New energy charging and discharging integrated control equipment

Abstract

The invention discloses new energy charging and discharging integrated control equipment, which comprises a charging and discharging gun head, a charging and discharging control module and a plug which are connected in sequence, and is characterized in that the charging and discharging control module comprises a control unit and a switching circuit connected with the control unit, and the switching circuit is provided with a relay unit; the plug is connected to a mains supply, the charge-discharge control module is used for detecting the charge-discharge state, and the charge-discharge gun head is inserted into a vehicle end socket; during charging, the control unit outputs a charging signal to the switching circuit so as to close the relay unit; and during discharging, the switching circuit outputs a discharging signal to the control unit, and the control unit identifies and outputs a switching signal to the switching circuit so as to switch to a discharging state. The charging and discharging gun head, the charging and discharging control module and the plug which are connected in sequence are adopted to achieve charging and discharging of the new energy automobile, the integrated design is achieved, the occupied space is reduced, operation is easy, and the problem that charging and discharging are disordered and potential safety hazards are not likely to be caused is solved.

Description

Technical Field

[0001] The present invention relates to the field of new energy charging technology, and in particular to a new energy charging and discharging integrated control device. Background Art

[0002] With the rapid increase in new energy vehicles, charging piles for electric vehicles have brought huge challenges to the safe operation of the power grid. Therefore, more and more new energy vehicles have discharge functions, which can achieve peak shaving and valley filling, making the power grid operate more smoothly and safely. The discharge of new energy vehicles can provide customers with various emergency and electricity-requiring scenarios in the absence of a power grid, bringing customers a better experience.

[0003] The existing charging mode and discharging mode devices are separated, or adapters are required for charging and discharging conversion. This will result in a large number of charging and discharging devices, which not only takes up space in the car, but also makes the customer's operation cumbersome and prone to operating errors, resulting in charging and discharging confusion and safety hazards. Summary of the invention

[0004] The main purpose of the present invention is to propose a new energy charging and discharging integrated control device, which aims to solve the problem that there are many charging and discharging devices, which not only take up space in the car, but also make the customer's operation cumbersome and prone to operating errors, resulting in charging and discharging chaos and safety hazards.

[0005] To achieve the above-mentioned purpose, the present invention proposes a new energy charging and discharging integrated control device, comprising a charging and discharging gun head, a charging and discharging control module, and a plug connected in sequence, wherein the charging and discharging control module comprises a control unit and a switching circuit connected to the control unit, wherein the switching circuit is provided with a relay unit;

[0006] The plug is connected to the mains, the charge and discharge control module is to detect the charge and discharge status, and the charge and discharge gun head is inserted into the vehicle-end socket;

[0007] During charging, the control unit outputs a charging signal to the switching circuit to close the relay unit;

[0008] During discharge, the switching circuit outputs a discharge signal to the control unit, and the control unit recognizes and outputs a switching signal to the switching circuit to switch to a discharge state.

[0009] In one embodiment, the charge and discharge control module also includes a charge and discharge detection circuit, which is connected to the switching circuit, and the charge and discharge detection circuit is used to confirm the connection status of the new energy integrated charge and discharge control device and control the charging current.

[0010] In one embodiment, the charge and discharge detection circuit includes a first operational amplifier, a first resistor, a second resistor, and an inductor. The CC signal is input into the non-inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to one end of the first resistor, the other end of the first resistor is respectively connected to one end of the second resistor and the inductor, and the other end of the second resistor is grounded.

[0011] In one embodiment, the charge and discharge detection circuit includes a first capacitor and a second capacitor, one end of the first capacitor is connected to the non-inverting input terminal of the first operational amplifier, one end of the second capacitor is connected to the inverting input terminal of the first operational amplifier, and the other end of the first capacitor and the other end of the second capacitor are both grounded.

[0012] In one embodiment, the charge and discharge control module also includes a TS detection circuit, which is connected to the switching circuit. The TS detection circuit includes a second operational amplifier, a voltage divider bias circuit, a touch spring, and a third resistor. The third resistor and the touch spring are respectively connected to the inverting input terminal of the second operational amplifier, and the output terminal of the second operational amplifier is connected to the voltage divider bias circuit. The voltage divider bias circuit outputs a contact status signal of the touch spring.

[0013] In one embodiment, the voltage divider bias circuit includes a fourth resistor, a fifth resistor, and a first transistor, one end of the fourth resistor is connected to the output end of the second operational amplifier, and the other end of the fourth resistor and one end of the fifth resistor are respectively connected to the base of the transistor.

[0014] In one embodiment, the switching circuit includes a self-locking switch, and a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor all connected to the self-locking switch, the sixth resistor and the seventh resistor are connected in series, and the eighth resistor and the ninth resistor are connected in series.

[0015] In one embodiment, the self-locking switch is a double-pole double-throw switch.

[0016] In one embodiment, the self-locking switch includes a first static contact led between the sixth resistor and the seventh resistor, a second static contact led between the eighth resistor and the ninth resistor, a third static contact led from the first signal end of the switching circuit, a fourth static contact led from the second signal end of the switching circuit, a first moving contact led between the sixth resistor and the eighth resistor, and a second moving contact led from the third signal end of the switching circuit;

[0017] When the first moving contact is connected to the first static contact, the second moving contact is connected to the third static contact; at this time, the new energy charging and discharging integrated control device is in a charging state or a discharging state;

[0018] When the first moving contact is connected to the second static contact, the second moving contact moves and connects to the fourth static contact. At this time, the new energy charging and discharging integrated control device is in a discharging state or a charging state.

[0019] In one embodiment, the charge and discharge control module further includes an input isolated power supply and an output isolated power supply, and the input isolated power supply and the output isolated power supply are respectively connected to the control unit.

[0020] The present invention realizes charging and discharging for new energy vehicles by adopting a charging and discharging gun head, a charging and discharging control module, and a plug connected in sequence. The integrated design reduces the occupied space, is easy to operate, and is not prone to the problem of charging and discharging confusion and safety hazards. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0022] Figure 1 This is the module schematic diagram of the new energy charging and discharging integrated control equipment;

[0023] Figure 2 A switching circuit in a charging state;

[0024] Figure 3 is a switching circuit in a discharge state;

[0025] Figure 4 It is a charge and discharge detection circuit;

[0026] Figure 5 It is the TS detection circuit.

[0027] Description of Figure Numbers:

[0028] 10-charge and discharge gun head, 20-charge and discharge control module, 30-plug, 201-control unit, 202-switching circuit, 2021-relay unit, 204-charge and discharge detection circuit, C9-first operational amplifier, R29-first resistor, R31-second resistor, L2-inductor, C8-first capacitor, C9-second capacitor, 203-TS detection circuit, U1A-second operational amplifier, TS1-touch spring, R3-third resistor, R2-fourth resistor, R4-fifth resistor, Q1-first transistor, SW-self-locking switch, R4-sixth resistor, RC-seventh resistor, R4 / -eighth resistor, RC / -ninth resistor, 2-first static contact, 3-second static contact, 5-third static contact, 6-fourth static contact, 4-second moving contact.

[0029] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0031] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if the meaning of "and / or" appearing in the full text is to include three parallel schemes, taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] The present invention provides a new energy charging and discharging integrated control device.

[0034] In the embodiment of the present invention, Figure 1 As shown, the new energy charging and discharging integrated control device includes a charging and discharging gun head 10, a charging and discharging control module 20, and a plug 30 connected in sequence. The charging and discharging control module 20 includes a control unit 201 and a switching circuit 202 connected to the control unit 201. The switching circuit 202 is provided with a relay unit 2021;

[0035] The plug 30 is connected to the mains, the charge and discharge control module 20 is to detect the charge and discharge status, and the charge and discharge gun head 10 is inserted into the vehicle-end socket;

[0036] During charging, the control unit 201 outputs a charging signal to the switching circuit 202 to close the relay unit 2021;

[0037] During discharge, the switching circuit 202 outputs a discharge signal to the control unit 201 , and the control unit 201 recognizes and outputs a switching signal to the switching circuit 202 to switch to a discharge state.

[0038] The present invention realizes charging and discharging of new energy vehicles by using a charging and discharging gun head 10, a charging and discharging control module 20, and a plug 30 which are connected in sequence. The integrated design reduces the occupied space, is easy to operate, and is not prone to the problem of charging and discharging confusion and safety hazards.

