Supplemental battery system

Patent metadata

Field	Value
Publication number	US-2020094687-A1
Application number	US-201816141768-A
Country	US
Kind code	A1
Filing date	Sep 25, 2018
Priority date	Sep 25, 2018
Publication date	Mar 26, 2020
Grant date	—

Abstract

Systems of an electrical vehicle and the operations thereof are provided. Batteries, such as standardized batteries, may allow supplemental batteries to be deployed for use by an electric vehicle. Accordingly, a battery and management system are provided to allow a supplemental battery to provide power to a main battery. Additionally, a battery charging system may sequence the charging of batteries based on whether or not the duration of the charge is known and/or sufficient to charge at least the main battery.

First claim

What is claimed is:

1 . A vehicle, comprising:
a battery storage space, the battery storage space comprising a main battery storage portion, accommodating a main battery, and a supplemental battery storage portion, accommodating a supplemental battery, and wherein the main battery provides electrical energy to the vehicle; and a DCDC converter to convert a supplemental voltage, provided by the supplemental battery, to a main voltage of the main battery, wherein the supplemental voltage is dissimilar to the main voltage; and wherein the supplemental battery selectively provides electrical energy to the main battery via the DCDC converter.

2 . The vehicle of claim 1 , wherein the vehicle comprises at least one subsystem configured to operate on the supplemental voltage and at least one different subsystem configured to operate on the main voltage.

3 . The vehicle of claim 2 , wherein the vehicle comprises at least one subsystem configured to operate on the supplemental voltage, comprising at least one of, an active suspension subsystem, an active steering subsystem, and at least one computer utilized for autonomous operation of the vehicle.

4 . The vehicle of claim 1 , wherein the battery storage space comprises a fixed space with a fixed volume.

5 . The vehicle of claim 4 , wherein:
the main battery storage is sized to accommodate the main battery and wherein the main battery comprises a standardized battery geometry; and the main battery, having the standardized battery geometry, is further configured to be accommodated by a second fixed space of a second vehicle, wherein the second fixed space is sized to accommodate the main battery and wherein the second vehicle is unable to accommodate the supplemental battery.

6 . The vehicle of claim 1 , further comprising:
a battery charging controller; and a battery charger configured to receive a charging voltage and selectively charge one or both of the main battery and the supplemental battery; and wherein the selective charging of the one or both of the main battery is in accordance with a control signal of the battery charging controller comprising a processor executing a charging algorithm; and wherein the battery charging controller, upon determining a duration of the charging voltage is unknown, causes the battery charger to charge the main battery, at the exclusion of charging the supplemental battery, until the main battery is charged to a main battery charge threshold level.

7 . The vehicle of claim 6 , wherein the battery charging controller, upon determining the duration of the charging voltage is known and upon further determining that the duration of the charging voltage is at least the duration required to charge both the main battery, to the main battery charge threshold level, and the supplemental battery, to a supplemental battery charge threshold level, causes the battery charger to simultaneously charge both the main battery and the supplemental battery.

8 . The vehicle of claim 6 , wherein the battery charging controller, upon determining the duration of the charging voltage is known and upon further determining that the duration of the charging voltage is not at least the duration required to charge both the main battery and the supplemental battery, causes the battery charger to charge the main battery, at the exclusion of the supplemental battery, to the main battery charge threshold level.

9 . The vehicle of claim 8 , further comprising, the battery charging controller, upon determining the main battery is charged to the main battery charge threshold level, charges the supplemental battery.

10 . The vehicle of claim 1 , wherein the supplemental voltage is no greater than 100 v.

11 . The vehicle of claim 1 , wherein the main voltage is at least 300 v.

12 . A method for supplementing a battery, comprising:
providing a battery storage space in an electric vehicle, the battery storage space comprising a main battery storage portion, accommodating a main battery, and a supplemental battery storage portion, accommodating a supplemental battery, and wherein the main battery provides electrical energy to the electric vehicle; receiving a first voltage from the supplemental battery; converting the first voltage to a second voltage, wherein the second voltage is substantially equivalent to the voltage of the main battery; and selectively connecting the supplemental battery to the main battery.

13 . The method of claim 12 , further comprising:
receiving, by the electric vehicle, a charging voltage and selectively charging one or both of the main battery and the supplemental battery with the charging voltage; and determining a duration of the charging voltage is unknown, charging the main battery, at the exclusion of charging the supplemental battery, until the main battery is charged to a main battery charge threshold level.

14 . The method of claim 12 , further comprising, determining the duration of the charging voltage is known and upon further determining that the duration of the charging voltage is at least the duration required to charge both the main battery, to the main battery charge threshold level, and the supplemental battery, to a supplemental battery charge threshold level, simultaneously charging both the main battery and the supplemental battery.

15 . The method of claim 12 , further comprising, determining the duration of the charging voltage is known and upon further determining that the duration of the charging voltage is not at least the duration required to charge both the main battery and the supplemental battery, charging the main battery, at the exclusion of the supplemental battery, to the main battery charge threshold level.

16 . The method of claim 15 , further comprising, upon determining the main battery is charged to the main battery charge threshold level, charging the supplemental battery.

17 . A vehicle, comprising:
a battery management system, further comprising a processor and a memory comprising instructions for execution by the processor; and a battery storage space, the battery storage space comprising a main battery storage portion, accommodating a main battery, and a supplemental battery storage portion, accommodating a supplemental battery, and wherein the main battery provides electrical energy to the vehicle; and wherein the battery management system is configured to activate a DCDC converter to convert a supplemental voltage, provided by the supplemental battery, to a main voltage of the main battery, wherein the supplemental voltage is dissimilar to the main voltage and causes the supplemental battery to provide electrical energy to the main battery.

18 . The vehicle of claim 17 , wherein the battery management system is further configured to:
determine the vehicle is receiving a charging voltage and, in response thereto, selectively causes one or both of the main battery and the supplemental battery to be charged; and determine a duration of the charging voltage is unknown, and in response thereto, charges the main battery, at the exclusion of charging the supplemental battery, until the main battery is charged to a main battery charge threshold level.

19 . The vehicle of claim 17 , wherein the battery management system is further configured to determine the duration of the charging voltage is known and further determine that the duration of the charging voltage is at least the duration required to charge both the main battery, and in response thereto, simultaneously charge both th

Assignees

• Nio Usa Inc

Inventors

• Ing Adam H
• Smith Alexander J
• Yellambalase Yadunandana

Classifications

• B60L53/22 Primary

  Constructional details or arrangements of charging converters specially adapted for charging electric vehicles · CPC title

• B60L2210/10

  DC to DC converters · CPC title

• B60L58/20 Primary

  having different nominal voltages · CPC title

• B60L2240/80

  Time limits · CPC title

• B60L50/66

  Arrangements of batteries · CPC title