CN218276182U - Power module and electronic equipment - Google Patents
Power module and electronic equipment Download PDFInfo
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- CN218276182U CN218276182U CN202221878421.0U CN202221878421U CN218276182U CN 218276182 U CN218276182 U CN 218276182U CN 202221878421 U CN202221878421 U CN 202221878421U CN 218276182 U CN218276182 U CN 218276182U
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Abstract
The utility model provides a power module and electronic equipment. The power supply module comprises a first power supply module, a second power supply module, a control module, a first MOS (metal oxide semiconductor) tube and a second MOS tube, wherein the first MOS tube, the second MOS tube and the second power supply module form a current loop; when the second power supply module works, the first MOS tube and the second MOS tube are controlled to be conducted, and second direct-current voltage is provided through the second power supply module. Above-mentioned power module can keep apart battery supply circuit and power supply circuit, gets into power supply circuit through concatenating of circuit backward flow when preventing battery powered, in addition, prevents that the power from directly charging for the battery through concatenating of circuit to influence battery charging circuit and charge for the battery, realized power supply and battery powered's mutual interference of preventing.
Description
Technical Field
The utility model relates to a power technical field especially relates to a power module and electronic equipment.
Background
An Uninterruptible Power Supply (UPS) is a system device that connects a battery (mostly a lead-acid maintenance-free battery) with a host and converts direct current into commercial Power through a module circuit such as a host inverter. The power supply device is mainly used for providing stable and uninterrupted power supply for a single computer, a computer network system or other power electronic equipment such as an electromagnetic valve, a pressure transmitter and the like.
When the commercial power input is normal, the UPS supplies the commercial power to the load for use after stabilizing the voltage, and the UPS is an alternating current type voltage stabilizer and also charges the battery in the machine; when the commercial power is interrupted (power failure in accident), the UPS immediately supplies the direct current electric energy of the battery to the load by a method of switching and converting the inverter to continuously supply 220V alternating current to the load, so that the load keeps normal work and the software and hardware of the load are protected from being damaged. UPS devices typically provide protection against either excessive voltage or insufficient voltage.
When the commercial power works normally (the input is normal), the commercial power input power supply and the commercial power charge the battery in the machine can interfere with each other, the battery power supply flows backwards to interfere the commercial power supply to cause the damage of the device, and when the commercial power input power supply voltage is unstable, the problems of maximum power selection and the like exist.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a power module and electronic equipment can keep apart battery supply circuit and power supply circuit, gets into power supply circuit through concatenating of circuit when preventing battery powered, in addition, prevents that the power from passing through concatenating of circuit and directly charging for the battery to influence battery charging circuit and charge for the battery, realized the mutual interference of preventing of mains operated and battery operated.
In a first aspect, an embodiment of the present invention provides a power module, which includes a first power module, a second power module, a control module, and a first MOS transistor and a second MOS transistor, the first MOS transistor and the second power module forming a current loop, wherein,
the first power supply module is used for rectifying the alternating-current voltage and then outputting a first direct-current voltage;
the second power supply module is used for outputting a second direct current voltage through a battery;
when the first power module and the second power module work simultaneously, the first MOS tube and the second MOS tube are controlled to be switched off, and the first power module provides the first direct current voltage; when the second power supply module works, the first MOS tube and the second MOS tube are controlled to be conducted, and the second direct current voltage is provided through the second power supply module.
The embodiment of the utility model provides an in, first power module is used for the first DC voltage of power output, and second power module is used for battery output second DC voltage, through the turn-off and switch on of the first MOS pipe of control and second MOS pipe to keep apart battery powered and mains operated, realized mains operated and battery powered's mutual interference of preventing.
In a first possible implementation manner, the power module further includes a charging module, and the charging module is connected to the second power module and is configured to charge the second power module when the first power module operates.
The embodiment of the utility model provides an in, the module of charging includes battery charging circuit for when power during operation, charge for the battery through battery charging circuit, prevent that the power from passing through concatenating of circuit directly charging for the battery.
In a second possible implementation manner, the power module further includes a power selection module, where the power selection module is coupled to the first power module and the second power module, respectively, and is configured to select the first power module or the second power module to supply power according to the power of the first power module and the power of the second power module.
The embodiment of the utility model provides an in, when the first direct current voltage unstability of first power module output, select one of them (first power module or second power module) to supply power according to the power of first power module and the power of second power module through power selection module, solved the problem of maximum power selection.
In a third possible implementation manner, an output end of the control module is connected to a gate of the first MOS transistor and a gate of the second MOS transistor, a source of the first MOS transistor is connected to a source of the second MOS transistor, a drain of the first MOS transistor is connected to the output end of the power module, and a drain of the second MOS transistor is connected to the second power module.
The embodiment of the utility model provides an in, with first MOS pipe and second MOS union coupling, utilize the inside body diode of first MOS pipe and second MOS pipe, keep apart battery supply circuit and power supply circuit respectively.
In a fourth possible implementation manner, the control module includes a first resistor, a second resistor, a third resistor, a first diode, a second diode, a third diode, a triode, and a third MOS transistor, one end of the first resistor is connected to the second power module, the other end of the first resistor is connected to one end of the second resistor and the collector of the triode, the other end of the second resistor is connected to the cathode of the third diode and the gate of the third MOS transistor, the anode of the third diode is connected to the emitter of the triode and the source of the third MOS transistor, the anode of the first diode is connected to the first power module, the cathode of the first diode is connected to the cathode of the second diode, the anode of the second diode is connected to the base of the triode, the anode of the third diode is grounded, and the drain of the third MOS transistor is connected to the output end of the control module.
In a fifth possible implementation manner, the control module further includes an isolation module, an input end of the isolation module is connected to the second power module, and an output end of the isolation module is connected to an output end of the control module, so as to isolate the second power module from supplying power when the first power module and the second power module operate simultaneously.
In a sixth possible implementation manner, the control module further includes a fourth resistor and a fifth resistor, where one end of the fourth resistor is connected to the output end of the control module, the other end of the fourth resistor is connected to one end of the fifth resistor, the gate of the first MOS transistor and the gate of the second MOS transistor, and the other end of the fifth resistor is connected to the source of the first MOS transistor and the source of the second MOS transistor.
In a seventh possible implementation manner, the power module further includes a conversion module, where the conversion module is configured to convert the first direct current voltage output by the first power module into a supply voltage, an input end of the conversion module is connected to the first power module, an output end of the conversion module is connected to an output end of the power module, and the conversion module includes a fourth diode and a fifth diode, where the first power module is connected to an anode of the fourth diode and an anode of the fifth diode, and an output end of the power module is connected to a cathode of the fourth diode and a cathode of the fifth diode.
The embodiment of the utility model provides an in, conversion module is used for converting the 24V first direct current voltage of first power module output into the 12V supply voltage that the back level board card needs, prevents that the too big damage to the back level board card that causes of first direct current voltage of first power module output.
In an eighth possible implementation manner, the first MOS transistor and the second MOS transistor are PMOS transistors.
In a ninth possible implementation manner, the third MOS transistor is an NMOS transistor.
In a second aspect, an embodiment of the present invention provides an electronic device, which includes the power module provided in any one of the possible implementation manners of the first aspect to the first aspect.
It should be understood that the implementation and advantages of the above-described aspects or any of the possible embodiments of the present invention may be mutually referenced.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an electronic device provided by the present invention;
fig. 2 is another schematic structural diagram of the electronic device provided by the present invention;
fig. 3 is a schematic structural diagram of a power module according to the present invention;
fig. 4 is another schematic structural diagram of the power module provided by the present invention;
fig. 5 is a schematic diagram of a first power module portion detection circuit provided by the present invention;
fig. 6 is a schematic diagram of a second power module portion detection circuit provided by the present invention;
fig. 7 is a schematic circuit diagram of a power module according to the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, of the embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The utility model provides an electronic equipment is used for changing 220V alternating current or 110V alternating current into the electronic equipment that is applicable to the different grade type or the voltage and the electric current of self. The utility model provides an electronic equipment can be the electronic equipment's such as different grade types of smart mobile phone, panel computer, notebook computer, desktop computer, intelligent audio amplifier, intelligent wrist-watch and wearable equipment power adapter (adaptor), also can be the electronic equipment of different grade types such as smart mobile phone, panel computer, notebook computer, desktop computer, intelligent audio amplifier, intelligent wrist-watch and wearable equipment. The utility model provides an electronic equipment can be electric motorcycle car, electric automobile etc. electric vehicle's the electric pile that fills, also can be electric motorcycle car, electric automobile etc. electric vehicle.
