Power supply device, power supply control system and terminal

Abstract

A power supply device, a power supply control system and a terminal relate to the technical field of electronic circuits. The power supply device comprises a first power supply, a first control unit, a first power distribution unit and a first switch unit. Wherein the first end of the first power distribution unit is connected with a first power supply, and the second end of the first power distribution unit is connected with the first end of the first switch unit; the second end of the first switch unit is connected with the first motor. The first control unit is used for controlling the first switch unit to be closed and controlling the first power distribution unit to start power distribution. The power supply device is used for supplying power to the first motor. The power supply device can reduce the damage rate of the compressor of the blast pump motor and improve the reliability.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of electronic circuit, and particularly relates to a power supply device, a power supply control system and a terminal. BACKGROUND

[0002] The supply of high-pressure gas in air suspension systems has so far mainly used electrically driven compressors, which essentially compress the gas by changing the working volume of the cylinder. The electrical construction and control logic of such miniature compressors is relatively straightforward, with the suspension controller switching on and off the air pump motor depending on system pressure, temperature, operating time, etc. The air pump motor cannot work for a long time, and if the total load and temperature spectrum exceed the predetermined range, it will cause damage to the compressor.

[0003] However, the current power supply scheme for the air pump motor can cause a high damage rate of the compressor of the air pump motor and poor reliability. CONTENT OF THE INVENTION

[0004] The embodiments of the present application provide a power supply device, a power supply control system and a terminal, which can reduce the damage rate of the compressor of the air pump motor and improve the reliability.

[0005] In a first aspect, the embodiments of the present application provide a power supply device applied to a first motor, which comprises a first power supply, a first control unit, a first power distribution unit and a first switch unit. The first end of the first power distribution unit is connected with the first power supply, the second end of the first power distribution unit is connected with the first end of the first switch unit, and the second end of the first switch unit is connected with the first motor. The first control unit is configured to control the first switch unit to be closed and control the first power distribution unit to start power distribution. The power supply device is configured to supply power to the first motor.

[0006] In the embodiments of the present application, the power supply device is provided, and the first switch unit in the power supply device is controlled to be closed and the first power distribution unit is controlled to start power distribution, so as to supply power to the first motor. It can be understood that the first control unit jointly controls the first switch unit and the first power distribution unit, and the first motor can be supplied with power only when the first switch unit is closed and the first power distribution unit starts power distribution. If any one condition is not met, the power supply to the first motor will be stopped. Therefore, the software and / or hardware failure of the first power distribution unit can be avoided to cause the power supply to the first motor out of control, so as to reduce the damage rate of the compressor of the air pump motor and improve the reliability.

[0007] Optionally, the third end of the first switch unit is connected with the first control unit. The first control unit can send a control instruction through the connection channel between the third end of the first switch unit and the first control unit, so as to control the first switch unit to be closed.

[0008] Optionally, the fourth end of the first switch unit is grounded.

[0009] Optionally, the first power distribution unit is connected to the first control unit via wired or wireless means. The first control unit can communicate via wired or wireless means with the first power distribution unit through the connection channel to send control commands to control the first power distribution unit to start power distribution.

[0010] In one possible implementation, the first switching unit closes before the first power distribution unit starts power distribution.

[0011] In this embodiment, before controlling the first power distribution unit to start power distribution, it is necessary to control the first switch unit to close first. This can avoid the impact of intrusion current and shutdown current on the first switch unit when a large current load is directly connected, and improve the electrical life of the first switch unit.

[0012] Optionally, since the first switching unit is actually under load after the load circuit stabilizes, the current specification of the first switching unit can be appropriately reduced to reduce costs and optimize noise, vibration, and harshness (NVH).

[0013] In one possible implementation, if the operating time of the first motor exceeds a first threshold and / or the temperature of the first motor exceeds a second threshold, the first control unit is further configured to control the first power distribution unit to shut down power distribution and / or control the first switching unit to disconnect.

[0014] In this embodiment, the first control unit jointly controls the first switching unit and the first power distribution unit. When the first switching unit is disconnected and / or the first power distribution unit shuts off power distribution, the power supply to the first motor can be stopped. By utilizing the dual-path control of the first switching unit and the first power distribution unit, it is possible to avoid uncontrolled power supply to the first motor due to software and / or hardware failure of the first power distribution unit, thereby reducing the damage rate of the compressor of the air pump motor and improving reliability.

