Battery pack cooling control method, apparatus and battery pack thereof

A technology of cooling control and battery packs, which is applied in the direction of secondary batteries, circuits, electrical components, etc., can solve the problems of untimely cooling and cooling power, and achieve the effects of avoiding lag, maintaining temperature stability, and reducing temperature fluctuations

Active Publication Date: 2018-06-15
智车优行科技(上海)有限公司
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Problems solved by technology

[0005] The purpose of the present invention is to propose a battery pack cooling control method, device and corresponding battery pack to overcome the untimely cooling o

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  • Battery pack cooling control method, apparatus and battery pack thereof
  • Battery pack cooling control method, apparatus and battery pack thereof

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Embodiment Construction

[0064] The present invention will be described in more detail below with reference to the accompanying drawings. Although preferred embodiments of the invention are shown in the drawings, it should be understood that the invention may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0065] The battery pack of an existing electric vehicle mainly includes a battery pack box body, a plurality of battery cells arranged in the battery pack box body, a coolant circuit surrounding the plurality of battery cells, and a corresponding battery management system. The coolant circuit is provided with an inlet and an outlet. The low-temperature coolant enters the coolant circuit through the inlet, and heats up after exchanging heat with the battery with a higher temperature. Th...

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Abstract

The invention relates to a battery pack cooling control method, an apparatus and a battery pack thereof. The battery pack cooling control method comprises the following steps: obtaining the current temperature Tbat of a battery; determining a battery heat power Pb, a heat-exchange power Pc of the battery by environment, and a battery temperature-reduction power Pt, and calculating a battery cooling power P according to the battery heat power Pb, the heat-exchange power Pc of the battery by environment, and the battery temperature-reduction power Pt; determining a liquid coolant flow velocity Mc of the battery cooling power P; calculating the request inlet coolant temperature according to the battery cooling power P and the liquid coolant flow velocity Mc. The method takes regard of the influence of the current temperature on the battery, and takes regard of influence of the heat power of the battery and the heat-exchange power the battery by environment, feedback control and anticipatory control are combined, defect of cooling control lag can be prevented, temperature fluctuation of the battery pack can be reduced, temperature stabilization of the battery pack can be kept at a maximum degree, and real-time cooling control is realized.

Description

technical field [0001] The invention relates to the field of battery pack temperature control, in particular to a feedforward battery pack cooling control method based on calorific value and temperature monitoring. Background technique [0002] As the core component of pure electric vehicles, the battery system is the only source of power for pure electric vehicles and plays a decisive role in the performance of electric vehicles. When the vehicle is driving under different driving conditions such as high speed, low speed, acceleration, deceleration, etc., the battery will be discharged at different rates, and a large amount of heat will be generated at different heat generation rates. If time accumulation and space effects are added, a large amount of heat will be accumulated , resulting in an increase in the temperature of the battery pack. Rising temperatures within the battery pack can severely impact the operation of the battery's electrochemical system, cycle life and...

Claims

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Application Information

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IPC IPC(8): H01M10/613H01M10/625H01M10/633H01M10/6567
CPCH01M10/613H01M10/625H01M10/633H01M10/6567Y02E60/10
Inventor 黄建新沈海寅
Owner 智车优行科技(上海)有限公司
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