US 12,252,864 B2
Working machine, a work attachment and a combination thereof
Christian Hahn, Schmeiz (DE); and Björn Dusemund, Trier Rheinland Pfalz (DE)
Assigned to Volvo Construction Equipment AB, Eskilstuna (SE)
Appl. No. 17/043,409
Filed by Volvo Construction Equipment AB, Eskilstuna (SE)
PCT Filed Apr. 6, 2018, PCT No. PCT/EP2018/025095
§ 371(c)(1), (2) Date Sep. 29, 2020,
PCT Pub. No. WO2019/192669, PCT Pub. Date Oct. 10, 2019.
Prior Publication US 2021/0108392 A1, Apr. 15, 2021
Int. Cl. B60L 1/00 (2006.01); B60L 50/60 (2019.01); B60L 53/16 (2019.01); E02F 3/36 (2006.01); E02F 3/96 (2006.01); E02F 9/20 (2006.01); E02F 9/22 (2006.01); E01H 1/05 (2006.01); E01H 5/08 (2006.01); E02F 3/28 (2006.01); E02F 3/43 (2006.01); H02J 7/00 (2006.01); H02K 11/00 (2016.01); H02K 11/33 (2016.01)
CPC E02F 3/3654 (2013.01) [B60L 1/003 (2013.01); B60L 50/60 (2019.02); E02F 3/96 (2013.01); E02F 9/2025 (2013.01); E02F 9/2278 (2013.01); B60L 53/16 (2019.02); B60L 2200/40 (2013.01); B60L 2210/10 (2013.01); B60L 2210/40 (2013.01); E01H 1/056 (2013.01); E01H 5/08 (2013.01); E02F 3/283 (2013.01); E02F 3/431 (2013.01); H02J 7/0045 (2013.01); H02K 11/0094 (2013.01); H02K 11/33 (2016.01)] 12 Claims
OG exemplary drawing
 
1. A construction vehicle comprising:
a work attachment connection arrangement configured to operationally connect to the construction vehicle a work attachment provided with a work tool; and
a control system configured to control the operation of the construction vehicle and to, when the work attachment is connected to the construction vehicle via the work attachment connection arrangement, control the operation of the work attachment,
wherein the construction vehicle further comprises:
at least a first electric motor configured for operation of the construction vehicle, operation of the construction vehicle comprising:
operation of the work attachment; and
propulsion of the construction vehicle;
a first rechargeable battery configured to supply the first electric motor with electric power; and
an electric power circuit connecting the first electric motor and the first rechargeable battery,
wherein the work attachment connection arrangement comprises a first electrical connector and second electrical connector connected to the electric power circuit of the construction vehicle,
wherein the first electric connector is configured to be connected to a corresponding electrical connector arranged on the work attachment,
wherein the second electrical connector is configured to be connected to a corresponding electrical connector arranged on the work attachment and connected to an electric work tool motor, wherein the electric work tool motor is arranged on the work attachment and configured to directly or indirectly drive the work tool, so as to allow electric connection of the electric work tool motor to the electric power circuit of the construction vehicle when the work attachment is connected to the construction vehicle via the work attachment connection arrangement, and
wherein the corresponding electrical connector is connected to an auxiliary rechargeable battery arranged on the work attachment, so as to allow electric connection of the auxiliary rechargeable battery to the electric power circuit of the construction vehicle to power the first electric motor when the work attachment is connected to the construction vehicle via the work attachment connection arrangement.