CN219535701U - Vehicle-mounted redundant power supply and electric automobile - Google Patents
Vehicle-mounted redundant power supply and electric automobile Download PDFInfo
- Publication number
- CN219535701U CN219535701U CN202320353070.XU CN202320353070U CN219535701U CN 219535701 U CN219535701 U CN 219535701U CN 202320353070 U CN202320353070 U CN 202320353070U CN 219535701 U CN219535701 U CN 219535701U
- Authority
- CN
- China
- Prior art keywords
- circuit
- input
- output
- power supply
- vehicle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Landscapes
- Rectifiers (AREA)
Abstract
The utility model discloses a vehicle-mounted redundant power supply and an electric automobile, wherein the vehicle-mounted redundant power supply comprises: the PWM signal input end is used for accessing a PWM signal; the input filter circuit is used for outputting the accessed alternating current after filtering; the input end of the rectifying circuit is connected with the output end of the input filter circuit, and the rectifying circuit is used for rectifying the alternating current output by the filter circuit into direct current and then outputting the direct current; and the controlled end of the PFC main circuit is connected with the PWM signal input end, the input end of the PFC main circuit is connected with the output end of the rectifying circuit, and the PFC main circuit is used for correcting the direct current output by the rectifying circuit according to the received PWM signal and outputting the corrected direct current. The technical scheme of the utility model can improve the working efficiency of the vehicle-mounted redundant power supply.
Description
Technical Field
The utility model relates to the technical field of power supplies, in particular to a vehicle-mounted redundant power supply and an electric automobile.
Background
At present, in order to ensure stable and uninterrupted operation of a rear-stage load in an automobile power supply system, the power supply system has higher requirements, and in general, a plurality of sets of automobile-mounted redundant power supplies are arranged in the power supply system of the automobile to supply power for the rear-stage load together, and when one of the automobile-mounted redundant power supplies is damaged, the rest of the automobile-mounted redundant power supplies can keep in a power supply state.
However, the existing vehicle-mounted redundant power supply is usually connected with direct current charging voltage to charge the battery, and along with gradual diversification of charging scenes, the situation that the vehicle-mounted redundant power supply is connected with alternating current charging voltage exists, but when the existing vehicle-mounted redundant power supply is connected with the alternating current charging voltage, the working efficiency is low, and heating is serious.
Disclosure of Invention
The utility model mainly aims to provide a vehicle-mounted redundant power supply, which aims to solve the problem of low working efficiency of the vehicle-mounted redundant power supply
In order to achieve the above object, the present utility model provides a vehicle-mounted redundant power supply, including:
the PWM signal input end is used for accessing a PWM signal;
the input filter circuit is used for outputting the accessed alternating current after filtering;
the input end of the rectifying circuit is connected with the output end of the input filter circuit, and the rectifying circuit is used for rectifying the alternating current output by the filter circuit into direct current and then outputting the direct current; the method comprises the steps of,
the PFC main circuit is used for correcting the power factor of direct current output by the rectifying circuit according to the received PWM signal.
Optionally, the PFC main circuit includes: the circuit comprises a capacitor, an inductor, a resistor, a switching device, a first diode, a second diode and a voltage stabilizing diode;
the first end and the second end of the capacitor are respectively connected with the rectifying circuit, the first end of the capacitor is also connected with the anode of the second diode through the inductor, the first diode is connected with the inductor in parallel, the cathode of the second diode is connected with the output end of the PFC main circuit, the second end of the capacitor is also connected with the output end of the switching device, the output end of the switching device is also grounded, the input end of the switching device is connected with the anode of the second diode, the controlled end of the switching device is used for accessing PWM signals, the two ends of the resistor are respectively connected with the controlled end of the switching device and the ground, and the voltage stabilizing diode is connected with the resistor in parallel.
Optionally, the input filter circuit includes:
and the input end of the EMI filter circuit is connected with alternating current, and the output end of the EMI filter circuit is connected with the output end of the input filter circuit.
Optionally, the vehicle-mounted redundant power supply further includes:
the input protection circuit, the input of input protection circuit is used for switching in the alternating current, the output of input protection circuit with input filter circuit's input is connected, input protection circuit is used for stopping outputting alternating current to when the alternating current of switching in is too big input filter circuit.
Optionally, the vehicle-mounted redundant power supply further includes:
and the input end of the output filter circuit is connected with the output of the PFC main circuit, and the output filter circuit is used for outputting the direct current output by the PFC main circuit after filtering.
Optionally, the vehicle-mounted redundant power supply further includes:
and the PFC control circuit is connected with the PWM signal input end and is used for outputting a PWM signal to the PFC main circuit through the PWM signal input end.
Optionally, the vehicle-mounted redundant power supply further includes:
the detection end of the input voltage detection circuit is connected with the input end of the PFC main circuit, and the output end of the input voltage detection circuit is connected with the PFC control circuit;
the input voltage detection circuit is used for detecting the input voltage of the PFC main circuit and outputting an input voltage detection signal to the PFC control circuit, so that the PFC control circuit outputs a PWM signal with corresponding duty ratio to the PFC main circuit according to the accessed input voltage detection signal.
Optionally, the vehicle-mounted redundant power supply further includes:
the detection end of the output voltage detection circuit is connected with the output end of the PFC main circuit, and the output end of the output voltage detection circuit is connected with the PFC control circuit;
the output voltage detection circuit is used for detecting the output voltage of the PFC main circuit and outputting an output voltage detection signal to the PFC control circuit, so that the PFC control circuit outputs a PWM signal with corresponding duty ratio to the PFC main circuit according to the accessed output voltage detection signal.
The utility model also provides an electric automobile, which comprises the vehicle-mounted redundant power supply.
Optionally, the electric automobile further includes:
and the output ends of the vehicle-mounted main power supply and the vehicle-mounted redundant power supply are connected with each other.
According to the technical scheme, the input filter circuit, the rectifying circuit and the PFC main circuit are adopted in the vehicle-mounted redundant power supply, so that direct current output by the vehicle-mounted redundant power supply can be more standard, the working efficiency and the output stability of the vehicle-mounted redundant power supply are improved, and the heat productivity of the vehicle-mounted redundant power supply is reduced on the premise that direct current voltages with the same amplitude are output due to higher efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, and it is obvious that the drawings in the following description are only some embodiments of the present utility model, and other drawings may be obtained according to the structures shown in these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic block diagram of an embodiment of a vehicle-mounted redundant power supply of the present utility model;
fig. 2 is a schematic circuit diagram of another embodiment of the vehicle-mounted redundant power supply of the present utility model.
Reference numerals illustrate:
the achievement of the objects, functional features and advantages of the present utility model will be further described with reference to the accompanying drawings, in conjunction with the embodiments.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are only some, but not all embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Furthermore, descriptions such as those referred to as "first," "second," and the like, are provided for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implying an order of magnitude of the indicated technical features in the present disclosure. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions of the embodiments may be combined with each other, but it is necessary to base that the technical solutions can be realized by those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should be considered to be absent and not within the scope of protection claimed in the present utility model.
The utility model provides a vehicle-mounted redundant power supply.
Referring to FIG. 1, in one embodiment, the in-vehicle redundant power supply includes
The PWM signal input end is used for accessing a PWM signal;
the input filter circuit 10 is used for outputting the accessed alternating current after filtering;
the input end of the rectifying circuit 20 is connected with the output end of the input filter circuit 10, and the rectifying circuit 20 is used for rectifying the alternating current output by the filter circuit into direct current and outputting the direct current; the method comprises the steps of,
the input end of the PFC main circuit 30 is connected with the output end of the rectifying circuit 20, and the PFC main circuit 30 is used for correcting the power factor of the direct current output by the rectifying circuit 20 according to the received PWM signal and outputting the corrected direct current.
In this embodiment, the PWM signal input end may be connected to a PFC control circuit in the vehicle-mounted redundant power supply or to a main control unit in the electric vehicle, so as to access a PWM signal output by the PFC control circuit or the main control unit.