[0015] Optionally, the first threshold and the second threshold are not fixed values ​​and can be adjusted according to different application scenarios. This application embodiment does not impose any restrictions on this.

[0016] In one possible implementation, if the first switching unit is stuck together, the first control unit is also used to control the first power distribution unit to shut down the power distribution.

[0017] In this embodiment, when the first switch unit is stuck together, the power supply to the first motor can be stopped by controlling the first power distribution unit to shut down the power distribution. By using the dual-path control of the first switch unit and the first power distribution unit, the power supply to the first motor can be prevented from becoming uncontrolled due to the first switch unit sticking together, thereby reducing the damage rate of the compressor of the air pump motor and improving reliability.

[0018] Optionally, the first switch unit is stuck, which means that the fixed contact and the movable contact of the first switch unit are fused or welded together, and thus cannot be normally controlled to be disconnected.

[0019] In a possible implementation, in a case where the first control unit controls the first switch unit to be disconnected and controls the first power distribution unit to start power distribution, and the first power distribution unit collects the first loop current for powering the first motor and the first loop current is greater than 0, the first control unit is further configured to determine that the first switch unit is stuck.

[0020] In this embodiment, the sticking problem of the first switch unit can be detected by collecting the first loop current for powering the first motor by the first power distribution unit, so that the power supply to the first motor can be stopped in time, and the reliability of the power supply system can be ensured.

[0021] In a possible implementation, the first end of the first switch unit is connected to the first control unit; the first control unit is further configured to collect the second loop current for powering the first motor through a connection channel between the first end of the first switch unit and the first control unit; and in a case where the first control unit controls the first switch unit to be disconnected and controls the first power distribution unit to start power distribution, and the second loop current is greater than 0, the first control unit is further configured to determine that the first switch unit is stuck.

[0022] In this embodiment, the sticking problem of the first switch unit can be detected by collecting the second loop current for powering the first motor through the connection channel between the first end of the first switch unit and the first control unit, the power supply to the first motor can be stopped in time, and the power supply system can be ensured to be reliable, which can avoid the failure of current collection of the first power distribution unit or network communication failure to timely detect the sticking problem of the first switch unit.

[0023] In a possible implementation, the third end of the first switch unit is connected to the first control unit; the first control unit is further configured to collect the first voltage through a connection channel between the third end of the first switch unit and the first control unit; and in a case where the first control unit controls the first switch unit to be disconnected and the first voltage is greater than 0, the first control unit is further configured to determine that the first switch unit is faulty.

[0024] In this embodiment, the first voltage collected through the connection channel between the third end of the first switch unit and the first control unit can be used to detect whether the first switch unit is faulty, and if the first voltage is greater than 0, it indicates that the first switch unit cannot be normally disconnected, so that the first switch unit fault can be reported in time, and the reliability of the power supply system can be ensured.

[0025] In a possible implementation, when the duration of the abnormal communication between the first control unit and the first power distribution unit is greater than a third threshold, the first control unit is further configured to control the first power distribution unit to turn off power distribution and / or control the first switch unit to be disconnected.

[0026] In this embodiment, the communication between the first power distribution unit and the first control unit can be checked to determine whether it is normal, so that the first power distribution unit can be controlled to turn off power distribution and / or the first switch unit can be controlled to be disconnected in an abnormal situation, and power supply to the first motor can be stopped in time, thereby ensuring the reliability of the power supply system.

[0027] Optionally, the third threshold is not a fixed value and can be adjusted according to different application scenarios, which is not limited in the embodiments of the present application.

[0028] In a possible implementation, when the duration of continuous operation of the first power distribution unit is greater than a fourth threshold and / or the first control unit fails, the first power distribution unit turns off power distribution.

[0029] In this embodiment, the first power distribution unit is provided with control logic of the duration of continuous operation, so that the first power distribution unit turns off power distribution after a certain time of continuous operation, and / or the first power distribution unit turns off power distribution when the first control unit fails, and power supply to the first motor can be stopped in time, thereby ensuring the reliability of the power supply system.

[0030] Optionally, the fourth threshold is not a fixed value and can be adjusted according to different application scenarios, which is not limited in the embodiments of the present application.

