EP-4737668-A1 - DOOR LOCKING DEVICE OF ENERGY STORAGE APPARATUS

EP4737668A1EP 4737668 A1EP4737668 A1EP 4737668A1EP-4737668-A1

Abstract

A door lock device of an energy storage device for a door coupled to a main body of a case of the energy storage device may include a bracket disposed on the door, and a rod bar assembly movably disposed on the main body of the case, wherein the rod bar assembly may include a rod bar slidably disposed on the main body of the case, and a lock bracket disposed on the rod bar and configured to move together with the rod bar to restrain and release the bra cket disposed on the door.

Inventors

OH, SUNGHOON

Assignees

LG Energy Solution, Ltd.

Dates

Publication Date: 20260506
Application Date: 20250227

Claims (20)

A door lock device of an energy storage device for a door coupled to a main body of a case of the energy storage device, the door lock device comprising: a bracket disposed on the door; and a rod bar assembly movably disposed on the main body of the case, wherein the rod bar assembly comprises: a rod bar slidably disposed on the main body of the case; and a lock bracket disposed on the rod bar and configured to move together with the rod bar to restrain and release the bracket disposed on the door.
The door lock device of the energy storage device of claim 1, wherein the bracket comprises a lock plate, and an end portion of the lock bracket is disposed on the lock plate in a locked state of the door.
The door lock device of the energy storage device of claim 2, wherein the lock bracket comprises a roller.
The door lock device of the energy storage device of claim 3, wherein the bracket further comprises an inclined plate inclined at one end of the lock plate.
The door lock device of the energy storage device of claim 4, wherein, when the door is switched from an unlocked state to the locked state, the roller of the lock bracket moves along the inclined plate to be disposed on the lock plate.
The door lock device of the energy storage device of claim 4, wherein the inclined plate is bent at the one end of the lock plate toward the main body of the case.
The door lock device of the energy storage device of claim 4, wherein the lock plate is disposed parallel to the door.
The door lock device of the energy storage device of claim 1, further comprising a protrusion disposed on one surface of the main body of the case.
The door lock device of the energy storage device of claim 8, wherein the rod bar assembly further comprises a fixing member disposed on the rod bar and movable together with the rod bar, and a position of the fixing member is fixed by the protrusion in an unlocked state of the door.
The door lock device of the energy storage device of claim 9, wherein the fixing member comprises a convex curved portion.
The door lock device of the energy storage device of claim 10, wherein the fixing member is formed in a strap shape, and the convex curved portion is formed in a portion of the fixing member.
The door lock device of the energy storage device of claim 10, wherein the convex curved portion is convexly curved in a direction of the protrusion.
The door lock device of the energy storage device of claim 12, wherein the convex curved portion of the fixing member is seated on the protrusion in the unlocked state of the door.
The door lock device of the energy storage device of claim 8, wherein the rod bar includes a hole extending along a movement direction thereof.
The door lock device of the energy storage device of claim 14, wherein the protrusion is inserted into the hole.
The door lock device of the energy storage device of claim 1, wherein the rod bar assembly further comprises a coupling block in contact with one surface of the main body of the case, and the rod bar is spaced apart from the one surface of the main body of the case by the coupling block.
A door lock device of an energy storage device for a door coupled to a main body of a case of the energy storage device, the door lock device comprising: a bracket disposed on the door; and a lock bracket movably disposed on the main body of the case, wherein the bracket of the door is restrained or released based on a moving direction of the lock bracket.
The door lock device of the energy storage device of claim 17, wherein the lock bracket comprises a roller.
The door lock device of the energy storage device of claim 17, further comprising: a protrusion disposed on one surface of the main body of the case; and a fixing member movable together with the lock bracket, wherein a position of the fixing member is fixed by the protrusion in an unlocked state of the door.
The door lock device of the energy storage device of claim 19, wherein the fixing member comprises a convex curved portion.