The input end of the input filter circuit 10 comprises a first input end and a second input end, and the first input end and the second input end can be connected with a charging gun interface of the electric automobile through a live wire L and a zero wire N respectively. With the gradual diversification of charging scenes, the type of charging voltage output from the charging gun may output an ac charging voltage in addition to a dc charging voltage. Thus, when the charging gun outputs an ac charging voltage, the first input terminal and the second input terminal of the input filter circuit 10 can be connected to ac power transmitted on the live wire and the neutral wire. The input filter circuit 10 is configured to filter at least one of the common mode interference signal and the differential mode interference signal in the connected ac power, and then output the ac power, so as to reduce common mode noise and differential mode noise when the vehicle-mounted redundant power supply works.
The rectifying circuit 20 may be implemented by a rectifier bridge formed by unidirectional conducting devices such as diodes. The input end of the rectifying circuit 20 includes a first input end and a second input end, which are respectively connected with the first output end and the second output end of the input filter circuit 10, so as to access the alternating current output by the input filter circuit 10, and is used for rectifying the alternating current into direct current and outputting the direct current.
PFC main circuit 30 may be constructed from discrete devices and switching devices; the discrete device may include one or more of an inductance device, a capacitance element, a diode device, and a resistance device, and the switching device may be one or more of a triode, a MOS transistor, an IGBT, and an optocoupler, which is not limited herein. The input terminal of the PFC main circuit 30 also includes a first input terminal and a second input terminal, and may be connected to the first output terminal and the second output terminal of the rectifying circuit 20, respectively, so as to be connected to the direct current output by the rectifying circuit 20. The PWM signal may have two level states, i.e., a high level state and a low level state, and the PFC main circuit 30 may switch in the dc power when receiving the PWM signal in one of the level states, so as to output a more standard dc power after being modulated by the discrete device; when receiving the PWM signal in another level state, the output of the direct current is stopped, so that the power factor correction of the direct current is realized. It will be appreciated that the output dc power is more standard, i.e. the higher the operating efficiency of the switching power supply.
Referring to fig. 2, the pfc main circuit 30 includes: the first diode D1, the second diode D2, the fourth inductor L4, the first N-MOS transistor Q1, the first zener diode ZD1 and the fifth resistor R5. The first end of the fourth inductor L4 is connected to the first output of the rectifying circuit 20, and the second end is connected to the anode of the second diode D2; the second diode D2 is a rectifying diode, and the cathode of the second diode D2 may be the first output end of the PFC main circuit 30; the first diode D1 is a starting diode, and an anode and a cathode are respectively connected with a first end and a second end of the fourth inductor L4; the grid electrode of the first N-MOS tube Q1 is used for accessing PWM signals, the drain electrode is connected with the anode of the second diode D2, and the source electrode is grounded; the first zener diode ZD1 is connected between the gate of the first N-MOS and ground; the fifth resistor R5 is a pull-down resistor and is connected in parallel with the first zener diode ZD 1. The first N-MOS transistor Q1 is conducted when receiving a high-level PWM signal, so that the fourth inductor L4 is connected with direct current energy storage; when the PWM signal of low level is received, the fourth inductor L4 is turned off to release energy and output a more standard dc power. In addition, the PFC main circuit 30 may further include a fifth capacitor C5 connected between the first end of the fourth inductor L4 and ground for filtering the ac component to ensure that the fourth inductor L4 is connected with dc power.
According to the technical scheme, the input filter circuit 10, the rectifying circuit 20 and the PFC main circuit 30 are adopted in the vehicle-mounted redundant power supply, so that direct current output by the vehicle-mounted redundant power supply can be more standard, the working efficiency and the output stability of the vehicle-mounted redundant power supply are improved, and the heat productivity of the vehicle-mounted redundant power supply is reduced on the premise that direct current voltages with the same amplitude are output due to higher efficiency.
Referring to fig. 2, in one embodiment, the input filter circuit 10 includes:
and the input end of the EMI filter circuit is connected with the alternating current, the output end of the EMI filter circuit is connected with the output end of the input filter circuit 10, and the EMI filter circuit is used for outputting the connected alternating current after the EMI filter treatment.
The EMI filter circuit may be constructed using inductive devices. The EMI filter circuit is used for preventing the EMI interference from the live wire and the zero wire to the vehicle-mounted redundant power supply by utilizing the characteristic of the inductive load of the inductive device so as to play a role in suppressing the surge and protecting the vehicle-mounted redundant power supply.
