Drive control circuit, method, control device and storage medium

Abstract

The present application provides a driving control circuit, method, control device and storage medium, wherein the driving control circuit includes a driving unit, a switch unit and a relay, wherein the switch unit is connected between the driving unit and the relay; wherein: the driving unit is used to provide a driving signal; the switch unit is used to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit; the relay is used to control the action of the first contact of the relay to meet a preset closing condition according to the forward driving signal when the relay is in the closing process; or, when the relay is in the disconnecting process, control the action of the first contact of the relay to meet a preset disconnecting condition according to the reverse driving signal. In this way, by providing different driving signals, the closing impact force of the relay can be reduced when it is closed, and the contact disconnecting speed can be increased when it is disconnected, thereby reducing the probability of adhesion of the relay.

Description

Technical Field

[0001] The present application relates to the field of relay technology, and in particular, to a drive control circuit, method, control device and storage medium. Background Art

[0002] High-voltage DC relay is a key safety device used in the field of new energy to provide isolation and control between Class A voltage and Class B voltage. At present, high-voltage DC relays used in new energy vehicles include various coils and iron cores installed inside the insulating shell, as well as contact systems. As long as a certain voltage is applied to both ends of the high-voltage DC relay, a certain current will flow through the coil inside it, thereby generating an electromagnetic effect, causing the moving contact to be attracted to the iron core under the action of electromagnetic attraction and close with the static contact. When the coil is powered off, the electromagnetic attraction disappears, the moving contact returns to its original position, and is disconnected from the static contact. Through this closing / disconnecting, the purpose of controlling the on / off of the circuit is achieved.

[0003] In the related art, the adhesion of the moving and static contacts of the high-voltage DC relay is the main reason for its failure. The failure mechanism is that the relay generates an arc during the closing / breaking process, which causes the contact to be consumed and then adhere. Among them, the bounce time, breaking speed, and breaking force are important factors affecting adhesion. However, the bounce time is determined by factors such as the relay contact material and driving power, and the breaking speed and breaking force are determined by the relay return spring K value. The contact material, driving power, and return spring K value are difficult to modify, so the relay adhesion is difficult to improve. Summary of the invention

[0004] The present application mainly provides a drive control circuit, method, control device and storage medium, which provide different drive signals when the relay is closed and disconnected, can reduce the closing impact force when closing, and accelerate the disconnection of contacts when disconnecting, thereby reducing the probability of relay adhesion.

[0005] The technical solution of this application is implemented as follows:

[0006] In a first aspect, an embodiment of the present application provides a drive control circuit, the drive control circuit comprising a drive unit, a switch unit and a relay, wherein the switch unit is connected between the drive unit and the relay; wherein:

[0007] A driving unit, used for providing a driving signal;

[0008] A switch unit, used for providing a forward drive signal or a reverse drive signal to the relay according to the drive signal and the switch state in the switch unit;

[0009] A relay is used to control the action of the first contact of the relay to meet a preset closing condition according to a forward driving signal when the relay is in a closing process; or to control the action of the first contact of the relay to meet a preset breaking condition according to a reverse driving signal when the relay is in a breaking process.

[0010] Through the above technical means, when the relay is in the closing process, a forward drive signal is provided to the relay, and when the relay is in the disconnecting process, a reverse drive signal is provided to the relay. In this way, the bounce time of the contact during the closing process is reduced, and the breaking force of the contact during the disconnecting process is increased, the breaking speed is improved, and the probability of adhesion failure of the relay is reduced.

[0011] In some embodiments, the switch unit includes a first set of switches and a second set of switches, wherein:

[0012] A switch unit is used to provide a forward drive signal to the relay according to the drive signal when the first group of switches is in the on state and the second group of switches is in the off state; or a switch unit is used to provide a reverse drive signal to the relay according to the drive signal when the first group of switches is in the off state and the second group of switches is in the on state.

[0013] By means of the above technical means, the on or off of the first and second switches is controlled, which not only achieves the effect of controlling the drive control circuit to provide a forward drive signal or a reverse drive signal to the relay, but also improves the circuit's multiplexing capability.

[0014] In some embodiments, the drive control circuit further includes an adjustment unit, which is connected to the output end of the drive unit, wherein:

[0015] The adjustment unit is used to receive a control command according to the current state of the relay; and adjust the size of the forward drive signal or the reverse drive signal according to the control command.

[0016] Through the above technical means, the adjustment unit receives the control command according to the current state of the relay to adjust the size of the drive signal, thereby achieving a better control effect and reducing the probability of relay adhesion.

[0017] In some embodiments, the relay includes an adjustment unit connected to an output terminal of the switch unit, wherein:

[0018] The adjustment unit is used to receive a control command according to the current state of the relay; and adjust the size of the forward drive signal or the reverse drive signal according to the control command.

[0019] Through the above technical means, the adjustment unit adjusts the size of the drive signal according to the control command, thereby achieving a better control effect and reducing the probability of relay adhesion.

[0020] In some embodiments, when the relay is in the closing process, if the current state of the relay satisfies a first preset condition, the adjustment unit is used to receive a first control command and control the forward drive signal to decrease according to the first control command so that the action of the first contact of the relay satisfies the preset closing condition.

[0021] Through the above technical means, the adjustment unit controls the forward drive signal to decrease only when the current state of the relay meets the first preset condition, thereby reducing the contact closing speed and the closing impact force.

[0022] In some embodiments, the current state of the relay satisfies the first preset condition, including:

[0023] The power-on time of the relay is greater than the first time threshold; or, the closing speed of the relay is greater than the first speed threshold.

[0024] Through the above-mentioned technical means, when the power-on time of the relay is greater than the first time threshold, or the closing speed of the relay is greater than the first speed threshold, the adjustment unit controls the driving unit to output a reduced positive driving signal to the relay, controls the first contact to reduce the closing speed and reduce the closing impact force, thereby reducing the rebound time and reducing the probability of adhesion.

[0025] In some embodiments, when the relay is in the disconnecting process, if the current state of the relay meets the second preset condition, the adjustment unit is used to receive a second control command and control the reverse drive signal to decrease according to the second control command so that the action of the first contact of the relay meets the preset disconnecting condition.

[0026] Through the above technical means, the adjustment unit controls the reverse drive signal to decrease according to the second control command, so that the action of the first contact of the relay meets the preset breaking condition, thereby accelerating the breaking speed, accelerating the arc extinction, and reducing the probability of adhesion.

[0027] In some embodiments, when the relay is in the disconnecting process, if the current state of the relay meets the second preset condition, the adjustment unit is used to receive a third control command and control the reverse drive signal to be closed according to the third control command so that the action of the first contact of the relay meets the preset disconnecting condition.

[0028] Through the above technical means, the adjustment unit controls the reverse drive signal to be turned off according to the third control command, thereby improving the control accuracy of the current state of the relay to achieve the best control effect.

[0029] In some embodiments, the current state of the relay satisfies the second preset condition, including:

[0030] The power-off time of the relay is greater than the second time threshold; or, the disconnection speed of the relay is greater than the second speed threshold.

[0031] Through the above-mentioned technical means, a reverse drive signal is provided to the relay when the relay is turned off, and when the power-off time of the relay is greater than the second time threshold, or the breaking speed of the relay is greater than the second speed threshold, the reverse drive signal is controlled to be reduced or turned off, thereby increasing the breaking force of the relay, thereby controlling the first contact to speed up the breaking speed, speed up the arc extinction, and reduce the probability of adhesion.

[0032] In some embodiments, the relay is further used to control the first contact of the relay to be separated from the connection position according to the reverse drive signal when the first contact of the relay is adhered to the corresponding connection position and the adhesion time exceeds a first preset time.

[0033] Through the above technical means, when the adhesion time exceeds the first preset time, a reverse drive signal is provided to the relay, so that the slightly adhered contacts can be pulled apart, reducing the probability of relay adhesion failure.

[0034] In some embodiments, when the adhesion time of the relay exceeds the second preset time and it is detected that the first contact of the relay is not adhered to the corresponding connection position, the adjustment unit is also used to receive a fourth control command and control the reverse drive signal to be turned off according to the fourth control command.

[0035] Through the above technical means, after the relay is stuck, a reverse drive signal is provided to the relay until a second preset time, so that the slightly stuck contacts are pulled apart within the response time, which can reduce the probability of relay sticking failure.

[0036] In some embodiments, the relay is further configured to send a sticking alarm signal when the sticking time of the relay exceeds a second preset time and it is detected that the first contact of the relay is stuck to the corresponding connection position.

[0037] Through the above technical means, if the adhesion position is still not pulled apart after the second preset time, an alarm is triggered, thereby promptly informing the customer of the abnormality and avoiding a timeout response.

[0038] In a second aspect, an embodiment of the present application provides a drive control method, the method comprising:

[0039] Sending a driving command to the driving unit so that the driving unit provides a driving signal;

[0040] Determine whether to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit;

[0041] When the relay is in the closing process, the action of the first contact of the relay is controlled according to the forward drive signal to meet the preset closing condition; or, when the relay is in the disconnecting process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnecting condition.

[0042] Through the above technical means, the control device controls the drive unit and the switch unit to provide a forward drive signal to the relay when the relay is in the closing process, and controls the drive unit and the switch unit to provide a reverse drive signal to the relay when the relay is in the disconnecting process. In this way, the bounce time of the contact during the closing process is reduced, the breaking force of the contact during the disconnecting process is increased, the breaking speed is improved, and the probability of adhesion failure of the relay is reduced.

[0043] In some embodiments, the switch unit includes a first group of switches and a second group of switches; the method further includes: sending a first switch command and a second switch command to the switch unit; determining the switch state in the switch unit according to the first switch command and the second switch command; wherein the first switch command is used to control the first group of switches to be in an on or off state, and the second switch command is used to control the second group of switches to be in an on or off state.

[0044] Through the above technical means, the first group of switches and the second group of switches are controlled by the first switch command and the second switch command respectively, so as to achieve the effect that the switch unit controls the driving signal to be a forward driving signal or a reverse driving signal.

[0045] In some embodiments, determining whether to provide a forward drive signal or a reverse drive signal to the relay is based on the drive signal and the switch state in the switch unit, including: when the first group of switches is in the on state and the second group of switches is in the off state, determining the forward drive signal to provide the relay with the drive signal; or, when the first group of switches is in the off state and the second group of switches is in the on state, determining the reverse drive signal to provide the relay with the drive signal.

[0046] Through the above-mentioned technical means, the control device sends a first switch instruction to the first group of switches and a second switch instruction to the second group of switches, thereby controlling the switching state of the switch unit, thereby achieving the effect of controlling the provision of a forward drive signal or a reverse drive signal to the relay and improving the multiplexing of the circuit.

