Battery system with selective thermal management
First Claim
1. A battery system comprising:
- a first battery group comprising battery cells, wherein the battery cells of the first battery group each comprise liquid electrolyte, the first battery group having a first capacity and operating at a first temperature;
a second battery group comprising battery cells, wherein the battery cells of the second battery group each comprise a solid-state electrolyte, wherein the second battery group is an electrically coupled to the first battery group, the second battery group having a second capacity and operating at a second temperature, the second capacity being greater than the first capacity, the second temperature being higher than the first temperature;
a first heating module electrically coupled to the first battery group;
wherein the first heating module comprises a first thermal path thermally coupled to the battery cells of the first battery group, and a second thermal path including a first thermal segment and a second thermal segment, the first thermal segment being thermally coupled to the first battery group, the second thermal segment being thermally coupled to the battery cells of the second battery group; and
a control module programmed to cause the first battery group to power the first heating module to selectively provide heat to the battery cells of the first battery group by the first thermal and the battery cells of the second battery group by the second thermal path.
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Accused Products
Abstract
The present invention is directed to battery systems. In various embodiments, the present invention provides a battery system having a first battery group and a second battery group. The first battery group and the second battery group can share a single housing, or be positioned within separate housings. The first battery group and the second battery group can each have a plurality of cells configured in parallel, and the two groups can be electrically integrated. When operating at a low temperature, the first battery group is configured to provide electrical energy to a heating module that selectively heats up one or more segments of the second battery group. In addition, the first battery group also provides energy for initial operation of an electric vehicle or equipment. Once the selected segments of the battery group are heated up to an operating temperature, the selected segments supply electrical power to the vehicle or equipment and charge the first battery group. In addition, the selected segments of the second battery group provide electrical energy for heating other segments of the second battery group. There are other embodiments as well.
21 Citations
23 Claims
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1. A battery system comprising:
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a first battery group comprising battery cells, wherein the battery cells of the first battery group each comprise liquid electrolyte, the first battery group having a first capacity and operating at a first temperature; a second battery group comprising battery cells, wherein the battery cells of the second battery group each comprise a solid-state electrolyte, wherein the second battery group is an electrically coupled to the first battery group, the second battery group having a second capacity and operating at a second temperature, the second capacity being greater than the first capacity, the second temperature being higher than the first temperature; a first heating module electrically coupled to the first battery group; wherein the first heating module comprises a first thermal path thermally coupled to the battery cells of the first battery group, and a second thermal path including a first thermal segment and a second thermal segment, the first thermal segment being thermally coupled to the first battery group, the second thermal segment being thermally coupled to the battery cells of the second battery group; and a control module programmed to cause the first battery group to power the first heating module to selectively provide heat to the battery cells of the first battery group by the first thermal and the battery cells of the second battery group by the second thermal path. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification