CN210007374U - power supply protection system for motor drive control of scooter for old people - Google Patents
power supply protection system for motor drive control of scooter for old people Download PDFInfo
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- CN210007374U CN210007374U CN201920915063.8U CN201920915063U CN210007374U CN 210007374 U CN210007374 U CN 210007374U CN 201920915063 U CN201920915063 U CN 201920915063U CN 210007374 U CN210007374 U CN 210007374U
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Abstract
The utility model discloses a a power supply protection system for old person's car motor drive control of riding instead of walk, including battery sampling circuit unit and the power supply control circuit unit that is connected, battery sampling circuit unit is used for the break-make through motor controller control power supply control circuit unit, battery sampling circuit unit, including resistance R1, resistance R1's external battery voltage output end of end, resistance R1's another end is connected with diode D1's positive pole through resistance R2, diode D1's negative pole loops through resistance R3, resistance R4 is connected with motor controller's voltage sampling terminal, the utility model discloses can appear under the condition of short circuit in the load, even if the battery is external power supply, power supply control circuit unit also can not the circular telegram to cause the damage to other components and parts of circuit, effectual power supply control circuit unit that closes, do not drive motor work, and moreover, whole circuit is analog circuit, realizes easily, has good application prospect.
Description
Technical Field
The utility model relates to an electronic circuit technical field, concretely relates to a power supply protection system that is used for old car motor drive control of riding instead of walk.
Background
A motor controller of an old mobility scooter is a core element for controlling the operation of the old mobility scooter. The motor controller can be driven and controlled only after the power supply is electrified. At present, when a battery supplies power through a switch, a motor can be powered on immediately, drive control does not have protective measures (overcurrent protection), when the motor or other loads are short-circuited, the circuit can be burnt out, when the motor breaks down, the motor is particularly brushed to have the risk of galloping, even accidents occur, and potential safety hazards exist.
SUMMERY OF THE UTILITY MODEL
The utility model aims at overcoming current when the battery supplies power through the switch, the motor can be electrified immediately, and drive control does not have safeguard measure (overcurrent protection), has the problem of potential safety hazard. The utility model discloses a power supply protection system for old car motor drive control of riding instead of walk can appear under the condition of short circuit at the load, even if the battery is external to be supplied power, power supply control circuit unit also can not circular telegram to cause the damage to other components and parts of circuit, the effectual power supply control circuit unit that closes, not driving motor work, moreover, whole circuit is analog circuit, and the circuit is simple, realizes easily that good application prospect has.
In order to achieve the above purpose, the utility model adopts the technical scheme that:
A power supply protection system for motor drive control of scooter for the elderly comprises a battery sampling circuit unit and a power supply control circuit unit which are connected,
the battery sampling circuit unit is used for controlling the on-off of the power supply control circuit unit through the motor controller,
the battery sampling circuit unit comprises a resistor R1, the end of the resistor R1 is externally connected with a battery voltage output end, the other end of the resistor R1 is connected with the anode of a diode D1 through a resistor R2, the cathode of the diode D1 is connected with a voltage sampling terminal of the motor controller through the resistor R3 and a resistor R4 in sequence,
the POWER supply control circuit unit comprises a triode Q1 and a MOS tube Q2, wherein the base electrode of a triode Q1 is connected with the POWER supply control signal output terminal of the motor controller through a resistor R9, the emitter electrode of a triode Q1 is connected with the ground, the base electrode of a triode Q1 is connected with the ground through a resistor R5, the collector electrode of the triode Q1 is connected with the gate electrode of a MOS tube Q2 through a resistor R6, the drain electrode of the MOS tube Q2 is connected with the negative electrode of a diode D1, the source electrode of the MOS tube Q2 is connected with a POWER _3.6 terminal, the POWER _3.6 terminal is further connected with the gate electrode of the MOS tube Q2 through a resistor R7, and two ends of the resistor R7 are connected with a capacitor C1 in parallel.
In the power supply protection system for motor drive control of the scooter for the elderly, the voltage sampling terminal of the motor controller is further connected with the ground through the resistor R8 and the capacitor C2 respectively.
In the POWER supply protection system for motor drive control of the scooter for the elderly, the POWER _3.6 terminal is further connected with the positive electrode of the polar capacitor C3, and the negative electrode of the polar capacitor C3 is connected with the ground.
In the power supply protection system for the motor drive control of the scooter for the elderly, the triode Q1 is an NPN type triode, and the MOS transistor Q2 is a P-channel MOS transistor.
In the power supply protection system for motor drive control of the scooter for the elderly, the diode D1 is a light emitting diode.
In the power supply protection system for the motor drive control of the scooter for the elderly, the drain of the MOS transistor Q2 is connected to the fuse F1.
In the power supply protection system for motor drive control of the scooter for the elderly, the switch S1 is arranged between the battery voltage output end and the resistor R1.
The utility model has the advantages that: the utility model discloses a power supply protection system for old car motor drive control of riding instead of walk can appear under the condition of short circuit at the load, even if the battery is external to be supplied power, power supply control circuit unit also can not circular telegram to cause the damage to other components and parts of circuit, the effectual power supply control circuit unit that closes, not driving motor work, moreover, whole circuit is analog circuit, and the circuit is simple, realizes easily that good application prospect has.
Drawings
Fig. 1 is a circuit diagram of the power supply protection system for the motor drive control of the scooter for the elderly.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings, in which the invention is illustrated at .
As shown in figure 1, the power supply protection system for the motor drive control of the scooter for the elderly of the utility model comprises a battery sampling circuit unit and a power supply control circuit unit which are connected,
the battery sampling circuit unit is used for controlling the on-off of the power supply control circuit unit through the motor controller,
the battery sampling circuit unit comprises a resistor R1, the end of the resistor R1 is externally connected with a battery voltage output end, the other end of the resistor R1 is connected with the anode of a diode D1 through a resistor R2, the cathode of the diode D1 is connected with a voltage sampling terminal of the motor controller through the resistor R3 and a resistor R4 in sequence,
the POWER supply control circuit unit comprises a triode Q1 and a MOS tube Q2, wherein the base electrode of a triode Q1 is connected with the POWER supply control signal output terminal of the motor controller through a resistor R9, the emitter electrode of a triode Q1 is connected with the ground, the base electrode of a triode Q1 is connected with the ground through a resistor R5, the collector electrode of the triode Q1 is connected with the gate electrode of a MOS tube Q2 through a resistor R6, the drain electrode of the MOS tube Q2 is connected with the negative electrode of a diode D1, the source electrode of the MOS tube Q2 is connected with a POWER _3.6 terminal, the POWER _3.6 terminal is further connected with the gate electrode of the MOS tube Q2 through a resistor R7, and two ends of the resistor R7 are connected with a capacitor C1 in parallel.
Preferably, the voltage sampling terminal of the motor controller is connected with the ground through a resistor R8 and a capacitor C2, so that the stability of voltage sampling voltage signals can be guaranteed, and the motor controller can acquire accurate voltage.
Preferably, the POWER _3.6 terminal is further connected with the positive electrode of the polarity capacitor C3, and the negative electrode of the polarity capacitor C3 is connected with the ground, so that the POWER _3.6 terminal can be ensured to provide 3.6V stable and reliable voltage.
Preferably, the transistor Q1 is an NPN transistor, and the MOS transistor Q2 is a P-channel MOS transistor, so that power consumption is low, and on-off control is facilitated, thereby achieving the purpose of circuit control.
Preferably, the diode D1 is a light emitting diode, which can remind the user whether the battery is normally powered.
Preferably, the drain of the MOS transistor Q2 is connected to the fuse F1, which can protect the drain voltage input of the MOS transistor Q2 and serve as the output of the battery voltage output terminal 12V to the load.
Preferably, a switch S1 is arranged between the battery voltage output end and the resistor R1, the voltage output or the closing of the battery voltage output end is manually controlled, and the battery voltage output end is externally connected with 12V voltage.
The utility model discloses a power supply protection system for old car motor drive control of riding instead of walk, the theory of operation as follows: when the battery voltage output end 12V supplies power to the outside, the power supply control circuit unit is not immediately turned on, the external load is supplied with power through the resistors R1, R2 and the diode D1, the power supply voltage is detected through the resistors R3 and R4, if the external load is short-circuited, the voltage of the cathode of the diode D1 is very low due to the current limiting effect of the resistors R3 and R4, the load side is determined to be short-circuited at this time, the power supply control signal output terminal of the motor controller outputs a low level, so that the triode Q1 is turned off, the gate of the MOS transistor Q2 is at a low level, the MOS transistor Q2 is turned off and cannot be turned on, and the 12V cannot supply power to the outside; on the contrary, the power supply control signal output terminal of the motor controller outputs a high level, the triode Q1 is turned on, so that the gate of the MOS transistor Q2 is at the high level, and the MOS transistor Q2 is turned on, so that 12V is normally supplied to the outside.
To sum up, the utility model discloses a power supply protection system for old car motor drive control of riding instead of walk can appear under the condition of short circuit in the load, even if the battery is external to be supplied power, the power supply control circuit unit can not the circular telegram yet to cause the damage to other components and parts of circuit, the effectual power supply control circuit unit that closes, not driving motor work, moreover, whole circuit is analog circuit, and the circuit is simple, realizes easily that good application prospect has.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1, A power supply protection system for the motor drive control of the scooter for the elderly, which is characterized in that the power supply protection system comprises a battery sampling circuit unit and a power supply control circuit unit which are connected,
the battery sampling circuit unit is used for controlling the on-off of the power supply control circuit unit through the motor controller,
the battery sampling circuit unit comprises a resistor R1, the end of the resistor R1 is externally connected with a battery voltage output end, the other end of the resistor R1 is connected with the anode of a diode D1 through a resistor R2, the cathode of the diode D1 is connected with a voltage sampling terminal of the motor controller through the resistor R3 and a resistor R4 in sequence,
the POWER supply control circuit unit comprises a triode Q1 and a MOS tube Q2, wherein the base electrode of a triode Q1 is connected with the POWER supply control signal output terminal of the motor controller through a resistor R9, the emitter electrode of a triode Q1 is connected with the ground, the base electrode of a triode Q1 is connected with the ground through a resistor R5, the collector electrode of the triode Q1 is connected with the gate electrode of a MOS tube Q2 through a resistor R6, the drain electrode of the MOS tube Q2 is connected with the negative electrode of a diode D1, the source electrode of the MOS tube Q2 is connected with a POWER _3.6 terminal, the POWER _3.6 terminal is further connected with the gate electrode of the MOS tube Q2 through a resistor R7, and two ends of the resistor R7 are connected with a capacitor C1 in parallel.
2. The power supply protection system for the motor drive control of mobility scooter for the elderly, as claimed in claim 1, wherein the voltage sampling terminal of the motor controller is further connected to ground via a resistor R8 and a capacitor C2, respectively.
3. The POWER supply protection system for the motor drive control of mobility scooter for elderly people according to claim 1, wherein the POWER _3.6 terminal is further connected to the positive electrode of a polar capacitor C3, and the negative electrode of the polar capacitor C3 is connected to ground.
4. The power supply protection system for the drive control of the motor of the scooter for the elderly, as claimed in claim 1, wherein the transistor Q1 is an NPN transistor, and the MOS transistor Q2 is a P-channel MOS transistor.
5. The kind of power supply protection system for the motor drive control of mobility scooter for the elderly as claimed in claim 1, wherein the diode D1 is a light emitting diode.
6. The power supply protection system for the motor drive control of mobility scooter for elderly people according to claim 1, wherein the drain of MOS transistor Q2 is connected to fuse F1.
7. The power supply protection system for the motor drive control of mobility scooter for the elderly as claimed in claim 1, wherein a switch S1 is provided between the battery voltage output terminal and the resistor R1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915063.8U CN210007374U (en) | 2019-06-18 | 2019-06-18 | power supply protection system for motor drive control of scooter for old people |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920915063.8U CN210007374U (en) | 2019-06-18 | 2019-06-18 | power supply protection system for motor drive control of scooter for old people |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210007374U true CN210007374U (en) | 2020-01-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920915063.8U Active CN210007374U (en) | 2019-06-18 | 2019-06-18 | power supply protection system for motor drive control of scooter for old people |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210007374U (en) |
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2019
- 2019-06-18 CN CN201920915063.8U patent/CN210007374U/en active Active
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| TR01 | Transfer of patent right |
Effective date of registration: 20210324 Address after: 213000 No.9, Xinyong Road, Wujin national high tech Industrial Development Zone, Changzhou City, Jiangsu Province Patentee after: CHANGZHOU TAOCHEN ELECTRONIC TECHNOLOGY Co.,Ltd. Address before: 213000 Business Center B-601, Changzhou Science and Education City, No. 18 Changwu Middle Road, Wujin District, Changzhou City, Jiangsu Province Patentee before: CHANGZHOU TAOTAO INTELLIGENT TECHNOLOGY Co.,Ltd. |