CN217063371U - Redundant low-voltage power supply circuit and vehicle - Google Patents
Redundant low-voltage power supply circuit and vehicle Download PDFInfo
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- CN217063371U CN217063371U CN202123196612.7U CN202123196612U CN217063371U CN 217063371 U CN217063371 U CN 217063371U CN 202123196612 U CN202123196612 U CN 202123196612U CN 217063371 U CN217063371 U CN 217063371U
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Abstract
The utility model relates to a redundant low pressure power supply circuit and vehicle, redundant low pressure power supply circuit includes: the first power supply and the second power supply are connected in parallel and are electrically connected with the first load branch circuit; the third power supply is electrically connected with the second load branch, the switch component is electrically connected with the first load branch and the second load branch respectively, and the switch component is used for controlling the connection and disconnection between a power supply connection node of the first load branch and a power supply connection node of the second load branch; wherein the output voltages of the first power supply and the third power supply are higher than the output voltage of the second power supply. Through the technical scheme disclosed by the invention, the power supply safety and robustness of the redundant low-voltage power supply circuit are improved, and the implementation cost of continuously supplying power to the load by the redundant low-voltage power supply circuit is reduced.
Description
Technical Field
The disclosure relates to the technical field of vehicles, in particular to a redundant 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. The high-level automatic driving system is already mounted in an automatic driving vehicle, and the high-level automatic driving system requires that a low-voltage power supply system of the vehicle can still maintain low-voltage power supply for a period of time when a power supply or a load fails, so that the automatic driving system can control the vehicle to run to a safe parking area, such as an emergency lane, a safe island or a service area.
At present, each load in a vehicle power supply circuit can be directly and electrically connected with a plurality of power supplies, the plurality of power supplies are mutually redundant and backup, and the vehicle power supply circuit can realize continuous power supply to the load, but the realization cost is high. Or a vehicle power supply circuit comprising two power supplies and a power supply protection module arranged between the two power supplies can be arranged, the vehicle power supply circuit is low in implementation cost, when one power supply is short-circuited, the power supply protection module disconnects a fault power supply from a loop, the power supply time of the residual battery can only be maintained for a short time, continuous power supply to a load cannot be achieved, and the fact that the automatic driving vehicle cannot run to a safety zone cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the present disclosure provides a redundant low-voltage power supply circuit and a vehicle, which improve the power supply safety and robustness of the redundant low-voltage power supply circuit and reduce the implementation cost of the redundant low-voltage power supply circuit for continuously supplying power to a load.
In a first aspect, the present disclosure provides a redundant low voltage power supply circuit comprising:
the power supply comprises a first power supply and a second power supply, wherein the first power supply and the second power supply are connected in parallel, and are electrically connected with a first load branch circuit;
the third power supply is electrically connected with a second load branch, the switch component is electrically connected with the first load branch and the second load branch respectively, and the switch component is used for controlling the connection and disconnection between a power supply connection node of the first electric load branch and a power supply connection node of the second load branch; wherein output voltages of the first power supply and the third power supply are higher than an output voltage of the second power supply.
Optionally, the first power source and the third power source comprise a dc converter, and the second power source comprises a battery.
Optionally, the positive terminal of the first power supply and the positive terminal of the second power supply are electrically connected to the first load branch, and the negative terminals of the first power supply and the second power supply are grounded;
the first communication end of the switch component is electrically connected with the power supply connection node of the first load branch, the second communication end of the switch component is electrically connected with the power supply connection node of the second load branch and the positive electrode end of the third power supply, and the negative electrode end of the third power supply is grounded.
Optionally, the first connection terminal of the switch component is located between the positive terminal of the second power supply and the power supply connection node of the first load branch; alternatively, the first and second liquid crystal display panels may be,
the first connection terminal of the switch member is located between the positive terminal of the first power supply and the positive terminal of the second power supply.
Optionally, the first load branch comprises at least one first load, and a first end of the first load in the first load branch is electrically connected with a positive terminal of the first power supply;
the second load branch comprises at least one first load, a first end of the first load in the second load branch is electrically connected with a positive terminal of the third power supply, and a second end of the first load is grounded.
Optionally, the positive terminal of the first power source and the positive terminal of the third power source are both electrically connected to a first terminal of at least one second load, and a second terminal of the second load is grounded.
Optionally, the first load comprises at least one of a vehicle door or a vehicle window, and the second load comprises at least one of a vehicle control unit, a steering control unit, or a brake control unit.
Optionally, the switching component comprises a metal oxide semiconductor field effect transistor.
Optionally, the redundant low voltage supply circuit further comprises:
the power monitoring end of the power monitoring part is respectively electrically connected with the first power supply and the third power supply, and the switch control end of the power monitoring part is electrically connected with the control end of the switch part.
In a second aspect, the present disclosure also provides a vehicle comprising a redundant low voltage power supply circuit as described in the first aspect.
Compared with the prior art, the technical scheme provided by the embodiment of the disclosure has the following advantages:
the redundant low-voltage power supply circuit comprises a first power supply, a second power supply and a third power supply, wherein the first power supply and the second power supply are connected in parallel, the first power supply and the second power supply are both electrically connected with a first load branch, the third power supply is electrically connected with a second load branch, a switch component is respectively electrically connected with the first load branch and the second load branch, and the switch component is used for controlling the on-off between a power supply connection node of the first load branch and a power supply connection node of the second load branch, wherein the output voltages of the first power supply and the third power supply are higher than the output voltage of the second power supply. Therefore, the first power supply and the third power supply are mutually redundant and backup through the switch component, the first power supply and the second power supply are mutually redundant and backup, any one power supply fails, and the rest power supplies which do not fail can supply power to the corresponding load, and even if the first power supply or the third power supply fails, the rest power supplies which do not fail can still realize continuous power supply to the corresponding load, so that the power supply safety and robustness of the redundant low-voltage power supply circuit are improved.
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 redundant low-voltage power supply circuit according to an embodiment of the present disclosure;
FIG. 2 is a schematic diagram of another low voltage power supply circuit;
FIG. 3 is a schematic diagram of another low-voltage power supply circuit;
fig. 4 is a schematic structural diagram of another redundant low-voltage power supply circuit provided in the embodiment of the present disclosure;
fig. 5 is a schematic structural diagram of another redundant low-voltage power supply circuit according to an 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 otherwise than as 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 redundant low-voltage power supply circuit according to an embodiment of the present disclosure. As shown in fig. 1, the redundant low-voltage power supply circuit includes a first power supply 1, a second power supply 2, a third power supply 3 and a switch component K1, wherein the first power supply 1 is connected in parallel with the second power supply 2, and both the first power supply 1 and the second power supply 2 are electrically connected with a first load branch 5; the third power supply 3 is electrically connected with the second load branch 6, the switch component K1 is electrically connected with the first load branch 5 and the second load branch 6 respectively, and the switch component K1 is used for controlling the on-off between the power supply connection node a1 of the first load branch 5 and the power supply connection node a2 of the second load branch 6; wherein the output voltages of the first power supply 1 and the third power supply 3 are higher than the output voltage of the second power supply 2.
Specifically, when the first power supply 1, the second power supply 2, and the third power supply 3 all operate normally, the switch part K1 may be controlled to be turned off to disconnect the connection between the first power supply 1 and the third power supply 3, the first power supply 1 may normally supply power to the first load branch 5, the third power supply 3 may normally supply power to the second load branch 6, the output voltage of the first power supply 1 is set to be higher than the output voltage of the second power supply 2, and the first power supply 1 is connected in parallel with the second power supply 2, and the first power supply 1 may charge the second power supply 2 through the parallel relationship between the first power supply 1 and the second power supply 2 when the electric quantity of the second power supply 2 is low.
When the first power supply 1 stops working or there is an open-circuit fault, the switch component K1 can be controlled to be closed to connect the first load branch 5 and the third power supply 3, and the third power supply 3 can supply power to the first load branch 5 at the same time of supplying power to the second load branch 6; when the third power source 3 stops operating or there is an open-circuit fault, the first power source 1 can supply power to the second load branch 6 at the same time as the first load branch 5 by controlling the switching component K1 to be closed to connect the first power source 1 and the second load branch 6.
When the first power supply 1 has a short-circuit fault, the control switch component K1 is disconnected to disconnect the connection relationship between the third power supply 3 and the first power supply 1, so as to avoid the problem that the third power supply 3 is also short-circuited due to the communication between the third power supply 3 and the first power supply 1, at this time, the second power supply 2 can supply power to the first load branch 5, and the third power supply 3 can supply power to the second load branch 6. It should be noted that the magnitude of the output voltage of the first power supply 1 and the third power supply 3 and the magnitude of the output voltage of the second power supply 2 are not particularly limited in the embodiments of the present disclosure.
Alternatively, as shown in fig. 1, the first power supply 1 and the third power supply 3 may be provided to include dc converters, and the second power supply 2 may include a secondary battery.
Specifically, the first power source 1 and the third power source 3 may include a Direct Current converter (DC/DC), that is, the first power source 1 and the third power source 3 may convert a high DC voltage into a low DC voltage and supply power to a first load branch 5 and a second load branch 6 in a vehicle, for example, an autonomous vehicle, respectively, the second power source 2 may be a storage battery, and the voltage of the second power source 2 may be 12V, for example. When the first power supply 1 works normally, the first power supply 1 charges the second power supply 2 through a connecting line between the first power supply 1 and the second power supply 2 when the electric quantity of the second power supply 2 is low; when the first power supply 1 has a corresponding fault and closes the switch part K1, the third power supply 3 can also charge the second power supply 2 via the connection line between the second power supply 2 and the third power supply 3 when the second power supply 2 has a low capacity.
Along with the development of the automobile industry, the intelligent level of the automatic driving vehicle is higher and higher, and the power supply requirement of the automatic driving vehicle on a whole vehicle low-voltage power supply system is also higher and higher. Currently, a high-level automatic driving system is already mounted in an automatic driving vehicle, and the high-level automatic driving system requires that a low-voltage power supply system in the automatic driving vehicle can still maintain low-voltage power supply for a period of time when a power supply or a load in the automatic driving vehicle fails, so that the automatic driving system can control the automatic driving vehicle to run to a safe parking area, such as an emergency lane, a safe island or a service area.
Fig. 2 is a schematic structural diagram of another low-voltage power supply circuit. As shown in fig. 2, a low-voltage power supply circuit may be provided, which includes two DC converters DC/DC1 and DC/DC2, and also includes two low-voltage batteries, and although the low-voltage power supply circuit can realize continuous power supply to the load, the low-voltage power supply circuit is relatively expensive to realize. Fig. 3 is a schematic structural diagram of another low-voltage power supply circuit. As shown in fig. 3, the low-voltage power supply circuit may include a DC/DC converter 1, a low-voltage battery, and a power protection module, and although the implementation cost of the circuit is lower than that of the structure shown in fig. 2, when a short circuit occurs in a loop of the DC converter, the power protection module disconnects the DC converter from the low-voltage loop, the low-voltage system may only supply power by the low-voltage battery, the power supply time may only be maintained for 10-30 minutes, and continuous power supply to the load may not be implemented, so that it may not be ensured that the vehicle is automatically driven to a safe area.
The first power supply 1 and the second power supply 2 are arranged in parallel, the first power supply 1 and the second power supply 2 are both electrically connected with the first load branch 5, the third power supply 3 is electrically connected with the second load branch 6, the switch component K1 is respectively electrically connected with the first load branch 5 and the second load branch 6, the switch component K1 is used for controlling the on-off between the power supply connection node a1 of the first load branch 5 and the power supply connection node a2 of the second load branch 6, wherein the output voltages of the first power supply 1 and the third power supply 3 are higher than the output voltage of the second power supply 2. Therefore, the first power supply 1 and the third power supply 3 are redundant backup of each other through the switch component K1, the first power supply 1 and the second power supply 2 are redundant backup of each other, any one path of power supply fails, and other power supplies which do not fail can supply power to corresponding loads, and even if the first power supply 1 or the third power supply 3 fails, the other power supplies which do not fail can still realize continuous power supply to the corresponding loads, so that the power supply safety and robustness of the redundant low-voltage power supply circuit are improved, and the cost of realizing continuous power supply to the loads by the redundant low-voltage power supply circuit is reduced by the switch component K1.
