Battery container

Abstract

A battery container is disclosed. The battery container according to an embodiment of the present invention comprises: a case which provides a space therein, and is provided with a locking assembly; a battery cell located in the case; and a door which is coupled to the case and is provided with a first latch portion, wherein the locking assembly may comprise: a second latch portion coupled to the first latch portion; a locking portion which is coupled to the second latch portion and fixes the second latch portion; an elastic member providing the locking portion with a recovery force; and a trigger member which supports the locking portion and restricts the movement of the locking portion.

Description

Battery container

[0001] The present invention relates to a battery container.

[0002] This application is a priority claim application for Korean Patent Application No. 10-2024-0143206 filed on October 18, 2024, and all contents disclosed in the specification and drawings of said application are incorporated into this application by reference.

[0003] Currently commercialized secondary batteries include nickel-cadmium, nickel-hydrogen, nickel-zinc, and lithium secondary batteries. Among these, lithium secondary batteries are gaining attention for their advantages, such as the ability to freely charge and discharge with almost no memory effect compared to nickel-based secondary batteries, a very low self-discharge rate, and high energy density.

[0004] Recently, as issues such as power shortages and eco-friendly energy have come to the forefront, Energy Storage Systems (ESS) designed to store generated electricity are receiving increased attention. For instance, the Smart Grid System is being proposed as a solution to regulate power supply and demand. The amount of electricity consumed by consumers is not always constant and can fluctuate frequently. A typical example is the sharp increase in electricity usage during the summer afternoon due to the use of air conditioning, followed by a sharp decrease at night. While power consumption is inconsistent and fluctuates frequently, it is realistically difficult for the power supply side to match such consumption levels, even if production is adjusted to some extent. Consequently, this imbalance between supply and consumption can lead to either a surplus or a shortage of power; the Smart Grid System aims to resolve this problem by flexibly storing and regulating electricity. The concept behind the Smart Grid System is to store electricity when there is a surplus in a specific location or time, and then supply that stored electricity to areas or times when there is a power shortage. One of the key components for building such a smart grid system is the energy storage system for storing electricity. Furthermore, with the recent full-scale commercialization of electric vehicles, energy storage systems can also be utilized in facilities for charging electric vehicles, such as charging stations.

[0005] Such energy storage systems may include multiple battery containers. Furthermore, blast pressure reduction is required to prevent the battery containers from exploding in the event of a thermal event. To meet these requirements, there is an increasing need to vent flammable or explosive gases from inside the battery containers to the outside.

[0006] The present invention aims to solve the aforementioned problems and other problems.

[0007] Another objective of the present invention may be to provide a battery container capable of discharging gas inside the case to the outside when a thermal event occurs.

[0008] Another objective of the present invention may be to provide a battery container capable of maintaining a sealed state of the case while no thermal event occurs.

[0009] Another objective of the present invention may be to provide a battery container with improved thermal safety.

[0010] A battery container according to one embodiment of the present invention for achieving the above-mentioned purpose comprises: a case having a space inside and a locking assembly; a battery cell located inside the case; and a door coupled to the case and having a first locking part, wherein the locking assembly may include: a second locking part coupled to the first locking part; a locking part coupled to the second locking part and fixing the second locking part; an elastic member providing a restoring force to the locking part; and a trigger member supporting the locking part and restricting the movement of the locking part.

[0011] In addition, the trigger member may be configured to be damaged upon the occurrence of a thermal event.

[0012] In addition, the trigger member may include a glass bulb.

[0013] In addition, the trigger member may include a melting member.

[0014] In addition, the above trigger member may be provided in multiple numbers.

[0015] Additionally, the locking assembly further includes a projection formed on the second locking portion, and the locking portion may include a fixing hole into which the projection is inserted.

[0016] In addition, the above-mentioned projection can be separated from the above-mentioned fixing hole if the above-mentioned trigger member is damaged.

[0017] Additionally, the door includes a first rotation axis rotatably coupled to the first locking part, and the locking assembly may further include a second rotation axis rotatably coupled to the second locking part.