[0031] In a possible implementation, the power supply device further includes a second switch unit. The second switch unit is connected in series with the first switch unit, and the first control unit is configured to control the second switch unit to be closed.

[0032] In this embodiment, the first control unit controls the second switch unit in the power supply device to be closed, and jointly controls the first switch unit in the power supply device to be closed and the first power distribution unit to turn on power distribution, so as to supply power to the first motor. It can be understood that the first control unit jointly controls the first switch unit, the first power distribution unit and the second switch unit, and power can be supplied to the first motor only when the first switch unit is closed, the second switch unit is closed and the first power distribution unit is turned on. If any of the conditions is not met, power supply to the first motor will be stopped, so that the software and / or hardware failure of the first power distribution unit can be avoided to cause out-of-control power supply to the first motor, thereby reducing the damage rate of the compressor of the air pump motor and improving the reliability.

[0033] Optionally, the second switch unit can be in a normally closed state, and the requirement for electrical life is relatively low.

[0034] In a possible implementation, the first control unit is configured to control the second switch unit to be turned off in the case that the first switch unit is stuck and the first power distribution unit is out of control.

[0035] In the embodiment, in the case that the first switch unit is stuck and the first power distribution unit is out of control, the power supply to the first motor can be cut off by controlling the second switch unit to be turned off, thereby ensuring the safety and reliability of the power supply system.

[0036] In a second aspect, an embodiment of the present application provides a power supply control system, including a first motor and the power supply device as described in the first aspect; and the power supply device is configured to supply power to the first motor.

[0037] In a third aspect, an embodiment of the present application provides a terminal, including at least one power supply device as described in the first aspect, or the power supply control system as described in the second aspect.

[0038] Optionally, the terminal can be a vehicle, such as a car, a truck, an aircraft, a drone, a slow transport vehicle, a space vehicle, or a ship, and the like, and the present application is not limited thereto. BRIEF DESCRIPTION OF DRAWINGS

[0039] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed to be used in the embodiments of the present application will be briefly introduced as follows. Obviously, the drawings described below are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0040] Figure 1 A structural schematic diagram of a power supply device provided by an embodiment of the present application;

[0041] Figure 2 A structural schematic diagram of another power supply device provided by an embodiment of the present application;

[0042] Figure 3 A structural schematic diagram of another power supply device provided by an embodiment of the present application;

[0043] Figure 4 A structural schematic diagram of another power supply device provided by an embodiment of the present application;

[0044] Figure 5 A structural schematic diagram of another power supply device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present application more clear, the embodiments of the present application will be described in combination with the drawings in the embodiments of the present application.

[0046] The terms "first" and "second" and the like in the description and in the claims of this application are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "comprises", "comprising", "includes", "including", "has", "having" and the like are intended to cover a non-exclusive inclusion such that a process, method, article, or apparatus that comprises, has, includes, or the like a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0047] Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase "in an embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are they necessarily all directed to the same embodiments, or alternative or alternative embodiments. It will be appreciated by those skilled in the art that, in various embodiments of the application, the terms and / or descriptions used in the specification can be consistent, and can be mutually referred to, between various embodiments, unless specifically stated otherwise and logically contradictory, and technical features in different embodiments can be combined to form new embodiments according to their inherent logical relationship.

[0048] It should be understood that in this application, "at least one" means one or more, "multiple" means two or more, "at least two" means two or three and three or more, and "and / or" is used to describe the relationship between the associated objects, which means that there can be three relationships, for example, "A and / or B" can mean that there are three cases: only A, only B, and A and B at the same time, where A and B can be singular or plural. The character " / " generally represents an "or" relationship between the associated objects. "At least one of the following" or similar expressions means any combination of these items, including any combination of single or multiple items. For example, at least one of a, b or c, can mean a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0049] It should be noted that in this application, "indication" can include direct indication, indirect indication, display indication, and implicit indication. When describing a certain indication information for indicating A, it can be understood that the indication information carries A, directly indicates A, or indirectly indicates A.

