CN204349483U - A kind of control circuit of lithium battery group and wheelbarrow, balance car - Google Patents
A kind of control circuit of lithium battery group and wheelbarrow, balance car Download PDFInfo
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- CN204349483U CN204349483U CN201420741280.7U CN201420741280U CN204349483U CN 204349483 U CN204349483 U CN 204349483U CN 201420741280 U CN201420741280 U CN 201420741280U CN 204349483 U CN204349483 U CN 204349483U
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- control circuit
- lithium battery
- battery group
- resistance
- voltage
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Abstract
The utility model relates to a kind of control circuit and wheelbarrow, balance car of lithium battery group, and the control circuit of wherein said lithium battery group comprises: the row's pin connecting accumulator array, and each row's pin is suitable for the positive pole of the batteries of each parallel connection to draw respectively; One control circuit is suitable for the voltage gathering the extraction of each row's pin respectively, when judging that arbitrary storage battery is in under-voltage condition, controlling an acousto-optic warning unit and starting.The utility model is cancelled discharge prevention and just can be guaranteed wheelbarrow, balance car operationally battery pack can not power-off, thus greatly reduces because battery pack is broken the problem that the personnel that cause fall down; In addition, for taking into account the use safety of lithium battery group, when any single-unit battery tension is lower than under-voltage, utilizes emitting components (as LED lamp) or buzzer warning, carrying out reminding user and stop using.
Description
Technical field
The utility model relates to a kind of control circuit and wheelbarrow, balance car of lithium battery group.
Background technology
Along with the development of wheelbarrow, balance car technology, the popularity in market also increases thereupon.The trend that this product is ahead of fashions, the heat being subject to young people is held in both hands and likes.
Because this time to market (TTM) is not long, there will be the problem of some safety in use.Relatively distinct issues be exactly car in the unexpected power-off of ride, cause personnel to fall down, especially when high-speed cruising, danger is larger.
Lithium battery, due to itself safety issue, uses baffle when charging, electric discharge, prevents over-charging of battery, crosses and put.If but wheelbarrow, balance car are operationally, discharge prevention, once work, just means battery pack power-off, and wheelbarrow, balance car just cannot keep balance, and the personnel that cause fall down.
For these special circumstances, cancel discharge prevention and just can guarantee wheelbarrow, balance car operationally battery pack can not power-off, thus greatly reduce and even avoid the problems referred to above to occur.
Utility model content
The purpose of this utility model is to provide a kind of control circuit of lithium battery group, with solve wheelbarrow, balance car run time battery pack can not power-off.
In order to solve the problems of the technologies described above, the utility model provides a kind of control circuit of lithium battery group, it is characterized in that, comprising: the row's pin connecting accumulator array, and each row's pin is suitable for the positive pole of the batteries of each parallel connection to draw respectively; One control circuit is suitable for the voltage gathering the extraction of each row's pin respectively, when judging that arbitrary storage battery is in under-voltage condition, controlling an acousto-optic warning unit and starting.
Further, described control circuit also has over-voltage protecting function, and namely described control circuit is also suitable for when judging that arbitrary storage battery is in overvoltage, controls a switching tube charge closing interface.
Further, realize charging by metal-oxide-semiconductor to control; Described switching tube is metal-oxide-semiconductor, and the grid of this metal-oxide-semiconductor is connected with the output of described control circuit, and drain electrode, source electrode are connected with the negative terminal of electric discharge, charging inlet respectively.
The technical problem that the voltage of each batteries is detected respectively is solved further by each voltage control electronic circuit; Described control circuit comprises the voltage control electronic circuit that several detect each accumulator battery voltage respectively; Described voltage control electronic circuit comprises: charging management chip, and the test side of this charging management chip is connected with respective row pin, and its control of discharge end is connected with the base stage of PNP triode T1 by resistance R1; And the collector electrode of described PNP triode T1 is successively by resistance R3, described acousto-optic warning unit ground connection, its emitter is connected with test side institute platoon pin respectively.
Further, in order to solve the technical problem of control circuit at under-voltage alarm, described acousto-optic warning unit comprises: the buzzer that the two ends of light-emitting diode VD and/or this light-emitting diode VD1 are also in parallel.
Further, the related circuit crossing pressure-controlled is, the charging control end of charging management chip is connected with the base stage of PNP triode T2 by resistance R2; And the emitter of described PNP triode T2 is connected with the emitter of PNP triode T1, its collector electrode is connected as the output of described voltage control electronic circuit with resistance R4.
Further, in order to better carry out drived control to metal-oxide-semiconductor, the front end of described metal-oxide-semiconductor is also provided with drive circuit, this drive circuit comprises: NPN triode T3, the base stage of this NPN triode T3 is connected with the output of described voltage control electronic circuit by resistance R5, resistance R6 is connected with between the base stage of described NPN triode T3 and emitter, the collector electrode of described NPN triode T3 is connected with a power supply by resistance R7, resistance R8 is also connected with between the emitter of this collector electrode and NPN triode T3, the collector electrode of described NPN triode T3 is connected with the grid of metal-oxide-semiconductor, the emitter of described NPN triode T3 is also connected with the source electrode of metal-oxide-semiconductor, resistance R9 is connected with between the drain electrode of this metal-oxide-semiconductor and source electrode.