[0047] In some embodiments, when the relay is in the closing process, the action of the first contact of the relay is controlled according to the forward drive signal to meet the preset closing condition, including: if the current state of the relay meets the first preset condition, sending a first control command to the adjustment unit; wherein the first control command is used to control the forward drive signal to decrease so that the action of the first contact of the relay meets the preset closing condition.

[0048] Through the above technical means, the control device sends a first control command to the adjustment unit to control the adjustment unit to adjust the size of the forward drive signal, thereby achieving a better control effect and reducing the sticking probability of the relay.

[0049] In some embodiments, the current state of the relay satisfies a first preset condition, including: a power-on time of the relay is greater than a first time threshold; or a closing speed of the relay is greater than a first speed threshold.

[0050] Through the above technical means, the control device determines whether the power-on time or closing speed of the relay meets the first preset condition, thereby achieving a better control effect and reducing the probability of relay adhesion.

[0051] In some embodiments, when the relay is in the disconnecting process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnecting condition, including: if the current state of the relay meets the second preset condition, a second control command is sent to the adjustment unit; wherein the second control command is used to control the reverse drive signal to decrease so that the action of the first contact of the relay meets the preset disconnecting condition.

[0052] Through the above technical means, the control device sends a second control command to the adjustment unit to control the reverse drive signal to decrease, so that the action of the first contact of the relay meets the preset breaking condition, thereby accelerating the breaking speed, accelerating the arc extinction, and reducing the probability of adhesion.

[0053] In some embodiments, when the relay is in the disconnection process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnection condition, including: if the current state of the relay meets the second preset condition, a third control command is sent to the adjustment unit; wherein the third control command is used to control the reverse drive signal to be turned off so that the action of the first contact of the relay meets the preset disconnection condition.

[0054] Through the above technical means, the control device sends a third control command to the switch unit to control the reverse drive signal to be closed, increase the breaking force of the relay, thereby controlling the first contact to speed up the breaking speed, accelerate the arc extinction, and reduce the probability of adhesion.

[0055] In some embodiments, the current state of the relay satisfies the second preset condition, including: the power-off time of the relay is greater than the second time threshold; or the disconnection speed of the relay is greater than the second speed threshold.

[0056] Through the above technical means, the control device determines whether the power-off time or disconnection speed of the relay meets the second preset condition, thereby achieving a better control effect and reducing the probability of relay adhesion.

[0057] In some embodiments, the method further includes: when the first contact of the relay is stuck to the corresponding connection position and the sticking time exceeds a first preset time, controlling the first group of switches to be in an off state and the second group of switches to be in an on state to determine that a reverse drive signal is provided to the relay, and controlling the first contact of the relay to be disconnected from the connection position according to the reverse drive signal.

[0058] Through the above technical means, when the adhesion time exceeds the first preset time, the control device controls the drive unit to provide a reverse drive signal to the relay, thereby pulling apart the slightly adhered contacts and reducing the probability of relay adhesion failure.

[0059] In some embodiments, the method further includes: if the adhesion time of the relay exceeds a second preset time and it is detected that the first contact of the relay is not adhered to the corresponding connection position, sending a fourth control command to the adjustment unit; wherein the fourth control command is used to control the reverse drive signal to be turned off.

[0060] Through the above technical means, after the relay is stuck, a reverse drive signal is provided to the relay until a second preset time, so that the slightly stuck contacts are pulled apart within the response time, which can reduce the probability of relay sticking failure.

[0061] In a third aspect, an embodiment of the present application provides a control device, including:

[0062] a sending unit configured to send a driving command to the driving unit so that the driving unit provides a driving signal;

[0063] A determination unit configured to determine whether to provide a forward drive signal or a reverse drive signal to the relay according to the drive signal and the switch state in the switch unit;

[0064] The control unit is configured to control the action of the first contact of the relay to meet a preset closing condition according to a forward drive signal when the relay is in a closing process; or to control the action of the first contact of the relay to meet a preset breaking condition according to a reverse drive signal when the relay is in a breaking process.

[0065] In a fourth aspect, an embodiment of the present application provides a control device, including:

[0066] Memory for storing computer programs;

[0067] The processor is used to execute the steps of the drive control method as described in any one of the second aspects when executing the computer program stored in the memory.

[0068] In a fifth aspect, an embodiment of the present application provides a computer-readable storage medium, and when the computer program is executed by a processor, the steps of the drive control method described in the second aspect are implemented.

[0069] The present application provides a drive control circuit, method, control device and storage medium. The drive unit can provide a forward drive signal to the relay when the relay is in the closing process, so as to control the first contact to reduce the closing speed and reduce the closing impact force, thereby reducing the rebound time and reducing the probability of adhesion; the drive unit can also provide a reverse drive signal to the relay when the relay is in the disconnecting process, increase the disconnecting force of the relay, thereby controlling the first contact to speed up the disconnecting speed, speed up the arc extinction, and reduce the probability of adhesion; thereby improving the reliability of the relay. BRIEF DESCRIPTION OF THE DRAWINGS

[0070] Figure 1 It is a schematic diagram of the waveform change of the rated voltage of the relay coil during the closing and disconnecting process of the relay;

[0071] Figure 2 A schematic diagram of the structure of a drive control circuit provided in an embodiment of the present application Figure 1 ;

[0072] Figure 3 A schematic diagram of the structure of a drive control circuit provided in an embodiment of the present application Figure 2 ;

[0073] Figure 4 A schematic diagram of the structure of a drive control circuit provided in an embodiment of the present application Figure 3 ;

[0074] Figure 5 A schematic diagram of the structure of a drive control circuit provided in an embodiment of the present application Figure 4 ;

[0075] Figure 6 A schematic diagram of the structure of a relay system provided in an embodiment of the present application;

[0076] Figure 7 A schematic diagram of a driving control method provided in an embodiment of the present application Figure 1 ;

[0077] Figure 8 A schematic diagram of a driving control method provided in an embodiment of the present application Figure 2 ;

[0078] Fig. 9 A schematic diagram of a working process of a relay in a closing process provided in an embodiment of the present application;

[0079] Fig.10 A schematic diagram of the structure of a relay in a closing process provided in an embodiment of the present application;

[0080] Fig.11A schematic diagram of a working process of a relay in a disconnection process provided in an embodiment of the present application;

[0081] Fig.12 A schematic diagram of the structure of a relay in a disconnection process provided in an embodiment of the present application;

[0082] Fig.13 A schematic diagram of a working process of a relay in a sticking process provided in an embodiment of the present application;

[0083] Fig.14 A schematic diagram of the structure of a control device provided in an embodiment of the present application;

[0084] Fig.15 A schematic diagram of the hardware structure of a control device provided in an embodiment of the present application. DETAILED DESCRIPTION

[0085] In order to enable a more detailed understanding of the features and technical contents of the embodiments of the present application, the implementation of the embodiments of the present application is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the present application.

[0086] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein are only for the purpose of describing the embodiments of this application and are not intended to limit this application.

[0087] In the following description, reference is made to “some embodiments”, which describe a subset of all possible embodiments, but it will be understood that “some embodiments” may be the same subset or different subsets of all possible embodiments and may be combined with each other without conflict.

[0088] It should also be pointed out that the terms "first\second\third" involved in the embodiments of the present application are only used to distinguish similar objects and do not represent a specific ordering of the objects. It can be understood that "first\second\third" can be interchanged in a specific order or sequence where permitted, so that the embodiments of the present application described here can be implemented in an order other than that illustrated or described here.

[0089] High-voltage DC relay is a key safety device used in the field of new energy to provide isolation and control between Class A voltage and Class B voltage. The high-voltage relay in the prior art includes an electromagnetic system, a contact system, etc. The electromagnetic system includes various coils and iron cores. When the relay is closed, a certain voltage is applied to both ends of the coil, and a certain current will flow through the coil, thereby generating an electromagnetic effect. The moving contact will overcome the pulling force of the return spring under the action of electromagnetic attraction and be attracted to the iron core, thereby driving the moving contact and the static contact (normally open contact) to attract, so as to achieve the purpose of closing the relay. When the relay is disconnected, the coil is de-energized, and the electromagnetic attraction disappears. The moving contact will return to its original position under the reaction force of the spring, so that the moving contact is disconnected from the static contact (normally open contact) and attracted to the original static contact (normally closed contact), so as to achieve the purpose of disconnecting the relay. Closing and disconnecting in this way realizes the conduction and disconnection of the circuit.

[0090] At present, the adhesion between the moving contact and the static contact of the relay is the primary cause of relay failure. Among them, the rebound time, breaking speed and breaking force are important factors affecting the adhesion.

[0091] Bounce time is the main dynamic parameter of the relay. Due to the dynamic inertia of mechanical products, when the moving contact accelerates to the static contact, the two contacts first contact and form damping vibration, which will inevitably cause the dynamic contact to bounce back. The time of this process is called bounce time.

[0092] like Figure 1 As shown, T1 represents the action time, T2 represents the bounce time, T3 represents the reset / release time, and T4 represents the reset bounce time. Among them, the action time T1 is the time required for the relay to reach the working state from the start of coil energization to the time when all contacts reach the working state (excluding the bounce time), and the bounce time T2 is the time interval from the moment the contacts in the circuit are first closed to the moment when the contacts are finally closed. Since the bounce will inevitably produce an arc, and the gap of the bounce is usually very small, the arc is mainly concentrated in the "metal phase" arc. On the one hand, serious material melting and transfer occur, and on the other hand, the arc cleans the contact surface, thereby forming a "clean" metal surface. In this way, after the bounce is completed, the collision of the molten clean metal phase will easily cause contact adhesion.

[0093] During the relay disconnection process, if Figure 1As shown in the figure, the reset / release time T3 is the time required from the moment the coil relay starts to be de-energized to the moment when all contacts return to the released state. After the coil is de-energized and the electromagnetic drive signal is removed, the moving contact in the closed state is disconnected from the static contact. At this time, the dynamic contact may also bounce back. This process is called the reset bounce time T4. Among them, the reset bounce time T4 and the reset / release time T3 are the main factors affecting the breaking speed. If the relay has a slow breaking speed, the moment the trip coil responds to the power failure, due to the effect of electromagnetic induction, a momentary high potential will be caused in the coil. It will be superimposed on the two ends of the contact of the electrical components of the protection circuit (such as overcurrent relays, etc.) with the power supply voltage, causing an arc and causing the contact to stick. In addition, when the relay is in the breaking process, the reaction force of the spring, that is, the breaking force, pulls the moving contact and the static contact apart. If the contacts are slightly sticky at this time, and the breaking force is insufficient, it is easy to cause a permanent adhesion failure of the contacts.