[0018] Additionally, the battery container may further include a first torsion spring coupled to the first rotation axis and providing a restoring force to the first locking part; and a second torsion spring coupled to the second rotation axis and providing a restoring force to the second locking part.

[0019] In addition, the rotational direction in which the first torsion spring provides a restoring force and the rotational direction in which the second torsion spring provides a restoring force may be opposite to each other.

[0020] Additionally, the locking assembly further includes an opener extending from the second locking portion, and the opener can push out the first locking portion as the second locking portion rotates.

[0021] In addition, the door may further include a handle extending from the first locking part.

[0022] A container system according to one aspect of the present invention includes a battery container of the present invention.

[0023] An energy storage system according to one aspect of the present invention includes a battery container of the present invention.

[0024] According to at least one of the embodiments of the present invention, when a thermal event occurs, gas inside the case can be discharged to the outside.

[0025] According to at least one of the embodiments of the present invention, the sealed state of the case can be maintained while no thermal event occurs.

[0026] According to at least one of the embodiments of the present invention, a battery container with improved thermal safety can be provided.

[0027] The following drawings attached to this specification illustrate preferred embodiments of the present invention and serve to further enhance understanding of the technical concept of the present invention together with the detailed description of the invention provided below; therefore, the present invention should not be interpreted as being limited only to the matters described in such drawings.

[0028] FIG. 1 is a drawing showing a battery container according to one embodiment of the present invention.

[0029] Figure 2 is a drawing showing the door of the battery container of Figure 1 opened.

[0030] Figure 3 is an enlarged view of the door of Figure 2.

[0031] Figure 4 is an enlarged view of the interior of the battery container of Figure 2.

[0032] Figure 5 is a drawing showing the locking assembly of the battery container of Figure 2.

[0033] Figure 6 is an enlarged view of section C of Figure 5.

[0034] Figure 7 is a diagram showing the change in Figure 6 when the internal temperature of the battery container rises.

[0035] Figure 8 is a drawing showing a modified embodiment of Figure 6.

[0036] Figure 9 is a drawing showing the cross-sectional configuration along the cutting line B-B' of Figure 5.

[0037] Figure 10 is a diagram showing the change in Figure 9 when the internal temperature of the battery container rises.

[0038] FIG. 11 is a drawing showing the cross-sectional configuration along the cutting line A-A' of FIG. 1.

[0039] FIGS. 12 to 16 are drawings showing the changes in FIG. 11 sequentially when the internal temperature of the battery container rises.

[0040] Figure 17 is a diagram showing the opening of the door when the internal temperature of the battery container rises.

[0041] Hereinafter, embodiments of the present invention will be described in detail with reference to the attached drawings. Prior to this, terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, and should be interpreted in a meaning and concept consistent with the technical spirit of the present invention, based on the principle that the inventor can appropriately define the concept of the terms to best describe his invention.

[0042] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings are merely examples of the present invention and do not represent all aspects of the technical concept of the present invention; thus, it should be understood that various equivalents and modifications that can replace them may exist at the time of filing this application.

[0043] FIG. 1 is a drawing showing a battery container (1000) according to an embodiment of the present invention. FIG. 2 is a drawing showing the door (200) of the battery container (1000) of FIG. 1 open. FIG. 3 is an enlarged drawing of the door (200) of FIG. 2. FIG. 4 is an enlarged drawing of the interior of the battery container (1000) of FIG. 2.

[0044] Referring to FIGS. 1 to 4, the battery container (1000) may include a case (100). The case (100) may provide space inside. The case (100) may form the exterior of the battery container (1000).

[0045] The battery container (1000) may include a battery cell (510). The battery cell (510) may represent a secondary battery. In particular, the battery cell (510) may be a pouch-type secondary battery. However, the shape of the battery cell (510) is not limited to a pouch shape and may have various shapes, such as a cylindrical shape or a rectangular shape. The battery cell (510) may be provided in multiple numbers. The battery cell (510) may be accommodated inside the case (100).

