CN114374248A - Power supply circuit and vehicle - Google Patents
Power supply circuit and vehicle Download PDFInfo
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- CN114374248A CN114374248A CN202210049464.6A CN202210049464A CN114374248A CN 114374248 A CN114374248 A CN 114374248A CN 202210049464 A CN202210049464 A CN 202210049464A CN 114374248 A CN114374248 A CN 114374248A
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- 239000003990 capacitor Substances 0.000 claims description 71
- 230000000087 stabilizing effect Effects 0.000 claims description 53
- 230000005669 field effect Effects 0.000 claims description 29
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 230000006641 stabilisation Effects 0.000 description 4
- 238000011105 stabilization Methods 0.000 description 4
- 230000001276 controlling effect Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000006698 induction Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0063—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with circuits adapted for supplying loads from the battery
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60L—PROPULSION OF ELECTRICALLY-PROPELLED VEHICLES; SUPPLYING ELECTRIC POWER FOR AUXILIARY EQUIPMENT OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRODYNAMIC BRAKE SYSTEMS FOR VEHICLES IN GENERAL; MAGNETIC SUSPENSION OR LEVITATION FOR VEHICLES; MONITORING OPERATING VARIABLES OF ELECTRICALLY-PROPELLED VEHICLES; ELECTRIC SAFETY DEVICES FOR ELECTRICALLY-PROPELLED VEHICLES
- B60L3/00—Electric devices on electrically-propelled vehicles for safety purposes; Monitoring operating variables, e.g. speed, deceleration or energy consumption
- B60L3/04—Cutting off the power supply under fault conditions
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R16/00—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for
- B60R16/02—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements
- B60R16/03—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for
- B60R16/033—Electric or fluid circuits specially adapted for vehicles and not otherwise provided for; Arrangement of elements of electric or fluid circuits specially adapted for vehicles and not otherwise provided for electric constitutive elements for supply of electrical power to vehicle subsystems or for characterised by the use of electrical cells or batteries
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/00304—Overcurrent protection
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02J—CIRCUIT ARRANGEMENTS OR SYSTEMS FOR SUPPLYING OR DISTRIBUTING ELECTRIC POWER; SYSTEMS FOR STORING ELECTRIC ENERGY
- H02J7/00—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
- H02J7/0029—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits
- H02J7/0031—Circuit arrangements for charging or depolarising batteries or for supplying loads from batteries with safety or protection devices or circuits using battery or load disconnect circuits
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- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Transportation (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
The present invention provides a power supply circuit for a vehicle, including: the power supply system comprises a power supply module, a power supply management system module and a control module, wherein the control module is used for receiving an enabling signal of the power supply management system module and then connecting a power supply circuit, or receiving a non-enabling signal of the power supply management system module and then disconnecting the power supply circuit; the first input end of the power management system module is connected with the positive electrode of the power module, the second input end of the power management system module is connected with the negative electrode of the power module, and the output end of the power management system module is connected with the first input end of the control module; the positive pole of the power supply module is also connected with the second input end of the control module, the output end of the control module is connected with the input end of the power utilization system of the vehicle, and the negative pole of the power supply module is connected with the output end of the power utilization system of the vehicle. According to the embodiment of the invention, the control module is used for controlling the power supply circuit to be disconnected and closed with the power utilization system of the vehicle, so that the probability of abnormal disconnection of the power supply circuit is reduced, and the reliability of the power supply circuit is improved.
Description
Technical Field
The invention relates to the technical field of vehicles, in particular to a power supply circuit and a vehicle.
Background
New energy vehicles are one of the current vehicle markets, being driven by the vehicle's main power battery. Since the main power battery of the vehicle has a high voltage, many electrical devices on the vehicle cannot operate in a high-voltage environment, and need to be driven by an electrical system. In the related art, by using the field effect transistor for connection and disconnection of the electric system, multiple short-circuit protection can be achieved due to the excellent switching speed of the field effect transistor. However, in the related art, since the supply voltage range of the field effect transistor is narrow, the supply circuit is easily disconnected in the battery system having a high voltage, and the power system cannot be normally used.
As can be seen, the related art has a problem that the power supply circuit is easily disconnected in a battery system having a high voltage, resulting in poor reliability of the power supply circuit.
