A battery heating film and a battery box water ingress detection device

A detection device and battery heating technology, applied in secondary battery testing, secondary battery, secondary battery repair/maintenance, etc., can solve problems such as stress breaking, short circuit, high vibration breaking probability of wires, etc., to prevent wear and tear problems, ensuring service life, and simplifying the effect of wiring harness layout

Active Publication Date: 2021-07-23
LINKDATA NEW ENERGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The first wire and the second wire of the above structure are arranged around the circumference of the battery side wall or the bottom surface. Further, the wire is bonded to the insulating layer of the battery case. The technical defect lies in: the use of the battery case and the power battery therein There is vibration in the process, and the wire has a high probability of breaking. If the second wire is disconnected, the water inlet voltage data cannot be measured; the wire break has the risk of being lapped to the conductive element of the battery and causing a short circuit; the wiring harness in the battery box is complicated.
[0005] CN 203869822 U sets the detection wire on the surface of the PCB substrate, the technical defect is: the PCB substrate material is very brittle, and there is a probability of breaking under stress; the inner side of the battery box is a conductive shell, and the PCB substrate is provided with a water inductive sensor circuit The side facing the power battery is set, and the friction between the power battery and the PCB substrate will cause the wear of the detection wire. The above two factors can cause the battery detection system to fail

Method used

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  • A battery heating film and a battery box water ingress detection device
  • A battery heating film and a battery box water ingress detection device
  • A battery heating film and a battery box water ingress detection device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Such as figure 1 As shown, the battery heating film in Example 1 is rectangular, and the battery heating film includes a heating wire 1 and an insulating coating layer 2 arranged outside the heating wire 1, and also includes a detection wire 3 arranged in the insulating coating layer 2, and the battery The heating film is provided with two notches 4 for cutting off the detection wire, and the positive and negative terminals of the heating wire 1 and the detection wire 3 are arranged on both sides of the battery heating film.

Embodiment 2

[0071] Such as figure 2 As shown, Embodiment 2 is based on Embodiment 1. In Embodiment 2, the two detection wires 3 are arranged on one side of the heating wire 1 in the battery heating film, and the gaps 4 of the two heating wires are located on the same side of the battery heating film.

Embodiment 3

[0073] Such as Figure 3-4 As shown, embodiment 3 is based on embodiment 1, the difference is that in embodiment 3, three open-loop detection wires 3 arranged in sequence from outside to inside are provided, and the leading ends of heating wire 1 and detection wire 3 are drawn out through the open loop. A notch 4 for cutting off the detection wire 3 is provided on the detection wire 3 of the outer ring, and a through hole 5 for cutting off the detection wire 3 is provided on the two detection wires 3 located in the outer ring.

[0074] A liquid seepage groove 6 is arranged on the surface of the insulating coating layer, one end of the liquid seepage groove 6 is located on the outer periphery of the battery heating membrane, and the other end of the liquid seepage groove 6 communicates with the through hole 5 .

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Abstract

The invention discloses a battery heating film, which includes a heating wire and an insulating coating layer arranged outside the heating wire, and also includes a detection wire arranged in the insulating coating layer, and the battery heating film is provided with a through hole for cutting off the detection wire and / or notch. The battery heating film is provided with detection wires, and the battery heating film is provided with through holes and / or gaps that cut off the detection wires, and the detection wires exposed at the through holes and / or gaps can be connected by water inflow to realize battery heating. The water ingress detection in the box body has long service life; the invention also discloses a water ingress detection device in the battery box body.

Description

technical field [0001] The invention relates to the technical field of lithium battery production, in particular to a battery heating film and a water inflow detection device for a battery box. Background technique [0002] The setting of the power battery and the battery box in the use state, the sealing performance of the battery box directly affects the working status of the power battery. If the battery box is flooded, it may cause the power battery to fail, and then affect the operation of the connected equipment. . [0003] The battery water inlet detection device in the prior art includes the following two types according to the principle: first, the temperature of the battery will drop suddenly by using the water inlet, and whether the water inlet is monitored by using the temperature, as described in CN106197854A; Conductivity conduction detection wire or water inflow sensor, and judge whether the battery box has water ingress by monitoring the voltage and current ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M10/42H01M10/48
CPCH01M10/4285H01M10/48Y02E60/10
Inventor 董晓波杨六香王进夏咸兵
Owner LINKDATA NEW ENERGY CO LTD
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