[0094] Figure 1 The figure is a schematic diagram of the waveform change of the rated voltage of the relay coil during the relay closing and disconnecting process. Among them, waveform V1 represents the waveform change of the rated voltage of the relay coil as the relay coil is powered on and off; waveform V2 represents the waveform change of the rated voltage of the relay coil after the action rebound occurs when the relay is closed; waveform V3 represents the waveform change of the rated voltage of the relay coil after the reset rebound occurs when the relay is disconnected. Figure 1 In the relay, the relay receives the driving power-on signal and starts to energize the coil, causing the rated voltage of the coil to change from a low level (logic 0) to a high level (logic 1). When the rated voltage of the coil is at a low level, the contact is in the disconnected (OFF) state; when the rated voltage of the coil is at a high level, the contact is in the closed (ON) state.

[0095] Here, the level of waveform V1 flips from low level to high level, that is, the contact starts to close. The action time T1 is the time required for the relay to reach the working state from the start of coil power-on (excluding the bounce time). After the relay receives the drive power-down signal, it starts to de-energize the coil, so that the voltage of the coil changes from high level (logic 1) to low level (logic 0). At this time, the contact starts to break from the closed (ON) state. The reset / release time T3 is the time required from the start of coil power-off to the return of all contacts to the disconnected state. After T3 time, the contact is in the disconnected (OFF) state. In addition, the above-mentioned action bounce process is shown in waveform V2, and the above-mentioned reset bounce process is shown in waveform V3. During the action bounce and reset bounce processes, the voltage of the relay coil switches rapidly between the low level (logic 0) and the high level (logic 1) many times.

[0096] In the related technology, the bounce time is determined by factors such as the relay contact material and driving power, and the breaking speed and breaking force are determined by the K value of the relay return spring. However, the contact material, driving power and K value of the return spring are difficult to modify, so it is difficult to improve the relay adhesion.

[0097] Based on the above technical problems, an embodiment of the present application provides a drive control circuit, which can provide a forward drive signal to the relay when the relay is in the closing process, and can control the forward drive signal to decrease, so as to reduce the closing impact force of the relay when it is closed; when the relay is in the disconnecting process, a reverse drive signal is provided to the relay, so as to increase the contact disconnecting speed of the relay; and when the relay is stuck, the reverse drive signal can also be controlled to increase, so as to pull apart the slightly stuck contacts and reduce the probability of adhesion failure.

[0098] The present application is further described in detail below through the accompanying drawings and specific embodiments.

[0099] In one embodiment of the present application, Figure 2 A schematic diagram of the structure of a drive control circuit 10 provided in an embodiment of the present application Figure 1 .like Figure 2 As shown, the drive control circuit 10 may include a drive unit 101 , a switch unit 102 and a relay 103 , wherein the switch unit 102 is connected between the drive unit 101 and the relay 103 .

[0100] The driving unit 101 is used to provide a driving signal.

[0101] It should be noted that, in the embodiment of the present application, the driving unit 101 may be an external power supply or other power supply circuit, which can provide a driving signal to the relay 103. Here, the driving signal may be a current signal, a voltage signal, or even a power signal, which is not specifically limited here.

[0102] The switch unit 102 is used to provide a forward drive signal or a reverse drive signal to the relay 103 according to the drive signal and the switch state in the switch unit 102 .

[0103] It should also be noted that, in the embodiment of the present application, the switch unit 102 may include a plurality of switches, and each switch may be in an open or closed state.

[0104] The relay 103 generally includes a group of moving and static contacts, and an iron core surrounding the coil. It can be understood that when currents or voltages in different directions are passed through the coil, different magnetic forces will be generated in the iron core. When the moving and static contacts of the relay 103 are in the process of disconnection or closing, the magnetic forces formed by the currents or voltages in different directions will have different effects on the movement of the moving and static contacts. In an embodiment of the present application, the forward drive signal can be a voltage or current that promotes the attraction of the moving and static contacts, which is provided when the relay 103 is in the process of closing, and the magnetic force generated can reduce the bounce time of the moving contact; the reverse drive signal can be a voltage or current that promotes the disconnection of the moving and static contacts, which is provided when the relay 103 is in the process of disconnection, and the magnetic force generated can reduce the probability of adhesion of the moving and static contacts.

[0105] In the embodiment of the present application, the opening and closing conditions of all switches in the switch unit 102 at a certain moment are referred to as the switch state of the switch unit 102. It can be understood that since the drive unit 101 may be a power source that cannot adjust the direction of the drive signal, the switch unit 102 is set between the drive unit 101 and the relay 103, and different switch states can adjust the direction of the drive signal output by the drive unit 101. Exemplarily, it can be preset that when the switch state is a certain state, the drive signal provided by the drive unit 101 to the relay 103 is adjusted to a forward drive signal; when the switch state is another state, it can be preset that the drive signal provided by the drive unit 101 to the relay 103 is adjusted to a reverse drive signal.

[0106] The relay 103 is used to control the action of the first contact of the relay 103 to meet a preset closing condition according to the forward driving signal when the relay 103 is in the closing process.

[0107] It should also be noted that, in the embodiment of the present application, the preset closing condition is the goal achieved by the driving unit 101 providing a positive driving signal to the relay 103. The closing speed of the first contact can be used as the judgment threshold, the bounce time of the first contact can be used as the judgment threshold, and other conditions that the first contact needs to meet in the closing action can also be used as the judgment threshold, such as the closing impact force, etc. For example, if the bounce time is used as the judgment threshold, it can be expressed as follows: if the bounce time of the first contact is less than the preset bounce time, the action of the first contact meets the preset closing condition.

[0108] In the embodiment of the present application, the relay 103 may be a high-voltage DC relay, which may be used as a control element of an electrical circuit. It is a switching device that uses a low current to control a high current and may act as a protective device in the circuit. In addition, the relay 103 may generally include an iron core, a coil surrounding the iron core, a moving contact, and a stationary contact. When the moving contact is connected to the stationary contact, it indicates that the relay 103 is completely closed; when the moving contact is disconnected from the stationary contact, it indicates that the relay 103 is completely disconnected. Here, the first contact may also be referred to as a moving contact.

[0109] In an embodiment of the present application, when the relay 103 is in the closing process, the relay 103 receives a driving power-on signal sent by the control device of the circuit, thereby energizing the coil. Among them, the control device can be a controller, a microcontroller unit (MCU), etc. After the coil of the relay 103 is energized, the coil and the iron core together form an electromagnet, which attracts the moving contact to move toward the iron core and contact the static contact on the iron core to complete the closing of the relay 103. The positive drive signal can be a current signal in the same direction as the coil energization current of the relay 103, or a voltage signal in the same direction as the coil energization voltage of the relay 103.

[0110] In this way, if the size of the forward driving signal provided by relay 103 is controlled during the closing process of relay 103, then the size of the electromagnetic attraction of the electromagnet formed by the coil and the iron core to the moving contact can be controlled, thereby controlling the closing speed of the first contact, so that the action of the first contact of relay 103 meets the preset closing conditions, and the effect achieved is that the closing speed of the first contact is reduced, the closing impact force is reduced, and the rebound time is reduced.

[0111] Alternatively, when the relay 103 is in the disconnecting process, the action of the first contact of the relay 103 is controlled according to the reverse driving signal to meet the preset disconnecting condition.

[0112] It should also be noted that, in the embodiment of the present application, the preset disconnection condition can be the goal achieved by the drive unit 101 providing a reverse drive signal to the relay 103, the disconnection speed of the first contact can be used as the judgment threshold, the reset bounce time of the first contact can be used as the judgment threshold, and other conditions that the first contact needs to meet in the disconnection action can also be used as the judgment threshold. For example, if the reset bounce time is used as the judgment threshold, it can be expressed as follows: if the reset bounce time of the first contact is less than the preset reset bounce time, the action of the first contact meets the preset disconnection condition.

[0113] In the embodiment of the present application, when the relay 103 is in the disconnection process, the relay 103 receives a driving electric signal sent by the circuit control device and cuts off the power to the coil. After the coil of the relay 103 is de-energized, the electromagnetic magnetic force of the coil and the core gradually disappears, and the attraction to the moving contact is reduced, so that the moving contact returns to its original position, and the relay is disconnected.

[0114] In this way, the reverse drive signal can be a current signal that is opposite to the current of the coil of the relay 103, or a voltage signal that is opposite to the voltage of the coil of the relay 103. It can be understood that if a reverse drive signal is provided to the relay 103 during the disconnection process of the relay 103, then the coil and the iron core of the relay 103 can be controlled to form an electromagnetic force that repels the moving contact, thereby controlling the disconnection speed of the first contact, so that the action of the first contact of the relay 103 meets the preset disconnection condition, and the effect achieved is that the disconnection speed of the first contact is accelerated, the arc extinguishing speed generated during disconnection is accelerated, and the reset bounce time is reduced. It should be noted that in the embodiment of the present application, the reverse drive signal can also be called a negative drive signal.

[0115] Through the above technical means, when the relay is in the closing process, a forward drive signal is provided to the relay, and when the relay is in the disconnecting process, a reverse drive signal is provided to the relay. In this way, the bounce time of the contact during the closing process is reduced, and the breaking force of the contact during the disconnecting process is increased, the breaking speed is improved, and the probability of adhesion failure of the relay is reduced.

[0116] In another embodiment of the present application, Figure 2 Based on the driving control circuit 10 shown, see Figure 3 , the switch unit 102 may include a first group of switches 1021 and a second group of switches 1022, wherein:

[0117] The switch unit 102 is used to provide a positive driving signal to the relay 103 according to the driving signal when the first set of switches 1021 is in the on state and the second set of switches 1022 is in the off state.

[0118] In the embodiments of the present application, Figure 3 As shown, the first group of switches 1021 may include K1 and K2, and the second group of switches 1022 may include K3 and K4.

[0119] In the embodiment of the present application, when the relay 103 is in the closing process, K1 and K2 in the first group of switches 1021 are closed, that is, the first group of switches 1021 is in the on state, and K3 and K4 in the second group of switches 1022 are opened, that is, the second group of switches 1022 is in the off state, forming a switching state of the switch unit 102, so that the positive and negative poles of the drive unit 101 are forwardly connected to the relay 103 at this time, and the drive signal provided by the drive unit 101 to the relay 103 is a forward drive signal.

[0120] Alternatively, the switch unit 102 is used to provide a reverse drive signal to the relay 103 according to the drive signal when the first set of switches 1021 is in an off state and the second set of switches 1022 is in an on state.

