Hydraulic isotropically-pressurized battery modules
Various arrangements of pressurized battery modules are detailed herein. Such a pressurized battery module may include a sealed battery module housing. The pressurized battery module may include multiple pouch cells. Each pouch cell may be located within the sealed battery module housing. The pressurized battery module may further include an insulative oil that is pressurized within the sealed housing. This insulative oil may exert pressure on an external surface of each pouch cell within the pressurized battery module.
1. A pressurized battery module, comprising:
a sealed battery module housing;
a plurality of pouch cell arrays, wherein:
each pouch cell array comprises:
a plurality of pouch cells stacked against each other;
a first supporting plate that holds all of the the plurality of pouch cells in place within the pouch cell array;
a second supporting plate that holds all of the the plurality of pouch cells in place within the pouch cell array;
a housing top;
a housing bottom;
a first insulative seal, located between the plurality of pouch cells and the housing top, that functions as a buffer and contacts each pouch cell of the plurality of pouch cells; and
a base insulator, located between the plurality of pouch cells and the housing bottom, that functions as a second buffer and contacts each pouch cell of the plurality of pouch cells; wherein:
the plurality of pouch cells of each pouch cell array are not in contact with pouch cells of other pouch cell arrays of the pressurized battery module; and
a liquid that is pressurized within the sealed housing, wherein the liquid exerts pressure on an external surface of each pouch cell of each pouch cell array of the plurality of pouch cell arrays.
2. The pressurized battery module of claim 1 , wherein the liquid is an electrically-insulative oil.
3. The pressurized battery module of claim 1 , further comprising:
a plurality of leads; and
a polymer-based sealant, wherein the polymer-based sealant creates a seal for each pouch cell of the plurality of pouch cells through which a lead of the plurality of leads passes between the pouch cell and an external environment outside of the sealed battery module housing.
4. The pressurized battery module of claim 1 , wherein each pouch cell comprises a sulfur-based solid-state electrolyte.
5. A pressurized battery module system, comprising:
a heating system, comprising:
one or more heating elements exterior to a sealed battery module housing; and
a circulator, located within the sealed battery module housing, to circulate pressurized liquid;
the sealed battery module housing;
a plurality of pouch cell arrays, wherein:
each pouch cell array comprises:
a plurality of pouch cells stacked against each other;
a first supporting plate that holds the plurality of pouch cells in place within the pouch cell array;
a second supporting plate that holds the plurality of pouch cells in place within the pouch cell array;
a housing top;
a housing bottom;
a first insulative seal, located between the plurality of pouch cells and the housing top, that functions as a buffer and contacts each pouch cell of the plurality of pouch cells; and
a base insulator, located between the plurality of pouch cells and the housing bottom, that functions as a second buffer and contacts each pouch cell of the plurality of pouch cells; wherein:
the plurality of pouch cells of each pouch cell array are not in contact with pouch cells of other pouch cell arrays of the pressurized battery module system; and
a liquid that is pressurized within the sealed housing, wherein the liquid exerts pressure on an external surface of each pouch cell of each pouch cell array of the plurality of pouch cell arrays. of the plurality of pouch cells.
6. The pressurized battery module system of claim 5 , wherein the liquid is an electrically-insulative oil.
7. A pressurized battery apparatus, comprising:
a heating means;
a sealed housing means;
a plurality of battery cell arrays, wherein:
each battery cell array comprises:
a plurality of battery cells that are stacked against each other;
a first supporting means that holds all of the plurality of battery cells in place within the battery cell array;
a second supporting means that holds all of the plurality of battery cells in place within the battery cell array;
a housing top means;
a housing bottom means;
a first insulative seal means, located between the plurality of battery cells and the housing top means, that functions as a buffer and contacts each battery cell of the plurality of battery cells; and
a base insulator means, located between the plurality of battery cells and the housing bottom, that functions as a second buffer and contacts each battery cell of the plurality of battery cells; wherein:
the plurality of battery cells of each battery cell array are not in contact with battery cells of other battery cell arrays of the pressurized battery apparatus; and
a liquid that is pressurized within the sealed housing means, wherein the liquid exerts pressure on an external surface of each battery cell of the plurality of battery cell arrays.