CN216033774U

CN216033774U - Electric motor car power battery relay and anti-theft system control circuit

Info

Publication number: CN216033774U
Application number: CN202122494814.3U
Authority: CN
Inventors: 方晓晓; 叶剑斌; 蒋瑜
Original assignee: Taizhou Xiya Technology Co ltd
Current assignee: Taizhou Xiya Technology Co ltd
Priority date: 2021-10-15
Filing date: 2021-10-15
Publication date: 2022-03-15
Anticipated expiration: 2031-10-15

Abstract

The utility model discloses a protection device of an electric vehicle, aiming at providing a power battery relay of the electric vehicle and a control circuit of an anti-theft system, and the key of the technical scheme is that the protection device comprises a keyless entrance guard, an ignition switch, a single chip microcomputer, a battery pack and a direct current transformer, wherein the keyless entrance guard, the ignition switch, the direct current transformer, the battery pack and the single chip microcomputer are electrically connected with each other to form the control circuit of the anti-theft system; the keyless entrance guard, the single chip microcomputer, the direct current transformer and the battery pack are electrically connected with each other to form a power battery relay, the keyless entrance guard starts an ignition switch by sending an unlocking signal, the keyless entrance guard closes the single chip microcomputer by sending a locking motor signal, the relay is arranged between the direct current transformers, the keyless entrance guard, the direct current transformer and the battery pack form an input loop, the keyless entrance guard, the single chip microcomputer, the battery pack and the direct current transformer form an output loop, and a display lamp is arranged between the keyless entrance guard and the ignition switch.

Description

Electric motor car power battery relay and anti-theft system control circuit

Technical Field

The utility model relates to the field of electric vehicle equipment, in particular to a power battery relay and an anti-theft system control circuit of an electric vehicle.

Background

The relay is an electric control switch device, when voltage and current are applied to a wound iron coil, an iron core generates electromagnetic attraction to attract an armature switch, when power supply to the wound iron coil is cancelled, the electromagnetic attraction disappears, and the armature switch is disconnected under the action of a spring. The operation of the circuit that the relay switch links into is realized with this, wherein, the power battery package of electric motor car just regards as the switch with the relay, the power battery package output current voltage of electric motor car is higher, this just requires the relay to have great actuation force, just also need continuously exert higher voltage and electric current around the iron coil to the relay, and general electric motor car provides voltage and electric current for the relay through lead-acid batteries, lead-acid batteries's characteristic is that long-time output heavy current can reduce output voltage, this voltage and the electric current that just leads to applying around the iron coil are not enough, cause the unable actuation of relay, influence the output work of power battery package.

The electric vehicle is used as a vehicle driven by electric energy, and gradually becomes a main mode of short-distance traffic due to the characteristics of light weight and convenience in driving, at present, some electric vehicles can be provided with an anti-theft system, the anti-theft system needs to be powered by a battery, and when the connection between the battery and the electric vehicle is damaged or the battery is not powered, the anti-theft system loses effect, so that the effect of the anti-theft system is limited to a certain extent.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects in the prior art, the utility model aims to provide a power battery relay of an electric vehicle and a control circuit of an anti-theft system.

In order to achieve the purpose, the utility model provides the following technical scheme: a kind of electric motor car power battery relay and anti-theft system control circuit, including PKE (keyless entrance guard), IGN (ignition switch), MCU (one-chip computer), BAT (assembled battery), first DC/DC converter and second DC/DC converter, PKE, IGN, first DC/DC converter, BAT and MCU are connected electrically each other and formed the control circuit of anti-theft system; and the PKE, the MCU, the first DC/DC converter, the BAT and the second DC/DC converter are mutually and electrically connected to form a power battery relay.

The utility model is further configured to: the PKE turns on the IGN by sending an unlock signal.

The utility model is further configured to: the PKE shuts down the MCU by sending a lock motor signal.

The utility model is further configured to: an R12VDC relay is arranged between the first DC/DC converter and the second DC/DC converter, the PKE, the first DC/DC converter and the BAT form an input loop, and the PKE, the MCU, the BAT and the second DC/DC converter form an output loop.

The utility model is further configured to: the first DC/DC converter is used for buck conversion, and the first DC/DC converter is used for converting 72V voltage to 12V.

The utility model is further configured to: and an LED display lamp is arranged between the PKE and the IGN.

The utility model is further configured to: the PKE is set as a PKE keyless sensing end.

By adopting the technical scheme, when the electric vehicle needs to be started and stopped, firstly, the unlocking signal needs to be sent to the IGN through the PKE, the IGN is communicated to form a closed path after receiving the unlocking signal, meanwhile, the voltage is transmitted to the first DC/DC converter, the voltage is reduced to 12V through the first DC/DC converter and then is used as the control circuit of the relay to control the relay to be turned off, the loop formed by connecting the BAT, the MCU and the PKE is used as the output circuit of the relay, and when the relay works, the second DC/DC converter connected to the output loop works to provide power for the electric vehicle.

When the electric vehicle is parked, a motor locking signal is sent to the MCU through the PKE, the MCU starts the anti-theft system control circuit after receiving the signal, a loop path is formed through the PKE, the MCU and the BAT, and when the geographical information position change or the state information change of the electric vehicle is detected, an alarm is sent to a PKE base station.

This electric motor car power battery relay and anti-theft system control circuit can guarantee that electric vehicle total control receives PKE control, can guarantee that electric motor car power battery is more stable with being connected of electric motor car, through PKE to MCU's control, can guarantee that electric vehicle theftproof signal frequency and phase stability when not stolen, can in time accurately detect vehicle state information when the vehicle is stolen.

