CN203039408U - Lithium battery power source - Google Patents
Lithium battery power source Download PDFInfo
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- CN203039408U CN203039408U CN 201320051531 CN201320051531U CN203039408U CN 203039408 U CN203039408 U CN 203039408U CN 201320051531 CN201320051531 CN 201320051531 CN 201320051531 U CN201320051531 U CN 201320051531U CN 203039408 U CN203039408 U CN 203039408U
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Abstract
The utility model discloses a lithium battery power source including a lithium battery, an output switch, a USB control circuit, an USB output interface, an over-current protection circuit, a control circuit, a 12V output terminal and an MCU (Micro Control Unit) control circuit. One end of the output switch is connected with an output terminal of the lithium battery while the other end of the output switch is connected with the USB control circuit and an input terminal of the over-current protection circuit. An output terminal of the USB control circuit is connected with the USB output interface. An output terminal of the over-current is connected with an input terminal of the control circuit. An output terminal of the control circuit is connected with the 12V output terminal. An output terminal of the 12V output terminal is connected to an input terminal of the MCU control circuit. An output terminal of the MCU control circuit is connected with another input terminal of the control circuit. According to the utility model, the lithium battery is adopted intelligently as an energy storage component for outputting large current for an automobile for starting and a 5V USB interface power source at the same time.
Description
Technical field
The utility model belongs to power technique fields, relates to a kind of lithium battery power supply especially.
Background technology
Lithium battery is extensive use of gradually because it has the following advantages: (1) is common batteries lithium battery energy density height relatively, has reached 460-600Wh/kg at present, is about 6-7 times of lead-acid battery; (2) the lead-acid battery lithium battery is in light weight relatively, and weight is about the 1/5-6 of plumbic acid product under the equal volume; (3) lithium battery is longer relatively useful life, can reach useful life more than 6 years, and LiFePO 4 has and can use 1000 times record for anodal battery charges and discharge with 1CDOD; (4) the high low temperature adaptability of lithium battery is strong, can be at-20 ℃--and use under 60 ℃ the environment, through technologic processing, even can under-45 ℃ of environment, use; (5) environmental protection no matter produce, use and scrap, does not contain, does not produce yet poisonous and harmful heavy metallic element and materials such as any lead, mercury, cadmium.Because lithium battery has above advantage, at the car emergency power technique fields, be necessary to adopt lithium battery as its accumulation of energy parts it to be developed in fact.
The utility model content
For addressing the above problem, the purpose of this utility model is to provide a kind of lithium battery power supply, controls lithium battery intelligently for employing and exports big electric current simultaneously to automobile starting and 5VUSB interface power supply as the accumulation of energy parts.
For achieving the above object, the technical solution of the utility model is:
A kind of lithium battery power supply; comprise lithium battery; the output switch; the USB control circuit; the USB output interface; current foldback circuit; control circuit; 12V lead-out terminal and micro-control unit MCU control circuit; described output switch one end connects the output of lithium battery; the other end of described output switch connects the input of described USB control circuit and described current foldback circuit respectively; the output of described USB control circuit connects the USB output interface, and the output of described current foldback circuit connects the input of described control circuit, and the output of described control circuit connects described 12V lead-out terminal; the input of the output input MCU control circuit of described 12V lead-out terminal, the output of described MCU control circuit connects the another input of described control circuit.
Preferably, described current foldback circuit is for can recover fuse.
Preferably, described USB control circuit comprises fixed voltage three terminal integrated voltage stabilizer 78L05, electrochemical capacitor and electric capacity, the input of described fixed voltage three terminal integrated voltage stabilizer 78L05 connects the output of output switch, and the output of described fixed voltage three terminal integrated voltage stabilizer 78L05 respectively and connect the input that exports the USB output interface behind electrochemical capacitor and the electric capacity to.
Preferably; described control circuit comprises relay; diode; triode; first resistance and second resistance; the common port of relay connects the input of 12V lead-out terminal; the adhesive end of relay; the negative electrode of positive control end and diode is connected the output of current foldback circuit; the open end sky of relay connects; the negative control end of relay and the positive pole of diode connect the collector electrode of triode; the base stage of triode connects an end of first resistance and second resistance, and the emitter of triode connects the other end and the ground of second resistance, and the other end of first resistance connects the output of MCU control circuit.
Preferably, described MCU control circuit comprises single-chip microcomputer EM78P260, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, the pin P50 of single-chip microcomputer EM78P260 connects the series connection end of the 3rd resistance and the 4th resistance, the other end of the 4th resistance connects the output of 12V lead-out terminal and an end of the 5th resistance, the other end of the 5th resistance connects the power pin of single-chip microcomputer EM78P260 and an end of the 5th resistance, the other end of the 5th resistance connects the reset pin of single-chip microcomputer EM78P260, and the output pin P54 of single-chip microcomputer EM78P260 connects the another input of control circuit.
