Housing assembly, movable energy storage apparatus, and energy storage system

A mobile energy storage apparatus, comprising a second housing, an energy storage unit, and a housing assembly, wherein the housing assembly comprises:

• a first housing, wherein the first housing defines a button via hole communicating an interior of the first housing with an exterior of the first housing, and the first housing is provided with a first fixing portion on an inner surface of the first housing;
• a button structure, wherein the button structure comprises a button body and a resilient arm, the button body passes through the button via hole, the button body is provided with a button protrusion protruding towards the interior of the first housing, the resilient arm is positioned inside the first housing, the resilient arm has a connecting end and a fixing end opposite to the connecting end in an extension direction of the resilient arm, the connecting end is connected to the button body, and the fixing end is connected to the first fixing portion;
• and
• a circuit board, wherein the circuit board is disposed inside the first housing and is positioned at one side of the button structure positioned facing away from the button via hole, the circuit board is provided with a control button protruding from a surface of the circuit board positioned facing towards the button structure, and the control button is positioned at a position corresponding to the button protrusion;
• wherein
• one of the circuit board and the fixing end is provided with a positioning portion, the other of the circuit board and the fixing end is provided with a fitting portion, and the fitting portion is in fit connection with the positioning portion;
• and
• the second housing is connected to the first housing, the second housing and the first housing cooperatively define an inner cavity therebetween, the energy storage unit is built in the inner cavity, and the circuit board is electrically connected to the energy storage unit.

An energy storage system having a mobile energy storage apparatus, wherein the mobile energy storage apparatus comprises a second housing, an energy storage unit, and a housing assembly, wherein the housing assembly comprises:

• a first housing, wherein the first housing defines a button via hole communicating an interior of the first housing with an exterior of the first housing, and the first housing is provided with a first fixing portion on an inner surface of the first housing;
• a button structure, wherein the button structure comprises a button body and a resilient arm, the button body passes through the button via hole, the button body is provided with a button protrusion protruding towards the interior of the first housing, the resilient arm is positioned inside the first housing, the resilient arm has a connecting end and a fixing end opposite to the connecting end in an extension direction of the resilient arm, the connecting end is connected to the button body, and the fixing end is connected to the first fixing portion;
• and
• a circuit board, wherein the circuit board is disposed inside the first housing and is positioned at one side of the button structure positioned facing away from the button via hole, the circuit board is provided with a control button protruding from a surface of the circuit board positioned facing towards the button structure, and the control button is positioned at a position corresponding to the button protrusion;
• wherein
• one of the circuit board and the fixing end is provided with a positioning portion, the other of the circuit board and the fixing end is provided with a fitting portion, and the fitting portion is in fit connection with the positioning portion;
• and
• the second housing is connected to the first housing, the second housing and the first housing cooperatively define an inner cavity therebetween, the energy storage unit is built in the inner cavity, and the circuit board is electrically connected to the energy storage unit.