An electric vehicle battery pack heating system and heating method

A technology for electric vehicles and heating systems, applied in batteries, secondary batteries, battery temperature control, etc., can solve problems such as the inability to meet new energy vehicles, and achieve the effect of reducing energy consumption

Pending Publication Date: 2018-12-28
WM SMART MOBILITY (SHANGHAI) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Based on this, it is necessary to provide an electric vehicle battery pack heating system and its heating method in view of the technical problems existing in the existing technology that cannot satisfy the use of new energy vehicles under various low temperature conditions.

Method used

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  • An electric vehicle battery pack heating system and heating method
  • An electric vehicle battery pack heating system and heating method
  • An electric vehicle battery pack heating system and heating method

Examples

Experimental program
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Embodiment Construction

[0033] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0034] Such as figure 1 Shown is a system schematic diagram of a battery pack heating system for an electric vehicle, including: a battery pack circuit 1 communicated with the battery pack 5 of the electric vehicle, a drive motor circuit 2 communicated with the motor cooling water channel of the drive motor 6 shell of the electric vehicle, Controller 3, and first temperature sensor 4, wherein:

[0035] The battery pack circuit 1 includes a second heater 13, a first heater 12 communicating with the battery pack, and a first switch 11 for controlling the communication or bypass between the battery pack 5 and the second heater 13 ;

[0036] The drive motor circuit 2 is connected or disconnected with the battery pack circuit 1 through the second switch 21;

[0037] The output terminals of the controller 3 are connected to the first swi...

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PUM

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Abstract

The invention provides an electric vehicle battery pack heating system and heating method. The system includes: a battery pack circuit communicating with a battery pack of an electric vehicle, a drivemotor circuit communicating with a motor cooling water channel of a drive motor shell of the electric vehicle, a controller and a first temperature sensor. The battery pack circuit includes a secondheater, a first heater in communication with the battery pack, and a first switch that controls the battery pack to communicate with or bypass the second heater. The driving motor circuit is communicated with or disconnected from the battery pack circuit through the second switch. The output terminals of the controller are communicatively connected with the first switch, the second switch, the first heater and the second heater, respectively, the first temperature sensor is arranged at the battery pack outlet, and the first temperature sensor is communicatively connected with the input terminal of the controller. The invention utilizes a plurality of heating element and introduces a power motor heat recovery technology, the battery pack can continuously and efficiently work under various low-temperature working condition, and energy consumption can be reduced at the same time.

Description

technical field [0001] The invention relates to the technical field related to electric vehicle battery packs, in particular to a heating system and a heating method for electric vehicle battery packs. Background technique [0002] The new energy vehicle industry is in a stage of rapid development. As the power source of new energy vehicles, the battery continuously provides electric energy for the drive motor. The low charging and discharging efficiency of battery packs in low temperature environment and the short service life of battery packs seriously restrict the development of new energy vehicles. [0003] In order to enable battery packs to charge and discharge efficiently in low temperature environments, battery pack thermal management technologies are gradually being widely adopted. At present, new energy vehicles generally use a single heating element to heat the battery pack, which cannot satisfy the use of new energy vehicles under various low-temperature conditi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01M10/615H01M10/625H01M10/63H01M10/633H01M10/6568H01M10/657H01M10/6595
CPCH01M10/615H01M10/625H01M10/63H01M10/633H01M10/6568H01M10/657H01M10/6595H01M2220/20Y02E60/10
Inventor 卢伟
Owner WM SMART MOBILITY (SHANGHAI) CO LTD
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