CN116094320A - Power supply control circuit, power supply and vehicle - Google Patents

Power supply control circuit, power supply and vehicle Download PDF

Info

Publication number
CN116094320A
CN116094320A CN202211733385.3A CN202211733385A CN116094320A CN 116094320 A CN116094320 A CN 116094320A CN 202211733385 A CN202211733385 A CN 202211733385A CN 116094320 A CN116094320 A CN 116094320A
Authority
CN
China
Prior art keywords
transistor
electrically connected
module
power supply
voltage conversion
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.)
Pending
Application number
CN202211733385.3A
Other languages
Chinese (zh)
Inventor
王汉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Beijing Xiaoma Huixing Technology Co ltd
Original Assignee
Beijing Xiaoma Huixing Technology Co ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Beijing Xiaoma Huixing Technology Co ltd filed Critical Beijing Xiaoma Huixing Technology Co ltd
Priority to CN202211733385.3A priority Critical patent/CN116094320A/en
Publication of CN116094320A publication Critical patent/CN116094320A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00—Conversion of dc power input into dc power output
    • H02M3/02—Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155—Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • 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
    • H02J7/0068—Battery or charger load switching, e.g. concurrent charging and load supply
    • 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
    • H02J7/34—Parallel operation in networks using both storage and other dc sources, e.g. providing buffering
    • 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
    • H02J9/00—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting
    • H02J9/04—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source
    • H02J9/06—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems
    • H02J9/061—Circuit arrangements for emergency or stand-by power supply, e.g. for emergency lighting in which the distribution system is disconnected from the normal source and connected to a standby source with automatic change-over, e.g. UPS systems for DC powered loads
    • 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
    • H02J2207/00—Indexing scheme relating to details of circuit arrangements for charging or depolarising batteries or for supplying loads from batteries
    • H02J2207/20—Charging or discharging characterised by the power electronics converter
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
    • Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
    • Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Dc-Dc Converters (AREA)

Abstract

The application provides a power control circuit, power and vehicle, this power control circuit includes: the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module; the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit; the first load module is provided with a first end and a second end, the first end of the first load module is electrically connected with the second output end of the voltage conversion unit, and the second end of the first load module is grounded; the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module. The circuit solves the problems that the existing power supply control circuit cannot be connected with a plurality of power supply modules in parallel, other power supply modules do not continuously supply power to a load when the main power supply module is abnormal, and the redundancy requirement of a power supply cannot be met.