By above technical scheme, whether the load connection of the detection 12V lead-out terminal that the utility model can be intelligent is correct, and the short circuit defencive function is provided, and at the USB interface output of 5V, provides stable 5V output by adopting the excellent chip reduction voltage circuit of performance.
Description of drawings
Fig. 1 is the structure principle chart of the lithium battery power supply of the utility model embodiment;
Fig. 2 is the circuit theory diagrams of USB control circuit of the lithium battery power supply of the utility model embodiment;
Fig. 3 is the circuit theory diagrams of control circuit of the lithium battery power supply of the utility model embodiment;
Fig. 4 is the circuit theory diagrams of MCU control circuit of the lithium battery power supply of the utility model embodiment.
Description of reference numerals: 101-lithium battery; 102-exports switch; The 103-USB control circuit; The 104-USB output interface; The 105-current foldback circuit; The 106-control circuit; The 107-12V lead-out terminal; The 108-MCU control circuit.
Embodiment
In order to make the purpose of this utility model, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the utility model is further elaborated.Should be appreciated that specific embodiment described herein only in order to explaining the utility model, and be not used in restriction the utility model.
On the contrary, the utility model contain any by claim definition in substituting of making of marrow of the present utility model and scope, modification, equivalent method and scheme.Further, in order to make the public the utility model is had a better understanding, in hereinafter details of the present utility model being described, detailed some specific detail sections of having described.There is not the description of these detail sections can understand the utility model fully for a person skilled in the art yet.
With reference to figure 1; be depicted as the schematic diagram of the lithium battery power supply of the utility model embodiment; it comprises lithium battery 101; output switch 102; USB control circuit 103; USB output interface 104; current foldback circuit 105; control circuit 106; 12V lead-out terminal 107 and micro-control unit MCU control circuit 108; output switch 102 1 ends connect the output of lithium battery 101; the other end of output switch 102 connects the input of USB control circuit 103 and current foldback circuit 105 respectively; the output of USB control circuit 103 connects USB output interface 104; the output of current foldback circuit 105 connects the input of control circuit 106; the output of control circuit 106 connects 12V lead-out terminal 107, the input of the output input MCU control circuit 108 of 12V lead-out terminal 107, and the output of MCU control circuit 108 connects the another input of control circuit 106.Lithium battery 101 is the output of 12V direct voltage.During work, output switch 102 is connected, and wherein leads up to 103 step-downs of USB control circuit, voltage stabilizing and filtering afterwards through USB output interface 104 output 5V voltages; Other one tunnel output 12V direct voltage, detect and judge whether the connection of the both positive and negative polarity clip of 12V lead-out terminal and load is correct through MCU control circuit 108: when (1) connects the load short circuit as if the both positive and negative polarity clip that detects 12V lead-out terminal 107, current foldback circuit 105 starts outage, the protection load; (2) if when detecting the both positive and negative polarity reversal connection, control circuit 106 is not exported charging current yet; (3) if both positive and negative polarity clip connection circuit operate as normal when correct export big electric current steam supply car and start.
In the concrete application example, current foldback circuit 105 is for can recover fuse.When the load end short circuit of 12V lead-out terminal, its self-heating increases its impedance, electric current is restricted to enough little, plays the overcurrent protection effect.
Referring to Fig. 2, in a concrete application example, the USB control circuit comprises fixed voltage three terminal integrated voltage stabilizer 78L05, electrochemical capacitor C15 and capacitor C 21, the input of fixed voltage three terminal integrated voltage stabilizer 78L05 connects the output of output switch 102, and the output of fixed voltage three terminal integrated voltage stabilizer 78L05 respectively and connect the input that exports the USB output interface after electrochemical capacitor C15 and the capacitor C 21 to.Wherein fixed voltage three terminal integrated voltage stabilizer 78L05 is made by ST Microelectronics, by the input of the stable 5V magnitude of voltage USB output interface of output after the filtering of passing through electrochemical capacitor C15 and capacitor C 21 behind the 78L05 lowering and stabilizing blood pressure again.
Referring to Fig. 3; in a concrete application example; control circuit 106 comprises relay K 1; diode D6; triode Q2; first resistance R 29 and second resistance R 24; the common port of relay K 1 connects the input of 12V lead-out terminal 107; the adhesive end of relay K 1; the positive control end is connected the output of current foldback circuit 105 with the negative electrode of diode D6; the open end sky of relay K 1 connects; the negative control end of relay K 1 and the positive pole of diode D6 connect the collector electrode of triode Q2; the base stage of triode Q2 connects an end of first resistance R 29 and second resistance R 24; the emitter of triode Q2 connects the other end and the ground of second resistance R 24, and the other end of first resistance R 29 connects the output of MCU control circuit 108.Referring to Fig. 4, MCU control circuit 108 comprises single-chip microcomputer EM78P260, the 3rd resistance R 1, the 4th resistance R 2, the 5th resistance R 3 and the 6th resistance R 25, the pin P50 of single-chip microcomputer EM78P260 connects the series connection end of the 3rd resistance R 1 and the 4th resistance R 2, the other end of the 4th resistance R 2 connects the output of 12V lead-out terminal and an end of the 5th resistance R 3, the other end of the 5th resistance R 3 connects the power pin VCC of single-chip microcomputer EM78P260 and an end of the 5th resistance R 3, the other end of the 5th resistance R 3 connects the reset pin RES of single-chip microcomputer EM78P260, and the output pin P54 of single-chip microcomputer EM78P260 connects the another input of control circuit 106.By above setting; MCU control circuit 108 judges whether that by the voltage of AD sampling 12V lead-out terminal output connection is correct; correctly then drive triode Q2 conducting; drive relay K 1 adhesive; reach the output purpose; MCU control circuit 108 is constantly monitored the battery trend in the process of output, and reaches protective effect.