Referring to fig. 1, fig. 1 is a schematic structural diagram of an electronic device according to the present invention. As shown in fig. 1, the electronic device 10 includes a power module 11 and a load 12. The power module 11 receives an input voltage V1 provided by an input power 13 and provides an output voltage V2 to power the load 12. The utility model discloses in, electronic equipment 10 can be electronic equipment such as smart mobile phone, panel computer, notebook computer, desktop computer, intelligent audio amplifier, intelligent wrist-watch and wearable equipment.
Please refer to fig. 2, fig. 2 is another schematic structural diagram of the electronic device provided by the present invention. As shown in fig. 2, the electronic device 10 includes a power module 11. The power module 11 receives an input voltage V1 provided by an input power 13 and provides an output voltage V2 to power a load 12. In the embodiment of the present invention, the electronic device 10 may be an adapter, a charging pile, or the like. In general, an adapter (adapter) may also be referred to as a charger (charger), a charging head, a switch power supply (switch power supply), a power converter (power converter), or the like.
In an embodiment, the power module 11 may include an input power 13, and the input power 13 may include a first power module and a second power module, the first power module is configured to rectify the ac voltage and output a first dc voltage, and the second power module is configured to output a second dc voltage through a battery. In one embodiment, the power module 11 can provide a plurality of output voltages V2 to power the load 12.
Please refer to fig. 3, fig. 3 is a schematic structural diagram of a power module according to the present invention. As shown in fig. 3, the power module 11 includes a first power module 111, a second power module 112, a control module 113, a first MOS transistor 114, and a second MOS transistor 115.
The first power module 111 is configured to rectify the ac voltage V1 and output a first dc voltage V21.
The second power module 112 is used for outputting a second dc voltage V22 through a battery.
The input end of the control module 113 is connected to the first power module 111 and the second power module 112, the output end of the control module 113 is connected to the first MOS transistor 114 and the second MOS transistor 115, and when the first power module 111 and the second power module 112 simultaneously operate, the control module controls the first MOS transistor 114 and the second MOS transistor 115 to be turned off, and provides a first direct current voltage V21 to a load through the first power module 111; when the second power module 112 works, the first MOS transistor 114 and the second MOS transistor 115 are controlled to be turned on, and the second power module 112 provides the second dc voltage V22 to the load.
In the power module shown in fig. 3, the first power module may be a power adapter, the first power module rectifies 220V ac voltage V1 and outputs 24V first dc voltage, the second power module may be a battery terminal, the second power module outputs second dc voltage (10V-16.8V) through a battery, and the first power module may also output 24V first dc voltage through a vehicle-mounted power supply (19.8V-32V). Under the condition that the first power supply module and the second power supply module work simultaneously, the control module can control the first MOS tube and the second MOS tube to be switched off, and the first power supply module (commercial alternating current or vehicle-mounted power supply) supplies power to a rear-stage board card (load); under the condition that the first power supply module is not available and only the second power supply module works, the control module can control the first MOS tube and the second MOS tube to be conducted, and the second power supply module (battery) supplies power for the rear-stage board card (load).
Referring to fig. 4, fig. 4 is another schematic structural diagram of the power module according to the present invention, and the power module shown in fig. 4 further includes a charging module 116, a power selection module 117, and a conversion module 118.
The input end of the charging module 116 is connected to the first power module 111, and the output end of the charging module 116 is connected to the second power module, so as to charge the second power module 112 when the first power module 111 works. The charging module 116 includes a battery charging circuit, and when the first power module (commercial ac or vehicle power (220V)) is working, the second power module (battery) is charged by the battery charging circuit.
The power selection module 117 includes a first detection unit 1171, a second detection unit 1172, and an analog CPU board. The first detection unit 1171 includes a first input current detection and a first input voltage detection, wherein the first input current detection is used for detecting the current input by the first power module 111, and the first input voltage detection is used for detecting the voltage input by the first power module 111; the second detection unit 1172 includes a second input current detection for detecting the current input from the second power module 112 and a second input voltage detection for detecting the voltage input from the second power module 112; the analog CPU board is configured to select the first power module 111 or the second power module 112 for power supply according to the power of the first power module 111 (the current and the voltage detected by the first detection unit 1171) and the power of the second power module 112 (the current and the voltage detected by the second detection unit 1172), that is, to select the maximum power. The simulation CPU board card can also be used for UPS regulation and control and battery charging control.
The conversion module 118 is configured to convert the first direct-current voltage output by the first power module 111 into a supply voltage. For example, the first power module may be a power adapter, which is used to convert ac power of 220V into dc power of 24V, and the dc power of 24V is converted into a 12V power supply voltage capable of supplying power to a subsequent board card through the conversion module 118.
The load 12 may include a back-end board power supply and power conversion.
In the power module shown in fig. 4, when the first power module is operated, the first power module (commercial alternating current or vehicle power) charges the second power module (battery) through the battery charging circuit in the charging module; under the condition that the first power module and the second power module work simultaneously, when the first direct current voltage output by the first power module is unstable, the first detection unit and the second detection unit in the power selection module respectively detect the current and the voltage input by the first power module (commercial alternating current or a vehicle-mounted power supply) and the current and the voltage input by the second power module (a battery), and transmit the detection result into the analog CPU board card in a signal converging mode to perform maximum power point tracking, so that the first power module or the second power module is selected to supply power. Under the condition of battery power supply, the simulation CPU integrated circuit board can real time monitoring battery data, prevents that the battery from putting excessively, shows the integrated circuit board can the alarm of popping the window when the battery is under-voltage.
Wherein, maximum power point tracking adopts resistance bleeder circuit to sample, and through the voltage to first power module and the voltage of second power module samples, the analog value of collection is imported the simulation Central Processing Unit (CPU) board through the backplate, as shown in fig. 5, fig. 5 is the utility model provides a schematic diagram of the partial detection circuitry of first power module detects the current and holds the input through VIN, behind Vi _ DET end output power sampling signal, again with power sampling signal through inductance L11, exports the AD sample connection Vi-Out of simulation CPU board. As shown in FIG. 6, FIG. 6 is a schematic diagram of a partial detection circuit of the second power module, which detects the input of current through BAT + terminal, and outputs the battery sampling signal to AD sampling port BAT-Out of the analog CPU board through inductor L13 after outputting the battery sampling signal at BAT _ DET terminal. Interference signals are filtered in the transmission process, and finally pure voltage signals (power supply sampling signals and battery sampling signals) are obtained and input into the AD sampling port. And then, determining the current magnitude and direction of the first power module and the second power module by judging the positive and negative of the voltages Vsense + and Vsense-at two ends of the sampling resistor, and transmitting the current magnitude and direction to the analog CPU board through communication between chips. Wherein, the current sampling adopts a special current acquisition chip. And finally, the analog CPU board processes the acquired current and voltage data through software to realize the selection of the maximum power.
Referring to fig. 7, fig. 7 is a circuit schematic diagram of a power module according to the present invention, wherein the power module includes a first power module 111, a second power module 112, a control module 113, a first MOS transistor 114, a second MOS transistor 115, a conversion module 118 and an isolation module 119.
In an embodiment, the output terminal of the control module 113 is connected to the gate of the first MOS transistor Q1 and the gate of the second MOS transistor Q2, the source of the first MOS transistor Q1 is connected to the source of the second MOS transistor Q2, the drain of the first MOS transistor Q1 is connected to the output terminal (load) of the power module, and the drain of the second MOS transistor Q2 is connected to the second power module 112.
In one embodiment, the control module 113 includes a first resistor R1, a second resistor R2, a third resistor R3, a first diode V1, a second diode V2, a third diode V3, a transistor V6, and a third MOS transistor Q3, one end of the first resistor R1 is connected to the second power module, the other end of the first resistor R1 is connected to one end of the second resistor R2 and a collector of the transistor V6, the other end of the second resistor R2 is connected to a cathode of the third diode V3 and a gate of the third MOS transistor Q3, an anode of the third diode V3 is connected to an emitter of the transistor V6 and a source of the third MOS transistor Q3, an anode of the first diode V1 is connected to the first power module, a cathode of the first diode V1 is connected to a cathode of the second diode V2, an anode of the second diode V2 is connected to a base of the transistor V6, an anode of the third diode V3 is connected to the ground, and a drain of the first MOS transistor Q3 is connected to the control output terminal.
