CN218102956U

CN218102956U - Power supply controller, low-voltage power supply circuit and vehicle

Info

Publication number: CN218102956U
Application number: CN202221193897.0U
Authority: CN
Inventors: 田一凡
Original assignee: Beijing Rockwell Technology Co Ltd
Current assignee: Beijing Rockwell Technology Co Ltd
Priority date: 2022-05-17
Filing date: 2022-05-17
Publication date: 2022-12-20
Anticipated expiration: 2032-05-17

Abstract

The present disclosure relates to a power supply controller, low-voltage power supply circuit and vehicle, the power supply controller includes: the circuit comprises a first power supply input end and a first power supply output end, wherein a first branch circuit is arranged between the first power supply input end and the first power supply output end and comprises a high-voltage battery actuator; the first control unit is electrically connected with the high-voltage battery actuator and the at least one switch respectively, and the at least one switch is connected between the first power output end and a load power supply node; the actuator is a device for controlling the on-off of the branch, and the first control unit is a packaged integral device. Through the technical scheme, the implementation cost of the whole vehicle low-voltage power supply system is reduced, more whole vehicle spaces are saved, and the pressure of a main chip supply chain is relieved.

Description

Power supply controller, low-voltage power supply circuit and vehicle

Technical Field

The disclosure relates to the technical field of vehicles, in particular to a power supply controller, a low-voltage power supply circuit and a vehicle.

Background

With the development of the automobile industry, the intelligentization level of the automatic driving technology is higher and higher, and the power supply requirement of the automatic driving vehicle on a whole vehicle low-voltage power supply system is higher and higher. An Electronic Control Unit (ECU) in some vehicles does not even allow a low-voltage power supply network to have any fault, so that at present, a part of the entire vehicle low-voltage power supply network adopts a multi-path power supply redundancy design, that is, a multi-path power supply is arranged to supply power to a load.

In order to avoid the mutual influence among multiple Power supplies, when two Power supplies are adopted to supply Power to a load, after the Power supply of one Power supply has an undervoltage/overvoltage fault, a PNG (Power Network Management module) can be used for disconnecting a switch to ensure that the other Power supply can still normally supply Power so as to ensure the normal operation of the load function. However, the power network management module itself is an independent controller, and the power network management module also includes an independent controller corresponding to the power supply, which results in that the entire vehicle low-voltage power network at least includes a controller corresponding to the power supply, and also includes the aforementioned independent controller, i.e. the power network management unit, and the controller corresponding to the power supply and the power network management unit are both independent chips, resulting in high cost of implementing the entire vehicle low-voltage power network, large occupied entire vehicle space, and large chip supply chain pressure.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem or at least partially solve the technical problem, the present disclosure provides a power controller, a low-voltage power circuit and a vehicle, which reduce the implementation cost of a low-voltage power supply system of a whole vehicle, save more space of the whole vehicle, and relieve the pressure of a main chip supply chain.

In a first aspect, the present disclosure provides a power supply controller comprising:

the power supply comprises a first power supply input end and a first power supply output end, wherein a first branch circuit is arranged between the first power supply input end and the first power supply output end and comprises a high-voltage battery actuator;

the first control unit is electrically connected with the high-voltage battery actuator and the at least one switch respectively, and the at least one switch is connected between the first power output end and a load power supply node; the actuator is a device for controlling the on-off of the branch, and the first control unit is a packaged integral device.

Optionally, the switch includes a first switch and a second switch, the first control unit includes a control subunit, the control subunit is respectively electrically connected to the control end of the first switch and the control end of the second switch, the first end of the first switch is electrically connected to the first power output end, the second end of the first switch is electrically connected to the first end of the second switch, and the second end of the second switch is electrically connected to the load power supply node.

Optionally, the monitoring unit is electrically connected to the load power supply node and the control subunit, respectively, and the monitoring unit is connected between the first end of the second switch and the load power supply node.

Optionally, the monitoring unit is a voltage current sensor.

Optionally, the high voltage battery actuator comprises:

the voltage-current sensor and the voltage converter are connected between the first power input end and the first power output end, the first control unit comprises a control subunit electrically connected with the switch, and the control subunit is respectively electrically connected with the voltage-current sensor and the voltage converter.

