Vehicle multi-voltage platform coexistence system, power supply system and passenger car

Abstract

The utility model discloses a vehicle multi-voltage platform coexistence system, a power supply system and a passenger car. The vehicle multi-voltage platform coexistence system comprises a first battery and a second battery, the cathode of the first battery is grounded, the anode is connected with the cathodes of the first voltage electric device and the second battery, the anode of the second battery is connected with the second voltage electric device, and both the first voltage electric device and the second voltage electric device are grounded. And the power supply requirements of 24V electric devices and 12V electric devices on a vehicle can be met.

Description

Technical Field

[0001] The utility model relates to the technical field, and in particular to a vehicle-used multi-voltage platform coexistence system, a power supply system and a passenger car. Background Art

[0002] The statements in this section merely provide background technical information related to the present invention and do not necessarily constitute prior art.

[0003] The voltage platform of the bus electronic control system is generally DC24V (hereinafter referred to as "24V" is direct current), and the DC24V is used to power the 24V electrical components in the vehicle. However, many buses, including the chassis and complete vehicles exported overseas, are equipped with 12V electrical components, such as lamps, audio-visual systems, PLC control modules, etc. In order to power the 12V electrical components, the traditional power distribution method is to configure a high-power power converter to convert the 24V of the vehicle into 12V voltage to power the 12V electrical components. However, if the 12V load power of the vehicle is large, this electronic control method requires a large power converter, which is very expensive. The larger the power of the power converter, the larger the volume, which is not suitable for the limited installation space of the vehicle. In addition, the power converter has low energy conversion efficiency and more power loss, resulting in high cost and high energy consumption of the vehicle. Utility Model Content

[0004] In order to solve the above problems, the utility model proposes a vehicle multi-voltage platform coexistence system, a power supply system and a passenger car, which can realize simultaneous power supply for second voltage electrical devices and first voltage electrical devices without the need for a power converter.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] In a first aspect, a multi-voltage platform coexistence system for a vehicle is proposed, comprising a first battery and a second battery;

[0007] The negative electrode of the first battery is grounded, and the positive electrode is respectively connected to the first voltage electric device and the negative electrode of the second battery, the positive electrode of the second battery is connected to the second voltage electric device, and both the first voltage electric device and the second voltage electric device are grounded.

[0008] Furthermore, the positive electrode of the first battery is connected to the first terminal, the first terminal is connected to the second terminal, the second terminal is connected to the negative electrode of the second battery, the positive electrode of the second battery is connected to the third terminal, the second terminal is connected to the fourth terminal, the fourth terminal is connected to the first voltage electrical device, the third terminal is connected to the fifth terminal, and the fifth terminal is connected to the second voltage electrical device.

[0009] Furthermore, all the wiring terminals are placed in the distribution box.

[0010] Furthermore, a power balancer is connected in series between the positive electrode of the first battery and the positive electrode of the second battery.

[0011] Further, the ground terminal of the power balancer is connected to the negative electrode of the first battery.

[0012] Furthermore, the first terminal is also connected to the sixth terminal, and the sixth terminal is connected to the power balancer; the fifth terminal is also connected to the seventh terminal, and the seventh terminal is connected to the eighth terminal, and the eighth terminal is connected to the power balancer.

[0013] Further, a first fuse is connected in series between the first battery and the first voltage electrical device;

[0014] A second fuse is connected in series between the second battery and the second voltage electrical device.

[0015] Further, a first switch is connected in series between the first battery and the first voltage electrical device;

[0016] A second switch is connected in series between the second battery and the second voltage device.

[0017] In a second aspect, a vehicle power supply system is proposed, including a vehicle multi-voltage platform coexistence system proposed in the first aspect.

[0018] In a third aspect, a passenger bus is proposed, including a vehicle-use multi-voltage platform coexistence system proposed in the first aspect.

[0019] Compared with the prior art, the beneficial effects of the utility model are:

[0020] 1. The utility model can realize power supply for the second voltage electrical device and the first voltage electrical device at the same time without providing a power converter through the connection circuit between two batteries and the second voltage electrical device and the first voltage electrical device.

[0021] 2. The utility model expands the number of poles by providing various connection terminals, thereby achieving the connection requirement of connecting two or more cables at one point of the cable.

[0022] 3. The utility model is provided with a power balancer, which can balance the voltage between the two batteries, ensuring that the life of the two batteries and the power distribution safety of the whole vehicle will not be affected due to uneven discharge.

[0023] 4. The utility model provides a fuse on the connection circuit between each electrical component and the battery to protect each electrical component.

[0024] Advantages of additional aspects of the present invention will be partially given in the following description, and partially become apparent from the following description, or be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The drawings in the specification, which constitute a part of the present application, are used to provide further understanding of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute improper limitations on the present application.

[0026] Figure 1 A circuit schematic diagram of the system disclosed in the embodiment;

[0027] Figure 2 The following is a schematic diagram of circuit connections of a system disclosed in an embodiment. DETAILED DESCRIPTION

[0028] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0029] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0030] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0031] Example 1

[0032] In this embodiment, a multi-voltage platform coexistence system for a vehicle is disclosed, such as Figure 1 , Figure 2 As shown, it includes a first battery and a second battery;

[0033] The negative electrode of the first battery is grounded, and the positive electrode is respectively connected to the first voltage electric device and the negative electrode of the second battery, the positive electrode of the second battery is connected to the second voltage electric device, and both the first voltage electric device and the second voltage electric device are grounded.

[0034] Specifically, the negative electrode of the first battery is grounded by connecting it to a nearby ground.

[0035] The negative electrode of the first battery is grounded, and the positive electrode is connected to the first voltage electrical device and the negative electrode of the second battery respectively, the positive electrode of the second battery is connected to the second voltage electrical device, and both the first voltage electrical device and the second voltage electrical device are grounded.

[0036] Since the commonly used electrical devices in existing vehicles are 12V electrical devices and 24V electrical devices, when the first voltage electrical device is a 12V electrical device and the second voltage electrical device is a 24V electrical device, the first battery and the second battery are both 12V batteries, so that the 12V electrical device can be powered by the 12V first battery, and a 24V voltage is generated by connecting the first battery and the second battery in series to power the 24V electrical device.

[0037] In order to protect the electrical device, a first fuse is connected in series between the first battery and the first voltage electrical device; and a second fuse is connected in series between the second battery and the second voltage electrical device.

[0038] The insurance values ​​of the first fuse and the second fuse are determined according to the specific load size.

[0039] In addition, in order to realize the control of power supply on and off of the electrical device, the present embodiment further connects a first switch in series between the first battery and the first voltage electrical device, and connects a second switch in series between the second battery and the second voltage electrical device. The on and off of the corresponding power supply circuit is controlled by the first switch and the second switch.

[0040] Preferably, the first fuse is arranged between the first voltage electrical device and the first switch, and the second fuse is arranged between the second voltage electrical device and the second switch.

[0041] In order to balance the voltage between the first battery and the second battery, this embodiment also connects a power balancer in series between the positive electrode of the first battery and the positive electrode of the second battery. The power balancer detects the voltage difference between the two batteries and charges the low-voltage battery in real time to meet the power supply requirements of the two voltage electrical devices and ensure that the two batteries will not be affected by uneven discharge. Life and vehicle power distribution safety.

[0042] In addition, the ground terminal of the power balancer is connected to the negative electrode of the first battery.

[0043] Fuses are arranged between the first battery and the power balancer, and between the second battery and the power balancer, so as to provide protection for the first battery and the second battery.

[0044] In specific implementation, the power balancer uses a 24V / 12V power balancer, which is an existing conventional component and can be selected according to specific needs. For example, the power balancer can use a power balancer of model VoltMaster65-80.

[0045] In this embodiment, all components are connected via cables.

[0046] Since the positive and negative poles of the battery are both connected in a conical manner, one pole can only be connected to one cable. In order to meet the requirement of connecting two cables at both ends of the battery in this embodiment, this embodiment develops a distribution box to lead out the positive and negative poles of the battery through cables, expands the number of wiring terminals, and realizes the circuit connection of this embodiment.

[0047] like Figure 2 As shown, the positive electrode of the first battery is connected to the first terminal, the first terminal is connected to the second terminal, the second terminal is connected to the negative electrode of the second battery, the positive electrode of the second battery is connected to the third terminal, the second terminal is connected to the fourth terminal, the fourth terminal is connected to the first voltage electrical device, the third terminal is connected to the fifth terminal, and the fifth terminal is connected to the second voltage electrical device.

[0048] The first connecting terminal is also connected to the sixth connecting terminal, and the sixth connecting terminal is connected to the power balancer; the fifth connecting terminal is also connected to the seventh connecting terminal, and the seventh connecting terminal is connected to the eighth connecting terminal, and the eighth connecting terminal is connected to the power balancer.

[0049] All the wiring terminals of this embodiment are placed in the distribution box, and the distribution box provides protection for the connection at each wiring terminal.

[0050] Preferably, the fourth connecting terminal is connected to the first switch, and the fifth connecting terminal is connected to the second switch.

[0051] The present embodiment discloses a vehicle multi-voltage platform coexistence system, which can realize power supply to 12V electrical components and 24V electrical components at the same time, meet the power supply requirements of 12V electrical components and 24V electrical components, abandon the conventional electric control power distribution method through DC24V to DC12V high-power power converter, save installation space, reduce cost and energy consumption of the whole vehicle; use the power equalizer to automatically balance the voltage between the two batteries, avoid the circuit failure of the whole vehicle due to uneven discharge of the two batteries.

[0052] Example 2

[0053] In this embodiment, a vehicle power supply system is disclosed, including a vehicle multi-voltage platform coexistence system disclosed in Embodiment 1.

[0054] Example 3

[0055] In this embodiment, a passenger car is disclosed, including a vehicle multi-voltage platform coexistence system disclosed in Embodiment 1.

[0056] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

[0057] Although the above describes the specific implementation methods of the utility model in combination with the accompanying drawings, it is not intended to limit the scope of protection of the utility model. Technical personnel in the relevant field should understand that on the basis of the technical solution of the utility model, various modifications or deformations that can be made by technical personnel in this field without creative work are still within the scope of protection of the utility model.

Claims

1. A multi-voltage platform coexistence system for a vehicle, characterized in that: including a first battery and a second battery; The negative electrode of the first battery is grounded, the positive electrode is connected to the first voltage electric device and the negative electrode of the second battery respectively, the positive electrode of the second battery is connected to the second voltage electric device, and the first voltage electric device and the second voltage electric device are both grounded; The positive electrode of the first battery is connected to the first terminal, the first terminal is connected to the second terminal, the second terminal is connected to the negative electrode of the second battery, the positive electrode of the second battery is connected to the third terminal, the second terminal is connected to the fourth terminal, the fourth terminal is connected to the first voltage electrical device, the third terminal is connected to the fifth terminal, and the fifth terminal is connected to the second voltage electrical device; A power balancer is connected in series between the positive electrode of the first battery and the positive electrode of the second battery; The first connecting terminal is also connected to the sixth connecting terminal, and the sixth connecting terminal is connected to the power balancer; the fifth connecting terminal is also connected to the seventh connecting terminal, and the seventh connecting terminal is connected to the eighth connecting terminal, and the eighth connecting terminal is connected to the power balancer.

2. The vehicle multi-voltage platform coexistence system according to claim 1, characterized in that: All wiring terminals are placed in the distribution box.

3. The vehicle multi-voltage platform coexistence system according to claim 1, characterized in that: The ground terminal of the power balancer is connected to the negative electrode of the first battery.

4. The vehicle multi-voltage platform coexistence system as claimed in claim 1, characterized in that: A first fuse is connected in series between the first battery and the first voltage electrical device; A second fuse is connected in series between the second battery and the second voltage electrical device.

5. The vehicle multi-voltage platform coexistence system as claimed in claim 1, characterized in that: A first switch is connected in series between the first battery and the first voltage electrical device; A second switch is connected in series between the second battery and the second voltage electric device.

6. A vehicle power supply system, characterized in that: A vehicle multi-voltage platform coexistence system comprising the one described in any one of claims 1-5.

7. A passenger car, characterized in that: A vehicle multi-voltage platform coexistence system comprising the one described in any one of claims 1-5.

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