Drawings

Fig. 1 is a circuit diagram of a control circuit of a power battery relay and an anti-theft system of an electric vehicle.

Detailed Description

An embodiment of a power battery relay and an anti-theft system control circuit of an electric vehicle according to the present invention will be 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.

A kind of electric motor car power battery relay and anti-theft system control circuit, including PKE (keyless entrance guard), IGN (ignition switch), MCU (one-chip computer), BAT (assembled battery), first DC/DC converter and second DC/DC converter, PKE, IGN, first DC/DC converter, BAT and MCU are connected electrically each other and formed the control circuit of anti-theft system; the power battery relay is formed by electrically connecting the PKE, the MCU, the first DC/DC converter, the BAT and the second DC/DC converter, the PKE is connected with the IGN to form three communication paths, the first communication path is provided with an LED state display lamp, the 72V LED state display lamp can display the PKE real-time state, the locking state and the unlocking state, and real-time equipment state information is provided for personnel; the second channel is set as a Public Key Exchange (PKE) and integrated neutral conductor (IGN) common connection point to be grounded, so that the driving safety of the electric vehicle is ensured; the third channel is an unlocking signal channel of the PKE for the IGN, the channel is used for the PKE to send an unlocking signal to the IGN, a current transformer and a signal amplifier are arranged on the channel, the current transformer is positioned at the downstream of the PKE, the unlocking signal sent by the PKE is transmitted to the IGN after being integrated with the unlocking signal through the current transformer and the signal amplifier, the PKE is electrically connected with a first DC/DC converter, the PKE is arranged as a control end of the first DC/DC converter and used for transmitting 72V voltage to the first DC/DC converter through the IGN in an unlocking state, meanwhile, a public connection point of the first DC/DC converter and the BAT is grounded, the first DC/DC converter is arranged as a control circuit of a relay, a second DC/DC converter is arranged as an output circuit of the relay, the MCU is arranged as a master controller, and the BAT simultaneously supplies power for the relay circuit and the anti-theft system control circuit, the PKE and the MCU are connected and set into two channels, the first channel is set to be a channel for the PKE to send a motor locking signal to the MCU, the second channel is set to be a channel for the BAT to transmit the signal to the IGN as the MCU control end after the BAT supplies power to the IGN, the PKE starts the IGN by sending an unlocking signal, the PKE closes the MCU by sending a motor locking signal, an R12VDC relay is arranged between the first DC/DC converter and the second DC/DC converter, the PKE, the first DC/DC converter and the BAT form an input loop, the PKE, the MCU, the BAT and the second DC/DC converter form an output loop, the first DC/DC converter is used for voltage reduction conversion, the first DC/DC converter is used for converting 72V voltage into 12V, an LED display lamp is arranged between the PKE and the IGN, and the PKE is set to be a keyless induction end.

An anti-theft system control circuit comprises a main control chip circuit and a base station chip circuit, wherein the main control chip circuit is connected with the base station chip circuit through an infinite signal base station to realize an electronic anti-theft function, a main control chip MCU, a power management module and a local area internet transceiver circuit are arranged in the main control chip, the main control chip MCU is used for processing collected signals, the signals comprise electric vehicle real-time state information, battery information, geographical position information, PKE real-time information and equipment working information, the main control chip MCU simultaneously controls a serial peripheral interface or an input-output interface to be communicated with the base station chip circuit, controls the local area internet transceiver to be communicated with a power controller to control the start and stop of an electric vehicle, the power management module is used for converting power voltage into preset working voltage and collecting real-time power voltage information, and the local area internet transceiver circuit, and the power controller is used for receiving the authentication request information of the power controller and sending the authentication result to the power controller.

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

1. The utility model provides an electric motor car power battery relay and anti-theft system control circuit which characterized in that: the system comprises a PKE keyless entry, an IGN ignition switch, an MCU singlechip, a BAT battery pack, a first DC/DC converter and a second DC/DC converter, wherein the PKE keyless entry, the IGN ignition switch, the first DC/DC converter, the BAT battery pack and the MCU singlechip are mutually and electrically connected to form an anti-theft system control circuit; the PKE keyless access control system comprises a PKE keyless access control system, an MCU singlechip, a first DC/DC converter, a BAT battery pack and a second DC/DC converter which are electrically connected with each other to form a power battery relay.

2. The electric vehicle power battery relay and anti-theft system control circuit as claimed in claim 1, characterized in that: and the PKE keyless entrance guard starts an IGN ignition switch by sending an unlocking signal.

3. The electric vehicle power battery relay and anti-theft system control circuit as claimed in claim 1, characterized in that: and the PKE keyless entrance guard closes the MCU through sending a motor locking signal.

4. The electric vehicle power battery relay and anti-theft system control circuit as claimed in claim 1, characterized in that: an R12VDC relay is arranged between the first DC/DC converter and the second DC/DC converter, the PKE keyless entrance guard, the first DC/DC converter and the BAT battery pack form an input loop, and the PKE keyless entrance guard, the MCU single chip microcomputer, the BAT battery pack and the second DC/DC converter form an output loop.

5. The electric vehicle power battery relay and anti-theft system control circuit according to claim 4, characterized in that: the first DC/DC converter is used for step-down conversion, and the first DC/DC converter is used for converting 72V voltage into 12V voltage.

6. The electric vehicle power battery relay and anti-theft system control circuit as claimed in claim 1, characterized in that: and an LED display lamp is arranged between the PKE keyless entrance guard and the IGN ignition switch.

7. The electric vehicle power battery relay and anti-theft system control circuit of claim 6, characterized in that: the PKE keyless entrance guard is set as a PKE keyless entrance guard keyless induction end.