Electric cell potting compound and method of making
A battery module comprising an electric cell and a potting compound associated with the electric cell. The potting compound is formed of a flame retardant component; a first component having an isocyanate reactive compound and water; and a second component having an isocyanate compound. The potting compound is a foam.
1. A battery module comprising:
an electric cell potted in a potting compound;
the potting compound comprising a cured mixture of
a flame retardant component;
a first component having
an isocyanate reactive compound and water; and
a second component having
an isocyanate compound,
wherein the potting compound is a foam.
2. The battery module of claim 1 , wherein the potting compound has at least a V2 level flame resistance as measured by the UL 94 Test for Flammability of Plastics.
3. The battery module of claim 1 , wherein the first component has a viscosity from greater than one to less than 100,000 cP, and wherein the second component has a viscosity from greater than one to less than 50,000 cP, all at a temperature from about 25° C. to about 35° C.
4. The battery module of claim 1 , wherein the first component has a viscosity from greater than one to less than 1500 cP, and wherein the second component has a viscosity from greater than one to less than 1000 cP, all at a temperature from about 25° C. to about 35° C.
5. The battery module of claim 1 , wherein the potting compound has a foam density of less than 0.50 g/cm 3 .
6. The battery module of claim 1 , wherein the flame retardant component is present in an amount of at least 15 wt. %, based on the total weight of the potting compound.
7. The battery module of claim 1 , wherein the flame retardant component is present in an amount of at least 30 wt. %, based on the total weight of the potting compound.
8. The battery module of claim 1 , wherein the flame retardant component is a liquid.
9. The battery module of claim 1 , wherein the battery module includes a plurality of electric cells, each electric cell having a bottom, a top, and a length defined therebetween the potting compound being at a substantially level height.
10. A battery module comprising:
an electric cell potted in a potting compound comprising a reaction product of
a first component having an isocyanate reactive compound;
a second component having an isocyanate compound; and
a blowing agent; and
a liquid flame retardant component present in an amount from about 15 wt. % to about 60 wt. % based on the total weight of the potting compound.
11. The battery module of claim 10 , wherein the liquid flame retardant includes a phosphate ester.
12. The battery module of claim 10 , wherein the first component has a viscosity from greater than one to less than 100,000 cP, and wherein the second component has a viscosity from greater than one to less than 50,000 cP, all at a temperature from about 25° C. to about 35° C.
13. The battery module of claim 10 , wherein the isocyanate reactive compound has an isocyanate reactive functionality of three or more.
14. The battery module of claim 10 , wherein the isocyanate compound has an isocyanate functionality of two or greater.
15. The battery module of claim 10 , wherein the potting compound further includes at least one of a crosslinking catalyst, a nucleating agent, a surfactant, or a flame-retardant enhancer, and combinations thereof.
16. The battery module of claim 10 , wherein the potting compound has at least a V2 level flame resistance as measured by the UL 94 Test for Flammability of Plastics.
17. The battery module of claim 10 , wherein the potting compound has a density of less than 0.50 g/cm 3 .
18. The battery module of claim 10 , wherein the battery module includes a plurality of electric cells, each electric cell having a bottom, a top, and a length defined therebetween, the potting compound being at a substantially level height.
19. A battery module comprising:
a first electric cell potted in a polyurethane foam potting compound,
wherein the potting compound has a density of less than 0.50 g/cm 3 , and
wherein the potting compound has at least a V2 level flame resistance as measured by the UL 94 Test for Flammability of Plastics.
20. The battery module of claim 19 , wherein the battery module includes a plurality of electric cells, each electric cell having a bottom, a top, and a length defined therebetween, the potting compound being at a substantially level height.
21. The battery module of claim 19 , wherein the potting compound includes a liquid flame retardant component in an amount of at least 15% by weight, based on the total weight of the potting compound.
22. A battery module comprising:
a polyurethane foam potting compound; and
an electric cell potted in the potting compound;
the polyurethane foam potting compound including a liquid flame
retardant component in an amount of at least 15% by weight,
based on the total weight of the potting compound.
23. The battery module of claim 22 , wherein the battery module includes a plurality of electric cells, each electric cell having a bottom, a top, and a length defined therebetween, the potting compound being at a substantially level height.