Further, in order to prevent electric current from pouring in down a chimney, the base stage of described NPN triode T3 also connects the negative electrode of diode VD, and the anode of this diode VD is connected with the output of described voltage control electronic circuit.
Another aspect, the utility model additionally provides a kind of wheelbarrow, comprising: accumulator array, and this accumulator array is controlled by described control circuit.
The third aspect, the utility model additionally provides a kind of balance car, comprising: accumulator array, and this accumulator array is controlled by described control circuit.
The beneficial effects of the utility model are, the utility model is cancelled discharge prevention and just can be guaranteed wheelbarrow, balance car operationally battery pack can not power-off, thus greatly reduce the problem that the personnel that cause due to battery pack power-off fall down; In addition, for taking into account the use safety of lithium battery group, when any single-unit battery tension is lower than under-voltage, utilizes emitting components (as LED lamp) or buzzer warning, carrying out reminding user and stop using.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further illustrated.
Fig. 1 shows the connection diagram of the control circuit of lithium battery group;
Fig. 2 shows the schematic diagram of voltage control electronic circuit in the control circuit of lithium battery group;
Fig. 3 shows the circuit theory diagrams of drive circuit.
In figure: resistance R1, R2, R3, R4, R5, R6, R7, R8, R9, PNP triode T1, T2, NPN triode T3, metal-oxide-semiconductor T4, light-emitting diode VD1, diode VD, buzzer BUZ1, charging inlet C+, C-, electric discharge interface P+, P-.
Embodiment
By reference to the accompanying drawings the utility model is described in further detail now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present utility model are described in a schematic way, and therefore it only shows the formation relevant with the utility model.
Embodiment 1
Fig. 1 shows the connection diagram of the control circuit of lithium battery group.
As shown in Figure 1, the control circuit of a kind of lithium battery group of the present utility model, comprising: the row's pin connecting accumulator array, and each row's pin is suitable for the positive pole of the batteries of each parallel connection to draw respectively; One control circuit is suitable for the voltage gathering the extraction of each row's pin respectively, when judging that arbitrary storage battery is in under-voltage condition, controlling an acousto-optic warning unit and starting.
Described control circuit is also suitable for when judging that arbitrary storage battery is in overvoltage, controls a switching tube charge closing interface.
Described switching tube is metal-oxide-semiconductor, and the grid of this metal-oxide-semiconductor is connected with the output of described control circuit, and drain electrode, source electrode are connected with the negative terminal of electric discharge, charging inlet respectively.
Fig. 2 shows the schematic diagram of voltage control electronic circuit in the control circuit of lithium battery group.
As shown in Figure 2, described control circuit comprises the voltage control electronic circuit that several detect each accumulator battery voltage respectively; Described voltage control electronic circuit comprises: charging management chip, and the test side of this charging management chip is connected with respective row pin, and its control of discharge end is connected with the base stage of PNP triode T1 by resistance R1; And the collector electrode of described PNP triode T1 is successively by resistance R3, described acousto-optic warning unit ground connection, its emitter is connected with test side institute platoon pin respectively.
Described acousto-optic warning unit comprises: the buzzer BUZ1 that the two ends of light-emitting diode VD and/or this light-emitting diode VD1 are also in parallel.
The charging control end of charging management chip is connected with the base stage of PNP triode T2 by resistance R2; And the emitter of described PNP triode T2 is connected with the emitter of PNP triode T1, its collector electrode is connected as the output of described voltage control electronic circuit with resistance R4.
Fig. 3 shows the circuit theory diagrams of drive circuit.
As shown in Figure 3, the front end of described metal-oxide-semiconductor is also provided with drive circuit, this drive circuit comprises: NPN triode T3, the base stage of this NPN triode T3 is connected with the output of described voltage control electronic circuit by resistance R5, resistance R6 is connected with between the base stage of described NPN triode T3 and emitter, the collector electrode of described NPN triode T3 is connected with a power supply by resistance R7, resistance R8 is also connected with between the emitter of this collector electrode and NPN triode T3, the collector electrode of described NPN triode T3 is connected with the grid of metal-oxide-semiconductor, the emitter of described NPN triode T3 is also connected with the source electrode of metal-oxide-semiconductor, resistance R9 is connected with between the drain electrode of this metal-oxide-semiconductor and source electrode.
The base stage of described NPN triode T3 also connects the negative electrode of diode VD, and the anode of this diode VD is connected with the output of described voltage control electronic circuit.
Operation principle of the present utility model is separated by the drive circuit of the front end of alarm control circuit and switching tube or metal-oxide-semiconductor, namely when under-voltage, this control circuit only can control acousto-optic warning unit and start, and the drive circuit of the front end of switching tube or metal-oxide-semiconductor then has and controls when overvoltage.Namely cancel discharge prevention just can guarantee wheelbarrow, balance car operationally battery pack can not power-off.