Referring to fig. 2, the emi filter circuit may include a first inductor L1, a second inductor L2, and a third inductor L3, wherein the first inductor L1 is a common-mode inductor having a first coil L1A and a second coil L1B for filtering common-mode interference signals; the second inductor L2 and the third inductor L3 are differential mode inductors for filtering differential mode interference signals. The first end of the first coil L1A is connected with the first input end of the input filter circuit 10, the second end of the first coil L1A is connected with the first output end of the input filter circuit 10 through the second inductor L2, the first end of the second coil L1B is connected with the second input end of the input filter circuit 10, and the second end of the second coil L1B is connected with the second output end of the input filter circuit 10 through the third inductor L3.
Optionally, the input filter circuit 10 may further include a first capacitor C1 connected between the first end of the first coil L1A and the first end of the second coil L1B.
Optionally, the EMI filter circuit has a common mode inductance;
the input filter circuit 10 further includes:
the differential mode filter circuit is connected between the first output end and the second output end of the common mode inductor;
the first common mode filter circuit is connected between the first output end of the common mode inductor and the ground;
and the second common mode filter circuit is connected between the second output end of the common mode inductor and the ground.
In this embodiment, the first common mode filter circuit and the second common mode filter circuit may be implemented by using a capacitor device. Referring to fig. 2, the first output terminal and the second output terminal of the common-mode inductor may be the second terminals of the two coils, respectively, and the second terminal of the second coil L1B is also grounded; the differential mode filter circuit may include a second capacitor C2; the first common-mode filter circuit may include a third capacitor C3 for filtering a common-mode interference signal in the output signal of the first coil L1A; the first common-mode filtering circuit may include a fourth inductor L4 for filtering common-mode interference signals in the output signal of the second coil L1B.
Referring to fig. 2, in an embodiment, the on-board redundant power supply further includes:
the input protection circuit 40, the input end of the input protection circuit 40 is used for accessing alternating current, the output end of the input protection circuit 40 is connected with the input end of the input filter circuit 10, and the input protection circuit 40 is used for stopping outputting alternating current to the input filter circuit 10 when the accessed alternating current is overlarge.
The input protection circuit 40 may be implemented using piezoresistors and fuses. The input terminal of the input protection circuit 40 includes a first input terminal and a second input terminal, and the output terminal includes a first output terminal and a second output terminal, where the first input terminal and the second input terminal are respectively connected to the live wire and the neutral wire, and the first output terminal and the second input terminal are respectively connected to the first input terminal and the second input terminal of the input filter module.
Referring to fig. 2, the input protection circuit 40 may include a first input protection branch formed by connecting a first fuse F1 and a first varistor MOV1 in series, a first end of the first input protection branch may be connected to a path between a first input terminal and a first output terminal of the input protection circuit 40, and a second end may be connected to a path between a second input terminal and a second output terminal of the input protection circuit 40. The input protection circuit 40 may further include a second input protection branch formed by connecting a second fuse F2 and a second varistor MOV2 in series, and a third input protection branch formed by connecting a third fuse F3 and a third varistor MOV3 in series, wherein a first end of the second input protection branch may be connected to a path between the first input terminal and the first output terminal of the input protection circuit 40, a first end of the third input protection branch may be connected to a path between the second input terminal and the second output terminal of the input protection circuit 40, and second ends of the second input protection branch and the third input protection branch may be grounded respectively.
Referring to fig. 2, in an embodiment, the on-board redundant power supply further includes:
and an output filter circuit 50, wherein an input end of the output filter circuit 50 is connected with an output of the PFC main circuit 30, and the output filter circuit 50 is configured to filter the direct current output by the PFC main circuit 30 and output the direct current.
The output filter circuit 50 may be implemented using a capacitive device. The output filter current is used for filtering alternating current signals in direct current output by the PFC main circuit 30 so as to ensure the purity of the direct current output by the vehicle-mounted redundant power supply. Referring to fig. 2, the output filter circuit 50 may include a sixth capacitor C6 and a seventh capacitor C7, the sixth capacitor C6 may be connected between the cathode of the second diode and the ground, and the seventh capacitor C7 may be disposed in parallel with the sixth capacitor C6.
