CN115431799A

CN115431799A - Charge and discharge control system

Info

Publication number: CN115431799A
Application number: CN202210969133.4A
Authority: CN
Inventors: 王超; 王本亮
Original assignee: Changchun Jetty Automotive Parts Co Ltd
Current assignee: Changchun Jetty Automotive Parts Co Ltd
Priority date: 2022-08-12
Filing date: 2022-08-12
Publication date: 2022-12-06
Also published as: WO2024032746A1

Abstract

The invention relates to the technical field of charging, in particular to a charging and discharging control system, which comprises a charging seat, a charging and discharging module and a charging and discharging module, wherein the charging seat at least comprises a charging and discharging guide module; the vehicle control end comprises an integrated charging module control module, the integrated charging module control module comprises a charging and discharging control module, and the charging and discharging control module is in bidirectional data and signal communication with the charging and discharging guide module; the charge and discharge guide module generates a guide signal matched with the charge gun or the discharge gun according to the charge and discharge control signal output by the charge and discharge control module, and feeds the guide signal back to the charge and discharge control module. The charging and discharging guide module is arranged according to the charging and discharging control system, so that the charging of the electric automobile can be realized, the discharging of the electric automobile to electric equipment can also be realized, the charging and discharging control function can be realized only by programming the integrated charging module control module, and the circuit design of the whole system is simplified.

Description

Charge and discharge control system

Technical Field

This writing relates to charge-discharge technical field, especially relates to a charge-discharge control system.

Background

With the rapid development of the automobile industry process and the enhancement of the social environmental awareness of people, the development of the new energy automobile industry becomes a key point for solving the shortage of petroleum resources and reducing atmospheric pollution. The supporting electric pile that fills is a necessary equipment also.

The charging pile can be installed in public buildings (public buildings, shopping malls, public parking lots and the like) and residential quarter parking lots or charging stations, and can charge various types of electric vehicles according to different voltage levels. The input end of the charging pile is directly connected with an alternating current power grid, and the output end of the charging pile is provided with a charging plug for charging the electric automobile. In case emergency such as the electric wire netting lacks electricity, electric wire netting outage appears, current stake of charging will be unable to use. As a mobile distributed energy storage device, an electric vehicle is considerable in the amount of stored electric energy, and therefore, it is a problem to be solved currently to effectively utilize the electric energy in the electric vehicle in an idle state.

In addition, when the new energy automobile is charged, the new energy automobile is required to input a guide voltage to the charging pile, and after the charging pile identifies the charging guide voltage, the charging pile inputs electric energy to the new energy automobile.

And new energy automobile's guide voltage generally provides the electric energy for on-vehicle battery power, and when on-vehicle battery power received on-vehicle other equipment to open and stop and appear undulant, on-vehicle battery power can't provide stable electric energy to guide voltage very easily, leads to guide voltage fluctuation, fills the unable discernment guide voltage's of electric pile condition.

Disclosure of Invention

To solve the problems in the prior art, embodiments herein provide a charge and discharge control system, which is used to solve the above technical problems.

There is provided a charge and discharge control system,

the charging seat at least comprises a charge-discharge guide module;

the vehicle control end comprises an integrated charging module control module, the integrated charging module control module comprises a charging and discharging control module, and the charging and discharging control module is in bidirectional data and signal communication with the charging and discharging guide module;

the charge and discharge guide module generates a guide signal matched with the charge gun or the discharge gun according to the charge and discharge control signal output by the charge and discharge control module, and feeds the guide signal back to the charge and discharge control module.

Preferably, the charging stand further comprises a protection circuit, an input end of the protection circuit is connected with an output end of a power supply module of the vehicle control end, and an output end of the protection circuit is connected with an input end of the charge and discharge control module and used for filtering interference signals and outputting stable voltage to the charge and discharge control module.

Preferably, the charging dock further includes a DC-DC conversion circuit, an input end of the DC-DC conversion circuit is connected to the protection circuit and an output end of the charge and discharge control module, and an output end of the DC-DC conversion circuit is connected to an input end of the charge and discharge guidance module.

Preferably, the DC-DC conversion circuit includes:

the voltage stabilizing module is used for receiving power supply power of the power supply module after passing through the protection circuit and is provided with a plurality of pins;

the filter circuit is connected with an input pin of the voltage stabilizing module and is used for filtering noise fluctuation of the power supply electric power to obtain direct-current voltage;

the pulse switch circuit is used for receiving a conducting signal of a driving pin of the voltage stabilizing module and generating pulse voltage;

and the coupling rectifying circuit is connected with the pulse switch circuit and is used for coupling the pulse voltage and the direct current voltage and rectifying the pulse voltage and the direct current voltage into a guide voltage.

Preferably, the pulse switching circuit comprises a first field effect transistor and a fifth resistor;

the drain electrode of the first field effect transistor is connected with the output end of the filter circuit, the grid electrode of the first field effect transistor is connected with the driving pin, the source electrode of the first field effect transistor is connected with one end of the fifth resistor, and the other end of the fifth resistor is grounded.

Preferably, the DC-DC conversion circuit further includes an eleventh capacitor, a sixth resistor, a twelfth capacitor, and a seventh resistor, where the eleventh capacitor and the sixth resistor form a low-pass filter and are connected between the gate of the first field-effect transistor and the driving pin, one end of the seventh resistor is connected between the source of the first field-effect transistor and the fifth resistor, the other end of the seventh resistor is connected to the twelfth capacitor, a connection position of the twelfth capacitor and the seventh resistor is connected to the current detection pin of the voltage stabilization module, and the other end of the twelfth capacitor is grounded.

Preferably, the coupling rectification circuit comprises a thirteenth capacitor, a fifth inductor and an eighth diode;

one end of the thirteenth capacitor is connected with the drain electrode of the first field effect transistor, the other end of the thirteenth capacitor is connected with one end of the fifth inductor, and the other end of the fifth inductor is grounded;

and the connection position of the thirteenth capacitor and the fifth inductor is connected with the anode of the eighth diode, and the cathode of the eighth diode is connected with the feedback pin of the voltage stabilizing module.

Preferably, an anti-radiation circuit is further arranged between the pulse switch circuit and the coupling rectification circuit;

the radiation-resistant circuit comprises an eighth resistor and a fourteenth capacitor;

one end of the eighth resistor is arranged between the drain electrode of the first field effect transistor and the thirteenth capacitor, the other end of the eighth resistor is connected with one end of the fourteenth capacitor, and the other end of the fourteenth capacitor is connected.

Preferably, the charge and discharge guidance module includes a vehicle-to-load discharge control guidance circuit and a charge guidance circuit.

Preferably, the output end of the vehicle-to-load discharge control guide circuit is connected with the discharge gun; the input end of the charging guide circuit is connected with the charging gun.

By utilizing the embodiment, the charging and discharging guide module is arranged, the guide signal matched with the charging gun or the discharging gun is generated according to the charging and discharging control signal output by the charging and discharging control module, the charging process of the electric automobile or the discharging process of the electric automobile to an external load is realized, the charging and discharging control module is integrated in the integrated charging module control module at the vehicle control end, the charging and discharging control function can be realized only by programming the integrated charging module control module, and the circuit design of the whole charging and discharging control system is simplified; in addition, except for the charging and discharging control process, the rest controls such as a charging and discharging state indicator lamp, a socket lock and a cover lock are all realized by a charging and discharging control module, and information fed back by each controlled component CAN be uploaded to a vehicle CAN bus in time, so that the control process CAN be efficiently and quickly completed; moreover, after the pulse voltage and a vehicle-mounted battery power supply (power supply module) are coupled and rectified through the DC-DC conversion circuit, stable guide voltage is obtained, and the requirement of a charging pile of the new energy automobile on the guide voltage can be met.

Drawings

In order to more clearly illustrate the embodiments or technical solutions in the prior art, the drawings used in the embodiments or technical solutions in the prior art are briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

Fig. 1 is a schematic block diagram of a charge and discharge control system according to an embodiment of the present disclosure.

Fig. 2 is a schematic block diagram of a charge and discharge control system according to a preferred embodiment of the present disclosure.

Fig. 3 is a vehicle-to-load discharge (V2L) control guidance circuit in the charge and discharge guidance module shown in fig. 2.

Fig. 4 is a circuit schematic of the protection circuit shown in fig. 2.

Fig. 5 is a circuit schematic diagram of the DC-DC conversion circuit shown in fig. 2.

Fig. 6 is a circuit schematic of the latch driver circuit.

[ description of reference ]

100. A charging seat; u8, a voltage stabilizing module;

103. a charge and discharge guide module; q5, a first field effect tube;

104. a protection circuit; r133 and a fifth resistor;

105. a DC-DC conversion circuit; r152 and a sixth resistor;

106. a cover sealing lock; r103 and a seventh resistor;

107. a cover lock state detection module; r132, eighth resistance;

108. a socket lock; c60 and an eleventh capacitor;

109. a socket lock state detection module; c47, twelfth capacitor;

110. a lighting circuit; c33, a thirteenth capacitor;

111. a status indication circuit; c45, a fourteenth capacitance;

112. a direct current power supply anode temperature detection device; l5 and a fifth inductor;

