CN216751185U - Electric vehicle safety protection circuit - Google Patents
Electric vehicle safety protection circuit Download PDFInfo
- Publication number
- CN216751185U CN216751185U CN202122494850.XU CN202122494850U CN216751185U CN 216751185 U CN216751185 U CN 216751185U CN 202122494850 U CN202122494850 U CN 202122494850U CN 216751185 U CN216751185 U CN 216751185U
- Authority
- CN
- China
- Prior art keywords
- relay
- circuit
- protection circuit
- electric vehicle
- diode
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Abstract
The utility model discloses a safety protection circuit for an electric vehicle, which aims to provide a safety protection circuit capable of controlling the charging and braking of the vehicle, and the technical scheme is characterized by comprising a charging protection circuit and a brake driving circuit, wherein the charging protection circuit and the brake driving circuit are electrically connected with each other through a diode, the charging protection circuit is connected with the brake driving circuit through a diode, the charging protection circuit comprises a charger, a relay, a single-pole double-throw switch and an output circuit, the output circuit is connected with the charger through the relay, the relay is used for controlling the opening and closing of the single-pole double-throw switch, the brake driving circuit comprises a signal input end, a relay, a single-pole double-throw switch and an output circuit, the output circuit is connected with the signal input end through the relay, the relay is used for controlling the opening and closing of the single-pole double-throw switch, the charger is arranged as a 72V battery pack, one end of the circuit output circuit is connected with an electric vehicle instrument, one end of the brake cable is connected with a low brake cable of the electric vehicle.
Description
Technical Field
The utility model relates to the technical field of electric vehicles, in particular to a safety protection circuit of an electric vehicle.
Background
With the development of technology, people use various shared devices in daily life, such as shared automobiles, shared charge pal, shared bicycles, shared electric vehicles, and the like.
The existing processing mode is that a control system of the shared electric vehicle is generally restarted through an electronic control intelligent terminal, so that the shared electric vehicle is ridden again, but the control system is restarted to recover the normal riding state for a long time, so that a pause feeling is generated when the shared electric vehicle is used, and poor user experience is caused to users, and therefore a circuit integrating charging safety protection and braking safety protection is urgently needed.
SUMMERY OF THE UTILITY MODEL
Aiming at the defects in the prior art, the utility model aims to provide a safety protection circuit for an electric vehicle.
In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides an electric vehicle safety protection circuit, includes charge protection circuit and brake drive circuit, and charge protection circuit and brake drive circuit are through the mutual electric connection of first diode, and first diode anode is connected in charge protection circuit, and first diode cathode is connected in brake drive circuit.
The utility model is further configured to: the charging protection circuit comprises a charger, a first relay, a first single-pole double-throw switch and a first output circuit, wherein the first output circuit is connected with the charger through the first relay, and the first relay is used for controlling the first single-pole double-throw switch to be switched on and switched off.
The utility model is further configured to: the brake driving circuit comprises a signal input end, a second relay, a second single-pole double-throw switch and a second output circuit, the second output circuit is connected with the signal input end through the second relay, and the second relay is used for controlling the second single-pole double-throw switch to be switched on and switched off.
The utility model is further configured to: the charger is set as a 72V battery pack, one end of the first relay is connected with the charger, the other end of the first relay is grounded, the first output circuit is set as an output loop of the first relay, one end of the output loop is connected with an electric vehicle instrument, and the other end of the output loop is connected with a 12V secondary power supply with 10T.
The utility model is further configured to: the signal input end is connected with the second relay through the second diode, the other end of the relay is grounded, the second output circuit is used as an output loop of the second relay, one end of the output loop is connected with a normally-open grounded battery, and the other end of the output loop is connected with a low brake cable of the electric vehicle.
The utility model is further configured to: the anode of the first diode is connected with the first output circuit, and the cathode of the first diode is connected with the second relay.
The utility model is further configured to: the anode of the second diode is used for receiving a brake signal, and the cathode of the second diode is connected to the second relay.
By adopting the technical scheme, the first relay and the second relay control the first single-pole double-throw switch and the second single-pole double-throw switch to be switched on and off, so that the working state of the electric vehicle is controlled, and the charging safety and the driving safety of the electric vehicle can be ensured.
