Power connection control device, power connection system and vehicle

Abstract

The invention provides a power-on control device, and the device comprises a first power-on branch circuit which comprises a voltage conversion circuit, is suitable for being connected with an undervoltage device and a power-on power supply, and is used for being switched on under the drive of a first level signal; and the second power-on branch is suitable for being connected with the power-lack equipment and the power-on power supply and is used for being switched on under the driving of the second level signal. Through the mode, the power-on power supply with the voltage smaller than the starting voltage of the power-lack equipment can be used for power-on starting of the power-lack equipment, and the power-on power supply with the same starting voltage as the starting voltage of the power-lack equipment can also be used for power-on starting of the power-lack equipment.

Description

Technical Field

[0001] The present invention relates to the field of jump starting, and in particular to a jump starting control device, a jump starting system and a vehicle. Background Art

[0002] With technological advancements, the number of vehicles equipped with 48V low-voltage systems has begun to increase. However, there are currently no 48V emergency jump-start control devices on the market. When a vehicle equipped with a 48V low-voltage system needs to be jump-started, an external 12V power supply is typically used to boost the voltage. Existing jump-start solutions have a fixed boost ratio, making non-12V jump-start power supplies unsuitable for emergency jump-starting vehicles equipped with a 48V low-voltage system. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide a jump-start control device, a jump-start system, and a vehicle that overcome the above problems or at least partially solve the above problems.

[0004] In order to achieve the above object, according to a first aspect of the present invention, there is provided a jumper control device, comprising: A first jumper branch, comprising a voltage conversion circuit, wherein the first jumper branch is adapted to connect a power-deficient device and a jumper power supply, and is configured to be turned on when driven by a first level signal; The second jumper branch is adapted to connect the power-deficient device and the jumper power supply, and is configured to be turned on when driven by a second level signal.

[0005] Through the above method, a defective device can be jump-started with a jump-start power supply whose voltage is lower than the starting voltage of the defective device, or with a jump-start power supply whose voltage is the same as the starting voltage of the defective device, thereby solving the problem that a non-12V jump-start power supply is not suitable for emergency jump-starting defective devices equipped with a 48V low-voltage system architecture.

[0006] Furthermore, the jumper control device according to claim 1 is characterized in that it also includes a controller, which is respectively connected to the jumper power supply, the first jumper branch and the second jumper branch, and the controller is used to output the first level signal when the voltage of the jumper power supply is within a first preset range, and output the second level signal when the voltage of the jumper power supply is within a second preset range.

[0007] Furthermore, the first jumper branch includes: a first ideal diode circuit and the voltage conversion circuit; A first end of the first ideal diode circuit is connected to the controller, a second end of the first ideal diode circuit is adapted to be connected to the jumper power supply, a third end of the first ideal diode circuit is connected to the second end of the voltage conversion circuit, and the first ideal diode circuit is configured to be turned on when driven by a first level signal; The first end of the voltage conversion circuit is connected to the controller, the third end of the voltage conversion circuit is suitable for connecting to the power-deficient device, and the voltage conversion circuit is used to boost or buck the voltage output by the first ideal diode circuit.

[0008] Furthermore, the first ideal diode circuit includes: a first control circuit and a first switch circuit; The input end of the first control circuit is connected to the controller, and the output end of the first control circuit is connected to the first end of the first switch circuit; The second end of the first switch circuit is suitable for connecting to the jumper power supply, the third end of the first switch circuit is connected to the voltage conversion circuit, and the first control circuit is used to drive the first switch circuit to conduct under the action of the first level signal.

[0009] Furthermore, the first switch circuit includes: a first back-to-back NMOS, which is composed of a plurality of NMOS tubes connected in parallel.

[0010] Furthermore, the first back-to-back NMOS includes: A first NMOS tube and a second NMOS tube, the gate of the first NMOS tube and the gate of the second NMOS tube are connected to the output end of the first control circuit, the source of the first NMOS tube and the source of the second NMOS tube are connected, the drain of the first NMOS tube is suitable for connecting to the jumper power supply, and the drain of the second NMOS tube is suitable for connecting to the second end of the voltage conversion circuit.