113. a DC power supply cathode temperature detection device; d8, an eighth diode;

200. a vehicle control end; u9 and a motor chip;

201. a power supply module; q14, a second field effect transistor;

202. the integrated charging module control module; q15, a triode;

203. a charge and discharge control module; r95, tenth resistance;

301. a charging gun; r96, eleventh resistance;

302. a discharging gun; r97 and a ninth resistor;

d3, a third diode; c35, a fifteenth capacitor;

d1, a first diode; c7, a seventh capacitor;

CW1, a first capacitor; c8, an eighth capacitor;

CW2, a second capacitor; c9, a ninth capacitor;

CW3, a third capacitance; c10, tenth capacitance;

CW4, a fourth capacitor; l2, common mode inductance;

c5, a fifth capacitor; l1, a first inductor;

c6 and a sixth capacitor.

Detailed Description

The technical solutions in the embodiments of the present invention will be described below clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the embodiments described are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments herein without making any creative effort, shall fall within the scope of protection.

As shown in fig. 1 and 2, a charge and discharge control system includes: the charging base 100 at least comprises a charging and discharging guide module 103, the vehicle control end 200 comprises an integrated charging module control module 202, the integrated charging module control module 202 comprises a charging and discharging control module 203, and the charging and discharging control module 203 is in bidirectional data and signal communication with the charging and discharging guide module 103; the charge and discharge guidance module 103 generates a guidance signal matched with the charge gun 301 or the discharge gun 302 according to the charge and discharge control signal output by the charge and discharge control module 203, and feeds back the guidance signal to the charge and discharge control module 203.

In some embodiments, the charge and discharge control module 203 may be integrated in the integrated charging module control module 202. The integrated charging module control module 202 may communicate data and signals with the control module of the vehicle via a CAN bus or ethernet.

Therefore, by arranging the charge and discharge guide module 103, a guide signal matched with the charge gun 301 or the discharge gun 302 is generated according to the charge and discharge control signal output by the charge and discharge control module 203, so that the charging process of the electric vehicle or the discharging process of the electric vehicle to an external load is realized, the charge and discharge control module 203 is integrated in the integrated charge module control module 202 of the vehicle control terminal 200, the charge and discharge control function can be realized only by programming the integrated charge module control module 202, and the circuit design of the whole charge and discharge control system is simplified.

Specifically, in some embodiments, the charge and discharge guidance module 103 includes a vehicle-to-load discharge control guidance circuit and a charge guidance circuit.

Fig. 3 shows a vehicle-to-load discharge (V2L) control pilot circuit. As shown in fig. 3, the V2L circuit may be composed of a discharging vehicle control device, a bidirectional vehicle-mounted charger, an insulation monitoring device, a resistor R1, a resistor R2, a resistor R3, a resistor R2', a resistor R3', a resistor R4', a resistor RC', a switch S1, a switch S2', a switch S3', a switch S4, an intelligent load control device, and the like, wherein the discharging vehicle control device may be integrated in the bidirectional vehicle-mounted charger or the integrated charging module control module 202 of fig. 2.

The discharging vehicle control device judges whether the vehicle plug is completely connected with the vehicle socket or not by measuring the resistance value between the detection point 3' and the PE, judges whether the discharging state is allowed or not by the voltage of the detection point 2' after the complete connection, and switches the switch S4 to the output state and enters the discharging mode after the voltage of the detection point 2' is smaller than 1V and the alternating current V2L set by an operator is obtained for discharging.

In some embodiments, the charge control steering circuit may employ GBT 18487.1-2015 "part 1 of electric vehicle conductive charging system: charge control pilot circuit in general requirements. The charging control guidance circuit can control the connection confirmation of the interface between the charging gun 301 and the charging seat 100, the self-checking of the off-board charger and the charging voltage matching problem, and charge the vehicle control end according to the preset charging requirement.

In some embodiments, the output of the vehicle-to-load discharge control pilot circuit is connected to the discharge gun 302; the input end of the charging guide circuit is connected with the charging gun 301. It is understood that after entering the discharging mode, the power of the vehicle control terminal 200 is provided to the discharging load via the discharging gun 302, and after entering the charging mode, the power of the off-board charger is provided to the charging dock 100 and then to the vehicle control terminal 200 via the charging gun 301.

In some embodiments, the charging dock 100 further includes a protection circuit 104, an input end of the protection circuit 104 is connected to an output end of the power supply module 201 of the vehicle control end 200, and an output end of the protection circuit 104 is connected to an input end of the charge and discharge control module 203, and is configured to filter an interference signal and output a stable voltage to the charge and discharge control module 203.