Disclosure of Invention
The embodiment of the invention provides a power supply circuit of a vehicle and the vehicle, and aims to solve the problem that the reliability of the power supply circuit is poor due to the fact that the power supply circuit is easy to be disconnected in a battery system with higher voltage in the related art.
To achieve the above object, an embodiment of the present invention provides a power supply circuit for a vehicle, including: a power module, a power management system module and a control module, wherein,
the control module is used for receiving an enabling signal of the power management system module and then connecting the power supply circuit, or receiving a non-enabling signal of the power management system module and then disconnecting the power supply circuit;
the first input end of the power management system module is connected with the positive electrode of the power module, the second input end of the power management system module is connected with the negative electrode of the power module, and the output end of the power management system module is connected with the first input end of the control module;
the positive pole of the power supply module is also connected with the second input end of the control module, the output end of the control module is connected with the input end of the power utilization system of the vehicle, and the negative pole of the power supply module is connected with the output end of the power utilization system of the vehicle.
As an alternative embodiment, the control module includes a voltage regulation chip and a first field effect transistor, wherein,
the output end of the power management system module is connected with the enabling end of the voltage stabilizing chip;
the first input end of the voltage stabilizing chip is connected with the anode of the power supply module, the output end of the voltage stabilizing chip is connected with the grid electrode of the first field effect transistor, and the grounding end of the voltage stabilizing chip is connected with the ground wire;
the anode of the power supply module is also connected with the drain electrode of the first field effect transistor, and the source electrode of the first field effect transistor is connected with the input end of the power utilization system of the vehicle.
As an optional implementation manner, the power supply circuit further comprises a first trigger, a second trigger and a second field effect transistor, wherein,
the input end of the first trigger is connected with the first output end of the power management system module, the output end of the first trigger is connected with the enabling end of the voltage stabilizing chip, and the output end of the voltage stabilizing chip is connected with the drain electrode of the second field effect transistor;
the input end of the second trigger is connected with the second output end of the power management system module, and the output end of the second trigger is connected with the grid electrode of the second field effect transistor;
and the source electrode of the second field effect transistor is connected with the grid electrode of the first field effect transistor.
As an optional implementation manner, the power supply circuit further includes an inductor and a first capacitor, wherein,
the first end of the inductor is connected with the anode of the power supply module, and the second end of the inductor is connected with the switch end of the voltage stabilizing chip;
the first end of the first capacitor is connected with the second end of the inductor, and the second end of the first capacitor is connected with the boosting end of the voltage stabilizing chip.
As an optional implementation manner, the power supply circuit further includes a second capacitor, a first end of the second capacitor is connected to the positive electrode of the power module, and a second end of the second capacitor is connected to the ground.
As an optional implementation manner, the power supply circuit further includes a first resistor, a second resistor, and a third capacitor, wherein,
the first end of the first resistor is connected with the output end of the voltage stabilizing chip, and the second end of the first resistor is connected with the feedback end of the voltage stabilizing chip;
the first end of the second resistor is connected with the feedback end of the voltage stabilizing chip, and the second end of the second resistor is connected with the grounding end of the voltage stabilizing chip;
the first end of the third capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the third capacitor is connected with the feedback end of the voltage stabilizing chip.
As an optional implementation manner, the power supply circuit further includes a fourth capacitor, a first end of the fourth capacitor is connected to the second input end of the voltage stabilizing chip, and a second end of the fourth capacitor is connected to the ground end of the voltage stabilizing chip.
As an optional implementation manner, the power supply circuit further includes a third resistor, a first end of the third resistor is connected to the variable resistor end of the voltage stabilizing chip, and a second end of the third resistor is connected to the ground end of the voltage stabilizing chip.
As an optional implementation manner, the power supply circuit further includes a fifth capacitor and a sixth capacitor, wherein,
the first end of the fifth capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the fifth capacitor is connected with the ground wire;
and the first end of the sixth capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the sixth capacitor is connected with the ground wire.
The embodiment of the invention also provides a vehicle which comprises the power supply circuit of the vehicle.
