Vehicle power battery preheating device and control method thereof

A technology of power battery and preheating device, which is applied in the field of vehicle power battery preheating device and its control based on motor and electronic control system, vehicle power battery preheating device and its control field, and can solve the problem of low energy consumption efficiency problems, to achieve the effect of not being prone to safety accidents, uniform temperature distribution, and saving installation space

Inactive Publication Date: 2020-12-18
SHANGHAI JIAO TONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the energy efficiency of the above scheme is not high

Method used

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  • Vehicle power battery preheating device and control method thereof
  • Vehicle power battery preheating device and control method thereof
  • Vehicle power battery preheating device and control method thereof

Examples

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Embodiment Construction

[0055] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0056] figure 1 A schematic structural diagram of a vehicle power battery preheating device based on a motor and an electronic control system provided by an embodiment of the present invention, the system includes:

[0057] The power battery pack is composed of several battery modules connected in series / parallel. The types of batteries include but are not limited to ternary lithium batteries, lithium iron phosphate batteries, etc. This embodiment includes a first battery pack and a second battery pack ...

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Abstract

The invention provides a vehicle power battery preheating device and a control method thereof, and the vehicle power battery preheating device comprises a first power battery pack, a second power battery pack, a direct current bus capacitor, a driving motor, a motor driving inverter, a current sensor and a battery preheating control system, the direct current side of the motor driving inverter isconnected with the direct current bus capacitor, the alternating current output side of the motor driving inverter is connected with a stator winding of the driving motor; the first power battery packand the second power battery pack are connected in series to form a power battery pack; the power battery pack is connected in parallel with the DC bus capacitor; the power battery pack is connectedwith a one-phase stator winding of the driving motor through a heating contactor; at least one temperature sensor is arranged at a temperature sampling point of the power battery pack; and the currentsensor is arranged at the alternating-current output end of the motor-driven inverter. According to the invention, the problems of low heating rate, poor effect, high energy consumption, high cost, large volume and the like of the existing battery heating equipment in a low-temperature environment are solved, and the self energy of the battery can be used for heating.

Description

technical field [0001] The present invention relates to the field of battery thermal management, in particular to a vehicle power battery preheating device and a control method thereof, especially a vehicle power battery preheating device based on a motor and an electronic control system and a control method thereof. Background technique [0002] The charging and discharging performance of lithium-ion power batteries will be greatly deteriorated by the low temperature environment, which will seriously affect the driving range of electric vehicles in winter, and will also cause permanent damage to the battery life. Therefore, in a low temperature working environment, the power battery should be preheated before charging and normal driving of the electric vehicle, so that the battery cells can reach the normal working temperature range and improve their working performance. [0003] The low-temperature internal preheating of the power battery is an effective means to ensure th...

Claims

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Application Information

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IPC IPC(8): H01M10/615H01M10/625H01M10/657H01M10/48B60L58/27
CPCB60L58/27H01M10/486H01M10/615H01M10/625H01M10/657Y02E60/10Y02T10/70Y02T10/72
Inventor 朱翀张希郭邦军
Owner SHANGHAI JIAO TONG UNIV
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