Description

Power supply control circuit, power supply and vehicle
Technical Field
The application relates to the field of vehicle power supplies, in particular to a power supply control circuit, a power supply and a vehicle.
Background
The autopilot of a small vehicle is typically applied to a large vehicle, often experiencing voltage incompatibilities, with the generator and battery voltage of the large vehicle typically being 24V and the generator and battery voltage of the small vehicle typically being 12V. In the face of such voltage incompatibility, considering the principle of minimum cost, the existing solution is often to add a voltage converter to the 24V battery of a large vehicle to convert the voltage from 24V to around 12V. However, the method cannot achieve the output power required by the vehicle regulations under the high temperature condition, cannot connect a plurality of power supply modules in parallel at the output end, cannot continuously supply power to the load by other power supply modules when the main power supply module is abnormal, and cannot meet the redundancy requirement of the power supply.
Disclosure of Invention
The main aim of the application is to provide a power control circuit, power and vehicle to solve current power control circuit and can't parallelly connected a plurality of power modules, do not have other power modules to last the power supply to the load when main power module is unusual, can't satisfy the redundant demand's of power problem.
In order to achieve the above object, according to one aspect of the present application, there is provided a power supply control circuit including: a first power module having an output; the voltage conversion unit is provided with an input end, a first output end and a second output end, and the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module; the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit; the first load module is provided with a first end and a second end, the first end of the first load module is electrically connected with the second output end of the voltage conversion unit, and the second end of the first load module is grounded; the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module.
Optionally, the power supply control circuit further includes: the drain electrode of the first transistor is electrically connected with the second output end of the voltage conversion unit, the source electrode of the first transistor is electrically connected with the input end of the second power supply module, and the grid electrode of the first transistor is used for inputting a first enabling signal.
Optionally, the first transistor is an NMOS transistor.
Optionally, the power supply control circuit further includes: and the drain electrode of the second transistor is electrically connected with the second output end of the voltage conversion unit, the source electrode of the second transistor is electrically connected with the input end of the first load module, and the grid electrode of the second transistor is used for inputting a second enabling signal.
Optionally, the second transistor is an NMOS transistor.
Optionally, the voltage conversion unit includes: the voltage conversion module is provided with a first end, a second end, a third end and a fourth end, the first end of the voltage conversion module is electrically connected with the output end of the first power supply module, the second end of the voltage conversion module is electrically connected with the input end of the current limiting unit, and the third end of the voltage conversion module is grounded; the driver is provided with an input end and an output end, the output end of the driver is electrically connected with the fourth end of the voltage conversion unit, and the driver is used for driving the voltage conversion module to realize a voltage conversion function; the controller is provided with an input end and an output end, the output end of the controller is electrically connected with the input end of the driver, the input end of the controller is used for inputting a third enabling signal, and the controller is used for controlling the driver to drive the voltage conversion unit.
Optionally, the voltage conversion module includes: a third transistor, a drain electrode of which is electrically connected to an output terminal of the first power supply module, and a gate electrode of which is electrically connected to the driver; a fourth transistor, a drain of which is electrically connected to a source of the third transistor, a gate of which is electrically connected to the driver, and a source of which is grounded; an inductance device having a first end and a second end, the first end of the inductance device being electrically connected to the source of the third transistor and the drain of the fourth transistor, respectively, and the second end of the inductance device being electrically connected to the input end of the current limiting unit.
Optionally, the current limiting unit includes: the constant current module is provided with a first input end, a second input end and an output end, wherein the first input end of the constant current module is used for inputting a fourth enabling signal, and the second input end of the constant current module is electrically connected with the first output end of the voltage conversion unit; a fifth transistor, a drain electrode of which is electrically connected with the second output end of the constant current module, and a grid electrode of which is grounded; and a source electrode of the sixth transistor is electrically connected with the source electrode of the fifth transistor, a grid electrode of the sixth transistor is grounded, and a drain electrode of the sixth transistor is electrically connected with the input end of the second power supply module.
