuit, and the output of second constant-voltage control circuit links to each other with the input of step-down pwm circuit.
In sum, the advantage of the utility model is: the charging wide input voltage range, and input voltage is: 9V～32VDC; The charging conversion efficiency is high; Intelligence output conversion when input voltage arrives certain condition, can be done the output conversion between input voltage and lithium battery group, and input voltage and lithium battery group can not influence each other; Lithium battery group and protective circuit 2 are separately controlled input and output with charging control circuit and charge/discharge control circuit, accomplish to be independent of each other; Have short-circuit protection function, under-voltage protection, overvoltage protection and overcurrent protection function; Operating temperature range is wide, can adapt to-40～+ 85 ℃ of working temperatures, can adapt to Normal Environmental Temperature and use.
Claims (6)
1. lithium battery associating power supply system; It is characterized in that: comprise DC/DC charging circuit (1); Its power supply termination direct current, its output links to each other with the input of lithium battery group and protective circuit (2), and the output of lithium battery group and protective circuit (2) links to each other with the input of output control circuit (3); The power supply termination direct current of output control circuit (3), the output termination load of output control circuit (3).
2. lithium battery associating power supply according to claim 1 system; It is characterized in that: described DC/DC charging circuit (1) is made up of the pwm circuit that boosts, step-down pwm circuit, first and second current rectifying and wave filtering circuit, first and second constant-voltage control circuit and first and second voltage sampling circuit; The power supply termination direct current of the described pwm circuit that boosts; Boost pwm circuit, first current rectifying and wave filtering circuit, first voltage sampling circuit and first constant-voltage control circuit constitutes series loop successively; The output of first current rectifying and wave filtering circuit links to each other with the input of step-down pwm circuit; Step-down pwm circuit, second current rectifying and wave filtering circuit, second voltage sampling circuit and second constant-voltage control circuit constitute series loop successively, and the output of second current rectifying and wave filtering circuit links to each other with the input of lithium battery group and protective circuit (2).
3. lithium battery associating power supply according to claim 2 system, it is characterized in that: the power end of the described pwm circuit that boosts, output control circuit (3) all connects 9～32V direct current, and described output control circuit (3) adopts functional switch.
4. lithium battery associating power supply according to claim 2 system; It is characterized in that: described lithium battery group and protective circuit (2) are made up of charge/discharge control circuit, charging control circuit, lithium battery group and battery control protection electric circuit; The input of described charging control circuit links to each other with the output of second current rectifying and wave filtering circuit, battery control protection electric circuit respectively; The output of charging control circuit links to each other with the input of charge/discharge control circuit through the lithium battery group; The output of battery control protection electric circuit links to each other with the input of charge/discharge control circuit, and the output of charge/discharge control circuit links to each other with the input of output control circuit (3).
5. lithium battery associating power supply according to claim 2 system; It is characterized in that: the output of the described pwm circuit that boosts links to each other with the input of first current rectifying and wave filtering circuit; The output of first current rectifying and wave filtering circuit links to each other with the input of first voltage sampling circuit; The output of first voltage sampling circuit links to each other with the input of first constant-voltage control circuit, and the output of first constant-voltage control circuit links to each other with the input of the pwm circuit that boosts; The output of step-down pwm circuit links to each other with the input of second current rectifying and wave filtering circuit; The output of second current rectifying and wave filtering circuit links to each other with the input of second voltage sampling circuit; The output of second voltage sampling circuit links to each other with the input of second constant-voltage control circuit, and the output of second constant-voltage control circuit links to each other with the input of step-down pwm circuit.
6. lithium battery associating power supply according to claim 2 system is characterized in that: the described pwm circuit that boosts adopts the UC3843 control chip, and the step-down pwm circuit adopts the LM2672 control chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202876290U CN202206151U (en) | 2011-08-10 | 2011-08-10 | Lithium battery combination power supply system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202876290U CN202206151U (en) | 2011-08-10 | 2011-08-10 | Lithium battery combination power supply system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202206151U true CN202206151U (en) | 2012-04-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202876290U Expired - Fee Related CN202206151U (en) | 2011-08-10 | 2011-08-10 | Lithium battery combination power supply system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202206151U (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166297A (en) * | 2013-03-11 | 2013-06-19 | 杭州电子科技大学 | Power-fail protection circuit without backup battery |
| CN106300561A (en) * | 2016-10-21 | 2017-01-04 | 成都前锋电子仪器有限责任公司 | A kind of switch power supply system |
| CN107134847A (en) * | 2017-05-25 | 2017-09-05 | 苏州日博飞能源科技有限公司 | A kind of wide input module formula DC UPS system |
| CN109873560A (en) * | 2019-03-14 | 2019-06-11 | 北京宇航系统工程研究所 | A kind of high-power high stability boosting power supply system |
| CN109980738A (en) * | 2019-04-08 | 2019-07-05 | 厦门兴卓科技有限公司 | A kind of intelligence DC-DC charger |
| CN110112811A (en) * | 2019-06-17 | 2019-08-09 | 厦门能加新能源科技有限公司 | A kind of power circuit |
| CN110417095A (en) * | 2019-08-08 | 2019-11-05 | 广州龙之杰科技有限公司 | A kind of air pressure output device and method adapting to Width funtion |
-
2011
- 2011-08-10 CN CN2011202876290U patent/CN202206151U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103166297A (en) * | 2013-03-11 | 2013-06-19 | 杭州电子科技大学 | Power-fail protection circuit without backup battery |
| CN103166297B (en) * | 2013-03-11 | 2015-06-17 | 杭州电子科技大学 | Power-fail protection circuit without backup battery |
| CN106300561A (en) * | 2016-10-21 | 2017-01-04 | 成都前锋电子仪器有限责任公司 | A kind of switch power supply system |
| CN107134847A (en) * | 2017-05-25 | 2017-09-05 | 苏州日博飞能源科技有限公司 | A kind of wide input module formula DC UPS system |
| CN107134847B (en) * | 2017-05-25 | 2023-10-24 | 苏州日博飞能源科技有限公司 | Wide input modular direct current uninterrupted power system |
| CN109873560A (en) * | 2019-03-14 | 2019-06-11 | 北京宇航系统工程研究所 | A kind of high-power high stability boosting power supply system |
| CN109873560B (en) * | 2019-03-14 | 2020-07-14 | 北京宇航系统工程研究所 | High-power high-stability boosting power supply system |
| CN109980738A (en) * | 2019-04-08 | 2019-07-05 | 厦门兴卓科技有限公司 | A kind of intelligence DC-DC charger |
| CN110112811A (en) * | 2019-06-17 | 2019-08-09 | 厦门能加新能源科技有限公司 | A kind of power circuit |
| CN110417095A (en) * | 2019-08-08 | 2019-11-05 | 广州龙之杰科技有限公司 | A kind of air pressure output device and method adapting to Width funtion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Lithium battery combination power supply system Effective date of registration: 20150505 Granted publication date: 20120425 Pledgee: Huizhou Merchants Bank Hefei Suixi road subbranch Pledgor: Anhui Gaocheng Electronic Technology Co.,Ltd. Registration number: 2015340000007 |
|
| PLDC | Enforcement, change and cancellation of contracts on pledge of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120425 Termination date: 20150810 |
|
| EXPY | Termination of patent right or utility model |