CN213734866U - Vehicle storage battery power-off control circuit - Google Patents
Vehicle storage battery power-off control circuit Download PDFInfo
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- CN213734866U CN213734866U CN202022607255.8U CN202022607255U CN213734866U CN 213734866 U CN213734866 U CN 213734866U CN 202022607255 U CN202022607255 U CN 202022607255U CN 213734866 U CN213734866 U CN 213734866U
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- switch
- relay
- control circuit
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- pressure switch
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Abstract
The utility model provides an electric control circuit under vehicle battery, include: the device comprises a first switch, a relay, a pressure switch and a load. One end of the first switch is connected with a first output end of the storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with one end of a coil of the relay and a second output end of the storage battery respectively. And the other end of the pressure switch is connected with the other end of the coil of the relay. The relation of connection that combines above-mentioned device can know, and only when the normally open switch of first switch and relay all closed, the battery just supplies power for the load, when pressure switch did not switch on, the normally open switch of relay was opened, and at this moment, for the state of opening circuit between battery and the load, the battery can not supply power for the load promptly, consequently can avoid the battery insufficient voltage.
Description
Technical Field
The utility model relates to a battery protection technical field, concretely relates to vehicle battery power off control circuit.
Background
In the use process of the new energy vehicle, due to the addition of the motor controller, the battery management system, the all-in-one controller, the heat management unit, the vehicle-mounted terminal and other electrical equipment, the power consumption of the storage battery can be greatly increased. The inventor finds that if the manual switch is not turned off in a state that the vehicle is not used, the controller can generate a certain static current, so that the energy of the storage battery is continuously consumed, and the storage battery is severely discharged, so that the next use of the vehicle is influenced.
Therefore, how to provide a power-off control circuit for a vehicle battery, which can avoid the shortage of the battery, is a great technical problem to be solved urgently by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In view of this, the embodiment of the utility model provides a vehicle battery is electric control circuit down can avoid the battery insufficient voltage.
In order to achieve the above object, the embodiment of the present invention provides the following technical solutions:
a vehicle battery power down control circuit comprising: the device comprises a first switch, a relay, a pressure switch and a load;
one end of the first switch is connected with a first output end of a storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with the load, one end of a coil of the relay and a second output end of the storage battery respectively;
and the other end of the pressure switch is connected with the other end of the coil of the relay.
Optionally, the load comprises at least one or more of a VCU, a TCU, a BMS.
Optionally, the first switch is a manual switch.
Optionally, the pressure switch is a mechanical pressure switch.
Optionally, when the vehicle key is inserted into the mechanical pressure switch, the mechanical pressure switch is turned on.
Optionally, the mechanical switch comprises a push rod pin, a compression spring, a switch contact moving piece and a switch contact static piece,
when the key is inserted, the key pushes the push rod pin, and the push rod pin drives the switch contact moving piece to move through the compression spring so that the switch contact moving piece is contacted with the switch contact static piece.
Optionally, the method further includes: an indicator light is provided on the display panel,
the indicator light is connected in series with the load.
Based on the technical scheme, the utility model provides a vehicle battery is electric control circuit down, include: the device comprises a first switch, a relay, a pressure switch and a load. One end of the first switch is connected with a first output end of the storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with one end of a coil of the relay and a second output end of the storage battery respectively. And the other end of the pressure switch is connected with the other end of the coil of the relay. The relation of connection that combines above-mentioned device can know, and only when the normally open switch of first switch and relay all closed, the battery just supplies power for the load, when pressure switch did not switch on, the normally open switch of relay was opened, and at this moment, for the state of opening circuit between battery and the load, the battery can not supply power for the load promptly, consequently can avoid the battery insufficient voltage.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic circuit diagram of a power down control circuit of a vehicle battery provided by the present invention;
fig. 2 is a schematic view of an operating principle of a mechanical pressure switch according to an embodiment of the present invention.
Detailed Description
Referring to fig. 1, fig. 1 is a schematic circuit diagram of a power down control circuit for a vehicle battery according to the present invention, the power down control circuit for a vehicle battery includes: a first switch 11, a relay 12, a pressure switch 13 and a load 14.
One end of the first switch is connected with a first output end of the storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with one end of a coil of the relay and a second output end of the storage battery respectively. And the other end of the pressure switch is connected with the other end of the coil of the relay.
In this embodiment, the load comprises at least one or more of a VCU, TCU, BMS. The first switch is a manual switch. The pressure switch is a mechanical pressure switch. When a vehicle key is inserted into the mechanical pressure switch, the mechanical pressure switch is conducted.
Specifically, mechanical type switch includes push rod pin, compression spring, switch contact moving plate and switch contact static piece, works as when 15 inserts of key, the key promotes the push rod pin, the push rod pin passes through compression spring drives the switch contact moving plate removes, so that the switch contact moving plate with switch contact static piece contact.
Except this, the utility model provides an electric control circuit under vehicle battery still includes: an indicator light in series with the load.
In this embodiment, a manual switch is disposed between the positive electrode of the battery and the fuse box for manually switching the circuit. The relay is a device which closes an output circuit by utilizing the attraction force generated between an electromagnet iron core and an armature by the current in a control circuit. When the mechanical pressure switch is subjected to external pressure, the free end of the elastic element generates displacement to push the switch element to be closed, so that circuits at two ends of the switch element are conducted. When the external force disappears, the circuit at the two ends of the switch element is disconnected by the aid of the return spring of the elastic element.
Schematically, as shown in fig. 2, the mechanical pressure switch works according to the following principle:
when the switch push rod pin 1 is extruded to move linearly upwards, the compression spring 2 is pushed, and meanwhile, the switch contact moving piece 3 is driven to move upwards, so that the two contacts and the wiring static piece 4 are closed, the switch is switched to a connection state, an external circuit is closed, and the indicator light is lightened; when the push rod pin 1 of the switch is released from the extrusion state, the switch contact moving piece 3 moves downwards under the reset action of the compression spring 2, the two contacts are separated from the wiring static piece 4, the switch is switched to the disconnection state, the external circuit is disconnected, and the indicator light is turned off.
Therefore, according to the embodiment, on the basis of the structure of the existing car key system, the mechanical pressure switch is additionally arranged, and the on-off action of the relay is realized by utilizing the effect of the car key on the pressure switch in the plugging and unplugging process, so that the whole storage battery power supply loop is switched on and off.
The specific working process is as follows:
1. and (3) electrifying: when the driver prepares to drive, the manual switch 11 is first closed, but since the output circuit of the relay 12 is still in the open state, the battery external circuit is still in the non-power-supply state. At this time, the vehicle key 15 needs to be inserted, the push rod pin of the mechanical pressure switch 13 is driven to move upwards through the insertion action of the vehicle key 15, so that the contact moving piece and the contact static piece of the mechanical pressure switch 13 are contacted, the output circuit of the relay 12 is closed, the external circuit of the storage battery is closed, and the load electric device of the whole vehicle can work normally.
2. The power-off process: when the driver intends to stop the vehicle, the driver first pulls out the vehicle key 15, the mechanical pressure switch 13 is not pressed, and is reset under the action of the internal compression spring, and the contact moving piece and the contact static piece are separated. The output circuit of the relay 2 is disconnected due to power failure, the external circuit of the storage battery is disconnected, and the load electric device of the whole vehicle stops working.
To sum up, the utility model provides a vehicle battery electric control circuit down, include: the device comprises a first switch, a relay, a pressure switch and a load. One end of the first switch is connected with a first output end of the storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with one end of a coil of the relay and a second output end of the storage battery respectively. And the other end of the pressure switch is connected with the other end of the coil of the relay. The relation of connection that combines above-mentioned device can know, and only when the normally open switch of first switch and relay all closed, the battery just supplies power for the load, when pressure switch did not switch on, the normally open switch of relay was opened, and at this moment, for the state of opening circuit between battery and the load, the battery can not supply power for the load promptly, consequently can avoid the battery insufficient voltage.
The embodiments in the present description are described in a progressive, parallel and combined manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (7)
1. A vehicle battery power down control circuit, comprising: the device comprises a first switch, a relay, a pressure switch and a load;
one end of the first switch is connected with a first output end of a storage battery and one end of the pressure switch respectively, the other end of the first switch is connected with one end of a normally open switch of the relay, and the other end of the normally open switch is connected with the load, one end of a coil of the relay and a second output end of the storage battery respectively;
and the other end of the pressure switch is connected with the other end of the coil of the relay.
2. The vehicle battery power down control circuit of claim 1, wherein the load comprises at least one or more of a VCU, TCU, BMS.
3. The vehicle battery power down control circuit of claim 1, wherein the first switch is a manual switch.
4. The vehicle battery power down control circuit of claim 1, wherein the pressure switch is a mechanical pressure switch.
5. The vehicle battery power down control circuit of claim 4, wherein the mechanical pressure switch conducts when a vehicle key is inserted into the mechanical pressure switch.
6. The vehicle battery power down control circuit of claim 5, wherein the mechanical switch includes a push rod pin, a compression spring, a switch contact moving plate, and a switch contact static plate,
when the key is inserted, the key pushes the push rod pin, and the push rod pin drives the switch contact moving piece to move through the compression spring so that the switch contact moving piece is contacted with the switch contact static piece.
7. The vehicle battery power down control circuit of claim 5, further comprising: an indicator light is provided on the display panel,
the indicator light is connected in series with the load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607255.8U CN213734866U (en) | 2020-11-11 | 2020-11-11 | Vehicle storage battery power-off control circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022607255.8U CN213734866U (en) | 2020-11-11 | 2020-11-11 | Vehicle storage battery power-off control circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213734866U true CN213734866U (en) | 2021-07-20 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022607255.8U Active CN213734866U (en) | 2020-11-11 | 2020-11-11 | Vehicle storage battery power-off control circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213734866U (en) |
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2020
- 2020-11-11 CN CN202022607255.8U patent/CN213734866U/en active Active
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