[0039] The charge and discharge control module 20 further includes a charge and discharge detection circuit 204 , which is connected to the switching circuit 202 . The charge and discharge detection circuit 204 is used to confirm the connection status of the new energy charge and discharge integrated control device and control the charging current.

[0040] like Figure 4 As shown, the charge and discharge detection circuit 204 includes a first operational amplifier C9, a first resistor R29, a second resistor R31, and an inductor L2. The CC signal is input to the in-phase input terminal of the first operational amplifier C9, the output terminal of the first operational amplifier C9 is connected to one end of the first resistor R29, the other end of the first resistor R29 is respectively connected to one end of the second resistor R31 and the inductor L20, and the other end of the second resistor R31 is grounded.

[0041] The charge and discharge detection circuit 204 includes a first capacitor C8 and a second capacitor C9, one end of the first capacitor C8 is connected to the non-inverting input terminal of the first operational amplifier C9, one end of the second capacitor C9 is connected to the inverting input terminal of the first operational amplifier C9, and the other end of the first capacitor C8 and the other end of the second capacitor C9 are both grounded.

[0042] The first capacitor C8 blocks the direct current signal (DC) received by the non-inverting input terminal of the first operational amplifier C9, and only passes the alternating current signal (AC), thereby allowing the AC signal to pass and blocking the DC component. In this way, the DC offset can be filtered out, making the amplifier only sensitive to the AC component of the input signal. The second capacitor C9 is connected to the inverting input terminal of the first operational amplifier C9: Similar to the first capacitor C8, the second capacitor C9 also plays a similar role. By connecting to the inverting input terminal, the DC signal component is filtered out to ensure that the inverting input terminal receives a pure AC signal.

[0043] The charge and discharge detection circuit 204 is used to process differential signals (i.e., the difference between two input signals). The first operational amplifier C9 amplifies the difference between the two input signals and provides an amplified output; grounding the other end of the capacitor helps to set the reference voltage of the circuit so that the circuit works at the correct level and avoids excessive noise or interference to the input signal; grounding the first capacitor C8 and the second capacitor C9 can also stabilize the gain. For example, in a feedback loop, the capacitor helps to reduce high-frequency noise in the frequency response and balance the gain and bandwidth of the amplifier.

[0044] Through capacitive coupling and grounding, the gain of the circuit will change with the frequency of the input signal, playing a certain role in frequency selection and gain stabilization; the first capacitor C8 connected to the non-inverting input terminal and the second capacitor C9 connected to the inverting input terminal help reduce or eliminate the DC drift in the circuit, ensuring that the signal will not be affected by the bias voltage, thereby maintaining the working stability of the amplifier.

[0045] like Figure 5 As shown, the charge and discharge control module 20 also includes a TS detection circuit 203, and the TS detection circuit 203 is connected to the switching circuit 202. The TS detection circuit 203 includes a second operational amplifier U1A, a voltage divider bias circuit, a touch spring TS1, and a third resistor R3. The third resistor R3 and the touch spring TS1 are respectively connected to the inverting input terminal of the second operational amplifier U1A, and the output terminal of the second operational amplifier U1A is connected to the voltage divider bias circuit, and the voltage divider bias circuit outputs a contact state signal of the touch spring TS1.

[0046] The operational amplifier is used for signal amplification and processing in the TS detection circuit 203. The touch sensing signal is usually weak, and the second operational amplifier U1A is used to amplify the weak signal output by the sensor to a level more suitable for subsequent processing; it can also be used for signal filtering and stabilization to ensure that the final output voltage or current signal is accurate and stable.

[0047] The voltage divider bias circuit is used to provide a stable reference voltage for other circuits, or to set an appropriate operating voltage through resistor voltage division. For example, it may provide support for the reference voltage of the touch spring TS1, or provide a bias voltage for the input of the operational amplifier; it helps to ensure that the operating point of the circuit is stable, so that the circuit can work normally within the predetermined voltage range.

[0048] A touch spring TS1 is a physical component used for touch sensing, usually made of elastic material, that can detect the user's touch. The spring touch point will produce a small capacitance change or contact change when it touches the human body, triggering circuit detection.