The first diode that sets up before charge protection circuit and the brake drive circuit can guarantee that only when the safety circuit that charges switches on, brake drive circuit's control circuit forms the route work, and signal input part inputs brake signal this moment, and electric vehicle carries out brake work, carries out upstream control to brake drive circuit through charge protection circuit, can guarantee the brake drive safety of traveling.
Drawings
Fig. 1 is a circuit diagram of an electric vehicle safety protection circuit according to the present invention.
Detailed Description
An embodiment of a safety protection circuit for an electric vehicle according to the present invention is further described with reference to fig. 1.
Spatially relative terms, such as "upper," "lower," "left," "right," and the like, may be used in the embodiments for ease of description to describe one element or feature's relationship to another element or feature as illustrated in the figures. It will be understood that the spatial terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "lower" can encompass both an upper and a lower orientation. The device may be otherwise oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Moreover, relational terms such as "first" and "second," and the like, may be used solely to distinguish one element from another element having the same name, without necessarily requiring or implying any actual such relationship or order between such elements.
The utility model provides an electric vehicle safety protection circuit, including charging protection circuit and brake drive circuit, charging protection circuit and brake drive circuit are through the mutual electric connection of first diode, first diode anode is connected in charging protection circuit, first diode cathode is connected in brake drive circuit, when charging protection circuit charges, the closed circular telegram of charging protection circuit begins work, shunt to brake drive circuit and control its work through first diode simultaneously, connect charging protection circuit and brake drive circuit in series through first diode, thereby accessible charging protection circuit control brake drive circuit switching protection driving safety.
The charging protection circuit comprises a charger, a first relay, a first single-pole double-throw switch and a first output circuit, wherein the first output circuit is connected with the charger through the first relay, the first relay is used for controlling the first single-pole double-throw switch to be switched on and switched off, the charger is arranged as a 72V battery pack, one end of the first relay is mutually connected with the charger, the other end is grounded, the charger battery pack is arranged as a control circuit of the first relay, the first output circuit is arranged as an output loop of the first relay, a first single-pole double-throw switch is arranged on the output loop, one end of the first single-pole double-throw switch is connected with an electric vehicle instrument, the other end of the first relay is connected with a 12V secondary power supply with 10T, when the charger is closed, the first relay stops working, the first single-pole double-throw switch is switched off, the output loop is switched off, the instrument display displays a power-off state, and no current passes through the first diode in the output loop at the moment; when the charger is started to start charging, as charging current flows through the first relay, the first relay controls the first single-pole double-throw switch to jump to a closed state, the output loop is connected, the instrument display displays a power-on charging state, at the moment, forward current flows into the brake driving circuit through the first diode, the working state of the electric vehicle charger can be displayed on the instrument display clearly through the first relay and the first single-pole double-throw switch which are arranged in the charging protection circuit, the output loop power supply is set to be a 12V battery pack, and the output loop of the charging protection circuit is set to be a control circuit of the brake driving circuit and used for controlling the brake driving circuit to be switched on and off.
The brake driving circuit comprises a signal input end, a second relay, a second single-pole double-throw switch and a second output circuit, the second output circuit is connected with the signal input end through the second relay, the second relay is used for controlling the second single-pole double-throw switch to be switched on and switched off, the signal input end is mutually connected with the second relay through a second diode, the other end of the relay is grounded, the second output circuit is used as an output loop of the second relay, one end of the output loop is connected with a normally open grounded battery, the other end of the output loop is connected with a low brake line of the electric vehicle, the anode of the second diode is used for receiving a brake signal, the cathode of the second diode is connected with the second relay, the signal input end is arranged on the output loop of the charging protection circuit, the signal input end is used for outputting a PWM brake signal to the brake driving circuit, when the safety protection circuit is charged, a forward current passes through the first diode, the second single-pole double-throw switch is controlled to be closed to form a channel, at the moment, if a PWM brake signal is input at the signal input end, the electric vehicle enters a brake state, and the second diode is connected to the signal input end in series and can step down the PWM signal, so that the voltage stabilization of a circuit in the equipment is ensured.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and those skilled in the art should be able to make general changes and substitutions within the technical scope of the present invention.
Claims (7)
1. An electric vehicle safety protection circuit characterized in that: including charging protection circuit and brake drive circuit, charging protection circuit and brake drive circuit are through the mutual electric connection of first diode, first diode anode is connected in charging protection circuit, first diode cathode is connected in brake drive circuit.
