Double-battery pow supply device and control method for electric vehicle

A technology of a power supply device and a control method, which is applied in the field of electric vehicles, can solve the problems of being unsuitable for large-scale application, increasing the cost of battery installation, and increasing the difficulty of assembly and disassembly of sub-battery packs, so as to be suitable for large-scale application, reduce costs, and improve The effect of user experience

Active Publication Date: 2018-12-18
氢驰动力科技山西有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the existing electric vehicle battery system, the installation location of the auxiliary battery pack is usually an irregular area, and the existing main battery pack and auxiliary battery pack adopt an integrated structure, which increases the assembly and maintenance of the auxiliary battery pack. It is difficult to disassemble, increases the installation cost of the battery, and is not conducive to the standardized control of the battery system, and is not suitable for large-scale applications

Method used

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  • Double-battery pow supply device and control method for electric vehicle
  • Double-battery pow supply device and control method for electric vehicle
  • Double-battery pow supply device and control method for electric vehicle

Examples

Experimental program
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Effect test

Embodiment 1

[0050] figure 1 A dual-battery power supply device for an electric vehicle according to Embodiment 1 of the present invention is shown. like figure 1 As shown, the device 10 includes: a main battery pack B1, a secondary battery pack B2, a main contactor group C1 and a secondary contactor group C2.

[0051] Wherein, the main battery pack B1 adopts a monolithic structure, which can be arranged on the chassis, the trunk, and / or the front cabin of the electric vehicle. Those skilled in the art can select the installation location of the main battery pack B1 according to actual needs. Specifically, the main battery pack B1 can be fixed in the electric vehicle body for a long time, and the main battery pack B1 is usually not disassembled except for maintenance and replacement.

[0052]The sub-battery pack B2 includes a plurality of battery sub-packs B21 connected to each other. Wherein, the connection mode of each battery subpackage B21 can be set by those skilled in the art. F...

Embodiment 2

[0062] Figure 4 It shows a schematic flowchart of a control method for the dual-battery power supply device for electric vehicles described in the first embodiment according to the second embodiment of the present invention. like Figure 4 As shown, the method includes:

[0063] Step S410, during the power-on process of the main battery pack, monitor the running state of the electric vehicle, and trigger a battery pack switching request according to the running state of the electric vehicle.

[0064] Specifically, during the power-on process of the main battery pack, the power, fault conditions, user operations, and / or vehicle speed status of the main battery pack and the auxiliary battery pack in the electric vehicle are monitored.

[0065] If the power of the current main battery pack is less than the first preset power threshold, and / or, the current main battery pack has a preset failure, and / or, when the user’s main battery pack power retention trigger operation is curr...

Embodiment 3

[0078] Embodiment 3 of the present invention provides a processor, wherein the processor can perform operations corresponding to the method for controlling a dual-battery power supply device for an electric vehicle as described in Embodiment 2.

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Abstract

The invention discloses a dual-battery power supply device and a control method for an electric vehicle. The device comprises a main battery pack, a sub-battery pack, a main contactor group and a sub-contactor group, wherein the device comprises a main battery pack, a sub-battery pack, a main contactor group and a sub-contactor group. Wherein, the main battery pack is an integral structure; The secondary battery pack includes a plurality of battery subpacks connected to each other; The main contactor group is connected with the main battery pack for controlling the power supply state of the main battery pack; The sub-contactor pack is connected with the sub-battery pack for controlling the power supply state of the sub-battery pack. The method can avoid the drawbacks of high difficulty inmounting and dismounting the auxiliary battery pack in the prior art, thereby reducing the cost and facilitating the standardized control of the battery system of the electric vehicle, and is suitablefor large-scale application. In addition, since a plurality of batteries in the auxiliary battery pack are separately arranged in the scheme, different connection modes of the battery subcontractingare convenient to be selected according to different user requirements, thereby further improving the user experience and reducing the cost.

Description

technical field [0001] The invention relates to the technical field of electric vehicles, in particular to a dual-battery power supply device and a control method for electric vehicles. Background technique [0002] An electric vehicle is a vehicle that uses batteries as its energy source and converts electrical energy into mechanical kinetic energy through controllers, motors and other components. The battery is one of the main components of the electric vehicle, its performance and cost will directly or indirectly affect the overall performance and cost of the electric vehicle. [0003] At present, because the cost of batteries in electric vehicles accounts for a relatively high proportion of the total cost of electric vehicles, in order to reduce the one-time purchase cost of users, the batteries in electric vehicles are usually divided into main battery packs and auxiliary battery packs. When the user buys a car, he can only buy the main battery pack, and if he needs to...

Claims

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Application Information

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IPC IPC(8): B60L11/18
CPCY02T10/70
Inventor 宁兴江
Owner 氢驰动力科技山西有限公司
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