Specifically, as shown in fig. 4, there is provided a protection circuit 104 including: the device comprises a current backflow prevention module, a common mode filtering module and a differential mode filtering module.

Specifically, the current backflow prevention module receives the direct-current input voltage of the power supply module 201 and transmits the direct-current input voltage to the common mode filtering module and the differential mode filtering module, and the common mode filtering module is used for isolating common mode interference between a power supply loop of the power supply module 201 and a control loop of the charge and discharge control terminal 100; the differential mode filtering module is configured to isolate differential mode interference between a power supply loop of the power supply module 201 and a control circuit of the charging/discharging control terminal 100, and output a dc regulated voltage meeting a predetermined requirement.

Further, in some embodiments, the protection circuit 104 further includes an EMC filter module, the EMC filter module is connected between the common mode filter module and the differential mode filter module, and the EMC filter module is configured to absorb high-frequency noise of at least one of the power supply loop of the power supply module 201 and the control loop of the charging and discharging control terminal 100.

Specifically, as shown in fig. 4, the differential-mode filtering module includes a first inductor L1, the common-mode filtering module includes a common-mode inductor L2, a first end of the common-mode inductor L2 is connected to the output end of the current backflow preventing module, a second end of the common-mode inductor L2 is connected to the power ground, a third end of the common-mode inductor L2 is connected to the first inductor L1, a fourth end of the common-mode inductor L2 is connected to the power ground, and another end of the first inductor L1 is used for outputting a dc stabilizing voltage.

Specifically, as shown in fig. 4, the EMC filter module includes a first capacitor CW1, a second capacitor CW2, a third capacitor CW3, and a fourth capacitor CW4, one end of the first capacitor CW1 and the third capacitor CW3 connected in parallel is connected between the third end of the common-mode inductor L2 and the first inductor L1, and the other end is connected to a protection ground; one end of the second capacitor CW2 and the fourth capacitor CW4 connected in parallel is connected to the protection ground, and the other end is connected to the power ground.

Furthermore, a preceding stage filter circuit can be arranged between the current backflow prevention module and the common mode filter module, the preceding stage filter circuit comprises M preceding stage filter capacitors, one end of each preceding stage filter capacitor is connected with the first end of the common mode inductor, the other end of each preceding stage filter capacitor is connected with a power ground, and M is larger than or equal to 2. For example, 2 or 3 or 4 pre-stage filter capacitors may be connected in parallel between the common mode inductor and the power ground. In this embodiment, the pre-stage filter capacitor includes a fifth capacitor C5 and a sixth capacitor C6.

It is understood that the number of the pre-stage filter capacitors may be set according to actual requirements, and is not particularly limited herein.

Furthermore, a post-stage filter circuit is arranged behind the differential mode filter module and comprises N post-stage filter capacitors, one end of each post-stage filter capacitor is connected with a power ground, the other end of each post-stage filter capacitor is connected with the other end of the first inductor L1, and N is larger than or equal to 4. For example, 4 or 5 or more post-stage filter capacitors may be connected in parallel after the differential-mode filter module and before the output of the regulated voltage. In this embodiment, the post-stage filter capacitor includes a seventh capacitor C7, an eighth capacitor C8, a ninth capacitor C9, and a tenth capacitor C10.

It is to be understood that the number of the post-stage filter capacitors may be set according to actual requirements, and is not particularly limited herein.

In some embodiments, the charging dock 100 further includes a DC-DC conversion circuit 105, an input terminal of the DC-DC conversion circuit 105 is connected to the protection circuit 104 and an output terminal of the charge and discharge control module 203, and an output terminal of the DC-DC conversion circuit 105 is connected to an input terminal of the charge and discharge guidance module 103. The DC-DC conversion circuit 105 is used for converting the 9V-16V working voltage of the charge and discharge control module 203 into a 12V supply voltage.

Specifically, as shown in fig. 5, the DC-DC conversion circuit includes:

the voltage stabilizing module U8 is configured to receive power of the power supply module 201 after passing through the protection circuit 104, and has a plurality of pins;

the filter circuit is connected with an input pin of the voltage stabilizing module U8 and is used for filtering noise fluctuation of power supply electric power to obtain direct-current voltage;

the pulse switch circuit is used for receiving a conducting signal of a driving pin of the voltage stabilizing module U8 and generating pulse voltage;

and the coupling rectifying circuit is connected with the pulse switch circuit and is used for coupling the pulse voltage and the direct-current voltage and rectifying the pulse voltage and the direct-current voltage into a guide voltage.

