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A Multi-motor Flexible Torque Concentrated Drive Combination Box and Electric Vehicle

A centralized drive and multi-motor technology, which is applied in the field of vehicles, can solve the problems of vehicles not being able to drive normally, the weight of the electric drive system, and insufficient power performance, so as to improve driving comfort, reduce shifting frustration, and improve efficiency.

Active Publication Date: 2022-04-08
ZHEJIANG GEELY HLDG GRP CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application field of large-tonnage vehicles, because the vehicles require a large output torque and at the same time ensure a high maximum speed, most companies use a single high-torque, low-speed drive motor with a fixed speed ratio reduction device, which will This leads to problems such as heavy weight of the electric drive system, high manufacturing cost, and insufficient power performance at medium and high speeds; However, it will still cause power interruption caused by frequent shifting, reduce comfort, and further increase system cost; in addition, once the motor fails, the vehicle will not be able to drive normally

Method used

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  • A Multi-motor Flexible Torque Concentrated Drive Combination Box and Electric Vehicle
  • A Multi-motor Flexible Torque Concentrated Drive Combination Box and Electric Vehicle
  • A Multi-motor Flexible Torque Concentrated Drive Combination Box and Electric Vehicle

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Experimental program
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Effect test

Embodiment 1

[0047] refer to Figure 1 to Figure 3 As shown, the multi-motor flexible torque centralized drive combination box of this embodiment may at least include a power source 1 and a reduction gear assembly 2 . Further, the multi-motor flexible torque centralized drive combination box may also include a differential 4 .

[0048] The number of power sources 1 is at least two, and each power source 1 includes a driving motor 1A for outputting driving force. The performance and geometric dimensions of each driving motor 1A are the same to simplify the control of driving motor 1A. It should be noted, Figure 1 to Figure 3 The number of power sources 1 shown in the figure is only illustrative, and can be selected according to vehicle application requirements in practical applications, for example, it can be 2, 3, or even more. In a specific embodiment, the number of power sources 1 may be four. The reduction gear assembly 2 has the same number as the power source 1, and is connected ...

Embodiment 2

[0056] refer to Figure 4 and Figure 5 As shown, the difference between Embodiment 2 and Embodiment 1 is that the multi-motor flexible torque centralized drive combination box of this embodiment also includes a speed change device connected between the input end of the differential 4 and the output end of each reduction gear assembly 2 device 3. At this time, the output end of each reduction gear assembly 2 (ie, the second transmission gear 2B) is connected to the transmission device 3 , and further connected to the input end of the differential 4 through the transmission device 3 .

[0057] Specifically, the drive motor 1A, the reduction gear assembly 2, and the speed change device 3 of this embodiment are all built with the inner casing of the speed change device 3 as a carrier, thereby improving the integration of parts and making the multi-motor flexible torque concentrate to drive the synthesis box The structure is more compact.

[0058] The speed change device 3 incl...

Embodiment 3

[0074] refer to Figure 6As shown, the difference between the third embodiment and the second embodiment is that multiple power sources 1 are arranged in opposite directions. The opposing arrangement means that a part of the driving motor 1A is arranged in front of the reduction gear assembly 2 and another part of the driving motor 1A is arranged in the rear of the reduction gear assembly 2 . For example, for two power sources 1, one drive motor 1A is arranged in front of the reduction gear assembly 2 and the other drive motor 1A is arranged behind the reduction gear assembly 2. Arrange other components or systems of the vehicle to meet the system layout of the whole vehicle.

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Abstract

The present invention provides a multi-motor flexible torque centralized drive composite box and an electric vehicle. The multi-motor flexible torque centralized drive synthesis box includes: at least two power sources, each of which includes a drive motor for outputting driving force; and at least two reduction gear assemblies, which are connected to the at least two power sources in one-to-one correspondence and are used for transmit driving force. By adopting the arrangement of multiple groups of low-torque, high-speed drive motors to replace the existing single high-torque, low-speed drive motor arrangement, it can meet the high torque requirements of low-speed conditions while ensuring medium and high-speed power performance, and reduce Manufacturing and purchasing costs. In addition, when a certain drive motor fails, the vehicle can still be driven normally with the help of other drive motors, which improves the reliability of the electric drive system.

Description

technical field [0001] The invention relates to the technical field of vehicles, in particular to a multi-motor flexible torque centralized drive synthesis box and an electric vehicle. Background technique [0002] As the energy crisis and environmental pollution problems continue to intensify, countries around the world, especially China, which is a major automobile country, are vigorously advocating and paying attention to the development of electric vehicles, and the electric drive system of electric vehicles has become the focus of research and development by various companies. However, in the application field of large-tonnage vehicles, since the vehicles require a large output torque and at the same time ensure a high maximum speed, most companies use a single high-torque, low-speed drive motor with a fixed speed ratio reduction device, which will This leads to problems such as heavy weight of the electric drive system, high manufacturing cost, and insufficient power p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B60K1/02B60L15/32B60K1/04B60L53/80B60K17/08B60K17/16B60K20/02
CPCB60K1/02B60L15/32B60K1/04B60L53/80B60K17/08B60K17/16B60K20/02Y02T10/70Y02T10/7072B60Y2200/91F16H2200/0021F16H2200/0034F16H3/089B60L2220/42B60L15/2054B60L3/0061B60L2200/36B60Y2200/14F16H1/22B60Y2200/142Y02T10/64
Inventor 李书福
Owner ZHEJIANG GEELY HLDG GRP CO LTD
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