2. The electric vehicle safety protection circuit of claim 1, wherein: the charging protection circuit comprises a charger, a first relay, a first single-pole double-throw switch and a first output circuit, wherein the first output circuit is connected with the charger through the first relay, and the first relay is used for controlling the first single-pole double-throw switch to be switched on and switched off.
3. The electric vehicle safety protection circuit according to claim 1, wherein: the brake driving circuit comprises a signal input end, a second relay, a second single-pole double-throw switch and a second output circuit, the second output circuit is connected with the signal input end through the second relay, and the second relay is used for controlling the second single-pole double-throw switch to be switched on and switched off.
4. An electric vehicle safety protection circuit as claimed in claim 2, wherein: the charger is set as a 72V battery pack, one end of the first relay is connected with the charger, the other end of the first relay is grounded, the first output circuit is set as an output loop of the first relay, one end of the output loop is connected with an electric vehicle instrument, and the other end of the output loop is connected with a 12V secondary power supply with 10T.
5. The electric vehicle safety protection circuit of claim 3, wherein: the signal input end passes through second diode and second relay interconnect, the relay other end ground connection, the output circuit of second relay is regarded as to the second output circuit, normally open ground connection battery is connected to output circuit one end, and electric vehicle's low brake cable is connected to one end in addition.
6. An electric vehicle safety protection circuit according to claim 4 or 5, wherein: the anode of the first diode is connected to the first output circuit, and the cathode of the first diode is connected to the second relay.
7. An electric vehicle safety protection circuit as claimed in claim 5, wherein: and the anode of the second diode is used for receiving a brake signal, and the cathode of the second diode is connected to the second relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122494850.XU CN216751185U (en) | 2021-10-15 | 2021-10-15 | Electric vehicle safety protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122494850.XU CN216751185U (en) | 2021-10-15 | 2021-10-15 | Electric vehicle safety protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216751185U true CN216751185U (en) | 2022-06-14 |
Family
ID=81922653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122494850.XU Active CN216751185U (en) | 2021-10-15 | 2021-10-15 | Electric vehicle safety protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216751185U (en) |
-
2021
- 2021-10-15 CN CN202122494850.XU patent/CN216751185U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101673822B1 (en) | Apparatus and method for detecting relay welding in green car | |
| CN112009303A (en) | Control system and method for electric vehicle discharge control | |
| US20070139016A1 (en) | Battery charging system and methods | |
| EP1428304A2 (en) | Energy management system for vehicle | |
| CN101888114A (en) | Multifunctional power supply of vehicular automotive electronic device | |
| CN104118374A (en) | Automobile emergency start device | |
| CN105102272A (en) | Vehicular power supply device | |
| CN216751185U (en) | Electric vehicle safety protection circuit | |
| CN110450675B (en) | Power battery system, control method and electric automobile | |
| CN113561810B (en) | Charging port power-off protection device and electric vehicle | |
| CN110234531B (en) | Control system, mobile body, and control method | |
| CN111137231A (en) | Power supply system and vehicle | |
| CN216904278U (en) | BMS power automatic protection circuit | |
| CN114919437A (en) | Lithium electric forklift charging system and method | |
| CN210652696U (en) | New energy automobile and low-voltage power supply circuit thereof | |
| CN211567861U (en) | Automatic power supply device for storage battery of electric vehicle | |
| CN210161933U (en) | Direct current-to-direct current integrated charger | |
| CN102745128B (en) | Control method and system of vehicle emergency signal light | |
| CN116325412A (en) | Over-discharge protection method and system, vehicle, battery management system and storage medium | |
| CN106817052B (en) | Integrated module of starter current limiter and circuit breaker and automobile starting system thereof | |
| CN202602333U (en) | Lithium battery management circuit for automobile products | |
| CN105958142A (en) | Electromechanical-hybrid-based servo storage battery automation protection device and method | |
| CN112937304A (en) | Electric motor car low-voltage storage battery insufficient voltage's starting system | |
| JPH09154236A (en) | Power supply unit for electric car | |
| CN201928077U (en) | Multifunctional power supply for vehicle-mounted automotive electronic device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |