A drive control circuit, method and device

Abstract

The present invention provides a drive control circuit, method and device. The drive control circuit includes: a plurality of converter modules, each of the converter modules includes a primary coil and a first control unit, and two adjacent converter modules are connected in parallel; and an output module, the output module includes a secondary coil, and each of the primary coils is matched with the secondary coil. When the output power needs to be driven, a drive signal is connected to the input end of the primary coil, and the output end of the primary coil is controlled to conduct. When the primary coil completes energy storage, the output end of the primary coil is controlled to open. At this time, the magnetic induction intensity of the primary coil changes, thereby exciting the secondary coil and completing energy conversion. By connecting multiple primary coils in parallel, more energy can be stored, and thus the purpose of increasing the output power of the secondary coil can be achieved without adding redundant components.

Description

Technical Field

[0001] The present invention relates to the field of electrical control, and particularly to a drive control circuit, method, and device. Background Art

[0002] Generally, a power supply requires a drive control circuit to achieve the power output of the power supply energy. Currently, power switching devices are generally used in the power supply drive control circuit to achieve output control. Due to the limitations of the architecture of the power supply drive control circuit and components, when increasing the output power of the power supply drive control circuit, it is necessary to change the architecture of the drive control circuit and add additional components to achieve the purpose of improving the technical specifications of the output power of the drive control circuit, resulting in a high cost. Summary of the Invention

[0003] In view of the above-mentioned disadvantages of the prior art, the purpose of the present invention is to provide a drive control circuit, method, and device for solving the problem of high cost in increasing the output power of the drive control circuit in the prior art.

[0004] To achieve the above object and other related objects, the present invention provides a drive control circuit, including:

[0005] A plurality of converter modules, each of the converter modules includes a primary coil and a first control unit, the output end of the primary coil is connected to the first control unit, the input end of the primary coil is used to access a drive signal, and two adjacent converter modules are connected in parallel; and

[0006] An output module, the output module includes a secondary coil, and each of the primary coils is matched with the secondary coil.

[0007] Optionally, the converter module further includes a first diode, the input end of the first diode is connected to the output end of the primary coil, and the output end of the first diode is connected to the first control unit.

[0008] Optionally, an RC circuit unit is provided between the input end and the output end of the primary coil.

[0009] Optionally, the RC circuit unit includes a first resistor, a first capacitor, and a second diode, the first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output end of the second diode, and the input end of the second diode is connected to the output end of the primary coil.

[0010] Optionally, the drive control circuit further includes a second resistor, and the second resistor is respectively connected to the output ends of two adjacent primary coils.

[0011] Optionally, the first control unit includes at least one of the following: a field effect transistor, a relay, and a change-over switch.

[0012] Optionally, the output module further includes a third diode and a second capacitor. The input end of the third diode is connected to the secondary side coil, the output end of the third diode is connected to the output end of the output module, and the second capacitor is respectively connected to the output end of the third diode and the ground wire of the output module.

[0013] Optionally, the first control unit includes a signal input end, a signal output end, and a signal control end. The signal input end is connected to the output end of the secondary side coil, the signal output end is connected to the ground wire of the converter module, and the signal control end is used for receiving a control signal.

[0014] Optionally, the converter module further includes a second control unit. The second control unit includes a control signal input end, a third resistor, and a fourth diode. The third resistor is respectively connected in series with each of the signal control ends. The input end of the fourth diode is connected to each of the signal control ends, and the output end of the fourth diode is connected to the control signal input end.

[0015] A driving control method includes:

[0016] Connect a driving signal to the input ends of a plurality of primary side coils and store energy for the primary side coils, wherein two adjacent primary side coils are connected in parallel;

[0017] Open-circuit the output ends of each of the primary side coils;

[0018] Each of the primary side coils releases energy to a secondary side coil, completing the driving control of the output power for one cycle.

[0019] Optionally, a first control unit is used to control the conduction or open-circuit of the output ends of each of the primary side coils.

[0020] Optionally, the first control unit includes at least one of the following: a field effect transistor, a relay, and a change-over switch.

[0021] Optionally, the first control unit includes a signal input end, a signal output end, and a signal control end. The signal input end is connected to the output end of the secondary side coil, the signal output end is connected to the ground wire of the converter module, and the signal control end is used for receiving a control signal.

[0022] Optionally, a second control unit generates the control signal and controls the signal control terminal. The second control unit includes a control signal input terminal, a third resistor, and a fourth diode. The third resistor is connected in series with each of the signal control terminals, the input terminal of the fourth diode is connected to each of the signal control terminals, and the output terminal of the fourth diode is connected to the control signal input terminal.

[0023] Optionally, an RC circuit unit is provided between the input terminal and the output terminal of the primary coil. When each of the primary coils releases energy to a secondary coil, the RC circuit unit absorbs the voltage signal released by the secondary coil.

[0024] Optionally, the RC circuit unit includes a first resistor, a first capacitor, and a second diode. The first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output terminal of the second diode. The input terminal of the second diode is connected to the output terminal of the primary coil.

[0025] Optionally, a second resistor balances the timing between two adjacent primary coils. The second resistor is connected to the output terminals of two adjacent primary coils respectively.

[0026] Optionally, a first diode conducts the output terminal of the primary coil in a unidirectional manner. The input terminal of the first diode is connected to the output terminal of the primary coil, and the output terminal of the first diode is connected to the first control unit.

[0027] A drive control device includes:

[0028] A plurality of converter modules, each of the converter modules includes a primary coil and a first control unit. The output terminal of the primary coil is connected to the first control unit, the input terminal of the primary coil is used to receive a drive signal, and two adjacent converter modules are connected in parallel;

[0029] An input module, the input module is used to output the drive signal, and the output terminal of the input module is connected to the input terminal of the primary coil; and

[0030] An output module, the output module includes a secondary coil, and each of the primary coils is matched with the secondary coil.

[0031] As described above, the drive control circuit, method, and device of the present invention have the following beneficial effects:

[0032] When the output power needs to be driven, the input end of the primary coil is connected to the drive signal to control the conduction of the output end of the primary coil. When the primary coil completes energy storage, the output end of the primary coil is controlled to be open. At this time, the magnetic induction intensity of the primary coil changes, thereby exciting the secondary coil and completing energy conversion. By connecting multiple primary coils in parallel, more energy can be stored, and thus the purpose of increasing the output power of the secondary coil can be achieved without adding redundant components. Description of the Drawings

[0033] Figure 1 It shows a schematic structural diagram of the drive control circuit in Embodiment 1 of the present invention.

[0034] Figure 2 It shows a schematic structural diagram of the drive control circuit in Embodiment 2 of the present invention.

[0035] Figure 3 It shows a schematic flowchart of the drive control method in Embodiment 3 of the present invention.

[0036] Figure 4 It shows a schematic diagram of the signal flow of the drive control method in Embodiment 4 of the present invention.

[0037] Figure 5 It shows a schematic structural diagram of the drive control device in Embodiment 5 of the present invention.

[0038] Figure 6 It shows a schematic structural diagram of a charging device with a drive control circuit in an embodiment of the present invention.

[0039] Figure 7 It shows a schematic structural diagram of a charging device with a drive control circuit in an embodiment of the present invention.

[0040] Figure 8 It shows a schematic structural diagram of the housing in an embodiment of the present invention.

[0041] Figure 9 It shows a schematic structural diagram of another charging device with a drive control circuit in an embodiment of the present invention.

[0042] Figure 10 It shows a schematic structural diagram of the terminal in an embodiment of the present invention.

[0043] Figure 11 It shows a schematic structural diagram of the receiving groove in an embodiment of the present invention.

[0044] Figure 12 It shows a partial structural schematic diagram inside the housing in an embodiment of the present invention.

[0045] Description of the Part Numbers

[0046] Converter module 10, output module 20, charging device 1, housing 10, opening 101, notch 102, first housing 110, clamping point 111, cover plate 112, first terminal interface 113, second terminal interface 114, third terminal interface 115, second housing 120, clamping post 121, third housing 130, connecting member 131, second plane 133, receiving groove 134, first opening 135, first recess 136, secondary circuit board 200, first secondary circuit board 201, second secondary circuit board 202, first terminal 203, second terminal 204, third terminal 205, main circuit board 208, output protection device 300. Detailed implementation

[0047] The following uses specific specific examples to illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation manners. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention.

[0048] Please refer to Figures 1 to 12 . It should be noted that the illustrations provided in this embodiment only schematically illustrate the basic concept of the present invention. Therefore, only the components related to the present invention are shown in the drawings, rather than being drawn according to the number, shape, and size of the components in actual implementation. The type, quantity, and ratio of each component in actual implementation can be arbitrarily changed, and the component layout type may also be more complex. The structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those skilled in this technology to understand and read, and are not used to limit the limiting conditions under which the present invention can be implemented. Therefore, they do not have technical substance. Any modification of the structure, change of the proportional relationship, or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention. At the same time, the terms such as "upper", "lower", "left", "right", "middle", and "one" cited in this specification are only for the convenience of clear narration, rather than being used to limit the scope within which the present invention can be implemented. The change or adjustment of their relative relationships, without substantial change in technical content, should also be regarded as the scope within which the present invention can be implemented.

[0049] Please refer to Figure 1 , Embodiment 1 of the present invention provides a drive control circuit, including:

[0050] A plurality of converter modules 10, each of the converter modules 10 includes a primary coil and a first control unit. The output end of the primary coil is connected to the first control unit, and the input end of the primary coil is used to access a drive signal. Two adjacent converter modules 10 are connected in parallel. For example, the number of converter modules 10 can be set to 2, 3, ……, n, where n≥2 and n is a positive integer. Without changing the architecture of the drive control circuit and adding extra components, adding multiple primary coils can store more energy. When each primary coil needs to release energy externally, the output power of the primary coil to the outside can be increased.

[0051] An output module 20, the output module 20 includes a secondary coil, and each of the primary coils is matched with the secondary coil. When the drive of the output power is required, the drive signal is accessed at the input end of the primary coil, and the first control unit controls the output end of the primary coil to conduct. When the primary coil completes energy storage, the first control unit controls the output end of the primary coil to open. At this time, the magnetic induction intensity of the primary coil changes, thereby exciting the secondary coil and completing energy conversion. After the energy conversion is completed, the secondary coil outputs power externally. By connecting multiple primary coils in parallel, more energy can be stored, and thus the purpose of increasing the output power of the secondary coil can be achieved without adding redundant components, effectively reducing costs.

[0052] Embodiment 2 provides an implementation scheme of a drive control circuit. In this embodiment, two converter modules are used for exemplary illustration. During the implementation process, the number of converter modules / primary coils can be selected according to specific product requirements and actual working conditions. For example, the drive control circuit includes 3 converter modules / primary coils. Another example is that the drive control circuit includes 4 or more converter modules / primary coils. Please refer to Figure 2, the driving signal is input through DC-IN. Since the primary coils T1 and T2 are connected in parallel and the input ends of the primary coils T1 and T2 are both connected to the driving signal, the first controllers Q1 and Q2 respectively conduct the output ends of the primary coils T1 and T2. Therefore, the primary coils T1 and T2 form a path and store energy in the primary coils T1 and T2. When the primary coils T1 and T2 store energy, the electrical energy of the driving signal is converted into electromagnetic energy. When the primary coils T1 and T2 complete energy storage, the first controllers Q1 and Q2 respectively conduct open-circuit control on the output ends of the primary coils T1 and T2. At this time, the stored electromagnetic energy of the primary coils T1 and T2 decays, and then the primary coils T1 and T2 both convert the electromagnetic energy into electrical energy with the secondary coil T0, and finally complete the driving control of the output power for one cycle. Because the total impedance in the driving control circuit is relatively low when accessing the driving circuit, the heat loss is correspondingly small, and at the same time, the temperature rise caused by the resistance loss will also be reduced. For example, the temperature rise can be reduced by about 30%.

[0053] To protect the output ends of the primary coils T1 and T2 against overcurrent and to absorb the reverse spike voltage when the output ends of the primary coils T1 and T2 are open-circuited, the converter module further includes a first diode. The input end of the first diode is connected to the output end of the primary coil, and the output end of the first diode is connected to the first control unit. For example, a first diode D1 is provided at the output end of the primary coil T1. The input end of the first diode D1 is connected to the output end of the primary coil T1, and the output end of the first diode D1 is connected to the first controller Q1. A first diode D2 is provided at the output end of the primary coil T2. The input end of the first diode D2 is connected to the output end of the primary coil T2, and the output end of the first diode D2 is connected to the first controller Q2. At the same time, the first diode D1 and the first diode D2 can also be set as isolation diodes, which can also eliminate the interference problem caused by the difference between the primary coils T1 and T2. By connecting the two primary coils T1 and T2 in parallel, the output power can be increased by 45% - 64%, and the cost only increases by about 5%, having good product performance and cost advantages.

[0054] To further absorb the reverse spike voltage when the output ends of the primary coils T1 and T2 are open-circuited, an RC circuit unit is provided between the input end and the output end of the primary coil to avoid the instantaneous reverse spike voltage generated when the primary coil is open-circuited and to avoid the breakdown effect on the entire driving control circuit.

[0055] To avoid the RC circuit unit from absorbing too much energy stored in the primary coil and also avoid reducing the output power of the drive, the RC circuit unit includes a first resistor, a first capacitor, and a second diode. The first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output terminal of the second diode. The input terminal of the second diode is connected to the output terminal of the primary coil. For example, in the first converter module, the RC circuit unit includes a first resistor R1, a first capacitor C1, and a second diode D3. When the primary coil T1 completes energy storage and the output terminal is open, the primary coil T1 releases energy to the secondary coil T0. The second diode D3 conducts the released energy unidirectionally, and the first diode D1, the first resistor R1, and the first capacitor C1 absorb the reverse spike voltage. Another example is that in the second converter module, the RC circuit unit includes a first resistor R2, a first capacitor C2, and a second diode D4. When the primary coil T2 completes energy storage and the output terminal is open, the primary coil T2 releases energy to the secondary coil T0. The second diode D4 conducts the released energy unidirectionally, and the first diode D2, the first resistor R2, and the first capacitor C2 absorb the reverse spike voltage. Furthermore, the primary coil T1 and the primary coil T2 simultaneously release energy to the secondary coil T0 to complete the drive control of the output power for one cycle.

[0056] To balance the response timing between two adjacent converter modules and adjust the difference in output power, the drive control circuit further includes a second resistor. The second resistor is respectively connected to the output terminals of two adjacent primary coils. For example, a second resistor RD can be set between the output terminals of the primary coil T1 and the primary coil T2. Another example is that one end of the second resistor RD is set between the output terminal of the first diode D1 and the first controller Q1, and the other end of the second resistor RD is set between the output terminal of the first diode D2 and the first controller Q2.

[0057] To facilitate the signal control of the first control unit and also facilitate the conduction and interruption of the output terminal of the primary coil, the first control unit includes at least one of the following: a field-effect transistor, a relay, and a changeover switch. For example, the field-effect transistor can be a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). Also, for example, the control unit includes a signal input terminal, a signal output terminal, and a signal control terminal. The signal input terminal is connected to the output terminal of the secondary coil, the signal output terminal is connected to the ground wire of the converter module, and the signal control terminal is used to receive a control signal. For example, the signal input terminal and the signal output terminal can be the source or drain of the field-effect transistor, and the signal control terminal can be the gate of the field-effect transistor. By applying a control signal to the gate of the field-effect transistor, conduction between the source and drain can be achieved, and by applying a control signal to the gate of the field-effect transistor, cut-off or interruption between the source and drain can also be achieved. For example, the signal input terminal and the signal output terminal can be the input terminal and output terminal of a normally-closed relay. By controlling the closing and opening of the signal control terminal of the normally-closed relay with a control signal, the conduction and interruption of the primary coil can be controlled. Also, for example, the first control unit can also be a normally-closed changeover switch. When energy storage of the primary coil is required, the output terminal of the primary coil is conductive. When energy release from the primary coil to the secondary coil is required, the first control unit can be changed from a normally-closed to a normally-open changeover switch to complete the interruption of the output terminal of the primary coil.

[0058] To implement the control of the control signal, the converter module further includes a second control unit. The second control unit includes a control signal input terminal GATE, a third resistor RS, and a fourth diode DR. The third resistor RS is respectively connected in series with each of the signal control terminals. For example, the third resistor RS is respectively connected in series with the signal control terminal of the first controller Q1 and the signal control terminal of the first controller Q2. The input terminal of the fourth diode DR is connected to each of the signal control terminals, and the output terminal of the fourth diode DR is connected to the control signal input terminal GATE.

[0059] To prevent the secondary coil from generating a reverse voltage to the primary coil, the output module further includes a third diode D and a second capacitor C. The input terminal of the third diode D is connected to the secondary coil T0, the output terminal of the third diode D is connected to the output terminal OUT of the output module, and the second capacitor C is respectively connected to the output terminal of the third diode D and the ground wire FGND of the output module.

[0060] Please refer to Figures 6 to 12As shown, in an embodiment of the present invention, a charging device 1 with a drive control circuit is provided. The charging device includes a housing 10 and a drive control circuit, and the drive control circuit is arranged inside the accommodation cavity formed by the housing 10. Among them, the drive control circuit is provided with a plurality of terminals, and a plurality of jacks are arranged on the housing 10, and the jacks are arranged corresponding to the terminals, and the terminals pass through the through holes on the housing 10 to the outside of the housing 10. When charging an electronic device is required, the charging interface (charging interface / discharging interface) of the electronic device is electrically connected to the drive control circuit to realize charging / discharging of the electronic device or charging of the circuit board. The electronic devices driven by the driven circuit in this application include but are not limited to electronic devices such as vacuum cleaners, rechargeable batteries, mobile phones, tablets, and computers.

[0061] In another embodiment of the present invention, the housing 10 includes a first housing 110, a second housing 120, and a third housing 130. The first housing 110 and the second housing 120 are snapped together to form an accommodation cavity with an opening 101 on one side, and the third housing 130 is snapped onto the opening 101. Thus, the first housing 110, the second housing 120, and the third housing 130 form a closed accommodation cavity, and a receiving groove 134 is further arranged on the third housing 130 for placing an electronic device or a rechargeable battery. In the present invention, the housing 10 is made of a non-conductive material, such as hard plastic, etc., or other non-conductive materials can also be used. In a specific embodiment of the invention, the housing 10 is made of acrylonitrile-butadiene-styrene plastic (Acrylonitrile Butadiene Styrene plastic, ABS). This material has excellent impact resistance, heat resistance, low temperature resistance, chemical resistance, and electrical performance, and is easy to process, the product size is stable, the surface gloss is good, etc., and it is easy to paint, color, and secondary process. For the housing 10 made of this material, the weight of the first housing 110 is, for example, 80-85 grams, preferably 85 grams; the weight of the first housing 110 is, for example, 70-75 grams, preferably 73 grams; the weight of the first housing 110 is, for example, 120-125 grams, preferably 120 grams.

[0062] In a specific embodiment of the present invention, the housing 10 has a cuboid structure with a notch 102, and a receiving groove 134 is arranged on the notch 102. The cuboid structure is, for example, a right trapezoid, and the notch 102 is located at the connection of the longer bottom side and the hypotenuse of the right trapezoid.

[0063] Specifically, please refer to Figures 6 to 12As shown, in this embodiment, the second housing 120 has the same shape as the first housing 110, which is a concave portion with a right trapezoidal bottom wall having a notch 102, and the notch 102 is located at the connection of the longer base and the hypotenuse of the right trapezoid. In the concave portion of the second housing 120, a plurality of clamping posts 121 (or clamping points 111) are provided. In the concave portion of the first housing 110, a plurality of clamping points 111 (or clamping posts 121) are provided. Through the plurality of clamping posts 121 and clamping points 111, the first housing 110 and the second housing 120 are clamped together to form a housing 10 with an opening 101. The opening 101 is located on the side wall of the right trapezoidal housing 10 and on the side wall of the shorter base and the hypotenuse; the third housing 130 covers the opening 101 and the notch 102 of the housing 10, and a plurality of annular connecting members 131 are provided on the third housing 130, and their positions are correspondingly arranged with the clamping posts 121 / clamping points 111. When the clamping posts 121 and the clamping points 111 are clamped, the clamping posts 121 and the clamping points 111 pass through the connecting members 131 to fixedly connect the third housing 130 to the first housing 110 and the second housing 120, forming a housing 10 with a receiving groove 134.

[0064] The drive control circuit provided in the housing 10 may include a plurality of different types of terminals. The plurality of different types of terminals can input drive signals or realize the drive control of the output power through the terminals. The circuit board of the drive control circuit includes a main circuit board 208 and a sub-circuit board 200. The sub-circuit board 200 is electrically connected to the main circuit board 208, and the sub-circuit board 200 includes a first sub-circuit board 201 and a plurality of second sub-circuit boards 202. Specifically, the first sub-circuit board 201 is located inside the housing 10 and is arranged parallel to the first housing 110; one end of the plurality of second sub-circuit boards 202 is fixed on the first sub-circuit board 201, and the second sub-circuit boards 202 are arranged perpendicular to the first sub-circuit board 201. In this embodiment, the number of the second sub-circuit boards 202 is, for example, 4. Some of the first sub-circuit boards 201 are electrically connected to a plurality of first terminals 203, and other first sub-circuit boards 201 are electrically connected to second terminals 204. In this embodiment, for example, 3 first sub-circuit boards 201 close to the receiving groove 134 are used to be electrically connected to the first terminals 203, and for example, 1 first sub-circuit board 201 far from the receiving groove 134 is used to be electrically connected to the second terminals 204. In this embodiment, the circuit board is made of a non-conductive material, such as rigid plastic, etc. A charging conversion circuit is provided on the circuit board to convert the voltage of alternating current or a battery pack into the required voltage to charge various electronic devices. The power of the circuit board provided by the present invention can be 5W to 400W.

[0065] The first housing 110 further includes a cover plate 112, which is located below the receiving groove 134 and protrudes above the surface of the first housing 110. The cover plate 112 is fixed to the first housing 110 and covers a plurality of first terminals 203 and second terminals 204. A plurality of terminal interfaces are further provided on the cover plate 112 to allow the first terminals 203 and the second terminals 204 to pass through. Specifically, the through holes on the cover plate 112 include a plurality of first terminal interfaces 113, and the plurality of first terminal interfaces 113 are arranged side by side on the cover plate 112. In this embodiment, the opening 101 direction of the receiving groove 134 is defined as the upper side. Then, the plurality of first terminal interfaces 113 are located below the receiving groove 134, and the plurality of first terminal interfaces 113 are arranged side by side from top to bottom. The number of the first terminal interfaces 113 is, for example, 3. In this embodiment, the plurality of first terminal interfaces 113 provide channels for the plurality of first terminals 203. Then, the size and shape of the first terminal interfaces 113 are adapted to the first terminals 203 to allow the first terminals 203 to pass through the first terminal interfaces 113. The number of the first terminals 203 is the same as that of the first terminal interfaces 113, for example, 3. The first terminal 203 provided by the present invention is, for example, a type-c fast charging voltage output terminal, and each first terminal 203 can independently output voltage. The output power range of the first terminal 203 is 5W to 55W, and the output current range of the first terminal 203 is 1A to 10A.

