CN214083942U

CN214083942U - High voltage power distribution system

Info

Publication number: CN214083942U
Application number: CN202023096340.9U
Authority: CN
Inventors: 唐军; 陈爽; 传国强; 胡太强; 王阳
Original assignee: Chongqing Ganeng Electric Vehicle Technology Co ltd
Current assignee: Chongqing Ganeng Electric Vehicle Technology Co ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-08-31
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a high-voltage power distribution system, which is applied to new energy automobiles; the high-voltage power distribution system comprises a battery bracket, a battery pack and a power distribution box. The battery pack is detachably fixed in the battery bracket and used for providing power for the vehicle-mounted device. The block terminal detachably sets up in battery package upper surface, and with battery package electric connection. The block terminal is used for establishing the electric connection between battery package and the mobile unit and the slow charging device. The electrical box selectively establishes a first conductive path and a second conductive path to enable power to the on-board device. The first conductive path is electrically connected between the battery pack and the vehicle-mounted device, and the second conductive path is electrically connected between the battery pack and the slow charging device, so that the slow charging device is charged.

Description

High voltage power distribution system

Technical Field

The utility model relates to a high voltage distribution system especially relates to a high voltage distribution system of new forms of energy field.

Background

The electric automobile replaces oil with electricity, can realize zero emission and low noise, and is an important means for solving the problems of energy and environment. Along with the improvement of the cruising ability of a new energy vehicle, the electric automobile is favored by more users with the advantage of excellent environmental protection performance. A battery pack in an electric vehicle is typically integrated with a battery and a high voltage distribution box. The high voltage distribution box is used for managing the voltage in the battery pack. When the battery of the electric automobile needs to be replaced, the whole battery pack needs to be replaced. Because the weight of the battery and the weight of the high-voltage distribution box are both large, large power is needed during manual power replacement, and the power replacement operation is difficult. Meanwhile, when any one of the battery and the high-voltage distribution box goes wrong, the whole battery pack needs to be replaced at the same time, and maintenance cost is increased.

SUMMERY OF THE UTILITY MODEL

In view of this, there is a need for a high voltage power distribution system, which aims to solve the problems of difficult power switching operation and high maintenance cost caused by the excessive weight of the battery and the distribution box which are integrally designed in the prior art.

A high-voltage power distribution system is applied to a new energy automobile; the high voltage power distribution system includes:

a battery holder;

the battery pack is detachably fixed in the battery bracket and is used for providing power supply for the vehicle-mounted device; and

the distribution box is fixed on the battery bracket, is partially positioned on the upper surface of the battery pack and is electrically connected with the battery pack;

the distribution box is used for establishing electrical connection between the battery pack and the vehicle-mounted device and the slow charging device; the electrical box selectively establishing a first conductive path and a second conductive path; the first conducting path is electrically connected between the battery pack and the vehicle-mounted device to realize power supply to the vehicle-mounted device, and the second conducting path is electrically connected between the battery pack and the slow charging device to realize charging of the slow charging device.

Optionally, the battery pack has a negative terminal; the battery pack also comprises a battery module, a high-voltage circuit control module and a main negative relay; the main negative relay is used for establishing the electrical connection between the battery module and the negative terminal when the battery pack is in any one working state.

Optionally, the battery pack further has a positive terminal; the distribution box comprises a main positive relay connected with the distribution box; the main positive relay is electrically connected between the positive terminal and the vehicle-mounted device; the main positive relay is used for establishing electric connection between the positive terminal and the positive pole of the vehicle-mounted device when the battery pack is in a normal working state.

Optionally, the electrical box further comprises a pre-charge relay; the pre-charging relay is electrically connected between the positive terminal and the vehicle-mounted device; the pre-charging relay is used for establishing electric connection between the positive terminal and the positive electrode of the vehicle-mounted device when the battery pack is in a pre-charging state.

Optionally, the electrical box further comprises a pre-charge resistor; the pre-charging resistor is electrically connected between the pre-charging relay and the anode of the vehicle-mounted device.

Optionally, the power distribution box further comprises a slow charge relay; the slow charging relay is electrically connected between the positive terminal and the slow charging device; the slow charging relay is used for establishing electrical connection between the positive terminal and the positive electrode of the slow charging device when the slow charging relay is in a slow charging state.

Optionally, the battery pack has a positive terminal; the battery pack further includes a fuse; the fuse is electrically connected between the positive terminal and the battery module; the fuse is used for fusing by itself to disconnect the electrical connection between the battery module and the positive terminal when the current of the battery pack is abnormal.

Above-mentioned high voltage distribution system, through with the block terminal independently set up in the battery package is outside, has alleviateed the weight of battery package can make the user can easily realize right the battery package trades the electricity. Simultaneously, will the battery package with the structure of block terminal separation setting can only need change the structure of damage when any one appears damaging, has reduced cost of maintenance.

Drawings

Fig. 1 is a perspective view of a high voltage distribution system according to a preferred embodiment of the present invention.

Fig. 2 is a block schematic diagram of the high voltage power distribution system of fig. 1.

Description of the main elements

High voltage distribution system 1

Vehicle-mounted device 2

Slow charging device 3

Battery holder 10

Battery pack 20

Distribution box 30

Battery module 21

Negative terminal 201

Positive terminal 203

First high-voltage control module 23

Main and negative relay 24

Fuse 26

Main positive relay 31

Pre-charge relay 33

Pre-charge resistor 34

Slow charging relay 35

Second high pressure control module 50

The following detailed description of the invention will be further described in conjunction with the above-identified drawings.

Detailed Description

In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts shall belong to the protection scope of the present invention.

In the description of the embodiments of the present invention, it should be noted that, unless explicitly stated or limited otherwise, the term "connected" is to be interpreted broadly, and may be, for example, a fixed connection, a detachable connection, or an integral connection; may be mechanically connected, may be electrically connected or may be in communication with each other; they may be connected directly or indirectly through intervening elements, or may be connected through inter-element communication or may be in the interaction of two elements. The specific meaning of the above terms in the present invention can be immediately determined by a person of ordinary skill in the art according to the specific situation.

The terms "first", "second" and "third" etc. in the description of the invention and the above-mentioned drawings are used for distinguishing different objects and not for describing a particular order. Furthermore, the terms "comprises" and any variations thereof, are intended to cover non-exclusive inclusions.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The following describes a specific embodiment of the high-voltage distribution system 1 according to the present invention with reference to the drawings.

Please refer to fig. 1, which is a schematic perspective view of a high voltage distribution system 1 according to a preferred embodiment of the present invention. The high-voltage power distribution system 1 is applied to a new energy automobile (not shown). The utility model discloses an in at least one embodiment, new energy automobile can be pure electric automobile, also can be oil-electricity hybrid vehicle.

The high voltage power distribution system 1 is used to supply power to an in-vehicle device 2 (shown in fig. 2) and a slow charging device 3 (shown in fig. 2). The high voltage power distribution system 1 includes a battery support 10, a battery pack 20, and a distribution box 30. In at least one embodiment of the present invention, the vehicle-mounted device 2 may be a motor, an electronic control device, or the like, but not limited thereto. The slow charging device 3 may be an ac charger, but is not limited thereto. The high voltage power distribution system 1 is switchable between a quiescent state, a pre-charge operating state, a normal operating state, and a slow charge operating state. Wherein, in the static state, the electrical connection between the battery pack 20 and the distribution box 30 is disconnected. In the pre-charging operation state, the normal operation state, or the slow charging operation state, the battery pack 20 is electrically connected to the distribution box 30.

The battery holder 10 is substantially hollow and rectangular. The battery holder 10 is used for accommodating the battery pack 20 and fixing the distribution box 30 thereon.

The battery pack 20 has a substantially rectangular parallelepiped structure. The battery pack 20 includes at least one battery module 21. In at least one embodiment of the present invention, the battery pack 20 includes two battery modules 21. The two battery modules 21 are arranged coplanar in the horizontal direction. The battery pack 20 is detachably fixed in the battery holder 10 and is locked with the battery holder 10. In at least one embodiment of the present invention, the battery pack 20 may be fixed in the accommodating space of the battery holder 10 by screw locking, or may be fixed in the accommodating space of the battery holder 10 by snap-fit structure, but not limited thereto.

One end of the distribution box 30 is fixed to a side surface of the battery holder 10 and extends to an upper surface of the battery pack 20. The distribution box 30 may be electrically connected to the battery pack 20 through a connection wire (not shown).

Please refer to fig. 2, which is a block diagram of the high voltage distribution system 1. The battery pack 20 has a negative terminal 201 and a positive terminal 203. The battery pack 20 further includes a first high voltage control module 23 and a main negative relay 24. The first high-voltage control module 23 is used for switching the working state of the main negative relay 24. The main negative relay 24 is electrically connected between the battery module 21 and the negative terminal 201. The main negative relay 24 is used for establishing the electrical connection between the battery module 21 and the negative terminal 201 in a pull-in state.

The battery pack 20 further includes a fuse 26. The fuse 26 is electrically connected between the battery module 21 and the positive terminal 203. The fuse 26 is used to fuse itself to break the electrical connection between the battery module 21 and the positive terminal 203 when the current of the battery module 21 is abnormal.

The distribution box 30 includes a main positive relay 31, a pre-charge relay 33, a pre-charge resistor 34, and a slow-charge relay 35.

The main positive relay 31 is electrically connected between the positive terminal 203 and the in-vehicle device 2. The main positive relay 31 is configured to establish an electrical connection between the positive terminal 203 and a positive electrode of the onboard apparatus 2 when the distribution box 30 is in the normal operating state.

The pre-charge relay 33 is electrically connected between the positive terminal 203 and the in-vehicle device 2. The pre-charge relay 33 is configured to establish an electrical connection between the positive terminal 203 and a positive electrode of the in-vehicle device 2 when the distribution box 30 is in the pre-charge state.

The pre-charge resistor 34 is electrically connected between the pre-charge relay 33 and the in-vehicle device 2.

The slow charging relay 35 is electrically connected between the positive terminal 203 and the slow charging device 3. The slow charging relay 35 is configured to establish an electrical connection between the positive terminal 203 and the positive electrode of the slow charging device 3 when the distribution box 30 is in the slow charging state.

The high voltage power distribution system 1 further comprises a second high voltage control module 50.

The second high-voltage control module 50 is electrically connected to the main positive relay 31, the pre-charge relay 33, the pre-charge resistor 34 and the slow-charge relay 35, and is configured to control the main positive relay 31, the pre-charge relay 33, the pre-charge resistor 34 and the slow-charge relay 35 to switch between an attraction state and a disconnection state.

The working principle of the high-voltage distribution system 1 is as follows:

in the static state (that is, when the new energy automobile is not started), the first high-voltage control module 23 controls the main negative relay 24 to be in an off state, and the second high-voltage control module 50 controls the main positive relay 31, the pre-charge relay 33 and the slow-charge relay 35 to be in off states. The battery pack 20 is electrically disconnected from the distribution box 30.

In the pre-charging state (i.e., when the new energy automobile is just started), the first high-voltage control module 23 controls the main and negative relays 24 to be attracted, and the second high-voltage control module 50 controls the pre-charging relay 33 to be attracted, so that the battery pack 20 pre-charges the vehicle-mounted device 2.

In a normal working state (and when the new energy automobile completes the pre-charging operation), the first high-voltage control module 23 controls the main negative relay 24 to keep in an attraction state, the second high-voltage control module 50 controls the pre-charging relay 33 and the slow-charging relay 35 to be in a disconnection state, and controls the main positive relay 21 to be in the attraction state so as to establish the positive terminal 203 and the electric connection between the vehicle-mounted devices 2, and further provide voltage for the power supply of the vehicle-mounted devices 2.

In the charging state, the first high-voltage control module 23 controls the main negative relay 24 to keep the attraction state, the second high-voltage control module 50 controls the main positive relay 31 and the pre-charging relay 33 to be disconnected, and controls the slow charging relay 35 to be in the attraction state, so as to establish the positive terminal 203 and the electrical connection between the slow charging devices 3, and further to slowly charge the slow charging devices 3.

The above-mentioned high voltage distribution system 1, through will block terminal 30 independently set up in battery package 20 is outside, and will main positive relay 31 pre-charge relay 33 and slow charge relay 35 integrated set up in block terminal 30, alleviateed battery package 20's weight can make the user can easily realize right battery package 20 trades the electricity. Meanwhile, the structure that the battery pack 20 and the distribution box 30 are separately arranged can be replaced only when any one is damaged, and the maintenance cost is reduced.

It will be appreciated by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be taken as limiting the present invention, and that suitable modifications and variations of the above embodiments are within the scope of the invention as claimed.

Claims

1. A high-voltage power distribution system is applied to a new energy automobile; the method is characterized in that: the high voltage power distribution system includes:

a battery holder;

2. The high voltage power distribution system of claim 1, wherein the battery pack has a negative terminal; the battery pack also comprises a battery module, a high-voltage circuit control module and a main negative relay; the main negative relay is used for establishing the electrical connection between the battery module and the negative terminal when the battery pack is in any one working state.

3. The high voltage power distribution system of claim 1, wherein the battery pack further has a positive terminal; the distribution box comprises a main positive relay connected with the distribution box; the main positive relay is electrically connected between the positive terminal and the vehicle-mounted device; the main positive relay is used for establishing electric connection between the positive terminal and the positive pole of the vehicle-mounted device when the battery pack is in a normal working state.

4. The high voltage power distribution system of claim 3, wherein the power distribution box further comprises a pre-charge relay; the pre-charging relay is electrically connected between the positive terminal and the vehicle-mounted device; the pre-charging relay is used for establishing electric connection between the positive terminal and the positive electrode of the vehicle-mounted device when the battery pack is in a pre-charging state.

5. The high voltage power distribution system of claim 4, wherein the power distribution box further comprises a pre-charge resistor; the pre-charging resistor is electrically connected between the pre-charging relay and the anode of the vehicle-mounted device.

6. The high voltage power distribution system of claim 3, wherein the power distribution box further comprises a slow charge relay; the slow charging relay is electrically connected between the positive terminal and the slow charging device; the slow charging relay is used for establishing electrical connection between the positive terminal and the positive electrode of the slow charging device when the slow charging relay is in a slow charging state.

7. The high voltage power distribution system of claim 2, wherein the battery pack has a positive terminal; the battery pack further includes a fuse; the fuse is electrically connected between the positive terminal and the battery module; the fuse is used for fusing by itself to disconnect the electrical connection between the battery module and the positive terminal when the current of the battery pack is abnormal.