[0121] In the embodiment of the present application, when the relay 103 is in the disconnecting process, K1 and K2 in the first group of switches 1021 are opened, that is, the first group of switches 1021 is in the disconnected state, and K3 and K4 in the second group of switches 1022 are closed, that is, the second group of switches 1022 is in the on state, forming another switching state of the switch unit 102, so that the positive and negative poles of the drive unit 101 are reversely connected to the relay 103 at this time, and the drive signal from the drive unit 101 to the relay 103 is adjusted to a reverse drive signal.

[0122] Through the above technical means, by controlling the conduction or disconnection of the first group of switches and the second group of switches, the effect of controlling the provision of a forward drive signal or a reverse drive signal to the relay is achieved, and the multiplexing of the circuit is improved.

[0123] In another embodiment of the present application, based on the drive control circuit 10 described in the aforementioned embodiment, an adjustment unit 104 may be further included here for adjusting the size of the forward drive signal or the reverse drive signal so as to better control the working state of the relay 103 during the closing process or the disconnecting process.

[0124] In some embodiments, Figure 2 Based on the driving control circuit 10 shown, see Figure 4 The driving control circuit 10 further includes an adjustment unit 104, which is connected to the output end of the driving unit 101, wherein:

[0125] The adjustment unit 104 is used to receive a control command according to the current state of the relay 103, and adjust the magnitude of the forward drive signal or the reverse drive signal according to the control command.

[0126] In the embodiment of the present application, the adjustment unit 104 may be a single board or a module, on which are disposed devices or circuits capable of adjusting the magnitude of the current signal or the voltage signal output by the driving unit 101 .

[0127] In the embodiment of the present application, the current state of the relay 103 may be a state of entering a closing process, or a state of entering a breaking process. The adjustment unit 104 is a unit controlled by a control device, and the control device may send a control command to the adjustment unit 104 according to the current state of the relay 103. Exemplarily, if the relay 103 is currently in a state of entering a closing process, the control command of the control device is used to control the adjustment unit 104 so that the adjustment unit 104 adjusts the size of the forward drive signal; if the relay 103 is currently in a state of entering a breaking process, the control command of the control device is used to control the adjustment unit 104 so that the adjustment unit 104 adjusts the size of the reverse drive signal.

[0128] It should also be noted that if Figure 4 As shown, since the current or voltage output by the driving unit 101 is constant, one connection method of the adjustment unit 104 is that it can be set at the output end of the driving unit 101, that is, between the driving unit 101 and the switch unit 102, to adjust the size of the forward driving signal or the reverse driving signal output by the driving unit 101. The specific adjustment amplitude and frequency can be set according to actual needs and are not specifically limited here.

[0129] Through the above technical means, according to the current state of the relay, such as how long the power-on time is, how fast the closing speed is, etc., the control command is received to control the adjustment unit to adjust the size of the drive signal, thereby achieving better control effect and reducing the probability of relay adhesion.

[0130] In some embodiments, Figure 2 Based on the driving control circuit 10 shown, see Figure 5 , the relay 103 includes an adjustment unit 104, and the adjustment unit 104 is connected to the output end of the switch unit 102, wherein:

[0131] The adjustment unit 104 is used to receive a control command according to the current state of the relay 103, and adjust the magnitude of the forward drive signal or the reverse drive signal according to the control command.

[0132] It should be noted that if Figure 5 As shown, the adjustment unit 104 may also be integrated in the relay 103. For example, if the relay 103 includes a circuit board, the circuit of the adjustment unit 104 may be integrated on the circuit board.

[0133] It should also be noted that since the current or voltage output by the driving unit 101 is constant, in order to adjust the constant current or voltage before it is input into the relay 103, another connection method of the adjustment unit 104 is that it can be set at the input end inside the relay 103, and the relay 103 sends a control command to the adjustment unit 104 according to the current state of the relay 103, or the control device sends a control command to the adjustment unit 104 in the relay 103, and controls the adjustment unit 104 to adjust the size of the forward drive signal or the reverse drive signal, and the specific adjustment amplitude and frequency are determined according to the control command.

[0134] Through the above-mentioned technical means, according to the current state of the relay, such as how long the power-on time is, how fast the closing speed is, etc., the control device sends a control command to control the adjustment unit to adjust the size of the drive signal, thereby achieving a better control effect and reducing the probability of relay sticking.

[0135] In some embodiments, when the relay 103 is in the closing process, based on Figure 4 or Figure 5 In the drive control circuit 10 shown, if the current state of the relay 103 meets the first preset condition, the adjustment unit 104 is used to receive a first control command and control the forward drive signal to decrease according to the first control command so that the action of the first contact of the relay 103 meets the preset closing condition.

[0136] As in the aforementioned embodiment, the effects achieved by the preset closing condition are that the closing speed of the first contact is reduced, the closing impact force is reduced, and the rebound time is shortened.

[0137] When the relay 103 enters the closing process, the coil is energized, and the coil and the iron core together form an electromagnet, which attracts the moving contact to move toward the iron core and contacts the static contact on the iron core to complete the circuit closure. In order to make the action of the first contact of the relay 103 meet the preset closing condition and achieve the above effect, when the relay 103 enters the closing process, when the current state of the relay 103 meets the first preset condition, the control device or the relay 103 sends a first control command to the adjustment unit 104 to control the adjustment unit 104 to adjust the forward drive signal output by the drive unit 101 so that the forward drive signal gradually decreases. The frequency and amplitude of the reduction can be determined according to the first control command, and the step of reducing the forward drive signal can be 1 or more times, and the amplitude can be different each time to achieve the best effect. Exemplarily, the adjustment amplitude can be less than 100 mA each time until it is adjusted to 100 mA or 50 mA and no longer reduced.

[0138] In this way, as the moving contact gradually approaches the stationary contact, the positive drive signal gradually decreases, the electromagnetic force of the relay 103 gradually decreases, and the electromagnetic attraction to the positive drive signal also gradually decreases. However, since the distance between the moving contact and the stationary contact becomes closer, the electromagnetic attraction of the relay 103 is still greater than the reaction force of the spring of the moving contact. In this way, the closing speed of the moving contact and the stationary contact is slowed down and the closing impact force is reduced.

[0139] In a possible implementation, the current state of the relay 103 satisfies the first preset condition, which may include: the power-on time of the relay 103 is greater than a first time threshold.

[0140] The first time threshold can be determined according to a first preset ratio of the action time, wherein the first preset ratio can be 60% to 70%. According to the above embodiment, the action time is the time required for the relay 103 to reach the working state from the start of coil energization.

[0141] When the power-on time of relay 103 is greater than the first time threshold, it means that the bounce time is too long during the closing process of relay 103, then it is determined that the current state of relay 103 meets the first preset condition, and the control device or relay 103 sends a first control command to the adjustment unit 104, which controls the adjustment unit 104 to adjust the forward drive signal output by the drive unit 101 to a gradually decreasing forward drive signal, so that the bounce time of relay 103 is reduced.

[0142] In another possible implementation, the current state of the relay 103 satisfies the first preset condition, which may include: a closing speed of the relay 103 is greater than a first speed threshold.

[0143] A speed sensor may also be arranged near the first contact of the relay 103 to detect the closing speed of the first contact.

[0144] After the relay 103 enters the closing process, the closing speed of the first contact can be continuously obtained. If the closing speed of the first contact is greater than the first speed threshold, it means that the closing speed of the first contact of the relay 103 is too fast when it is closed, then it is determined that the current state of the relay 103 meets the first preset condition, and the control device or the relay 103 sends a first control command to the adjustment unit 104, which controls the adjustment unit 104 to adjust the forward drive signal output by the drive unit 101 to a gradually decreasing forward drive signal, so that the closing speed of the relay 103 is slowed down.

[0145] Alternatively, it can be understood that the embodiment of the present application can also set other judgment thresholds to determine whether the first preset condition is met during the closing process of the relay 103, which is not limited here.

[0146] Through the above-mentioned technical means, when the power-on time of the relay is greater than the first time threshold, or the closing speed of the relay is greater than the first speed threshold, the adjustment unit controls the driving unit to output a reduced positive driving signal to the relay, controls the first contact to reduce the closing speed and reduce the closing impact force, thereby reducing the rebound time and reducing the probability of adhesion.

[0147] In some embodiments, when the relay 103 is in the disconnection process, based on Figure 4 or Figure 5 In the drive control circuit 10 shown, if the current state of the relay 103 meets the second preset condition, the adjustment unit 104 is used to receive the second control command and control the reverse drive signal to decrease according to the second control command so that the action of the first contact of the relay 103 meets the preset disconnection condition.

[0148] As in the above-mentioned embodiment, the effect achieved by the preset breaking condition is to accelerate the breaking speed of the first contact, accelerate the extinguishing speed of the arc generated during the breaking, and reduce the reset bounce time.

[0149] When the relay 103 enters the disconnection process, the coil of the relay 103 is powered off, the electromagnetic magnetic force of the coil and the core gradually disappears, the attraction to the moving contact is reduced, the moving contact returns to its original position, and the relay is disconnected. In order to make the action of the first contact of the relay 103 meet the preset disconnection condition and achieve the above effect, when the relay 103 enters the disconnection process, when the current state of the relay 103 meets the second preset condition, the control device or the relay 103 sends a second control command to the adjustment unit 104 to control the adjustment unit 104 to adjust the reverse drive signal output by the drive unit 101 so that the reverse drive signal gradually decreases. The frequency and amplitude of the reduction are determined according to the second control command, and the step of reducing the reverse drive signal can be 1 or more times, and the amplitude can be different each time to achieve the best effect. Exemplarily, the adjustment amplitude can be less than 100 mA each time until it is adjusted to 100 mA or 50 mA and no longer reduced.

[0150] In this way, as the electromagnetic attraction disappears after the coil of the relay 103 is powered off, the moving contact gradually moves away from the static contact. At this time, a reverse drive signal is provided to the relay 103, so that the action of the first contact of the relay 103 can meet the preset disconnection condition, which has the effect of accelerating the disconnection speed and accelerating the extinguishing speed of the arc generated during disconnection. After the current state of the relay 103 meets the second preset condition, the reverse drive signal provided is gradually reduced to further ensure that the action of the first contact of the relay 103 meets the preset disconnection condition.

[0151] Through the above technical means, the adjustment unit can control the reverse drive signal to decrease according to the second control command, so that the action of the first contact of the relay meets the preset breaking condition, thereby accelerating the breaking speed, accelerating the arc extinction, and reducing the probability of adhesion.

[0152] In some embodiments, when the relay 103 is in the disconnection process, based on Figure 4 or Figure 5 In the drive control circuit 10 shown, if the current state of the relay 103 meets the second preset condition, the adjustment unit 104 is also used to receive a third control command and control the reverse drive signal to be closed according to the third control command so that the action of the first contact of the relay 103 meets the preset disconnection condition.