[0011] Furthermore, the second jumper branch includes: a second ideal diode circuit; The first end of the second ideal diode circuit is connected to the controller, the second end of the second ideal diode circuit is suitable for connecting to the jumper power supply, the third end of the second ideal diode circuit is suitable for connecting to the power-deficient device, and the second ideal diode circuit is used to be turned on when driven by a second level signal.

[0012] Furthermore, the second ideal diode circuit includes: a second control circuit and a second switch circuit; An input end of the second control circuit is connected to the controller, and an output end of the second control circuit is connected to the first end of the second switch circuit; The second end of the second switch circuit is suitable for connecting to the jumper power supply, the third end of the second switch circuit is suitable for connecting to the power-deficient device, and the second control circuit is used to drive the second switch circuit to conduct under the action of the second level signal.

[0013] Furthermore, the second switch circuit includes: a second back-to-back NMOS, which is composed of a plurality of NMOS tubes connected in parallel.

[0014] Furthermore, the second back-to-back NMOS includes: A third NMOS tube and a fourth NMOS tube, the gate of the third NMOS tube and the gate of the fourth NMOS tube are connected to the output end of the first control circuit, the source of the third NMOS tube and the source of the fourth NMOS tube are connected, the drain of the third NMOS tube is suitable for connecting to the jumper power supply, and the drain of the fourth NMOS tube is suitable for connecting to the power-deficient device.

[0015] Furthermore, the second jumper branch further includes: a first resistor, wherein a first end of the first resistor is adapted to be connected to the jumper power source, and a second end of the first resistor is connected to a second end of the second switch circuit; The first resistor is used for overcurrent protection.

[0016] Furthermore, the controller includes a comparator and a NOT gate; The input end of the comparator is connected to the jumper power supply, the first output end of the comparator is connected to the first jumper branch through the NOT gate, and the second output end of the comparator is connected to the second jumper branch; The comparator is used to output the second level signal when the voltage of the jumper power supply is within a first preset range, and the NOT gate is used to convert the second level signal into the first level signal.

[0017] Further, the first level signal is a high level signal, and the second level signal is a low level signal; or The first level signal is a low level signal, and the second level signal is a high level signal.

[0018] Furthermore, a bidirectional ESD tube is provided at the positive input end of the jumper control device for electrostatic protection of the input voltage; the positive input end is the connection end between the first jumper branch and / or the second jumper branch and the jumper power supply.

[0019] Furthermore, a first capacitor is provided at the positive input terminal of the jumper control device for filtering the input voltage.

[0020] Furthermore, the jumper control device also includes an auxiliary power supply, which is connected to the controller and / or the voltage conversion circuit, and is used to power the control IC of the controller and / or the voltage conversion circuit.

[0021] Furthermore, an inductor and a second capacitor are provided between the jumper power supply and the auxiliary power supply.

[0022] Furthermore, the controller collects the voltage of the jumper power supply from the rear end of the second capacitor.

[0023] Furthermore, a diode is connected in series at the front end of the inductor to protect the positive and negative poles of the input from being connected in reverse.

[0024] Furthermore, the first preset range is a starting voltage smaller than that of the power-deficient device, and the second preset range is a voltage range in which the power-deficient device can start normally.

[0025] According to a second aspect of the present invention, there is provided a jumper system, comprising: a jumper power supply; The jumper control device according to the first aspect of the present invention; The jump-start power supply jump-starts the power-deficient device through the jump-start control device, so that the power-deficient device is started.

[0026] According to a third aspect of the present invention, a vehicle is provided, comprising the jump-starting control device according to the first aspect of the present invention, or comprising the jump-starting system according to the second aspect of the present invention.

[0027] Furthermore, a domain controller is included, and the domain controller can accept the jump-start control device or the jump-start system to start the vehicle.

[0028] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0030] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0031] Figure 1 This is a circuit diagram of a jumper control device of the present invention; Figure 2This is a schematic diagram of the connection between a jumper system and a power-deficient device according to the present invention; Figure 3 This is a working flow chart of a jumper control device of the present invention.

[0032] Description of reference numerals: 100. Jumper power supply; 200. Jumper control device; 300. Power-off equipment; 211, positive input of the jumper control device; 212, negative input of the jumper control device; 213, positive output of the jumper control device; 221, first control circuit; 222, second control circuit; 230, controller; 231, comparator; 232, NOT gate; 250, auxiliary power supply; 260, voltage conversion circuit; 270, first jumper branch; 271, first ideal diode circuit; 280, second jumper branch; 281, second ideal diode circuit; 291, first switch circuit; 292, second switch circuit; D1, bidirectional ESD transistor; C1, first capacitor; D2, diode; L1, inductor; C2, second capacitor; Q1, first NMOS transistor; Q2, second NMOS transistor; Q3, third NMOS transistor; Q4, fourth NMOS transistor; R1, first resistor; 311. Positive input terminal of the power-deficient equipment; 312. Negative input terminal of the power-deficient equipment. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0034] like Figure 1 and Figure 2 As shown, a jumper control device 200 is provided, comprising: The first jumper branch 270 includes a voltage conversion circuit 260. The first jumper branch 270 is adapted to connect the power-deficient device 300 and the jumper power supply 100, and is configured to be turned on when driven by a first level signal; The second jumper branch 280 is adapted to connect the power-deficient device 300 and the jumper power supply 100 and is configured to be turned on when driven by a second level signal.

[0035] Through the above method, a defective device can be jump-started with a jump-start power supply whose voltage is lower than the starting voltage of the defective device, or with a jump-start power supply whose voltage is the same as the starting voltage of the defective device. This solves the problem that the existing 24V jump-start power supply and the 48V jump-start power supply that may appear in the future cannot be used for emergency jump-starting defective devices equipped with a 48V low-voltage system architecture.

[0036] In some embodiments, the jump-start control device 200 also includes a controller 230, which is respectively connected to the jump-start power supply 100, the first jump-start branch 270 and the second jump-start branch 280, and the controller 230 is used to output a first level signal when the voltage of the jump-start power supply 100 is within a first preset range, and output a second level signal when the voltage of the jump-start power supply 100 is within a second preset range.

[0037] In some embodiments, the first jumper branch includes: a first ideal diode circuit 271 and the voltage conversion circuit 260; A first end of the first ideal diode circuit 271 is connected to the controller 230, a second end of the first ideal diode circuit 271 is adapted to be connected to the jumper power supply 100, and a third end of the first ideal diode circuit 271 is connected to the second end of the voltage conversion circuit 260. The first ideal diode circuit 271 is configured to be turned on when driven by a first level signal. A first end of the voltage conversion circuit 260 is connected to the controller 230 , and a third end of the voltage conversion circuit 260 is suitable for connecting to the power-deficient device 300 . The voltage conversion circuit 260 is used to boost or buck the voltage output by the first ideal diode circuit 271 .

[0038] In some embodiments, the first ideal diode 271 circuit includes: a first control circuit 221 and a first switch circuit 291; The input end of the first control circuit 221 is connected to the controller 230 , and the output end of the first control circuit 221 is connected to the first end of the first switch circuit 291 ; The second end of the first switch circuit 291 is suitable for connecting to the jumper power supply 100, the third end of the first switch circuit 291 is connected to the voltage conversion circuit 260, and the first control circuit 221 is used to drive the first switch circuit 291 to turn on under the action of the first level signal.

[0039] In some embodiments, the first switch circuit includes: a first back-to-back NMOS, wherein the first back-to-back NMOS is composed of a plurality of NMOS tubes connected in parallel.

[0040] In some embodiments, the first back-to-back NMOS comprises: A first NMOS transistor Q1 and a second NMOS transistor Q2 have their gates connected to the output terminal of the first control circuit 221, their sources connected to the source of the first NMOS transistor Q1 and the source of the second NMOS transistor Q2, their drain connected to the second terminal of the voltage conversion circuit 260, and their drain connected to the second terminal of the voltage conversion circuit 260. Using back-to-back NMOS transistors can achieve bidirectional input and output anti-reverse functions.

[0041] In some embodiments, the first back-to-back NMOS is composed of several NMOS connected in parallel to increase the current capacity.

[0042] In some embodiments, the second jumper branch 280 includes: a second ideal diode circuit 281; The first end of the second ideal diode circuit 281 is connected to the controller 230, the second end of the second ideal diode circuit 281 is suitable for connecting to the jumper power supply 100, the third end of the second ideal diode circuit 281 is suitable for connecting to the power-deficient device 300, and the second ideal diode circuit 281 is used to be turned on when driven by a second level signal.

