Electric vehicle battery cold plate assemblies

A method of making an electric vehicle battery cold plate assembly comprising at least one enclosed cooling channel, said method comprising:

• providing a top plate having a lower major surface with at least one patterned open-faced cooling channel formed therein and intermediate land area;
• providing a battery tray having an upper major surface;
• providing an organic bonding agent/adhesive in the form of either (a) a layer or sheet of organic bonding agent/adhesive or (b) strips or a pattern of organic bonding agent/adhesive:
• applying the organic bonding agent/adhesive onto at least most or all of the upper major surface of the battery tray or so as to cover at least most or all of the intermediate land area of the top plate;
• and
• after the layer of organic bonding agent/adhesive is applied, bonding the lower major surface of the top plate and the upper major surface of the battery tray together using the applied organic bonding agent/adhesive,
• wherein only the intermediate land area of the top plate is bonded to the upper major surface of the battery tray, and the layer of organic bonding agent/adhesive forms a surface of the enclosed cooling channel.

A method of making an electric vehicle battery cold plate assembly, said method comprising:

• providing a top plate having a lower major surface with at least one patterned open-faced cooling channel formed therein and intermediate land area;
• providing a bottom plate having an upper major surface or a battery tray having an upper major surface;
• masking so as to close the opening of the cooling channel;
• applying a layer of organic bonding agent/adhesive, in liquid and/or tape form onto at least most or all of the lower major channeled surface of the top plate and optionally onto at least partially, mostly or all of the masking;
• after a layer of the organic bonding agent/adhesive is applied, removing the masking to open the coolant channels;
• and
• bonding the lower major surface of the top plate and the upper major surface of the bottom plate together using the applied organic bonding agent/adhesive,
• wherein the intermediate land area of the top plate is bonded to the upper major surface of the bottom plate, and a surface of the enclosed cooling channel is formed by a corresponding portion of the upper major surface of the bottom plate or the battery tray.