The above only is preferred embodiment of the present utility model; not in order to limit the utility model; all any modifications of within spirit of the present utility model and principle, doing, be equal to and replace and improvement etc., all should be included within the protection range of the present utility model.
Claims (5)
1. lithium battery power supply; it is characterized in that; comprise lithium battery (101); output switch (102); USB control circuit (103); USB output interface (104); current foldback circuit (105); control circuit (106); 12V lead-out terminal (107) and micro-control unit MCU control circuit (108); described output switch (102) one ends connect the output of lithium battery (101); the other end of described output switch (102) connects the input of described USB control circuit (103) and described current foldback circuit (105) respectively; the output of described USB control circuit (103) connects USB output interface (104); the output of described current foldback circuit (105) connects the input of described control circuit (106); the output of described control circuit (106) connects described 12V lead-out terminal (107); the input of the output input MCU control circuit (108) of described 12V lead-out terminal (107), the output of described MCU control circuit (108) connects the another input of described control circuit (106).
2. lithium battery power supply according to claim 1 is characterized in that, described current foldback circuit (105) is for can recover fuse.
3. lithium battery power supply according to claim 1, it is characterized in that, described USB control circuit (103) comprises fixed voltage three terminal integrated voltage stabilizer 78L05, electrochemical capacitor and electric capacity, the input of described fixed voltage three terminal integrated voltage stabilizer 78L05 connects the output of output switch, and the output of described fixed voltage three terminal integrated voltage stabilizer 78L05 respectively and connect the input that exports the USB output interface behind electrochemical capacitor and the electric capacity to.
4. lithium battery power supply according to claim 1; it is characterized in that; described control circuit (106) comprises relay; diode; triode; first resistance and second resistance; the common port of relay connects the input of 12V lead-out terminal; the adhesive end of relay; the negative electrode of positive control end and diode is connected the output of current foldback circuit; the open end sky of relay connects; the negative control end of relay and the positive pole of diode connect the collector electrode of triode; the base stage of triode connects an end of first resistance and second resistance; the emitter of triode connects the other end and the ground of second resistance, and the other end of first resistance connects the output of MCU control circuit (108).
5. lithium battery power supply according to claim 1, it is characterized in that, described MCU control circuit (108) comprises single-chip microcomputer EM78P260, the 3rd resistance, the 4th resistance, the 5th resistance and the 6th resistance, the pin P50 of single-chip microcomputer EM78P260 connects the series connection end of the 3rd resistance and the 4th resistance, the other end of the 4th resistance connects the output of 12V lead-out terminal and an end of the 5th resistance, the other end of the 5th resistance connects the power pin of single-chip microcomputer EM78P260 and an end of the 5th resistance, the other end of the 5th resistance connects the reset pin of single-chip microcomputer EM78P260, and the output pin P54 of single-chip microcomputer EM78P260 connects the another input of control circuit (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051531 CN203039408U (en) | 2013-01-30 | 2013-01-30 | Lithium battery power source |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320051531 CN203039408U (en) | 2013-01-30 | 2013-01-30 | Lithium battery power source |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203039408U true CN203039408U (en) | 2013-07-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320051531 Expired - Fee Related CN203039408U (en) | 2013-01-30 | 2013-01-30 | Lithium battery power source |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203039408U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979856A (en) * | 2014-04-04 | 2015-10-14 | 苏州新逸喆电子科技有限公司 | 12V jump starter using ternary lithium battery |
| CN107089158A (en) * | 2017-03-28 | 2017-08-25 | 深圳市华宝新能源股份有限公司 | Lithium battery car, which is filled, to be put |
-
2013
- 2013-01-30 CN CN 201320051531 patent/CN203039408U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104979856A (en) * | 2014-04-04 | 2015-10-14 | 苏州新逸喆电子科技有限公司 | 12V jump starter using ternary lithium battery |
| CN107089158A (en) * | 2017-03-28 | 2017-08-25 | 深圳市华宝新能源股份有限公司 | Lithium battery car, which is filled, to be put |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130703 Termination date: 20200130 |