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Power battery model construction method and device, equipment and medium

A technology of power battery and construction method, which is applied in electric digital data processing, design optimization/simulation, special data processing application, etc., can solve problems such as poor practicability and insufficient modeling conditions, so as to improve accuracy and practicability. Effect

Pending Publication Date: 2022-02-08
北京胜能能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing fine modeling method is only based on the geometric model of the power battery, the modeling conditions are not comprehensive enough, and the practicability is poor

Method used

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  • Power battery model construction method and device, equipment and medium
  • Power battery model construction method and device, equipment and medium
  • Power battery model construction method and device, equipment and medium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] figure 1 It is a flowchart of a power battery model building method provided by Embodiment 1 of the present invention. This embodiment is applicable to the situation of building a power battery simulation model. This method can be executed by a power battery model building device, which can be Implemented in the form of software and / or hardware, the device can be configured in a terminal device. Exemplarily, the terminal device can be an intelligent terminal such as a mobile terminal, a notebook computer, a desktop computer, a server, and a tablet computer. Specifically include the following steps:

[0029] S110. Obtain an initial pressure value corresponding to the thermal insulation buffer in the power battery.

[0030] Wherein, the power battery is a power source that provides power for the tool. Exemplarily, the power battery may be a storage battery that provides power for new energy vehicles, electric trains, electric bicycles, and golf carts. The power battery ...

Embodiment 2

[0041] Figure 4 It is a flow chart of a power battery model building method provided in Embodiment 2 of the present invention. The technical solution of this embodiment is further refined on the basis of the above embodiments. Optionally, the initial pressure value includes an initial linear pressure value. Correspondingly, the obtaining the initial pressure value corresponding to the heat insulation buffer in the power battery includes: obtaining the first pressure value corresponding to the heat insulation buffer in the power battery. Compression amount-pressure data; based on the first compression amount-pressure data and the preset compression amount, determine the initial linear pressure value corresponding to the thermal insulation buffer; correspondingly, the preset model parameters based on the power battery and the initial pressure value, determining the initial simulation model of the power battery, including: determining the initial simulation model of the power ba...

Embodiment 3

[0061] Figure 5 It is a flow chart of a power battery model building method provided in Embodiment 3 of the present invention. The technical solution of this embodiment is further refined on the basis of the above embodiments. Optionally, the initial pressure value includes an initial nonlinear pressure value. Correspondingly, the obtaining the initial pressure value corresponding to the heat insulation buffer in the power battery includes: obtaining the first pressure value corresponding to the heat insulation buffer in the power battery. Two compression amount-pressure data: based on the second compression amount-pressure data, preset compression amount and compression amount coefficient, determine an initial nonlinear pressure value corresponding to the thermal insulation buffer.

[0062] Further, the method further includes: based on the initial simulation model, determining the nonlinear simulation parameter value of the power battery; based on the nonlinear simulation p...

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Abstract

The embodiment of the invention discloses a power battery model construction method and device, equipment and a medium. The method comprises the following steps: acquiring an initial pressure value corresponding to a heat insulation buffer in the power battery; and determining an initial simulation model of the power battery based on preset model parameters of the power battery and the initial pressure value, wherein the initial simulation model does not comprise a heat insulation buffer piece, and pressure corresponding to the initial pressure value is applied to the surface of the battery cell monomer corresponding to the heat insulation buffer piece in the initial simulation model. According to the embodiment of the invention, the initial simulation model is constructed by adopting pressure instead of a heat insulation buffer piece between the battery cell monomers, so that the simulation process of the power battery considers the influence of compression rebound force brought by the heat insulation buffer piece between the battery cell monomers, the problem that the precision of the simulation model of the existing power battery is relatively poor is solved, the practicability of the simulation model of the power battery is improved, and then the accuracy of the simulation result of the power battery is improved.

Description

technical field [0001] The embodiments of the present invention relate to the technical field of new energy vehicles, and in particular to a model building method, device, equipment and medium for a power battery. Background technique [0002] The power battery pack is a key component of new energy vehicles and its source of power. Among them, the power battery module is the core component of the power battery pack, and it is the component with the largest weight ratio of the battery pack. The power battery module is composed of a battery cell, an aluminum end plate, a side plate, a thermal insulation buffer, and an electrical connector. And wiring harness and other components. [0003] In the prior art, a fine modeling method is often used to simulate and analyze the power battery pack under various working conditions to check the performance of the power battery pack. However, the existing fine modeling methods are only based on the geometric model of the power battery, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20G06F119/14
CPCG06F30/20G06F2119/14
Inventor 郑小龙高敏石岩石
Owner 北京胜能能源科技有限公司