Battery counterweight system

• US 9,908,431 B2
• Filed: 03/13/2017
• Issued: 03/06/2018
• Est. Priority Date: 03/14/2016
• Status: Active Grant

• Current Assignee: The Raymond Corporation (Toyota Motor Corporation)
• Original Assignee: The Raymond Corporation (Toyota Motor Corporation)
• Inventors: Kirk, John Bryant, Standard, Adam Wayne
• Primary Examiner(s): Gurari, Erez
• Application Number:
  US15/457,034
• Publication Number:
  US 20170259693A1
• Time in Patent Office: 358 Days
• CPC Class Codes: B60K 1/04 of the electric storage means for propulsion exchanging batteries for electric propulsion of vehicles B60L53/80; for auxiliary purposes only B60R16/04; supplying batteries to, or removing batteries from, vehicles B60S5/06
• CPC Class Codes: B60L 2200/40 Working vehicles
• CPC Class Codes: B60L 50/64 Constructional details of batteries specially adapted for electric vehicles
• CPC Class Codes: B60Y 2200/15 Fork lift trucks, Industrial trucks
• CPC Class Codes: H01M 10/613 Cooling or keeping cold
• CPC Class Codes: H01M 10/625 Vehicles
• CPC Class Codes: H01M 10/6551 Surfaces specially adapted for heat dissipation or radiation, e.g. fins or coatings
• CPC Class Codes: H01M 10/6556 Solid parts with flow channel passages or pipes for heat exchange closed pipes H01M10/6552
• CPC Class Codes: H01M 2220/20 Batteries in motive systems, e.g. vehicle, ship, plane
• CPC Class Codes: H01M 50/204 Racks, modules or packs for multiple batteries or multiple cells
• CPC Class Codes: H01M 50/224 Metals
• CPC Class Codes: H01M 50/249 specially adapted for aircraft or vehicles, e.g. cars or trains constructional details of batteries specially adapted for electric vehicles B60L50/64
• CPC Class Codes: Y02E 60/10 Energy storage using batteries
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries

Abstract

A counterweight system for a battery of a material handling vehicle is provided. A counterweight case can be configured to receive the battery. One or more spacers can be disposed within the counterweight case. The one or more spacers can space the battery apart from one or more internal walls of the counterweight case, when the battery is received in the counterweight case. In some cases, the spacers, along with vent holes, plugs, brackets, and/or a cover (e.g., a blanket cover) can help to protect the battery from environmental factors (e.g., heat, cold, vibrations, contact, and so on).

Claims

1. A counterweight system for a battery of a material handling vehicle, the counterweight system comprising:

a counterweight case configured to receive the battery;

a plurality of spacers disposed within the counterweight case;

the spacers spacing the battery apart from one or more internal walls of the counterweight case, when the battery is received in the counterweight case; and

the spacers being configured to be customizably arranged into different configurations within the counterweight case.

2. The counterweight system of claim 1, further comprising:

one or more gaps at least partly defined by the spacers, wherein the one or more gaps are configured to allow fluid to flow along the one or more gaps;

wherein a configuration of the one or more gaps is customizably changeable by customizably arranging the spacers.

3. The counterweight system of claim 2, wherein the spacers and the one or more gaps are at least partly disposed along one or more internal surfaces of one or more side walls of the counterweight case.

4. The counterweight system of claim 2, wherein the one or more gaps are configured to allow fluid to flow along one or more fluid paths that are adjacent to the battery, such that fluid flowing along the one or more fluid paths causes convective heat transfer between the fluid and the battery.

5. The counterweight system of claim 1, wherein at least one of the spacers is configured as a spacer pad configured to be removably attached to an inner wall of the counterweight case.

6. The counterweight system of claim 1, wherein one or more side walls of the counterweight case include a plurality of vent holes configured to allow fluid to pass into and out of the counterweight case.

7. The counterweight system of claim 6, further comprising:

a plurality of plugs configured for insertion into the vent holes;

wherein each of the plugs is configured to block passage of fluid into and out of the counterweight case when inserted into a corresponding one of the vent holes.

8. The counterweight system of claim 7, wherein each of the plugs is configured for insertion into each of the vent holes, the plugs thereby being configured to provide a customizably changeable fluid-flow configuration via insertion of one or more of the plugs into a customizably selectable set of one or more of the vent holes.

9. The counterweight system of claim 8, wherein each of the plugs includes a stepped or corrugated geometry extending at least partly between inner and outer ends of the plug.

10. The counterweight system of claim 1, wherein a base portion of the counterweight system includes:

a base support; and

one or more height-adjustment members configured to be disposed above the base support to support the battery at a customizable height.

11. The counterweight system of claim 10, wherein the base portion includes a plurality of the height-adjustment members stacked vertically to shorten a depth of a cavity for the battery.

12. The counterweight system of claim 10, further comprising:

one or more base-portion spacers disposed between the base support and at least one of the one or more height-adjustment members;

wherein the one or more base-portion spacers space the at least one height-adjustment member apart from base support.

13. The counterweight system of claim 12, further comprising:

one or more base-portion gaps at least partly defined by the base-portion spacers, wherein the one or more base-portion gaps are configured to allow fluid to flow at least partly along the one or more base-portion gaps.

14. The counterweight system of claim 10, wherein the base portion of the counterweight system includes one or more base-portion holes configured to allow fluid to pass into and out of the counterweight case.

15. The counterweight system of claim 14, wherein the each of the one or more height-adjustment members includes one or more holes configured to align with the one or more base-portion holes when the one or more height-adjustment members are supported by the base support within the counterweight case.

16. The counterweight system of claim 1, further comprising:

a flexible cover configured to at least partly enclose the counterweight case;

wherein the flexible cover is configured to at least partly trap a gas layer above a top surface of the battery, such that the gas layer thermally insulates the battery.

17. The counterweight system of claim 16, wherein the flexible cover includes a substantially transparent area to allow viewing of the inside of the counterweight case.

18. A customizable battery system for a material handling vehicle, the customizable battery system comprising:

a counterweight case that includes a base support and a plurality of side walls, the base support and side walls at least partly defining a cavity for receiving a battery;

a plurality of first spacer pads disposed within the cavity, at least partly along the plurality of side walls, to space the battery apart from one or more of the side walls, with one or more first gaps between the first spacer pads allowing fluid to flow along the side walls for convective heat transfer with the sides of the battery;

a plurality of second spacer pads disposed within the cavity, at least partly above the base support, to space the battery apart from the base support, with one or more second gaps between the second spacer pads allowing fluid to flow along the one or more second gaps for convective heat transfer with the bottom of the battery; and

a plurality of height adjustment members, each configured to be supported by at least one of;

the base support of the counterweight case, another height adjustment member, and at least one of the second spacer pads;

the first spacer pads and the second spacer pads being configured to be customizably arranged into different configurations within the counterweight case, to one or more of;

support the battery in a customizable orientation and provide customizable heat transfer effects for the one or more first gaps and the one or more second gaps; and

the height adjustment members being configured to be customizably included or excluded from the counterweight case to one or more of;

support the battery in the customizable orientation and provide the customizable battery system with a customizable weight.

19. The customizable battery system of claim 18, further comprising:

a plurality of vent holes through one or more of the side walls, the vent holes being configured to allow fluid to pass into and out of the counterweight case to flow along the one or more first gaps and the one of more second gaps; and

a plurality of plugs configured for insertion into the vent holes to at least partly block flow of fluid through the vent holes;

each of the plugs being configured for insertion into each of the vent holes, the plugs being thereby configured to provide a customizably changeable fluid-flow configuration via insertion of one or more of the plugs into a customizably selectable set of one or more of the vent holes.

20. A method of customizing a battery system for a material handling vehicle, with the battery system including a counterweight case that includes a base support and side walls for receiving a battery, first spacer pads, second spacer pads disposed within the counterweight case at least partly above the base support, and a plurality of height adjustment members, the method comprising:

selecting a number of the height adjustment members for installation within the counterweight case, to provide a support surface for the battery at a select height within the counterweight case;

selecting a number of the first spacer pads for installation along the side walls of the counterweight case, to space the battery at a select spacing from the side walls, with a first select configuration of fluid-flow gaps between the first spacer pads;

selecting a number of the second spacer pads for installation above the base support and the selected height adjustment members, to space the battery at a select distance above the support surface, with a second select configuration of fluid-flow gaps between the second spacer pads;

installing the selected height adjustment members, the selected first spacer pads, and the selected second spacer pads within the counterweight case; and

installing the battery within the counterweight case to be supported by the selected height adjustment members, the selected first spacer pads, and the selected second spacer pads.