[0153] It should be noted that when the relay 103 enters the disconnection process, the coil of the relay 103 is de-energized, the electromagnetic magnetic force of the coil and the core gradually disappears, the attraction of the static contact to the moving contact is reduced, the moving contact returns to its original position, and the circuit is disconnected. In order to make the action of the first contact of the relay 103 meet the preset disconnection condition and achieve the above effect, when the relay 103 enters the disconnection process, when the current state of the relay 103 meets the second preset condition, the control device or the relay 103 can send a third control command to the adjustment unit 104 to control the adjustment unit 104 to turn off the reverse drive signal input to the relay 103 by the drive unit 101. In addition, in the embodiment of the present application, the control device can also send a control command to the switch unit 102, and by controlling the switch in the switch unit 102 to be disconnected, the reverse drive signal input to the relay 103 by the drive unit 101 is turned off, so that the action of the first contact of the relay 103 meets the preset disconnection condition.

[0154] It should also be noted that, in the above embodiment, the current state of the relay 103 satisfies the second preset condition, which may include: the power-off time of the relay 103 is greater than the second time threshold.

[0155] The second time threshold can be determined according to a second preset ratio of the reset / release time, wherein the second preset ratio can be 20% to 30%. According to the above embodiment, the reset / release time is the time required from the coil being de-energized to all contacts returning to the disconnected state.

[0156] After the relay 103 starts to be powered off, until the power-off time of the relay 103 is greater than the second time threshold, the driving unit 101 has been providing the reverse drive signal to the relay 103 according to the control of the adjustment unit 104 to accelerate the disconnection process. When the power-off time of the relay 103 is greater than the second time threshold, the maximum time of the disconnection response has been reached. If the contacts of the relay 103 are not adhered, the disconnection has been completed under the action of the reverse drive signal; if the contacts of the relay 103 are adhered, continuing to provide the reverse drive signal will also cause the response timeout, then the second control command is received, and the reverse drive signal is controlled to decrease according to the second control command, or the third control command is received, and the reverse drive signal is controlled to be turned off according to the third control command.

[0157] In another possible implementation, the current state of the relay 103 satisfies the second preset condition, which may include: the disconnection speed of the relay 103 is greater than a second speed threshold.

[0158] When the relay 103 enters the disconnecting process, the disconnecting speed of the first contact can be continuously obtained through the set speed sensor. If the disconnecting speed of the first contact is greater than the second speed threshold, it means that the first contact of the relay 103 has completed the disconnecting process, and it is determined that the current state of the relay 103 meets the second preset condition, then the second control command is received, and the reverse drive signal is controlled to decrease according to the second control command, or the third control command is received, and the reverse drive signal is controlled to be turned off according to the third control command.

[0159] Alternatively, it can be understood that other judgment thresholds can be set in the embodiment of the present application to judge whether the second preset condition is met during the disconnection process of the relay 103, which is not limited here.

[0160] Through the above-mentioned technical means, a reverse drive signal is provided to the relay when the relay is turned off, and when the power-off time of the relay is greater than the second time threshold, or the breaking speed of the relay is greater than the second speed threshold, the reverse drive signal is controlled to be reduced or turned off, thereby increasing the breaking force of the relay, thereby controlling the first contact to speed up the breaking speed, speed up the arc extinction, and reduce the probability of adhesion.

[0161] In some embodiments, when the relay 103 is in a sticking process, the relay 103 is also used to control the first contact of the relay 103 to be separated from the connection position according to a reverse drive signal when the first contact of the relay 103 sticks to the corresponding connection position and the sticking time exceeds a first preset time.

[0162] It should be noted that, in the embodiment of the present application, the first preset time can be preset, and illustratively, the first preset time can be 100 milliseconds. In addition, adhesion can refer to the static contact and the moving contact of the relay 103 being melted and welded together, and thus cannot be normally controlled to disconnect.

[0163] It can be understood that when the control device detects or receives a sticking signal transmitted by other devices, the time when the sticking occurs is counted. When the sticking time is greater than the first preset time, the drive unit 101 and the switch unit 102 are controlled to provide a continuous reverse drive signal to the relay 103, and continue to detect the sticking position until the first contact position is no longer stuck. Among them, the size of the reverse drive signal can be preset or adjusted multiple times in real time, and the number of times the reverse drive signal is provided can also be 1 or more times, and its upper limit can be set to the limit of the temperature rise of the relay 103 coil.

[0164] When the reverse driving signal is provided to the relay 103 , the state of the switch unit 102 may be the same as the state of the switch unit 102 when the reverse driving signal is provided to cause the relay 103 to disconnect.

[0165] In some embodiments, when the adhesion time of the relay 103 exceeds the second preset time and it is detected that the first contact of the relay 103 is not adhered to the corresponding connection position, the adjustment unit 104 is also used to receive a fourth control command and control the reverse drive signal to be turned off according to the fourth control command.

[0166] It should also be noted that, in the embodiment of the present application, the second preset time can be set according to the user's tolerance of the adhesion response, and no specific limitation is made here.

[0167] When the first contact position of the relay 103 is stuck, the driving unit 101 can provide a reverse driving signal to the relay 103 until the second preset time, and the control device can continuously detect the position of the first contact to determine whether the stuck position is disconnected.

[0168] If the position of the first contact is no longer adhered, the control device may control the adjustment unit 104 to adjust the reverse drive signal to off by sending a fourth control command to the adjustment unit 104. Alternatively, the control device may also control the switch unit 102 to turn off the reverse drive signal transmitted by the drive unit 101 to the relay 103.

[0169] Furthermore, in some embodiments, the relay 103 is further configured to send a sticking alarm signal when the sticking time of the relay 103 exceeds a second preset time and it is detected that the first contact of the relay 103 is stuck to the corresponding connection position.

[0170] It should also be noted that after continuously providing a reverse drive signal to relay 103 until the second preset time has expired, the first contact of relay 103 is still in a sticking state. At this time, the upper limit of the response that the user can bear has been reached. Continuing to provide a reverse drive signal to relay 103 may not be able to pull the sticking position apart. In this case, a sticking alarm signal can be sent to the control device to enable the control device to control other devices to initiate a sticking alarm. At the same time, the reverse drive signal to relay 103 can also be stopped.

[0171] Through the above-mentioned technical means, after the relay becomes stuck, a reverse drive signal is provided to the relay until the second preset time, thereby pulling apart the slightly stuck contacts and reducing the probability of relay sticking failure. Alternatively, when the sticking position is still not pulled apart after the second preset time, an alarm is sent to the user in a timely manner.

[0172] In yet another embodiment of the present application, Figure 6 Schematic diagram of the structure of a relay system 60 provided in an embodiment of the present application. Figure 6 As shown, the relay system 60 may include the drive control circuit 10 and the control device 105 in the aforementioned embodiment, wherein the control device 105 is connected to the drive unit 101 and the switch unit 102 respectively.

[0173] It can be understood that in some embodiments, the control device 105 can also be connected to the adjustment unit to send a control command to the adjustment unit, such as a first control command, a second control command, a third control command, a fourth control command, etc.

[0174] It should also be noted that in the embodiment of the present application, the control device 105 can be a controller, MCU, etc., which can be used to control the drive unit 101, the switch unit 102, the adjustment unit, etc., so that the relay 103 gradually reduces the drive current during the closing process, so as to reduce the contact closing speed, reduce the closing impact force, and ultimately reduce the bounce time and the probability of adhesion; the relay 103 provides a reverse drive signal during the disconnection process to increase the disconnecting force, speed up the contact disconnection speed, and speed up the arc extinction, thereby reducing the arc energy of the relay during disconnection / closing and increasing the disconnecting force; even when the relay 103 is stuck, a larger reverse drive signal is provided to increase the relay breaking force, pull the sticking position apart, and eliminate the sticking fault.

[0175] In yet another embodiment of the present application, Figure 7 A schematic diagram of a driving control method provided in an embodiment of the present application Figure 1 This method can be applied to the control device 105 shown in the above embodiment. Figure 7 As shown, the method may include:

[0176] S701: Send a driving command to a driving unit so that the driving unit provides a driving signal.

[0177] S702, determining whether to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit.

[0178] It should be noted that in the embodiment of the present application, the control device can send a drive command to the drive unit when the relay is in the closing process or in the disconnecting process, and control the drive unit to open so that the drive unit starts working and provides a continuous drive signal to the relay.

[0179] It should also be noted that, in the embodiment of the present application, the on-off status of all switches in the switch unit at a certain moment is referred to as the switch state in the switch unit. When the relay is in the closing process, the control device can control the switch state in the switch unit to a certain state, so that the drive signal provided by the drive unit to the relay is adjusted to a forward drive signal; when the relay is in the disconnecting process, the control device can control the switch state in the switch unit to another state, so that the drive signal provided by the drive unit to the relay is adjusted to a reverse drive signal.

[0180] S703, when the relay is in the closing process, the action of the first contact of the relay is controlled according to the forward drive signal to meet the preset closing condition; or, when the relay is in the disconnecting process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnecting condition.

[0181] It should also be noted that in the embodiment of the present application, when the relay is in the closing process, the control device can send a drive power-on signal to the relay to energize the coil. Then, the coil and the iron core together form an electromagnet, which attracts the moving contact to move toward the iron core and contact the static contact on the iron core to complete the relay closure. In this process, the control device can control the size of the positive drive signal provided by the drive unit to the relay to control the size of the electromagnetic attraction of the electromagnet formed by the coil and the iron core to the moving contact, thereby controlling the closing speed of the first contact, so that the action of the first contact of the relay meets the preset closing condition.

[0182] It should also be noted that in the embodiment of the present application, when the relay is in the disconnection process, the control device can send a driving power signal to the relay to cut off the power to the coil. Then, the electromagnetic magnetic force shared by the coil and the iron core gradually disappears, and the attraction to the moving contact is reduced, so that the moving contact returns to its original position and the relay is disconnected. In this process, the control device can control the size of the reverse drive signal provided to the relay to control the coil and the iron core of the relay to form an electromagnetic force that repels the moving contact, thereby controlling the disconnection speed of the first contact, so that the action of the first contact of the relay meets the preset disconnection conditions.

[0183] In this way, when the relay is in the closing process, the control device can control the drive unit and the switch unit to provide a forward drive signal to the relay; when the relay is in the disconnecting process, the control device can control the drive unit and the switch unit to provide a reverse drive signal to the relay. In this way, the bounce time of the contact during the closing process is reduced, and the breaking force of the contact during the disconnecting process is increased, the breaking speed is improved, and the probability of adhesion failure of the relay is reduced.