Optionally, the current limiting unit further includes: a seventh transistor, a drain of which is electrically connected to a gate of the fifth transistor, a gate of which is electrically connected to a drain of the fifth transistor, and a source of which is grounded; a first voltage stabilizing tube having a first end and a second end, wherein the first end of the first voltage stabilizing tube is electrically connected with the grid electrode of the fifth transistor and the drain electrode of the seventh transistor respectively, and the second end of the first voltage stabilizing tube is electrically connected with the source electrode of the fifth transistor; the second voltage stabilizing tube is provided with a first end and a second end, the first end of the second voltage stabilizing tube is electrically connected with the grid electrode of the sixth transistor, and the second end of the second voltage stabilizing tube is electrically connected with the source electrode of the fifth transistor and the source electrode of the sixth transistor respectively.
Optionally, the power supply control circuit further includes: the positive electrode of the first diode is electrically connected with the output end of the first power supply module; the positive electrode of the second diode is electrically connected with the second output end of the voltage conversion unit; and the second end of the switching device is electrically connected with the first end of the first load module.
Optionally, the power supply control circuit further includes: and the source electrode of the eighth transistor is electrically connected with the output end of the first power supply module, the drain electrode of the eighth transistor is electrically connected with the input end of the voltage conversion unit, and the grid electrode of the eighth transistor is used for inputting a fifth enabling signal.
Optionally, the power supply control circuit further includes: the second load module is provided with an input end, and the input end of the second load module is respectively and electrically connected with the second output end of the voltage conversion unit and the input end of the second power supply module.
Optionally, the power supply control circuit further includes: and a ninth transistor, wherein a drain electrode of the ninth transistor is electrically connected with the second output end of the voltage conversion unit, the input end of the second power supply module and the input end of the first load module, a source electrode of the ninth transistor is electrically connected with the input end of the second load module, and a grid electrode of the ninth transistor is used for inputting a sixth enabling signal.
According to another aspect of the present application, there is provided a power supply comprising: any one of the power supply control circuits.
According to another aspect of the present application, there is provided a vehicle including: any one of the power supply control circuits.
By applying the technical scheme of the application, the power supply control circuit comprises a first power supply module, a second power supply module and a power supply control circuit, wherein the first power supply module is provided with an output end; the voltage conversion unit is provided with an input end, a first output end and a second output end, and the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module; the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit; the first load module is provided with a first end and a second end, the first end of the first load module is electrically connected with the second output end of the voltage conversion unit, and the second end of the first load module is grounded; the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module. The circuit adopts the voltage conversion unit to convert high voltage into low voltage, and can charge the second power module with constant current through the current limiting unit, so that the first power module can be converted into a working state for uninterrupted power supply to a load from a charged state when abnormal, and the problem that the conventional power control circuit cannot be connected with a plurality of power modules in parallel, and the problem that other power modules continuously supply power to the load when the main power module is abnormal, and the redundancy requirement of a power supply cannot be met is solved.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiments of the application and together with the description serve to explain the application and do not constitute an undue limitation to the application. In the drawings:
fig. 1 shows a schematic configuration diagram of a power supply control circuit according to an embodiment of the present application;
FIG. 2 shows a specific schematic configuration of a power control circuit according to an embodiment of the present application;
fig. 3 shows a schematic configuration of another power supply control circuit according to an embodiment of the present application.
Wherein the above figures include the following reference numerals:
01. a first power module; 02. a second power module; 03. a first load module; 04. a second load module; 10. a voltage conversion unit; 11. a voltage conversion module; 111. an inductance device; 12. a driver; 13. a controller; 20. a current limiting unit; 21. a constant current module; 22. a first voltage stabilizing tube; 23. a second voltage stabilizing tube; 30. a first diode; 40. a second diode; 50. a switching device.
Detailed Description
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other. The present application will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
In order to make the present application solution better understood by those skilled in the art, the following description will be made in detail and with reference to the accompanying drawings in the embodiments of the present application, it is apparent that the described embodiments are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments herein without making any inventive effort, shall fall within the scope of the present application.