Referring to fig. 2, in an embodiment, the on-board redundant power supply further includes:
the PFC control circuit 60, the PFC control circuit 60 is connected to the PWM signal input terminal, and the PFC control circuit 60 is configured to output a PWM signal to the PFC main circuit 30 via the PWM signal input terminal.
The PFC control circuit 60 may be a microprocessor such as an MCU, DSP, or FPGA; alternatively, the device can also be a special main control chip. The PFC control circuit 60 may be pre-integrated with a preset duty cycle and a PWM generation circuit, so that when in operation, the PWM generation circuit is controlled to operate by calling the preset duty cycle, so that the PWM generation circuit may generate a PWM signal having the preset duty cycle and output the PWM signal to the PFC main circuit 30. Referring to fig. 2, pfc control circuit 60 may be a UC3845PWM controller.
Optionally, the vehicle-mounted redundant power supply further includes:
an input voltage detection circuit 70, wherein a detection end of the input voltage detection circuit 70 is connected with an input end of the PFC main circuit 30, and an output end of the input voltage detection circuit 70 is connected with the PFC control circuit 60;
the input voltage detection circuit 70 is configured to detect an input voltage of the PFC main circuit 30, and output an input voltage detection signal to the PFC control circuit 60, so that the PFC control circuit 60 outputs a PWM signal with a corresponding duty ratio to the PFC main circuit 30 according to the input voltage detection signal.
The input voltage detection circuit 70 may be implemented by a voltage dividing circuit constituted by a resistor device. Referring to fig. 2, the input voltage detection circuit 70 may include a first resistor R1 and a second resistor R2 connected in series, and the input voltage detection circuit 70 may use a principle of resistor voltage division to attenuate the input voltage of the PFC main circuit 30 as an input voltage detection signal, and output the input voltage detection signal to the PFC control circuit 60.
The PFC control circuit 60 may convert the voltage detection signal into a digital signal, and then analyze and calculate the digital signal to determine the input voltage of the PFC main circuit 30, and may compare the input voltage of the PFC main circuit 30 with a preset input voltage threshold, and may correspondingly adjust the duty ratio of the PWM signal according to the comparison result. The method comprises the following steps: when the comparison result is smaller than the preset value, correspondingly heightening the duty ratio of the PWM signal; and when the comparison result is larger than the preset value, correspondingly reducing the duty ratio of the PWM signal. Thus, the PFC main circuit 30 can maintain the output stability of the dc voltage according to the PWM signal after the duty ratio is adjusted, so as to implement the input negative feedback adjustment of the PFC main circuit 30.
Optionally, the vehicle-mounted redundant power supply further includes:
an output voltage detection circuit 80, wherein a detection end of the output voltage detection circuit 80 is connected with an output end of the PFC main circuit 30, and an output end of the output voltage detection circuit 80 is connected with the PFC control circuit 60;
the output voltage detection circuit 80 is configured to detect an output voltage of the PFC main circuit 30, and output an output voltage detection signal to the PFC control circuit 60, so that the PFC control circuit 60 outputs a PWM signal with a corresponding duty ratio to the PFC main circuit 30 according to the connected output voltage detection signal.
The output voltage detection circuit 80 may be implemented by a voltage dividing circuit constituted by a resistor device. Referring to fig. 2, the output voltage detection circuit 80 may include a third resistor R3 and a fourth resistor R4 connected in series, and the output voltage detection circuit 80 may use the principle of resistor voltage division to attenuate the output voltage of the PFC main circuit 30 as an output voltage detection signal, and output the output voltage to the PFC control circuit 60.
The PFC control circuit 60 may convert the voltage detection signal into a digital signal, and then analyze and calculate the digital signal to determine the output voltage of the PFC main circuit 30, and may compare the output voltage of the PFC main circuit 30 with a preset output voltage threshold, and may correspondingly adjust the duty ratio of the PWM signal according to the comparison result. The method comprises the following steps: when the comparison result is smaller than the preset value, correspondingly heightening the duty ratio of the PWM signal; and when the comparison result is larger than the preset value, correspondingly reducing the duty ratio of the PWM signal. Thus, the PFC main circuit 30 can maintain the output stability of the dc voltage according to the PWM signal after the duty ratio is adjusted, so as to implement the output negative feedback adjustment of the PFC main circuit 30.