[0046] The battery container (1000) may include a door (200). The door (200) may form the exterior of the battery container (1000). The door (200) may be positioned on the front of the case (100). The door (200) may be installed, coupled, or fastened to the case (100). The door (200) may open and close the interior of the case (100). The door (200) may include a first locking part (221).

[0047] The battery container (1000) may include a locking assembly (300). The case (100) may be equipped with a locking assembly (300). The locking assembly (300) may include a second locking part (321) that is coupled to a first locking part (221). The first locking part (221) and the second locking part (321) may be hook-coupled. The first locking part (221) and the second locking part (321) may be configured to be repeatedly coupled or uncoupled.

[0048] The locking assembly (300) may include a locking portion (350). The locking portion (350) may be coupled, fastened, fixed, or installed to the second locking portion (321). The locking portion (350) may restrict the movement of the second locking portion (321). The locking portion (350) may restrict the rotation of the second locking portion (321).

[0049] The locking assembly (300) may include an elastic member (360). The elastic member (360) may provide a restoring force to the locking portion (350). For example, the elastic member (360) may be a coil spring. The elastic member (360) may push the locking portion (350) away from the second locking portion (321). The elastic member (360) may support the locking portion (350). The elastic member (360) may be provided in multiple numbers.

[0050] The locking assembly (300) may include a trigger member (370). The trigger member (370) may support the locking portion (350). The trigger member (370) may restrict the movement of the locking portion (350). The trigger member (370) may function as a stopper that restricts the movement of the locking portion (350). The locking portion (350) may be located between the elastic member (360) and the trigger member (370). One end of the locking portion (350) may be supported by the trigger member (370), and the other end of the locking portion (350) may be supported by the elastic member (360).

[0051] The trigger member (370) can release the state of supporting the locking member (350). When the internal temperature of the battery container (1000) rises, the trigger member (370) can release the state of supporting the locking member (350). When a thermal event occurs inside the battery container (1000), the trigger member (370) can release the state of supporting the locking member (350). As the state of supporting the trigger member (370) is released, the locking member (350) can move by the restoring force of the elastic member (360). As a result, the coupling of the first locking member (221) and the second locking member (321) can be released. And the door (200) can be opened. By opening the door (200), gas inside the case (100) can be discharged, and the temperature or pressure inside the case (100) can be reduced.

[0052] Referring to FIGS. 1 through 4, the door (200) may include a handle (222). The door (200) may include a first part (220). The first part (220) may be rotatably configured. The first part (220) may include a first locking part (221). The first part (220) may include a handle (222). The first locking part (221) and the first part (220) may be formed integrally. The handle (222) may extend from the first locking part (221). The handle (222) may be exposed to the outside.

[0053] The user can release the connection between the first locking part (221) and the second locking part (321) by rotating the handle (222). The user can open the door (200) by pulling the handle (222).

[0054] Referring to FIGS. 1 through 4, the case (100) may include a frame (160). The frame (160) may form the exterior of the battery container (1000). The frame (160) may include a plurality of beams or a plurality of bars. The frame (160) may have a rectangular shape.

[0055] The case (100) may include a base panel (110). The base panel (110) may form the exterior of the battery container (1000). The base panel (110) may be coupled, fastened, fixed, installed, or attached to the frame (160). The base panel (110) may form the bottom surface of the case (100).

[0056] The case (100) may include side panels (120). The side panels (120) may form the exterior of the battery container (1000). The side panels (120) may be coupled, fastened, fixed, installed, or attached to the frame (160). The side panels (120) may be provided in multiple numbers. For example, three side panels (120) may be provided. The side panels (120) may form both sides of the case (100). The side panels (120) may form the rear of the case (100).

[0057] The case (100) may include a top panel (150). The top panel (150) may form the exterior of the battery container (1000). The top panel (150) may be coupled, fastened, fixed, installed, or attached to the frame (160). The top panel (150) may form the top surface of the case (100).