The voltage stabilizing module U8 is an eight-pin chip, the voltage stabilizing module U8 can be an LM3488 type chip of a Texas instrument, the working voltage of the chip is 3V-40V, and the eight pins of the voltage stabilizing module are respectively a current detection pin 1, a compensation pin 2, a feedback pin 3, an analog ground pin 4, a power ground pin 5, a driving pin 6, an enabling pin 7 and an input pin 8 according to the sequence of rotating from the left upper counterclockwise.

The voltage stabilizing module U8 can receive the voltage reduced by the automobile power battery, and can also be a small storage battery/battery from the automobile except the automobile power battery, and the small storage battery/battery can be equipment for supplying power to additional equipment of a new energy automobile, such as additional equipment of a sound, a navigator, an air conditioner or a lamp.

In the coupling process, a technical means of overlapping pulse voltage with the voltage after the protection circuit 104 is utilized, that is, after the direct-current voltage obtained by a filter circuit (see the filter circuit composed of capacitors C43 and C44 and an inductor L4 in fig. 5) and the pulse voltage obtained by a pulse switching circuit are coupled and rectified, a pilot voltage is obtained, but after the current pilot voltage is coupled by the pulse voltage once, the 12V pilot voltage required by the charging pile is not necessarily satisfied, therefore, further, the DC-DC conversion circuit may further include a voltage division circuit (for example, a plurality of resistors are connected in series for voltage division), so that the voltage is divided by the voltage division circuit and fed back to the feedback pin 3, and in the voltage stabilization module, the feedback pin 3 and the driving pin 6 have a corresponding relationship, that the voltage received by the feedback signal is increased or decreased, the voltage output by the driving pin 6 has a corresponding frequency change, the duty ratio of the pulse voltage can be affected by the frequency change, so that at each clock, the pilot voltage can be continuously adjusted until the required 12V pilot voltage is obtained, and the frequency of the charging pile can be controlled by the clock pin 7, and the pulse voltage can be obtained within a short time.

In some embodiments, as shown in fig. 5, the pulse switching circuit includes a first field effect transistor Q5 and a fifth resistor R133; the drain electrode of the first field effect transistor Q5 is connected with the output end of the filter circuit, the grid electrode of the first field effect transistor Q5 is connected with the driving pin 6, the source electrode of the first field effect transistor Q5 is connected with one end of the fifth resistor R133, and the other end of the fifth resistor R133 is grounded.

It should be noted that, the model of the first field effect transistor Q5 is DMN6140, and the gate of the first field effect transistor Q5 is connected to the driving pin 6, so that pulse voltages with different duty ratios can be output according to signals sent by the driving pin 6.

In some embodiments, the DC-DC conversion circuit further includes an eleventh capacitor C60, a sixth resistor R152, a twelfth capacitor C47, and a seventh resistor R103, where the eleventh capacitor C60 and the sixth resistor R152 form a low pass filter and are connected between the gate of the first fet Q5 and the driving pin 6, one end of the seventh resistor R103 is connected between the source of the first fet Q5 and the fifth resistor R133, the other end of the seventh resistor R103 is connected to the twelfth capacitor C47, a connection position of the twelfth capacitor C47 and the seventh resistor R103 is connected to the current detection pin 1 of the voltage regulation module U8, and the other end of the twelfth capacitor C47 is grounded.

And the current detection pin 1 is used for detecting the working current of the first field effect transistor Q5.

It should be noted that the current detection pin 1 can accurately obtain the working current of the first field-effect transistor Q5, and then obtain the working voltage of the first field-effect transistor Q5 according to the resistance value of the seventh resistor R103, so that a maintainer of the new energy vehicle can conveniently obtain the working condition of the first field-effect transistor Q5, and the maintenance is convenient.

In some embodiments, the coupling rectification circuit includes a thirteenth capacitor C33, a fifth inductor L5, and an eighth diode D8; one end of the thirteenth capacitor C33 is connected to the drain of the first field-effect transistor Q5, the other end of the thirteenth capacitor C is connected to one end of the fifth inductor L5, and the other end of the fifth inductor L5 is grounded; the connecting position of the thirteenth capacitor C33 and the fifth inductor L5 is connected to the anode of the eighth diode D8, and the cathode of the eighth diode D8 is connected to the feedback pin 3 of the voltage regulator module U8.

It should be noted that the coupling rectification circuit herein has a coupling rectification function, but is only the simplest coupling rectification circuit, and a person skilled in the art may adjust the device matching of the coupling rectification circuit according to the pricing of the new energy vehicle, and the model of the eighth diode D8 (for example, a schottky diode), where the model of the schottky diode is MBRS130LT3, and after the vehicle battery power supply is filtered, the vehicle battery power supply is already a stable dc voltage, so that only the thirteenth capacitor C33 and the fifth inductor L5 need to be coupled, a positive and negative alternating pulse voltage greater than the output of the first field-effect transistor Q5 can be obtained, and after obtaining such pulse voltage, a unidirectional filter device of a unidirectional bridge type is passed through, and a schottky diode is selected for unidirectional filtering.

