CN215894874U

CN215894874U - Alarm device for high-voltage interlocking detection of power battery system

Info

Publication number: CN215894874U
Application number: CN202121770817.9U
Authority: CN
Inventors: 吴静; 施鑫隆; 张萍; 罗锋; 邓建明; 龚循飞
Original assignee: Jiangxi Isuzu Motors Co Ltd
Current assignee: Jiangxi Isuzu Motors Co Ltd
Priority date: 2021-07-30
Filing date: 2021-07-30
Publication date: 2022-02-22
Anticipated expiration: 2031-07-30

Abstract

According to the alarm device for high-voltage interlocking detection of the power battery system, provided by the embodiment of the utility model, the test points are arranged at the two ends of the high-voltage loop electric appliance unit, when the high-voltage loop is in a communicated state, the test points on the high-voltage loop electric appliance unit are connected in pairs and are connected with the battery management system to form the low-voltage test loop, so that the low-voltage test loop and the high-voltage loop are in linkage relation, namely when the high-voltage loop is in poor connection and contact, the low-voltage test loop is also in open circuit, and at the moment, the battery management system outputs a fault signal, so that a passenger can immediately find that the high-voltage loop is in poor contact, and the safety of the vehicle and the passenger is ensured.

Description

Alarm device for high-voltage interlocking detection of power battery system

Technical Field

The utility model relates to the field of power batteries, in particular to an alarm device for high-voltage interlocking detection of a power battery system.

Background

In order to find the contact problem in time, the interlocking function of the high-voltage connector is introduced earlier to ensure the connection of the high-voltage circuit, but most of the methods adopt a physical secondary locking mechanism of the connector to ensure that the connector meets the reliable connection from the aspect of physical mechanisms.

The new forms of energy high-voltage circuit connector adopts mechanical secondary locking mechanism, though can guarantee connector grafting effect at to a great extent, guarantees that the connector pegs graft and targets in place, nevertheless can not accomplish complete good contact to the contact nature of connector internal terminal, when the disconnection appears in connector internal terminal, the passenger can't directly judge, and then when making the vehicle break down, can't in time feed back, very big influence vehicle and passenger's safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide an alarm device for high-voltage interlocking detection of a power battery system, which is used for solving the technical problem that the existing new energy high-voltage loop connector cannot be judged and found in time when poor contact connection exists.

In order to achieve the purpose, the utility model adopts the technical scheme that: the utility model provides an alarm device that power battery system high pressure interlocking detected, alarm device that power battery system high pressure interlocking detected includes:

high-voltage circuit electrical apparatus unit and battery management system, high-voltage circuit electrical apparatus unit includes motor controller, high-voltage distribution box, battery protection device, wherein battery management system the motor controller high-voltage distribution box and battery protection device's both ends all are provided with the test point, work as battery protection device the motor controller when high-voltage circuit between the high-voltage distribution box communicates, battery management system the motor controller the test point interconnect at high-voltage distribution box and battery protection device both ends makes battery management system the motor controller high-voltage distribution box and battery protection device form low pressure test circuit.

In one embodiment, the high voltage circuit connection points on the motor controller, the high voltage distribution box and the battery protection device include springs and connection pieces, the connection pieces are fixed on the high voltage circuit electrical appliance units through the springs, the test points are rigid connection pieces, and when the high voltage circuit is in an off state, the connection pieces are closer to the adjacent high voltage circuit electrical appliance units than the end portions of the test points.

In one embodiment, an on-off test device is arranged on a test point between adjacent high-voltage loop units, the on-off test device comprises a test lamp, two ends of the test lamp are electrically connected with the test point on the connected high-voltage loop unit through a lead, and when the adjacent high-voltage loop units are disconnected, the test lamp is turned on.

In one embodiment, the battery management system sends the detection result out through a bus, and a diagnosis fault code is sent out by the CAN.

In one embodiment, the alarm device for detecting the high-voltage interlocking of the power battery system can be applied to a high-voltage loop of a light-truck electric vehicle.

One or more technical solutions described above in the embodiments of the present invention have at least the following technical effects or advantages:

Drawings

FIG. 1 is a schematic structural diagram of an alarm device for detecting high-voltage interlocking of a power battery system provided by the utility model;

fig. 2 is a schematic structural diagram of the high-voltage circuit in the figure when the high-voltage circuit is disconnected.

Wherein the respective reference numerals are as follows:

1. a high voltage loop electrical unit; 2. a battery management system; 3. testing points; 4. an on-off test device; 5. a high pressure loop connection point; 11. a motor controller; 12. a high voltage distribution box; 13. a battery protection device.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the utility model and are not to be construed as limiting the utility model.

In the description of the present invention, it is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

Referring to fig. 1 to 2, an embodiment of the present application provides an alarm device for detecting high-voltage interlock of a power battery system, including a motor controller 11, a high-voltage distribution box 12, and a battery protection device 13, where test points 3 are disposed at two ends of the battery management system 2, the motor controller 11, the high-voltage distribution box 12, and the battery protection device 13, and when a high-voltage loop among the battery protection device 13, the motor controller 11, and the high-voltage distribution box 12 is communicated, the test points 3 at two ends of the battery management system 2, the motor controller 11, the high-voltage distribution box 12, and the battery protection device 13 are connected to each other, so that the battery management system 2, the motor controller 11, the high-voltage distribution box 12, and the battery protection device 13 form a low-voltage test loop. Through setting up test point 3 at the both ends of high-pressure return circuit electrical apparatus unit 1, when the high-pressure return circuit is in the connected state, two liang link to each other between the test point 3 on the high-pressure return circuit electrical apparatus unit 1, and connect battery management system 2, form the low pressure test return circuit, and then make to have the linkage relation between low pressure test return circuit and the high-pressure return circuit, when the high-pressure return circuit appears connecting contact failure promptly, the open circuit phenomenon appears in the low pressure test return circuit equally, at this moment, battery management system 2 exports fault signal, make the passenger can find immediately that the high-pressure return circuit has contact failure phenomenon, guarantee vehicle and passenger's safety.

In one embodiment, the high voltage circuit connection points 5 on the motor controller 11, the high voltage distribution box 12 and the battery protection device 13 comprise springs and connection pieces, the connection pieces are fixed on the high voltage circuit electrical unit 1 through the springs, the test points 3 are rigid connection pieces, and when the high voltage circuit is in an off state, the connection pieces are closer to the adjacent high voltage circuit electrical unit 1 than the end parts of the test points 3. Because the high-voltage loop connecting points 5 are more outstanding, when the low-voltage testing loop is in a communicated state, the high-voltage loop connecting points 5 are tightly attached, the connecting pieces are more tightly connected under the action of the elastic force of the springs, and when the high-voltage loop is disconnected, the connection between the testing points 3 is necessarily disconnected firstly, so that the sensitivity and the reliability of the low-voltage testing loop are improved.

In one embodiment, the test point 3 between the adjacent high-voltage loop units is provided with an on-off test device 4, the on-off test device 4 comprises a test lamp, two ends of the test lamp are electrically connected with the test point 3 on the connected high-voltage loop unit through a lead, and when the adjacent high-voltage loop units are disconnected, the test lamp is turned on. When the high-voltage circuit of a certain department appears breaking off, lead to connecting between the test point 3 of this department and break off, lead to on the test lamp that is short-circuited establishes ties to low pressure test circuit originally, and then test lamp work shines, and suggestion personnel high-voltage circuit concrete disconnection position appears in which place to in order to make accurate quick maintenance to high-voltage circuit.

In one embodiment, the battery management system 2 sends the detection result out through the bus, and the CAN sends out a diagnosis fault code.

In one embodiment, the alarm device for detecting the high-voltage interlocking of the power battery system can be applied to a high-voltage loop of a light truck electric vehicle.

The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The utility model provides an alarm device that power battery system high pressure interlocking detected which characterized in that, alarm device that power battery system high pressure interlocking detected includes:

2. The warning device for detecting the high-voltage interlocking of the power battery system according to claim 1, wherein:

the high-voltage circuit connecting point on the motor controller, the high-voltage distribution box and the battery protection device comprises a spring and a connecting sheet, the connecting sheet is fixed on the high-voltage circuit electric appliance unit through the spring, the test point is a rigid connecting sheet, and when the high-voltage circuit is in a disconnected state, the connecting sheet is compared with the end part of the test point, which is closer to the adjacent high-voltage circuit electric appliance unit.

3. The warning device for detecting the high-voltage interlocking of the power battery system according to claim 1, wherein:

the on-off testing device is arranged on the testing point between the adjacent high-voltage loop units and comprises a testing lamp, two ends of the testing lamp are electrically connected with the testing point on the connected high-voltage loop unit through a conducting wire, and when the adjacent high-voltage loop units are disconnected, the testing lamp is turned on.

4. The warning device for detecting the high-voltage interlocking of the power battery system according to claim 1, wherein:

the battery management system sends out the detection result through the bus, and the CAN sends out a diagnosis fault code.

5. The warning device for detecting the high-voltage interlocking of the power battery system according to claim 1, wherein:

the alarm device for the high-voltage interlocking detection of the power battery system can be applied to a high-voltage loop of a light-truck electric vehicle.