[0058] A door (200) may form the front of a battery container (1000). The door (200) may include an HVAC (250). The HVAC (250) may control the temperature inside the case (100). The HVAC (250) may raise or lower the temperature inside the case (100). The HVAC (250) may ventilate the air inside the case (100). The HVAC (250) may filter dust inside the case (100). The HVAC (250) may control the humidity inside the case (100).

[0059] The door (200) may include a first housing (210). A first part (220) may be installed inside the first housing (210). A first rotation axis (230) may be installed in the first housing (210). The first rotation axis (230) may extend along the vertical direction or the Z-axis direction. The first rotation axis (230) may penetrate the first part (220). The first part (220) may be installed rotatably with respect to the first rotation axis (230). A first locking part (221) may be located on the inside of the door (200). A handle (222) may be located on the outside of the door (200).

[0060] The door (200) may include a first torsion spring (240). The first torsion spring (240) may be coupled to a first rotation axis (230). The first torsion spring (240) may be provided in multiple numbers. The first torsion spring (240) may provide a restoring force to the first part (220). For example, the first torsion spring (240) may provide a restoring force in a clockwise direction for rotation of the first part (220).

[0061] The battery container (1000) may include a battery pack (500) inside. The battery pack (500) may include a plurality of battery cells (510). The battery pack (500) may be provided in multiple numbers.

[0062] A rack frame (400) may be provided inside a case (100). The rack frame (400) may accommodate a plurality of battery packs (500). A plurality of battery packs (500) may be installed, fastened, coupled, or fixed to the rack frame (400). For example, a plurality of battery packs (500) may be arranged along the vertical direction or the Z-axis direction. A plurality of battery packs (500) may be arranged along the horizontal direction or the Y-axis direction. A plurality of battery packs (500) may be arranged along the front-rear direction or the X-axis direction. A battery pack (500) may also be referred to as a battery module (500), a battery assembly (500), or a battery stack (500).

[0063] FIG. 5 is a drawing showing the locking assembly (300) of the battery container (1000) of FIG. 2. FIG. 6 is an enlarged drawing of section C of FIG. 5. FIG. 7 is a drawing showing the change of FIG. 6 when the internal temperature of the battery container (1000) rises.

[0064] Referring to FIGS. 4 through 7, the locking assembly (300) may be installed inside the case (100). The locking assembly (300) may be installed on the inner surface of the side panel (120). For example, the locking assembly (300) may be installed on the inner surface of the right side panel (120). The locking assembly (300) may be installed on the inner side of the frame (160).

[0065] The locking assembly (300) may include a second housing (310). The second housing (310) may provide space inside. A second part (320) may be installed in the second housing (310). The second part (320) may include a second locking portion (321).

[0066] The second rotation axis (330) may be installed in the second housing (310). The second rotation axis (330) may extend along the vertical direction or the Z-axis direction. The second rotation axis (330) may penetrate the second part (320). The second part (320) may be installed rotatably with respect to the second rotation axis (330).

[0067] The locking assembly (300) may include a second torsion spring (340). The second torsion spring (340) may be coupled to a second rotation axis (330). The second torsion spring (340) may be provided in multiple numbers. The second torsion spring (340) may provide a restoring force to the second part (320). For example, the second torsion spring (340) may provide a restoring force in a counterclockwise direction for rotation of the second part (320).

[0068] The second housing (310) may include an inner wall (311) located at the rear of the second rotation axis (330). A locking part (350) may be located at the rear of the inner wall (311). The locking part (350) may be located between the rear wall (312) and the inner wall (311). An elastic member (360) may be disposed between the locking part (350) and the inner wall (311). For example, the elastic member (360) may be a coil spring. The elastic member (360) may be provided in multiple numbers. The elastic member (360) may provide a restoring force to the locking part (350). The elastic member (360) may provide a restoring force that pushes the locking part (350) backward. The locking part (350) may secure the second part (320). The locking part (350) can fix the second part (320) so that it does not rotate.