Described charging management chip, such as but not limited to employing MAX1736, TP4056, also can adopt single-chip microcomputer to realize.
Embodiment 2
A kind of wheelbarrow on above-described embodiment 1 basis, it comprises: accumulator array, and this accumulator array is controlled by described control circuit.
Embodiment 3
A kind of balance car on above-described embodiment 1 basis, it comprises: accumulator array, and this accumulator array is controlled by described control circuit.
With above-mentioned according to desirable embodiment of the present utility model for enlightenment, by above-mentioned description, relevant staff in the scope not departing from this utility model technological thought, can carry out various change and amendment completely.The technical scope of this utility model is not limited to the content on specification, must determine its technical scope according to right.
Claims (10)
1. a control circuit for lithium battery group, is characterized in that, comprising: the row's pin connecting accumulator array, and each row's pin is suitable for the positive pole of the batteries of each parallel connection to draw respectively;
One control circuit, it is suitable for the voltage gathering the extraction of each row's pin respectively, when judging that arbitrary storage battery is in under-voltage condition, controlling an acousto-optic warning unit and starting.
2. the control circuit of lithium battery group according to claim 1, is characterized in that, described control circuit is also suitable for when judging that arbitrary storage battery is in overvoltage, controls a switching tube charge closing interface.
3. the control circuit of lithium battery group according to claim 2, is characterized in that, described switching tube is metal-oxide-semiconductor, and the grid of this metal-oxide-semiconductor is connected with the output of described control circuit, and source electrode, drain electrode are connected with the negative terminal of charging, the interface that discharges respectively.
4. the control circuit of lithium battery group according to claim 3, is characterized in that, described control circuit comprises the voltage control electronic circuit that several detect each accumulator battery voltage respectively;
Described voltage control electronic circuit comprises: charging management chip, and the test side of this charging management chip is connected with respective row pin, and its control of discharge end is connected with the base stage of PNP triode T1 by resistance R1; And
The collector electrode of described PNP triode T1 is successively by resistance R3, described acousto-optic warning unit ground connection, and its emitter is connected with test side institute platoon pin respectively.
5. the control circuit of lithium battery group according to claim 4, is characterized in that, described acousto-optic warning unit comprises: the buzzer that the two ends of light-emitting diode VD and/or this light-emitting diode VD1 are also in parallel.
6. the control circuit of lithium battery group according to claim 5, is characterized in that, the charging control end of charging management chip is connected with the base stage of PNP triode T2 by resistance R2;
The emitter of described PNP triode T2 is connected with the emitter of PNP triode T1, and its collector electrode is connected as the output of described voltage control electronic circuit with resistance R4.
7. the control circuit of lithium battery group according to claim 6, it is characterized in that, the front end of described metal-oxide-semiconductor is also provided with drive circuit, this drive circuit comprises: NPN triode T3, the base stage of this NPN triode T3 is connected with the output of described voltage control electronic circuit by resistance R5, resistance R6 is connected with between the base stage of described NPN triode T3 and emitter, the collector electrode of described NPN triode T3 is connected with a power supply by resistance R7, resistance R8 is also connected with between the emitter of this collector electrode and NPN triode T3, the collector electrode of described NPN triode T3 is connected with the grid of metal-oxide-semiconductor, the emitter of described NPN triode T3 is also connected with the source electrode of metal-oxide-semiconductor, resistance R9 is connected with between the drain electrode of this metal-oxide-semiconductor and source electrode.
8. the control circuit of lithium battery group according to claim 7, is characterized in that, the base stage of described NPN triode T3 also connects the negative electrode of diode VD, and the anode of this diode VD is connected with the output of described voltage control electronic circuit.
9. a wheelbarrow, is characterized in that, comprising: accumulator array, and this accumulator array is controlled by the control circuit as described in as arbitrary in claim 1-8.
10. a balance car, is characterized in that, comprising: accumulator array, and this accumulator array is controlled by the control circuit as described in as arbitrary in claim 1-8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741280.7U CN204349483U (en) | 2014-11-29 | 2014-11-29 | A kind of control circuit of lithium battery group and wheelbarrow, balance car |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420741280.7U CN204349483U (en) | 2014-11-29 | 2014-11-29 | A kind of control circuit of lithium battery group and wheelbarrow, balance car |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204349483U true CN204349483U (en) | 2015-05-20 |
Family
ID=53232726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420741280.7U Expired - Fee Related CN204349483U (en) | 2014-11-29 | 2014-11-29 | A kind of control circuit of lithium battery group and wheelbarrow, balance car |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204349483U (en) |
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2014
- 2014-11-29 CN CN201420741280.7U patent/CN204349483U/en not_active Expired - Fee Related
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| 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 |
Granted publication date: 20150520 Termination date: 20171129 |
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| CF01 | Termination of patent right due to non-payment of annual fee |