It should be noted that the terms "first," "second," and the like in the description and claims of the present application and the above figures are used for distinguishing between similar objects and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged where appropriate in order to describe the embodiments of the present application described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
It will be understood that when an element such as a layer, film, region, or substrate is referred to as being "on" another element, it can be directly on the other element or intervening elements may also be present. Furthermore, in the description and in the claims, when an element is described as being "connected" to another element, the element may be "directly connected" to the other element or "connected" to the other element through a third element.
As described in the background art, the existing scheme of applying the automatic driving platform of a small-sized vehicle (such as a small car) to a large-sized vehicle (such as a truck) cannot achieve the output power required by the vehicle regulations under the high-temperature condition, and cannot connect a plurality of power supply modules in parallel to the output end, and when the main power supply module is abnormal, no other power supply module continuously supplies power to the load, so that the redundancy requirement of the power supply cannot be met. In order to solve the problem that the existing power supply control circuit cannot be connected with a plurality of power supply modules in parallel, when the main power supply module is abnormal, no other power supply module continuously supplies power to a load, and the redundancy requirement of a power supply cannot be met, in a typical implementation mode of the power supply control circuit, a power supply and a vehicle are provided.
The existing voltage conversion unit can convert 24V into 12V, the power of the product is less than 1000W, the product conforming to the vehicle regulations is less, the output power of the common voltage conversion unit can reach 1600W at normal temperature, but when the ambient temperature rises to 65 degrees, the continuous output power of 1000W cannot be reached, the vehicle regulations cannot be met, and the existing power supply cannot be connected with a storage battery at the output end in parallel, so that the redundancy requirement of the power supply cannot be met.
In order to overcome the above-described problems, according to an embodiment of the present application, there is provided a power supply control circuit, fig. 1 is a schematic structural diagram of a power supply control circuit according to an embodiment of the present application, as shown in fig. 1, the circuit including: a first power module 01 having an output; a voltage conversion unit 10 having an input terminal, a first output terminal, and a second output terminal, wherein the input terminal of the voltage conversion unit 10 is electrically connected to the output terminal of the first power module 01; a current limiting unit 20 having an input terminal and an output terminal, the input terminal of the current limiting unit 20 being electrically connected to the first output terminal of the voltage converting unit 10; a first load module 03 having a first end and a second end, the first end of the first load module 03 being electrically connected to the second output end of the voltage conversion unit 10, the second end of the first load module 03 being grounded; the second power module 02 has an input terminal, and the input terminal of the second power module 02 is electrically connected to the second output terminal of the voltage conversion unit 10, the output terminal of the current limiting unit 20, and the input terminal of the first load module 03, respectively.
In practical applications, the first power module may fail, so that the second power module may be smoothly connected when the first power module fails, as shown in fig. 2, the power control circuit further includes: and a first transistor Q1, wherein a drain of the first transistor Q1 is electrically connected to the second output terminal of the voltage conversion unit 10, a source of the first transistor Q1 is electrically connected to the input terminal of the second power module 02, a gate of the first transistor Q1 is used for inputting a first enable signal EN1, and a driver connected to the gate of the first transistor Q1 for driving the first transistor Q1 may be LM5050.
Specifically, the first transistor is an NMOS transistor, where a gate of the first transistor may be connected to a zener diode for voltage regulation, and may be further connected to a transistor for inputting a first enable signal, where the transistor is an NMOS.
In order to connect the second power module more smoothly in case of a failure of the first power module and output a failure signal, as shown in fig. 2, the power control circuit further includes: and a second transistor Q2, wherein a drain of the second transistor Q2 is electrically connected to the second output terminal of the voltage conversion unit 10, a source of the second transistor Q2 is electrically connected to the input terminal of the first load module 03, and a gate of the second transistor Q2 is used for inputting a second enable signal EN2. The driver for driving the second transistor Q2 may be LTC7000.
Specifically, the second transistor is an NMOS transistor.
In order to convert high-voltage electricity into low-voltage electricity, as shown in fig. 2, the above-described voltage conversion unit 10 includes: a voltage conversion module 11 having a first end, a second end, a third end, and a fourth end, wherein the first end of the voltage conversion module 11 is electrically connected to the output end of the first power module 01, the second end of the voltage conversion module 11 is electrically connected to the input end of the current limiting unit 20, and the third end of the voltage conversion module 11 is grounded; a driver 12 having an input terminal and an output terminal, the output terminal of the driver 12 being electrically connected to the fourth terminal of the voltage conversion unit 10, the driver 12 being configured to drive the voltage conversion module 11 to realize a voltage conversion function; a controller 13 having an input terminal and an output terminal, the output terminal of the controller 13 being electrically connected to the input terminal of the driver 12, the input terminal of the controller 13 being for inputting the third enable signal EN3, the controller 13 being for controlling the driver 12 to drive the voltage converting unit 10. The driver 12 may be an LTC7060, the controller 13 may be an LTC7871, the input high voltage may be 24V, and the output low voltage may be 14.4V, 14.3V, or the like.
