Power grid system for active suspension system and vehicle

Abstract

The invention discloses a power grid system for an active suspension system and a vehicle. The system comprises a power supply system, a voltage-stabilizing energy storage system, a power distribution system and a load system, the power supply system and the voltage-stabilizing energy storage system are connected in parallel; the power supply system is used for generating 48V power supply; the voltage stabilization energy storage system is used for stabilizing 48V power supply; the power distribution system is used for carrying out current distribution on each load interface in the load system; the load system is used for being connected with an electrical component of the active suspension system through a load interface of the load system. According to the invention, a 48V power grid system can be realized through construction, and the energy conversion efficiency is improved, the current in the wire harness is reduced and the loss in the wire harness is reduced under the condition that the normal power requirement of the electrical components of the active suspension system is ensured through a mode of increasing the voltage in a circuit. Mainly used in the technical field of vehicles.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and more specifically to an electrical grid system and vehicle for an active suspension system. Background Technology

[0002] Current vehicle power systems generally use a 12V voltage system, especially the power grid of active suspension systems. However, with the proliferation of onboard electrical components, the 12V voltage system results in a large current during transmission. This large current easily leads to significant transmission losses and reduced energy conversion efficiency. Furthermore, the large current also requires a larger wiring harness cross-sectional area, which undoubtedly increases the weight of the wiring harness and thus the overall vehicle weight. Therefore, how to improve the energy conversion efficiency of active suspension systems, reduce power losses, and lower wiring harness weight are urgent technical issues that the industry needs to address. Summary of the Invention

[0003] This invention provides a power grid system and vehicle for an active suspension system to solve the technical problems of how to improve the energy conversion efficiency of the active suspension system, reduce power loss, and reduce the weight of the wiring harness, and at least provides a beneficial option or creates conditions.

[0004] This invention provides a power grid system for an active suspension system, comprising: a power supply system, a voltage-stabilized energy storage system, a power distribution system, and a load system; The power supply system and the voltage-stabilized energy storage system are connected in parallel; the output of the power supply system is connected to the input of the power distribution system, and the output of the voltage-stabilized energy storage system is connected to the input of the power distribution system; the output of the power distribution system is connected to the load system, and the load system is provided with multiple load interfaces, which are used to connect to the electrical components of the active suspension system to provide power to the electrical components; The power supply system is used to: generate 48V power supply and transmit the 48V power supply to the voltage-stabilized energy storage system and the power distribution system; the voltage-stabilized energy storage system is used to: stabilize the 48V power supply; the power distribution system is used to: distribute current to each load interface in the load system; the load system is used to connect to the electrical components of the active suspension system through its load interfaces.

[0005] Furthermore, the voltage-stabilized energy storage system is also used to: release and supplement the current demand during peak load operation.

[0006] Furthermore, the voltage-stabilized energy storage system is also used to absorb the reverse electromotive force fed back from the load system.

[0007] Furthermore, the power supply system includes: a high-voltage battery and a DC / DC module; the output terminal of the high-voltage battery is connected to the input terminal of the DC / DC module, and the output terminal of the DC / DC module is connected to the input terminal of the power distribution system; the DC / DC module is used to convert the output voltage of the high-voltage battery into DC to output a 48V voltage, thereby generating a 48V power supply.

[0008] Furthermore, the voltage-stabilized energy storage system includes: a supercapacitor adapted to 48V, the supercapacitor being connected in parallel with the power supply system, the supercapacitor being used to: promptly release its stored energy to supplement the current that the power supply system fails to provide in time when the load system generates a large surge current demand; and absorb and store this reverse energy when the load system generates a reverse electromotive force.

[0009] Furthermore, the power distribution system includes a 48V distribution box, which is used to distribute current to each load interface in the load system.

[0010] Furthermore, the 48V distribution box is equipped with a fuse device on each distribution line. The fuse device is used to disconnect the distribution line when the corresponding distribution line exceeds the corresponding set current threshold.

[0011] Furthermore, the safety device includes a fuse.

[0012] Furthermore, the fuse is a mechanical fuse.

[0013] On the other hand, a vehicle is provided that integrates an electrical grid system for an active suspension system as described in any of the above specific embodiments.

[0014] The present invention has at least the following beneficial effects: The system of the present invention, by constructing a 48V power grid system, improves energy conversion efficiency and reduces current in the wiring harness by increasing the voltage in the lines, while ensuring the normal power requirements of the electrical components of the active suspension system, thereby reducing losses in the wiring harness. This, in turn, reduces the overall power loss of the system. Furthermore, because the current passing through the wiring harness is reduced, the required diameter of the wiring harness is lowered, thus reducing the weight of the power supply wiring harness. The present invention also provides a corresponding vehicle, the beneficial effects of which are similar to those of the system and will not be repeated here. The present invention is primarily applicable to the field of vehicle technology. Attached Figure Description

[0015] The accompanying drawings are provided to further understand the technical solutions of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the technical solutions of the present invention, and do not constitute a limitation on the technical solutions of the present invention.

[0016] Figure 1 This is a schematic diagram of the system connection structure of the power grid system used for the active suspension system; Figure 2 This is a block diagram of specific components in a power grid system used for an active suspension system; Figure 3 This is a schematic diagram of the connection structure between the load system and the external load. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0018] It should be noted that although functional modules are divided in the system diagram and the logical order is shown in the flowchart, in some cases, the steps shown or described may be performed in a different order than the module division in the system or the order in the flowchart. The terms "first," "second," etc., in the specification, claims, and the aforementioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0019] Before providing a detailed description of the embodiments of this application, some of the nouns and terms involved in the embodiments of this application will be explained first. The nouns and terms involved in the embodiments of this application are subject to the following interpretations.

[0020] Supercapacitors, formally known as electrochemical capacitors, are also called electric double-layer capacitors or gold capacitors. They primarily rely on the electric double-layer effect (physical electrostatic adsorption) at the electrode / electrolyte interface to store charge, sometimes supplemented by rapid pseudocapacitive reactions (rapid, reversible chemical reactions on the surface). They possess a much higher power density than batteries (very fast charging and discharging), a much higher energy density than traditional capacitors (storing more electrical energy), and an extremely long cycle life (reaching hundreds of thousands or even millions of cycles).

[0021] A DC / DC module, also known as a DC / DC converter or switching power supply module, is a solid-state electronic device that converts one DC voltage into another. The DC / DC module in this application primarily outputs a 48V DC voltage.

[0022] In vehicle-related technologies, improving the energy conversion efficiency of active suspension systems, reducing power loss, and lowering wiring harness weight are technical issues that urgently need to be studied in the industry.

[0023] Please refer to Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the system connection structure of the power grid system used for active suspension systems. Figure 2 This is a block diagram of specific components in a power grid system used for active suspension systems. Figure 3 This is a schematic diagram of the connection structure between the load system and the external load.

[0024] To address the problems in the prior art, this application discloses a power grid system for an active suspension system. The power grid system mainly improves energy conversion efficiency, reduces power loss, and lowers the weight of the power supply harness by increasing the supply voltage.

[0025] The power grid system of the active suspension system includes: a power supply system 101, a voltage-stabilized energy storage system 102, a power distribution system 103, and a load system 104.

[0026] The power supply system 101 and the voltage-stabilized energy storage system 102 are connected in parallel; the output terminal of the power supply system 101 is connected to the input terminal of the power distribution system 103, and the output terminal of the voltage-stabilized energy storage system 102 is connected to the input terminal of the power distribution system 103.

[0027] The output terminal of the power distribution system 103 is connected to the load system 104. The load system 104 is provided with multiple load interfaces, which are used to connect to the electrical components of the active suspension system and provide power to the electrical components.

[0028] The power supply system 101 is used to generate 48V power and transmit the 48V power to the voltage-stabilized energy storage system 102 and the power distribution system 103.

[0029] The voltage-stabilized energy storage system 102 is used to stabilize the 48V power supply; the power distribution system 103 is used to distribute current to each load interface in the load system 104; the load system 104 is used to connect to the electrical components of the active suspension system through its load interfaces.

[0030] The power supply system 101 primarily provides electrical energy to the entire power grid system, serving as its power source. Therefore, the power supply system 101 generally includes an energy storage unit and an energy output unit. The energy storage unit's main function is to store electrical energy in various forms, most typically chemical energy. This involves converting electrical energy into chemical energy through an electrochemical reaction, storing it, and then converting the chemical energy back into electrical energy when needed. The energy output unit then converts the electrical energy output from the energy storage unit to a suitable voltage and current. In this application, the energy output unit primarily outputs a 48V voltage. In some further embodiments, the power supply system 101 includes a high-voltage battery and a DC / DC module; the output terminal of the high-voltage battery is connected to the input terminal of the DC / DC module, and the output terminal of the DC / DC module is connected to the input terminal of the power distribution system 103; the DC / DC module converts the output voltage of the high-voltage battery into DC power to output a 48V voltage, thereby generating a 48V power supply. In this embodiment, the energy storage unit is a high-voltage battery, and the energy output unit is a DC / DC module.

[0031] The energy storage and voltage stabilization system supplements and assists the power supply system 101 to maintain the stability of the entire power grid. Therefore, the energy storage and voltage stabilization system is connected in parallel with the power supply system 101. The energy storage and voltage stabilization system stores a portion of the electrical energy output by the power supply system 101, so that when the power supply system 101 encounters a problem, this stored electrical energy can be released to maintain the power supply of the entire power grid by releasing backup energy. Of course, in addition to maintaining the power supply of the entire power grid by releasing backup energy, in some further embodiments, the energy storage and voltage stabilization system is also used to: release and supplement the current demand during peak load operation and absorb the reverse electromotive force feedback from the load system 104. To realize and meet the functional requirements of the energy storage and voltage stabilization system, in some further embodiments, the energy storage and voltage stabilization system includes: a 48V supercapacitor, which is connected in parallel with the power supply system 101. When all loads of the active suspension system are operating intensely and generating large surge current demands, the supercapacitor promptly releases its stored energy to supplement the current that the DC / DC module fails to provide in time; when the load motor generates a reverse electromotive force, the supercapacitor absorbs and stores this reverse energy.

[0032] The function of the power distribution system 103 is to distribute the electrical energy output from the power supply system 101 and the energy storage and voltage regulation system. The power distribution system 103 has multiple distribution lines, each connected to a corresponding load interface in the load system 104. The power distribution system 103 distributes the corresponding current according to the electrical energy required by the load interface, thereby ensuring the normal operation of the electrical components of the active suspension system. In some further embodiments, the power distribution system 103 is a 48V distribution box, capable of distributing 48V voltage lines. To ensure the safety of each distribution line, in some further embodiments, the 48V distribution box is equipped with a fuse on each distribution line. This fuse disconnects the distribution line when its corresponding current exceeds a set current threshold. This fuse controls the current in the distribution line, preventing excessive current from affecting the stability of the entire system. In some further embodiments, the fuse is a fuse, specifically a mechanical fuse.

[0033] The load system 104 provides corresponding load interfaces so that the electrical components of the active suspension system can be connected to the corresponding interfaces, thereby providing power to the electrical components of the active suspension system. The number of load interfaces in the load system 104 is determined according to actual needs. In some specific embodiments, the number of load interfaces is four, namely a first load interface, a second load interface, a third load interface, and a fourth load interface. The first load interface is connected to load 1 of the active suspension system, the second load interface is connected to load 2 of the active suspension system, the third load interface is connected to load 3 of the active suspension system, and the fourth load interface is connected to load 4 of the active suspension system.

[0034] This invention constructs a 48V power grid system and, by increasing the voltage in the lines, improves energy conversion efficiency while ensuring the normal power requirements of the electrical components of the active suspension system, thereby reducing the current in the wiring harness and minimizing losses within it. This, in turn, reduces the overall power loss of the system. Furthermore, because the current flowing through the wiring harness is reduced, the required diameter of the harness is lowered, thus reducing the weight of the power supply wiring harness.

[0035] On the other hand, the present invention also provides a vehicle that integrates an electrical grid system for an active suspension system as described in any of the above specific embodiments.

[0036] The terms “first,” “second,” “third,” “fourth,” etc. (if present) in the specification and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein. Furthermore, the terms “comprising” and “having,” and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatuses.

[0037] It should be understood that in this application, "at least one (item)" means one or more, and "more than" means two or more. "And / or" is used to describe the relationship between related objects, indicating that three relationships can exist. For example, "A and / or B" can represent three cases: only A exists, only B exists, and both A and B exist simultaneously, where A and B can be singular or plural. The character " / " generally indicates that the preceding and following related objects are in an "or" relationship. "At least one (item) of the following" or similar expressions refer to any combination of these items, including any combination of single or plural items. For example, at least one (item) of a, b, or c can represent: a, b, c, "a and b", "a and c", "b and c", or "a and b and c", where a, b, and c can be single or multiple.

[0038] In the several embodiments provided in this application, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and 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, apparatuses, or units, and may be electrical, mechanical, or other forms.

[0039] 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.

[0040] Furthermore, 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. The integrated unit can be implemented in hardware or as a software functional unit.

[0041] If the integrated unit 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 all or 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 described in the various embodiments of this application. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0042] Although the description of this application has been quite detailed and particularly focused on several of the described embodiments, it is not intended to limit itself to any of these details or embodiments or any particular embodiment. Rather, it should be considered as effectively covering the intended scope of this application by referring to the appended claims and taking into account the prior art, which provides for a broad possible interpretation of these claims. Furthermore, the foregoing description of this application with respect to embodiments foreseeable by the inventors is intended to provide a useful description, and non-substantial modifications to this application that have not yet been foreseen may still represent equivalent modifications.

[0043] It should be noted that in all specific embodiments of this application, when processing data related to user identity or characteristics, such as user information, user behavior data, user historical data, and user location information, user permission or consent is obtained first. Furthermore, the collection, use, and processing of this data comply with relevant laws, regulations, and standards. In addition, when embodiments of this application require access to sensitive personal information of users, separate permission or consent from the user is obtained through pop-ups or redirection to confirmation pages. Only after obtaining the user's separate permission or consent is the necessary user-related data required for the proper functioning of these embodiments acquired.

Claims

1. A power grid system for an active suspension system, characterized in that, include: Power supply system, voltage stabilization and energy storage system, power distribution system and load system; The power supply system and the voltage-stabilized energy storage system are connected in parallel; the output of the power supply system is connected to the input of the power distribution system, and the output of the voltage-stabilized energy storage system is connected to the input of the power distribution system; the output of the power distribution system is connected to the load system, and the load system is provided with multiple load interfaces, which are used to connect to the electrical components of the active suspension system to provide power to the electrical components; The power supply system is used to: generate 48V power supply and transmit the 48V power supply to the voltage-stabilized energy storage system and the power distribution system; the voltage-stabilized energy storage system is used to: stabilize the 48V power supply; the power distribution system is used to: distribute current to each load interface in the load system; the load system is used to connect to the electrical components of the active suspension system through its load interfaces.

2. A power grid system for an active suspension system according to claim 1, characterized in that, The voltage-stabilized energy storage system is also used to: release and supplement the current demand during peak load operation.

3. A power grid system for an active suspension system according to claim 2, characterized in that, The voltage-stabilized energy storage system is also used to absorb the reverse electromotive force fed back from the load system.

4. A power grid system for an active suspension system according to claim 1, characterized in that, The power supply system includes a high-voltage battery and a DC / DC module; the output terminal of the high-voltage battery is connected to the input terminal of the DC / DC module, and the output terminal of the DC / DC module is connected to the input terminal of the power distribution system; the DC / DC module is used to convert the output voltage of the high-voltage battery into DC to output a 48V voltage, thereby generating a 48V power supply.

5. A power grid system for an active suspension system according to claim 3, characterized in that, The voltage-stabilized energy storage system includes a 48V-compatible supercapacitor connected in parallel with the power supply system. The supercapacitor is used to: release its stored energy in a timely manner to supplement the current that the power supply system fails to provide in time when the load system generates a large surge current demand; and absorb and store the reverse energy when the load system generates a reverse electromotive force.

6. A power grid system for an active suspension system according to claim 1, characterized in that, The power distribution system includes a 48V distribution box, which is used to distribute current to each load interface in the load system.

7. A power grid system for an active suspension system according to claim 6, characterized in that, The 48V distribution box is equipped with a fuse device on each distribution line. The fuse device is used to disconnect the distribution line when the corresponding distribution line exceeds the corresponding set current threshold.

8. A power grid system for an active suspension system according to claim 7, characterized in that, The safety device includes a fuse.

9. A power grid system for an active suspension system according to claim 8, characterized in that, The fuse is a mechanical fuse.

10. A vehicle, characterized in that, The vehicle integrates an electrical grid system for an active suspension system as described in any one of claims 1 to 9.

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