In some embodiments, a radiation-resistant circuit is further arranged between the pulse switch circuit and the coupling rectification circuit;

the radiation-resistant circuit comprises an eighth resistor R132 and a fourteenth capacitor C45;

one end of the eighth resistor R132 is disposed between the drain of the first field effect transistor Q5 and the thirteenth capacitor C33, the other end of the eighth resistor R132 is connected to one end of the fourteenth capacitor C45, and the other end of the fourteenth capacitor C45 is connected to the other end of the fourteenth capacitor C45.

It should be noted that the anti-radiation circuit is designed to prevent the magnetic field caused by the continuous pulse voltage from possibly affecting the internal devices of the new energy automobile, so that the anti-radiation circuit is added to reduce the electromagnetic interference of the circuit itself to the outside.

In some embodiments, the cradle further comprises a cradle lock 108 and a lock driving circuit, the lock driving circuit is integrated in the charge and discharge control module 203, and the charge and discharge control module 203 controls whether the protection circuit 104 outputs a stable voltage to the lock driving circuit, so as to control the forward rotation and the reverse rotation of the cradle lock 108.

It can be understood that the charging and discharging control module 203 controls whether the protection circuit 104 outputs the stable voltage to the lock driving circuit, when it is determined that the new energy vehicle is in the non-charging state or the discharging state, the charging and discharging control module 203 may suspend outputting the on-state control signal to the switching tube in the lock driving circuit, so that the switching tube is in the off state, and thus the switching tube cuts off the power supply of the lock driving circuit, and the lock driving circuit stops working, thereby saving the power consumption of the new energy vehicle in the non-charging state or the discharging state, in which the charging and discharging control module 203 still outputs the on-state control signal to the lock driving circuit, and in which the lock driving circuit is still in the standby state, and reducing the power consumption of the vehicle-mounted power supply module of the new energy vehicle in the non-charging state.

In some embodiments, the cradle 100 can further include a cover lock 106, and the charge and discharge control module 203 controls whether the protection circuit 104 outputs a stable voltage to the lock driving circuit, so as to control the forward rotation and the reverse rotation of the cover lock 106.

It will be appreciated that the receptacle lock 108 and the cover lock 106 are controlled simultaneously by the same lock drive circuit.

Specifically, as shown in fig. 6, a lock driving circuit is provided.

In fig. 6, the lock driving circuit includes a motor chip U9 and a power supply driving module. The motor chip U9 herein is an eight-pin chip, and the eight pins are a ground pin 01, a reverse rotation input pin 02, a forward rotation input pin 03, an enable pin 04, a power supply pin 05, a forward rotation output pin 06, a feedback pin 07, and a reverse rotation output pin 08, respectively, in order of counterclockwise rotation from the upper left.

The output end of the power supply driving module is connected with a power supply pin of a motor chip U9, a forward rotation input pin and a reverse rotation input pin of the motor chip U9 are connected with a signal output end of the charge and discharge control module 203, and a forward rotation output pin and a reverse rotation output pin of the motor chip U9 are used for being connected with the socket lock 108 and/or the cover lock 106.

Specifically, the power supply driving module includes a second field effect transistor Q14 and a triode Q15, a drain of the second field effect transistor Q14 is connected to the output end of the protection circuit 104, a source of the second field effect transistor Q14 is connected to the power supply pin 05 of the motor chip U9, a gate of the second field effect transistor Q14 is connected to a collector of the triode Q15, an emitter of the triode Q15 is connected to ground, and a base of the triode Q15 is connected to the power supply control signal output end of the charge and discharge control module 203.

When the charging and discharging control module 203 stops outputting a conducting control signal to a switching tube in the lock driving circuit, the triode Q15 and the second field effect tube Q14 are in a cut-off state, so that the switching tube cuts off the power supply of the lock driving circuit, and the lock driving circuit stops working; when the charging and discharging control module 203 outputs a conducting control signal to a switching tube in the lock driving circuit, the triode Q15 and the second field effect tube Q14 are in a conducting state, the power supply module 201 supplies power to the lock driving circuit through the protection circuit 104, the lock driving circuit starts to work, and the charging and discharging control module 203 can control the forward rotation and the reverse rotation of the socket lock 108 or the cover lock 106.