[0184] Further, in the embodiment of the present application, the switch unit may include a first group of switches and a second group of switches. Figure 8 , the method may further include:

[0185] S801, sending a first switch command and a second switch command to a switch unit.

[0186] S802: Determine a switch state in a switch unit according to the first switch command and the second switch command.

[0187] It should be noted that, in the embodiment of the present application, the switch unit may be a controlled unit and may be controlled by a control device. The first switch command is used to control the first group of switches to be in an on or off state, and the second switch command is used to control the second group of switches to be in an on or off state. Exemplarily, the first group of switches may include K1 and K2, and the second group of switches may include K3 and K4.

[0188] In this way, the control device determines the switch state in the switch unit by sending the first switch command and the second switch command to the switch unit, combining the state of the first group of switches and the state of the second group of switches.

[0189] Specifically, the control device can send corresponding commands to the switch unit according to the state of the relay, so that the switch unit reaches the required switch state. For example, if the relay is currently in the closing process state, the first switch command can be sent to the first group of switches to make the first group of switches K1 and K2 in the on state, and the second switch command can be sent to the second group of switches to make the second group of switches K3 and K4 in the off state, forming a switch state of the switch unit; if the relay is currently in the disconnecting process state, the first switch instruction can be sent to the first group of switches to make the first group of switches K1 and K2 in the off state, and the second switch instruction can be sent to the second group of switches to make the second group of switches K3 and K4 in the on state, forming another switch state of the switch unit.

[0190] Furthermore, in the above step S702, determining whether to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit may include:

[0191] When the first set of switches is in the on state and the second set of switches is in the off state, a forward drive signal is determined to provide a drive signal to the relay; or, when the first set of switches is in the off state and the second set of switches is in the on state, a reverse drive signal is determined to provide a drive signal to the relay.

[0192] As in the aforementioned embodiment, when the first group of switches K1 and K2 are in the on state and the second group of switches K3 and K4 are in the off state, a switching state of the switch unit is formed, so that the positive and negative poles of the drive unit are forwardly connected to the relay at this time, and the drive signal provided by the drive unit to the relay is a forward drive signal; when the first group of switches K1 and K2 are in the off state and the second group of switches K3 and K4 are in the on state, another switching state of the switch unit is formed, so that the positive and negative poles of the drive unit are reversely connected to the relay at this time, and the drive signal from the drive unit to the relay is adjusted to a reverse drive signal.

[0193] Through the above-mentioned technical means, the control device sends a first switch instruction to the first group of switches and a second switch instruction to the second group of switches, thereby controlling the switching state of the switch unit, thereby achieving the effect of controlling the provision of a forward drive signal or a reverse drive signal to the relay and improving the multiplexing of the circuit.

[0194] In some embodiments, in the above step S703, when the relay is in the closing process, controlling the action of the first contact of the relay according to the forward drive signal to meet the preset closing condition may include: if the current state of the relay meets the first preset condition, sending a first control command to the adjustment unit; wherein the first control command is used to control the forward drive signal to decrease so that the action of the first contact of the relay meets the preset closing condition.

[0195] It can be understood that the current state of the relay may be a state of entering a closing process, or a state of entering a breaking process. The control device may send a first control command to the adjustment unit according to the current state of the relay.

[0196] It should also be noted that the first control command is used to control the adjustment unit so that the adjustment unit adjusts the magnitude of the forward driving signal, and the specific adjustment amplitude and frequency are determined according to the control command.

[0197] In some embodiments, the current state of the relay satisfies the first preset condition, which may include: the power-on time of the relay is greater than the first time threshold; or the closing speed of the relay is greater than the first speed threshold.

[0198] The description of the first preset condition has been described in detail in the above embodiment and will not be repeated here.

[0199] Through the above-mentioned technical means, the control device sends a first control command to the adjustment unit to control the adjustment unit to adjust the forward drive signal. The number of times the forward drive signal is adjusted can be 1 time or more, and the amplitude can be different each time, thereby achieving better control effect during the relay closing process and reducing the probability of relay sticking.

[0200] In some embodiments, in step S703 of the aforementioned embodiment, when the relay is in the disconnecting process, controlling the action of the first contact of the relay according to the reverse drive signal to meet the preset disconnecting condition may include: if the current state of the relay meets the second preset condition, sending a second control command to the adjustment unit; wherein the second control command is used to control the reverse drive signal to decrease so that the action of the first contact of the relay meets the preset disconnecting condition.

[0201] When the relay enters the disconnection process, the control device judges the current state of the relay. If the current state of the relay meets the second preset condition, the control device sends a second control command to the adjustment unit to control the adjustment unit to adjust the reverse drive signal output by the drive unit so that the reverse drive signal gradually decreases, thereby making the action of the first contact of the relay meet the preset disconnection condition. The frequency and amplitude of the reduction are determined according to the second control command.

[0202] Through the above technical means, the control device sends a second control command to the adjustment unit to control the reverse drive signal to decrease, so that the action of the first contact of the relay meets the preset breaking condition, thereby accelerating the breaking speed, accelerating the arc extinction, and reducing the probability of adhesion.

[0203] In some embodiments, in the above step S703, when the relay is in the disconnection process, controlling the action of the first contact of the relay according to the reverse drive signal to meet the preset disconnection condition may include: if the current state of the relay meets the second preset condition, sending a third control command to the adjustment unit; wherein the third control command is used to control the reverse drive signal to turn off so that the action of the first contact of the relay meets the preset disconnection condition.

[0204] When the relay enters the disconnecting process, when the current state of the relay meets the second preset condition, the control device can send a third control command to the switch unit to directly control the switch unit to turn off the reverse drive signal input from the drive unit to the relay.

[0205] Among them, the third control command is used to control the reverse drive signal to decrease, and the step of reducing the reverse drive signal can be one or more times, and the amplitude can be different each time, so as to achieve a better control effect during the relay disconnection process.

[0206] In some embodiments, the current state of the relay satisfies the second preset condition, which may include: the power-off time of the relay is greater than the second time threshold; or the disconnection speed of the relay is greater than the second speed threshold.

[0207] The description of the second preset condition has been described in detail in the above embodiment and will not be repeated here.

[0208] Through the above-mentioned technical means, the control device can increase the breaking force of the relay by sending the second control command or the third control command to the adjustment unit to provide a reverse drive signal to the relay, thereby controlling the first contact to speed up the breaking speed, accelerate the arc extinction, and reduce the probability of adhesion.

[0209] In some embodiments, the method may further include: when the first contact of the relay is stuck to the corresponding connection position and the sticking time exceeds a first preset time, controlling the first group of switches to be in an off state and the second group of switches to be in an on state to determine that a reverse drive signal is provided to the relay, and controlling the first contact of the relay to be disconnected from the connection position according to the reverse drive signal.

[0210] It should be noted that when the control device detects or receives a sticking signal transmitted by other devices, it counts the time when the sticking occurs. When the sticking time is greater than the first preset time, it sends a first switch command to the first group of switches of the switch unit to control the first group of switches to be in an off state, and sends a second switch command to the second group of switches of the switch unit to control the second group of switches to be in an on state, provides a continuous reverse drive signal to the relay, and continues to detect the sticking position until the first contact position is no longer stuck. The number of times the reverse drive signal is provided can be 1 or more.

[0211] In some embodiments, the method may further include: if the adhesion time of the relay exceeds a second preset time and it is detected that the first contact of the relay is not adhered to the corresponding connection position, sending a fourth control command to the adjustment unit; wherein the fourth control command is used to control the reverse drive signal to be turned off.

[0212] It should be noted that, until the second preset time, the control device can continuously detect the position of the first contact to determine whether the adhesion position is disconnected. When the control device detects that the position of the first contact is no longer adhered, the control device can send a fourth control command to the adjustment unit to control the adjustment unit to adjust the reverse drive signal to off. Alternatively, the control device can also control the switch unit to turn off the reverse drive signal transmitted by the drive unit to the relay.

[0213] In some embodiments, the method may further include: if the sticking time of the relay exceeds a third preset time, sending a fifth control command to the adjustment unit; wherein the fifth control command is used to control the increase of the reverse drive signal so that the first contact of the relay is disconnected from the connection position.

[0214] It should be noted that the third preset time is greater than the first preset time and less than the second preset time. In this way, during the relay adhesion process, the reverse drive signal can also be increased to disconnect the first contact of the relay from the connection position.

[0215] Through the above technical means, after the relay is stuck, a reverse drive signal or a larger reverse drive signal is provided to the relay through the control device, so that the slightly stuck contacts can be pulled apart, reducing the probability of relay sticking failure.

[0216] In another embodiment of the present application, based on the drive control circuit of the aforementioned embodiment, a relay drive control strategy and circuit are provided. Specifically, the drive current is gradually reduced during the closing process of the relay to reduce the contact closing speed, reduce the closing impact force, and ultimately reduce the bounce time and the probability of adhesion. A reverse drive signal is provided during the relay disconnection process to speed up the contact breaking speed and accelerate the arc extinction. When the relay is adhered, a larger reverse drive signal is provided to increase the relay breaking force, pull the adhesion position apart, and eliminate the adhesion fault.

[0217] In some embodiments, for the closing process of the relay, Fig. 9 A schematic diagram of a working process of a relay in a closing process provided in an embodiment of the present application. Fig. 9 As shown, the following steps may be included:

[0218] S901, sending a drive power-on signal.

[0219] S902: Whether the power-on time is greater than a first time threshold.

[0220] If yes, execute step S903; if no, execute step S902.

[0221] The first time threshold may be 60% to 70% of the action time, but may also be other values, which are not specifically limited here.

[0222] S903, reducing the forward driving signal.

[0223] S904, contacts closed.

[0224] It should be noted that the forward drive current is gradually reduced during the relay closing process to achieve the effect of reducing the contact closing speed, reducing the closing impact force, and ultimately reducing the bounce time. Among them:

[0225] 1) The forward drive signal can be voltage or current, and the components and schematics for building the circuit can be diverse.

[0226] 2) When closing, the power-on time or closing speed can be detected as the judgment threshold.

[0227] 3) The step of reducing the forward drive signal can be one or more times, and the amplitude can be different each time to achieve the best effect.

[0228] It should also be noted that when the relay is in the closing process, the working state of the drive control circuit is as follows: Fig.10 As shown, K1 and K2 are disconnected, and K3 and K4 are closed to provide a positive driving signal to the relay 103. 1001 may be the positive terminal of the power supply, and 1002 may be the negative terminal of the power supply.