[0049] The third resistor R3 is used to adjust the current or voltage in the circuit. It can set the sensitivity of the circuit and adjust the current or voltage level associated with the touch sensor. The choice of resistor helps control the characteristics of the touch response, such as touch sensitivity and response time.

[0050] The voltage divider bias circuit includes a fourth resistor R2, a fifth resistor R4, and a first transistor Q1, one end of the fourth resistor R2 is connected to the output end of the second operational amplifier U1A, and the other end of the fourth resistor R2 and one end of the fifth resistor R4 are respectively connected to the base of the first transistor Q1.

[0051] In this embodiment, the fourth resistor R2 and the fifth resistor R4 are used to divide the voltage, and the voltage-dividing bias circuit can effectively control the flow of current and prevent the circuit from operating in a non-ideal state, thereby improving the performance and output quality of the entire circuit.

[0052] The switching circuit 202 includes a self-locking switch SW, and a sixth resistor R4, a seventh resistor RC, an eighth resistor R4 / , and a ninth resistor RC / , all of which are connected to the self-locking switch SW. The sixth resistor R4 and the seventh resistor RC are connected in series, and the eighth resistor R4 / and the ninth resistor RC / are connected in series.

[0053] The self-locking switch SW is a double-pole double-throw switch; the double-pole double-throw switch can control the switching of two independent circuits at the same time, has a double-pole (two input ends) and double-throw (two output ends) structural design, and can quickly switch between multiple circuits; a single double-pole double-throw switch can replace multiple single-pole single-throw (SPST) or single-pole double-throw (SPDT) switches, saving installation space in the equipment; it can be used to change the direction of current, switch power, or select between two different circuit states. For example, the charging state and the discharging state of this embodiment; the double-pole double-throw switch has higher control flexibility and convenient operation. Users can achieve complex circuit control through simple switching; the double-pole double-throw switch performs well in circuits with higher loads, and can provide higher switching stability and longer service life.

[0054] like Figure 2 and Figure 3 As shown, the self-locking switch SW includes a first static contact 2 led out between the sixth resistor R4 and the seventh resistor RC, a second static contact 3 led out between the eighth resistor R4 / and the ninth resistor RC / , a third static contact 5 led out from the first signal end of the switching circuit 202, a fourth static contact 6 led out from the second signal end of the switching circuit 202, a first moving contact 1 led out between the sixth resistor R4 and the eighth resistor R4 / , and a second moving contact 4 led out from the third signal end of the switching circuit 202;

[0055] When the first moving contact 1 is connected to the first static contact 2, the second moving contact 4 is connected to the third static contact 5; at this time, the new energy charging and discharging integrated control device is in a charging state or a discharging state;

[0056] When the first moving contact 1 is connected to the second static contact 3, the second moving contact 4 moves to connect to the fourth static contact 6. At this time, the new energy charging and discharging integrated control device is in a discharging state or a charging state.

[0057] The charge and discharge control module 20 further includes an input isolated power supply and an output isolated power supply, and the input isolated power supply and the output isolated power supply are connected to the control unit 201 respectively.

[0058] This embodiment can realize integrated charge and discharge control without the need for redundant auxiliary accessories;

[0059] During the charging process, the switching circuit 202 switches to the charging state. Figure 2 , the plug 30 is inserted into the mains socket, the isolated power supply is input and starts working, the control unit 201 waits to detect the charging and discharging state, after the charging and discharging gun head 10 is inserted into the vehicle end socket, the switching circuit 202 transmits the charging signal to the control unit 201 for the charging state, at this time, the CP end of the control unit 201 outputs the corresponding charging PWM signal, and the closing relay unit 2021 is as shown Figure 1 Charging starts.

[0060] During the discharge process, the switching circuit 202 switches to the discharge state. Figure 3 , the plug 30 is inserted into the discharge socket of the charge and discharge control module 20, the charge and discharge gun head 10 is inserted into the vehicle-end socket, the vehicle-end turns on the discharge mode, the vehicle-end socket has AC output, the output isolation power supply starts working, the switching circuit 202 transmits the discharge signal to the control unit 201, the control unit 201 recognizes it, the plug 30 is inserted into the discharge socket, and the discharge signal is transmitted to the control unit 201 through the CF end of the plug 30 through the touch spring TS1 to achieve double discharge recognition, and the control unit 201 controls the relay unit 2021 to close.