In an alternative example, as shown in fig. 2, the voltage conversion module 11 includes: a third transistor Q3, wherein a drain of the third transistor Q3 is electrically connected to an output terminal of the first power module 01, and a gate of the third transistor Q3 is electrically connected to the driver 12; a fourth transistor Q4, a drain of the fourth transistor Q4 is electrically connected to a source of the third transistor, a gate of the fourth transistor Q4 is electrically connected to the driver 12, and a source of the fourth transistor Q4 is grounded; an inductor 111 having a first terminal and a second terminal, the first terminal of the inductor 111 being electrically connected to the source of the third transistor and the drain of the fourth transistor, respectively, and the second terminal of the inductor 111 being electrically connected to the input terminal of the current limiting unit 20. The third transistor Q3 is an NMOS, the fourth transistor Q4 is an NMOS, the number of the voltage conversion modules is six, each voltage conversion module is connected to one LTC7060 driver, that is, there are six LTC7060 drivers, and the controller LTC7871 is a six-phase controller.
Compared to the voltage conversion power supply on the market, the power supply control circuit in this example not only has a high power output, can meet the requirements of the vehicle regulations, but also can charge the second power supply module with a constant current, and as shown in fig. 2, the current limiting unit 20 includes: a constant current module 21 having a first input terminal, a second input terminal, and an output terminal, wherein the first input terminal of the constant current module 21 is used for inputting a fourth enable signal EN4, and the second input terminal of the constant current module 21 is electrically connected to the first output terminal of the voltage conversion unit 10; a fifth transistor Q5, wherein a drain of the fifth transistor Q5 is electrically connected to the second output terminal of the constant current module 21, and a gate of the fifth transistor Q5 is grounded; and a sixth transistor Q6, wherein a source of the sixth transistor Q6 is electrically connected to a source of the fifth transistor Q5, a gate of the sixth transistor Q6 is grounded, and a drain of the sixth transistor Q6 is electrically connected to an input terminal of the second power supply module 02. Wherein, the fifth transistor Q5 and the sixth transistor Q6 are PMOS, the constant current module is MPQ4210, and the gate of the sixth transistor Q6 is connected to the resistor module and then to the ground.
In one aspect, in order to make the circuit more stable, as shown in fig. 2, the current limiting unit 20 further includes: a seventh transistor Q7, wherein a drain of the seventh transistor Q7 is electrically connected to a gate of the fifth transistor Q5, a gate of the seventh transistor Q7 is electrically connected to a drain of the fifth transistor Q5, and a source of the seventh transistor Q7 is grounded; a first voltage regulator tube 22 having a first end and a second end, wherein the first end of the first voltage regulator tube 22 is electrically connected with the grid electrode of the fifth transistor Q5 and the drain electrode of the seventh transistor Q7, and the second end of the first voltage regulator tube 22 is electrically connected with the source electrode of the fifth transistor Q5; a second voltage regulator 23 having a first end and a second end, wherein the first end of the second voltage regulator 23 is electrically connected to the gate of the sixth transistor Q6, and the second end of the second voltage regulator 23 is electrically connected to the source of the fifth transistor Q5 and the source of the sixth transistor Q6, respectively. The seventh transistor Q7 is an NMOS, a resistor module is further disposed between the gate of the seventh transistor Q7 and the drain of the fifth transistor Q5, the gate of the seventh transistor Q7 is further grounded through another resistor module, a resistor module is also disposed between the drain of the seventh transistor Q7 and the gate of the fifth transistor Q5, and the resistor module and the first voltage regulator are connected in parallel between the gate and the source of the fifth transistor.
In the case that one of the first power supply module and the second power supply module can work normally, the power supply can supply power to the load module at the subsequent stage, as shown in fig. 3, the power supply control circuit further includes: a first diode 30, wherein the positive electrode of the first diode 30 is electrically connected with the output end of the first power module 01; a second diode 40, wherein an anode of the second diode 40 is electrically connected to a second output terminal of the voltage conversion unit 10; and a switching device 50 having a first terminal and a second terminal, wherein the first terminal of the switching device 50 is electrically connected to the negative electrode of the first diode 30 and the negative electrode of the second diode 40, respectively, and the second terminal of the switching device 50 is electrically connected to the first terminal of the first load module 03. Wherein the switching device may be a mechanical switch.
In order to prevent circuit failure caused by reverse connection of the circuit, as shown in fig. 2, the power control circuit further includes: an eighth transistor Q8, wherein a source of the eighth transistor Q8 is electrically connected to the output terminal of the first power module 01, a drain of the eighth transistor Q8 is electrically connected to the input terminal of the voltage conversion unit 10, and a gate of the eighth transistor Q8 is used for inputting a fifth enable signal EN5. The driver for driving the eighth transistor Q8 is LM5050, where the gate of the eighth transistor may be connected to a zener diode for voltage regulation, and may be further connected to a transistor for inputting a fifth enable signal, and the transistor is NMOS.
Specifically, the third transistor Q3 and the fourth transistor Q4 described above may also be connected to the driver LM5050 for driving the eighth transistor Q8.
Also, in addition to controlling the main load module, the circuit may be used to control other load modules, as shown in fig. 2, where the power control circuit further includes: the second load module 04 has an input terminal, and the input terminal of the second load module 04 is electrically connected to the second output terminal of the voltage conversion unit 10 and the input terminal of the second power module 02, respectively.
For stably supplying power to the load at the subsequent stage, as shown in fig. 2, the power control circuit further includes: and a ninth transistor Q9, wherein a drain of the ninth transistor Q9 is electrically connected to the second output terminal of the voltage conversion unit 10, the input terminal of the second power supply module 02, and the input terminal of the first load module 03, a source of the ninth transistor Q9 is electrically connected to the input terminal of the second load module 04, and a gate of the ninth transistor Q9 is used for inputting a sixth enable signal EN6. The ninth transistor Q9 is an NMOS, a gate of the ninth transistor Q9 may be connected to an NMOS, a gate of the NMOS is used for inputting a sixth enable signal EN6, a source of the NMOS is grounded, sources of the ninth transistor Q9 are respectively electrically connected to two zener diodes in the second load module, each zener diode is further connected to one zener diode, then connected to the power management device TPS25940, and finally connected to a fan, and a source of the ninth transistor Q9 is further connected to the buck regulator module LDO (low dropout regulator, low dropout linear regulator). The LDO may be NCV8711ASNADJT1G.
In practical application, the NMOS devices may be replaced with PMOS devices, and similarly, the PMOS devices may be replaced with NMOS devices, and the circuit may be adjusted according to the actual situation according to the MOS change.
The power supply control circuit comprises a first power supply module, a second power supply module and a power supply control circuit, wherein the first power supply module is provided with an output end; the voltage conversion unit is provided with an input end, a first output end and a second output end, and the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module; the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit; a first load module having a first end and a second end, the first end of the first load module being electrically connected to the second output end of the voltage conversion unit, the second end of the first load module being grounded; the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module. The circuit adopts the voltage conversion unit to convert high voltage into low voltage, and can charge the second power module with constant current through the current limiting unit, so that the first power module can be converted into a working state for uninterrupted power supply to a load from a charged state when abnormal, and the problem that the conventional power control circuit cannot be connected with a plurality of power modules in parallel, and the problem that other power modules continuously supply power to the load when the main power module is abnormal, and the redundancy requirement of a power supply cannot be met is solved.
There is also provided, in accordance with an embodiment of the present application, a power supply including: any one of the above power supply control circuits.
There is also provided, in accordance with an embodiment of the present application, a vehicle including: any one of the above power supply control circuits.
It should also be noted that 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 an element.
From the above description, it can be seen that the above embodiments of the present application achieve the following technical effects:
1) The power supply control circuit comprises a first power supply module, a second power supply module and a power supply control circuit, wherein the first power supply module is provided with an output end; the voltage conversion unit is provided with an input end, a first output end and a second output end, and the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module; the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit; a first load module having a first end and a second end, the first end of the first load module being electrically connected to the second output end of the voltage conversion unit, the second end of the first load module being grounded; the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module. The circuit adopts the voltage conversion unit to convert high voltage into low voltage, and can charge the second power module with constant current through the current limiting unit, so that the first power module can be converted into a working state for uninterrupted power supply to a load from a charged state when abnormal, and the problem that the conventional power control circuit cannot be connected with a plurality of power modules in parallel, and the problem that other power modules continuously supply power to the load when the main power module is abnormal, and the redundancy requirement of a power supply cannot be met is solved.
The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (15)