[0229] In some embodiments, for the disconnection process of the relay, Fig.11 A schematic diagram of a work flow of a relay in a disconnection process provided in an embodiment of the present application. Fig.11 As shown, the following steps may be included:

[0230] S1101, sending a drive power-down signal.

[0231] S1102, reducing the reverse driving signal.

[0232] S1103: Whether the power-off time is greater than a second time threshold.

[0233] If yes, execute step S1104; if no, execute step S1102.

[0234] The second time threshold may be 20% to 30% of the reset / release time, but may also be other values, which are not specifically limited here.

[0235] S1104, turn off the reverse drive signal.

[0236] S1105, contacts separated.

[0237] It should be noted that a reverse drive signal is provided during the relay disconnection process to speed up the contact breaking speed and accelerate the arc extinguishing.

[0238] 1) Reduce the reverse drive signal can be voltage or current, the components and schematics of the circuit can be diverse.

[0239] 2) When disconnecting, the power-off time or disconnection speed can be detected as the judgment threshold.

[0240] 3) The step of reducing the reverse driving signal may be one or more times, and the amplitude may be different each time to achieve the best effect.

[0241] It should also be noted that when the relay is in the disconnection process, the working state of the drive control circuit is as follows: Fig.12 As shown, K1 and K2 are closed, and K3 and K4 are opened to provide a reverse driving signal to the relay 103. 1001 may be the positive terminal of the power supply, and 1002 may be the negative terminal of the power supply.

[0242] In some embodiments, for the sticking process of the relay, Fig.13 A schematic diagram of a working process of a relay in a sticking process provided by an embodiment of the present application. Fig.13 As shown, the following steps may be included:

[0243] S1301, relay sticking is detected.

[0244] S1302: Whether the sticking time is greater than a first preset time.

[0245] If yes, execute step S1303; if no, execute step S1302.

[0246] The first preset time may be 100 milliseconds, but may also be other values, which are not specifically limited here.

[0247] S1303, provide a reverse driving signal.

[0248] S1304, whether the relay is stuck.

[0249] If yes, execute step S1305; if no, execute step S1306.

[0250] S1305: Send a sticking alarm signal.

[0251] S1306, turn off the reverse drive signal.

[0252] It should be noted that when the relay is stuck, a larger reverse drive signal is provided to increase the relay breaking force, pull the sticking position apart, and eliminate the sticking fault. Among them:

[0253] 1) The reverse drive signal can be voltage or current, and the components and schematics for building the circuit can be diverse.

[0254] 2) The upper limit of the reverse drive signal can reach the relay limit (relay coil temperature rise limit).

[0255] 3) The adhesion detection time can be adjusted according to user strategy.

[0256] 4) The reverse driving signal may be provided once or more times.

[0257] It should also be noted that when the relay is in the disconnection process, the working state of the drive control circuit is as follows: Fig.12 As shown, K1 and K2 are closed, and K3 and K4 are open to provide a reverse drive signal to the relay.

[0258] Through the above technical means, a driving circuit for a forward driving signal and a reverse driving signal is provided, which can provide forward and reverse driving signals for the relay; a control signal change strategy for reducing the driving signal when closing is provided, thereby reducing the number of bounces when closing; and a control signal change strategy for increasing the breaking speed / breaking force when opening is provided, thereby increasing the breaking speed / breaking force when breaking. In this way, the reliability of the relay can be improved.

[0259] In yet another embodiment of the present application, Fig.14 This is a schematic diagram of the structure of a control device provided in an embodiment of the present application. Fig.14 As shown, the control device 14 may include:

[0260] The sending unit 1401 is configured to send a driving command to the driving unit so that the driving unit provides a driving signal;

[0261] A determination unit 1402, configured to determine whether to provide a forward drive signal or a reverse drive signal to the relay according to the drive signal and the switch state in the switch unit;

[0262] The control unit 1403 is configured to control the action of the first contact of the relay to meet a preset closing condition according to a forward drive signal when the relay is in a closing process; or to control the action of the first contact of the relay to meet a preset breaking condition according to a reverse drive signal when the relay is in a breaking process.

[0263] In some embodiments, the determination unit 1402 is further configured to send a first switch command and a second switch command to the switch unit; determine the switch state in the switch unit according to the first switch command and the second switch command; wherein the first switch command is used to control the first group of switches to be in an on or off state, and the second switch command is used to control the second group of switches to be in an on or off state.

[0264] In some embodiments, the determination unit 1402 is further configured to determine a forward drive signal for providing a drive signal to the relay when the first group of switches is in an on state and the second group of switches is in an off state; or, to determine a reverse drive signal for providing a drive signal to the relay when the first group of switches is in an off state and the second group of switches is in an on state.

[0265] In some embodiments, the control unit 1403 is also configured to send a first control command to the adjustment unit if the current state of the relay meets the first preset condition; wherein the first control command is used to control the forward drive signal to decrease so that the action of the first contact of the relay meets the preset closing condition.

[0266] In some embodiments, the control unit 1403 is further configured such that the power-on time of the relay is greater than a first time threshold; or the closing speed of the relay is greater than a first speed threshold.

[0267] In some embodiments, the control unit 1403 is further configured to send a second control command to the adjustment unit if the current state of the relay meets a second preset condition; wherein the second control command is used to control the reverse drive signal to decrease so that the action of the first contact of the relay meets the preset disconnection condition.

[0268] In some embodiments, the control unit 1403 is also configured to send a third control command to the adjustment unit if the current state of the relay meets the second preset condition; wherein the third control command is used to control the reverse drive signal to be turned off so that the action of the first contact of the relay meets the preset disconnection condition.

[0269] In some embodiments, the control unit 1403 is further configured such that the power-off time of the relay is greater than a second time threshold; or the disconnection speed of the relay is greater than a second speed threshold.

[0270] In some embodiments, the control unit 1403 is further configured to control the first group of switches to be in an off state and the second group of switches to be in an on state when the first contact of the relay is stuck to the corresponding connection position and the sticking time exceeds a first preset time, so as to provide a reverse drive signal to the relay, and control the first contact of the relay to be disconnected from the connection position according to the reverse drive signal.

[0271] In some embodiments, the control unit 1403 is further configured to send a fourth control command to the adjustment unit if the adhesion time of the relay exceeds a second preset time and it is detected that the first contact of the relay is not adhered to the corresponding connection position; wherein the fourth control command is used to control the reverse drive signal to be turned off.

[0272] It can be understood that in this embodiment, a "unit" can be a part of a circuit, a part of a processor, a part of a program or software, etc., and of course it can also be a module, or it can be non-modular. Moreover, the components in this embodiment can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of a software functional module.

[0273] If the integrated unit is implemented in the form of a software function module and is not sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this embodiment is essentially or the part that contributes to the prior art or the whole or part of the technical solution can be embodied in the form of a software product. The computer software product is stored in a storage medium, including several instructions for a computer device (which can be a personal computer, server, or network device, etc.) or a processor to perform all or part of the steps of the method described in this embodiment. The aforementioned storage medium includes: U disk, mobile hard disk, read only memory (ROM), random access memory (RAM), disk or optical disk, etc., various media that can store program codes.

[0274] Therefore, this embodiment provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by at least one processor, the steps of the method described in any one of the above embodiments are implemented.

[0275] Based on the above computer readable storage medium, see Fig.15 , which shows a specific hardware structure diagram of a control device provided in an embodiment of the present application. Fig.15 As shown, the control device 15 may include: a communication interface 1501, a memory 1502 and a processor 1503; each component is coupled together via a bus system 1504. It is understood that the bus system 1504 is used to realize the connection and communication between these components. In addition to the data bus, the bus system 1504 also includes a power bus, a control bus and a status signal bus. However, for the sake of clarity, Fig.15 In the figure, various buses are labeled as bus system 1504. Among them:

[0276] Communication interface 1501, used for receiving and sending signals during the process of sending and receiving information with the power supply device;

[0277] Memory 1502, used to store computer programs that can be run on processor 1503;

[0278] The processor 1503 is configured to execute, when running the computer program:

[0279] Sending a driving command to the driving unit so that the driving unit provides a driving signal;

[0280] Determine whether to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit;

[0281] When the relay is in the closing process, the action of the first contact of the relay is controlled according to the forward drive signal to meet the preset closing condition; or, when the relay is in the disconnecting process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnecting condition.

[0282] It can be understood that the memory 1502 in the embodiment of the present application can be a volatile memory or a non-volatile memory, or can include both volatile and non-volatile memories. Among them, the non-volatile memory can be a read-only memory (ROM), a programmable read-only memory (PROM), an erasable programmable read-only memory (EPROM), an electrically erasable programmable read-only memory (EEPROM), or a flash memory. The volatile memory can be a random access memory (RAM), which is used as an external cache. By way of example and not limitation, many forms of RAM are available, such as static RAM (SRAM), dynamic RAM (DRAM), synchronous dynamic random access memory (SDRAM), double data rate synchronous dynamic random access memory (DDRSDRAM), enhanced synchronous dynamic random access memory (ESDRAM), synchronous link dynamic random access memory (SLDRAM), and direct memory bus random access memory (DRRAM). The memory 1502 of the systems and methods described herein is intended to include, but is not limited to, these and any other suitable types of memory.

[0283] The processor 1503 may be an integrated circuit chip with signal processing capabilities. In the implementation process, each step of the above method can be completed by the hardware integrated logic circuit or software instructions in the processor 1503. The above-mentioned processor 1503 may be a general-purpose processor, a digital signal processor (Digital Signal Processor, DSP), an application-specific integrated circuit (Application Specific Integrated Circuit, ASIC), a field programmable gate array (Field Programmable Gate Array, FPGA) or other programmable logic devices, discrete gates or transistor logic devices, discrete hardware components. The methods, steps and logic block diagrams disclosed in the embodiments of the present application can be implemented or executed. The general-purpose processor may be a microprocessor or the processor may also be any conventional processor, etc. The steps of the method disclosed in the embodiments of the present application can be directly embodied as a hardware decoding processor to be executed, or the hardware and software modules in the decoding processor are combined and executed. The software module can be located in a mature storage medium in the field such as a random access memory, a flash memory, a read-only memory, a programmable read-only memory or an electrically erasable programmable memory, a register, etc. The storage medium is located in the memory 1502, and the processor 1503 reads the information in the memory 1502 and completes the steps of the above method in combination with its hardware.

[0284] It is understood that the embodiments described herein may be implemented in hardware, software, firmware, middleware, microcode, or a combination thereof. For hardware implementation, the processing unit may be implemented in one or more application specific integrated circuits (ASIC), digital signal processors (DSP), digital signal processing devices (DSPDevice, DSPD), programmable logic devices (PLD), field programmable gate arrays (FPGA), general purpose processors, controllers, microcontrollers, microprocessors, other electronic units for performing the functions described in the present application, or a combination thereof.