Alternatively, as shown in fig. 1, the positive terminal a of the first power supply 1 and the positive terminal C of the second power supply 2 may be both electrically connected to the first load branch 5, and the negative terminal B of the first power supply 1 and the negative terminal D of the second power supply 2 may be grounded; the first connection B1 of the switch component K1 is electrically connected to the power supply connection node a1 of the first load branch 5, the second connection B2 of the switch component K1 is electrically connected to the power supply connection node a2 of the second load branch 6 and the positive terminal E of the third power supply 3, and the negative terminal of the third power supply 3 is grounded.
Specifically, as shown in fig. 1, the positive terminal a of the first power source 1 and the positive terminal C of the second power source 2 may be electrically connected to the first load branch 5, the negative terminal B of the first power source 1 and the negative terminal D of the second power source 2 may be grounded, and the first power source 1 and the second power source 2 may be connected in parallel. Illustratively, when the first power supply 1 is working normally, the first power supply 1 supplies power to the first load branch 5, and the first power supply 1 can charge the second power supply 2 through a connection line between the first power supply 1 and the second power supply 2 when the second power supply 2 is low in power; when the first power supply 1 is short-circuited, the second power supply 2 can supply power to the first load branch 5 for a short time.
The first connection terminal B1 of the switch unit K1 is electrically connected to the power supply connection node a1 of the first load branch 5, the second connection terminal B2 of the switch unit K1 is electrically connected to the positive terminal E of the third power supply 3, and the first power supply 1 and the third power supply 3 are connected through the switch unit K1. Illustratively, when the first power supply 1 and the third power supply 3 are operating normally, the switching component K1 remains open, the first power supply 1 supplies power to the first load branch 5, and the third power supply 3 supplies power to the second load branch 6; when the first power supply 1 stops working or is disconnected, the switch component K1 is closed to connect the first load branch 5 and the third power supply 3, and the third power supply 3 can supply power to the first load branch 5 at the same time of supplying power to the second load branch 6; when the third power source 3 stops operating or is disconnected, the switch component K1 is closed to connect the first power source 1 and the second load branch 6, and the first power source 1 can supply power to the second load branch 6 at the same time as the first load branch 5.
When the first power supply 1 has a short-circuit fault, the control switch component K1 is disconnected to disconnect the connection relationship between the third power supply 3 and the first power supply 1, so as to avoid the problem that the third power supply 3 is also short-circuited due to the communication between the third power supply 3 and the first power supply 1, at this time, the second power supply 2 can supply power to the first load branch 5, and the third power supply 3 can supply power to the second load branch 6.
Optionally, as shown in fig. 1, the first connection terminal B1 of the switch component K1 is located between the positive terminal C of the second power supply 2 and the power connection node a1 of the first load branch 5, and the redundant low-voltage power supply circuit with the structure shown in fig. 1 may implement the control process of the normal operation and the power failure of the power supply described in the foregoing embodiment, which is not described herein again.
Fig. 4 is a schematic structural diagram of another redundant low-voltage power supply circuit provided in the embodiment of the present disclosure, and is different from the redundant low-voltage power supply circuit with the structure shown in fig. 1 in that a first connection terminal B1 of a switch component K1 of the redundant low-voltage power supply circuit with the structure shown in fig. 4 is located between a positive terminal a of a first power supply 1 and a positive terminal C of a second power supply 2, and the redundant low-voltage power supply circuit with the structure shown in fig. 4 can also implement the control processes of normal operation and power failure of the power supply described in the foregoing embodiment, and is not described again here.
Alternatively, in conjunction with fig. 1 and 4, it may be provided that the first load branch 5 comprises at least one first load 11, and the first end F of the first load 11 in the first load branch 5 is electrically connected to the positive terminal a of the first power source 1; the second load branch 6 comprises at least one first load 11, a first terminal F of the first load 11 in the second load branch is electrically connected to the positive terminal E of the third power source 3, and a second terminal G of the first load 11 is grounded.
Specifically, fig. 1 and 4 exemplarily show that two first loads 11 are disposed on the first load branch 5, two first loads 11 are disposed on the second load branch 6, a first end F of the first load 11 on the first load branch 5 is electrically connected to the positive terminal a of the first power supply 1, a first end F of the first load 11 on the second load branch 6 is electrically connected to the positive terminal E of the third power supply 3, and a second end G of the first load 11 is grounded. When the first power supply 1 and the third power supply 3 are operating normally, the first power supply 1 supplies power to the first load 11 on the first load branch 5, and the third power supply 3 supplies power to the first load 11 on the second load branch 6. It should be noted that the number of the first loads 11 disposed on the first load branch 5 and the second load branch 6 may be determined according to actual requirements of the autonomous vehicle, and the embodiment of the disclosure is not limited thereto.
Optionally, the positive terminal a of the first power source 1 and the positive terminal E of the third power source 3 are both electrically connected to the first terminal H of the at least one second load 12, and the second terminal I of the second load 12 is grounded.
Specifically, fig. 1 and 4 exemplarily show that the positive terminal a of the first power source 1 and the positive terminal E of the third power source 3 are both electrically connected to the first terminal H of one second load 12, and the second terminal I of the second load 12 is grounded. Illustratively, when the first power supply 1 and the third power supply 3 both operate normally, both the first power supply 1 and the third power supply 3 may supply power to the second load 12 normally; when the first power source 1 fails, the third power source 3 can still supply power to the second load 12, and likewise, when the third power source 3 fails, the first power source 1 can still supply power to the second load 12. Therefore, the first power supply 1 and the third power supply 3 can be used as redundant backup power supplies for the second load 12, when any one power supply fails, the other power supply can continuously supply power to the second load 12, the problem that the second load 12 cannot continuously run when the power supply fails is avoided, and the safety of a redundant low-voltage power supply circuit is improved. It should be noted that the number of the second loads 12 may be determined according to the actual demand of the autonomous vehicle, which is not limited in the embodiment of the disclosure.
Alternatively, it may be provided that the first load 11 includes at least one of a vehicle door or a vehicle window, and the second load 12 includes at least one of a vehicle controller, a steering controller, or a brake controller.
Specifically, the first load 11 may be at least one of a vehicle door and a vehicle window, for example, the first load 11 in the first load branch 5 may be a left front vehicle door and a right rear vehicle door, the first load 11 in the second load branch 6 may be a left rear vehicle door and a right front vehicle door, the first load 11 in the first load branch 5 may be a left front vehicle window and a right rear vehicle window, the first load 11 in the second load branch 6 may be a left rear vehicle window and a right front vehicle window, the first load 11 is not limited to the foregoing components, and the type of the first load 11 may be adjusted according to actual requirements.
In addition, the second load 12 may be a vehicle controller for controlling the operation of the autonomous vehicle, or a steering controller for controlling the steering wheel of the autonomous vehicle, or a brake controller for controlling the braking and deceleration of the autonomous vehicle, and the second load 12 is not limited to the above components, and the type of the second load 12 in the autonomous vehicle may be adjusted according to actual requirements. Therefore, the vehicle control unit, the steering controller or the brake controller is a load with higher safety level requirement in the automatic driving vehicle, when any power supply fails, the other power supply can continuously supply power to the second load 12, redundant power supply of the second load 12 is realized, the safety level requirement of the second load 12 is met, and the safety of the automatic driving vehicle is further improved.