[0061] The above description is only the preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications, combinations and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A new energy charging and discharging integrated control device, characterized in that: It includes a charging and discharging gun head, a charging and discharging control module, and a plug connected in sequence, wherein the charging and discharging control module includes a control unit and a switching circuit connected to the control unit, wherein the switching circuit is provided with a relay unit; The plug is connected to the mains, the charge and discharge control module is to detect the charge and discharge status, and the charge and discharge gun head is inserted into the vehicle-end socket; During charging, the control unit outputs a charging signal to the switching circuit to close the relay unit; During discharge, the switching circuit outputs a discharge signal to the control unit, and the control unit recognizes and outputs a switching signal to the switching circuit to switch to a discharge state.

2. The new energy charging and discharging integrated control device according to claim 1, characterized in that: The charge and discharge control module also includes a charge and discharge detection circuit, which is connected to the switching circuit and is used to confirm the connection status of the new energy charge and discharge integrated control device and control the charging current.

3. The new energy charging and discharging integrated control device according to claim 2, characterized in that: The charge and discharge detection circuit includes a first operational amplifier, a first resistor, a second resistor, and an inductor. The CC signal is input to the non-inverting input terminal of the first operational amplifier, the output terminal of the first operational amplifier is connected to one end of the first resistor, the other end of the first resistor is respectively connected to one end of the second resistor and the inductor, and the other end of the second resistor is grounded.

4. The new energy charging and discharging integrated control device according to claim 2, characterized in that: The charge and discharge detection circuit includes a first capacitor and a second capacitor, one end of the first capacitor is connected to the non-inverting input terminal of the first operational amplifier, one end of the second capacitor is connected to the inverting input terminal of the first operational amplifier, and the other end of the first capacitor and the other end of the second capacitor are both grounded.

5. The new energy charging and discharging integrated control device according to claim 1, characterized in that: The charge and discharge control module also includes a TS detection circuit, which is connected to the switching circuit. The TS detection circuit includes a second operational amplifier, a voltage divider bias circuit, a touch spring, and a third resistor. The third resistor and the touch spring are respectively connected to the inverting input terminal of the second operational amplifier, and the output terminal of the second operational amplifier is connected to the voltage divider bias circuit. The voltage divider bias circuit outputs a contact status signal of the touch spring.

6. The new energy charging and discharging integrated control device according to claim 5, characterized in that: The voltage divider bias circuit includes a fourth resistor, a fifth resistor, and a first transistor, one end of the fourth resistor is connected to the output end of the second operational amplifier, and the other end of the fourth resistor and one end of the fifth resistor are respectively connected to the base of the transistor.

7. The new energy charging and discharging integrated control device according to claim 1, characterized in that: The switching circuit includes a self-locking switch, and a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor all connected to the self-locking switch, the sixth resistor and the seventh resistor are connected in series, and the eighth resistor and the ninth resistor are connected in series.

8. The new energy charging and discharging integrated control device according to claim 7, characterized in that: The self-locking switch is a double-pole double-throw switch.

9. The new energy charging and discharging integrated control device according to claim 8, characterized in that: The self-locking switch includes a first static contact led between the sixth resistor and the seventh resistor, a second static contact led between the eighth resistor and the ninth resistor, a third static contact led from the first signal end of the switching circuit, a fourth static contact led from the second signal end of the switching circuit, a first moving contact led between the sixth resistor and the eighth resistor, and a second moving contact led from the third signal end of the switching circuit; When the first moving contact is connected to the first static contact and the second moving contact is connected to the third static contact, the new energy charging and discharging integrated control device enters a charging state or a discharging state; When the first moving contact is connected to the second static contact, and the second moving contact moves to connect to the fourth static contact, the new energy charging and discharging integrated control device enters a charging and discharging state, which is a discharging state or a charging state.

10. The new energy charging and discharging integrated control device according to claim 1, characterized in that: The charge and discharge control module also includes an input isolated power supply and an output isolated power supply, and the input isolated power supply and the output isolated power supply are respectively connected to the control unit.

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