[0066] Furthermore, a second terminal interface 114 is further provided on the cover plate 112. In this embodiment, the second terminal interface 114 is located below the receiving groove 134, and the second terminal interface 114 is arranged side by side with the plurality of first terminal interfaces 113. The number of the second terminal interfaces 114 is, for example, 1. In this embodiment, the second terminal interface 114 provides a channel for the second terminal 204. Then, the size and shape of the second terminal interface 114 are adapted to the second terminal 204 to allow the second terminal 204 to pass through the second terminal interface 114. The second terminal 204 provided by the present invention is, for example, a Universal Serial Bus (USB) voltage output terminal. The output power range of the second terminal 204 is 5W to 55W, and the output current range of the second terminal 204 is 1A to 10A.

[0067] The drive control circuit further includes a third terminal 205. The through hole in the first housing 110 further includes a third terminal interface 115. In this embodiment, when the charging device is placed vertically (the opening 101 of the receiving groove 134 faces upward), the third terminal interface 115 and the second terminal interface 114 on the cover plate 112 are on the same horizontal plane. The third terminal interface 115 provides a channel for the third terminal 205. The third terminal 205 is, for example, the voltage output terminal of the charging battery. The output power range of the third terminal 205 is 10W - 200W, and the output current range of the third terminal 205 is 0.5A - 10A. Voltage input can also be provided to the drive control circuit through the third terminal 205, and its input power has the same range as the output power, and the input current has the same range as the output current.

[0068] Specifically, in this embodiment, the third terminal 205 is a metal terminal exposed outside. To ensure the safety of operation, an output protection device 300 is provided at the third terminal interface 115 to ensure that the third terminal 205 is covered when there is no electronic device on the third terminal 205.

[0069] Please refer to Figure 9 and 11 In an embodiment of the present invention, the receiving groove 134 is arranged in a U shape. One side of the second plane 133 is fixedly connected to an outer side wall of the receiving groove 134. The side wall and the bottom wall of the receiving groove 134 connected to the second plane 133 are adapted to the notch 102. In this embodiment, the side wall of the receiving groove 134 extends beyond the height where the second plane 133 is located, for maintaining the stability of the electronic device placed in the receiving groove 134. To ensure the smooth connection between the side wall of the receiving groove 134 and the second plane 133, a first recess 136 is provided on the side wall of the receiving groove 134 connected to the second plane 133. The size of the receiving groove 134 is adapted to the size of the charging battery, and symmetric first openings 135 are provided at both ends of the receiving groove 134. The first openings 135 have a first preset distance from the bottom wall of the receiving groove 134 and a second preset distance from the side wall of the receiving groove 134, ensuring the fixation of the charging battery, and when it is necessary to charge electronic devices such as mobile phones and tablets, the electronic devices can be placed on the first openings 135.

[0070] Please refer to Figure 3 Embodiment 3 provides a drive control method, including:

[0071] S1: Connect a driving signal to the input ends of several primary coils and store energy in the primary coils. The process of storing energy in each primary coil is: the process of converting the electrical energy of the driving signal into electromagnetic energy of the primary coil. Among them, two adjacent primary coils are connected in parallel. Through the parallel connection of several primary coils, the driving signal can be received for excitation simultaneously, thereby completing the energy storage of several primary coils. Without changing the circuit structure and without adding redundant components, the energy stored in the primary coil can be increased, and the output power when the primary coil releases energy to the secondary coil can be increased;

[0072] S2: When the energy storage of each primary coil is completed, open the output ends of each primary coil. At this time, the electromagnetic energy stored in each primary coil gradually decays;

[0073] S3: The decaying primary coil excites the secondary coil, and the conversion of electromagnetic energy into electrical energy and power output occur in the secondary coil. Each primary coil releases energy to a secondary coil, completing the drive control of the output power for one cycle. By releasing energy from several parallel primary coils to the secondary coil, the magnitude of the output power generated by this drive is increased.

[0074] To facilitate the control of the output ends of each primary coil and meet the drive control of energy storage and energy release of each parallel primary coil, a first control unit is used to control the conduction or interruption of the output ends of each primary coil.

[0075] In some implementation processes, the first control unit includes at least one of the following: a field effect transistor, a relay, and a change-over switch. For example, the field effect transistor can be a MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor). Also for example, the control unit includes a signal input terminal, a signal output terminal, and a signal control terminal. The signal input terminal is connected to the output terminal of the secondary side coil. The signal output terminal is connected to the ground wire of the converter module. The signal control terminal is used to receive a control signal. For example, the signal input terminal and the signal output terminal can be the source or drain of the field effect transistor, and the signal control terminal can be the gate of the field effect transistor. By applying a control signal to the gate of the field effect transistor, conduction between the source and the drain can be achieved, and by applying a control signal to the gate of the field effect transistor, cut-off or open circuit between the source and the drain can also be achieved. For example, the signal input terminal and the signal output terminal can be the input terminal and the output terminal of a normally closed relay. By controlling the closing and opening of the signal control terminal of the normally closed relay with a control signal, conduction and open circuit of the primary side coil can be controlled. Also for example, the first control unit can also be a normally closed change-over switch. When energy storage of the primary side coil is required, the output terminal of the primary side coil is conducted. When energy needs to be released from the primary side coil to the secondary side coil, the first control unit can be changed from a normally closed change-over switch to a normally open change-over switch to complete the open circuit of the output terminal of the primary side coil.

[0076] To further control the response of the signal control terminal, the control signal is generated by a second control unit and used to control the signal control terminal. The second control unit includes a control signal input terminal, a third resistor, and a fourth diode. The third resistor is connected in series with each of the signal control terminals respectively. The input terminal of the fourth diode is connected to each of the signal control terminals, and the output terminal of the fourth diode is connected to the control signal input terminal.

[0077] To further absorb the reverse spike voltage when the output terminals of each of the primary side coils are open circuited, an RC circuit unit is provided between the input terminal and the output terminal of the primary side coil. When each of the primary side coils releases energy to a secondary side coil, the RC circuit unit absorbs the voltage signal released by the secondary side coil.

[0078] To prevent the RC circuit unit from absorbing too much energy stored in the primary side coil and avoid reducing the output power of the drive, the RC circuit unit includes a first resistor, a first capacitor, and a second diode. The first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output terminal of the second diode. The input terminal of the second diode is connected to the output terminal of the primary side coil.

[0079] To balance the response timings between two adjacent converter modules and adjust the difference in output power, the timings between two adjacent primary coils are balanced by a second resistor, and the second resistor is respectively connected to the output ends of the two adjacent primary coils.

[0080] To prevent the secondary coil from generating a reverse voltage to the primary coil, the output end of the primary coil is unidirectionally conducted by a first diode, the input end of the first diode is connected to the output end of the primary coil, and the output end of the first diode is connected to the first control unit.

[0081] In Embodiment 4, a drive control method is provided for driving and controlling the energy storage and release of two parallel primary coils. In this embodiment, two primary coils are used for exemplary illustration. During implementation, the number of primary coils can be selected according to specific product requirements and actual working conditions. For example, the drive control can be performed on three parallel primary coils, or for example, on four or more parallel primary coils.

[0082] Please refer to Figure 4 , the signal flow direction in one of the primary coils T1 is as follows:

[0083] S10: The drive signal is accessed by DC-IN;

[0084] S20: The primary coil T1 is excited and conducted;

[0085] S30: The first diode D1 is unidirectionally conducted;

[0086] S40: The first controller Q1 is conducted;

[0087] S50: The negative electrode GND is conducted;

[0088] S60: The primary coil T1 completes energy storage;

[0089] S70: The first controller Q1 is open-circuited;

[0090] S80: The primary coil T1 releases energy to the secondary coil T0;

[0091] S90: The first diode D1, the first resistor R1, and the first capacitor C1 absorb the reverse spike voltage;

[0092] S100: Completes the drive control of the output power for one cycle.

[0093] Similarly, the signal flow direction in the other primary coil T2 is as follows:

[0094] S11: The drive signal is accessed by DC-IN;

[0095] S21: The primary coil T2 is excited and conducts;

[0096] S31: The first diode D2 conducts unidirectionally;

[0097] S41: The first controller Q2 conducts;

[0098] S51: The negative electrode GND conducts;

[0099] S61: The primary coil T2 completes energy storage;

[0100] S71: The first controller Q2 is open-circuited;

[0101] S81: The primary coil T2 releases energy to the secondary coil T0;

[0102] S91: The first diode D2, the first resistor R2, and the first capacitor C2 absorb the reverse spike voltage;

[0103] S101: Completes the drive control of the output power for one cycle.

[0104] The drive control of the output power for the secondary coil T0 is performed through the primary coils T1 and T2, improving the magnitude of the output power.

[0105] Please refer to Figure 5 , Embodiment 5 provides a drive control device, including:

[0106] A plurality of converter modules 10, each of the converter modules 10 includes a primary coil and a first control unit, the output end of the primary coil is connected to the first control unit, the input end of the primary coil is used to access a drive signal, and two adjacent converter modules 10 are connected in parallel;

[0107] An input module, the input module is used to output the drive signal, and the output end of the input module is connected to the input end of the primary coil; and

[0108] An output module 20, the output module includes a secondary coil, and each of the primary coils is matched with the secondary coil. When drive of the output power is required, the input end of the primary coil accesses the drive signal through the input module, the first control unit controls the output end of the primary coil to conduct, and when the primary coil completes energy storage, the first control unit controls the output end of the primary coil to be open-circuited. At this time, the magnetic induction intensity of the primary coil changes, thereby exciting the secondary coil and completing energy conversion. By the way of connecting multiple primary coils in parallel, more energy can be stored, and thus the purpose of increasing the output power of the secondary coil can be achieved without adding redundant components.

[0109] The above embodiments are only illustrative of the principles and effects of the present invention and are not intended to limit the present invention. Any person familiar with this technology can modify or change the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by those with ordinary knowledge in the technical field without departing from the spirit and technical ideas disclosed by the present invention should still be covered by the claims of the present invention.