It should be noted that, when the vehicle-mounted redundant power supply has the output filter circuit 50, the detection end of the output voltage detection circuit 80 may be connected to the output end of the output filter circuit 50 to detect the dc voltage output by the vehicle-mounted redundant power supply, and output an output voltage detection signal to the PFC control circuit 60 to implement the output negative feedback adjustment.
The utility model also provides an electric automobile, which comprises a vehicle-mounted redundant power supply, and the specific structure of the vehicle-mounted redundant power supply refers to the embodiment, and because the electric automobile adopts all the technical schemes of all the embodiments, the electric automobile at least has all the beneficial effects brought by the technical schemes of the embodiments, and the description is omitted herein.
Optionally, the electric automobile further includes:
and the output ends of the vehicle-mounted main power supply and the vehicle-mounted redundant power supply are connected with each other.
The vehicle-mounted main power supply and the vehicle-mounted redundant power supply can be arranged in the vehicle-mounted power supply system, and the output ends of the vehicle-mounted main power supply and the vehicle-mounted redundant power supply are connected with each other to serve as the output end of the vehicle-mounted power supply system. The vehicle-mounted power supply system can further comprise a power supply management system, and the power supply management system can control the vehicle-mounted main power supply to output direct-current voltage to serve as the output voltage of the vehicle-mounted power supply system when the vehicle-mounted main power supply is normal, and control the vehicle-mounted redundant power supply not to output direct-current voltage at the moment; when the vehicle-mounted main power supply fails, the vehicle-mounted main power supply is controlled to stop working, and meanwhile, the vehicle-mounted redundant power supply is controlled to work to output direct-current voltage as the output voltage of the vehicle-mounted power supply system, so that uninterrupted power supply of the vehicle-mounted power supply system is realized.
The foregoing description is only of the optional embodiments of the present utility model, and is not intended to limit the scope of the utility model, and all the equivalent structural changes made by the description of the present utility model and the accompanying drawings or the direct/indirect application in other related technical fields are included in the scope of the utility model.
Claims (10)
1. An in-vehicle redundant power supply, comprising:
the PWM signal input end is used for accessing a PWM signal;
the input filter circuit is used for outputting the accessed alternating current after filtering;
the input end of the rectifying circuit is connected with the output end of the input filter circuit, and the rectifying circuit is used for rectifying the alternating current output by the filter circuit into direct current and then outputting the direct current; the method comprises the steps of,
the PFC main circuit is used for correcting the power factor of direct current output by the rectifying circuit according to the received PWM signal.
2. The on-board redundant power supply of claim 1, wherein the PFC main circuit comprises: the circuit comprises a capacitor, an inductor, a resistor, a switching device, a first diode, a second diode and a voltage stabilizing diode;
the first end and the second end of the capacitor are respectively connected with the rectifying circuit, the first end of the capacitor is also connected with the anode of the second diode through the inductor, the first diode is connected with the inductor in parallel, the cathode of the second diode is connected with the output end of the PFC main circuit, the second end of the capacitor is also connected with the output end of the switching device, the output end of the switching device is also grounded, the input end of the switching device is connected with the anode of the second diode, the controlled end of the switching device is used for accessing PWM signals, the two ends of the resistor are respectively connected with the controlled end of the switching device and the ground, and the voltage stabilizing diode is connected with the resistor in parallel.
3. The in-vehicle redundant power supply of claim 1, wherein the input filter circuit comprises:
and the input end of the EMI filter circuit is connected with alternating current, and the output end of the EMI filter circuit is connected with the output end of the input filter circuit.
4. The in-vehicle redundant power supply of claim 1, further comprising:
the input protection circuit, the input of input protection circuit is used for switching in the alternating current, the output of input protection circuit with input filter circuit's input is connected, input protection circuit is used for stopping outputting alternating current to when the alternating current of switching in is too big input filter circuit.
5. The in-vehicle redundant power supply of claim 1, further comprising:
and the input end of the output filter circuit is connected with the output of the PFC main circuit, and the output filter circuit is used for outputting the direct current output by the PFC main circuit after filtering.
6. The in-vehicle redundant power supply of any one of claims 1-5, further comprising:
and the PFC control circuit is connected with the PWM signal input end and is used for outputting a PWM signal to the PFC main circuit through the PWM signal input end.
7. The in-vehicle redundant power supply of claim 6, further comprising:
the detection end of the input voltage detection circuit is connected with the input end of the PFC main circuit, and the output end of the input voltage detection circuit is connected with the PFC control circuit;
the input voltage detection circuit is used for detecting the input voltage of the PFC main circuit and outputting an input voltage detection signal to the PFC control circuit, so that the PFC control circuit outputs a PWM signal with corresponding duty ratio to the PFC main circuit according to the accessed input voltage detection signal.
8. The in-vehicle redundant power supply of claim 6, further comprising:
the detection end of the output voltage detection circuit is connected with the output end of the PFC main circuit, and the output end of the output voltage detection circuit is connected with the PFC control circuit;
the output voltage detection circuit is used for detecting the output voltage of the PFC main circuit and outputting an output voltage detection signal to the PFC control circuit, so that the PFC control circuit outputs a PWM signal with corresponding duty ratio to the PFC main circuit according to the accessed output voltage detection signal.
9. An electric vehicle, characterized in that it comprises a redundant power supply for vehicles according to any one of claims 1 to 8.
10. The electric vehicle of claim 9, characterized in that the electric vehicle further comprises:
and the output ends of the vehicle-mounted main power supply and the vehicle-mounted redundant power supply are connected with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353070.XU CN219535701U (en) | 2023-02-20 | 2023-02-20 | Vehicle-mounted redundant power supply and electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320353070.XU CN219535701U (en) | 2023-02-20 | 2023-02-20 | Vehicle-mounted redundant power supply and electric automobile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219535701U true CN219535701U (en) | 2023-08-15 |
Family
ID=87585772
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320353070.XU Active CN219535701U (en) | 2023-02-20 | 2023-02-20 | Vehicle-mounted redundant power supply and electric automobile |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219535701U (en) |
-
2023
- 2023-02-20 CN CN202320353070.XU patent/CN219535701U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| TWI441404B (en) | Capacitor discharging circuit and power converter using same | |
| US20130003427A1 (en) | Power factor correction converter and power factor correction conversion device | |
| CN103474965A (en) | Low-cost alternating-current input overvoltage protection circuit and switching power supply | |
| CN102611294B (en) | Single-stage PFC (Power Factor Correction) circuit with integrated Cuk circuit and Flyback circuit | |
| CN104185333A (en) | Constant-current constant-voltage circuit and illuminating device | |
| CN110912415A (en) | Low-power-consumption isolated output household power supply | |
| CN103025009A (en) | Light-emitting diode (LED) driving control circuit | |
| CN106921303A (en) | A kind of switching mode power supply transformer | |
| CN201887660U (en) | LPC switch power supply circuit and air conditioner with same | |
| CN107834832A (en) | A kind of voltage peak absorbing circuit | |
| CN101982921B (en) | Universal high-voltage capacitor energy storage module | |
| CN212412757U (en) | Electric potential absorption circuit | |
| CN219535701U (en) | Vehicle-mounted redundant power supply and electric automobile | |
| CN203301209U (en) | Charging device for super capacitor | |
| CN110868091A (en) | Nonlinear control method of vehicle-mounted charger PFC converter based on differential flatness | |
| CN203942440U (en) | A kind of power factor regulating circuit | |
| CN219740030U (en) | Vehicle-mounted redundant power supply and electric automobile | |
| CN203911564U (en) | An electric bus charging machine module | |
| CN103207302B (en) | Detection circuit and power correction circuit for inductor discharge current | |
| CN214850976U (en) | Automobile power supply voltage reduction circuit | |
| CN110729702A (en) | Controller | |
| CN106655753B (en) | The single-phase no isolated function of bridge of one kind is because of adjustment circuit | |
| CN216981805U (en) | Valley filling circuit and AC/DC switching power supply | |
| CN2482258Y (en) | Uninterrupted power supply unit for computer | |
| CN205142020U (en) | Invertion power supply and contravariant welding machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |