Steering-by-wire power supply system and vehicle

Abstract

The utility model discloses a steer-by-wire power supply system and a vehicle. The steer-by-wire power supply system comprises a DC / DC body and a power supply capacitor assembly, the power supply capacitor assembly and the DC / DC body are integrally configured, and the power supply capacitor assembly comprises a power supply capacitor; and the output of the power supply capacitor and the output of the DC / DC body are in a unidirectional isolation state and jointly construct a dual-output channel structure for respectively supplying power to a main power supply and a standby power supply of the dual-power-supply electric appliance. According to the utility model, the DC / DC internally integrated with the power supply capacitor is designed, and the output of the power supply capacitor and the output of the DC / DC are unidirectionally isolated, so that dual-channel output is constructed. The dual-channel output of the DC / DC supplies power to the main power supply and the standby power supply of the dual-power-supply electric appliance, so that the existing dual-power-supply system scheme is improved, the number of storage batteries is reduced, the internal space of an automobile is saved, and the weight reduction effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of automobile power supply systems, and in particular relates to a wire-controlled steering power supply system. Background Art

[0002] The development of automobile electrification and intelligence (i.e. new energy vehicles) has stimulated the iteration of wire-controlled technology, especially wire-controlled steering and wire-controlled braking, but the requirements for redundancy of the vehicle's dual power supply system are becoming increasingly higher.

[0003] At present, the power supply systems of new energy vehicles are roughly divided into the following two types:

[0004] (I) The first type of power supply system includes a single-channel DC / DC and a single battery. The specific structure is as follows Figure 1 As shown;

[0005] (ii) The second type of power supply system includes a dual-channel DC / DC and dual batteries. The specific structure is as follows Figure 2 As shown;

[0006] The first type of power supply system mentioned above is the power supply system solution for most new energy vehicles at present, but the first type of power supply system cannot meet the redundancy requirements of the dual power supply system; and the second type of power supply system requires two batteries, which requires a large space and is heavy, which is not conducive to reducing the weight of the entire vehicle.

[0007] The information disclosed in this background technology section is only intended to enhance the understanding of the overall background of the invention and should not be regarded as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0008] In order to solve the technical problems of inflexible applicability and large space requirement of the power supply system of new energy vehicles in the prior art, a wire-controlled steering power supply system is provided.

[0009] In a first aspect, the utility model provides a steer-by-wire power supply system, comprising:

[0010] DC / DC body;

[0011] A power supply capacitor assembly, which is integrated with the DC / DC body, wherein the power supply capacitor assembly includes a power supply capacitor;

[0012] The output of the power supply capacitor and the output of the DC / DC body are in a unidirectional isolation state and together form a dual output channel structure for supplying power to the main power supply and the backup power supply of dual-power electrical appliances respectively.

[0013] In some embodiments, the DC / DC body and the power supply capacitor assembly are respectively configured on the first output channel and the second output channel in the dual output channel structure, wherein the second output channel is a unidirectional branch channel of the first output channel.

[0014] In some embodiments, the first output channel is configured with a battery, a power source of a single-power appliance, and a main power source of a dual-power appliance connected in parallel; the battery, the power source of the single-power appliance, and the main power source of the dual-power appliance are jointly constructed as a first integral unit, wherein the first integral unit is configured on a non-unidirectional branch channel of the first output channel;

[0015] The second output channel is provided with the power supply capacitor and the backup power supply of the dual-power appliance connected in parallel with each other, and the power supply capacitor and the backup power supply of the dual-power appliance together form a second integral unit;

[0016] The first integral unit and the second integral unit are connected in parallel to each other and together constitute a third integral unit, and the third integral unit is connected in series with the DC / DC body.

[0017] In certain embodiments, when a non-unidirectional branch channel of the first output channel fails and is unable to supply power normally and the second output channel is in a normal power supply state, a vehicle equipped with the wire-controlled steer power supply system has enough power from the second output channel to pull over.

[0018] In some embodiments, when the DC / DC main body does not meet the power required by the sudden power change of electrical appliances related to the wire control steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state, and at least one of the battery and the power supply capacitor is in a discharge state based on the power supply status of the non-unidirectional branch channel of the first output channel, so that the wire control steering power supply system is in a voltage stabilization state;

[0019] When the DC / DC body meets the power required by the sudden power change of electrical appliances related to wire-controlled steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state and at least one of the battery and the power supply capacitor is in a charging state.

[0020] In some embodiments, the DC / DC main body comprises:

[0021] DC transformer module;

[0022] A control module is electrically connected to the DC transformer module and converts the high voltage power supply into a low voltage power supply through the DC transformer module.

[0023] In some embodiments, the control module is electrically connected to the power supply capacitor to control the working state of the power supply capacitor.

[0024] In some embodiments, the battery is a 12V battery.

[0025] In some embodiments, the power supply capacitor is connected to the DC / DC body via a mounting frame, wherein the mounting frame is circumferentially arranged on an outer peripheral wall of the power supply capacitor.

[0026] In a second aspect, the utility model provides a vehicle, comprising the steer-by-wire power supply system.

[0027] Compared with the prior art, the technical effects achieved by the utility model are as follows:

[0028] The utility model designs a DC / DC with an internal integrated power supply capacitor (especially suitable for a voltage level of 12V), and the output of the power supply capacitor is unidirectionally isolated from the output of the DC / DC to construct a dual-channel output. The dual-channel output of the DC / DC supplies power to the main power supply and the backup power supply of the dual-power electrical appliances respectively, thereby improving the current dual-power supply system solution, reducing the number of batteries, thereby saving space inside the car and achieving a weight reduction effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of a single-channel DC / DC and single battery power supply system provided in the prior art;

[0030] Figure 2 It is a structural schematic diagram of a dual-channel DC / DC and dual-battery power supply system provided in the prior art;

[0031] Figure 3 It is a schematic diagram of the structure of a DC / DC dual power supply system using an internal integrated power supply capacitor (voltage level 12V) provided in one embodiment of the utility model;

[0032] Figure 4 It is a DC / DC isometric diagram of an internal integrated power supply capacitor provided in one embodiment of the utility model;

[0033] Figure 5 It is an axonometric diagram of a DC / DC with internal integrated power supply capacitor without a top cover provided in one embodiment of the utility model;

[0034] Figure 6 It is a DC / DC exploded diagram of an internal integrated power supply capacitor provided in one embodiment of the utility model;

[0035] Figure 7 It is an exploded view of a power supply capacitor assembly provided in one embodiment of the utility model;

[0036] Figure 8 This is a schematic diagram of the internal structure of a DC / DC body provided in one embodiment of the utility model;

[0037] Fig. 9 It is a working schematic diagram of a vehicle with a steer-by-wire dual power supply system provided in one embodiment of the utility model. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is described below by means of specific embodiments in conjunction with the accompanying drawings. It should be understood that one or more steps mentioned in the present invention do not exclude the existence of other methods and steps before and after the combination step, or other methods and steps can be inserted between these explicitly mentioned steps. It should also be understood that these examples are only used to illustrate the present invention and are not used to limit the scope of the present invention. Unless otherwise specified, the numbering of each method step is only for the purpose of identifying each method step, and does not limit the order of arrangement of each method or the scope of implementation of the present invention. Changes or adjustments in their relative relationships can also be regarded as the scope of implementation of the present invention without substantial changes in the technical content.

[0039] The sources of the raw materials and instruments used in the examples are not particularly limited and can be purchased from the market or prepared according to conventional methods known to those skilled in the art.

[0040] like Figure 3 As shown, a wire-controlled steering power supply system is provided, which solves the technical problems existing in the first and second power supply systems in the power supply systems of new energy vehicles (the first power supply system cannot meet the redundancy requirements of the dual power supply system; and the second power supply system requires two batteries, which requires a large space and is heavy, which is not conducive to reducing the weight of the whole vehicle). The wire-controlled steering power supply system is suitable for vehicles, especially automobiles.

[0041] like Figure 6 As shown, in one embodiment, the utility model provides a steer-by-wire power supply system, including: a DC / DC body 10 and a power supply capacitor assembly 30 .

[0042] like Figure 4-Figure 6 and Figure 8As shown, in one embodiment, the DC / DC body 10 includes a DC transformer module 108 and a control module 107, and the control module 107 is electrically connected to the DC transformer module 108. The DC / DC body 10 is configured with a high-voltage input interface 101, which is connected to a high-voltage power supply to supply power to the DC transformer module 108 with unidirectional isolation output. Under the control of the control module 107, the DC transformer module 108 converts the high-voltage power supply into a low-voltage power supply (especially a 12V power supply); the DC / DC body 10 is also configured with a first low-voltage positive output interface 105 and a second low-voltage positive output interface 106 and a low-voltage control interface 102, and the first low-voltage positive output interface 105 and the second low-voltage positive output interface 106 are constructed as the input of a dual-output channel structure, and the low-voltage control interface 102 is used to connect the control module 107. In one embodiment, the control module 107 is electrically connected to the power supply capacitor 302 to control the working state of the power supply capacitor 302. In one embodiment, the DC / DC body 10 further includes a conductor (in one embodiment, the conductor is a conductive wire) for connecting the electrical components (such as the DC transformer module 108) in the wire-controlled steering power supply system to the power interface and a housing 40 for constructing the internal volume of the DC / DC body 10. In one embodiment, the DC / DC body 10 is also provided with a cooling water inlet 103 and a cooling water outlet 104 and a cooling channel connecting the cooling water inlet 103 and the cooling water outlet 104. The cooling channel absorbs the heat dissipated from the DC / DC body 10 through the internal low-temperature water. When the water temperature in the cooling channel rises to a certain temperature due to the absorption of heat, it is discharged through the cooling water outlet 104, and the low-temperature water is re-injected into the cooling channel through the cooling water inlet 103.

[0043] like Figure 7 As shown, the power supply capacitor assembly 30 includes a power supply capacitor 302, the power supply capacitor 302 has a relatively small capacity, and the power supply capacitor assembly 30 is integrated with the DC / DC body 10; in one embodiment, a single power supply capacitor 302 is generally cylindrical and a plurality of them are arranged in parallel in the same row.

[0044] In one embodiment, the power supply capacitor assembly 30 further includes a mounting frame, and the power supply capacitor 302 is connected to the DC / DC body 10 through the mounting frame, wherein the mounting frame is circumferentially arranged on the outer peripheral wall of the power supply capacitor 302. In one embodiment, the mounting frame includes a bottom plate portion 303 and an arc portion 301, wherein the bottom plate portion 303 is plate-shaped and is located on the bottom surface of the power supply capacitor 302, and the entire mounting frame is hoop-shaped and is sleeved on the outer peripheral walls of all the power supply capacitors 302 to keep all the power supply capacitors 302 compactly arranged and stably positioned. The bottom plate portion 303 and the arc portion 301 are connected by bolts at both side ends of the mounting frame.

[0045] The output of the power supply capacitor 302 and the output of the DC / DC body 10 are in a unidirectional isolation state and together form a dual output channel structure for supplying power to the main power supply and the backup power supply of the dual-power appliance respectively.

[0046] like Figure 3 As shown, in one embodiment, the DC / DC body 10 and the power supply capacitor assembly 30 are respectively configured on the first output channel and the second output channel in the dual output channel structure, wherein the second output channel is a unidirectional branch channel of the first output channel, and the construction of the unidirectional branch channel is based on configuring a diode in the channel. The second output channel is connected to the second low-voltage positive output interface 106, and the non-unidirectional branch channel of the first output channel is connected to the first low-voltage positive output interface 105.

[0047] In one embodiment, a battery, a power source for a single-power appliance, and a main power source for a dual-power appliance are connected in parallel on the first output channel; the battery, the power source for the single-power appliance, and the main power source for the dual-power appliance are jointly constructed as a first integral unit, wherein the first integral unit is configured on a non-unidirectional branch channel of the first output channel; in one embodiment, the battery is a 12V battery.

[0048] The second output channel is provided with a power supply capacitor 302 and a backup power supply of a dual-power appliance connected in parallel, and the power supply capacitor 302 and the backup power supply of the dual-power appliance together form a second integral unit;

[0049] The first integral unit and the second integral unit are connected in parallel to each other and together constitute a third integral unit. The third integral unit is connected in series with the DC / DC body 10 .

[0050] In one embodiment, when a non-unidirectional branch channel of a first output channel fails and is unable to supply power normally and a second output channel is in a normal power supply state, a vehicle equipped with a steer-by-wire power supply system uses power from the second output channel to safely pull over to the side of the road.

[0051] In one embodiment, when the DC / DC main body 10 does not meet the power required by the sudden power change of the electrical appliances related to the wire control steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state, and at least one of the storage battery and the power supply capacitor 302 is in a discharge state based on the power supply status of the non-unidirectional branch channel of the first output channel, so that the wire control steering power supply system is in a stable voltage state;

[0052] When the DC / DC main body 10 meets the power required by the sudden power change of electrical appliances related to the wire-controlled steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state and at least one of the battery and the power supply capacitor 302 is in a charging state.

[0053] like Fig. 9 As shown, the vehicle equipped with the above-mentioned wire-controlled steering power supply system has the following functions:

[0054] In normal use, the DC / DC dual-channel normal output power is used to charge the battery and operate the vehicle electrical appliances;

[0055] When 12V_1+ (DC transformer module) fails: the DC / DC of the internal integrated power supply capacitor 302 (voltage level 12V) inputs the 12V_1+ fault signal to the ECU (control module 107), and the ECU forwards the signal to the instrument, which displays the 12V_1+ fault and prompts the driver to pull over. Under the effect of unidirectional isolation, the power supply capacitor 302 power supply only serves as a redundant power supply to supply backup power to dual-power appliances.

[0056] When 12V_2+ (power supply capacitor) fails: the DC / DC of the internal integrated power supply capacitor 302 (voltage level 12V) inputs the 12V_2+ fault signal to the ECU, and the ECU forwards the signal to the instrument. The instrument displays 12V_2+ fault and prompts the driver to pull over. At this time, the 12V_2+ power supply is used;

[0057] The present steer-by-wire power supply system is designed with a DC / DC with an internal integrated power supply capacitor 302 (especially suitable for a voltage level of 12V), and the output of the power supply capacitor 302 is unidirectionally isolated from the output of the DC / DC, thereby constructing a dual-channel output. The dual-channel output of the DC / DC supplies power to the main power supply and the backup power supply of the dual-power electrical appliances, thereby improving the current dual-power supply system solution, reducing the number of batteries, thereby saving space inside the car and achieving a weight reduction effect.

[0058] The foregoing description of specific exemplary embodiments of the utility model is for the purpose of illustration and illustration. These descriptions are not intended to limit the utility model to the precise form disclosed, and it is clear that many changes and variations can be made based on the above teachings. The purpose of selecting and describing the exemplary embodiments is to explain the specific principles of the utility model and its practical application, so that those skilled in the art can realize and utilize various different exemplary embodiments of the utility model and various different options and changes. The scope of the utility model is intended to be defined by the claims and their equivalents.

Claims

1. A steer-by-wire power supply system, characterized in that: include: DC / DC body; A power supply capacitor assembly, which is integrated with the DC / DC body, wherein the power supply capacitor assembly includes a power supply capacitor; The output of the power supply capacitor and the output of the DC / DC body are in a unidirectional isolation state and together form a dual output channel structure for supplying power to the main power supply and the backup power supply of dual-power electrical appliances respectively.

2. The steer-by-wire power supply system according to claim 1, characterized in that: The DC / DC body and the power supply capacitor assembly are respectively configured on the first output channel and the second output channel in the dual output channel structure, wherein the second output channel is a unidirectional branch channel of the first output channel.

3. The steer-by-wire power supply system according to claim 2, characterized in that: The first output channel is provided with a battery, a power source of a single-power appliance, and a main power source of a dual-power appliance connected in parallel; the battery, the power source of the single-power appliance, and the main power source of the dual-power appliance are jointly constructed into a first integral unit, wherein the first integral unit is arranged on a non-unidirectional branch channel of the first output channel; The second output channel is provided with the power supply capacitor and the backup power supply of the dual-power appliance connected in parallel with each other, and the power supply capacitor and the backup power supply of the dual-power appliance together form a second integral unit; The first integral unit and the second integral unit are connected in parallel to each other and together constitute a third integral unit, and the third integral unit is connected in series with the DC / DC body.

4. The steer-by-wire power supply system according to claim 2, characterized in that : When the non-unidirectional branch channel of the first output channel fails and is in a state of being unable to supply power normally and the second output channel is in a state of normal power supply, the vehicle equipped with the wire-controlled steering power supply system has enough power from the second output channel to park the vehicle by the side of the road.

5. The steer-by-wire power supply system according to claim 3, characterized in that: When the DC / DC main body does not meet the power required by the sudden power change of electrical appliances related to the wire control steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state, and at least one of the battery and the power supply capacitor is in a discharge state based on the power supply status of the non-unidirectional branch channel of the first output channel, so that the wire control steering power supply system is in a voltage stabilization state; When the DC / DC body meets the power required by the sudden power change of electrical appliances related to wire-controlled steering, the non-unidirectional branch channel of the first output channel is in a normal power supply state and at least one of the battery and the power supply capacitor is in a charging state.

6. The steer-by-wire power supply system according to claim 1, characterized in that: The DC / DC main body comprises: DC transformer module; A control module is electrically connected to the DC transformer module and converts the high voltage power supply into a low voltage power supply through the DC transformer module.

7. The steer-by-wire power supply system according to claim 6, characterized in that: The control module is electrically connected to the power supply capacitor to control the working state of the power supply capacitor.

8. The steer-by-wire power supply system according to claim 3, characterized in that: The storage battery is a 12V storage battery.

9. The steer-by-wire power supply system according to claim 1, characterized in that: The power supply capacitor is connected to the DC / DC body via a mounting frame, wherein the mounting frame is circumferentially arranged on an outer peripheral wall of the power supply capacitor.

10. A vehicle, characterized in that: A steer-by-wire power supply system comprising any one of claims 1-9.

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