Battery system cooling
First Claim
Patent Images
1. An electric vehicle, comprising:
- a battery system including a plurality of battery packs electrically connected together, wherein the plurality of battery packs includes at least a first battery pack and a second battery pack, and wherein the first and the second battery pack each includes a plurality of battery cells;
a cooling system configured to cool the plurality of battery packs; and
a control system including a first set point temperature for the first battery pack and a second set point temperature for the second battery pack, wherein the first set point temperature is different from the second set point temperature, and wherein the control system is configured to selectively operate the cooling system such that the first battery pack is cooled to maintain substantially the first set point temperature and the second battery pack is cooled to maintain substantially the second set point temperature.
5 Assignments
0 Petitions
Accused Products
Abstract
An electric vehicle may include a battery system with a plurality of battery packs electrically connected together. Each battery pack of the plurality of battery packs may include a plurality of battery cells. The electric vehicle may also include a cooling system configured to cool the plurality of battery packs. The electric vehicle may further include a control system configured to selectively operate the cooling system such that at least one battery pack of the plurality of battery packs is maintained at a temperature different from another battery pack of the plurality of battery packs.
-
Citations
20 Claims
-
1. An electric vehicle, comprising:
-
a battery system including a plurality of battery packs electrically connected together, wherein the plurality of battery packs includes at least a first battery pack and a second battery pack, and wherein the first and the second battery pack each includes a plurality of battery cells; a cooling system configured to cool the plurality of battery packs; and a control system including a first set point temperature for the first battery pack and a second set point temperature for the second battery pack, wherein the first set point temperature is different from the second set point temperature, and wherein the control system is configured to selectively operate the cooling system such that the first battery pack is cooled to maintain substantially the first set point temperature and the second battery pack is cooled to maintain substantially the second set point temperature. - View Dependent Claims (2, 3, 4, 5, 6, 7, 14, 15, 16)
-
-
8. An electric vehicle, comprising:
-
a battery system including a plurality of battery packs, the plurality of battery packs including a first battery pack and a second battery pack electrically connected together such that, at a same temperature, the first battery pack has a first effective impedance and the second battery pack has a second effective impedance different from the first effective impedance, wherein each battery pack of the plurality of battery packs includes a plurality of battery cells; a cooling system configured to cool the plurality of battery packs; and a control system including a different preprogrammed set point temperature for each of the first battery pack and the second battery pack, the set point temperature of the first battery pack being based on the first effective impedance and the set point temperature of the second battery pack being based on the second effective impedance, the control system being configured to selectively operate the cooling system such that the first and second battery packs are cooled to maintain substantially the respective set point temperature of the battery pack. - View Dependent Claims (9, 10, 17, 18)
-
-
11. An electric vehicle, comprising:
-
a battery system including a plurality of battery packs electrically connected together, wherein the plurality of battery packs include at least a first battery pack and a second battery pack, and wherein the first battery pack and the second battery pack each includes (a) a housing enclosing a plurality of battery cells therein, (b) a fan configured to circulate air within the housing, and (c) a liquid-air heat exchanger configured to cool the air circulating in the housing; and a control system including a first set point temperature for the first battery pack and a second set point temperature for the second battery pack, wherein the first set point temperature is different from the second set point temperature, and wherein the control system is configured to selectively operate the fan and the liquid-air heat exchanger of each of the first and second battery packs such that the first battery pack is cooled to maintain substantially the first set point temperature and the second battery pack is cooled to maintain substantially the second set point temperature. - View Dependent Claims (12, 13, 19, 20)
-
Specification