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Battery

A technology of battery pack and bottom plate, which is applied in the direction of batteries, battery pack parts, secondary batteries, etc.

Active Publication Date: 2022-04-08
HONDA MOTOR CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] In recent years, in order to improve work efficiency, there has been an increasing tendency to increase the capacity of battery packs mounted on electric lawn mowers, and this has created a need to solve the problem of heat generated from the battery unit

Method used

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Embodiment Construction

[0040] A battery pack according to a preferred embodiment of the present invention mounted on an electric lawn mower as an example of an electric working machine is referred to below Figure 1 to Figure 7 to describe.

[0041] Such as figure 1 and figure 2 As shown, the electric lawnmower 1 according to the present embodiment includes: a main body 2; a blade 3 disposed in a lower portion of the main body 2; and a pair of front wheels 4 and a pair of rear wheels coupled to the main body 2; and a handle 6, which extends backward and upward from the main body 2. A cavity 7 is provided centrally in the lower part of the body 2 and the blade 3 is received in the cavity 7 . The main body 2 supports a blade motor 8 having a rotating shaft cooperating with the blade 3 , and a travel motor 9 for driving the left and right rear wheels 5 . Both the blade motor 8 and the travel motor 9 are constituted by electric motors, and the main body 2 is provided with a control unit 10 for driv...

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PUM

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Abstract

A battery pack has air flow passages extending from the exterior of the battery pack to the battery cells, thereby preventing water from reaching the battery cells. The battery pack has a case. The case has an outer bottom plate and an inner bottom plate, defines a main chamber for accommodating the battery unit above the inner bottom plate, and defines a sub chamber between the outer bottom plate and the inner bottom plate. The outer bottom plate includes an outer flat plate portion formed substantially parallel to the inner bottom plate, and a vertical wall extending from an end portion of the outer flat plate portion and reaching an end portion of the inner bottom plate. The inner bottom plate is provided with at least one opening having a cylindrical flange protruding toward the outer bottom plate. In the case, an air flow passage is formed, thereby communicating the outside of the case with the sub-chamber. At a position adjacent to the vertical wall, the bottom surface of the inner bottom plate is inclined upward toward the vertical wall away from the outer bottom plate with respect to the reference plane of the bottom surface of the inner bottom plate. The air flow path includes a first flow hole having an edge portion on a higher side than the reference plane.

Description

technical field [0001] The present invention relates to a removable, rechargeable battery pack for powering an electric lawn mower. Background technique [0002] Electric work machines for mowing lawns, such as electric lawn mowers, are known to be equipped with removable battery packs to increase user productivity. For example, see Patent Document 1. Since such electric work machines are primarily used outdoors, there is a need to protect the battery pack and associated electrical components from moisture from rain and watering devices. [0003] The electric lawn mower disclosed in Patent Document 1 is provided with a battery cover configured to selectively close a battery mounting portion, thereby protecting the battery mounting portion from moisture. In addition, a drain hole is provided in the lowermost part of the battery mounting portion, so that moisture (such as rainwater) that may enter the battery cover can be drained from the drain hole, and waterproofness of th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01M50/244B25F5/00H01M10/613H01M10/6235H01M10/6561H01M50/204
CPCH01M10/613H01M10/6235H01M10/6556H01M10/6554H01M10/6566H01M10/6563H01M10/6565B25F5/02Y02E60/10H01M50/204H01M10/625H01M10/6561A01D34/6806A01D34/69A01D34/78A01D2101/00B25F5/00H01M2220/20H01M50/24
Inventor 末吉俊一郎村冈敬介永谷修志
Owner HONDA MOTOR CO LTD