As shown in fig. 6, the lock driving circuit further includes a tenth resistor R95 and an eleventh resistor R96, one end of the tenth resistor R95 is connected to the feedback pin 07 of the motor chip U9, the other end of the tenth resistor R95 is connected to the signal input end of the charge and discharge control module 203, one end of the eleventh resistor R96 is connected between the feedback pin 07 and the tenth resistor R95, and the other end of the eleventh resistor R96 is grounded.

Therefore, the feedback pin 07 of the motor chip U9 is connected with the signal input end of the charge and discharge control module 203, so that a first driving current in the locking process of the electronic lock (the cover lock 106 or the socket lock 108 and the like) can be obtained, the state of the electronic lock is judged according to the first driving current, and through the mode, the locking condition of a charging plug or a discharging plug of a user of the new energy automobile can be informed, the virtual connection of the charging plug or the discharging plug is avoided, and the charge and discharge quality of the new energy automobile is ensured.

In order to highlight the feedback function, fig. 2 shows a simplified configuration of components corresponding to the feedback function as a cover lock state detection module 107 and a socket lock state detection module 109. It is understood that in other embodiments, the cover lock state detection module 107 and the socket lock state detection module 109 may be a single device such as a current meter rather than a detection circuit.

In some embodiments, the lock driving circuit further includes an enabling module, the enabling module includes a ninth resistor R97 and a fifteenth capacitor C35, one end of the ninth resistor R97 is connected to the positive electrode of the power supply, the other end of the ninth resistor R97 is connected to the fifteenth capacitor C35, the other end of the fifteenth capacitor C35 is connected to ground, and a connection position of the ninth resistor R97 and the fifteenth capacitor C35 is connected to the enabling pin 04 of the motor chip U9. Therefore, the normal working state of the motor chip U9 is guaranteed through the enabling module.

In some embodiments, the charging dock 100 further includes an illumination circuit 110, an input terminal of the illumination circuit 110 is connected to an output terminal of the charge and discharge control module 203, and the charge and discharge control module 203 sends an illumination driving signal to the illumination circuit 110 according to a control signal of the general control module. In particular, the lighting circuit 110 may be a control circuit comprising an LED lamp.

In some embodiments, the charging dock 100 further includes a status indication circuit 111, an input terminal of the status indication circuit 111 is connected to an output terminal of the charge and discharge control module 203, and the charge and discharge control module 203 sends a status indication conducting signal to the status indication circuit 111 according to the control signal of the overall control module. Specifically, the status indication circuit 111 may be a control circuit including various status indication lamps and a display screen to indicate information such as electric quantity, current, voltage, etc. during charging and discharging.

In some embodiments, the charging dock 100 further includes a dc power positive temperature detection device 112 and a dc power negative temperature detection device 113, and output terminals of the dc power positive temperature detection device 112 and the dc power negative temperature detection device 113 are connected to an input terminal of the charge and discharge control module 203. The charge and discharge control module 203 may control charge and discharge power, charge and discharge time, and the like in the charge and discharge process according to the temperatures detected by the two temperature detection devices.

Specifically, both the dc power supply positive electrode temperature detection device 112 and the dc power supply negative electrode temperature detection device 113 may be NTC temperature sensors.

By utilizing the embodiment, the charging and discharging guide module is arranged, the guide signal matched with the charging gun or the discharging gun is generated according to the charging and discharging control signal output by the charging and discharging control module, the charging process of the electric automobile is realized or the discharging process of the electric automobile to an external load is realized, the charging and discharging control module is integrated in the integrated charging module control module at the vehicle control end, the charging and discharging control function can be realized only by programming the integrated charging module control module, and the circuit design of the whole charging and discharging control system is simplified; in addition, except for the charging and discharging control process, the rest controls such as a charging and discharging state indicator lamp, a socket lock and a cover lock are all realized by a charging and discharging control module, and information fed back by each controlled component CAN be uploaded to a vehicle CAN bus in time, so that the control process CAN be efficiently and quickly completed; moreover, after the pulse voltage and a vehicle-mounted battery power supply (power supply module) are coupled and rectified through the DC-DC conversion circuit, stable guide voltage is obtained, and the requirement of a charging pile of the new energy automobile on the guide voltage can be met.

It should be understood that, in various embodiments herein, the sequence numbers of the above-mentioned processes do not mean the execution sequence, and the execution sequence of each process should be determined by its function and inherent logic, and should not constitute any limitation to the implementation process of the embodiments herein.

It should also be understood that, in the embodiments herein, the term "and/or" is only one kind of association relation describing an associated object, meaning that three kinds of relations may exist. For example, a and/or B, may represent: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter associated objects are in an "or" relationship.