[0043] In some embodiments, the second ideal diode 281 circuit includes: a second control circuit 222 and a second switch circuit 292; An input end of the second control circuit 222 is connected to the controller 230 , and an output end of the second control circuit 222 is connected to a first end of the second switch circuit 292 ; The second end of the second switch circuit 292 is suitable for connecting to the jumper power supply 100, and the third end of the second switch circuit 292 is suitable for connecting to the low-power device 300. The second control circuit 222 is used to drive the second switch circuit 292 to turn on under the action of the second level signal.

[0044] In some embodiments, the second switch circuit 292 includes: a second back-to-back NMOS, wherein the second back-to-back NMOS is composed of a plurality of NMOS transistors connected in parallel.

[0045] In some embodiments, the second back-to-back NMOS comprises: The third NMOS transistor Q3 and the fourth NMOS transistor Q4 have their gates connected to the output of the first control circuit 221, their sources connected to the sources of the fourth NMOS transistor, their drains connected to the jumper power supply, and their drains connected to the low-power device. Back-to-back NMOS transistors can achieve bidirectional anti-reverse function for both input and output.

[0046] In some embodiments, the second back-to-back NMOS is composed of several NMOS connected in parallel to increase the current capacity.

[0047] In some embodiments, the second jumper branch 280 further includes: a first resistor R1, a first end of the first resistor R1 is suitable for connecting to the jumper power supply 100, and a second end of the first resistor R1 is connected to the second end of the second switch circuit 292; the first resistor is used for overcurrent protection.

[0048] In some embodiments, both ends of the first resistor R1 are further connected to the control IC of the second control circuit 222. The control IC of the second control circuit 222 can be a TPS4800. When the control IC of the second control circuit 222 detects an overcurrent in the second jumper branch 280 through the first resistor RI, overcurrent protection can be performed.

[0049] In some embodiments, the controller includes a comparator 231 and a NOT gate 232; The input end of the comparator 231 is connected to the jumper power supply 100 , the first output end of the comparator 231 is connected to the first jumper branch 270 via the NOT gate 232 , and the second output end of the comparator 231 is connected to the second jumper branch 280 ; The comparator 231 is used to output the second level signal when the voltage of the jump power supply 100 is within a first preset range, and the NOT gate 232 is used to convert the second level signal into the first level signal.

[0050] In some embodiments, the first level signal is a high level signal, and the second level signal is a low level signal; or The first level signal is a low level signal, and the second level signal is a high level signal.

[0051] In some embodiments, a bidirectional ESD tube D1 is provided at the positive input terminal 211 of the jumper control device for electrostatic protection of the input voltage; the positive input terminal 211 is the connection terminal between the first jumper branch 270 and / or the second jumper branch 280 and the jumper power supply 100.

[0052] In some embodiments, a first capacitor C1 is further provided at the positive input terminal 211 of the jumper control device 200 for filtering the input voltage.

[0053] In some embodiments, the jumper control device 200 also includes an auxiliary power supply 250, which is connected to the controller 230 and / or the voltage conversion circuit 260, and the auxiliary power supply 250 is used to power the control IC of the controller 230 and / or the voltage conversion circuit 260.

[0054] In some embodiments, the comparator 231 and the NOT gate 232 are powered by 5V, while the control IC of the voltage conversion circuit 260 is powered by 10V. The auxiliary power supply 250 first steps down the voltage to 5V to power the comparator 231 and the NOT gate 232, and then steps up the voltage to 10V to power the control IC of the voltage conversion circuit 260. This step-down-then-step-up approach can improve stability.

[0055] In some embodiments, the voltage conversion circuit 260 uses a dual-output boost circuit, and the control IC of the voltage conversion circuit 260 uses LM5171, which can adjust the output voltage in real time and implement input overcurrent, overvoltage and undervoltage protection.

[0056] In some embodiments, an inductor L1 and a second capacitor C2 are provided between the jumper power supply 100 and the auxiliary power supply 250 .

[0057] In some embodiments, the controller 230 collects the voltage of the jump power supply 100 from the rear end of the second capacitor C2. This allows the auxiliary power supply 250 to share the inductor L1 and the second capacitor C2 for filtering, thereby reducing circuit complexity and improving component utilization.

[0058] In some embodiments, a diode D2 is connected in series to the front end of the inductor L1 to protect the positive and negative input terminals from being connected in reverse.

[0059] In some embodiments, the first preset range of the voltage of the jump power supply 100 is smaller than the starting voltage of the low-power device 300 , and the second preset range of the voltage of the jump power supply 100 is the voltage range in which the low-power device 300 can start normally.

[0060] In some embodiments, the jumper control device 200 is provided with an enable pull-down resistor, and when powered on, the first control circuit 221, the second control circuit 222 and the voltage conversion circuit 260 are turned off by default through the enable pull-down resistor.

[0061] In conjunction with specific embodiments, Figure 3As shown, the working process of a jumper control device of the present invention is described in detail.

[0062] S00, Start S01, the jumper control device 200 is connected to the jumper power supply 100; S02, determine whether the input voltage is reversed, if so, go to step S03; if not, go to step S04; S03. If the input voltage is reversed, the diode D2 is used to block the voltage from passing through, thereby closing the output channel; and returning to step S02; S04, setting the pull-down resistor to the pull-down closed state by default, thereby powering on and closing the first control circuit 221, the second control circuit 222, and the voltage conversion circuit 260 by default; S05, determining whether the input voltage is greater than the upper threshold of the 24V jump power supply. If the input voltage is greater than the upper threshold of the 24V jump power supply, proceed to step S06; if the input voltage is less than the upper threshold of the 24V jump power supply, proceed to step S12; S06, determining whether the input voltage is greater than the upper threshold of the 48V jump power supply. If the input voltage is greater than the upper threshold of the 48V jump power supply, proceed to step S07; if the input voltage is less than the upper threshold of the 48V jump power supply, proceed to step S08; S07, triggering the overvoltage protection, turning off the second control circuit 222, and returning to step S06; S08, turning on the second control circuit 222; S09, determining whether the input current is greater than the overcurrent protection threshold. If the input current is greater than the overcurrent protection threshold, proceed to step S10; if the input current is less than the overcurrent protection threshold, proceed to step S11; S10, triggering overcurrent protection, turning off the second control circuit 222, and returning to step S09; S11, the second control circuit 222 turns on the output normally, and the process goes to step S18; S12, determining whether the input voltage is less than the lower limit threshold of the 12V jump power supply. If the input voltage is less than the lower limit threshold of the 12V jump power supply, proceed to step S13; if the input voltage is greater than the lower limit threshold of the 12V jump power supply, proceed to step S14; S13, triggering undervoltage protection, turning off the first control circuit 221, and returning to step S12; S14, turning on the first control circuit 221 and the voltage conversion circuit 260; S15, determine whether the input current is greater than the overcurrent protection threshold. If the input current is greater than the overcurrent protection threshold, proceed to step S16; if the input current is less than the overcurrent protection threshold, proceed to step S17; S16, triggering overcurrent protection, turning off the voltage conversion circuit 260, and returning to step S15; S17: The first control circuit 221 and the voltage conversion circuit 260 turn on the output normally, and the process goes to step S18; S18, output grounding voltage; S19, end.

[0063] Since the output voltage of the jump-start power supply 100 fluctuates within a certain range rather than being a constant value, for example, the output voltage of some 12V jump-start power supplies is 9V-16V. Therefore, the output voltage of the jump-start power supply 100, i.e., the input voltage of the jump-start control device 200, has a lower threshold and an upper threshold.

[0064] Through the above method, a defective device can be jump-started with a jump-start power supply whose voltage is lower than the starting voltage of the defective device, or with a jump-start power supply whose voltage is the same as the starting voltage of the defective device. This solves the problem that the existing 24V jump-start power supply and the 48V jump-start power supply that may appear in the future are not suitable for emergency jump-starting defective devices equipped with a 48V low-voltage system architecture.

[0065] According to the second aspect of the present invention, Figure 2 A jumper system is provided, comprising: 100 jumper power supply; The jumper control device 200 according to the first aspect of the present invention; The jump-start power supply 100 jump-starts the power-deficient device 300 through the jump-start control device, so that the power-deficient device 300 starts up.

[0066] According to a third aspect of the present invention, a vehicle is provided, comprising the jump-starting control device 200 as described in the first aspect of the present invention, or comprising the jump-starting system as described in the second aspect of the present invention.

[0067] Furthermore, a domain controller is included, and the domain controller can accept the jump-start control device 200 or the jump-start system to start the vehicle.

[0068] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0069] Those skilled in the art will appreciate that embodiments of the present invention may be provided as methods, apparatus, or computer program products. Thus, embodiments of the present invention may take the form of a fully hardware embodiment, a fully software embodiment, or an embodiment combining software and hardware. Furthermore, embodiments of the present invention may take the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) containing computer-usable program code.

[0070] The embodiments of the present invention are described with reference to the flowcharts and / or block diagrams of the methods, computer-readable storage media, and computer program products according to the embodiments of the present invention. It should be understood that each process and / or block in the flowcharts and / or block diagrams, as well as the combination of processes and / or blocks in the flowcharts and / or block diagrams, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing terminal device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing terminal device generate instructions for implementing the processes in the flowcharts and / or block diagrams. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0071] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing terminal device to operate in a specific manner, so that the instructions stored in the computer readable memory produce a manufactured product including an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0072] These computer program instructions can also be loaded onto a computer or other programmable data processing terminal device so that a series of operating steps are executed on the computer or other programmable terminal device to produce a computer-implemented process, thereby providing instructions for executing on the computer or other programmable terminal device to implement the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0073] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0074] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0075] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0076] The above are only preferred embodiments of the present application and do not constitute any form of limitation to the present application. In the embodiments of the present application, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, please refer to the relevant content of other embodiments. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

[0077] The above is a detailed introduction to a jumper control device provided by the present invention. Specific examples are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. At the same time, for those skilled in the art, according to the ideas of the present invention, there may be changes in the specific implementation methods and application scopes. In summary, the contents of this specification should not be understood as limiting the present invention.

Claims

1. A jumper control device, characterized in that: include: A first jumper branch, comprising a voltage conversion circuit, wherein the first jumper branch is adapted to connect a power-deficient device and a jumper power supply, and is configured to be turned on when driven by a first level signal; The second jumper branch is adapted to connect the power-deficient device and the jumper power supply, and is configured to be turned on when driven by a second level signal.

2. The jumper control device according to claim 1, characterized in that: It also includes a controller, which is respectively connected to the jumper power supply, the first jumper branch and the second jumper branch. The controller is used to output the first level signal when the voltage of the jumper power supply is within a first preset range, and output the second level signal when the voltage of the jumper power supply is within a second preset range.

3. The jumper control device according to claim 2, characterized in that: The first jumper branch includes: a first ideal diode circuit and the voltage conversion circuit; A first end of the first ideal diode circuit is connected to the controller, a second end of the first ideal diode circuit is adapted to be connected to the jumper power supply, a third end of the first ideal diode circuit is connected to the second end of the voltage conversion circuit, and the first ideal diode circuit is configured to be turned on when driven by a first level signal; The first end of the voltage conversion circuit is connected to the controller, the third end of the voltage conversion circuit is suitable for connecting to the power-deficient device, and the voltage conversion circuit is used to boost or buck the voltage output by the first ideal diode circuit.

4. The jumper control device according to claim 3, characterized in that: The first ideal diode circuit includes: a first control circuit and a first switch circuit; The input end of the first control circuit is connected to the controller, and the output end of the first control circuit is connected to the first end of the first switch circuit; The second end of the first switch circuit is suitable for connecting to the jumper power supply, the third end of the first switch circuit is connected to the voltage conversion circuit, and the first control circuit is used to drive the first switch circuit to conduct under the action of the first level signal.

5. The jumper control device according to claim 4, characterized in that: The first switch circuit includes: a first back-to-back NMOS, which is composed of a plurality of NMOS tubes connected in parallel.

6. The jumper control device according to claim 5, characterized in that: The first back-to-back NMOS comprises: A first NMOS tube and a second NMOS tube, the gate of the first NMOS tube and the gate of the second NMOS tube are connected to the output end of the first control circuit, the source of the first NMOS tube and the source of the second NMOS tube are connected, the drain of the first NMOS tube is suitable for connecting to the jumper power supply, and the drain of the second NMOS tube is suitable for connecting to the second end of the voltage conversion circuit.

