CLAMPING DEVICE FOR AN ELECTROCHEMICAL CELL STACK
A clamping device for an electrochemical cell stack is provided. The clamping device can include a first plate and a second plate. The second plate can be positionable relative to the first plate such that a space between the first plate and the second plate can be sized to receive an electrochemical cell stack. The device also can include a coupling member coupling the first plate to the second plate. At least one of the first and second plates can be movable away from the other plate. The coupling member can have a first end portion and a second end portion. The device further can include an elastic member disposed between the first end portion and the second end portion.
1 . A method of forming a battery, the method comprising:
providing a clamping device;
positioning the battery between first and second plates of the clamping device;
positioning a silicone interfacial material between the first and second plates of the clamping device;
adjusting one or more coupling members coupling the first and second plates of the clamping device;
allowing one or both of the first and second plates to move away from the other plate upon expansion of the battery;
applying at least 40 psi on the battery; and
removing the clamping device from the battery after cell formation or cell pretreatment.
2 . The method of claim 1 , further comprising charging the battery.
3 . The method of claim 1 , wherein the battery is positioned between the first and second plates prior to charging the battery for the first time.
4 . The method of claim 1 , wherein positioning the battery comprises positioning a second battery between the first and second plates.
5 . The method of claim 1 , comprising positioning the silicone interfacial material between the battery and at least one of the first and second plates.
6 . The method of claim 5 , wherein the interfacial material is configured to conform to a surface of the battery.
7 . The method of claim 1 , wherein the plates provide an applied pressure on the battery that is between about 10 psi and about 400 psi.
8 . The method of claim 7 , wherein the plates provide an applied pressure on the battery that is between about 40 psi and about 300 psi.
9 . The method of claim 8 , wherein the plates provide an applied pressure on the battery that is between about 90 psi and about 300 psi.
10 . The method of claim 9 , wherein the plates provide an applied pressure on the battery that is between about 100 psi and about 200 psi.
11 . The method of claim 1 , wherein the battery comprises an anode comprising silicon.
12 . The method of claim 1 , wherein the battery comprises an anode comprising graphite.
13 . The method of claim 1 , wherein the battery is a lithium ion battery.