In an embodiment, the control module 113 further includes an isolation module 119, an input end of the isolation module is connected to the second power module, and an output end of the isolation module is connected to an output end of the control module, so as to isolate the second power module from supplying power when the first power module and the second power module operate simultaneously.
In an embodiment, the control module 113 further includes a fourth resistor R4 and a fifth resistor R5, wherein one end of the fourth resistor R4 is connected to the output end of the control module, the other end of the fourth resistor R4 is connected to one end of the fifth resistor R5, the gate of the first MOS transistor Q1 and the gate of the second MOS transistor Q2, and the other end of the fifth resistor R5 is connected to the source of the first MOS transistor Q1 and the source of the second MOS transistor Q2.
In an embodiment, the power module further includes a conversion module 118, the conversion module is configured to convert the first direct current voltage output by the first power module into a power supply voltage, an input end of the conversion module is connected to the first power module, an output end of the conversion module is connected to an output end of the power module, the conversion module includes a fourth diode V4 and a fifth diode V5, wherein the first power module is connected to an anode of the fourth diode V4 and an anode of the fifth diode V5, and an output end of the power module is connected to a cathode of the fourth diode V4 and a cathode of the fifth diode V5.
In one embodiment, the first MOS transistor Q1 and the second MOS transistor Q2 are PMOS transistors.
In one embodiment, the third MOS transistor Q3 is an NMOS transistor.
In the circuit structure shown in fig. 7, when the first power module (+ 24V) and the second power module (BAT +) operate simultaneously, +24V and BAT + are powered on simultaneously, after passing through the transistor V6, the transistor V6 pulls down the voltage of BAT +, which causes the gate voltage of the third MOS transistor Q3 to be pulled down, Q3 is not conducted, the diodes V7 and Q3 in the isolation module 119 cannot form a loop, the pins 1 and 2 of the photo relay RL are not conducted, no current passes through the fourth resistor R4 and the fifth resistor R5, and the first MOS transistor Q1 and the second MOS transistor Q2 are not conducted, so BAT + cannot supply power (+ 12V) to the rear board card, +24V is converted into a supply voltage of +12V after passing through the circuit structure corresponding to the conversion module 118, and supplies power to the rear board card. When the first power supply module does not work and the second power supply module works, at the moment, the +24V is not electrified, the BAT + is electrified, the grid voltage of the Q3 is increased, the Q3 is conducted, the diode V7 and the Q3 in the isolation module 119 form a loop, the pins 1 and 2 of the photoelectric relay RL are conducted, the current passing through the linear power supply chip U1 from the BAT + passes through the diode V7 and passes through the Q3, the R4 and the R5, at the moment, the grids of the Q1 and the Q2 are at low voltage, the Q1 and the Q2 are conducted, and the BAT + is supplied with power for the rear-stage board card through the Q2 and the Q1.
The embodiment of the utility model provides an in, this power module's circuit adopts two PMOS pipes (first MOS pipe and second MOS pipe) to the union coupling, utilize the inside body diode of first MOS pipe and second MOD, keep apart battery powered and mains operated respectively, through concatenating of circuit when preventing battery powered and flow backward and get into the mains operated circuit, in addition, prevent that the power from passing through concatenating of circuit and directly charging for the battery, thereby influence battery charging circuit and charge for the battery, the mutual interference of preventing of mains operated and battery powered has been realized. Under the condition that no power supply works, the simulation CPU board can turn off the corresponding board card, start an uninterruptible power supply (battery power supply), and protect a 12V output circuit while realizing the power supply of the uninterruptible power supply. In addition, the circuit of the power supply module is combined with a battery charging circuit and a sampling circuit (a circuit structure corresponding to the power supply selection module), so that the maximum power selection can be realized.
The content downloading method, the related device and the system provided by the embodiment of the present invention are introduced in detail, and the principle and the implementation of the present invention are explained by applying a specific example, and the description of the above embodiment is only used to help understanding the method and the core idea of the present invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be changes in the specific embodiments and the application range, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
Claims (11)
1. A power supply module is characterized in that the power supply module comprises a first power supply module, a second power supply module, a control module, a first MOS (metal oxide semiconductor) tube and a second MOS tube, wherein the first MOS tube, the second MOS tube and the second power supply module form a current loop,
the first power supply module is used for rectifying the alternating-current voltage and then outputting a first direct-current voltage;
the second power supply module is used for outputting a second direct-current voltage through a battery;
the input end of the control module is connected with the first power supply module and the second power supply module, the output end of the control module is connected with the first MOS tube and the second MOS tube, when the first power supply module and the second power supply module work simultaneously, the first MOS tube and the second MOS tube are controlled to be switched off, and the first power supply module provides the first direct current voltage; when the second power supply module works, the first MOS tube and the second MOS tube are controlled to be conducted, and the second direct-current voltage is provided through the second power supply module.
2. The power module as claimed in claim 1, further comprising a charging module connected to the second power module for charging the second power module when the first power module is operated.
3. The power module as claimed in claim 1, further comprising a power selection module coupled to the first power module and the second power module respectively, for selecting the first power module or the second power module to supply power according to the power of the first power module and the power of the second power module.
4. The power module as claimed in claim 1, wherein the output terminal of the control module is connected to the gate of the first MOS transistor and the gate of the second MOS transistor, the source of the first MOS transistor is connected to the source of the second MOS transistor, the drain of the first MOS transistor is connected to the output terminal of the power module, and the drain of the second MOS transistor is connected to the second power module.
5. The power module as claimed in claim 1, wherein the control module includes a first resistor, a second resistor, a third resistor, a first diode, a second diode, a third diode, a transistor, and a third MOS transistor, one end of the first resistor is connected to the second power module, the other end of the first resistor is connected to one end of the second resistor and a collector of the transistor, the other end of the second resistor is connected to a cathode of the third diode and a gate of the third MOS transistor, an anode of the third diode is connected to an emitter of the transistor and a source of the third MOS transistor, an anode of the first diode is connected to the first power module, a cathode of the first diode is connected to a cathode of the second diode, an anode of the second diode is connected to a base of the transistor, an anode of the third diode is grounded, and a drain of the third MOS transistor is connected to an output terminal of the control module.
6. The power module of claim 5, wherein the control module further comprises an isolation module, an input of the isolation module is connected to the second power module, and an output of the isolation module is connected to an output of the control module, for isolating the second power module from supplying power when the first power module and the second power module are simultaneously operated.
7. The power module of claim 5, wherein the control module further comprises a fourth resistor and a fifth resistor, wherein one end of the fourth resistor is connected to the output terminal of the control module, the other end of the fourth resistor is connected to one end of the fifth resistor, the gate of the first MOS transistor and the gate of the second MOS transistor, and the other end of the fifth resistor is connected to the source of the first MOS transistor and the source of the second MOS transistor.
8. The power module of claim 1, further comprising a conversion module for converting the first direct current voltage outputted by the first power module into a supply voltage, wherein an input terminal of the conversion module is connected to the first power module, and an output terminal of the conversion module is connected to an output terminal of the power module, and the conversion module comprises a fourth diode and a fifth diode, wherein the first power module is connected to an anode of the fourth diode and an anode of the fifth diode, and the output terminal of the power module is connected to a cathode of the fourth diode and a cathode of the fifth diode.
9. The power module of any one of claims 1-8, wherein the first MOS transistor and the second MOS transistor are PMOS transistors.
10. The power module as claimed in any one of claims 5-7, wherein the third MOS transistor is an NMOS transistor.
11. An electronic device, characterized in that the device comprises a power supply module according to any one of claims 1-10.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878421.0U CN218276182U (en) | 2022-07-20 | 2022-07-20 | Power module and electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221878421.0U CN218276182U (en) | 2022-07-20 | 2022-07-20 | Power module and electronic equipment |
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| CN218276182U true CN218276182U (en) | 2023-01-10 |
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