Optionally, the voltage current sensor comprises a first voltage current sensor and a second voltage current sensor;

the control subunit is respectively electrically connected with the first voltage current sensor, the second voltage current sensor and the voltage converter, the voltage converter is respectively electrically connected with the first voltage current sensor and the second voltage current sensor, the first voltage current sensor is electrically connected with the first power input end, and the second voltage current sensor is electrically connected with the first power output end.

In a second aspect, the present disclosure further provides a low voltage power supply circuit, including the power supply controller according to the first aspect, further including:

the power supply controller comprises a first power supply input end, a first power supply output end, a first branch circuit, a low-voltage storage battery actuator, a load power supply node and a power supply controller.

Optionally, the low-voltage battery actuator comprises:

the second power input end comprises a second power input positive end and a second power input negative end, the third voltage and current sensor is connected between the second power input positive end and the second power input negative end, the third switch is connected between the second power input negative end and the second power output end, and the second control unit is respectively electrically connected with the third voltage and current sensor and the third switch.

Optionally, the method further comprises:

the high-voltage battery is electrically connected with the first power supply input end, and the first load power supply branch is electrically connected with the first power supply output end;

the low-voltage storage battery is electrically connected with the second power input end, and the second load power supply branch is electrically connected with the second power output end.

In a third aspect, the present disclosure also provides a vehicle including the power supply controller according to the first aspect, or the low-voltage power supply circuit according to the second aspect.

The power supply controller comprises a first power supply input end and a first power supply output end, wherein a first branch circuit is arranged between the first power supply input end and the first power supply output end and comprises a high-voltage battery actuator; the first control unit is electrically connected with the high-voltage battery actuator and the at least one switch respectively, and the at least one switch is connected between the first power output end and a load power supply node; the actuator is a device for controlling the on-off of the branch, and the first control unit is a packaged integral device. Therefore, according to the power supply system, when any one-way power supply of the high-voltage battery and the low-voltage battery goes wrong, the high-voltage battery actuator and the low-voltage battery actuator are disconnected by disconnecting at least one switch, so that mutual influence between the high-voltage battery and the low-voltage battery is avoided, namely mutual influence between multiple power supplies is avoided, real-time power supply to a vehicle cannot be ensured, the problem of normal running of the vehicle is influenced, and the power supply characteristic of a low-voltage power supply network is optimized. In addition, the first control unit forming the packaged integral device is utilized to integrate functions realized by the controller corresponding to the high-voltage battery and the two controllers of the power network management unit in the prior art into one controller of the power supply controller, namely, the functions of the two chips are integrated into one chip, so that the realization cost of a low-voltage power supply system of the whole vehicle is reduced, more space of the whole vehicle is saved, the demand on the main chip is reduced, and the pressure of a supply chain of the main chip is relieved.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present disclosure, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.

Fig. 1 is a schematic structural diagram of a low-voltage power supply circuit according to an embodiment of the disclosure;

FIG. 2 is a schematic diagram of a low voltage power supply circuit;

fig. 3 is a schematic structural diagram of another low-voltage power supply circuit according to an embodiment of the disclosure;

fig. 4 is a schematic structural diagram of another low-voltage power supply circuit provided in the embodiment of the present disclosure.

Detailed Description

In order that the above objects, features and advantages of the present disclosure may be more clearly understood, aspects of the present disclosure will be further described below. It should be noted that the embodiments and features of the embodiments of the present disclosure may be combined with each other without conflict.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present disclosure, but the present disclosure may be practiced in other ways than those described herein; it is to be understood that the embodiments disclosed in the specification are only a few embodiments of the present disclosure, and not all embodiments.

Fig. 1 is a schematic structural diagram of a low-voltage power supply circuit according to an embodiment of the present disclosure. A power supply controller comprising: the power supply comprises a first power supply input end A1 and a first power supply output end A2, wherein a first branch circuit 100 is arranged between the first power supply input end A1 and the first power supply output end A2, the first branch circuit comprises a high-voltage battery actuator 1, and the second branch circuit comprises a low-voltage battery actuator 2; a first Control Unit 31 (e.g., a Micro Controller Unit (MCU), or an Electronic Control Unit (ECU)) and at least one switch K, where the first Control Unit 31 is electrically connected to the high-voltage battery actuator 1, the low-voltage battery actuator 2, and the at least one switch K, the at least one switch K is connected between the first power output terminal A2 and a load power supply node N1, that is, the second power output terminal B2, and the second power output terminal B2 is a power output terminal of the second branch circuit 200. The high-voltage battery actuator 1 may be, for example, a DC/DC (Direct Current) power actuator.

Specifically, as shown in fig. 1, the high-voltage battery actuator 1 is electrically connected to a first load power supply branch 5, the low-voltage battery actuator 2 is electrically connected to a second load power supply branch 6, the first load power supply branch 5 and the second load power supply branch 6 form a parallel backup load power supply branch, at least one switch K is connected between the first load power supply branch 5 and the second load power supply branch 6, the first control unit 31 is electrically connected to the high-voltage battery actuator 1, the low-voltage battery actuator 2 and the at least one switch K, respectively, the first control unit 31 can be turned on by controlling the switch K to control the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to be connected, and turned off by controlling the switch K to control the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to be disconnected. Illustratively, the switch K may include, for example, a transistor or a triode, which is not particularly limited in the embodiments of the present disclosure.

Power failures may include over-voltage problems with the power supply, i.e., the power supply short-circuits the rest of the power supply, or under-voltage problems with the power supply, i.e., the power supply short-circuits to ground. For example, when the whole vehicle is operating normally, that is, the high-voltage battery 10 and the low-voltage battery 21 are operating normally, the first control unit 31 controls the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to communicate, that is, controls all the switches K to be closed, at this time, the high-voltage battery 10 may supply power to the corresponding load power supply branch line through the high-voltage battery actuator 1, the low-voltage battery 21 may supply power to the corresponding load power supply branch line through the low-voltage battery actuator 2, and the high-voltage battery 10 may charge the low-voltage battery 21 through the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 when the low-voltage battery 21 is low in charge.

When any one of the high-voltage battery 10, such as a DC/DC power supply and the low-voltage battery 21 has an overvoltage or undervoltage problem, the first control unit 31 controls the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to be disconnected, that is, controls at least one switch K to be disconnected, so as to disconnect the connection between the high-voltage battery actuator 1 and the low-voltage battery actuator 2, that is, to disconnect the electrical connection between the high-voltage battery 10 and the low-voltage battery 21, thereby avoiding the problem that the power module which does not have a fault is also short-circuited to the power supply or to the ground due to the connection with the power module which has a fault.

It should be noted that the first load power supply branch 5 may supply power to the first load 51, the third load 53 and the fourth load 54, and the second load power supply branch 6 may supply power to the second load 52, the third load 53 and the fourth load 54, for example, the first load 51 may be a Rear Motor Controller (MCUR) for controlling a Rear driving motor of the vehicle, the second load 52 may be a Front Motor Controller (MCUF) for controlling a Front driving motor of the vehicle, the first load 51 and the second load 52 are not limited to the foregoing components, and the types of the first load and the second load may be adjusted according to actual demands; the third load 53 and the fourth load 54 may be loads with higher safety level requirements in an autonomous vehicle, for example, the third load 53 may be an Electronic Power Steering (EPS) system used for Electronic Power Steering of the vehicle, and the fourth load 54 may be an Electronic Stability Program (ESP) system used for controlling dynamic Stability of the vehicle, when any one of the Power modules fails, another Power module may continuously supply Power to the third load 53 and the fourth load 54, so that redundant Power supply of the third load 53 and the fourth load 54 is realized, the safety level requirements of the third load 53 and the fourth load 54 are met, and safety of the autonomous vehicle is further improved.

Fig. 2 is a schematic structural diagram of another low-voltage power supply circuit. As shown in fig. 2, the PNG with high cost is used to implement a scheme of switching on and off each line in the low-voltage power supply protection network, the DC/DC power supply controller, the battery controller and the PNG control unit are independent and are all independent chips, at least 3 chips are required in the circuit, the cost requirement on the whole vehicle is high, and the demand on the chips is large. Specifically, when two Power supplies are used to supply Power to the load, after one of the Power supplies has an undervoltage/overvoltage fault, the PNG (Power Network Management module) will turn off the switch to ensure that the other Power supply can still supply Power normally, so as to ensure the normal operation of the controller function. However, the low-voltage power supply network of the whole vehicle usually includes three independent controllers, namely, a controller of a DC/DC (Direct Current conversion) unit, a controller of a storage battery management unit and a controller of a power supply network management unit, so that the overall cost is high, at least three chips are required, and the demand is large.

In the embodiment of the disclosure, the first control unit forming the packaged integral device, for example, an MCU or an ECU, integrates functions realized by two controllers corresponding to a high-voltage battery and a power network management unit in the prior art into one controller of a power controller, that is, integrates the functions of two chips into one chip, thereby reducing the implementation cost of a low-voltage power supply system of a whole vehicle, saving more vehicle space, reducing the demand on a main chip, and relieving the pressure of a supply chain of the main chip. In addition, the first control unit 31 controls the connection and disconnection of the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 by using the switch K, so that the problem that any one power supply module has overvoltage or undervoltage is solved, the normal work of other power supply modules cannot be influenced, and the low-voltage power supply network protection of the whole vehicle is further realized.

Optionally, as shown in fig. 1, the switch K may include a first switch K1 and a second switch K2, the first control unit 31 includes a control subunit 311, the control subunit 311 is electrically connected to a control end of the first switch K1 and a control end of the second switch K2, respectively, a first end of the first switch K1 is electrically connected to the first power output end A1, a second end of the first switch K1 is electrically connected to a first end of the second switch K2, and a second end of the second switch K2 is electrically connected to the load power supply node N1.

Specifically, as shown in fig. 1, when the control subunit 311 determines that the high-voltage battery 10 can work normally through the high-voltage battery actuator 1, the control subunit 311 controls the first switch K1, and the high-voltage battery 10 can supply power to the first load power supply branch 5 normally through the high-voltage battery actuator 1; when the control subunit 311 determines that the low-voltage battery 21 can normally operate through the low-voltage battery actuator 2, the control subunit 311 controls the second switch K2 to be turned on, and the low-voltage battery 21 can normally supply power to the second load power supply branch 6 through the low-voltage battery actuator 2.

When the control subunit 311 determines that the high-voltage battery 10 has an overvoltage or undervoltage problem through the high-voltage battery actuator 1, it controls the first switch K1 to open, and controls the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to open, that is, controls the connection line between the high-voltage battery 10 and the low-voltage battery 21 to open; when the control subunit 311 determines that the low-voltage battery 21 has an overvoltage or undervoltage problem through the low-voltage battery actuator 2, the control subunit 311 controls the second switch K2 to open, so as to control the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 to open, that is, control the connection line between the high-voltage battery 10 and the low-voltage battery 21 to open. Therefore, the problem that the power supply module without a fault is short-circuited to the power supply or the ground due to the fact that the power supply module without the fault is communicated with the fault power supply module is solved, and the working safety of the power supply controller is further improved. Illustratively, the first switch K1 and the second switch K2 may include, for example, a transistor or a triode, which is not particularly limited by the embodiments of the present disclosure.

Optionally, as shown in fig. 1, the first control unit 31 further includes a monitoring unit 23, the monitoring unit 23 is electrically connected to the load power supply node and the control subunit 311, and the monitoring unit 23 is connected between the first end of the second switch K2 and the load power supply node N1, that is, the second power output terminal B2.

Specifically, as shown in fig. 1, when the high-voltage battery 10 and the low-voltage battery 21 are operating normally, the monitoring unit 23 monitors the voltage information and the current information of the high-voltage battery 10 and the voltage information and the current information of the low-voltage battery 21; when the low-voltage storage battery 21 has the thermal runaway problem, the monitoring unit 23 is communicated with the high-voltage battery actuator 1 through the conducted first switch K1 and the conducted second switch K2 to monitor the voltage information and the current information of the high-voltage battery 10, the voltage information and the current information monitored by the monitoring unit 23 are different, the working condition that the low-voltage storage battery 21 normally works or the thermal runaway occurs is distinguished, and the accuracy of monitoring the voltage information and the current information is improved.

Alternatively, the monitoring unit 23 may be a voltage current sensor. Specifically, when the monitoring unit 23 is a voltage-current sensor, the monitoring unit is configured to monitor voltage information and current information of the high-voltage battery 10 and voltage information and current information of the low-voltage battery 21, and when the monitoring unit 23 monitors that a voltage value in the high-voltage battery 10 or the low-voltage battery 21 is higher than a normal threshold, it is determined that the high-voltage battery 10 or the low-voltage battery 21 has an overvoltage problem; when the monitoring unit 23 monitors that the voltage value in the high-voltage battery 10 or the low-voltage storage battery 21 is lower than the normal threshold value, it is determined that the high-voltage battery 10 or the low-voltage storage battery 21 has an undervoltage problem; when the monitoring unit 23 monitors that the current value in the high-voltage battery 10 or the low-voltage battery 21 is higher than the normal threshold value, it is determined that the high-voltage battery 10 or the low-voltage battery 21 has an overcurrent problem, and the power controller 4 can implement the control process of the normal operation and the power failure of the power supply described in the above embodiment through the monitoring function of the monitoring unit 23, which is not described herein again. Therefore, the monitoring unit 23 is used for monitoring the working states of the high-voltage battery 10 and the low-voltage battery 21 and finding out the fault problems of the high-voltage battery 10 and the low-voltage battery 21 in time.

Fig. 3 is a schematic structural diagram of another low-voltage power supply circuit according to an embodiment of the present disclosure. Alternatively, as shown in fig. 3, the high-voltage battery actuator 1 includes: the voltage-current sensor 11 and the voltage conversion unit 14, the voltage-current sensor 11 and the voltage conversion unit 14 are connected between the first power input terminal A1 and the first power output terminal A2, the first control unit 31 includes a control subunit 311 electrically connected to the switch K, and the control subunit 311 is electrically connected to the voltage conversion unit 14 and the voltage-current sensor 11, respectively.

Specifically, as shown in fig. 3, the voltage and current sensor 11 transmits the monitored voltage information and current information of the high-voltage battery 10 to the control subunit 311, and the control subunit 311 determines the operating state of the high-voltage battery 10 according to the voltage information and the current information, and then controls whether the high-voltage battery 10 supplies power to the first load power supply branch 5. Illustratively, when the control subunit 311 determines that the high-voltage battery 10 is operating normally according to the voltage information and the current information, the control subunit controls the high-voltage battery 10 to normally convert the direct-current high voltage into the direct-current low voltage and supplies power to the first load power supply branch 5; when the control subunit 311 determines that the overvoltage, undervoltage or overcurrent problem exists in the high-voltage battery 10 according to the voltage information and the current information, the control subunit controls the high-voltage battery 10 not to convert the dc high voltage into the dc low voltage, and not to supply power to the first load power supply branch 5, and at the same time, controls the switch K to be switched off to disconnect the electrical connection between the two power supplies.

Alternatively, as shown in fig. 3, the voltage current sensor 11 includes a first voltage current sensor 12 and a second voltage current sensor 13; the control subunit 311 is electrically connected to the first voltage/current sensor 12, the second voltage/current sensor 13, and the voltage converter 14, the voltage converter 14 is electrically connected to the first voltage/current sensor 12 and the second voltage/current sensor 13, the first voltage/current sensor 12 is electrically connected to the first power input terminal A1, and the second voltage/current sensor 13 is electrically connected to the first power output terminal A2.

Specifically, as shown in fig. 3, the first voltage/current sensor 12 may monitor high-voltage information and current information of the high-voltage battery 10, the second voltage/current sensor 13 may monitor low-voltage information and current information of the high-voltage battery 10, and the control subunit 311 determines the working state of the high-voltage battery 10 according to the high-voltage information, the low-voltage information and the current information, and then controls whether the high-voltage battery 10 supplies power to the first load power supply branch 5, so as to control the on-off state of the first switch K1. Illustratively, when the control subunit 311 determines that there is an overvoltage problem in the high-voltage battery 10 according to the high-voltage information monitored by the first voltage/current sensor 12, the control voltage converter 14 no longer converts the dc high voltage into the dc low voltage, and the high-voltage battery 10 thus no longer supplies power to the first load power supply branch 5; when the control subunit 311 determines that the high-voltage battery 10 has an undervoltage problem according to the low-voltage information monitored by the second voltage/current sensor 13, the control voltage converter 14 does not convert the dc high voltage into the dc low voltage any more, so that the first load power supply branch 5 is not powered any more; when the control subunit 311 determines that the high-voltage battery 10 has an overcurrent problem according to the current information monitored by the first voltage/current sensor 12, the control voltage converter 14 does not convert the dc high voltage into the dc low voltage any more, so that the first load power supply branch 5 is not powered any more; when the control subunit 311 determines that the high-voltage battery 10 works normally according to the high-voltage information, the low-voltage information, and the current information, the control voltage converter 14 normally converts the dc high voltage into the dc low voltage, and the high-voltage battery 10 normally supplies power to the first load power supply branch 5. Therefore, the first voltage and current sensor 12 and the second voltage and current sensor 13 respectively monitor the high-voltage information and the low-voltage information, so that the accuracy of the control subunit 311 in detecting the voltage information is improved, and the working safety of the power supply controller is further improved.

In addition, the first control unit 31 is electrically connected to the first voltage current sensor 12, the second voltage current sensor 13 and the voltage converter 14, respectively, and the first control unit 31 can also control the on/off state of the switch in the switch bridge circuit in the voltage converter 14 to control the voltage converter 14 to realize the voltage conversion function.

The embodiment of the present disclosure further provides a low-voltage power supply circuit, and with reference to fig. 1 and fig. 3, on the basis of the above embodiment, the low-voltage power supply circuit includes the power supply controller according to the above embodiment, and further includes a second power input end B1 and a second power output end B2, the second branch 200 is included between the second power input end B1 and the second power output end B2, the second branch 200 includes the low-voltage battery actuator 2, and the power supply controller is electrically connected to the second branch 200 at the load power supply node N1.

Fig. 4 is a schematic structural diagram of another low-voltage power supply circuit provided in the embodiment of the present disclosure. Optionally, as shown in fig. 4, the low-voltage battery actuator 2 further includes: a third voltage-current sensor 22, a second control unit 32 and a third switch K3, the second power input terminal B1 comprises a second power input positive terminal + and a second power input negative terminal-, the third voltage-current sensor 22 is connected between the second power input positive terminal + and the second power input negative terminal-, the third switch K3 is connected between the second power input negative terminal-and the second power output terminal B2, the second control unit 32 is electrically connected with the third voltage-current sensor 22 and the third switch K3, respectively.

Specifically, as shown in fig. 4, the third voltage/current sensor 22 may monitor voltage information and current information of the low-voltage battery 21, and the second control unit 32 determines the operating state of the low-voltage battery 21 according to the voltage information and the current information of the low-voltage battery 21, so as to control whether the low-voltage battery 21 supplies power to the second load power supply branch 6. Illustratively, when the second control unit 32 judges that the low-voltage storage battery 21 has the problems of overvoltage, undervoltage, overcurrent or thermal runaway according to the voltage information and the current information monitored by the third voltage-current sensor 22, the second control unit 32 controls the third switch K3 to be switched off, and the low-voltage storage battery 21 does not supply power to the second load power supply branch 6 any more; when the second control unit 32 determines that the low-voltage battery 21 works normally according to the voltage information and the current information, the second control unit 32 controls the third switch K3 to be turned on, and the low-voltage battery 21 supplies power to the second load power supply branch 6 normally.

Optionally, as shown in fig. 4, the low-voltage battery actuator 2 further includes: the temperature sensor, temperature sensor correspond low-voltage battery 21 and set up, and temperature sensor not shown in the figure can set up temperature sensor and close to low-voltage battery 21 and set up, ensure that temperature sensor can accurate detection low-voltage battery 21 the temperature information can, second the control unit 32 is connected with temperature sensor electricity.

Specifically, as shown in fig. 4, a temperature sensor may monitor temperature information of the low-voltage battery 21, and the second control unit 32 determines the operating state of the low-voltage battery 21 according to the temperature information monitored by the temperature sensor, and then controls whether the low-voltage battery 21 supplies power to the second branch 6. Illustratively, when the second control unit 32 judges that the low-voltage storage battery 21 has an over-temperature problem according to the temperature information monitored by the temperature sensor, the low-voltage storage battery 21 is controlled not to supply power to the second branch circuit 6 any more, so that the low-voltage storage battery 21 is prevented from thermal runaway and the second branch circuit 6 is prevented from being burnt; and when the second control unit 32 judges that the low-voltage storage battery 21 works normally according to the temperature information monitored by the temperature sensor, the low-voltage storage battery actuator 2 is controlled to supply power to the second branch circuit 6 normally.

Optionally, in combination with fig. 1, fig. 2 and fig. 4, the low voltage power supply circuit further includes: the high-voltage battery 10 is electrically connected with the first power supply input end A1, and the first load power supply branch 5 is electrically connected with the first power supply output end A2; the low-voltage storage battery 21 is electrically connected with the second power input end B1, and the second load power supply branch 6 is electrically connected with the second power output end B2. Alternatively, the output voltage of the high-voltage battery 10 is higher than the output voltage of the low-voltage battery 21.

In particular, the high-voltage battery 10 may comprise a DC/DC power supply, i.e. a DC to DC power supply, i.e. the DC/DC power supply may convert a DC high voltage into a DC low voltage via the voltage converter 14 and supply the first load supply branch 5, and the low-voltage battery 21 may supply the second load supply branch 6 via the low-voltage battery actuator 2. For example, the output voltage of the high-voltage battery 10 may be set higher than the output voltage of the low-voltage battery 21, which may be 12V, for example. In the embodiment of the present disclosure, the magnitudes of the output voltage of the high-voltage battery 10 and the output voltage of the low-voltage battery 21 are not particularly limited.

Therefore, according to the embodiment of the disclosure, the high-voltage battery actuator 1, the first control unit 31 and the at least one switch K are arranged in the power supply controller 4, three controllers, namely, a controller corresponding to a DC/DC power supply, a controller corresponding to a storage battery and a power supply network management unit in the prior art are integrated into one controller of the power supply controller 4, that is, two chips are integrated into one chip, so that the implementation cost of a low-voltage power supply system of a whole vehicle is reduced, more vehicle spaces are saved, the demand of a main chip is reduced, and the pressure of a supply chain of the main chip is relieved. In addition, the first control unit 31 controls the connection and disconnection of the connection line between the high-voltage battery actuator 1 and the low-voltage battery actuator 2 by using the switch K, so that the problem that any one power supply module has overvoltage or undervoltage is solved, the normal work of other power supply modules cannot be influenced, and the low-voltage power supply network protection of the whole vehicle is further realized.

The embodiment of the disclosure also provides a vehicle, which includes the power controller according to the above embodiment or the power controller according to the above embodiment, so that the vehicle provided by the embodiment of the disclosure has the beneficial effects described in the above embodiment. In addition, the vehicle according to the embodiment of the present disclosure may be a fuel-powered vehicle, a pure electric vehicle, or a hybrid electric vehicle, and the embodiment of the present disclosure is not particularly limited thereto.

It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, 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 phrases "comprising one of 8230; \8230;" 8230; "does not exclude the presence of additional like elements in a process, method, article, or apparatus that comprises the element.

The foregoing are merely exemplary embodiments of the present disclosure, which enable those skilled in the art to understand or practice the present disclosure. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the disclosure. Thus, the present disclosure is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A power supply controller, comprising:

the circuit comprises a first power supply input end and a first power supply output end, wherein a first branch circuit is arranged between the first power supply input end and the first power supply output end and comprises a high-voltage battery actuator;

2. The power supply controller of claim 1, wherein the switch comprises a first switch and a second switch, the first control unit comprises a control subunit, the control subunit is electrically connected to a control terminal of the first switch and a control terminal of the second switch, respectively, a first terminal of the first switch is electrically connected to the first power output terminal, a second terminal of the first switch is electrically connected to a first terminal of the second switch, and a second terminal of the second switch is electrically connected to the load power supply node.

3. The power supply controller of claim 2, wherein the first control unit further comprises a monitoring unit, the monitoring unit is electrically connected to the load power supply node and the control subunit, respectively, and the monitoring unit is connected between the first end of the second switch and the load power supply node.

4. A power supply controller according to claim 3, wherein the monitoring unit is a voltage current sensor.

5. The power supply controller of claim 1, wherein the high voltage battery actuator comprises:

6. The power supply controller of claim 5, wherein the voltage current sensor comprises a first voltage current sensor and a second voltage current sensor;

7. A low voltage power supply circuit including a power supply controller as claimed in any one of claims 1 to 6, and further including:

the power supply comprises a first power supply input end, a first power supply output end, a first branch circuit, a low-voltage storage battery actuator and a power supply controller, wherein the first branch circuit is arranged between the first power supply input end and the first power supply output end, the first branch circuit comprises the low-voltage storage battery actuator, and the power supply controller is electrically connected with the first branch circuit at a load power supply node.

8. The low voltage power supply circuit of claim 7, wherein said low voltage battery actuator comprises:

9. The low voltage power supply circuit according to claim 7, further comprising:

the low-voltage storage battery is electrically connected with the second power supply input end, and the second load power supply branch is electrically connected with the second power supply output end.

10. A vehicle comprising a power supply controller as claimed in any one of claims 1 to 6 or a low voltage power supply circuit as claimed in any one of claims 7 to 9.