One of the above technical solutions has the following advantages or beneficial effects:
according to the embodiment of the invention, the control module is used for controlling the power supply circuit to be disconnected and closed with the vehicle power utilization system, the probability of abnormal disconnection of the power supply circuit is reduced, and meanwhile, the power management system module is used for sending the disabling signal to the control module to disconnect the control module from the vehicle power utilization system when the vehicle power utilization system is in short circuit, so that the reliability of the power supply circuit is improved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the description of the embodiments of the present invention will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic diagram of a power supply circuit for a vehicle provided by an embodiment of the present invention;
FIG. 2 is a schematic diagram of another vehicle power supply circuit provided by an embodiment of the present invention;
fig. 3 is a schematic diagram of a power supply circuit of another vehicle according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, as shown in fig. 1, an embodiment of the present invention provides a power supply circuit for a vehicle, including: a power module 101, a power management system module U1, and a control module 102, wherein,
the control module 102 is configured to connect the power supply circuit after receiving an enable signal of the power management system module U1, or disconnect the power supply circuit after receiving a disable signal of the power management system module U1;
a first input end of the power management system module U1 is connected with the positive electrode of the power module 101, a second input end of the power management system module U1 is connected with the negative electrode of the power module 101, and an output end of the power management system module U1 is connected with a first input end of the control module 102;
the positive pole of the power module 101 is further connected to the second input terminal of the control module 102, the output terminal of the control module 102 is connected to the input terminal of the electric system of the vehicle, and the negative pole of the power module 101 is connected to the output terminal of the electric system of the vehicle.
In this embodiment, the control module 102 controls the power supply circuit to be opened and closed from the vehicle power system, so that the probability of abnormal opening of the power supply circuit is reduced, and the power management system module U1 can transmit an disable signal to the control module 102 when the vehicle power system is short-circuited, so that the control module 102 is disconnected from the vehicle power system, thereby improving the reliability of the power supply circuit.
The power management system module U1 can send an enable signal or disable signal to the control module 102 according to the usage environment of the power module 101, that is, send an enable signal to the control module 102 in the normal usage environment of the power module 101, so that the control module 102 keeps the power supply circuit connected; when the power supply module 101 is abnormal, an disable signal is sent to the control module 102, and the control module 102 is disconnected from the power supply circuit. Thus, when the voltage of the power module 101 is at a higher voltage level, the power management system module U1 still sends an enable signal to the control module 102, and at this time, the control module 102 still keeps the power supply circuit connected, so that the power supply circuit is not abnormally disconnected, and the reliability of the power supply circuit is further improved.
As an alternative embodiment, as shown in fig. 2, the control module 102 includes a voltage regulator chip U2 and a first fet Q1, wherein,
the output end of the power management system module U1 is connected with the enable end of the voltage stabilizing chip U2;
the first input end of the voltage stabilizing chip U2 is connected with the positive electrode of the power supply module 101, the output end of the voltage stabilizing chip U2 is connected with the gate of the first field-effect tube Q1, and the grounding end of the voltage stabilizing chip U2 is connected with the ground wire;
the positive electrode of the power supply module 101 is also connected to the drain of the first fet Q1, and the source of the first fet Q1 is connected to the input of the electrical system of the vehicle.
In the embodiment, the connection between the drain and the source of the first field effect transistor Q1 is controlled by the voltage stabilization chip U2 and the first field effect transistor Q1 when the voltage stabilization chip U2 receives an enable signal sent by the power management system module U1; when the voltage stabilizing chip U2 receives a disable signal sent by the power management system module U1, the drain and the source of the first field effect transistor Q1 are controlled to be disconnected.
The voltage stabilizing chip U2 may be an LT8336 chip, and may be configured to maintain a fixed voltage at the output terminal, so that the voltage of the power module 101 may be kept continuously communicated between the drain and the source of the first fet Q1 when the voltage is at a low voltage or a higher voltage. For example, the voltage at the input end of the regulator chip U2 is 12V, the voltage at the output end of the regulator chip U2 is 28V, and the limit of the connection condition of the first fet Q1 is 5V. At this time, the gate of the first fet Q1 is connected to the output terminal of the regulator chip U2, the gate voltage of the first fet Q1 is 24V, the difference between the gate voltage and the source voltage is not less than 12V, and the limit value of the first fet Q1 is only 5V, in which case the drain and the source of the first fet Q1 are connected.
Since the voltage range of the power module 101 is usually 9-18V, and the difference between the gate voltage and the source voltage of the first fet Q1 is 10-19V, which is greater than the limit value 5V of the first fet Q1, the power supply circuit can still be connected when the voltage of the power module 101 fluctuates.
As an alternative embodiment, as shown in fig. 2, the power supply circuit further includes a first flip-flop, a second flip-flop, and a second fet Q2, wherein,
the input end of the first trigger is connected with the first output end of the power management system module U1, the output end of the first trigger is connected with the enable end of the voltage stabilizing chip U2, and the output end of the voltage stabilizing chip U2 is connected with the drain electrode of the second field effect transistor Q2;
the input end of the second trigger is connected with the second output end of the power management system module U1, and the output end of the second trigger is connected with the grid of the second field-effect transistor Q2;
the source of the second fet Q2 is connected to the gate of the first fet Q1.
In this embodiment, the first flip-flop, the second flip-flop, and the second fet Q2 enable the power management system to directly turn off the second fet Q2 by sending an disable signal to the second flip-flop, thereby controlling the first fet Q1 to be turned off quickly and improving the response speed of the power supply circuit.
Specifically, when the power module 101 works normally, the power management system module U1 sends an enable signal to the regulator chip U2 through the first flip-flop, and simultaneously, the power management system sends an enable signal to the gate of the second fet Q2 through the second flip-flop, so that the second fet Q2 remains connected. When the power supply module 101 is abnormal and the power supply circuit needs to be disconnected, the power management system module U1 sends an disable signal to the second fet Q2 through the second trigger, and the second fet Q2 is disconnected, thereby controlling the disconnection of the first fet Q1. Compared with the method that the first field effect transistor Q1 is controlled to be connected or disconnected through the voltage stabilizing chip U2, the response time required by disconnection can be effectively shortened through the second field effect transistor Q2, and the damage probability of electronic equipment caused by long power-off time is effectively reduced.
As an alternative embodiment, the power supply circuit further comprises an inductor L and a first capacitor C1, wherein,
the first end of the inductor L is connected with the positive electrode of the power supply module 101, and the second end of the inductor L is connected with the switch end of the voltage stabilizing chip U2;
the first end of the first capacitor C1 is connected to the second end of the inductor L, and the second end of the first capacitor C1 is connected to the boost end of the regulator chip U2.
In this embodiment, the output terminal of the regulator chip U2 can be maintained at the set value by the regulator chip U2 through the inductor L and the first capacitor C1. Under the condition that the voltage changes, the inductor L generates an induction current to maintain the voltage, and the first capacitor C1 charges or discharges according to the induction current, so that the voltage of the output end of the voltage stabilizing chip U2 is stabilized.
In the embodiment of the present invention, the size of the inductor L is 15 μ H, and the size of the first capacitor C1 is 0.1 μ F.
As an optional implementation manner, the power supply circuit further includes a second capacitor C2, a first end of the second capacitor C2 is connected to the positive electrode of the power module 101, and a second end of the second capacitor C2 is connected to the ground.
In this embodiment, the first end of the second capacitor C2 is connected to the positive electrode of the power module 101, the second end of the second capacitor C2 is connected to the ground, and the second capacitor C2 can perform the functions of filtering and voltage stabilization, so that the fluctuation degree of the voltage input to the voltage stabilization chip U2 is maintained at a low level.
Wherein, the size of the second capacitor C2 is 10 μ F in the embodiment of the present invention.
As an alternative embodiment, the power supply circuit further includes a first resistor R1, a second resistor R2, and a third capacitor C3, wherein,
a first end of the first resistor R1 is connected with the output end of the voltage stabilizing chip U2, and a second end of the first resistor R1 is connected with the feedback end of the voltage stabilizing chip U2;
a first end of the second resistor R2 is connected with the feedback end of the voltage stabilizing chip U2, and a second end of the second resistor R2 is connected with the grounding end of the voltage stabilizing chip U2;
the first end of the third capacitor C3 is connected to the output terminal of the regulator chip U2, and the second end of the third capacitor C3 is connected to the feedback terminal of the regulator chip U2.
In this embodiment, the first resistor R1, the second resistor R2, and the third capacitor C3 can feed back the output voltage to the regulator chip U2, and the voltage at the output terminal is maintained at the set value by the internal circuit of the regulator chip U2.
