Auxiliary power source system and vehicle

Abstract

The embodiment of the utility model provides an auxiliary power source system and a vehicle, the auxiliary power source system is used for the vehicle, the vehicle at least comprises a battery assembly, and the auxiliary power source system is characterized by comprising a power distribution assembly, a first direct current converter and a second direct current converter; the input end of the power distribution assembly is electrically connected with the battery assembly, and the output end of the power distribution assembly is electrically connected with the first direct-current converter and the second direct-current converter. The first DC converter is used for being electrically connected with a first load assembly to output a first voltage to the first load assembly, the second DC converter is used for being electrically connected with a second load assembly to output a second voltage to the second load assembly, and the first voltage is different from the second voltage. According to the power auxiliary system, the technical problems that an existing power auxiliary system is single in output voltage and insufficient in power are solved, and the use experience of a vehicle user is improved.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to a Chinese patent application filed with the Chinese Patent Office on November 10, 2023, with application number 2023230479503 and title “An Auxiliary Power Source System and a Vehicle”, the entire contents of which are incorporated by reference into this application. Technical Field

[0003] The present application belongs to the technical field of new energy vehicles, and specifically relates to an auxiliary power source system and a vehicle. Background Art

[0004] With the development of science and technology, new energy vehicles are increasingly used in our lives. As the most common new energy vehicle, electric vehicles play an increasingly important role in people's lives. Electric vehicles require an auxiliary power source system to convert the electrical energy in the battery assembly into direct current and distribute it to the various components of the electric vehicle to enable the components to function.

[0005] However, in the prior art, the output voltage of the auxiliary power source system of electric vehicles is generally 12 volts or 24 volts DC. When the existing vehicles need to carry high-power loads with a required voltage higher than 24 volts, there are problems such as insufficient output power and inability to meet the high-power output requirements, and poor compatibility due to the single output voltage, which brings inconvenience to the application and promotion of electric vehicles. Utility Model Content

[0006] The present application aims to provide an auxiliary power source system and a vehicle to solve the problems of insufficient output power of the auxiliary power source system of existing vehicles, inability to meet high-power output requirements, and poor compatibility due to a single output voltage.

[0007] In order to solve the above technical problems, this application is implemented as follows:

[0008] In a first aspect, the present application discloses an auxiliary power source system, the auxiliary power source system is used for a vehicle, the vehicle at least includes a battery assembly, and is characterized in that the auxiliary power source system includes: a power distribution assembly, a first DC converter and a second DC converter;

[0009] The input end of the power distribution component is used to be electrically connected to the battery component, and the output end of the power distribution component is electrically connected to the input end of the first DC converter and the input end of the second DC converter respectively;

[0010] The first DC converter is used to be electrically connected to a first load component to output a first voltage to the first load component, and the second DC converter is used to be electrically connected to a second load component to output a second voltage to the second load component, and the first voltage is different from the second voltage.

[0011] Optionally, at least one of the first voltage and the second voltage is higher than 24V.

[0012] Optionally, the first DC converter includes a first output terminal and a second output terminal, the first output terminal is used to be electrically connected to the first load component to output a first voltage to the first load component, and the second output terminal is used to be electrically connected to a third load component to output a third voltage to the third load component, and the third voltage is equal to the first voltage.

[0013] Optionally, the auxiliary power source system further includes a third DC converter, an input end of the third DC converter is electrically connected to the power distribution component, and an output end of the third DC converter is electrically connected to the third load component.

[0014] Optionally, the third load component is an electromechanical brake component, which is used to perform a braking operation of the vehicle; wherein the third voltage is 48 volts.

[0015] Optionally, the electromechanical brake assembly includes a first electromechanical brake and a second electromechanical brake, wherein the first electromechanical brake is electrically connected to the second output end; and the second electromechanical brake is electrically connected to the output end of the third DC converter.

[0016] Optionally, the auxiliary power source system further includes a first energy storage component, one end of the first energy storage component is electrically connected between the first DC converter and the first load component, and the other end of the first energy storage component is grounded.

[0017] Optionally, the auxiliary power source system also includes a second energy storage component, the output end of the second energy storage component is electrically connected to the first load component, the second load component and the third load component, respectively, and the second energy storage component is used to supply power to the first load component, the second load component and the third load component when the battery component is not started.

[0018] Optionally, the input end of the second energy storage component is electrically connected to at least one of the first DC converter and the second DC converter, so as to be electrically connected to the power distribution component through the first DC converter and / or the second DC converter.

[0019] Optionally, the auxiliary power source system further includes an integrated controller; the second DC converter is integrated in the integrated controller.

[0020] In a second aspect, the present application further discloses a vehicle, the vehicle comprising any one of the auxiliary power source systems and battery components described above, the auxiliary power source system being electrically connected to the battery component.

[0021] In an embodiment of the present application, an auxiliary power source system is provided, wherein the auxiliary power source system shunts the high-voltage direct current output from the vehicle battery assembly through a power distribution assembly, enters the first direct current converter and the second direct current converter through the output end, and converts the high-voltage direct current into direct current of a first voltage through the first direct current converter, which is used to supply energy to the first load assembly; specifically, the first direct current converter can convert the high-voltage direct current into 48 volt direct current, and the first load assembly is a 48 volt high-power load; at the same time, the high-voltage direct current is converted into direct current of a second voltage different from the first voltage through the second direct current converter, which is used to supply energy to the second load assembly; specifically, the second direct current converter can convert the high-voltage direct current into 12 volt direct current, and the second load assembly is a 12 volt low-power load. The auxiliary power source system provided in the embodiment of the present application is compatible with at least two power voltage requirements of 12 volts and 48 volts, and because the load power is proportional to the voltage, by providing 48 volts direct current to supply energy to the high-power first load assembly, the output power of the auxiliary power source system is improved, and the problem that the output power of the existing auxiliary power source system is insufficient, the high-power output demand cannot be met, and the poor compatibility caused by the single output voltage is solved.

[0022] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0024] Figure 1 is a structural schematic diagram of an auxiliary power source system described in this application;

[0025] Figure 2 is a further improved structural schematic diagram of an auxiliary power source system described in the present application;

[0026] Figure 3 is a further optimized structural schematic diagram of an auxiliary power source system described in the present application;

[0027] Figure 4is a schematic diagram of the structure of the electromechanical controller control unit described in the embodiment of the present application;

[0028] Figure 5 This is the internal DC solution of the integrated controller described in the embodiment of the present application.

[0029] Figure numerals: 1. battery assembly; 2. power distribution assembly; 3. first DC converter; 4. second DC converter; 5. first load assembly; 6. second load assembly; 7. third load assembly; 71. first electromechanical brake; 72. second electromechanical brake; 8. first energy storage assembly; 9. third DC converter; 10. second energy storage assembly; 11. integrated controller. DETAILED DESCRIPTION

[0030] The embodiments of the utility model will be described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0031] The term "first" or "second" in the specification and claims of this application may include one or more of the features explicitly or implicitly. In the description of this utility model, unless otherwise specified, "multiple" means two or more. In addition, "and / or" in the specification and claims means at least one of the connected objects, and the character " / " generally means that the objects connected before and after are in an "or" relationship.

[0032] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0034] The embodiment of the present application provides an auxiliary power source system and a vehicle. The embodiment of the present application may not limit the specific type of the auxiliary power source system.

[0035] Reference Figure 1 , showing a structural schematic diagram of an auxiliary power source system suitable for a vehicle described in the present application, the vehicle at least includes a battery assembly 1, and the auxiliary power source system may at least include: a power distribution assembly 2, a first DC converter 3 and a second DC converter 4; the input end of the power distribution assembly 2 is used to be electrically connected to the battery assembly 1, and the output end of the power distribution assembly 2 is electrically connected to the first DC converter 3 and the second DC converter 4 respectively; the first DC converter 3 is used to be electrically connected to the first load assembly 5 to output a first voltage to the first load assembly 5, and the second DC converter 6 is used to be electrically connected to the second load assembly 6 to output a second voltage to the second load assembly, and the first voltage is different from the second voltage.

[0036] In an embodiment of the present application, an auxiliary power source system is provided, which diverts the high-voltage direct current output from the battery component 1 through the power distribution component 2, and enters the first DC converter 3 and the second DC converter 4 through the output end respectively, and converts the high-voltage direct current into direct current of a first voltage through the first DC converter 4, which is used to supply energy to the first load component 5; at the same time, the high-voltage direct current is converted into direct current of a second voltage different from the first voltage through the second DC converter 4, which is used to supply energy to the second load component 6.

[0037] For example, the first DC converter 3 can convert high-voltage DC current into 48V DC, and the first load component 5 is a 48V high-power load; the second DC converter 4 can convert high-voltage DC into 12V DC, and the second load component 6 is a 12V low-power load; the first load component 5 can include a vehicle central control system component or a starting system component; the second load component 6 can include a vehicle interior lighting system component. The auxiliary power source system provided in the embodiment of the present application is compatible with at least two load power voltage requirements of 12V and 48V, and because the load power is proportional to the voltage, by providing 48V DC to power the high-power first load component, the output power of the auxiliary power source system is improved, solving the problem that the output power of the existing auxiliary power source system is insufficient, cannot meet the high-power output demand, and the single output voltage leads to poor compatibility.

[0038] Optionally, at least one of the first voltage and the second voltage described in the present application is higher than 24 volts.

[0039] In the embodiment of the present application, at least one of the first voltage and the second voltage is higher than 24 volts, which solves the problem that the output voltage of the existing auxiliary power source system is only 12 volts or 24 volts and cannot meet the requirements of a larger power load. For example, the first voltage can be set to 48 volts, the second voltage can be set to 12 volts, etc. It should be noted that those skilled in the art can select specific values ​​of the first voltage and the second voltage according to actual needs, and no further elaboration is given here.

[0040] Optionally, the first DC converter 3 described in the present application includes a first output terminal and a second output terminal, the first output terminal is used to be electrically connected to the first load component 4 to output a first voltage to the first load component 4, and the second output terminal is used to be electrically connected to the third load component 7 to output a third voltage to the third load component 7, and the third voltage is equal to the first voltage.

[0041] In the embodiment of the present application, the first DC converter 3 outputs the first voltage and the third voltage to the first load component 4 and the third load component 7 through the first output terminal and the second output terminal respectively; the first load component 4 and the third load component 7 are in parallel relationship, and the first voltage and the third voltage are equal. Specifically, the third load component can be a vehicle component with the same voltage requirement as the first load component. For example, the first load 4 can include an auxiliary electric steering system inside the vehicle, etc.; the third load component can be an electric brake system in the brake system of the vehicle, etc.

[0042] Optionally, the auxiliary power source system described in the present application may further include a third DC converter 9, an input end of the third DC converter 9 is electrically connected to the power distribution component 2, and an output end of the third DC converter 9 is electrically connected to the third load component 7.

[0043] In an embodiment of the present application, an auxiliary power source system is provided, including a third DC converter 9 connected in parallel with the first DC converter 3. In a specific application, when the first DC converter 3 fails while the vehicle is driving, the third load component 7 can be powered by the third DC converter 9, that is, the third DC converter 9 can serve as a redundant backup to improve reliability.

[0044] Optionally, the third load component 7 described in the present application is an electromechanical brake component, which is used to perform a braking operation of the vehicle; wherein the third voltage is 48 volts.

[0045] In the embodiment of the present application, the third load component 7 is an electromechanical brake component, which is used to perform a braking operation of the vehicle; wherein the third voltage is 48 V. Specifically, the existing electromechanical brake component generally requires a working voltage of 48 V, and the normal and efficient operation of the electromechanical brake component is ensured by outputting the third voltage of 48 V, thereby improving the safety of the vehicle equipped with the auxiliary power source system.

[0046] Optionally, the electromechanical brake assembly described in the present application may include at least a first electromechanical brake 71 and a second electromechanical brake 72; wherein the first electromechanical brake 71 is electrically connected to the second output end; and the second electromechanical brake 72 is electrically connected to the output end of the third DC converter 9.

[0047] In the embodiment of the present application, the electromechanical brake assembly includes a first electromechanical brake 71 electrically connected to the second output end and a second electromechanical brake 72 electrically connected to the output end of the third DC converter 9, and one end of the third DC converter 9 is electrically connected to the power distribution assembly 2. Specifically, in application, the electromechanical brake assembly can be composed of a plurality of electronic mechanical brakes, and the plurality of electronic mechanical brakes are divided into a first electromechanical brake 71 and a second electromechanical brake 72 according to actual use requirements; through the first electromechanical brake 71 and the second electromechanical brake 72, both of them play a braking role at the same time when the vehicle system is working normally, when one of the electromechanical brakes fails due to a fault, the other electromechanical brake can still play a certain braking role, so as to avoid the vehicle causing safety risks to the user due to brake failure.

[0048] For example, see Figure 4 The first load component 4 may include a vehicle main control system, and the electronic mechanical brakes in the electromechanical brakes are respectively arranged on the axle control units of each wheel axle of the vehicle, and a braking command is issued to the electronic mechanical brakes through the axle control system, and then the braking operation is performed through the energy provided by the auxiliary power source system; the vehicle may also include multiple axle control units according to needs, and multiple electromechanical brake components are arranged at the same time, which will not be elaborated here.

[0049] Optionally, refer to Figure 3 The auxiliary power source system described in the present application may further include a first energy storage component 8, one end of the first energy storage component 8 is electrically connected between the first DC converter 3 and the first load component 5, and the other end of the first energy storage component 8 is grounded.

[0050] In the embodiment of the present application, a first energy storage component 8 is provided, one end of which is electrically connected between the first DC converter 3 and the first load component 5, and the other end of which is grounded, so as to ensure the instantaneous power output to the load component through the capacitor component 8 with faster charging and discharging. Specifically, the first energy storage component 8 can be a supercapacitor. When the vehicle is traveling short distances or in the city, it is necessary to frequently switch between peak power and working power, which will damage the service life of the battery component 1 and cause the problem of unstable output power. The fast charging and discharging of the supercapacitor is provided to ensure the output power when the vehicle starts and the recovery power when braking, thereby extending the service life of the battery component 1.

[0051] Optionally, the auxiliary power source system described in the present application may further include a second energy storage component 10, the output ends of the second energy storage component 10 are electrically connected to the first load component 5, the second load component 6 and the third load component 7, respectively, and the second energy storage component 10 is used to supply power to the first load component 5, the second load component 6 and the third load component 7 when the battery component 1 is not started.

[0052] In the embodiment of the present application, the auxiliary power source system may further include at least a second energy storage component 10, and the output end of the second energy storage component 10 is electrically connected to the first load component 5, the second load component 6 and the third load component 7 respectively. Specifically, the second energy storage component 10 is used to supply power to the first load component 5, the second load component 6 and the third load component 7 when the battery component 1 is not started. For example, the second energy storage component 10 can be an iron battery with an output voltage of 48 volts. When the vehicle does not start the battery component 1, the second energy storage component 10 can still discharge and supply energy to the vehicle load component, for example, the electromechanical brake component can still play a braking role to avoid danger to the vehicle.

[0053] In a specific application, the second energy storage component 10 can be formed by a plurality of iron batteries connected in series, and an iron battery management module can also be provided in the second energy storage component 10. The connection relationship between the iron batteries connected in series and the external load is controlled by the iron battery management module. For example, the second energy storage component 10 can be composed of four 12-volt iron batteries connected in series. Through the iron battery management module, two of the iron batteries can be controlled to output voltage to the second load component 6 with a required voltage of 24 volts, or one of the iron batteries can be controlled to output voltage to the second load component 6 with a required voltage of 12 volts, so as to ensure the normal working state of the load system in the entire vehicle when the battery component 1 is not started.

[0054] Optionally, the input end of the second energy storage component 10 described in the present application is electrically connected to at least one of the first DC converter 3 and the second DC converter 4, so as to be electrically connected to the power distribution component 2 through the first DC converter 3 and / or the second DC converter 4.

[0055] In an embodiment of the present application, the input end of the second energy storage component 10 is electrically connected to at least one of the first DC converter 3 and the second DC converter 4, and then electrically connected to the battery component 1 through the first DC converter 3 and / or the second DC converter 4, so that the second energy storage component 10 can be charged through the first DC converter 3 and / or the second DC converter 4 and the power supply component 2.

[0056] Optionally, the auxiliary power source system described in the present application further includes an integrated controller 11 ; the integrated controller 11 integrates a second DC converter 4 .

[0057] In the embodiment of the present application, an integrated controller 11 is provided, and the second DC converter 4 is integrated into the integrated controller 11. Specifically, the second DC converter 4 is integrated into the integrated controller 11 of the existing vehicle, which can improve the integration of the auxiliary power source system and save space and cost.

[0058] On the other hand, the present application also proposes a vehicle, which includes any one of the auxiliary power source systems described above and a battery assembly 1, wherein the battery assembly 1 is electrically connected to the auxiliary power source system.

[0059] It should be noted that in the embodiment of the present application, the specific structure of the auxiliary power source system is the same as the structure of the auxiliary power source system in the above embodiments, and its beneficial effects are similar, which will not be described in detail here. In the embodiment of the present application, the output power and output compatibility of the auxiliary power source system are improved, and the user experience is improved.

[0060] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0061] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An auxiliary power source system for a vehicle, the vehicle comprising a battery assembly (1), characterized in that: The auxiliary power source system comprises: a power distribution component (2), a first DC converter (3) and a second DC converter (4); The input end of the power distribution component (2) is used to be electrically connected to the battery component (1), and the output end of the power distribution component (2) is electrically connected to the input end of the first DC converter (3) and the input end of the second DC converter (4) respectively; The first DC converter (3) is used to be electrically connected to a first load component (5) so as to output a first voltage to the first load component (5), and the second DC converter (4) is used to be electrically connected to a second load component (6) so as to output a second voltage to the second load component (6), wherein the first voltage is different from the second voltage.

2. The auxiliary power source system according to claim 1, characterized in that: At least one of the first voltage and the second voltage is higher than 24V.

3. The auxiliary power source system according to claim 1, characterized in that: The first DC converter (3) comprises a first output end and a second output end, the first output end being used to be electrically connected to the first load component (5) so as to output a first voltage to the first load component (5), and the second output end being used to be electrically connected to the third load component (7) so as to output a third voltage to the third load component (7), the third voltage being equal to the first voltage.

4. The auxiliary power source system according to claim 3, characterized in that: The auxiliary power source system further comprises a third DC converter (9), an input end of the third DC converter (9) being electrically connected to the power distribution component (2), and an output end of the third DC converter (9) being electrically connected to the third load component (7).

5. The auxiliary power source system according to claim 4, characterized in that: The third load component (7) is an electromechanical brake component, which is used to perform a braking operation of the vehicle; wherein the third voltage is 48 volts.

6. The auxiliary power source system according to claim 5, characterized in that: The electromechanical brake assembly comprises a first electromechanical brake (71) and a second electromechanical brake (72), wherein the first electromechanical brake (71) is electrically connected to the second output end; and the second electromechanical brake (72) is electrically connected to the output end of the third DC converter (9).

7. The auxiliary power source system according to claim 1, characterized in that: The auxiliary power source system further comprises a first energy storage component (8), one end of the first energy storage component (8) being electrically connected between the first DC converter (3) and the first load component (5), and the other end of the first energy storage component (8) being grounded.

8. The auxiliary power source system according to claim 1, characterized in that: The auxiliary power source system further comprises a second energy storage component (10), the output end of which is electrically connected to the first load component (5), the second load component (6) and the third load component (7), respectively, and the second energy storage component is used to supply power to the first load component (5), the second load component (6) and the third load component (7) when the battery component is not started.

9. The auxiliary power source system according to claim 8, characterized in that: The input end of the second energy storage component (10) is electrically connected to at least one of the first DC converter (3) and the second DC converter (4) so ​​as to be electrically connected to the power distribution component (2) through the first DC converter (3) and / or the second DC converter (4).

10. The auxiliary power source system according to any one of claims 1 to 9, characterized in that: The auxiliary power source system also includes an integrated controller (11); the second DC converter (4) is integrated into the integrated controller (11).

11. A vehicle, characterized in that: The vehicle comprises the auxiliary power source system and the battery assembly (1) as claimed in any one of claims 1 to 10; The auxiliary power source system is electrically connected to the battery assembly (1).

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