CN111071047A

CN111071047A - Novel low-cost battery manual service switch

Info

Publication number: CN111071047A
Application number: CN201911354275.4A
Authority: CN
Inventors: 范大鹏; 李陈勇; 薛国正; 杨猛; 乔笑笑; 邓晓光
Original assignee: Zhejiang Hozon New Energy Automobile Co Ltd
Current assignee: Hozon New Energy Automobile Co Ltd
Priority date: 2019-12-25
Filing date: 2019-12-25
Publication date: 2020-04-28
Anticipated expiration: 2039-12-25
Also published as: CN111071047B

Abstract

The invention belongs to the technical field of electric automobiles, and particularly relates to a novel low-cost battery manual service switch which is used for controlling a battery of a whole automobile. The technical scheme of the invention not only realizes the function of the traditional MSD, but also reduces the design complexity and the material cost.

Description

Novel low-cost battery manual service switch

Technical Field

The invention belongs to the technical field of electric automobiles, and particularly relates to a novel low-cost battery manual service switch.

Background

The current new energy automobile battery generally adopts a high-voltage manual service switch, namely commonly called MSD, and the MSD designed at present needs additional fuses, and the matched fuses need to be made to be large, so that the design is complex, the cost is high, and the part quality is large; MSD is generally directly arranged on a battery pack shell, the requirement on waterproof and dustproof design is particularly high, the design difficulty and cost of the shell are increased, meanwhile, in the process of thermal diffusion, MSD is a weak link, gas and flame can emerge from the MSD, in the prior art, MSD is designed on a battery pack end plate, low-pressure MSD replaces high-pressure MSD, and the scheme still needs certain cost and waterproof and dustproof design requirements.

In view of the above technical problems, it is desirable to improve.

Disclosure of Invention

Based on the above-mentioned shortcomings in the prior art, the present invention provides a novel low-cost battery manual service switch.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a novel low-cost battery manual service switch for whole car battery control, whole car includes whole car fuse box, whole car high-pressure interlocking return circuit, the battery includes battery package high-pressure interlocking return circuit, battery manual service switch includes low pressure plug connector, high-pressure safety fuse, low pressure plug connector and battery package high-pressure interlocking return circuit and whole car high-pressure interlocking return circuit are connected to make battery package high-pressure interlocking return circuit concatenate in whole car high-pressure interlocking return circuit, high-pressure safety fuse concatenates and puts in order car high-pressure interlocking return circuit, high-pressure safety fuse arranges in whole car fuse box.

Preferably, the high-voltage safety fuse is provided with a mark.

Preferably, the identification of the high-voltage safety fuse is different from the identification of other fuses in the fuse box of the whole vehicle.

Preferably, the mark of the high-voltage safety fuse is one or a combination of a shape mark, a color mark, a text label and a text label.

Preferably, the life cycle of the high-voltage safety fuse is more than or equal to 25 times.

Preferably, a tool bin is arranged outside the fuse box of the whole vehicle, and a tool for disassembling the fuse box of the whole vehicle is pre-placed in the tool bin.

Preferably, the IP protection grade of the finished automobile fuse box is greater than or equal to IP 54.

Preferably, the battery further comprises a battery pack controller, and when the whole vehicle is in a running state, the battery pack controller controls the control level of the battery to be greater than the control level of the battery manual service switch.

Compared with the prior art, the invention has the beneficial effects that: the technical scheme of the invention not only realizes the function of the traditional MSD, but also reduces the design complexity and the material cost.

Drawings

FIG. 1 is a schematic diagram of a battery pack portion of a novel low-cost battery manual service switch according to a first embodiment of the present invention;

FIG. 2 is a partial schematic view of a vehicle fuse box of the novel low-cost battery manual service switch according to a first embodiment of the invention;

fig. 3 is a schematic diagram of a high-voltage safety fuse of the novel low-cost battery manual service switch according to an embodiment of the invention.

Wherein: 1. a battery pack; 2. a low voltage plug connector; 3. a high voltage safety fuse; 4. a battery pack high voltage interlock loop; 5. the whole vehicle fuse box; 6. a whole vehicle high-voltage interlocking loop; 31. identification of high voltage safety fuses.

Detailed Description

In order to more clearly illustrate the embodiments of the present invention, the following description will explain the embodiments of the present invention with reference to the accompanying drawings. It is obvious that the drawings in the following description are only examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.

The first embodiment is as follows:

as shown in fig. 1 to 3, the novel low-cost battery manual service switch of the present embodiment is used for controlling battery manual power-off of a whole vehicle, and replaces an MSD with a complex design, a high cost, and a large part mass, and includes a high-voltage safety fuse 3 and a low-voltage plug 2.

Specifically, the battery pack 1 comprises a high-voltage interlocking loop in the battery pack 1, the whole vehicle needs to be provided with a corresponding high-voltage interlocking loop or utilizes a self whole vehicle high-voltage interlocking loop 6, a wire harness of the battery pack high-voltage interlocking loop 4 and a wire harness of the whole vehicle high-voltage interlocking loop 6 are connected through a low-voltage plug connector 2, so that the battery pack high-voltage interlocking loop 4 is connected in series with the whole vehicle high-voltage interlocking loop 6, the whole vehicle high-voltage interlocking loop 6 is introduced into a whole vehicle fuse box, a high-voltage safety fuse 3 is arranged in the whole vehicle fuse box, and the high-voltage safety fuse 3 is connected in series with the whole.

The design of this embodiment replaces current MSD through the high-pressure safety fuse 3 in whole car fuse box 5, when needing to give whole car outage, can demolish whole car low pressure fuse box earlier through the instrument, just can directly see this high-pressure safety fuse 3. When the vehicle is powered off by a key or a key, the high-voltage safety fuse 3 can be pulled out, so that the purpose of disconnecting the high-voltage circuit is achieved. This high-pressure safety fuse 3 establishes ties into whole car high-pressure interlocking loop 6, guarantees a lot of plugs, and the whole life is pulled out and is inserted the cycle at least 25 times, marks special label simultaneously, easily discovers, moreover because whole car fuse box 5 is mostly arranged in the passenger cabin, for example near the instrument board, the IP grade requirement is very low, usually IP54 can, preferred, higher IP protection level also is suitable for.

In order to increase the use convenience, a tool bin is arranged outside the whole vehicle fuse box 5, tools for disassembling the whole vehicle fuse box 5 are pre-placed in the tool bin, and various spare fuses can be prevented from being arranged.

The mark 31 of the high-voltage safety fuse is different from marks of other fuses in the fuse box 5 of the whole vehicle, and can be one or a plurality of combinations of shape marks, color marks, character labels and character labels, for example, the marks of the other fuses in the fuse box 5 of the whole vehicle are common white shells and amperage marks, the high-voltage safety fuse 3 is a red shell or other colors different from white, the shell is larger or smaller or different from special-shaped shells of other fuse shells, the high-voltage safety fuse 3 is also provided with the character labels in series, and the prompt of 'extracting the fuse can cause the battery pack 1 to be powered on'.

In order to improve the safety of the whole vehicle, when the whole vehicle is in a running state, the control level of a battery pack controller BMU (battery pack controller) of a battery pack 1 for controlling a battery is greater than the control level of a battery manual service switch for controlling the battery, and when the whole vehicle or a battery pack high-voltage interlocking loop is disconnected for identification and disposal, a program for setting the battery pack controller BMU cannot immediately cut off the battery pack 1 if the vehicle is in the running state, and simultaneously identifies whether a main relay and a negative relay are bonded.

The invention replaces and cancels the design of high-voltage MSD by the high-voltage safety fuse 3 which is easy to identify in the fuse box, thereby reducing the complexity of the design and the material cost.

It should be noted that the above-mentioned only illustrates the preferred embodiments and principles of the present invention, and that those skilled in the art will be able to make modifications to the embodiments based on the idea of the present invention, and that such modifications should be considered as the protection scope of the present invention.

Claims

1. The utility model provides a novel low-cost battery manual service switch for whole car battery control, whole car includes whole car fuse box, whole car high pressure interlocking return circuit, the battery includes battery package high pressure interlocking return circuit, a serial communication port, battery manual service switch includes low pressure plug connector, high-pressure safety fuse, low pressure plug connector and battery package high pressure interlocking return circuit and whole car high pressure interlocking return circuit are connected to make battery package high pressure interlocking return circuit concatenate in whole car high pressure interlocking return circuit, high-pressure safety fuse concatenates and puts in order car high pressure interlocking return circuit, high-pressure safety fuse arranges in whole car fuse box.

2. The new low cost battery manual service switch as claimed in claim 1, wherein said high voltage safety fuse is provided with a logo.

3. The novel low cost battery manual service switch of claim 2, wherein the identification of said high voltage safety fuse is different from the identification of other fuses within the vehicle fuse box.

4. A novel low cost battery hand service switch as claimed in any of claims 2 or 3 wherein said high voltage safety fuse identification is one or more of a combination of shape identification, color identification, text label and text label.

5. The new low cost battery hand service switch as claimed in claim 1, wherein said high voltage safety fuse has a life cycle of 25 or more.

6. The novel low-cost battery manual service switch according to claim 1, wherein a tool bin is arranged outside the vehicle fuse box, and a tool for disassembling the vehicle fuse box is pre-placed in the tool bin.

7. The novel low cost battery manual service switch of claim 6, wherein the finished vehicle fuse box has an IP protection rating of greater than or equal to IP 54.

8. The novel low-cost battery manual service switch according to claim 1, wherein the battery further comprises a battery pack controller, and when the entire vehicle is in a driving state, the battery pack controller controls the control level of the battery to be greater than the control level of the battery manual service switch.