[0050] In the present application, the information indicated by the indication information is referred to as the to-be-indicated information. In the specific implementation process, there are many ways to indicate the to-be-indicated information, for example, but not limited to, the to-be-indicated information can be directly indicated, such as the to-be-indicated information itself or the index of the to-be-indicated information. The to-be-indicated information can also be indirectly indicated by indicating other information, wherein the other information and the to-be-indicated information have an association relationship. The to-be-indicated information can also be indicated only by a part of the to-be-indicated information, and the other part of the to-be-indicated information is known or agreed in advance. For example, the indication of specific information can also be achieved by means of the arrangement order of each information agreed in advance (for example, specified by a protocol), thereby reducing the indication overhead to a certain extent. The to-be-indicated information can be sent as a whole, or can be sent separately into multiple sub-information, and the sending period and / or sending opportunity of the sub-information can be the same or different. The specific sending method is not limited in the present application. The sending period and / or sending opportunity of the sub-information can be predefined, for example, predefined according to a protocol, or configured by the transmitting end device by sending configuration information to the receiving end device.

[0051] It should be noted that in the present application, "sending" can be understood as "output", and "receiving" can be understood as "input". "Sending information to A", wherein "to A" only indicates the direction of information transmission, and A is the destination, without limiting that "sending information to A" must be direct sending on the air interface. "Sending information to A" includes directly sending information to A, and also includes indirectly sending information to A through a transmitter, so "sending information to A" can also be understood as "outputting information to A". Similarly, "receiving information from A" indicates that the source of the information is A, including directly receiving information from A, and also including indirectly receiving information from A through a receiver, so "receiving information from A" can also be understood as "inputting information from A".

[0052] The present application provides a power supply device, a power supply control system and a terminal, which are applied to the technical field of electronic circuits, such as the power supply control of the air suspension system of a vehicle. In order to better understand the technical solutions of the present application, the related terms and concepts that may be involved in the embodiments of the present application will be introduced first.

[0053] Intelligent distribution unit (IDU): It is a kind of power distribution and management equipment integrated with advanced technology and intelligent function. It uses advanced sensors, communication technology and data processing technology to realize real-time monitoring, control, protection and management of power system. Intelligent distribution box has multiple functions, including measurement of power parameters, monitoring of power quality, detection and positioning of faults, remote control, etc., which provides strong guarantee for safe and efficient operation of power system.

[0054] The supply of high-pressure gas in air suspension systems has so far mainly used electrically driven compressors, which essentially compress the gas by changing the working volume of the cylinder. The electrical configuration and control logic of such miniature compressors are relatively straightforward, and the suspension controller switches on and off the air pump motor depending on the system pressure, temperature, operating time, etc.

[0055] The air pump motor cannot work for a long time, and if the total load and temperature spectrum exceed the predetermined range, it will cause the compressor to be damaged. Generally, if the total load (≥ 25% duty cycle) and temperature spectrum (≥ 125℃) exceed the predetermined range, it will cause the compressor to be damaged.

[0056] However, the power supply scheme for the air pump motor can cause a high failure rate of the compressor of the air pump motor and poor reliability.

[0057] For details, please refer to Figure 1 , Figure 1 A structure diagram of a power supply device provided for an embodiment of the present application.

[0058] As shown in Figure 1 , the power supply device includes but is not limited to a power supply, a suspension controller, a fuse box, and a relay.

[0059] The power supply is connected to the fuse box, the fuse box is connected to the relay, the relay is connected to the air pump motor, and the air pump motor is grounded.

[0060] Optionally, the power supply can be composed of a storage battery and a direct current to direct current (DC-DC) converter, and can output direct current (or approximately direct current) power supply of different voltages.

[0061] The suspension controller controls the power supply to the air pump motor by controlling the closing or opening of the relay.

[0062] However, in the above-mentioned "relay + fuse box" power supply scheme, the conventional fuse is affected by process, overcurrent, temperature, etc., and the melting time is uncontrollable, and the (normally open) relay is generally a non-metal oxide semiconductor (MOS) tube, and the random hardware failure rate is high. The power supply for the air pump motor is uncontrollable, which can cause a high failure rate of the compressor of the air pump motor and poor reliability.

[0063] For details, please refer to Figure 2 , Figure 2 A structure diagram of another power supply device provided for an embodiment of the present application.

[0064] As shown in Figure 2 , the power supply device includes but is not limited to a power supply, a suspension controller, and an IDU.

[0065] The power supply is connected with the IDU, the IDU is connected with the air pump motor, and the air pump motor is grounded.