Claims

1. A drive control circuit, characterized in that, it includes: a plurality of converter modules, each of the converter modules includes a primary coil and a first control unit, the output end of the primary coil is connected to the first control unit, the input end of the primary coil is used to access a drive signal, and two adjacent converter modules are connected in parallel; and an output module, the output module includes a secondary coil, and each of the primary coils is matched with the secondary coil; an RC circuit unit is provided between the input end and the output end of the primary coil, the RC circuit unit includes a first resistor, a first capacitor and a second diode, the first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output end of the second diode, and the input end of the second diode is connected to the output end of the primary coil; the drive control circuit further includes a second resistor, and the second resistor is respectively connected to the output ends of two adjacent primary coils.

2. The drive control circuit according to claim 1, characterized in that, the converter module further includes a first diode, the input end of the first diode is connected to the output end of the primary coil, and the output end of the first diode is connected to the first control unit.

3. The drive control circuit according to claim 1, characterized in that, the first control unit includes one of the following: a field effect transistor or a relay.

4. The drive control circuit according to claim 1, characterized in that, the output module further includes a third diode and a second capacitor, the input end of the third diode is connected to the secondary coil, the output end of the third diode is connected to the output end of the output module, and the second capacitor is respectively connected to the output end of the third diode and the ground wire of the output module.

5. The drive control circuit according to claim 1 or 3, characterized in that, the first control unit includes a signal input end, a signal output end and a signal control end, the signal input end is connected to the output end of the secondary coil, the signal output end is connected to the ground wire of the converter module, and the signal control end is used to receive a control signal.

6. The drive control circuit according to claim 5, characterized in that, the converter module further includes a second control unit, the second control unit includes a control signal input end, a third resistor and a fourth diode, the third resistor is respectively connected in series with each of the signal control ends, the input end of the fourth diode is connected to each of the signal control ends, and the output end of the fourth diode is connected to the control signal input end.

7. A drive control method, characterized in that, it includes: access a drive signal to the input ends of a plurality of primary coils and store energy for the primary coils, wherein, two adjacent primary coils are connected in parallel; open the output ends of each of the primary coils; each of the primary coils releases energy to a secondary coil to complete the drive control of the output power for one cycle. An RC circuit unit is provided between the input end and the output end of the primary coil. When each of the primary coils releases energy to a secondary coil, the RC circuit unit absorbs the voltage signal released by the secondary coil. The RC circuit unit includes a first resistor, a first capacitor, and a second diode. The first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output end of the second diode. The input end of the second diode is connected to the output end of the primary coil. The timing between two adjacent primary coils is balanced by a second resistor, and the second resistor is respectively connected to the output ends of the two adjacent primary coils.

8. The drive control method according to claim 7, characterized in that, The output ends of the primary coils are controlled to be conductive or non-conductive by a first control unit.

9. The drive control method according to claim 8, characterized in that, The first control unit includes one of the following: a field effect transistor or a relay.

10. The drive control method according to claim 8, characterized in that, The first control unit includes a signal input end, a signal output end, and a signal control end. The signal input end is connected to the output end of the secondary coil, the signal output end is connected to the ground wire of a converter module, and the signal control end is used to receive a control signal.

11. The drive control method according to claim 10, characterized in that, The control signal is generated and the signal control end is controlled by a second control unit. The second control unit includes a control signal input end, a third resistor, and a fourth diode. The third resistor is respectively connected in series with each signal control end. The input end of the fourth diode is connected to each signal control end, and the output end of the fourth diode is connected to the control signal input end.

12. The drive control method according to claim 8, characterized in that, The output end of the primary coil is unidirectionally conducted by a first diode. The input end of the first diode is connected to the output end of the primary coil, and the output end of the first diode is connected to the first control unit.

13. A drive control device, characterized in that, comprising: A plurality of converter modules, each of the converter modules includes a primary coil and a first control unit. The output end of the primary coil is connected to the first control unit. The input end of the primary coil is used to access a drive signal, and two adjacent converter modules are connected in parallel; An RC circuit unit is provided between the input end and the output end of the primary coil. When each of the primary coils releases energy to a secondary coil, the RC circuit unit absorbs the voltage signal released by the secondary coil. The RC circuit unit includes a first resistor, a first capacitor, and a second diode. The first resistor and the first capacitor are connected in parallel, and both the first resistor and the first capacitor are connected in series with the output end of the second diode. The input end of the second diode is connected to the output end of the primary coil. A second resistor is used to balance the timing between two adjacent primary coils, and the second resistor is respectively connected to the output ends of two adjacent primary coils; An input module for outputting the drive signal, and the output end of the input module is connected to the input end of the primary coil; and An output module including a secondary coil, and each primary coil is matched with the secondary coil.

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