Volvo Trucks

A computer system and computer-implemented method are disclosed for determining a relaxation state of a battery cell online. The computer-implemented method comprises: acquiring, by processing circuitry of a computer system, a first terminal voltage of the battery cell measured at a first time; acquiring, by the processing circuitry, a second terminal voltage of the battery cell measured at a second time a period later than the first time; determining, by the processing circuitry, a relaxation metric based on a difference between the first terminal voltage and the second terminal voltage over the period; and determining, by the processing circuitry, a relaxation state of the battery cell online by comparing the determined relaxation metric to a threshold.

The disclosure relates to a computer system (800) for estimating power consumption in vehicle (1), the vehicle (1) comprising a plurality of power consumers (3), the computer system (800) comprising processing circuitry (802) configured to:• determine which of the plurality of power consumers (3) that are active;• determine an expected consumption associated with power for each active power consumer (3); and to• determine an estimated total power consumption for all active power consumers (3) by summing the expected consumption associated with power for each active power consumer (3).

A computer system (100) comprising processing circuitry (102) configured to: acquire internal resistance values (R_cell) of individual electrical energy storage cells within an electrical energy storage pack (104a-b), acquire an overall internal resistance (R_overall) of the electrical energy storage pack including cell and power path resistances, associate each internal resistance value of individual cells and the overall internal resistance with other electrical energy storage pack characteristics (110), compare the internal resistance values of individual cells and the overall internal resistance with a cell internal resistance reference parameter (112) and an overall internal resistance reference parameter (114) for other electrical energy storage packs with similar electrical energy storage pack characteristics, the other electrical energy storage packs are within a fleet of units equipped with electrical energy storage packs, when either the acquired internal resistance value of a cell fulfil a cell resistance criterion, and/or the acquired overall internal resistance fulfil an overall resistance criterion, provide an output message (M) that a fault is detected in the respective cell (106) and/or electrical energy storage pack (104a-b) power path.

A computer system (100) comprising processing circuitry (102) configured to: acquire an electrical parameter value (Ep) of an electrical energy storage pack (104a) of a first unit in a unit fleet (105), retrieve reference data (110) generated from logged electrical parameter values of electrical energy storage packs in the fleet of units, the retrieved reference data being determined from logged electrical parameter values (114) associated with units having at least one driving or usage attribute (112, 111) in common with the first unit, compare the acquired electrical parameter value with the retrieved reference data, provide an indication message (M) of a power path fault depending on the outcome of the comparison.

A computer system (100) comprising processing circuitry (102) configured to: obtain (200) cab-related data, including at least one of cab type (106), cab volume (108), presence of a sleeper cab (110), and window area (112) of a cab of a vehicle; obtain (202) a parameter indicative of a climate control setting (114) of the cab; obtain (204) a parameter indicative of a status and capacity of a vehicle battery (104); estimate (206) a remaining operational time of the vehicle battery during standstill using a computational model that takes as input at least the obtained cab-related data, the parameter indictive of a climate control setting, and the parameter indicative of the status and capacity of the vehicle battery.

A computer system (900) comprising processing circuitry (902) configured for predictive traction control of a vehicle (10) the processing circuitry further being configured to: obtain current vehicle state data (110) of the vehicle (10); obtain road data (120), predict vertical loads (134) on at least one wheel and/or axle of the vehicle (10), determine global forces (136), determine a plurality of possible electronically controlled suspension (ECS) settings (140), determine a matrix (145) of traction and steering capabilities for the plurality of ECS-settings (140), and determine a suitable action (150) to be carried out by the vehicle (10) in order to achieve a balance between traction and steering capabilities for the upcoming road section (53), wherein the determination is based on the matrix (145) of traction and steering capabilities and the determined global forces (136).

The present disclosure relates to a battery suspension arrangement for a vehicle, the battery suspension arrangement comprising: a frame bracket configured to be connected to a frame of the vehicle, a battery bracket configured to be directly or indirectly connected to a traction battery, and a bushing bracket pivotably connected to the frame bracket about a predefined pivot axis, the bushing bracket comprising a bushing, wherein the bushing bracket is configured to pivot between a first position in which the bushing is spaced apart from the battery bracket, and a second position in which the bushing engages the battery bracket to support the battery bracket relative to the frame bracket.

The present disclosure relates to a connector assembly for a high-voltage, HV, cable, the assembly comprising: an inner header configured to enclose the HV cable; an outer shell configured to enclose the inner header; and a high-voltage interlock loop, HVIL; wherein the outer shell is movable relative the inner header between a first position in which an inspection hole of the outer shell is configured to misalign with an inspection hole of the inner header, and a second position in which the inspection hole of the outer shell is configured to align with the inspection hole of the inner header so as to provide an open path to the HV cable from outside the connector assembly, and wherein the HVIL is configured such that it is interrupted when the outer shell is arranged in the second position; and wherein one of the inner header or the outer shell comprises a locking pin configured to engage with a groove arranged in the other one of the inner header or the outer shell so as to guide the movement of the outer shell between the first position and the second position.

The present disclosure relates to a method (100, 100') of operating an Energy Management System, EMS, (10) for electrical vehicle charging, the method comprising sending (102) energy availability information (12) to a Charge Point Management System, CPMS, (20) wherein the energy availability information (12) comprises green energy information; and controlling (104) charging of a Battery Energy Storage System, BESS, (34) to a desired charge level based on a charging request (22) for an electrical vehicle charging received via the CPMS (20). The controlling of the charging comprises predicting green energy availability on the grid (40), and charging (106) the BESS (34) to the desired charge level based on the prediction of green energy availability and the charging request (22). The disclosure further relates to method (200) of operating a CPMS (20), and systems related thereto.

A vent unit (100) for an energy storage system (200), the vent unit comprising: a particle trapping system configured to function as a breather unit during normal operation and as a particle-trapping unit during a thermal runaway event, the particle trapping system comprising an inflatable multi-layer inner membrane (102a-c) configured to filter gas-borne particles during a thermal runaway event, and an inflatable gas-permeable outer membrane (104), configured to allow breathing and the release of filtered gases.