CN114374248B - Power supply circuit and vehicle - Google Patents
Power supply circuit and vehicle Download PDFInfo
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- CN114374248B CN114374248B CN202210049464.6A CN202210049464A CN114374248B CN 114374248 B CN114374248 B CN 114374248B CN 202210049464 A CN202210049464 A CN 202210049464A CN 114374248 B CN114374248 B CN 114374248B
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- 230000000087 stabilizing effect Effects 0.000 claims description 79
- 239000003990 capacitor Substances 0.000 claims description 68
- 230000005669 field effect Effects 0.000 claims description 47
- 230000002159 abnormal effect Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 230000005856 abnormality Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
Classifications
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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
-
- 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
-
- 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
Landscapes
- 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 of a vehicle, comprising: the power supply module, the power management system module and the control module, wherein the control module is used for connecting the power supply circuit after receiving the enabling signal of the power management system module or disconnecting the power supply circuit after receiving the disabling signal of the power management system module; 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 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 system of the vehicle, and the negative pole of the power module is connected with the output end of the power system of the vehicle. According to the embodiment of the invention, the power supply circuit is controlled to be disconnected and closed with the power utilization system of the vehicle through the control module, so that the abnormal disconnection probability 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 main power battery of the vehicle. Since the main power battery of the vehicle is at 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, the switching-in and switching-off of the power system is performed by using a field effect transistor, and multiple short-circuit protection can be realized due to the excellent switching speed of the field effect transistor. However, in the related art, the power supply circuit is easily disconnected in the battery system with higher voltage due to the narrower power supply voltage range of the field effect transistor, so that the power utilization system cannot be used normally.
As can be seen, the related art has a problem that the power supply circuit is easily disconnected in a battery system with 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 because the power supply circuit is easy to disconnect in a battery system with higher voltage in the related technology.
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 the enabling signal of the power management system module and then connecting the power supply circuit, or disconnecting the power supply circuit after receiving the disabling signal of the power management system module;
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 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 system of the vehicle, and the negative pole of the power module is connected with the output end of the power system of the vehicle.
As an alternative embodiment, the control module comprises a voltage stabilizing 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 positive electrode 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 positive electrode of the power module is also connected with the drain electrode of the first field effect tube, and the source electrode of the first field effect tube is connected with the input end of the power system of the vehicle.
As an alternative embodiment, the power supply circuit further comprises 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 tube;
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 tube;
and the source electrode of the second field effect transistor is connected with the grid electrode of the first field effect transistor.
As an alternative embodiment, the power supply circuit further comprises an inductance and a first capacitance, wherein,
The first end of the inductor is connected with the positive electrode 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 comprises a second capacitor, a first end of the second capacitor is connected with the positive electrode of the power supply module, and a second end of the second capacitor is connected with a ground wire.
As an alternative embodiment, the power supply circuit further comprises 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 resistance 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 alternative embodiment, the power supply circuit further comprises 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 a 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 power utilization system of the vehicle, so that the probability of abnormal disconnection of the power supply circuit is reduced, and meanwhile, the power management system module is used for sending a disable signal to the control module when the power utilization system of the vehicle is in short circuit, so that the control module is disconnected with the power utilization system of the vehicle, and 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 that are needed in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
Fig. 1 is a schematic diagram of a power supply circuit of a vehicle according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another power supply circuit for a vehicle according to 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 following description of the embodiments of the present invention will be made clearly and fully with reference to the accompanying drawings, in which it is evident that the embodiments described are some, but not all embodiments of the invention. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Referring to fig. 1, as shown in fig. 1, an embodiment of the present invention provides a power supply circuit of a vehicle, including: a power module 101, a power management system module U1, and a control module 102, wherein,
The control module 102 is used for receiving an enabling signal of the power management system module U1 and then connecting the power supply circuit, or receiving a disabling signal of the power management system module U1 and then disconnecting the power supply circuit;
The first input end of the power management system module U1 is connected with the positive electrode of the power module 101, the second input end of the power management system module U1 is connected with the negative electrode of the power module 101, and the output end of the power management system module U1 is connected with the first input end of the control module 102;
The positive pole of the power module 101 is also connected to a second input of the control module 102, the output of the control module 102 is connected to an input of the electrical system of the vehicle, and the negative pole of the power module 101 is connected to an output of the electrical system of the vehicle.
In this embodiment, the control module 102 controls the power supply circuit to be disconnected and closed from the power consumption system of the vehicle, so that the probability of abnormal disconnection of the power supply circuit is reduced, and meanwhile, when the power consumption system of the vehicle is in short circuit, the power management system module U1 can send a disable signal to the control module 102 so that the control module 102 is disconnected from the power consumption system of the vehicle, thereby improving the reliability of the power supply circuit.
The power management system module U1 can send an enable signal or a disable signal to the control module 102 according to the use environment of the power module 101, that is, send an enable signal to the control module 102 when the power module 101 is in a normal use environment, so that the control module 102 keeps the power supply circuit connected; in the event of an abnormality in the power supply module 101, a disable signal is sent to the control module 102, causing the control module 102 to disconnect the power supply circuit. Thus, when the voltage of the power supply 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, and no abnormal disconnection occurs, so that the reliability of the power supply circuit is 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, where,
The output end of the power management system module U1 is connected with the enabling 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 module 101, the output end of the voltage stabilizing chip U2 is connected with the grid electrode of the first field effect transistor Q1, and the grounding end of the voltage stabilizing chip U2 is connected with the ground wire;
the positive electrode of the power module 101 is also connected with the drain electrode of the first field effect transistor Q1, and the source electrode of the first field effect transistor Q1 is connected with the input end of the power utilization system of the vehicle.
In this embodiment, through the voltage stabilizing chip U2 and the first field effect transistor Q1, when the voltage stabilizing chip U2 receives the enabling signal sent by the power management system module U1, the connection between the drain and the source of the first field effect transistor Q1 is controlled; when the voltage stabilizing chip U2 receives the disabling signal sent by the power management system module U1, the drain electrode and the source electrode of the first field effect transistor Q1 are controlled to be disconnected.
The voltage stabilizing chip U2 may be a LT8336 type chip, so that the voltage at the output end can be kept at a fixed value, and the connection between the drain and the source of the first fet Q1 can be continuously maintained when the voltage of the power module 101 is at a low voltage or a higher voltage. For example, the voltage at the input terminal of the voltage stabilizing chip U2 is 12V, the voltage at the output terminal of the voltage stabilizing chip U2 is 28V, and the limit value of the connection condition of the first field effect transistor Q1 is 5V. At this time, the gate of the first field effect transistor Q1 is connected to the output end of the voltage stabilizing chip U2, the gate voltage of the first field effect transistor 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 field effect transistor Q1 is only 5V, where the drain and the source of the first field effect transistor Q1 are connected.
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, so that the power supply circuit can still be kept connected under the condition of voltage fluctuation of the power module 101.
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 enabling 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 electrode of the second field effect transistor Q2;
The source electrode of the second field effect transistor Q2 is connected with the gate electrode of the first field effect transistor Q1.
In this embodiment, through the first trigger, the second trigger and the second field effect transistor Q2, the power management system can disconnect the second field effect transistor Q2 directly by sending a disable signal to the second trigger, so as to control the first field effect transistor Q1 to be disconnected rapidly, and improve 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 voltage stabilizing chip U2 through the first trigger, and meanwhile, the power management system sends an enable signal to the gate of the second field effect transistor Q2 through the second trigger, so that the second field effect transistor Q2 is kept 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 a disable signal to the second field effect transistor Q2 through the second trigger, and the second field effect transistor Q2 is disconnected, so that the first field effect transistor Q1 is controlled to be disconnected. 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 reduced through the second field effect transistor Q2, and the damage probability of electronic equipment caused by longer power-off time is effectively reduced.
As an alternative embodiment, the supply circuit further comprises an inductance L and a first capacitance 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 with the second end of the inductor L, and the second end of the first capacitor C1 is connected with the boosting end of the voltage stabilizing chip U2.
In this embodiment, the output terminal of the voltage stabilizing chip U2 can be maintained at a set value by the voltage stabilizing chip U2 through the inductor L and the first capacitor C1. Under the condition that the voltage is changed, the inductor L generates an induced current maintaining voltage, and the first capacitor C1 charges or discharges according to the induced 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 inductance L is 15 μh, and the first capacitance C1 is 0.1 μf.
As an alternative embodiment, the power supply circuit further includes a second capacitor C2, where 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 filtering and voltage stabilizing functions, so that the fluctuation degree of the voltage input to the voltage stabilizing chip U2 is maintained at a low level.
In the embodiment of the present invention, the second capacitor C2 has a size of 10 μf.