[0069] The locking assembly (300) may include a trigger member (370) provided in the second housing (310). The trigger member (370) may be provided in the rear wall (312) of the second housing (310). The trigger member (370) may include a holder (371). The holder (371) may protrude from the rear wall (312). The trigger member (370) may include a glass bulb (372). The glass bulb (372) may be located inside the holder (371). The glass bulb (372) may support the locking portion (350). The locking portion (350) may be located between the glass bulb (372) and the elastic member (360). The glass bulb (372) and the elastic member (360) may be in equilibrium. The locking part (350) can be fixed between the glass bulb (372) and the elastic member (360).

[0070] The trigger member (370) may be configured to be damaged upon the occurrence of a thermal event. As the trigger member (370) is damaged, the trigger member (370) may fail to support the locking member (350). As the trigger member (370) is damaged, the locking member (350) may move backward or along the -X-axis direction by means of the elastic member (360). As the locking member (350) moves, the fixation of the second part (320) may be released. As the locking member (350) moves, the second part (320) may rotate.

[0071] The glass bulb (372) may be configured to break above a certain temperature. For example, the glass bulb (372) may contain liquid inside, and when the temperature inside the case (100) rises, the volume of the liquid expands, thereby destroying the glass bulb (372). The glass bulb (372) may be destroyed and detached from the holder (371). The destroyed glass bulb (372) may fall downward due to gravity. As the glass bulb (372) is damaged, the glass bulb (372) may fail to support the locking part (350). As the glass bulb (372) is damaged, the locking part (350) may move backward or along the -X axis direction by means of the elastic member (360). As the locking part (350) moves, the fixation of the second part (320) may be released. As the locking part (350) moves, the second part (320) can rotate.

[0072] The trigger member (370) may be provided in multiple numbers. The holder (371) may be provided in multiple numbers. The glass bulb (372) may be provided in multiple numbers to correspond one-to-one with the holder (371). The locking part (350) can be moved by the elastic member (360) only when all trigger members (370) are damaged. The locking part (350) can be moved by the elastic member (360) only when all glass bulbs (372) are destroyed.

[0073] By providing multiple trigger members (370), the locking part (350) can be moved accurately. Even if the temperature inside the case (100) does not rise, some trigger members (370) may be damaged by vibration or shock applied to the battery container (1000). For example, the glass bulb (372) may be damaged by the impact of a user manually opening and closing the door (200). However, by providing multiple trigger members (370), the locking part (350) may not move even if some trigger members (370) are damaged. By providing multiple trigger members (370), the locking part (350) can be moved when the temperature inside the case (100) rises.

[0074] By providing a plurality of trigger members (370), vibrations or shocks applied to each glass bulb (372) can be dispersed. As a result, damage to the glass bulb (372) due to vibrations or shocks can be prevented.

[0075] The trigger member (370) may include a pad (373). The pad (373) may be located at the front end of the glass bulb (372). The pad (373) may be located between the glass bulb (372) and the locking part (350). The pad (373) may be attached, coupled, or fixed to the front end of the glass bulb (372). The pad (373) may also be attached, coupled, or fixed to the rear end of the locking part (350).

[0076] The pad (373) may be located at the rear end of the glass bulb (372). The pad (373) may be located between the glass bulb (372) and the holder (371). The pad (373) may be attached, coupled, or fixed to the rear end of the glass bulb (372). The pad (373) may also be attached, coupled, or fixed to the holder (371). The pad (373) may include an elastic material. For example, the pad (373) may include a rubber material. The pad (373) may absorb vibrations or shocks applied to the battery container (1000). The pad (373) may prevent the glass bulb (372) from being damaged by vibrations or shocks.

[0077] FIG. 8 is a drawing showing a modified embodiment of FIG. 6. Referring to FIG. 8, the trigger member (370) may include a melting member (374). The melting member (374) may include a metal material that can melt at a low temperature. For example, the melting member (374) may be a fusible link.

[0078] The melting member (374) may be located inside the holder (371). The melting member (374) may support the locking member (350). The locking member (350) may be located between the melting member (374) and the elastic member (360). The melting member (374) and the elastic member (360) may be in equilibrium. The locking member (350) may be fixed between the melting member (374) and the elastic member (360).

[0079] The melting member (374) may be configured to melt above a specific temperature. As the melting member (374) melts, the melting member (374) may not be able to support the locking member (350). As the melting member (374) melts, the locking member (350) may move backward or along the -X-axis direction by means of the elastic member (360). As the locking member (350) moves, the fixation of the second part (320) may be released. As the locking member (350) moves, the second part (320) may rotate.

[0080] FIG. 9 is a drawing showing a cross-sectional configuration along the cutting line B-B' of FIG. 5. Referring to FIG. 9, the second part (320) may include a projection (323). The projection (323) may protrude from the second locking part (321). The projection (323) may be formed on the second locking part (321). The locking part (350) may include a fixing hole (351). The projection (323) may be inserted into the fixing hole (351). By inserting the projection (323) into the fixing hole (351), the locking part (350) can fix the second part (320).

[0081] FIG. 10 is a diagram showing the change in FIG. 9 when the internal temperature of the battery container (1000) rises. Referring to FIG. 10, when the internal temperature of the battery container (1000) rises, the trigger member (370) may be damaged. All of the multiple glass bulbs (372) may be destroyed. And the locking part (350) may move along the rearward or -X-axis direction by means of the elastic member (360). The projection (323) may detach from the fixing hole (351). The second part (320) may rotate due to the restoring force of the second torsion spring (340).

[0082] FIG. 11 is a drawing showing a cross-sectional configuration along the cutting line A-A' of FIG. 1. Referring to FIG. 11, when the door (200) is closed, the first locking part (221) and the second locking part (321) can be engaged with each other. The first locking part (221) can be rotatably coupled to the first rotation axis (230). The second locking part (321) can be rotatably coupled to the second rotation axis (330).

[0083] The first torsion spring (240) can provide a restoring force that rotates the first locking part (221) or the first part (220) in a clockwise direction. The second torsion spring (340) can provide a restoring force that rotates the second locking part (321) or the second part (320) in a counterclockwise direction. The direction of rotation in which the first torsion spring (240) provides a restoring force and the direction of rotation in which the second torsion spring (340) provides a restoring force may be opposite to each other.

[0084] The projection (323) is inserted into the fixed hole (351), and the trigger member (370) supports the locking part (350), so that the second part (320) can be maintained in a fixed state.

[0085] FIGS. 12 to 16 are drawings showing the changes in FIG. 11 sequentially when the internal temperature of the battery container (1000) rises.

[0086] Referring to FIG. 12, the trigger member (370) may be damaged due to the rise in internal temperature of the battery container (1000). When all of the plurality of glass bulbs (372) are destroyed, the locking part (350) may move backward or in the -X axis direction by means of the elastic member (360). And the fixing hole (351) may detach from the projection (323).

[0087] Referring to FIG. 13, the second part (320) may include an opener (322). The opener (322) may extend from the second locking part (321). The second part (320) may be formed integrally. When the connection between the locking part (350) and the second part (320) is released, the second part (320) may rotate counterclockwise around the second rotation axis (330) by the second torsion spring (340). As the second part (320) rotates, the locking connection between the first locking part (221) and the second locking part (321) may be released. As the second part (320) rotates, the opener (322) may come into contact with the first locking part (221). As the second part (320) rotates, the opener (322) can push the first locking part (221) to cause the first part (220) to rotate clockwise.

[0088] Referring to FIGS. 14 through 16, as the second part (320) rotates counterclockwise around the second rotation axis (330), the opener (322) can push out the first locking part (221). As the opener (322) pushes out the first locking part (221), the door (200) can be opened. The door (200) can be opened by rotating clockwise. The opener (322) can open the door (200) until the second part (320) reaches the maximum angle at which it can rotate counterclockwise.

[0089] FIG. 17 is a drawing showing the opening of the door (200) when the internal temperature of the battery container (1000) rises. Referring to FIG. 17, when the internal temperature of the battery container (1000) rises, the door (200) can be opened by the locking assembly (300). Due to the opening of the door (200), gas inside the battery container (1000) can be discharged to the outside.

[0090] When the internal temperature of the battery container (1000) rises, the locking assembly (300) can open the door (200) without using power or electrical energy. The locking assembly (300) can improve the thermal safety of the battery container (1000).

[0091] The container system may include a plurality of battery containers (1000). The plurality of battery containers (1000) may be physically or electrically connected.

[0092] The container system may include a control module. The control module may be electrically connected to a plurality of battery containers (1000) included in the container system. The control module may control the charging and discharging of the plurality of battery containers (1000). Additionally, the control module may obtain status information of the plurality of battery containers (1000).

[0093] In addition, the container system may be configured to additionally include a firefighting module for controlling thermal events.

[0094] An energy storage system (ESS) according to the present invention may include a plurality of battery containers (1000) according to the present invention. The energy storage system may include a plurality of container systems. And the container system may include a plurality of battery containers (1000). Such an energy storage system may form a link group by combining a plurality of battery containers (1000) and a control module.

[0095] Meanwhile, although terms indicating directions such as up, down, left, right, front, and back have been used in this specification, these terms are used merely for convenience of explanation, and it is obvious to those skilled in the art that they may vary depending on the location of the object or the position of the observer.

[0096] As described above, although the present invention has been explained by limited embodiments and drawings, the present invention is not limited thereto, and it is obvious that various modifications and variations are possible within the scope of the technical spirit of the present invention and the equivalent scope of the claims described below by those skilled in the art to which the present invention belongs.

Claims

1. A case that provides an internal space and is equipped with a locking assembly; A battery cell located inside the above case; and, It includes a door coupled to the above case and having a first locking part, and The above locking assembly is: A second locking part coupled to the first locking part above; A locking part coupled to the second locking part and securing the second locking part; An elastic member providing a restoring force to the above-mentioned locking part; and, A battery container including a trigger member that supports the locking part and restricts the movement of the locking part.

2. In Paragraph 1, The above trigger member is, A battery container configured to be damaged upon the occurrence of a thermal event.

3. In Paragraph 1, The above trigger member is, Battery container containing a glass bulb.

4. In Paragraph 1, The above trigger member is, Battery container including a melting member.

5. In Paragraph 1, The above trigger member is, Multiple battery containers.

6. In Paragraph 1, The above locking assembly is, It further includes a projection formed on the second locking part, and The above locking part is, A battery container including a fixing hole into which the above-mentioned protrusion is inserted.

7. In Paragraph 6, The above protrusion is, A battery container that separates from the fixing hole when the above trigger member is damaged.

8. In Paragraph 1, The above door is, It includes a first rotation axis rotatably coupled to the first locking part, and The above locking assembly is, A battery container further comprising a second rotating shaft rotatably coupled to the second locking part.

9. In Paragraph 8, A first torsion spring coupled to the first rotational axis and providing a restoring force to the first locking part; and, A battery container further comprising a second torsion spring coupled to the second rotation axis and providing a restoring force to the second locking part.

10. In Paragraph 9, A battery container in which the rotational direction in which the first torsion spring provides a restoring force and the rotational direction in which the second torsion spring provides a restoring force are opposite to each other.

11. In Paragraph 9, The above locking assembly is, It further includes an opener extending from the second locking part, and The above opener is, A battery container that pushes out the first locking part as the second locking part rotates.

12. In Paragraph 1, The above door is, A battery container further comprising a handle extending from the first locking portion.

13. A container system comprising a battery container according to any one of claims 1 to 12.

14. An energy storage system comprising a battery container according to any one of claims 1 to 12.

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