Alternatively, the switching part K1 may be configured to include a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET), which is a Field-Effect Transistor widely used in analog circuits and digital circuits, and may be classified into an N-type MOSFET and a P-type MOSFET according to the polarity of the channel. Because the manufacturing process of the metal oxide semiconductor field effect transistor is mature, the metal oxide semiconductor field effect transistor is used as the switch component K1, and the cost of the redundant low-voltage power supply circuit can be reduced. In addition, a gate of a metal oxide semiconductor field effect transistor may be provided as a control terminal of the switching part K1 to control on and off of the switching part K1, and a source and a drain of the metal oxide semiconductor field effect transistor may be respectively provided as the first and second connection terminals B1 and B2 of the switching part K1.
Fig. 5 is a schematic structural diagram of another redundant low-voltage power supply circuit according to an embodiment of the present disclosure. On the basis of the above embodiment, as shown in fig. 5, the redundant low-voltage power supply circuit may further include a power supply monitoring unit 4, a power supply monitoring terminal D1 of the power supply monitoring unit 4 is electrically connected to the first power supply 1 and the third power supply 3, respectively, and a switch control terminal of the power supply monitoring unit 4 is electrically connected to a control terminal of the switch unit K1.
Specifically, the power supply monitoring component 4 may obtain output voltage information or output current information sent by the first power supply 1 and the third power supply 3, and the power supply monitoring component 4 determines whether the first power supply 1 and the third power supply 3 have a problem of stopping working, breaking or short-circuiting according to the output voltage information or the output current information of the first power supply 1 and the third power supply 3. When the power supply monitoring part 4 monitors that the first power supply 1 and the third power supply 3 operate normally, the power supply monitoring part 4 controls the connection line between the first power supply 1 and the third power supply 3 to be disconnected, that is, the power supply monitoring part 4 controls the switch part K1 to be disconnected. At this time, the first power supply 1 supplies power to the first load branch 5, the third power supply 3 supplies power to the second load branch 6, and the first power supply 1 can charge the second power supply 2 through a parallel connection line between the first power supply 1 and the second power supply 2 when the second power supply 2 has low electric quantity.
When the power monitoring component 4 monitors that the first power supply 1 stops working or breaks down, the power monitoring component 4 controls a connection line between the first power supply 1 and the third power supply 3 to be communicated, that is, the power monitoring component 4 controls the switch component K1 to be closed, and at this time, the third power supply 3 supplies power to the first load branch 5 and the second load branch 6 at the same time; when the power monitoring component 4 monitors that the third power supply 3 has a shutdown or open circuit fault, the power monitoring component 4 controls the connection line between the first power supply 1 and the third power supply 3 to be connected, that is, the power monitoring component 4 controls the switch component K1 to be closed, and at this time, the first power supply 1 simultaneously supplies power to the first load branch 5 and the second load branch 6.
When the power monitoring component 4 monitors that the first power supply 1 has a short-circuit fault, the power monitoring component 4 controls the connection line between the first power supply 1 and the third power supply 3 to be disconnected, that is, the power monitoring component 4 controls the switch component K1 to be disconnected, so that the problem that the third power supply 3 which does not have a fault is also short-circuited due to the connection with the first power supply 1 which has a fault is avoided, the first power supply 1 stops supplying power to the connected first load branch 5, and the first power supply 1 which has a fault continues to supply power to the first load branch 5, which affects the performance or the service life of the first load 11 and the second load 12 on the first load branch 5; when the power monitoring component 4 monitors that the third power supply 3 has a short-circuit fault, the power monitoring component 4 controls the connection line between the first power supply 1 and the third power supply 3 to be disconnected, that is, the power monitoring component 4 controls the switch component K1 to be disconnected, so that the problem that the first power supply 1 which does not have a fault is also short-circuited due to the connection with the third power supply 3 which has a fault is avoided, and the third power supply 3 stops supplying power to the connected second load branch 6, so that the first power supply 1 which has a fault continues to supply power to the second load branch 6, and the performance or the service life of the first load 11 and the second load 12 on the second load branch 6 is influenced.
The embodiment of the disclosure also provides a vehicle, which includes the redundant low-voltage power supply circuit according to the embodiment, so that the vehicle provided by the embodiment of the disclosure has the beneficial effects described in the embodiment. In addition, the vehicle according to the embodiment of the present disclosure may be an automatic driving vehicle, 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 phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description is only for the purpose of describing particular embodiments of the present disclosure, so as to enable those skilled in the art to understand or implement 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 (10)
1. A redundant low voltage power supply circuit, comprising:
the power supply comprises a first power supply and a second power supply, wherein the first power supply and the second power supply are connected in parallel, and are electrically connected with a first load branch circuit;
the third power supply is electrically connected with a second load branch, the switch component is electrically connected with the first load branch and the second load branch respectively, and the switch component is used for controlling the connection and disconnection between a power supply connection node of the first load branch and a power supply connection node of the second load branch; wherein output voltages of the first power supply and the third power supply are higher than an output voltage of the second power supply.
2. The redundant low voltage power supply circuit of claim 1 wherein said first power source and said third power source comprise dc converters and said second power source comprises a battery.
3. The redundant low voltage power supply circuit of claim 1, wherein the positive terminal of the first power source and the positive terminal of the second power source are both electrically connected to the first load branch, and the negative terminal of the first power source and the negative terminal of the second power source are grounded;
the first connection end of the switch component is electrically connected with the power supply connection node of the first load branch, the second connection end of the switch component is electrically connected with the power supply connection node of the second load branch and the positive electrode end of the third power supply, and the negative electrode end of the third power supply is grounded.
4. The redundant low voltage power supply circuit of claim 3 wherein the first connection terminal of the switching component is between the positive terminal of the second power source and the power connection node of the first load branch; alternatively, the first and second liquid crystal display panels may be,
the first connection terminal of the switch member is located between the positive terminal of the first power supply and the positive terminal of the second power supply.
5. The redundant low voltage supply circuit according to claim 3 or 4, wherein the first load branch comprises at least one first load, a first end of the first load in the first load branch being electrically connected to the positive terminal of the first power supply;
the second load branch comprises at least one first load, a first end of the first load in the second load branch is electrically connected with a positive terminal of the third power supply, and a second end of the first load is grounded.
6. The redundant low voltage power supply circuit of claim 5 wherein the positive terminal of the first power source and the positive terminal of the third power source are each electrically connected to a first terminal of at least one second load, the second terminal of the second load being connected to ground.
7. The redundant low voltage power supply circuit of claim 6 wherein the first load comprises at least one of a vehicle door or a vehicle window and the second load comprises at least one of a vehicle control unit, a steering control unit, or a brake control unit.
8. The redundant low voltage supply circuit of claim 1 wherein said switching component comprises a metal oxide semiconductor field effect transistor.
9. The redundant low voltage power supply circuit of claim 1, further comprising:
the power monitoring part, the power monitoring end of power monitoring part respectively with first power with the third power electricity is connected, the on-off control end of power monitoring part with the control end electricity of switching part is connected.
10. A vehicle comprising a redundant low-voltage power supply circuit according to any one of claims 1 to 9.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202123196612.7U CN217063371U (en) | 2021-12-17 | 2021-12-17 | Redundant low-voltage power supply circuit and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202123196612.7U CN217063371U (en) | 2021-12-17 | 2021-12-17 | Redundant low-voltage power supply circuit and vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115296386A (en) * | 2022-10-09 | 2022-11-04 | 苏州维伟思医疗科技有限公司 | Power management system, power management method, power consumption device, electronic device, and medium |
| CN115366833A (en) * | 2022-09-09 | 2022-11-22 | 北京路凯智行科技有限公司 | Redundant power supply controller of mine unmanned vehicle |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115366833A (en) * | 2022-09-09 | 2022-11-22 | 北京路凯智行科技有限公司 | Redundant power supply controller of mine unmanned vehicle |
| CN115296386A (en) * | 2022-10-09 | 2022-11-04 | 苏州维伟思医疗科技有限公司 | Power management system, power management method, power consumption device, electronic device, and medium |
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