[0066] Optionally, the power supply can be composed of a storage battery and a DC-DC converter, and can output direct current (or approximate direct current) power supplies of different voltages.

[0067] The suspension controller controls the power supply for the air pump motor by controlling the IDU to turn on or turn off the power distribution function.

[0068] However, in the power supply scheme of the above-mentioned IDU, there is a single point failure problem. If there is a problem in the software, hardware, etc. of the IDU, such as the IDU being unable to respond to the suspension controller's disconnection control instruction, the air pump motor will be abnormally powered, making the power supply for the air pump motor uncontrollable, resulting in a high damage rate of the compressor of the air pump motor and poor reliability.

[0069] In view of this, the embodiments of the present application provide a power supply device applied to the technical field of electronic circuits, such as the power supply control of the air pump motor of the air suspension system of a vehicle, which can reduce the damage rate of the compressor of the air pump motor and improve the reliability.

[0070] Please refer to Figure 3 , Figure 3 Another structure diagram of the power supply device provided by the embodiments of the present application.

[0071] As shown in Figure 3 , the power supply device 30 includes but is not limited to:

[0072] A first power supply 301, a first control unit 302, a first power distribution unit 303, and a first switch unit 304.

[0073] The first end 303a of the first power distribution unit 303 is connected with the first power supply 301, the second end 303b of the first power distribution unit 303 is connected with the first end 304a of the first switch unit 304, the second end 304b of the first switch unit 304 is connected with the first motor, and the first motor is grounded.

[0074] The first control unit 302 is used to control the first switch unit 304 to be closed and control the first power distribution unit 303 to turn on the power distribution, and the power supply device 30 is used to supply power for the first motor.

[0075] Optionally, the first power supply 301 can be composed of a storage battery and a DC-DC converter, and can output direct current (or approximate direct current) power supplies of different voltages.

[0076] Optionally, the first control unit 302 can be a device with a processor / chip that can execute computer-executable instructions, or can be a processor / chip that can execute computer-executable instructions to output control instructions to implement control of power supply for the first motor.

[0077] Optionally, the first power distribution unit 303 can include, but is not limited to, an IDU. The fast turn-off characteristics (up to hundreds of microseconds us level) of metal oxide semiconductor field effect transistors (MOSFETs) in the IDU can achieve fast disconnection of power supply for the first motor.

[0078] Optionally, the first switch unit 304 can include, but is not limited to, a relay.

[0079] Optionally, the first motor can include, but is not limited to, a pump motor. It can be understood that the power supply device in the embodiments of the present application can be applied not only to the pump motor, but also to other redundant power supply solutions of charging devices that are at risk of power supply for a long time, and the embodiments of the present application do not limit this.

[0080] It can be understood that the first control unit 302 jointly controls the first switch unit 304 and the first power distribution unit 303, and power supply for the first motor can only be provided when the first switch unit 304 is closed and the first power distribution unit 303 is turned on. If either condition is not met, power supply for the first motor will be stopped, thus avoiding the loss of control of power supply for the first motor caused by software and / or hardware failure of the first power distribution unit 303, thereby reducing the damage rate of the compressor of the first motor and improving reliability.

[0081] Optionally, the third end 304c of the first switch unit 304 is connected to the first control unit 302, and the first control unit 302 can send control instructions through the connection channel between the third end 304c of the first switch unit 304 to control the first switch unit 304 to be closed.

[0082] Optionally, the fourth end of the first switch unit 304 is grounded.

[0083] Optionally, the third end 303c of the first power distribution unit 303 is connected to the first control unit 302 in a wired or wireless manner, for example, through a controller area network (CAN) bus. The first control unit 302 can send control instructions through wired or wireless communication between the third end 303c of the first power distribution unit 303 to control the first power distribution unit 303 to be turned on.

[0084] In a possible embodiment, the first switch unit 304 is closed at a time point before the first power distribution unit 303 starts to distribute power.

[0085] It can be understood that, before the first power distribution unit 303 is controlled to start to distribute power, the first switch unit 304 needs to be controlled to be closed first, so as to avoid the impact of inrush current and off current on the first switch unit 304 when the large-current load is directly connected, and improve the electrical life of the first switch unit 304.