As an alternative embodiment, the power supply circuit further comprises a first resistor R1, a second resistor R2 and a third capacitor C3, wherein,
The first end of the first resistor R1 is connected with the output end of the voltage stabilizing chip U2, and the second end of the first resistor R1 is connected with the feedback end of the voltage stabilizing chip U2;
the first end of the second resistor R2 is connected with the feedback end of the voltage stabilizing chip U2, and the 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 with the output end of the voltage stabilizing chip U2, and the second end of the third capacitor C3 is connected with the feedback end of the voltage stabilizing 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 4.7pF.
As an alternative implementation manner, the power supply circuit further includes a fourth capacitor C4, where a first end of the fourth capacitor C4 is connected to the second input end of the voltage stabilizing chip U2, and a second end of the fourth capacitor C4 is connected to the ground end of the voltage stabilizing chip U2.
In this embodiment, the first end of the fourth capacitor C4 is connected to the second input end of the voltage stabilizing chip U2, the second end of the fourth capacitor C4 is connected to the ground end of the voltage stabilizing chip U2, and the internal operating circuit of the voltage stabilizing chip U2 is filtered and stabilized by the fourth capacitor C4.
The fourth capacitor C4 has a size of 1 μf in the embodiment of the present invention.
As an alternative implementation manner, the power supply circuit further includes a third resistor R3, a first end of the third resistor R3 is connected to a variable resistance end of the voltage stabilizing chip U2, and a second end of the third resistor R3 is connected to a ground end of the voltage stabilizing chip U2.
In this embodiment, the first end of the third resistor R3 is connected to the variable resistor end of the voltage stabilizing chip U2, the second end of the third resistor R3 is connected to the ground end of the voltage stabilizing chip U2, and the operating frequency of the voltage stabilizing chip U2 is controlled by the resistance of the third resistor R3.
In the embodiment of the present invention, the third resistor R3 has a size of 102K, and the selected operating frequency is 1MHz.
As an alternative embodiment, the supply circuit further comprises a fifth capacitor C5 and a sixth capacitor C6, wherein,
The first end of the fifth capacitor C5 is connected with the output end of the voltage stabilizing chip U2, and the 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 of the output terminal of the voltage stabilizing chip U2 can be filtered and stabilized by the fifth capacitor C5 and the sixth capacitor C6, so that the voltage of the gate of the first field effect transistor Q1 is maintained at the set level.
In the embodiment of the present invention, the size of the fifth capacitor C5 is 1 μf, and the size of the sixth capacitor C6 is 10 μf.
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 effects can be achieved, which is not described herein.
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 one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The embodiments of the present invention have been described above with reference to the accompanying drawings, but the present invention is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present invention and the scope of the claims, which are to be protected by the present invention.
Claims (8)
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 the enabling signal of the power management system module and then connecting the power supply circuit, or disconnecting the power supply circuit after receiving the disabling signal of the power management system module;
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 electrode 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 electrode of the power supply module is connected with the output end of the power utilization system of the vehicle;
The control module comprises a voltage stabilizing 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 positive electrode 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 positive electrode of the power supply module is also connected with the drain electrode of the first field effect tube, and the source electrode of the first field effect tube is connected with the input end of the power utilization system of the vehicle;
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 tube;
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 tube;
and the source electrode of the second field effect transistor is connected with the grid electrode of the first field effect transistor.
2. The power supply circuit of claim 1, further comprising an inductor and a first capacitor, wherein,
The first end of the inductor is connected with the positive electrode 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.
3. The power supply circuit of claim 2, further comprising a second capacitor, a first end of the second capacitor being connected to the positive pole of the power module, and a second end of the second capacitor being connected to ground.
4. The power supply circuit of claim 2, 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.
5. The power supply circuit of claim 4, 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.
6. The power supply circuit of claim 5, further comprising a third resistor, wherein a first end of the third resistor is connected to a variable resistor end of the voltage regulator chip, and a second end of the third resistor is connected to a ground end of the voltage regulator chip.
7. The power supply circuit of claim 6, 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 a 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.
8. A vehicle, characterized in that it comprises a power supply circuit according to any one of claims 1-7.
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 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210049464.6A CN114374248B (en) | 2022-01-17 | 2022-01-17 | Power supply circuit and vehicle |
Publications (2)
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| 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 |
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| 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 |
| DE102018221240A1 (en) * | 2018-12-07 | 2020-06-10 | Siemens Aktiengesellschaft | Arrangement and method for measuring current |
| 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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| 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 |
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