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Battery size measurement method, device and equipment and storage medium

A measurement method and battery technology, applied in the direction of measuring devices, optical devices, instruments, etc., can solve problems such as liquid leakage, battery swelling deformation, battery spontaneous combustion, etc., and achieve the effect of improving the quality of the module and avoiding swelling and deformation

Pending Publication Date: 2022-03-11
HUBEI JINQUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the actual battery surface is not absolutely flat, but has bumps and ups and downs, which makes the existing measurement methods unable to accurately reflect the size of the battery, and defective products will flow into the module line for assembly, resulting in battery module If the size exceeds the standard, the plastic bracket of the module will bulge and deform, which will affect the overall performance of the battery module. In severe cases, the battery will even bulge and deform and leak, which will cause the battery to spontaneously ignite

Method used

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  • Battery size measurement method, device and equipment and storage medium
  • Battery size measurement method, device and equipment and storage medium
  • Battery size measurement method, device and equipment and storage medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] figure 1 It is a flow chart of a battery size measurement method provided by Embodiment 1 of the present invention. This embodiment is applicable to the case where the surface of the battery has unevenness and undulations. The method can be performed by the battery size measurement device provided by the embodiment of the present invention. , the device can be implemented by software and / or hardware, and is usually configured in computer equipment, such asfigure 1 As shown, the method specifically includes the following steps:

[0064] S101. Select multiple target points on the first surface of the battery.

[0065] In the embodiment of the present invention, the battery may be a soft-pack lithium battery, and the soft-pack lithium battery is a liquid lithium-ion battery covered with a polymer shell. In terms of structure, it is packaged with aluminum-plastic film. In the event of a safety hazard, the soft-pack battery will at most explode and burst, and eventually cat...

Embodiment 2

[0074] Figure 2A It is a flow chart of a battery size measurement method provided by Embodiment 2 of the present invention. This embodiment is further refined on the basis of the above-mentioned Embodiment 1, and describes in detail the specific process of each step in the battery size measurement method, as shown in Figure 2A As shown, the method includes:

[0075] S201. Coordinate any point on the first surface of the battery to obtain the coordinates of any point on the first surface of the battery.

[0076] In the embodiment of the present invention, a space rectangular coordinate system is established, and any point on the first surface of the battery is coordinateized to obtain the coordinates of any point on the first surface of the battery.

[0077] In some embodiments of the present invention, the process of establishing a space Cartesian coordinate system is as follows:

[0078] 1. Select a local area on the first surface of the battery whose flatness is greater ...

Embodiment 3

[0104] image 3 A schematic structural diagram of a battery size measuring device provided in Embodiment 3 of the present invention, as shown in image 3 As shown, the device includes:

[0105] A target point selection module 301, configured to select a plurality of target points on the first surface of the battery;

[0106] an isotropic point determining module 302, configured to determine the isotropic point of the target point on a second surface opposite to the first surface, the isostatic point being a projection of the target point on the second surface;

[0107] The measurement module 303 is configured to measure the distance between each target point and the corresponding equipotential point to obtain the size distribution of the battery.

[0108] In some embodiments of the present invention, the target point selection module 301 includes:

[0109] A coordinate submodule, configured to coordinate any point on the first surface of the battery to obtain the coordinate...

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Abstract

The invention discloses a battery size measurement method, device and equipment and a storage medium, a plurality of target points are selected on a first surface of a battery, equipotential points of the target points are determined on a second surface opposite to the first surface, the equipotential points are projections of the target points on the second surface, the distance between each target point and the corresponding equipotential point is measured, and the battery size is measured. The size distribution of the battery can be obtained, the size of the battery can be accurately measured, the concave-convex state of the surface of the battery can be comprehensively reflected, data support is provided for module assembly, the problems of bracket bulging deformation, even battery bulging deformation and liquid leakage during module assembly are avoided, and the module quality is improved.

Description

technical field [0001] Embodiments of the present invention relate to battery technology, and in particular to a battery size measurement method, device, equipment and storage medium. Background technique [0002] The battery size and large surface shape have a great impact on module assembly, cycle preload, rate performance, and heat conduction between cells. [0003] The battery size is the key size in the battery sorting and PACK assembly stages. Currently, plate thickness gauges, height gauges, and vernier calipers are mainly used to measure battery size. The flat plate thickness gauge can adjust the pressure value and measure the highest point size of the battery under pressure; the height gauge measures the local size and is limited by the depth, so it is not suitable for measuring larger samples; the vernier caliper measures the local size, And the tester has a great influence on the result, and the test accuracy is low. The above measurement methods all idealize t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B11/00G01B11/02G01B11/30
CPCG01B11/002G01B11/02G01B11/30
Inventor 肖媛张成立张麒翔李伟民
Owner HUBEI JINQUAN NEW MATERIALS CO LTD
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