Those of ordinary skill in the art will appreciate that the various illustrative components and algorithm steps described in connection with the embodiments disclosed herein may be implemented as electronic hardware, computer software, or combinations of both, and that the components and steps of the various examples have been described above generally in terms of their functionality in order to clearly illustrate this interchangeability of hardware and software. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the implementation. Skilled artisans may implement the described functionality in varying ways for each particular application, but such implementation decisions should not be interpreted as causing a departure from the scope of the present disclosure.

It can be clearly understood by those skilled in the art that, for convenience and simplicity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided herein, it should be understood that the disclosed system, apparatus, and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may also be an electric, mechanical or other form of connection.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purposes of the embodiments herein.

In addition, functional units in the embodiments herein may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit may be implemented in the form of hardware, or may also be implemented in the form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a separate product, may be stored in a computer readable storage medium. Based on such understanding, the technical solutions of the present invention may be implemented in the form of a software product, which is stored in a storage medium and includes several instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the methods of the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a portable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, an optical disk, or other various media capable of storing program codes.

The principles and embodiments of this document are explained herein using specific examples, which are presented only to aid in understanding the methods and their core concepts; meanwhile, for the general technical personnel in the field, according to the idea of this document, there may be changes in the concrete implementation and the application scope, in summary, this description should not be understood as the limitation of this document.

Claims

1. A charge-discharge control system, characterized by comprising:

the charging seat at least comprises a charging and discharging guide module;

2. The charging and discharging control system of claim 1, wherein the integrated charging module control module is in data and signal communication with a control module of a vehicle through a CAN bus or an ethernet.

3. The charging and discharging control system according to claim 1, wherein the charging dock further comprises a protection circuit, an input end of the protection circuit is connected to an output end of a power supply module of the vehicle control end, and an output end of the protection circuit is connected to an input end of the charging and discharging control module, and is configured to filter an interference signal and then output a stable voltage to the charging and discharging control module.

4. The charging and discharging control system according to claim 3, wherein the charging dock further comprises a DC-DC converting circuit, an input terminal of the DC-DC converting circuit is connected to the protection circuit and an output terminal of the charging and discharging control module, and an output terminal of the DC-DC converting circuit is connected to an input terminal of the charging and discharging guiding module.

5. The charge-discharge control system according to claim 4, wherein the DC-DC conversion circuit includes:

the filter circuit is connected with an input pin of the voltage stabilizing module and is used for filtering noise fluctuation of the power supply to obtain direct-current voltage;

6. The charge and discharge control system according to claim 5, wherein the pulse switching circuit includes a first field effect transistor (Q5) and a fifth resistor (R133);

7. The charging and discharging control system according to claim 6, wherein the DC-DC conversion circuit further comprises an eleventh capacitor (C60), a sixth resistor (R152), a twelfth capacitor (C47) and a seventh resistor (R103), the eleventh capacitor (C60) and the sixth resistor (R152) form a low pass filter and are connected between the gate of the first fet and the driving pin, one end of the seventh resistor (R103) is connected between the source of the first fet and the fifth resistor (R133), the other end of the seventh resistor is connected to the twelfth capacitor (C47), the connection position of the twelfth capacitor and the seventh resistor is connected to the current detection pin of the voltage regulation module, and the other end of the twelfth capacitor is grounded.

8. The charging and discharging control system according to claim 7, wherein the coupling rectification circuit comprises a thirteenth capacitor (C33), a fifth inductor (L5) and an eighth diode (D8);

one end of the thirteenth capacitor (C33) is connected with the drain electrode of the first field effect transistor, the other end of the thirteenth capacitor is connected with one end of the fifth inductor (L5), and the other end of the fifth inductor (L5) is grounded;

and the connecting position of the thirteenth capacitor (C33) and the fifth inductor (L5) is connected with the anode of the eighth diode, and the cathode of the eighth diode is connected with the feedback pin of the voltage stabilizing module.

9. The charge and discharge control system according to claim 8, wherein a radiation-resistant circuit is further provided between the pulse switching circuit and the coupling rectification circuit;

the radiation-resistant circuit comprises an eighth resistor (R132) and a fourteenth capacitor (C45);

one end of the eighth resistor is arranged between the drain electrode of the first field effect transistor and the thirteenth capacitor (C33), the other end of the eighth resistor is connected with one end of the fourteenth capacitor (C45), and the other end of the fourteenth capacitor (C45) is connected.

10. The charge and discharge control system according to claim 1, wherein the charge and discharge guidance module includes a vehicle-to-load discharge control guidance circuit and a charge guidance circuit.

11. The charge and discharge control system according to claim 10, wherein an output terminal of the vehicle-to-load discharge control pilot circuit is connected to the discharge gun; the input end of the charging guide circuit is connected with the charging gun.