CN115459248B - Distribution circuits, distribution methods and electrical equipment - Google Patents

Abstract

Embodiments of the present application provide a power distribution circuit, a power distribution method and electrical equipment. The circuit includes: a power supply module; a first power supply module connected to the power distribution module to form a first power supply network together with the power distribution module. ; The second power supply module is connected to the power distribution module to form a second power supply network together with the power distribution module; the power distribution module includes a plurality of load interfaces, each of the load interfaces is connected to the first power supply network and/ Or the second power supply network; the first switch module is located between the load interface and the designated power supply network, and is used to control the conduction or disconnection of the path between the load interface and the designated power supply network, and the designated power supply network is the first power supply network. or a second power supply network. The power distribution circuit provided by the embodiment of the present application can realize the individual isolation of the failed load. At this time, the designated power supply network can also supply power to other loads connected to it, thereby improving the power supply efficiency of the power distribution circuit.

Description

Distribution circuits, distribution methods and electrical equipment

Technical Field

The present application relates to the field of power distribution technology, and more specifically, to a power distribution circuit, a power distribution method and power-consuming equipment.

Background technique

At present, electrical equipment usually has a demand for redundant power supply. To meet the above demand, technicians design a dual-grid power supply mode for electrical equipment.

In the dual grid power supply mode, user equipment includes a main grid and a secondary grid, and an isolator is installed between the main grid and the secondary grid to avoid mutual influence between the main grid and the secondary grid. When a power supply module in a certain power grid or a load connected to the power grid fails, the power grid usually stops supplying power to avoid burning out the load or power supply module.

However, when a load connected to the power grid fails, the power grid will stop supplying power. At this time, the power grid is unable to power other loads connected to it, resulting in low power supply efficiency.

Summary of the invention

Embodiments of the present application provide a power distribution circuit, a power distribution method and electrical equipment.

In a first aspect, embodiments of the present application provide a power distribution circuit, which includes a power distribution module; a first power supply module connected to the power distribution module to form a first power supply network together with the power distribution module; and a second power supply module. A module is connected to the power distribution module to form a second power supply network together with the power distribution module; the power distribution module includes a plurality of load interfaces, each load interface is connected to the first power supply network and/or the second power supply network; A switch module is provided between the load interface and the designated power supply network, and is used to control the conduction or disconnection of the path between the load interface and the designated power supply network. The designated power supply network is the first power supply network or the second power supply network.

In a second aspect, an embodiment of the present application provides a power distribution method, which is applied to a power distribution circuit as described in the first aspect, and there is at least one load interface in the power distribution circuit connected to a load, the method comprising: obtaining a target current, the target current refers to the current flowing through the target load; generating a first control signal for a designated switch module based on the target current, the designated switch module refers to a first switch module arranged between the target load interface and a designated power supply network, the target load interface is connected to the target load, and the designated power supply network is a first power supply network or a second power supply network; controlling the first switch module to be closed or opened according to the first control signal.

In a third aspect, embodiments of the present application provide an electrical equipment, which includes multiple loads and the power distribution circuit as described in the first aspect, and the multiple loads can be connected to multiple load interfaces.

Embodiments of the present application provide a power distribution circuit, a power distribution method and electrical equipment. A first switch module is provided between the load interface and the designated power supply network. The first switch module is used to control the connection between the designated power supply network and the load interface. The path is turned on or off. When the load connected to the load interface fails, the first switch module is opened to disconnect the path between the control designated power supply network and the load interface to achieve individual isolation of the failed load. , at this time, the designated power supply network can also supply power to other loads connected to it, improving the power supply efficiency of the distribution circuit.

BRIEF DESCRIPTION OF THE DRAWINGS

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

Figure 1 is a block diagram of a power distribution circuit provided by an embodiment of the present application.

Figure 2 is a block diagram of a power distribution circuit provided by an embodiment of the present application.

Figure 3 is a flow chart of a power distribution method provided by an embodiment of the present application.

Figure 4 is a flow chart of a power distribution method provided by another embodiment of the present application.

Figure 5 is a flow chart of a power distribution method provided by another embodiment of the present application.

Figure 6 is a block diagram of electrical equipment provided by an embodiment of the present application.

Detailed ways

The embodiments of the present application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application and cannot be understood as limiting the present application.

In order to enable those skilled in the art to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without making creative work are within the scope of protection of the present application.

Based on the above problems, embodiments of the present application provide a power distribution circuit. A first switch module is provided between the load interface and the designated power supply network. The first switch module is used to control the conduction of the path between the designated power supply network and the load interface. Or disconnected. When the load connected to the load interface fails, the first switch module is opened to disconnect the path between the control designated power supply network and the load interface to achieve individual isolation of the failed load. At this time, the designated The power supply network can also supply power to other loads connected to it, improving the power supply efficiency of the distribution circuit.

Please refer to Figure 1, which illustrates an exemplary structural diagram of a power distribution circuit 100 provided by an embodiment of the present application. The circuit 100 includes: a first power supply module 110, a power distribution module 120, a second power supply module 130, and a load interface 140. , the first switch module 150.

The first power supply module 110 is connected to the power distribution module 120 to form the first power supply network 11 together with the power distribution module. The first power supply module 110 is used to supply power to the loads connected to the first power supply network 11 . Optionally, the first power supply module 110 can also provide power to the power distribution module 120 .

The second power supply module 130 is connected to the power distribution module 120 to form the second power supply network 12 together with the power distribution module. The second power supply module 130 is used to supply power to the loads connected to the second power supply network 12 . Optionally, the second power supply module 130 can also provide power to the power distribution module 120 .

The power distribution module 120 is used to distribute the electric energy of the first power supply module 110 and/or the second power supply module 130 . The power distribution module 120 includes a plurality of load interfaces 140. The plurality of load interfaces 140 are connected to the first power supply network 11 and/or the second power supply network 12 for connecting multiple loads, so that the power distribution module 120 can distribute power to multiple loads. electrical energy. One end of the load interface 140 is used to connect a load, and the other end is connected to the first power supply module 110 and/or the second power supply module 130 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 1 does not constitute a limitation of this application.

The first switch module 150 is provided between the load interface 140 and the designated power supply network, and is used to control the conduction or disconnection of the path between the multiple load interfaces 140 and the designated power supply network, and the designated power supply network is the first power supply network 11 or the second power supply network 12. One end of the first switch module 150 is connected to the first load interface 141, and the other end is connected to the first power supply module 110, and/or the second power supply module 130. The embodiment of the present application does not exclude other specific connection methods, and the connection method shown in Figure 1 does not constitute a limitation of the present application. When the first switch module 150 is closed, the path between the load interface 140 and the designated power supply network is connected; when the first switch module 150 is opened, the path between the load interface 140 and the designated power supply network is disconnected.

In the embodiment of the present application, the power distribution module 120 can control the first switch module 150 to close or open according to the power supply demand and power supply parameters of the load. For example, when the current flowing through the load is too large, the first switch module 150 is controlled to open. To cut off the connection between the designated power supply network and the load. On the one hand, it improves the security of power supply by disconnecting the designated power supply network and the load and avoids irreversible damage to the power supply module or load. On the other hand, the designated power supply network The network can also continue to supply power to other loads, improving the power supply efficiency of the distribution circuit.

The number of first switch modules 150 is actually determined according to the number of load interfaces 140. Specifically, the number of first switch modules 150 is the same as the number of load interfaces 140, that is, the path between each load interface 140 and the designated power supply network. A first switch module 150 is provided on both sides.

To sum up, in the power distribution circuit provided by the embodiment of the present application, a first switch module is provided between the load interface and the designated power supply network. The first switch module is used to control the conduction of the path between the designated power supply network and the load interface. Or disconnected. When the load connected to the load interface fails, the first switch module is opened to disconnect the path between the control designated power supply network and the load interface to achieve individual isolation of the failed load. At this time, the designated The power supply network can also supply power to other loads connected to it, improving the power supply efficiency of the distribution circuit.

Please refer to Figure 2, which exemplarily shows a structural diagram of a power distribution circuit 100 provided by an embodiment of the present application. The circuit 100 includes: a first power supply module 110, a power distribution module 120, a second power supply module 130, and a load interface. First switch module.

Different from the embodiment of FIG. 1 , in the embodiment of FIG. 2 , the load interface includes a first load interface 141 and a second load interface 142 .

The first load interface 141 is used to connect the first load. The first load interface 141 is connected to both the first power supply network 11 and the second power supply network 12 , that is, both power supply networks can supply power to the first load connected to the first load interface 141 . One end of the first load interface 141 is used to connect the first load, and the other end is connected to the first power supply module 110 and the second power supply module 130 respectively. The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application.

The electrical equipment (the electrical equipment is provided with the power distribution circuit 100) can determine the first load connected to the first load interface 141 according to the safety performance requirements, importance, and priority requirements of the load. Taking the autonomous driving scenario as an example, the vehicle can determine the motor control system, brake control system, anti-lock braking system and other loads that are closely related to the safety of autonomous driving as the first load, and connect them to the first load interface 141 to To meet the redundant power supply requirements of the above loads, even if one power supply network fails, it can be powered through another power supply network to ensure the normal operation of the above loads.

The second load interface 142 is used to connect a second load. The second load interface 142 is connected to the first power supply network 11 , or the second load interface 142 is connected to the second power supply network 12 . That is, only one of the two power supply networks supplies power to the second load connected to the second load interface 142 . One end of the second load interface 142 is used to connect the second load, and the other end is connected to the first power supply module 110 or the second power supply module 130 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application.

The electrical equipment can determine the second load connected to the second load interface 142 based on the safety performance requirements, importance, and priority requirements of the load. Taking the autonomous driving scenario as an example, the vehicle can determine the lighting system, audio system and other loads that are weakly related to the safety of autonomous driving as the second load and connect them to the second load interface 142 .

In the embodiment of the present application, the first switch module includes a first switch submodule 151 and a second switch submodule 152 .

The first switch sub-module 151 is provided between the first load interface 141 and the first power supply network 11 and is used to control the conduction or disconnection of the path between the first load interface 141 and the first power supply network 11 . One end of the first switch sub-module 151 is connected to the first load interface 141 , and the other end is connected to the first power supply module 110 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the first switch sub-module 151 is closed, the path between the first load interface 141 and the first power supply network 11 is conductive; when the first switch sub-module 151 is opened, the path between the first load interface 141 and the first power supply network 11 is connected. The path between is broken. In the embodiment of the present application, when the first power supply network 11 supplies power to the first load connected to the first load interface 141, the first switch sub-module 151 is closed.

In an embodiment of the present application, the first switch submodule 151 may be a first smart fuse encapsulated with a first switch element, and the first smart fuse may realize a current detection function and a current reporting function, and may also realize a state control function of the first switch element inside it, such as controlling the first switch element to switch from a closed state to an open state according to an open control signal, or controlling the first switch element to switch from an open state to a closed state according to a closed control signal. The first switch element may be a metal-oxide-semiconductor field-effect transistor (MOSFET), hereinafter referred to as a MOS tube, or may be a triode, a thyristor or a relay, etc. The MOS tube may be an N-type MOS tube or a P-type MOS tube. In FIG2 , the first switch submodule 151 includes a third switch S3 and a fifth switch S5.

The second switch sub-module 152 is provided between the first load interface 141 and the second power supply network 12 and is used to control the conduction or disconnection of the path between the first load interface 141 and the second power supply network 12 . One end of the second switch sub-module 152 is connected to the first load interface 141 , and the other end is connected to the second power supply module 130 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the second switch sub-module 152 is closed, the path between the first load interface 141 and the second power supply network 12 is conductive; when the second switch sub-module 152 is opened, the path between the first load interface 141 and the second power supply network 12 is connected. The path between is broken. In the embodiment of the present application, when the second power supply network 12 supplies power to the first load connected to the first load interface 141, the second switch sub-module 152 is closed.

In this embodiment of the present application, the second switch sub-module 152 may be a second smart fuse encapsulated with a second switch element. The second smart fuse can realize the current detection function and the current reporting function, and can also realize the third internal control of the fuse. The state control function of the two switching elements is, for example, controlling the first switching element to switch from a closed state to an open state according to an opening control signal, or controlling the first switching element to switch from an open state to a closed state according to a closing control signal. The above-mentioned second switching element may be a MOS tube, a triode, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor. In Figure 2, the second switch sub-module 152 includes a fourth switch S4 and a sixth switch S6.

It should be noted that when the first switch sub-module 151 is closed, the second switch sub-module 152 is open. On the contrary, with the first switch sub-module 151 open, the second switch sub-module 152 is closed. That is, usually only one of the first switch sub-module 151 and the second switch sub-module 152 is in a closed state. Through the above method, problems such as power waste and safety hazards caused by two power supply networks supplying power to the first load at the same time can be avoided, power supply security can be improved, and power can be saved.

In this embodiment of the present application, the first switch module also includes a seventh switch sub-module 153 . The seventh switch sub-module 153 is provided between the second load interface 142 and the first power supply network 11 and is used to control the conduction or disconnection of the path between the second load interface 142 and the first power supply network 11 . Alternatively, the seventh switch sub-module 153 is provided between the second load interface 142 and the second power supply network 12 to control the conduction or disconnection of the path between the second load interface 142 and the second power supply network 12 . One end of the seventh switch sub-module 153 is connected to the second load interface 142 , and the other end is connected to the first power supply module 110 . Alternatively, one end of the seventh switch sub-module 153 is connected to the second load interface 142 and the other end is connected to the second power supply module 130 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. In the case where the seventh switch sub-module 153 is provided between the second load interface 142 and the first power supply network 11, if the seventh switch sub-module 153 is closed, the path between the second load interface 142 and the first power supply network 11 is conductive. If the seventh switch sub-module 153 is turned on, the path between the second load interface 142 and the first power supply network 11 is disconnected. In the case where the seventh switch sub-module 153 is disposed between the second load interface 142 and the second power supply network 12, if the seventh switch sub-module 153 is closed, the connection between the second load interface 142 and the second power supply network 12 will The path is turned on; if the seventh switch sub-module 153 is turned on, the path between the second load interface 142 and the second power supply network 12 is disconnected.

In the embodiment of the present application, the seventh switch sub-module 153 may be a seventh smart fuse encapsulated with a seventh switch element. The seventh smart fuse can realize the current detection function and the current reporting function, and can also realize the third internal control function. The state control function of the seven switching elements, for example, controls the seventh switching element to switch from a closed state to an open state according to an opening control signal, or controls the seventh switching element to switch from an open state to a closed state according to a closing control signal. The above-mentioned seventh switching element may be a MOS tube, a triode, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor. In Figure 2, the seventh switch sub-module 153 includes a first switch S1 and a second switch S2.

Different from the embodiment of FIG. 1 , the circuit 100 also includes a second switch module 210 . The second switch module 210 is disposed between the first power supply module 110 and the power distribution module 120 and is used to control the conduction or disconnection of the path between the first power supply module 110 and the power distribution module 120 . One end of the second switch module 210 is connected to the first power supply module 110 , and the other end is connected to the first switch module 150 . Specifically, the other end of the second switch module 210 is connected to the first switch sub-module 151 and the seventh switch sub-module 153 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the second switch module 210 is closed, the path between the first power supply module 110 and the power distribution module 120 is connected; when the second switch module 210 is opened, the path between the first power supply module 110 and the power distribution module 120 is disconnected. open. In the embodiment of the present application, the power distribution module 120 can control the second switch module 210 to close or open according to the state of the first power supply module 110. For example, when the voltage at the output end of the first power supply module 210 is too high, the second switch is controlled. The module 210 is opened to cut off the connection between the first power supply module 110 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the first power supply module 110 or the load.

In the embodiment of the present application, the first power supply module 110 includes a first DC converter 111 and a first battery 112 . The first DC converter 111 and the first battery 112 are connected to both ends of the power distribution module 120 respectively. That is, the first DC converter 111 is connected to one end of the power distribution module 120 , and the first battery 112 is connected to the other end of the power distribution module 120 . The first DC converter 111 and the first battery 112 may be selected as the power source in the first power supply network 11 .

In this embodiment of the present application, the second switch module 210 includes a third switch sub-module 211 and a fourth switch sub-module 212 .

The third switch sub-module 211 is provided between the first DC converter 111 and the power distribution module 120 and is used to control the conduction or disconnection of the path between the first DC converter 111 and the power distribution module 120 . One end of the third switch sub-module 211 is connected to the first DC converter 111 , and the other end is connected to the first switch module 150 . The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the third switch sub-module 211 is closed, the path between the first DC converter 111 and the power distribution module 120 is conductive; when the third switch sub-module 211 is opened, the first DC converter 111 and the power distribution module 120 are connected. The path between 120 is broken. In the embodiment of the present application, the power distribution module 120 can control the second switch module 210 to close or open according to the state of the first DC converter 111, for example, when the voltage at the output end of the first DC converter 111 is too high. The third switch sub-module 211 is controlled to open to cut off the connection between the first DC converter 111 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the first DC converter 111 or the load.

The third switch sub-module 211 may be a third smart fuse encapsulated with a third switching element. The third smart fuse can realize the voltage detection function and the voltage reporting function, and can also realize the state control function of the third switching element inside it. . The third switching element may be a MOS tube, a transistor, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor.

In Figure 2, the third switch sub-module 211 includes the ninth switch Q1. The third switch element is a double-back MOS transistor, which includes two N-type MOS transistors. The D pole of the first MOS transistor is connected to the first DC At the output end of the converter 111, the S pole is connected to the S pole of the second MOS tube, and the D pole of the second MOS tube is connected to the first switch module 150 (specifically including the first switch sub-module 151 and the seventh switch sub-module 153). of the control end.

The fourth switch sub-module 212 is provided between the first battery 112 and the power distribution module 120 and is used to control the conduction or disconnection of the path between the first battery 112 and the power distribution module 120 . One end of the fourth switch sub-module 212 is connected to the first battery 112, and the other end is connected to the control end of the first switch module 150 (specifically including the first switch sub-module 151 and the seventh switch sub-module 153). The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the fourth switch sub-module 212 is closed, the path between the first battery 112 and the power distribution module 120 is connected; when the fourth switch sub-module 212 is opened, the path between the first battery 112 and the power distribution module 120 is disconnected. open. In the embodiment of the present application, the power distribution module 120 can control the fourth switch sub-module 212 to close or open according to the state of the first battery 112. For example, when the voltage at the output end of the first battery 112 is too high, the fourth switch sub-module is controlled. The module 212 is opened to cut off the connection between the first battery 112 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the first battery 112 or the load.

The fourth switch sub-module 212 may be a fourth smart fuse encapsulated with a fourth switching element. The fourth smart fuse can implement a voltage detection function and a voltage reporting function, and can also implement a state control function of the fourth switching element inside it. . The fourth switching element may be a MOS tube, a triode, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor. In Figure 2, the fourth switch sub-module 212 includes a seventh switch S7. The fourth switch element is an N-type MOS transistor. The D pole of the N-type MOS transistor is connected to the control terminal of the first switch sub-module 151, and the S pole is connected to the control terminal of the first switch sub-module 151. The output terminal of the first battery 112 is connected.

It should be noted that, when the third switch submodule 211 is closed, the fourth switch submodule 212 is disconnected. On the contrary, when the third switch submodule 211 is opened, the fourth switch submodule 212 is closed. That is, usually only one of the third switch submodule 211 and the fourth switch submodule 212 is in a closed state. In the above manner, the problems of power waste and safety hazards caused by the first DC converter 111 and the first battery 112 simultaneously supplying power to the load connected to the first power supply network 11 can be avoided, the power supply safety is improved, and power is saved.

Different from the embodiment of FIG. 1 , the circuit 100 also includes a third switch module 220 . The third switch module 220 is provided between the second power supply module 130 and the power distribution module 120 and is used to control the conduction or disconnection of the path between the second power supply module 130 and the power distribution module 120 . In FIG. 2 , one end of the third switch module 220 is connected to the second power supply module 130 , and the other end is connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153 ). The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the third switch module 220 is closed, the path between the second power supply module 130 and the power distribution module 120 is connected; when the third switch module 220 is opened, the path between the second power supply module 130 and the power distribution module 120 is disconnected. open. In the embodiment of the present application, the power distribution module 120 can control the third switch module 220 to close or open according to the status of the second power supply module 130. For example, the third switch is controlled when the voltage at the output end of the second power supply module 130 is too high. The module 220 is opened to cut off the connection between the second power supply module 130 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the second power supply module 130 or the load.

In the embodiment of the present application, the second power supply module 130 includes a second DC converter 131 and a second battery 132 . The second DC converter 131 and the second battery 132 are connected to both ends of the power distribution module 120 respectively. That is, the second DC converter 131 is connected to one end of the power distribution module 120 , and the second battery 132 is connected to the other end of the power distribution module 120 . The second DC converter 131 and the second battery 132 may be selected as the power source in the second power supply network 12 . Furthermore, the second DC converter 131 can also charge the second battery 132 .

In the embodiment of the present application, the third switch module 220 includes a fifth switch sub-module 221 and a sixth switch sub-module 222 .

The fifth switch sub-module 221 is provided between the second DC converter 131 and the power distribution module 120, and is used to control the conduction or disconnection of the path between the second DC converter 131 and the power distribution module 120. In Figure 2, one end of the fifth switch sub-module 221 is connected to the second DC converter 131, and the other end is connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153). connect. The embodiments of this application do not exclude other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation of this application. When the fifth switch sub-module 221 is closed, the path between the second DC converter 131 and the power distribution module 120 is conductive; when the fifth switch sub-module 221 is opened, the path between the second DC converter 131 and the power distribution module 120 is opened. The path between is broken. In the embodiment of the present application, the power distribution module 120 can control the fifth switch sub-module 221 to close or open according to the state of the second DC converter 131, for example, when the voltage at the output end of the second DC converter 131 is too high. The fifth switch sub-module 221 is opened to cut off the connection between the second DC converter 131 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the second DC converter 131 or the load.

The fifth switch sub-module 221 may be a fifth smart fuse encapsulated with a fifth switch element. The fifth smart fuse can realize the voltage detection function and the voltage reporting function, and can also realize the status control function of the fifth switch element inside it. . The fifth switching element may be a MOS tube, a triode, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor.

In FIG. 2 , the fifth switch sub-module 221 includes the tenth switch Q2 . The fifth switch element is a double-back MOS transistor. For its connection method, please refer to the description of the third switch element.

The sixth switch sub-module 222 is provided between the second battery 132 and the power distribution module 120 and is used to control the conduction or disconnection of the path between the second battery 132 and the power distribution module 120 . In FIG. 2 , one end of the sixth switch sub-module 222 is connected to the second battery 132 , and the other end is connected to the control end of the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153 ). The embodiments of this application do not rule out other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation on this application. When the sixth switch sub-module 222 is closed, the path between the second battery 132 and the power distribution module 120 is connected; when the sixth switch sub-module 222 is opened, the path between the second battery 132 and the power distribution module 120 is disconnected. open. In the embodiment of the present application, the power distribution module 120 can control the sixth switch sub-module 222 to close or open according to the state of the second battery 132. For example, when the voltage at the output end of the second battery 132 is too high, the sixth switch sub-module is controlled. The module 222 is opened to cut off the connection between the second battery 132 and the power distribution module 120 to improve power supply security and avoid irreversible damage to the second battery 132 or the load.

The sixth switch sub-module 222 may be a sixth smart fuse encapsulated with a sixth switch element. The sixth smart fuse can implement a voltage detection function and a voltage reporting function, and can also implement a state control function of the sixth switch element inside it. . The sixth switching element may be a MOS tube, a transistor, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor. In Figure 2, the sixth switch sub-module 222 includes an eighth switch S8. The sixth switch element is an N-type MOS transistor. For its connection method, please refer to the description of the fourth switch element.

It should be noted that when the fifth switch sub-module 221 is closed, the sixth switch sub-module 222 is open. On the contrary, with the fifth switch sub-module 221 open, the sixth switch sub-module 222 is closed. That is, usually only one of the fifth switch sub-module 221 and the sixth switch sub-module 222 is in a closed state. Through the above method, problems such as power waste and safety hazards caused by the second DC converter 131 and the second battery 132 simultaneously supplying power to the load connected to the second power supply network can be avoided, power supply security can be improved, and power can be saved.

Different from the embodiment of FIG. 1 , the circuit 100 further includes a fourth switch module 230 . The fourth switch module 230 is provided between the second switch module 210 and the third switch module 230 and is used to control the conduction or disconnection of the path between the first power supply network 11 and the second power supply network 12 . Specifically, one end of the fourth switch module 230 is connected to the common end of the third switch sub-module 211 and the fourth switch sub-module 212 and the first switch module 150 (specifically including the first switch sub-module 151 and the seventh switch sub-module 153 ), and the other end is connected to the common end of the fifth switch sub-module 221 and the sixth switch sub-module 222 and the first switch module 150 (specifically including the second switch sub-module 152 and the seventh switch sub-module 153). The embodiments of this application do not rule out other specific connection methods, and the connection method shown in Figure 2 does not constitute a limitation on this application. When the fourth switch module 230 is closed, the path between the first power supply network 11 and the second power supply network 12 is conductive; when the fourth switch module 230 is opened, the path between the first power supply network 11 and the second power supply network 12 is open. The path is broken. In the embodiment of the present application, the fourth switch module 230 is in a normally open state.

In the embodiment of the present application, the power distribution module 120 can control the fourth switch module 230 to close or open according to the status of the first power supply network 11 and the second power supply network 12. For example, when the first power supply network 11 can supply power normally but the When the second power supply network 12 cannot supply power normally, the fourth switch module 230 is controlled to close to open the path between the first power supply network 11 and the second power supply network 12 so that the first power supply network 11 can connect to the second power supply network 12 redundant power supply to the load; or, when the second power supply network 12 can provide normal power supply but the first power supply network 11 cannot provide normal power supply, the fourth switch module 230 is controlled to close to connect the first power supply network 11 and the second power supply network. 12, so that the second power supply network 12 can provide redundant power supply to the loads connected to the first power supply network 11.

The fourth switch module 230 may be an eighth smart fuse encapsulated with an eighth switch element. The eighth smart fuse can implement a voltage detection function and a voltage reporting function, and can also implement a state control function of the eighth switch element inside it. The eighth switching element may be a MOS tube, a triode, a thyristor, a relay, etc. The above-mentioned MOS transistor may be an N-type MOS transistor or a P-type MOS transistor.

In Figure 2, the fourth switch module 230 includes the eleventh switch Q3, and the eighth switch element is a double-back MOS transistor, which includes two N-type MOS transistors. The D pole of the first MOS transistor is connected to the first switch sub-section. The D pole and S pole of the second MOS transistor of the module 151 are connected to the S pole of the second MOS transistor, and the D pole of the second MOS transistor is connected to the D pole of the second MOS transistor of the second switch sub-module 152 .

To sum up, embodiments of the present application provide a power distribution circuit, in which a switch module (including a second switch module and a third switch) is provided between a power supply module (including a first power supply module and a second power supply module) and a power distribution module. module), so that when the power supply module fails, the path between the power supply module and the power distribution module can be disconnected to protect the power supply module and the load; in addition, a power supply module is provided between the first power distribution network and the second power distribution network. switch module (the fourth switch module), so that when one of the power supply networks fails to work, the switch module is controlled to close to open the path between the first power supply network and the second power supply network, so that the normally working power supply network can The loads connected to the normally working power supply network are powered, thereby achieving redundant power supply and improving power supply efficiency.

3 , an embodiment of the present application provides a power distribution method, which can be applied to a power distribution module, and there is at least one load interface in the power distribution circuit connected to a load. The method can include steps S310 to S330.

Step S310, obtaining a target current.

Target current refers to the current flowing through the target load. The target load can be any load connected to the distribution circuit. As mentioned in the above embodiment, the first smart fuse, the second smart fuse, and the seventh smart fuse all have current detection and current reporting functions, so the power distribution module can receive the current value reported by the above smart fuse.

Step S320: Generate a first control signal for the designated switch module according to the target current.

The designated switch module refers to the first switch module disposed between the target load interface and the designated power supply network. The target load interface is connected to the target load, and the designated power supply network is the first power supply network or the second power supply network.

In an embodiment of the present application, the power distribution module controls the target load according to the magnitude of the current flowing through it. If the current is too large, the designated switch module is controlled to disconnect, so that the path between the designated power supply network and the target load interface is disconnected.

In the case where the load interface is the first load interface, if the first switch sub-module included in the first switch module is in the closed state and the second switch sub-module is in the open state, and if the target current is greater than the first current threshold, then a corresponding The first open signal of the first switch sub-module is used to control the first switch sub-module to switch from the closed state to the open state. At this time, the path between the first power supply network and the target load interface is disconnected, and the first power supply network cannot provide the first switch sub-module with the first switch sub-module. One load is powered. In some embodiments, the power distribution module also generates a first closing signal for the second switch sub-module. At this time, the path between the second power supply network and the target load interface is turned on, and the second power supply network

The network supplies power to the first load.

In the case where the load interface is the first load interface, if the first switch sub-module included in the first switch module is in the open state and the second switch sub-module is in the closed state, and if the target current is greater than the first current threshold, a corresponding The second open signal of the second switch sub-module is used to control the second switch sub-module to switch from the closed state to the open state. At this time, the path between the second power supply network and the target load interface is disconnected, and the second power supply network cannot provide power to the second switch sub-module. One load is powered. In some embodiments, the power distribution module also generates a second closing signal for the first switch sub-module. At this time, the path between the first power supply network and the target load interface is turned on, and the first power supply network supplies power to the first load.

In the case where the load interface is the second load interface, if the seventh switch sub-module included in the first switch module is in a closed state, and if the target current is greater than the second current threshold, a seventh open switch for the seventh switch sub-module is generated. The signal is used to control the seventh switch sub-module to switch from the closed state to the open state. At this time, the path between the first power supply network and the target load interface is disconnected, and the designated power supply network cannot supply power to the second load. The designated power supply network is the first power supply network or the second power supply network.

The above-mentioned first current threshold is determined according to the first load, which is usually the short-circuit current of the first load. The above-mentioned second current threshold is determined according to the second load, which is usually the short-circuit current of the second load. The first current threshold and the second current threshold may be equal or unequal.

Step S330: Control the first switch module to close or open according to the first control signal.

As mentioned in the above embodiment, the first smart fuse, the second smart fuse, and the seventh smart fuse all have the control function of the switching element.

When the first control signal is a first opening signal, the smart fuse can control the switch element therein to open, and when the first control signal is a first closing signal, the smart fuse can control the switch element therein to close.

In some embodiments, the smart fuse controls the switching element within it to open or close by outputting different levels. Taking the switching element as an NMOS tube as an example, the smart fuse controls the input of the first level to the input terminal of the switching element, so that the voltage of the G level in the NMOS tube is lower than the voltage of the S pole, and the turn-on condition of the NMOS tube cannot be reached, thus making the The switching element is turned on; the smart fuse controls the input of a second level to the input terminal of the switching element, so that the voltage of the G level in the NMOS tube is higher than the voltage of the S pole, which can achieve the opening condition of the NMOS tube, causing the first switching element to close . The first level is less than the second level.

In summary, embodiments of the present application provide a power distribution method that controls the first switch module to close or open based on the current flowing through the target load. When the current flowing through the target load is too large, it is considered that the target load has a large If a fault occurs, the first switch module is controlled to open to disconnect the target load from the designated power supply network to isolate the target load. At this time, the designated power supply network can continue to supply power to other loads, thereby improving power distribution. The power supply efficiency of the circuit.

Please refer to Figure 4. Figure 4 is a flow chart of a power distribution method provided by an embodiment of the present application. This method can be applied to a power distribution module. The method may include steps S410 to S450.

Step S410, obtain the first target voltage.

The first target voltage refers to the voltage of the output terminal of the first power supply module. In this embodiment of the present application, the first power supply module includes a first DC converter and a first battery. When the first battery provides electric energy to a load connected to the first power supply network, the first target voltage is the voltage of the output terminal of the first battery. When the first DC converter provides electric energy to the load connected to the first power supply network, the first target voltage is the voltage at the output end of the first DC converter.

In the above embodiment, it is mentioned that the third smart fuse and the fourth smart fuse have voltage detection and voltage reporting functions, so the power distribution module can receive the voltage values reported by the above smart fuses.

Step S420: Generate a second control signal for the second switch module according to the first target voltage.

In the embodiment of the present application, the power distribution module controls the second switch module according to the size of the first target voltage. If the first target voltage is too large, the second switch module is controlled to be disconnected, so that the first power supply module is connected to the distribution module. The path between electrical modules is broken.

If the fourth switch sub-module included in the second switch module is in a closed state, it means that the first battery is used to supply power to the load in the first power supply network. When the voltage of the output terminal of the first battery is greater than the first voltage threshold, a third opening signal for the fourth switch sub-module is generated to control the fourth switch sub-module to switch from the closed state to the open state. At this time, the first battery and The path between the loads connected to the first power supply network is disconnected, and the first battery cannot supply power to the loads connected to the first power supply network.

In some embodiments, if the third switch sub-module is in an open state, the power distribution module also generates a third closing signal for the third switch sub-module. At this time, the load connected to the first DC converter and the first power supply network The paths between them are connected, and the first DC converter supplies power to the load connected to the first power supply network.

If the third switch sub-module included in the second switch module is in a closed state, it means that the first DC converter is used to supply power to the load in the first power supply network. When the voltage at the output end of the first DC converter is greater than the second voltage threshold, a fourth open signal for the third switch sub-module is generated to control the third switch sub-module to switch from the closed state to the open state. At this time, the third switch sub-module is switched from the closed state to the open state. The path between the DC converter and the load connected to the first power supply network is disconnected, and the first DC converter cannot supply power to the load connected to the first power supply network.

Both the first voltage threshold and the second voltage threshold can be set based on experiments or experience, and this is not limited in the embodiments of the present application. The first voltage threshold and the second voltage threshold may be equal or unequal.

Step S430: Control the second switch module to open or close according to the second control signal.

For the second control signal to control the opening or closing of the second switch module, reference may be made to step S330 in the embodiment of FIG. 3 , which will not be described again here.

Step S440: After controlling the second switch module to open and the third switch module to be closed, generate a fourth control signal for the fourth switch module.

In this embodiment of the present application, the power distribution module also controls the fourth switch module according to the states of the second switch module and the third switch module.

In some embodiments, when neither the first battery nor the first DC converter in the first power supply module is able to supply power to the load in the first power supply network, if the second power supply network can supply power normally at this time, then Generate an eighth closing signal for the fourth switch module, the eighth closing signal can cause the fourth switch module to close, thereby conducting the path between the first power supply network and the second power supply network, so that the second power supply network can be The load connected to the first power supply network supplies power, which can improve power supply efficiency.

Step S450: Control the fourth switch module to switch from the open state to the closed state according to the fourth control signal.

For the fourth control signal to control the opening or closing of the eighth switch module, reference may be made to step S330 in the embodiment of FIG. 3 , which will not be described again here.

In summary, the embodiment of the present application provides a power distribution method, which controls the second switch module to be closed or opened according to the voltage at the output end of the first power supply module. When the voltage at the output end of the first power supply module is too large, the second switch module can be controlled to be opened to disconnect the load connected to the first power supply network from the first power supply module, thereby protecting the load in the first power supply network and avoiding safety hazards. In addition, when the first power supply network cannot work normally, the fourth switch module is controlled to be closed to conduct the path between the first power supply network and the second power supply network, so that the second power supply network can supply power to the load connected to the first power supply network, thereby improving the power supply efficiency.

Please refer to Figure 5. Figure 5 is a flow chart of a power distribution method provided by an embodiment of the present application. This method can be applied to a power distribution module. The method may include steps S510 to S550.

Step S510, obtain the second target voltage.

The second target voltage refers to the voltage of the output terminal of the second power supply module. In this embodiment of the present application, the first power supply module includes a second DC converter and a second battery. When the second battery provides electric energy to the load connected to the second power supply network, the second target voltage is the voltage of the output terminal of the second battery. When the second DC converter provides electric energy to the load connected to the second power supply network, the second target voltage is the voltage at the output end of the second DC converter. As mentioned in the above embodiment, the fifth smart fuse and the sixth smart fuse have voltage detection and voltage reporting functions, so the power distribution module can receive the voltage value reported by the above-mentioned smart fuse.

Step S520: Generate a third control signal for the third switch module according to the second target voltage.

In the embodiment of the present application, the power distribution module controls the second target voltage according to the size of the second target voltage. If the second target voltage is too large, the third switch module is controlled to be disconnected, so that the second power supply module and the power distribution module The path between is broken.

In the case where the second power supply module includes a second DC converter and a second battery, the third switch module includes a fifth switch sub-module and a sixth switch sub-module, wherein the fifth switch sub-module is used to control the second DC converter. The sixth switch sub-module is used to control the disconnection or conduction of the path between the second battery and the power distribution module.

If the sixth switch sub-module included in the third switch module is in a closed state, it means that the second battery is used to supply power to the load in the second power supply network. When the voltage of the output terminal of the second battery is greater than the third voltage threshold, a fifth opening signal for the sixth switch sub-module is generated to control the sixth switch sub-module to switch from the closed state to the open state. At this time, the second battery and The path between the loads connected to the second power supply network is disconnected, and the second battery cannot supply power to the loads connected to the second power supply network.

In some embodiments, if the fifth switch sub-module is in an open state, the power distribution module also generates a fifth closing signal for the fifth switch sub-module. At this time, the second DC converter is connected to the load connected to the second power supply network. The path between them is connected, and the second DC converter supplies power to the load connected to the second power supply network.

If the fifth switch submodule included in the third switch module is in a closed state, it means that the load in the second power supply network is powered by the second DC converter. When the voltage of the second DC converter is greater than the fourth voltage threshold, a sixth opening signal for the fifth switch submodule is generated to control the fifth switch submodule to switch from a closed state to an open state, at which time the path between the second DC converter and the load connected to the second power supply network is disconnected, and the second DC converter cannot power the load connected to the second power supply network.

Both the third voltage threshold and the fourth voltage threshold can be set based on experiments or experience, and this is not limited in the embodiments of the present application. The third voltage threshold and the fourth voltage threshold may be equal or unequal.

Step S530: Control the third switch module to open or close according to the third control signal.

For the third control signal controlling the opening or closing of the third switch module, reference may be made to step S330 of the embodiment of FIG. 3 , which will not be described in detail herein.

Step S540: After controlling the third switch module to open and the second switch module to close, a fourth control signal is generated.

In this embodiment of the present application, the power distribution module also controls the fourth switch module according to the states of the second switch module and the third switch module.

In some embodiments, when neither the second battery nor the second DC converter in the second power supply module is able to supply power to the load in the second power supply network, if the first power supply network can supply power normally at this time, then a For the eighth closing signal of the fourth switch module, the eighth closing signal can cause the fourth switch module to close, thereby opening the path between the first power supply network and the second power supply network, so that the first power supply network can provide the third power supply network. The load connected to the second power supply network is supplied with power, which can improve the power supply efficiency.

Step S550: Control the fourth switch module to switch from an open state to a closed state according to the fourth control signal.

The fourth control signal controls the opening or closing of the eighth switch module, which can refer to step S330 of the embodiment of FIG. 3 and will not be described in detail here.

In summary, embodiments of the present application provide a power distribution method that controls the third switch module to close or open according to the voltage at the output end of the second power supply module. When the voltage at the output end of the second power supply module is too high, the third switch module can be controlled to close or open. The three switch modules are opened to disconnect the load connected to the second power supply network from the second power supply module to protect the load in the second power supply network and avoid potential safety hazards. In addition, when the second power supply network cannot operate normally, the fourth switch module is controlled to close to open a path between the first power supply network and the second power supply network, so that the second power supply network can provide the first power supply network. The load connected to the power supply network is supplied with power, which can improve the power supply efficiency.

Please refer to Figure 6. This embodiment of the present application also provides an electrical device 600. The electrical device 600 may be an electrical device with multiple user loads, such as a vehicle, a cabinet, etc. The electrical device 600 includes the aforementioned implementation. The power distribution circuit 100 and the plurality of loads 610 described in the example are respectively connected to the plurality of load interfaces of the power distribution circuit 100.

The above are only preferred embodiments of the present application and are not intended to limit the present application in any form. Although the present application has been disclosed as above with preferred embodiments, they are not intended to limit the present application. Any person skilled in the art may Without departing from the scope of the technical solution of the present application, the technical content disclosed above can be used to make some changes or modifications to equivalent embodiments with equivalent changes. Any brief modifications, equivalent changes and modifications made to the above embodiments still fall within the scope of the technical solution of the present application.

Claims (8)

1. A power distribution circuit, characterized in that the circuit comprises: power distribution module; A first power supply module connected to the power distribution module to form a first power supply network together with the power distribution module; a second power supply module connected to the power distribution module to form a second power supply network together with the power distribution module; The power distribution module includes a plurality of load interfaces, each of the load interfaces is connected to the first power supply network and/or the second power supply network; the plurality of load interfaces include a first load interface and a second load. Interface, the first load interface is used to connect the first load, the second load interface is used to connect the second load; the first load interface is connected to both the first power supply network and the second power supply network ;The second load interface is connected to the first power supply network or the second power supply network; A first switch module is provided between the load interface and the designated power supply network, and is used to control the path between the load interface and the designated power supply network based on the current flowing through the load connected to the load interface. On or off, the designated power supply network is the first power supply network or the second power supply network; A second switch module is provided between the first power supply module and the power distribution module; A third switch module is located between the second power supply module and the power distribution module; A fourth switch module is provided between the second switch module and the third switch module. The fourth switch module is used to control the path between the first power supply network and the second power supply network. On or off; Wherein, the first switch module includes a first switch submodule, a second switch submodule, and a seventh switch submodule; The first switch sub-module is provided between the first load interface and the first power supply network, and is used to control the first load interface based on the current flowing through the load connected to the first load interface. The connection or disconnection of the path with the first power supply network; The second switch sub-module is provided between the first load interface and the second power supply network, and is used to control the first load interface based on the current flowing through the load connected to the first load interface. The connection or disconnection of the path with the second power supply network; The seventh switch sub-module is provided between the second load interface and the first power supply network, and is used to control the second load interface based on the current flowing through the load connected to the second load interface. The connection or disconnection of the path between the first power supply network and the first power supply network; or, the seventh switch sub-module is provided between the second load interface and the second power supply network for controlling the The current of the load connected to the second load interface controls the conduction or disconnection of the path between the second load interface and the second power supply network. 2. The power distribution circuit according to claim 1, characterized in that the second switch module is used to control the conduction or disconnection of the path between the first power supply module and the power distribution module; The third switch module is used to control the conduction or disconnection of the path between the second power supply module and the power distribution module. 3. The power distribution circuit according to claim 2, wherein the first power supply module includes a first DC converter and a first battery, and the first DC converter and the first battery respectively Connected to both ends of the power distribution module; the second switch module includes a third switch sub-module and a fourth switch sub-module; wherein the third switch sub-module is provided between the first DC converter and the fourth switch sub-module. Between the power distribution modules, the fourth switch sub-module is provided between the first battery and the power distribution module; The second power supply module includes a second DC converter and a second battery, and the second DC converter and the second battery are respectively connected to both ends of the power distribution module; the third switch module includes a Five switch sub-modules and a sixth switch sub-module; wherein, the fifth switch sub-module is provided between the second DC converter and the power distribution module, and the sixth switch sub-module is provided between the second DC converter and the power distribution module. between the two batteries and the power distribution module. 4. A power distribution method, characterized in that it is applied to the power distribution circuit according to any one of claims 1 to 3, and there is at least one load interface connected to a load in the power distribution circuit, and the method includes: Obtaining a target current, where the target current refers to a current flowing through a target load; Generate a first control signal for a designated switch module according to the target current. The designated switch module refers to the first switch module disposed between the target load interface and the designated power supply network. The target load interface and the target load Connection, the designated power supply network is the first power supply network or the second power supply network; The first switch module is controlled to be closed or opened according to the first control signal. 5. The method according to claim 4, wherein the target load interface is a first load interface, the designated switch module includes a first switch sub-module and a second switch sub-module; the first control signal It includes a first opening signal and a first closing signal, or the first control signal includes a second opening signal and a second closing signal; Generating a first control signal for the first switch module according to the target current includes: When the first switch submodule is closed and the second switch submodule is open, if the target current is greater than the current threshold, the first open signal and the first close signal are generated, the first switch submodule is controlled to be open according to the first open signal, and the second switch submodule is controlled to be closed according to the first close signal; When the first switch sub-module is open and the second switch sub-module is closed, if the target current is greater than the current threshold, the second open signal and the second closed signal are generated. According to the first The second opening signal controls the second switch sub-module to open, and the first switch sub-module is controlled to close according to the second closing signal. 6. The method according to claim 4 or 5, characterized in that the method further comprises: Obtaining a first target voltage, where the first target voltage refers to a voltage at an output end of a first power supply module; Generate a second control signal for the second switch module according to the first target voltage; Control the second switch module to open or close according to the second control signal; and / or, Obtain a second target voltage, where the second target voltage refers to the voltage of the output terminal of the second power supply module; Generate a third control signal for the third switch module according to the second target voltage; The third switch module is controlled to open or close according to the third control signal. 7. The method according to claim 6, characterized in that the method further comprises: After the second switch module is controlled to be opened and the third switch module is closed, or after the third switch module is controlled to be opened and the second switch module is closed, generating a fourth control signal; The fourth switch module is controlled to switch from an open state to a closed state according to the fourth control signal. 8. An electrical equipment, characterized by comprising a plurality of loads, and the power distribution circuit according to any one of claims 1 to 3, wherein the plurality of loads are connected to the plurality of load interfaces .