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Compact battery cut-off unit

A cut-off unit, compact technology, applied in the direction of electrical components, secondary batteries, battery pack components, etc., can solve the problems that the acquisition accuracy of the Hall sensor cannot meet the requirements, occupies a large space, and the battery cut-off unit has no active heat dissipation, etc.

Active Publication Date: 2019-04-19
ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The disadvantage of the existing technology is that it occupies a large space, and the acquisition accuracy of the open-loop current Hall sensor cannot meet the requirements, which can only be around 1%-2%. In the high-current circuit, the heat generation is serious, and there is no active heat dissipation inside the battery cut-off unit, resulting in high local temperature, which affects the reliability of the system; due to the space requirements of the contactor using a ceramic cavity, the size of the contactor is also limited. larger

Method used

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Embodiment Construction

[0019] Such as Figures 1 to 4 As shown, the present invention provides a compact battery cut-off unit, which includes: an upper case 1, a lower case 3, and a high-voltage component 2, wherein: the high-voltage component 2 includes: a main contactor, an auxiliary contactor, a pre-charger Resistance, loop fuse, and current sensor; the current sensor is a Hall-type current sensor and a closed-loop current sensor, and its current acquisition accuracy can reach within 5‰.

[0020] As a further improvement, the high-voltage component 2 constitutes a main circuit and a pre-charging circuit.

[0021] As a further improvement, the base of the lower case 3 has four circular fixing holes, and the fixing holes are fixedly connected with the fixing plate inside the battery pack through bolts. Realize the fixation of the entire battery cut-off unit.

[0022] As a further improvement, the upper housing 1 and the lower housing 3 are clamped and fixedly connected via buckles 4 and buckle fi...

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Abstract

A compact battery cut-off unit comprises an upper shell body, a lower shell body and a high-voltage component, wherein the high-voltage component comprises a main contactor, an auxiliary contactor, aprecharge resistor, a loop fuse and a current sensor; and the current sensor is a Hall-type current sensor and is a closed-loop current sensor, and its current acquisition precision can be within 0.5%. The compact battery cut-off unit developed in the invention is compact in design, meets the space requirements, and adopts the high-precision Hall current sensor to ensure current acquisition precision.

Description

technical field [0001] The present invention relates to a compact battery disconnect unit. Background technique [0002] With the continuous upgrade and adjustment of new energy subsidy policies, the energy density of iEV6EL batteries continues to increase. In order to arrange more batteries, the space for electrical components is getting smaller and smaller, and it is necessary to arrange more compact electrical components. In order to ensure the accuracy of current collection, high-precision current sensors are gradually being used by major new energy automobile companies. [0003] The technology related to the present invention is a battery disconnect unit. At present, the size of the battery cut-off unit is large, and it takes up a lot of space in the battery pack. More low-cost open-loop Hall current sensors or more reasonable-priced shunt solutions are used; at the same time, ceramic-sealed contactors are often used as auxiliary contactors. [0004] The disadvantage...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/42H01M10/48H01M2/10H01M2/20H01M50/244H01M50/249H01M50/569
CPCH01M10/4257H01M10/486H01M2010/4271H01M50/20H01M50/50Y02E60/10
Inventor 姜点双李申申李忠刘平
Owner ANHUI JIANGHUAI AUTOMOBILE GRP CORP LTD
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