[0086] Optionally, since the first switch unit 304 actually carries a load after the load loop is stabilized, the current specification of the first switch unit 304 can be appropriately reduced, so as to reduce cost and optimize noise, vibration and harshness (NVH).

[0087] In a possible embodiment, when the working duration of the first motor is greater than a first threshold value and / or the temperature of the first motor is greater than a second threshold value, the first control unit 302 is further configured to control the first power distribution unit 303 to stop distributing power and / or control the first switch unit 304 to be disconnected.

[0088] It can be understood that, the first control unit 302 jointly controls the first switch unit 304 and the first power distribution unit 303, and when the first switch unit 304 is disconnected and / or the first power distribution unit 303 stops distributing power, the power supply to the first motor can be stopped. By using the dual-path control of the first switch unit 304 and the first power distribution unit 303, the power supply to the first motor can be prevented from being out of control due to software and / or hardware failure of the first power distribution unit 303, so as to reduce the damage rate of the compressor of the air pump motor and improve reliability.

[0089] Optionally, the first threshold value and the second threshold value are not fixed values, and can be adjusted according to different application scenarios, which are not limited in the embodiments of the present application.

[0090] In a possible embodiment, when the first switch unit 304 is stuck, the first control unit 302 is further configured to control the first power distribution unit 303 to stop distributing power.

[0091] It can be understood that, when the first switch unit 304 is stuck, the power supply to the first motor can also be stopped by controlling the first power distribution unit 303 to stop distributing power. By using the dual-path control of the first switch unit 304 and the first power distribution unit 303, the power supply to the first motor can be prevented from being out of control due to the sticking of the first switch unit 304, so as to reduce the damage rate of the compressor of the air pump motor and improve reliability.

[0092] Optionally, the first switch unit 304 is stuck, which means that the fixed contact and the movable contact of the first switch unit 304 are fused or welded together, and thus cannot be normally controlled to be disconnected.

[0093] In a possible embodiment, when the first control unit 302 controls the first switch unit 304 to be disconnected and controls the first power distribution unit 303 to be powered on, and the first power distribution unit 303 collects the first loop current for powering the first motor and the first loop current is greater than 0, the first control unit 302 is further configured to determine that the first switch unit 304 is stuck.

[0094] It can be understood that the sticking problem of the first switch unit 304 can be detected by collecting the first loop current for powering the first motor by the first power distribution unit 303, so that the power supply for the first motor can be stopped in time, and the reliability of the power supply system can be ensured.

[0095] In a possible embodiment, the first end 304a of the first switch unit 304 is connected to the first control unit 302.

[0096] For details, refer to Figure 4 , Figure 4 Another structure diagram of a power supply device provided in the embodiment of the present application.

[0097] As Figure 4 shown, the first control unit 302 is further configured to collect the second loop current for powering the first motor through the connection channel between the first end 304a of the first switch unit 304 and the first control unit 302; when the first control unit 302 controls the first switch unit 304 to be disconnected and controls the first power distribution unit 303 to be powered on, and the second loop current is greater than 0, the first control unit 302 is further configured to determine that the first switch unit 304 is stuck.

[0098] It can be understood that the sticking problem of the first switch unit 304 can be detected by collecting the second loop current for powering the first motor through the connection channel between the first end 304a of the first switch unit 304 and the first control unit 302, the power supply for the first motor can be stopped in time, and the current collection failure of the first power distribution unit 303 or the network communication failure can be avoided to cause the sticking problem of the first switch unit 304 to be detected in time, so that the reliability of the power supply system can be ensured.

[0099] In a possible embodiment, the third end 304c of the first switch unit 304 is connected to the first control unit 302.

[0100] The first control unit 302 is further configured to collect the first voltage through a connection channel between the third end 304c of the first switch unit 304 and the first control unit 302; and in a case where the first control unit 302 controls the first switch unit 304 to be disconnected and the first voltage is greater than 0, the first control unit 302 is further configured to determine that the first switch unit 304 is faulty.

[0101] It can be understood that the first voltage collected through the connection channel between the third end 304c of the first switch unit 304 and the first control unit 302 can be used to detect whether the first switch unit 304 is faulty. If the first voltage is greater than 0, it indicates that the first switch unit 304 cannot be normally disconnected, so that the fault of the first switch unit 304 can be timely reported, thereby ensuring the reliability of the power supply system.