In the embodiment of the present invention, the first resistor R1 has a size of 1M, the second resistor R2 has a size of 37K, and the third capacitor C3 has a size of 4.7 pF.
As an optional implementation manner, the power supply circuit further includes a fourth capacitor C4, a first end of the fourth capacitor C4 is connected to the second input terminal of the voltage regulator chip U2, and a second end of the fourth capacitor C4 is connected to the ground terminal of the voltage regulator chip U2.
In this embodiment, the first terminal of the fourth capacitor C4 is connected to the second input terminal of the voltage regulator chip U2, the second terminal of the fourth capacitor C4 is connected to the ground terminal of the voltage regulator chip U2, and the internal operating circuit of the voltage regulator chip U2 is filtered and regulated by the fourth capacitor C4.
In the embodiment of the present invention, the size of the fourth capacitor C4 is 1 μ F.
As an optional implementation manner, the power supply circuit further includes a third resistor R3, a first end of the third resistor R3 is connected to the variable resistor end of the voltage regulator chip U2, and a second end of the third resistor R3 is connected to the ground end of the voltage regulator chip U2.
In this embodiment, the first end of the third resistor R3 is connected to the variable resistor end of the regulator chip U2, the second end of the third resistor R3 is connected to the ground end of the regulator chip U2, and the operating frequency of the regulator chip U2 is controlled by the resistance of the third resistor R3.
In the embodiment of the present invention, the size of the third resistor R3 is 102K, and the selected operating frequency is 1 MHz.
As an alternative embodiment, the power supply circuit further comprises a fifth capacitor C5 and a sixth capacitor C6, wherein,
a first end of the fifth capacitor C5 is connected with the output end of the voltage stabilizing chip U2, and a second end of the fifth capacitor C5 is connected with the ground wire;
the first end of the sixth capacitor C6 is connected with the output end of the voltage stabilizing chip U2, and the second end of the sixth capacitor C6 is connected with the ground wire.
In this embodiment, the voltage at the output terminal of the regulator chip U2 can be filtered and regulated by the fifth capacitor C5 and the sixth capacitor C6, so that the voltage at the gate of the first fet Q1 is maintained at a set level.
In the embodiment of the present invention, the size of the fifth capacitor C5 is 1 μ F, and the size of the sixth capacitor C6 is 10 μ F.
The embodiment of the invention also provides a vehicle which comprises the power supply circuit of the vehicle.
It should be noted that, the implementation manner of the power supply circuit embodiment of the vehicle is also applicable to the embodiment of the vehicle, and the same technical effect can be achieved, and details are not described herein again.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A power supply circuit, comprising: a power module, a power management system module and a control module, wherein,
the control module is used for receiving an enabling signal of the power management system module and then connecting the power supply circuit, or receiving a non-enabling signal of the power management system module and then disconnecting the power supply circuit;
the first input end of the power management system module is connected with the positive electrode of the power module, the second input end of the power management system module is connected with the negative electrode of the power module, and the output end of the power management system module is connected with the first input end of the control module;
the positive pole of the power supply module is also connected with the second input end of the control module, the output end of the control module is connected with the input end of the power utilization system of the vehicle, and the negative pole of the power supply module is connected with the output end of the power utilization system of the vehicle.
2. The power supply circuit of claim 1, wherein the control module comprises a regulator chip and a first field effect transistor, wherein,
the output end of the power management system module is connected with the enabling end of the voltage stabilizing chip;
the first input end of the voltage stabilizing chip is connected with the anode of the power supply module, the output end of the voltage stabilizing chip is connected with the grid electrode of the first field effect transistor, and the grounding end of the voltage stabilizing chip is connected with the ground wire;
the anode of the power supply module is also connected with the drain electrode of the first field effect transistor, and the source electrode of the first field effect transistor is connected with the input end of the power utilization system of the vehicle.
3. The power supply circuit of claim 2, further comprising a first flip-flop, a second flip-flop, and a second field effect transistor, wherein,
the input end of the first trigger is connected with the first output end of the power management system module, the output end of the first trigger is connected with the enabling end of the voltage stabilizing chip, and the output end of the voltage stabilizing chip is connected with the drain electrode of the second field effect transistor;
the input end of the second trigger is connected with the second output end of the power management system module, and the output end of the second trigger is connected with the grid electrode of the second field effect transistor;
and the source electrode of the second field effect transistor is connected with the grid electrode of the first field effect transistor.