1. A power supply control circuit, comprising:
a first power module having an output;
the voltage conversion unit is provided with an input end, a first output end and a second output end, and the input end of the voltage conversion unit is electrically connected with the output end of the first power supply module;
the input end of the current limiting unit is electrically connected with the first output end of the voltage conversion unit;
the first load module is provided with a first end and a second end, the first end of the first load module is electrically connected with the second output end of the voltage conversion unit, and the second end of the first load module is grounded;
the second power module is provided with an input end, and the input end of the second power module is respectively and electrically connected with the second output end of the voltage conversion unit, the output end of the current limiting unit and the input end of the first load module.
2. The power control circuit of claim 1, wherein the power control circuit further comprises:
the drain electrode of the first transistor is electrically connected with the second output end of the voltage conversion unit, the source electrode of the first transistor is electrically connected with the input end of the second power supply module, and the grid electrode of the first transistor is used for inputting a first enabling signal.
3. The power control circuit of claim 2 wherein the first transistor is an NMOS transistor.
4. The power control circuit of claim 1, wherein the power control circuit further comprises:
and the drain electrode of the second transistor is electrically connected with the second output end of the voltage conversion unit, the source electrode of the second transistor is electrically connected with the input end of the first load module, and the grid electrode of the second transistor is used for inputting a second enabling signal.
5. The power control circuit of claim 4 wherein the second transistor is an NMOS transistor.
6. The power supply control circuit according to claim 1, wherein the voltage conversion unit includes:
the voltage conversion module is provided with a first end, a second end, a third end and a fourth end, the first end of the voltage conversion module is electrically connected with the output end of the first power supply module, the second end of the voltage conversion module is electrically connected with the input end of the current limiting unit, and the third end of the voltage conversion module is grounded;
the driver is provided with an input end and an output end, the output end of the driver is electrically connected with the fourth end of the voltage conversion unit, and the driver is used for driving the voltage conversion module to realize a voltage conversion function;
the controller is provided with an input end and an output end, the output end of the controller is electrically connected with the input end of the driver, the input end of the controller is used for inputting a third enabling signal, and the controller is used for controlling the driver to drive the voltage conversion unit.
7. The power control circuit of claim 6, wherein the voltage conversion module comprises:
a third transistor, a drain electrode of which is electrically connected to an output terminal of the first power supply module, and a gate electrode of which is electrically connected to the driver;
a fourth transistor, a drain of which is electrically connected to a source of the third transistor, a gate of which is electrically connected to the driver, and a source of which is grounded;
an inductance device having a first end and a second end, the first end of the inductance device being electrically connected to the source of the third transistor and the drain of the fourth transistor, respectively, and the second end of the inductance device being electrically connected to the input end of the current limiting unit.
8. The power control circuit of claim 1, wherein the current limiting unit comprises:
the constant current module is provided with a first input end, a second input end and an output end, wherein the first input end of the constant current module is used for inputting a fourth enabling signal, and the second input end of the constant current module is electrically connected with the first output end of the voltage conversion unit;
a fifth transistor, a drain electrode of which is electrically connected with the second output end of the constant current module, and a grid electrode of which is grounded;
and a source electrode of the sixth transistor is electrically connected with the source electrode of the fifth transistor, a grid electrode of the sixth transistor is grounded, and a drain electrode of the sixth transistor is electrically connected with the input end of the second power supply module.
9. The power control circuit of claim 8, wherein the current limiting unit further comprises:
a seventh transistor, a drain of which is electrically connected to a gate of the fifth transistor, a gate of which is electrically connected to a drain of the fifth transistor, and a source of which is grounded;
a first voltage stabilizing tube having a first end and a second end, wherein the first end of the first voltage stabilizing tube is electrically connected with the grid electrode of the fifth transistor and the drain electrode of the seventh transistor respectively, and the second end of the first voltage stabilizing tube is electrically connected with the source electrode of the fifth transistor;
the second voltage stabilizing tube is provided with a first end and a second end, the first end of the second voltage stabilizing tube is electrically connected with the grid electrode of the sixth transistor, and the second end of the second voltage stabilizing tube is electrically connected with the source electrode of the fifth transistor and the source electrode of the sixth transistor respectively.
10. The power supply control circuit according to any one of claims 1 to 9, characterized in that the power supply control circuit further comprises:
the positive electrode of the first diode is electrically connected with the output end of the first power supply module;
the positive electrode of the second diode is electrically connected with the second output end of the voltage conversion unit;
and the second end of the switching device is electrically connected with the first end of the first load module.
11. The power supply control circuit according to any one of claims 1 to 9, characterized in that the power supply control circuit further comprises:
and the source electrode of the eighth transistor is electrically connected with the output end of the first power supply module, the drain electrode of the eighth transistor is electrically connected with the input end of the voltage conversion unit, and the grid electrode of the eighth transistor is used for inputting a fifth enabling signal.
12. The power supply control circuit according to any one of claims 1 to 9, characterized in that the power supply control circuit further comprises:
the second load module is provided with an input end, and the input end of the second load module is respectively and electrically connected with the second output end of the voltage conversion unit and the input end of the second power supply module.
13. The power control circuit of claim 12, wherein the power control circuit further comprises:
and a ninth transistor, wherein a drain electrode of the ninth transistor is electrically connected with the second output end of the voltage conversion unit, the input end of the second power supply module and the input end of the first load module, a source electrode of the ninth transistor is electrically connected with the input end of the second load module, and a grid electrode of the ninth transistor is used for inputting a sixth enabling signal.
14. A power supply, comprising: the power supply control circuit of any one of claims 1 to 13.
15. A vehicle, characterized by comprising: the power supply control circuit of any one of claims 1 to 13.
CN202211733385.3A 2022-12-30 2022-12-30 Power supply control circuit, power supply and vehicle Pending CN116094320A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202211733385.3A CN116094320A (en) 2022-12-30 2022-12-30 Power supply control circuit, power supply and vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211733385.3A CN116094320A (en) 2022-12-30 2022-12-30 Power supply control circuit, power supply and vehicle

