A multifunctional low-voltage power distribution box for an electric vehicle

A low-voltage power distribution, electric vehicle technology, applied in vehicle components, circuits or fluid pipelines, transportation and packaging, etc., can solve problems such as mutual interference of electrical equipment, distribution of current, and inability to meet needs, and achieve impact resistance. Weak, weaken mutual interference, high control precision effect

Inactive Publication Date: 2017-07-04
CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] With the development of society and the promotion of national policies, there are more and more companies and models of electric vehicles, especially in the field of commercial vehicles. Due to cost control and other reasons, the existing circuit system has been unable to meet the requirements of more sophisticated electrical equipment. The low-voltage power distribution box for the chassis already exists in the field of commercial vehicles. The main purpose is to distinguish the power supply of high-power electrical equipment from the power supply of cab electrical equipment. However, in the era of electric vehicles, its functions are far from being able to meet According to the trend of high integration of electrical equipment, such a multi-functional low-voltage power distribution box is specially designed
[0003] At present, due to the particularity of the location of the low-voltage battery of the existing commercial vehicle, many electrical equipment and the low-voltage battery are in different positions, and the low-voltage power distribution box is only used for power distribution and circuit protection, which cannot be actively monitored and controlled. The voltage and current of the low-voltage battery; unable to adjust the output current state, unable to limit the electromagnetic interference of the power supply and the circuit; unable to accurately distribute the current, resulting in excessive load on a certain circuit or serious interference between electrical equipment on a certain circuit

Method used

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  • A multifunctional low-voltage power distribution box for an electric vehicle
  • A multifunctional low-voltage power distribution box for an electric vehicle

Examples

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specific Embodiment approach

[0021] figure 1 It is shown that a specific embodiment of the present invention is: a multifunctional low-voltage power distribution box for an electric vehicle, including a vehicle controller VCU, wherein the vehicle controller VCU is connected with a battery, a converter, and a power distribution unit ; The power distribution unit includes a current detection unit, an electromagnetic interference shielding unit, and a control relay connected in sequence; the current detection unit is also connected with the storage battery and the vehicle controller VCU respectively, and the current detection unit and the electromagnetic interference shielding unit are also connected A manual power switch K is connected, and the manual power switch is used as the main power supply of the vehicle; the current detection unit is connected to the electromagnetic interference shielding unit through a parallel safety plate, and the safety plate is connected in parallel with the power switch K, and ...

Embodiment 2

[0032] This example is basically the same as Example 1, the difference is:

[0033] In this example, the power switch K is an electromagnetic power switch controlled by a key switch, which is used as the main power supply of the vehicle;

[0034] In the same way, the distribution of the main wiring harness of the power distribution unit: first-order distribution, two power supplies are distributed first, and one is the BATT power supply not controlled by the power switch, which is used for some ABS, VCU, double flashing of danger alarm, instrument and CLOCK power supply and some The sensor is used; another electromagnetic power switch controlled by the key switch is used as the main power supply of the vehicle; second-order distribution: the BATT power filter unit is allocated into two circuits of BATT1 and BATT SINGLE, which are used for normal power and signal normal power respectively; V3 It is distributed into four circuits, namely ACC, ON, SINGLE and BATT2, among which BA...

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Abstract

The invention discloses a multifunctional low-voltage power distribution box for an electric vehicle, which includes a vehicle controller (VCU), wherein the vehicle controller (VCU) is connected with a storage battery, a converter, and a power distribution unit; the power distribution unit The unit includes a current detection unit, an electromagnetic interference shielding unit, and a control relay connected in sequence; the current detection unit is also connected to the battery and the vehicle controller (VCU) respectively, and a power supply is also connected between the current detection unit and the electromagnetic interference shielding unit The switch (K); the vehicle controller (VCU) also includes a voltage detection unit connected to it, and the voltage detection unit is connected to the positive and negative poles of the battery. The power distribution box distinguishes the power supply of high-power electrical equipment and cab electrical equipment, reduces excessive circuit load or mutual interference of electrical equipment, better distributes power, and is more conducive to circuit protection.

Description

technical field [0001] The invention relates to a power distribution box, in particular to a multifunctional low-voltage power distribution box used in electric vehicles. Background technique [0002] With the development of society and the promotion of national policies, there are more and more companies and models of electric vehicles, especially in the field of commercial vehicles. Due to cost control and other reasons, the existing circuit system has been unable to meet the requirements of more sophisticated electrical equipment. The low-voltage power distribution box for the chassis already exists in the field of commercial vehicles. The main purpose is to distinguish the power supply of high-power electrical equipment from the power supply of cab electrical equipment. However, in the era of electric vehicles, its functions are far from being able to meet According to the trend of high integration of electrical equipment, such a multi-functional low-voltage power distri...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60R16/023
CPCB60R16/0238
Inventor 刘粤朱长明黄龙郭青林
Owner CHENGDU RAJA NEW ENERGY AUTOMOTIVE TECH CO LTD
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