Battery cell testing method and device

A test method and technology of temperature detection device, applied in the direction of measurement device, measurement of electricity, measurement of electric variables, etc., can solve the problems that designers and developers cannot reasonably guide the research and development stage, and cannot meet the performance required by electric vehicles, so as to improve detection The effect of precision

Inactive Publication Date: 2019-03-22
CH AUTO TECH CORP CO LTD
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Problems solved by technology

[0003] In the related technology, in the battery discharge test method, the discharge mode of the battery mostly adopts constant current discharge to the lower limit voltage, but in the actual working condition of the battery, especially for the electric sports car, the battery will have BOOST discharge-that is, strengthened Pulse discharge, which leads to the inability of design developers to reasonably guide the design of RESS (Rechargeable Energy Storage System rechargeable energy storage system) in the research and development stage, resulting in the inability to meet the required performance of electric vehicles

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  • Battery cell testing method and device
  • Battery cell testing method and device

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Embodiment Construction

[0024] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the drawings are exemplary, and are only used to explain the present invention, but should not be understood as limiting the present invention.

[0025] Reference below Figure 1-Figure 2 The test method of the battery cell 50 according to the embodiment of the present invention is described.

[0026] The test method of the battery cell 50 according to the embodiment of the present invention includes the following steps: a temperature adjustment step, a charging step, and a discharging step.

[0027] Specifically, the temperature adjustment step includes: adjusting the temperature of the battery cell 50 to the target temperature T. The charging step incl...

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Abstract

The invention discloses a battery cell testing method and device. The battery cell testing method includes the following steps of adjusting the temperature, wherein the temperature of a battery cell is adjusted into a target temperature T; conducting charging, wherein the battery cell is charged to have the first voltage V1 and then the battery cell keeps the target temperature T; conducting discharging, wherein the battery cell is discharged to have the second voltage V2, and the first voltage V1 is higher than the second voltage V2; executing the charging step and the discharging step multiple times and obtaining charging and discharging parameters to form a pulse discharge working condition graph. Thus, by ensuring the testing temperature of the battery cell, the testing precision is improved; the charging parameters are obtained through charging and discharging of the battery cell, and the pulse discharge working condition graph is formed to guide the design of the RESS in the research and development stage.

Description

Technical field [0001] The invention relates to the technical field of battery cell detection, in particular to a test method and a test device of a battery core. Background technique [0002] At present, new energy vehicles mostly use lithium-ion batteries as the power source, and the electrical performance parameters and indicators of the batteries directly affect the formulation of control strategies in the research and development stage and the reliability of the vehicle's power performance. [0003] In the related technology, in the discharge test method of the battery, the discharge mode of the battery usually adopts constant current discharge to the lower limit voltage, but in the actual working condition, especially for the electric sports car, the battery will have BOOST discharge-that is, strengthen Pulse discharge, resulting in the design and development personnel unable to reasonably guide the design of the RESS (Rechargeable Energy Storage System) in the R&D phase, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/36
CPCG01R31/3644
Inventor 王克坚周美娟
Owner CH AUTO TECH CORP CO LTD
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