[0285] For software implementation, the techniques described herein can be implemented by modules (e.g., procedures, functions, etc.) that perform the functions described herein. The software code can be stored in a memory and executed by a processor. The memory can be implemented in the processor or outside the processor.

[0286] Optionally, as another embodiment, the processor 1503 is further configured to execute the steps of the method described in any one of the aforementioned embodiments when running the computer program.

[0287] The above is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

[0288] The embodiment of the present application also provides a computer program product including instructions, which, when executed on a computer, enables the computer to execute the steps of the drive control method provided in the above method embodiment.

[0289] It should be understood that the description of the above storage medium and device embodiments is similar to the description of the above method embodiments, and has similar beneficial effects as the method embodiments. For technical details not disclosed in the storage medium, storage medium and device embodiments of this application, please refer to the description of the method embodiments of this application for understanding.

[0290] It should be understood that "one embodiment" or "an embodiment" or "some embodiments" mentioned throughout the specification means that specific features, structures or characteristics related to the embodiment are included in at least one embodiment of the present application. Therefore, "in one embodiment" or "in one embodiment" or "in some embodiments" appearing throughout the specification may not necessarily refer to the same embodiment. In addition, these specific features, structures or characteristics can be combined in one or more embodiments in any suitable manner. It should be understood that in various embodiments of the present application, the size of the sequence number of the above-mentioned processes does not mean the order of execution, and the execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiment of the present application. The above-mentioned sequence numbers of the embodiments of the present application are only for description and do not represent the advantages and disadvantages of the embodiments. The above description of each embodiment tends to emphasize the differences between the various embodiments, and the same or similar aspects can be referenced to each other. For the sake of brevity, this article will not repeat them.

[0291] It should also be noted that in this application, the terms "include", "comprises" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0292] The serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0293] The methods disclosed in several method embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments.

[0294] The features disclosed in several product embodiments provided in this application can be arbitrarily combined without conflict to obtain new product embodiments.

[0295] The features disclosed in several method or device embodiments provided in this application can be arbitrarily combined without conflict to obtain new method embodiments or device embodiments.

[0296] The above description is only a specific implementation manner of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be included in the protection scope of the present application.

[0297] The above is only a preferred embodiment of the present application and is not intended to limit the scope of protection of the present application. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present application should be included in the scope of protection of the present application.

Claims

1. A drive control circuit, characterized in that: The drive control circuit comprises a drive unit, a switch unit, a relay and an adjustment unit, wherein the switch unit is connected between the drive unit and the relay; wherein: The driving unit is used to provide a driving signal; The switch unit is used to provide a forward drive signal or a reverse drive signal to the relay according to the drive signal and the switch state in the switch unit; wherein the switch unit includes a first switch, a second switch, a third switch and a fourth switch, the first switch is connected in series between the positive terminal of the drive unit and the negative terminal of the relay, the second switch is connected in series between the negative terminal of the drive unit and the positive terminal of the relay, the third switch is connected in series between the positive terminal of the drive unit and the positive terminal of the relay, and the fourth switch is connected in series between the negative terminal of the drive unit and the negative terminal of the relay; The relay is used to control the action of the first contact of the relay to meet a preset closing condition according to the forward drive signal when the relay is in a closing process; or to control the action of the first contact of the relay to meet a preset breaking condition according to the reverse drive signal when the relay is in a breaking process; The adjustment unit is used to receive a control command according to the current state of the relay; and adjust the magnitude of the forward drive signal or the reverse drive signal according to the control command, wherein the frequency and amplitude of the adjustment are determined according to the control command, and the control command is associated with the current state of the relay; when the relay is in a closing process, the control command is used to control the adjustment unit to adjust the magnitude of the forward drive signal, and when the relay is in a breaking process, the control command is used to control the adjustment unit to adjust the magnitude of the reverse drive signal; The relay is further used to control the first contact of the relay to be separated from the connection position according to the reverse drive signal when the first contact of the relay is adhered to the corresponding connection position and the adhesion time exceeds a first preset time.

2. The drive control circuit according to claim 1, characterized in that: The switch unit comprises a first group of switches and a second group of switches, wherein: The switch unit is used to provide a forward drive signal to the relay according to the drive signal when the first group of switches is in an on state and the second group of switches is in an off state; or, the switch unit is used to provide a reverse drive signal to the relay according to the drive signal when the first group of switches is in an off state and the second group of switches is in an on state.

3. The drive control circuit according to claim 1, characterized in that: The driving control circuit further includes an adjusting unit, and the adjusting unit is connected to the output end of the driving unit, or the adjusting unit is connected to the output end of the switching unit.

4. The drive control circuit according to claim 3, characterized in that: When the relay is in the closing process, if the current state of the relay meets the first preset condition, the adjustment unit is used to receive a first control command and control the forward drive signal to decrease according to the first control command so that the action of the first contact of the relay meets the preset closing condition.

5. The drive control circuit according to claim 4, characterized in that: The current state of the relay satisfies a first preset condition, including: The power-on time of the relay is greater than a first time threshold; or, the closing speed of the relay is greater than a first speed threshold.

6. The drive control circuit according to claim 3, characterized in that: When the relay is in the disconnecting process, if the current state of the relay meets the second preset condition, the adjustment unit is used to receive a second control command and control the reverse drive signal to decrease according to the second control command so that the action of the first contact of the relay meets the preset disconnecting condition.

7. The drive control circuit according to claim 3, characterized in that: When the relay is in the disconnecting process, if the current state of the relay meets the second preset condition, the adjustment unit is used to receive a third control command and control the reverse drive signal to be closed according to the third control command, so that the action of the first contact of the relay meets the preset disconnecting condition.

8. The drive control circuit according to claim 7, characterized in that: The current state of the relay satisfies the second preset condition, including: The power-off time of the relay is greater than a second time threshold; or, the disconnection speed of the relay is greater than a second speed threshold.

9. The drive control circuit according to claim 1, characterized in that: When the sticking time of the relay exceeds the second preset time and it is detected that the first contact of the relay is not stuck to the corresponding connection position, the adjustment unit is further used to receive a fourth control command and control the reverse drive signal to be turned off according to the fourth control command.

10. The drive control circuit according to claim 1, characterized in that: The relay is further configured to send a sticking alarm signal when the sticking time of the relay exceeds a second preset time and it is detected that the first contact of the relay is stuck to the corresponding connection position.

11. A drive control method, characterized in that: The method comprises: Sending a driving command to the driving unit so that the driving unit provides a driving signal; Determining whether to provide a forward driving signal or a reverse driving signal to the relay according to the driving signal and the switch state in the switch unit; When the relay is in the closing process, the action of the first contact of the relay is controlled according to the forward drive signal to meet the preset closing condition; or, when the relay is in the disconnecting process, the action of the first contact of the relay is controlled according to the reverse drive signal to meet the preset disconnecting condition; The method further comprises: receiving a control command according to the current state of the relay; and adjusting the magnitude of the forward drive signal or the reverse drive signal according to the control command, wherein the frequency and amplitude of the adjustment are determined according to the control command, and the control command is associated with the current state of the relay; when the relay is in a closing process, the control command is used to adjust the magnitude of the forward drive signal, and when the relay is in a breaking process, the control command is used to adjust the magnitude of the reverse drive signal; When the first contact of the relay is adhered to the corresponding connection position and the adhesion time exceeds a first preset time, a reverse drive signal is provided to the relay, and the first contact of the relay is controlled to be separated from the connection position according to the reverse drive signal.

12. The method according to claim 11, characterized in that The switch unit includes a first group of switches and a second group of switches; the method further includes: sending a first switch command and a second switch command to the switch unit; The switch state in the switch unit is determined according to the first switch command and the second switch command; wherein the first switch command is used to control the first group of switches to be in an on or off state, and the second switch command is used to control the second group of switches to be in an on or off state.

13. The method according to claim 12, characterized in that The step of determining, according to the driving signal and the switch state in the switch unit, to provide a forward driving signal or a reverse driving signal to the relay comprises: When the first group of switches is in the on state and the second group of switches is in the off state, a forward driving signal of the driving signal is determined to be provided to the relay; or, when the first group of switches is in the off state and the second group of switches is in the on state, a reverse driving signal of the driving signal is determined to be provided to the relay.

14. The method according to any one of claims 11 to 13, characterized in that When the relay is in the closing process, the action of controlling the first contact of the relay according to the forward driving signal to meet a preset closing condition includes: If the current state of the relay meets the first preset condition, a first control command is sent to the adjustment unit; wherein the first control command is used to control the forward drive signal to decrease so that the action of the first contact of the relay meets the preset closing condition.

15. The method according to claim 14, characterized in that The current state of the relay satisfies a first preset condition, including: The power-on time of the relay is greater than a first time threshold; or, the closing speed of the relay is greater than a first speed threshold.

16. The method according to any one of claims 11 to 13, characterized in that When the relay is in the disconnecting process, the action of controlling the first contact of the relay according to the reverse driving signal to meet the preset disconnecting condition includes: If the current state of the relay meets the second preset condition, a second control command is sent to the adjustment unit; wherein the second control command is used to control the reverse drive signal to decrease so that the action of the first contact of the relay meets the preset disconnection condition.

17. The method according to any one of claims 11 to 13, characterized in that When the relay is in the disconnecting process, the action of controlling the first contact of the relay according to the reverse driving signal to meet the preset disconnecting condition includes: If the current state of the relay meets the second preset condition, a third control command is sent to the adjustment unit; wherein the third control command is used to control the reverse drive signal to be turned off so that the action of the first contact of the relay meets the preset disconnection condition.

18. The method according to claim 17, characterized in that The current state of the relay satisfies the second preset condition, including: The power-off time of the relay is greater than a second time threshold; or, the disconnection speed of the relay is greater than a second speed threshold.

19. The method according to claim 12 or 13, characterized in that: The method further comprises: When the first contact of the relay is adhered to the corresponding connection position and the adhesion time exceeds a first preset time, the first group of switches is controlled to be in an off state and the second group of switches is controlled to be in an on state.

20. The method according to claim 19, characterized in that The method further comprises: If the sticking time of the relay exceeds the second preset time and it is detected that the first contact of the relay is not stuck to the corresponding connection position, a fourth control command is sent to the adjustment unit; wherein the fourth control command is used to control the reverse drive signal to be turned off.

21. A control device, characterized in that: include: Memory for storing computer programs; The processor is configured to execute the drive control method according to any one of claims 11 to 20 when executing the computer program stored in the memory.

22. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the drive control method according to any one of claims 11 to 20 is implemented.

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