[0102] Optionally, the first voltage is a high side drive (HSD) back collection voltage, and the first control unit 302 needs to have the ability of high side drive voltage back collection to collect the first voltage.

[0103] In a possible embodiment, in a case where the communication between the first control unit 302 and the first power distribution unit 303 is abnormal for a duration greater than a third threshold, the first control unit 302 is further configured to control the first power distribution unit 303 to close power distribution and / or control the first switch unit 304 to be disconnected.

[0104] It can be understood that whether the communication between the first power distribution unit 303 and the first control unit 302 is normal can be verified, so that the first power distribution unit 303 can be controlled to close power distribution and / or the first switch unit 304 can be controlled to be disconnected in an abnormal case, thereby stopping power supply to the first motor in time and ensuring the reliability of the power supply system.

[0105] Optionally, the communication abnormality between the first control unit 302 and the first power distribution unit 303 can refer to the interruption of the communication between the first control unit 302 and the first power distribution unit 303, or can refer to the abnormal situation that the signals in the communication are lost or invalid without interruption of the communication between the first control unit 302 and the first power distribution unit 303, and the embodiments of the present application do not limit this.

[0106] Optionally, the third threshold is not a fixed value, and can be adjusted according to different application scenarios, and the embodiments of the present application do not limit this.

[0107] In a possible embodiment, in a case where the first power distribution unit 303 continuously works for a duration greater than a fourth threshold and / or the first control unit 302 is faulty, the first power distribution unit 303 closes power distribution.

[0108] It can be understood that the first power distribution unit 303 sets the control logic of the continuous working time length, so that the power distribution is closed after the first power distribution unit 303 works continuously for a certain time, and / or the first power distribution unit 303 closes the power distribution when the first control unit 302 fails, timely stops the power supply for the first motor, and guarantees the reliability of the power supply system.

[0109] Optionally, the fourth threshold value is not a fixed value, and can be adjusted according to different application scenarios, and embodiments of the present application do not limit this.

[0110] In a possible embodiment, the power supply device 30 further includes a second switch unit 305.

[0111] For details, please refer to Figure 5 , Figure 5 Another power supply device provided by the embodiments of the present application is shown in the structural schematic diagram.

[0112] The second switch unit 305 is connected in series with the first switch unit 304.

[0113] Optionally, the first end 305a of the second switch unit 305 is connected with the second end 303b of the first power distribution unit 303, the second end 305b of the second switch unit 305 is connected with the first end 304a of the first switch unit 304, the third end 305c of the second switch unit 305 is connected with the first control unit 302, and the fourth end of the second switch unit 305 is grounded.

[0114] The first control unit 302 is configured to control the second switch unit 305 to be closed.

[0115] It can be understood that the first control unit 302 controls the second switch unit 305 in the power supply device 30 to be closed, and jointly controls the first switch unit 304 in the power supply device 30 to be closed and the first power distribution unit 303 to open the power distribution, so as to realize the power supply for the first motor.

[0116] It can be understood that the first control unit 302 jointly controls the first switch unit 304, the first power distribution unit 303 and the second switch unit 305, and only when the first switch unit 304 is closed, the second switch unit 305 is closed and the first power distribution unit 303 opens the power distribution, the power supply for the first motor can be realized, and if any one condition is not met, the power supply for the first motor will be stopped. Therefore, it can be avoided that the software and / or hardware failure of the first power distribution unit 303 leads to the out-of-control power supply for the first motor, so as to reduce the damage rate of the compressor of the air pump motor and improve the reliability.

[0117] Optionally, the second switch unit 305 can be in a normally closed state, and the requirement for electrical life is relatively low.

[0118] In a possible embodiment, the first control unit 302 is configured to control the second switch unit 305 to be off in the case that the first switch unit 304 is stuck and the first power distribution unit 303 is out of control.

[0119] It can be understood that, in the case that the first switch unit 304 is stuck and the first power distribution unit 303 is out of control, the power supply for the first motor can be cut off by controlling the second switch unit 305 to be off, so as to guarantee the safety and reliability of the power supply system.

[0120] Optionally, in the power supply device, Figure 5 the first switch unit 304 can be detected by collecting the first loop current for the first motor by the first power distribution unit 303, or by collecting the second loop current for the first motor through the connection channel between the first end 304a of the first switch unit 304 and the first control unit 302, and the specific implementation can be referred to the foregoing description, which will not be repeated here.