7. The jumper control device according to claim 2, characterized in that: The second bridge branch includes: a second ideal diode circuit; The first end of the second ideal diode circuit is connected to the controller, the second end of the second ideal diode circuit is suitable for connecting to the jumper power supply, the third end of the second ideal diode circuit is suitable for connecting to the power-deficient device, and the second ideal diode circuit is used to be turned on when driven by a second level signal.

8. The jumper control device according to claim 7, characterized in that: The second ideal diode circuit includes: a second control circuit and a second switch circuit; An input end of the second control circuit is connected to the controller, and an output end of the second control circuit is connected to the first end of the second switch circuit; The second end of the second switch circuit is suitable for connecting to the jumper power supply, the third end of the second switch circuit is suitable for connecting to the power-deficient device, and the second control circuit is used to drive the second switch circuit to conduct under the action of the second level signal.

9. The jumper control device according to claim 8, characterized in that: The second switch circuit includes: a second back-to-back NMOS, which is composed of a plurality of NMOS tubes connected in parallel.

10. The jump start control device according to claim 9, characterized in that: The second back-to-back NMOS includes: A third NMOS tube and a fourth NMOS tube, the gate of the third NMOS tube and the gate of the fourth NMOS tube are connected to the output end of the first control circuit, the source of the third NMOS tube and the source of the fourth NMOS tube are connected, the drain of the third NMOS tube is suitable for connecting to the jumper power supply, and the drain of the fourth NMOS tube is suitable for connecting to the power-deficient device.

11. The jump start control device according to claim 8, characterized in that: The second jumper branch further includes: a first resistor, a first end of the first resistor being adapted to be connected to the jumper power source, and a second end of the first resistor being connected to a second end of the second switch circuit; The first resistor is used for overcurrent protection.

12. The jump-start control device according to any one of claims 2 to 11, characterized in that: The controller includes a comparator and a NOT gate; The input end of the comparator is connected to the jumper power supply, the first output end of the comparator is connected to the first jumper branch through the NOT gate, and the second output end of the comparator is connected to the second jumper branch; The comparator is used to output the second level signal when the voltage of the jumper power supply is within a first preset range, and the NOT gate is used to convert the second level signal into the first level signal.

13. The jump start control device according to claim 12, characterized in that: The first level signal is a high level signal, and the second level signal is a low level signal; or The first level signal is a low level signal, and the second level signal is a high level signal.

14. The jump start control device according to claim 1, characterized in that: A bidirectional ESD tube is provided at the positive input end of the jumper control device for electrostatic protection of the input voltage; the positive input end is the connection end between the first jumper branch and / or the second jumper branch and the jumper power supply.

15. The jump start control device according to claim 14, characterized in that: A first capacitor is further provided at the positive input terminal of the jumper control device for filtering the input voltage.

16. The jump start control device according to claim 2, characterized in that: The jumper control device further includes an auxiliary power supply, which is connected to the controller and / or the voltage conversion circuit, and is used to supply power to the control IC of the controller and / or the voltage conversion circuit.

17. The jumper control device according to claim 16, characterized in that: An inductor and a second capacitor are provided between the jumper power supply and the auxiliary power supply.

18. The jump start control device according to claim 17, characterized in that: The controller collects the voltage of the jumper power supply from the rear end of the second capacitor.

19. The jump start control device according to claim 15, characterized in that: A diode is connected in series at the front end of the inductor to protect the positive and negative input electrodes from being connected in reverse.

20. The jumper control device according to claim 1, characterized in that: The first preset range is smaller than the starting voltage of the power-deficient device, and the second preset range is the voltage range in which the power-deficient device can start normally.

21. A bridging system comprising: Jumper power supply; The jumper control device according to any one of claims 1 to 20; The jump-start power supply jump-starts the power-deficient device through the jump-start control device, so that the power-deficient device is started.

22. A vehicle, characterized in that: It comprises the jump-starting control device according to any one of claims 1 to 20, or the jump-starting system according to claim 21.

23. The vehicle according to claim 22, characterized in that The vehicle is further comprised of a domain controller, which can accept a jump start from the jump start control device or the jump start system to start the vehicle.

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