Publications (1)

Publication Number Publication Date
CN116094320A true CN116094320A (en) 2023-05-09

Family

ID=86205730

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202211733385.3A Pending CN116094320A (en) 2022-12-30 2022-12-30 Power supply control circuit, power supply and vehicle

Country Status (1)

Country Link
CN (1) CN116094320A (en)

Similar Documents

Publication Publication Date Title
US8829713B2 (en) Power conversion circuit and power conversion circuit system
US20150183334A1 (en) Apparatus and method for providing multi-voltage output of low voltage dc-dc converter of eco-friendly vehicle
US9882491B2 (en) Power supply system
US7301309B2 (en) Method and device for providing the supply voltage for the loads of a vehicle on-board electrical system, using a plurality of generators
EP3627678B1 (en) Power conversion system with abnormal energy protection and method of operating the same
US8766478B2 (en) Power system and control method thereof
EP3316274B1 (en) Driver circuit for the operation of a relay
US9112408B2 (en) Provision of an output voltage from a wide range variable and low input voltage
EP3996225B1 (en) Power supply switching control system
US20050134236A1 (en) Circuit arrangement for stabilizing a supply voltage and method for operating said circuit arrangement
US20200101625A1 (en) Robotic system
US10476385B2 (en) DC-DC converter system, DC voltage supply system and printed circuit board for a DC-DC converter system
CN116094320A (en) Power supply control circuit, power supply and vehicle
Kim et al. Start-up control to prevent overcurrent during hot swap in paralleled DC–DC converters
CN113922447B (en) Vehicle power supply circuit, equipment and car
CN115085357A (en) Power supply switching device and unmanned vehicle
US11476690B2 (en) Power supply system
CN210867513U (en) Power supply framework of electric control unit
EP3812205A1 (en) Power supply system
CN111327194B (en) Power converter and power supply device sharing direct-current power supply
US10879799B2 (en) Power transmission system
CN111600365A (en) Charging circuit, auxiliary power supply and operation equipment
CN103828205A (en) Power supply for controlling a power switch
CN219477659U (en) Power supply circuit and power supply system
KR102475412B1 (en) Power supply system of eletric vhiecle with fail safe function and fail safe method thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination