Power supply control circuit and vehicle
By using a first conversion component and a second conversion component in the vehicle to convert high voltage to low voltage, the safety hazards and high cost problems caused by high-voltage lithium batteries are solved, and low-cost and safe power supply control is achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NINE INTELLIGENT CHANGZHOU TECH CO LTD
- Filing Date
- 2025-04-24
- Publication Date
- 2026-07-21
Smart Images
Figure CN224537796U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vehicle control, in particular to a power supply control circuit and a vehicle. BACKGROUND
[0002] Generally, the power supply mode of various functional components on the vehicle body of a vehicle mainly powered by electricity depends on high-voltage lithium batteries, which makes the power system of the vehicle efficient and has good endurance. However, the voltage of the high-voltage lithium battery is generally higher than the human body safety voltage, which brings potential safety hazards to the human body and the vehicle.
[0003] To solve the safety hazards brought by high-voltage power supply, most of the functional components of the vehicles on the market need to be equipped with special high-voltage power conversion chips to step down the voltage output by the high-voltage lithium battery, thereby reducing the safety risk. However, the manufacturing cost of the high-voltage power conversion chip is high, which will make the vehicle face high cost pressure, and if the high-voltage power conversion chip is not used, the vehicle will face high safety hazard pressure. How to reduce the cost of the vehicle while ensuring the safety of the vehicle has become a problem to be solved. CONTENT OF THE INVENTION
[0004] The embodiments of the present application provide a power supply control circuit and a vehicle to reduce the cost of the vehicle and ensure the safety of the vehicle.
[0005] In a first aspect, the embodiments of the present application provide a power supply control circuit, comprising a first conversion component, a second conversion component, a processing component, at least one first functional component and at least two second functional components:
[0006] The input end of the first conversion component is connected to a power supply, the output end of the first conversion component is connected to the first functional component and the first input end of the processing component, and the first conversion component is used to step down the voltage provided by the power supply and output to the first functional component and the processing component.
[0007] The first input end of the second conversion component is connected to the power supply, the output end of the second conversion component is connected to the second functional component, the second input end of the second conversion component is connected to the first output end of the processing component, and the second conversion component is used to step down the voltage provided by the power supply and output to the second functional component when receiving the first power supply instruction issued by the processing component.
[0008] In a possible implementation, the power supply control circuit further comprises a third conversion component, the input end of the third conversion component is connected to the power supply, the output end of the third conversion component is connected to the first input end of the processing component, and the third conversion component is used to step down the voltage provided by the power supply and output to the processing component.
[0009] In a possible implementation, the power supply control circuit further comprises a fourth conversion component, an input end of the fourth conversion component is connected to an output end of the first conversion component and an output end of the third conversion component respectively, and an output end of the fourth conversion component is connected to a first input end of the processing component;
[0010] The fourth conversion component is configured to monitor the voltage output by the first conversion component and the third conversion component to the processing component, so as to control the processing component to operate at a stable voltage.
[0011] In a possible implementation, the fourth conversion component comprises a first diode, a second diode, a conversion module and a monitoring module.
[0012] The first diode is arranged between the output end of the third conversion component and an input end of the conversion module.
[0013] The second diode is arranged between the output end of the first conversion component and the input end of the conversion module.
[0014] An output end of the conversion module is connected to an input end of the monitoring module.
[0015] The input end of the monitoring module is further connected to a second output end of the processing component, so as to obtain the operating state information of the processing component, and an output end of the monitoring module is connected to the first input end of the processing component.
[0016] The monitoring module is configured to stop outputting voltage to the processing component when the voltage output by the first conversion component and the third conversion component to the processing component is abnormal, and reset the processing component when the operating state information indicates that the processing component operates abnormally.
[0017] In a possible implementation, the conversion module adopts a DC-DC circuit, and the monitoring module adopts an external watchdog monitoring circuit.
[0018] In a possible implementation, an output end of the first conversion component is further connected to a second input end of the processing component, so as to send the first current value output by the first conversion component to the first functional component to the processing component, and an output end of the second conversion component is further connected to the second input end of the processing component, so as to send the second current value output by the second conversion component to the second functional component to the processing component.
[0019] The processing component is configured to generate corresponding prompt information when the first current value reaches a first preset current threshold and / or the second current value reaches a second preset current threshold.
[0020] In one possible implementation, the power supply control circuit further includes a redundant power supply component, the output of which is connected to a first functional component, and the input of which is connected to a first output of the processing component. The redundant power supply component is used to output voltage to the first functional component when it receives a second power supply command from the processing component.