4. The power supply circuit of claim 3, further comprising an inductor and a first capacitor, wherein,
the first end of the inductor is connected with the anode of the power supply module, and the second end of the inductor is connected with the switch end of the voltage stabilizing chip;
the first end of the first capacitor is connected with the second end of the inductor, and the second end of the first capacitor is connected with the boosting end of the voltage stabilizing chip.
5. The power supply circuit according to claim 4, further comprising a second capacitor, wherein a first end of the second capacitor is connected to the positive electrode of the power module, and a second end of the second capacitor is connected to the ground.
6. The power supply circuit of claim 4, further comprising a first resistor, a second resistor, and a third capacitor, wherein,
the first end of the first resistor is connected with the output end of the voltage stabilizing chip, and the second end of the first resistor is connected with the feedback end of the voltage stabilizing chip;
the first end of the second resistor is connected with the feedback end of the voltage stabilizing chip, and the second end of the second resistor is connected with the grounding end of the voltage stabilizing chip;
the first end of the third capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the third capacitor is connected with the feedback end of the voltage stabilizing chip.
7. The power supply circuit according to claim 6, further comprising a fourth capacitor, wherein a first terminal of the fourth capacitor is connected to the second input terminal of the voltage regulator chip, and a second terminal of the fourth capacitor is connected to the ground terminal of the voltage regulator chip.
8. The power supply circuit according to claim 7, further comprising a third resistor, wherein a first end of the third resistor is connected to the variable resistor end of the voltage regulator chip, and a second end of the third resistor is connected to the ground end of the voltage regulator chip.
9. The power supply circuit of claim 8, further comprising a fifth capacitor and a sixth capacitor, wherein,
the first end of the fifth capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the fifth capacitor is connected with the ground wire;
and the first end of the sixth capacitor is connected with the output end of the voltage stabilizing chip, and the second end of the sixth capacitor is connected with the ground wire.
10. A vehicle, characterized in that the vehicle comprises a supply circuit according to any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049464.6A CN114374248B (en) | 2022-01-17 | 2022-01-17 | Power supply circuit and vehicle |
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| CN202210049464.6A CN114374248B (en) | 2022-01-17 | 2022-01-17 | Power supply circuit and vehicle |
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| CN114374248A true CN114374248A (en) | 2022-04-19 |
| CN114374248B CN114374248B (en) | 2024-06-14 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202978679U (en) * | 2012-11-06 | 2013-06-05 | 沈阳创达技术交易市场有限公司 | Hybrid integration IGBT driving circuit |
| CN107182155A (en) * | 2017-05-22 | 2017-09-19 | 上海沪工汽车电器有限公司 | A kind of solid-state relay for automobile lamp |
| CN208112210U (en) * | 2018-03-09 | 2018-11-16 | 深圳市晟瑞科技有限公司 | A kind of short-circuit protection circuit |
| CN111026215A (en) * | 2019-12-04 | 2020-04-17 | 深圳市优必选科技股份有限公司 | Power-on control circuit and power-on control system of steering engine |
| US20200186029A1 (en) * | 2018-12-07 | 2020-06-11 | Siemens Aktiengesellschaft | Arrangement and method for current measurement |
-
2022
- 2022-01-17 CN CN202210049464.6A patent/CN114374248B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202978679U (en) * | 2012-11-06 | 2013-06-05 | 沈阳创达技术交易市场有限公司 | Hybrid integration IGBT driving circuit |
| CN107182155A (en) * | 2017-05-22 | 2017-09-19 | 上海沪工汽车电器有限公司 | A kind of solid-state relay for automobile lamp |
| CN208112210U (en) * | 2018-03-09 | 2018-11-16 | 深圳市晟瑞科技有限公司 | A kind of short-circuit protection circuit |
| US20200186029A1 (en) * | 2018-12-07 | 2020-06-11 | Siemens Aktiengesellschaft | Arrangement and method for current measurement |
| CN111026215A (en) * | 2019-12-04 | 2020-04-17 | 深圳市优必选科技股份有限公司 | Power-on control circuit and power-on control system of steering engine |
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| Publication number | Publication date |
|---|---|
| CN114374248B (en) | 2024-06-14 |
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