Description

[TECHNICAL FIELD] The present disclosure relates to a door lock device for a door configured to open and close an energy storage device. [BACKGROUND ART] Unlike primary batteries that cannot be recharged, secondary batteries refer to batteries that may be charged and discharged, and are applied not only to portable devices but also to electric vehicles (EVs) and hybrid electric vehicles (HEVs) that are driven by an electric drive source. Currently, the types of secondary batteries widely used include lithium ion batteries, lithium polymer batteries, nickel cadmium batteries, nickel hydrogen batteries, nickel zinc batteries, and the like. The operating voltage of these unit secondary battery cells, i.e., unit battery cells, is approximately 2.4 volts (V) to 4.6 V. Accordingly, when a higher output voltage is required, a battery pack is configured by connecting multiple battery cells in series. In addition, a battery pack is configured by connecting multiple battery cells in parallel depending on the charge and discharge capacity required for the battery pack. Accordingly, the number of battery cells included in the battery pack may be set in various ways depending on the required output voltage or charge/discharge capacity. When configuring a battery pack by connecting multiple battery cells in series/parallel, generally, at least one battery cell, or a battery module composed of multiple battery cells may be configured first, and then at least one of these battery modules and an additional component may be used to configure the battery pack. Here, the battery module refers to a component in which multiple battery cells are connected in series or parallel, and the battery pack may refer to a component in which multiple battery modules are connected in series or parallel to increase capacity, output, and the like. Recently, energy storage devices are being used to store generated power, and energy storage devices may be configured to include multiple battery modules. On one side of such an energy storage device, a door configured to open and close the energy storage device may be provided, and a door lock device capable of stably locking and unlocking the door is required. [DESCRIPTION OF THE INVENTION] [TECHNICAL OBJECTIVES] The present disclosure aims to provide a door lock device capable of stably locking and unlocking a door configured to open and close an energy storage device in the energy storage device. [TECHNICAL MEANS] According to an embodiment of the present disclosure, a door lock device of an energy storage device for a door coupled to a main body of a case of the energy storage device may include a bracket disposed on the door, and a rod bar assembly movably disposed on the main body of the case, wherein the rod bar assembly may include a rod bar slidably disposed on the main body of the case, and a lock bracket disposed on the rod bar and configured to move together with the rod bar to restrain and release the bracket disposed on the door. Furthermore, the bracket may include a lock plate, and an end portion of the lock bracket may be disposed on the lock plate in a locked state of the door. Furthermore, the lock bracket may include a roller. Furthermore, the bracket may further include an inclined plate inclined at one end of the lock plate. Furthermore, when the door is switched from an unlocked state to the locked state, the roller of the lock bracket may move along the inclined plate to be disposed on the lock plate. Furthermore, the inclined plate may be bent at the one end of the lock plate toward the main body of the case. Furthermore, the lock plate may be disposed parallel to the door. Furthermore, the door lock device of the energy storage device may further include a protrusion disposed on one surface of the main body of the case. Furthermore, the rod bar assembly may further include a fixing member disposed on the rod bar and movable together with the rod bar, and a position of the fixing member may be fixed by the protrusion in an unlocked state of the door. Furthermore, the fixing member may include a convex curved portion. Furthermore, the fixing member may be formed in a strap shape, and the convex curved portion may be formed in a portion of the fixing member. Furthermore, the convex curved portion may be convexly curved in a direction of the protrusion. Furthermore, the convex curved portion of the fixing member may be seated on the protrusion in the unlocked state of the door. Furthermore, the rod bar may include a hole extending along a movement direction thereof. Furthermore, the protrusion may be inserted into the hole. Furthermore, the rod bar assembly may further include a coupling block in contact with one surface of the main body of the case, and the rod bar may be spaced apart from the one surface of the main body of the case by the coupling block. According to an embodiment of the present disclosure, a door lock device of an energy storage device for a door coupled