[0021] In one possible implementation, the redundant power supply assembly includes a redundant power supply, a first field-effect transistor, and a third diode;
[0022] The output terminal of the redundant power supply is connected to the drain of the first field-effect transistor;
[0023] The source of the first field-effect transistor is connected to the first functional component in series with the third diode, and the gate of the first field-effect transistor is connected to the first output terminal of the processing component.
[0024] In one possible implementation, the second conversion component includes a voltage control module and a second field-effect transistor;
[0025] The first terminal of the voltage control module is connected to the power supply, the second terminal of the voltage control module is connected to the gate of the second field-effect transistor, and the third terminal of the voltage control module is connected to the drain of the second field-effect transistor.
[0026] The source of the second field-effect transistor is connected to the power supply, and the drain of the second field-effect transistor is connected to the second functional component through a series connection of a first resistor and an inductor.
[0027] Secondly, embodiments of this application provide a vehicle equipped with a power supply control circuit as described in the first aspect and / or various possible implementations of the first aspect.
[0028] The power supply control circuit and vehicle provided in this application embodiment convert the high voltage provided by the power supply to a low voltage by setting a first conversion component and a second conversion component, thereby providing low voltage power supply to each functional component, so that the power supply voltage is within the safe range for the human body, thereby reducing the risk of electric shock to the human body during actual use of the power supply control circuit; and by using the first conversion component and the second conversion component to uniformly step down the high voltage provided by the power supply and distribute it to the functional components, it is possible to avoid configuring a high voltage conversion chip for each functional component separately, thereby reducing the overall cost. Attached Figure Description
[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.
[0030] Figure 1 A schematic diagram of the power supply control circuit provided in this application;
[0031] Figure 2 A schematic diagram of another power supply control circuit provided in this application;
[0032] Figure 3 A schematic diagram of the structure of another power supply control circuit provided in this application;
[0033] Figure 4 A schematic diagram of the structure of the fourth conversion component in the power supply control circuit provided in this application;
[0034] Figure 5 A schematic diagram of another power supply control circuit provided in this application;
[0035] Figure 6 A schematic diagram of the redundant power supply components in the power supply control circuit provided in this application;
[0036] Figure 7 A schematic diagram of the structure of the first conversion component in the power supply control circuit provided in this application;
[0037] Figure 8 This is a structural diagram of the vehicle provided in this application.
[0038] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation
[0039] The following specific examples illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. This application can also be implemented or applied through other different specific embodiments, and various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of this application. It should be noted that, unless otherwise specified, the following embodiments and features in the embodiments can be combined with each other.
[0040] It should be noted that the illustrations provided in the following embodiments are only schematic representations of the basic concept of this application. Therefore, the illustrations only show the components related to this application and are not drawn according to the number, shape and size of the components in actual implementation. In actual implementation, the form, quantity and proportion of each component can be arbitrarily changed, and the layout of the components may also be more complex.
[0041] Some exemplary embodiments of this application have been described for illustrative purposes. It should be understood that this application may be implemented in other ways not specifically shown in the accompanying drawings.
[0042] Please see Figure 1 In one embodiment, this application provides a power supply control circuit 100, including a first conversion component 110, a second conversion component 120, a processing component 130, at least one first functional component 141, and at least two second functional components 142.
[0043] The input terminal of the first conversion component 110 is connected to the power supply, and the output terminal of the first conversion component 110 is connected to the first input terminal of the first functional component 141 and the processing component 130. The first conversion component 110 is used to step down the voltage provided by the power supply and output it to the first functional component 141 and the processing component 130.
[0044] The input terminal of the second conversion component 120 is connected to the power supply, the output terminal of the second conversion component 120 is connected to the second functional component 142, and the control terminal of the second conversion component 120 is connected to the first output terminal of the processing component 130. The second conversion component 120 is used to step down the voltage provided by the power supply and output it to the second functional component 142 when it receives the first power supply command issued by the processing component 130.
[0045] As an example, the first functional component 141 refers to a functional component that requires a continuous power supply, while the second functional component 142 refers to a functional component that requires user triggering to be powered and enabled to function. The function of the second functional component 142 only needs to be implemented when the user requires it.
[0046] It should be noted that this application does not limit the specific circuit structure adopted by the first conversion component 110, as long as the first conversion component 110 can realize the function of stepping down the voltage provided by the power supply.
[0047] When the power supply control circuit 100 is applied to a vehicle, the first functional component 141 may be, for example, an anti-theft alarm, a driving recorder, an electronic key system, etc., to ensure that the vehicle status can be monitored or that specific functions can be implemented even after the vehicle is turned off; the second functional component 142 may be, for example, a light, a motor controller, a metal horn, a reversing radar, an air conditioning system, etc., which will only be powered after the vehicle is started, to ensure that the working status of each functional component can match the operating status of the vehicle.
[0048] Optionally, in order for the vehicle to be woken up and used when the engine is off, the first functional component 141 includes at least an electronic key system; after the vehicle is started, at least two second functional components 142 are generally used, such as lights and motor controllers.
[0049] The power supply can be, for example, a DC power supply. When the power supply control circuit 100 is applied in a vehicle, the power supply can be, for example, a high-voltage battery pack carried on the vehicle.
[0050] As an example, the processing component 130 can be a microcontroller, or a physical button or relay, etc., and transmits the first power supply command by sending high and low levels to control the second conversion component 120 to step down the voltage provided by the power supply and output it to the second functional component 142.
[0051] The aforementioned power supply control circuit, by setting a first conversion component and a second conversion component, converts the high voltage provided by the power supply to a low voltage, thereby providing low-voltage power to each functional component and keeping the power supply voltage within the safe range for the human body. This reduces the risk of electric shock to the user during actual use of the power supply control circuit. Furthermore, by using the first conversion component and the second conversion component to uniformly step down the high voltage provided by the power supply and distribute it to the functional components, it is possible to avoid configuring a separate high-voltage conversion chip for each functional component, thereby reducing the overall cost.
[0052] like Figure 2 As shown, in one embodiment, the power supply control circuit 100 further includes a third conversion component 150. The input terminal of the third conversion component 150 is connected to the power supply, and the output terminal of the third conversion component 150 is connected to the first input terminal of the processing component 130. The third conversion component 150 is used to step down the voltage provided by the power supply and output it to the processing component 130.
[0053] The third conversion component 150 is used to provide redundant backup power to the processing component 130, preventing the processing component 130 from failing to operate due to lack of power when the first conversion component 110 fails.
[0054] It should be noted that this application does not impose any restrictions on the specific circuit structure adopted by the third conversion component 150, as long as the third conversion component 150 can achieve the function of stepping down the voltage provided by the power supply.
[0055] like Figure 3 As shown, in one embodiment, the power supply control circuit 100 further includes a fourth conversion component 160, the input terminal of the fourth conversion component 160 is connected to the output terminal of the first conversion component 110 and the output terminal of the third conversion component 150 respectively, and the output terminal of the fourth conversion component 160 is connected to the first input terminal of the processing component 130.
[0056] The fourth conversion component 160 is used to monitor the voltage output from the first conversion component 110 and the third conversion component 150 to the processing component 130, so as to control the processing component 130 to operate under a stable voltage.
[0057] like Figure 4 As shown, in one embodiment, the fourth conversion component 160 includes a first diode D1, a second diode D2, a conversion module 161, and a monitoring module 162;
[0058] The first diode D1 is disposed between the output terminal of the third conversion component 150 and the input terminal of the conversion module 161;
[0059] The second diode D2 is disposed between the output terminal of the first conversion component 110 and the input terminal of the conversion module 161;
[0060] The output of the conversion module 161 is connected to the input of the monitoring module 162;
[0061] The input terminal of the monitoring module 162 is also connected to the second output terminal of the processing component 130 to obtain the operating status information of the processing component 130. The output terminal of the monitoring module 162 is connected to the first input terminal of the processing component 130.
[0062] The monitoring module 162 is used to stop outputting voltage to the processing component 130 when the voltage output from the first conversion component 110 and the third conversion component 150 to the processing component 130 is abnormal, and to reset the processing component 130 when the operating status information indicates that the processing component 130 is operating abnormally.
[0063] The positive terminal of the first diode D1 is connected to the output terminal of the third conversion component 150, and the negative terminal of the first diode D1 is connected to the input terminal of the conversion module 161.
[0064] The positive terminal of the second diode D2 is connected to the output terminal of the first conversion component 110, and the negative terminal of the second diode D2 is connected to the input terminal of the conversion module 161.
[0065] As an example, the conversion module 161 may be a DC-DC circuit; the monitoring module 162 may be an external watchdog monitoring circuit.
[0066] In one embodiment, the output terminal of the first conversion component 110 is also connected to the second input terminal of the processing component 130, so as to send the first current value output by the first conversion component 110 to the first functional component 141 to the processing component 130; the output terminal of the second conversion component 120 is also connected to the second input terminal of the processing component 130, so as to send the second current value output by the second conversion component 120 to the second functional component 142 to the processing component 130.
[0067] The processing component 130 is used to generate corresponding prompt information when the first current value reaches the first preset current threshold and / or the second current value reaches the second preset current threshold.
[0068] As an example, the prompt message generated by processing component 130 can be sent to a terminal or server that is pre-connected to processing component 130 to alert the user of a circuit failure. The terminal can be, but is not limited to, various personal computers, laptops, smartphones, tablets, and portable wearable devices. Portable wearable devices can be smartwatches, smart bracelets, head-mounted devices, etc. The server can be a standalone server or a server cluster consisting of multiple servers. The user can interact with processing component 130 through the aforementioned terminal or server.
[0069] By monitoring the first current value output from the first conversion component 110 to the first functional component 141 and the second current value output from the second conversion component 120 to the second functional component 142, the processing component 130 can promptly detect abnormal situations. For example, if the first current value exceeds the first preset current threshold or the second current value exceeds the second preset current threshold, the processing component 130 can also immediately implement a protection mechanism, such as cutting off the power supply, to prevent the electrical components and corresponding functional components in the first conversion component 110 and the second conversion component 120 from being damaged due to overcurrent.
[0070] As an example, processing component 130 may also communicate with other processing components for data interaction.
[0071] like Figure 5 As shown, in one embodiment, the power supply control circuit 100 further includes a redundant power supply component 170. The output terminal of the redundant power supply component 170 is connected to the first functional component 141, and the input terminal of the redundant power supply component 170 is connected to the first output terminal of the processing component 130. The redundant power supply component 170 is used to output voltage to the first functional component 141 when it receives a second power supply command issued by the processing component 130.
[0072] like Figure 6 As shown, in one embodiment, the redundant power supply component 170 includes a redundant power supply ACC_0, a first field-effect transistor Q1, and a third diode D3;
[0073] The output of the redundant power supply ACC_0 is connected to the drain of the first field-effect transistor Q1;
[0074] The source of the first field-effect transistor Q1 is connected to the first functional component 141 via a third diode D3 in series, and the gate of the first field-effect transistor Q1 is connected to the first output terminal of the processing component 130.
[0075] The positive terminal of the third diode D3 is connected to the source of the first field-effect transistor Q1, and the negative terminal of the third diode D3 is connected to the first functional component 141.
[0076] like Figure 7 As shown, in one embodiment, the second conversion component 120 includes a voltage control module U1 and a second field-effect transistor Q2;
[0077] The first terminal HV of the voltage control module U1 is connected to the power supply, the second terminal GATE of the voltage control module U1 is connected to the gate of the second field-effect transistor Q2, and the third terminal CS of the voltage control module U1 is connected to the drain of the second field-effect transistor Q2.
[0078] The source of the second field-effect transistor Q2 is connected to the power supply, and the drain of the second field-effect transistor Q2 is connected to the second functional component 142 through a series connection of the first resistor R1 and the inductor L1.
[0079] As an example, the fourth terminal VDD of the voltage control module U1 is connected between the first resistor R1 and the inductor L1 via a series connection of the first capacitor C1; the fifth terminal FB of the voltage control module U1 is connected between the first resistor R1 and the inductor L1 via a series connection of the second resistor R2; the fifth terminal FB of the voltage control module U1 is also connected between the inductor L1 and the second functional component 142 via a series connection of the third resistor R3; the sixth terminal GND of the voltage control module U1 is connected between the first resistor R1 and the inductor L1; the seventh port of the voltage control module U1...
[0080] The second conversion component 120 also includes a fourth diode D4, a second capacitor C2, a third capacitor C3, a fourth capacitor C4, a fifth capacitor C5, and a fourth resistor R4. One end of the fourth diode D4 is connected between the first resistor R1 and the inductor L1, and the other end of the fourth diode D4 is grounded. One end of the second capacitor C2 is connected to the power supply, and the other end of the second capacitor C2 is grounded. One end of the third capacitor C3 is connected to the power supply, and the other end of the third capacitor C3 is grounded. One end of the fourth capacitor C4 is connected to the second functional component 142, and the other end of the fourth capacitor C4 is grounded. One end of the fifth capacitor C5 is connected to the second functional component 142, and the other end of the fifth capacitor C5 is grounded. One end of the fourth resistor R4 is connected to the second functional component 142, and the other end of the fourth resistor R4 is grounded.
[0081] The positive terminal of the fourth diode D4 is grounded, and the negative terminal of the fourth diode D4 is connected between the first resistor R1 and the inductor L1.
[0082] like Figure 8 As shown, this application embodiment also provides a vehicle 800, which is equipped with the button control circuit 100 of any of the above embodiments.
[0083] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.
[0084] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.
[0085] In addition, the functional units in the various embodiments of this application can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.
[0086] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as a USB flash drive, a portable hard drive, a read-only memory (ROM), a random access memory (RAM), a magnetic disk, or an optical disk.
[0087] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.
[0088] Finally, it should be noted that other embodiments of this application will readily conceive of by those skilled in the art upon consideration of the specification and practice of the utility model disclosed herein. This application is intended to cover any variations, uses, or adaptations of this application that follow the general principles of this application and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and alterations may be made without departing from its scope. The scope of this application is limited only by the appended claims.
Claims
1. A power supply control circuit, characterized in that, It includes a first conversion component, a second conversion component, a processing component, at least one first functional component, and at least two second functional components: The input terminal of the first conversion component is connected to the power supply, and the output terminal of the first conversion component is connected to the first input terminal of the first functional component and the processing component. The first conversion component is used to step down the voltage provided by the power supply and output it to the first functional component and the processing component. The first input terminal of the second conversion component is connected to the power supply, the output terminal of the second conversion component is connected to the second functional component, and the second input terminal of the second conversion component is connected to the first output terminal of the processing component. The second conversion component is used to step down the voltage provided by the power supply and output it to the second functional component when it receives the first power supply command issued by the processing component. The power supply control circuit further includes a redundant power supply component. The output terminal of the redundant power supply component is connected to the first functional component, and the input terminal of the redundant power supply component is connected to the first output terminal of the processing component. The redundant power supply component is used to output voltage to the first functional component when it receives a second power supply command issued by the processing component. The redundant power supply component includes a redundant power supply, a first field-effect transistor, and a third diode; The output terminal of the redundant power supply is connected to the drain of the first field-effect transistor; The source of the first field-effect transistor is connected to the first functional component in series with the third diode, and the gate of the first field-effect transistor is connected to the first output terminal of the processing component.
2. The power supply control circuit according to claim 1, characterized in that, The power supply control circuit further includes a third conversion component. The input terminal of the third conversion component is connected to the power supply, and the output terminal of the third conversion component is connected to the first input terminal of the processing component. The third conversion component is used to step down the voltage provided by the power supply and output it to the processing component.
3. The power supply control circuit according to claim 2, characterized in that, The power supply control circuit further includes a fourth conversion component, the input terminal of which is connected to the output terminal of the first conversion component and the output terminal of the third conversion component, respectively, and the output terminal of the fourth conversion component is connected to the first input terminal of the processing component; The fourth conversion component is used to monitor the voltage output to the processing component from the first conversion component and the third conversion component, so as to control the processing component to operate under a stable voltage.
4. The power supply control circuit according to claim 3, characterized in that, The fourth conversion component includes a first diode, a second diode, a conversion module, and a monitoring module; The first diode is disposed between the output terminal of the third conversion component and the input terminal of the conversion module; The second diode is disposed between the output terminal of the first conversion component and the input terminal of the conversion module; The output of the conversion module is connected to the input of the monitoring module; The input terminal of the monitoring module is also connected to the second output terminal of the processing component to obtain the operating status information of the processing component, and the output terminal of the monitoring module is connected to the first input terminal of the processing component. The monitoring module is used to stop outputting voltage to the processing component when the voltage output from the first conversion component or the third conversion component to the processing component is abnormal, and to reset the processing component when the operating status information indicates that the processing component is operating abnormally.
5. The power supply control circuit according to claim 4, characterized in that, The conversion module uses a DC-DC circuit; the monitoring module uses an external watchdog monitoring circuit.
6. The power supply control circuit according to any one of claims 1-5, characterized in that, The output terminal of the first conversion component is also connected to the second input terminal of the processing component, for sending the first current value output by the first conversion component to the first functional component to the processing component; the output terminal of the second conversion component is also connected to the second input terminal of the processing component, for sending the second current value output by the second conversion component to the second functional component to the processing component. The processing component is used to generate corresponding prompt information when the first current value reaches a first preset current threshold and / or the second current value reaches a second preset current threshold.
7. The power supply control circuit according to any one of claims 1-5, characterized in that, The second conversion component includes a voltage control module and a second field-effect transistor; The first terminal of the voltage control module is connected to the power supply, the second terminal of the voltage control module is connected to the gate of the second field-effect transistor, and the third terminal of the voltage control module is connected to the drain of the second field-effect transistor. The source of the second field-effect transistor is connected to the power supply, and the drain of the second field-effect transistor is connected to the second functional component through a series connection of a first resistor and an inductor.
8. A vehicle, characterized in that, It is equipped with a power supply control circuit as described in any one of claims 1-7.