[0121] It should be understood that the above Figures 3 to 5 are only used as several possible embodiments to exemplarily describe the power supply device provided by the present application, and should not be used to limit the present application.

[0122] It should be understood that the new embodiments obtained by reasonable deformation or supplement or combination of the above Figures 3 to 5 all belong to the protection scope of the present application.

[0123] The embodiment of the present application provides a power supply control system, which comprises a first motor and the power supply device as described in any one of the above Figures 3 to 5 The power supply device is configured to supply power for the first motor.

[0124] The embodiment of the present application provides a terminal, which comprises at least one power supply device as described in any one of the above Figures 3 to 5 or the power supply control system.

[0125] Optionally, the terminal can be a vehicle, such as a car, a truck, an aircraft, a drone, a slow transport vehicle, a space vehicle, or a ship, and the like, and the present application is not limited thereto.

[0126] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered by the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A power supply device characterized by comprising: The power supply device is applied to a first motor, and comprises: a first power supply, a first control unit, a first power distribution unit, and a first switch unit; the first end of the first power distribution unit is connected with the first power supply, and the second end of the first power distribution unit is connected with the first end of the first switch unit; the second end of the first switch unit is connected with the first motor; the first control unit is configured to control the first switch unit to be closed and control the first power distribution unit to be powered on, and the power supply device is configured to supply power to the first motor.

2. The power supply device according to claim 1, characterized by The first switch unit is closed at a time point before the first power distribution unit is powered on.

3. The power supply device according to claim 1 or 2, characterized by, In a case where the working duration of the first motor is greater than a first threshold value and / or the temperature of the first motor is greater than a second threshold value, the first control unit is further configured to control the first power distribution unit to be powered off and / or control the first switch unit to be disconnected.

4. The power supply device according to claim 1 or 2, characterized by In a case where the first switch unit is stuck, the first control unit is further configured to control the first power distribution unit to be powered off.

5. The power supply device according to claim 1 or 2, characterized by In a case where the first control unit controls the first switch unit to be disconnected and controls the first power distribution unit to be powered on, and the first power distribution unit collects a first loop current for supplying power to the first motor greater than 0, the first control unit is further configured to determine that the first switch unit is stuck.

6. The power supply device according to claim 1 or 2, wherein The first end of the first switch unit is connected with the first control unit. The first control unit is further configured to collect a second loop current for supplying power to the first motor through a connection channel between the first end of the first switch unit and the first control unit. In a case where the first control unit controls the first switch unit to be disconnected and controls the first power distribution unit to be powered on, and the second loop current is greater than 0, the first control unit is further configured to determine that the first switch unit is stuck.

7. The power supply device according to claim 1 or 2, wherein The third end of the first switch unit is connected with the first control unit. The first control unit is further configured to collect a first voltage through a connection channel between the third end of the first switch unit and the first control unit. In a case where the first control unit controls the first switch unit to be disconnected, and the first voltage is greater than 0, the first control unit is further configured to determine that the first switch unit is faulty.

8. The power supply device according to claim 1 or 2, characterized by In a case where the communication between the first control unit and the first power distribution unit is abnormal for a duration greater than a third threshold value, the first control unit is further configured to control the first power distribution unit to be powered off and / or control the first switch unit to be disconnected.

9. The power supply device according to claim 1 or 2, wherein In a case where the first power distribution unit continuously works for a duration greater than a fourth threshold value and / or the first control unit is faulty, the first power distribution unit is powered off.

10. The power supply device according to claim 1 or 2, wherein The power supply device further comprises: a second switch unit; the second switch unit is connected in series with the first switch unit; the first control unit is configured to control the second switch unit to be closed.

11. The power supply device of claim 10, wherein, In a case where the first switch unit is stuck and the first power distribution unit control is invalid, the first control unit is configured to control the second switch unit to be disconnected.

12. A power supply control system characterized by comprising: The power supply device as claimed in any one of claims 1 to 11, wherein the power supply device is configured to supply power to a first electric motor.

13. A terminal, characterized by comprising: The power supply device as claimed in any one of claims 1 to 11, or the power supply control system as claimed in claim 12.

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