Door locking device of energy storage apparatus

Abstract

A door locking device coupled to a case body of an energy storage apparatus according to an embodiment of the present invention comprises: a bracket disposed on the door; and a rod bar assembly movably disposed in the case body. The rod bar assembly includes: a rod bar slidably disposed in the case body; and a locking bracket that is disposed on the rod bar and moves with the rod bar to restrain and release the bracket of the door.

Description

Door lock for energy storage device

[0001] The present invention relates to a locking device for a door capable of opening and closing an energy storage device.

[0002] Secondary batteries, unlike primary batteries that cannot be recharged, are batteries that can be charged and discharged. They are used not only in portable devices but also in electric vehicles (EVs) and hybrid electric vehicles (HEVs) that are driven by electrical power sources.

[0003] Currently, widely used types of secondary batteries include lithium-ion batteries, lithium polymer batteries, nickel-cadmium batteries, nickel-metal hydride batteries, and nickel-zinc batteries. The operating voltage of these unit secondary battery cells, i.e., unit battery cells, is approximately 2.5 V to 4.6 V. Therefore, when a higher output voltage is required, multiple battery cells are connected in series to form a battery pack. Furthermore, depending on the charge / discharge capacity required for the battery pack, multiple battery cells are connected in parallel to form a battery pack. Therefore, the number of battery cells included in the battery pack can be set in various ways depending on the required output voltage or charge / discharge capacity.

[0004] When configuring a battery pack by connecting multiple battery cells in series / parallel, it is common to first configure a battery module comprising at least one battery cell, preferably multiple battery cells, and then use at least one such battery module and add other components 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 and output, etc.

[0005] Recently, energy storage devices are being used to store generated electricity, and the energy storage devices can be configured to include multiple battery modules.

[0006] A door for opening and closing the energy storage device may be arranged on one side of the energy storage device, and a locking device for the door that can reliably lock and unlock the door is required.

[0007] The purpose of the present invention is to provide a door locking device capable of stably locking and unlocking a door for opening and closing an energy storage device.

[0008] A door locking device coupled to a case body of an energy storage device according to one embodiment of the present invention includes a bracket disposed on the door; and a load bar assembly movably disposed on the case body; wherein the load bar assembly includes a load bar slidably disposed on the case body; and a locking bracket disposed on the load bar and moving together with the load bar to lock and release the bracket of the door.

[0009] Additionally, the bracket includes a locking plate, and an end of the locking bracket is placed on the locking plate when the door is in a locked state.

[0010] Additionally, the locking bracket includes a roller.

[0011] Additionally, the bracket further includes an inclined plate at one end of the locking plate.

[0012] Additionally, when the door is switched from an unlocked state to a locked state, the roller of the lock bracket moves along the inclined plate and is positioned on the lock plate.

[0013] Additionally, the inclined plate is bent toward the body of the case at one end of the locking plate.

[0014] Additionally, the lock plate is arranged parallel to the door.

[0015] Additionally, it further includes a protrusion arranged on one side of the main body of the case.

[0016] In addition, the load bar assembly further includes a fixing member that is arranged on the load bar and is movable together with the load bar, and the position of the fixing member is fixed by the protrusion when the door is in an unlocked state.

[0017] Additionally, the fixing member includes a convex curved portion.

[0018] In addition, the above-mentioned fixing member is formed in a belt shape, and a convex curved portion is formed in a portion of the above-mentioned fixing member.

[0019] Additionally, the above-mentioned curved portion is convexly curved in the direction of the protrusion.

[0020] Additionally, the curved portion of the fixed member is secured to the projection when the door is in an unlocked state.

[0021] Additionally, the load bar includes a hole extending along its direction of movement.

[0022] Additionally, the protrusion is inserted into the hole.

[0023] In addition, the load bar assembly further includes a coupling block that contacts one surface of the case body, and the load bar is separated from one surface of the case body by the coupling block.

[0024] A locking device of a door coupled to a case body of an energy storage device according to one embodiment of the present invention includes a bracket arranged on the door; and a locking bracket movably arranged on the case body; and is characterized in that the bracket of the door is locked and released according to the movement direction of the locking bracket.

[0025] According to one embodiment of the present invention, a door locking device for stably locking and unlocking a door in an energy storage device is provided, and the door locking device according to one embodiment of the present invention maintains the unlocked state of the door after the door is unlocked, so that interference can be eliminated when opening and closing the door.

[0026] FIG. 1 is a perspective view of an energy storage device according to one embodiment of the present invention.

[0027] Figure 2 is an exploded perspective view of the energy storage device illustrated in Figure 1.

[0028] FIG. 3 is a perspective view of a door in an energy storage device according to one embodiment of the present invention.

[0029] FIG. 4 is a perspective view of a case with the door removed from an energy storage device according to one embodiment of the present invention.

[0030] FIG. 5 is a perspective view of a load bar assembly in a door lock device of an energy storage device according to one embodiment of the present invention.

[0031] Fig. 6 is a detailed view of a portion of the load bar assembly in Fig. 5.

[0032] FIG. 7 is a drawing showing a door lock state in a door lock device of an energy storage device according to one embodiment of the present invention.

[0033] FIG. 8 is a drawing showing a door unlocked state in a door locking device of an energy storage device according to one embodiment of the present invention.

[0034] FIG. 9 is a partial detailed view of a load bar assembly in a door unlocked state of an energy storage device according to one embodiment of the present invention.

[0035] Figure 10 is a perspective view of a battery module in one embodiment of the present invention.

[0036] FIG. 11 is a drawing showing the inside of a battery module in one embodiment of the present invention.

[0037] FIG. 12 is a drawing showing an example of a battery cell in one embodiment of the present invention.

[0038] FIG. 13 is a drawing illustrating a support frame that supports a battery module in an energy storage device according to one embodiment of the present invention.

[0039] Fig. 14 is a detailed drawing of the vertical support member in Fig. 13.

[0040] Fig. 15 is a detailed drawing of the lower support in Fig. 13,

[0041] Fig. 16 is a detailed drawing of the upper support in Fig. 13,

[0042] Figure 17 is a front view of the battery module mounted on the upper support in Figure 13.

[0043] FIG. 18 is a perspective view of a support frame having a battery module mounted thereon in one embodiment of the present invention.

[0044] FIG. 19 is a perspective view of a support frame equipped with a battery module, viewed from another angle, in one embodiment of the present invention.

[0045]

[0046] The advantages and features of the present invention, and the methods for achieving them, will become clearer with reference to the embodiments described in detail below together with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms. These embodiments are provided only to ensure that the disclosure of the present invention is complete and to fully inform those skilled in the art of the scope of the invention, and the present invention is defined only by the scope of the claims. Accordingly, in some embodiments, well-known process steps, well-known device structures, and well-known techniques are not specifically described to avoid ambiguity in the interpretation of the present invention. Like reference numerals refer to like elements throughout the specification.

[0047] In order to clearly represent multiple layers and regions in the drawings, the thickness may be enlarged. Similar parts are designated by the same drawing reference numerals throughout the specification. When an element such as a layer, film, region, or plate is said to be "over" another element, this includes not only the case where it is "directly over" that element but also the case where there are other elements in between. Conversely, when an element is said to be "directly over" another element, this means that there are no other elements in between. Furthermore, when an element such as a layer, film, region, or plate is said to be "under" another element, this includes not only the case where it is "directly under" that element but also the case where there are other elements in between. Conversely, when an element is said to be "directly under" another element, this means that there are no other elements in between.

[0048] A door lock device of an energy storage device according to a preferred embodiment of the present invention is described in detail with reference to the drawings.

[0049] FIG. 1 is a perspective view of an energy storage device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view of the energy storage device illustrated in FIG. 1, FIG. 3 is a perspective view of a door in an energy storage device according to an embodiment of the present invention, FIG. 4 is a perspective view of a case with the door removed in an energy storage device according to an embodiment of the present invention, FIG. 5 is a perspective view of a load bar assembly in a door locking device of an energy storage device according to an embodiment of the present invention, FIG. 6 is a partial detailed view of the load bar assembly in FIG. 5, FIG. 7 is a view showing a door locked state in a door locking device of an energy storage device according to an embodiment of the present invention, FIG. 8 is a view showing a door unlocked state in a door locking device of an energy storage device according to an embodiment of the present invention, FIG. 9 is a partial detailed view of a load bar assembly in a door unlocked state in a door locking device of an energy storage device according to an embodiment of the present invention, and FIG. 10 is a partial detailed view of a battery module in an embodiment of the present invention. FIG. 11 is a perspective view showing the inside of a battery module in one embodiment of the present invention, FIG. 12 is a view showing an example of a battery cell in one embodiment of the present invention, FIG. 13 is a view showing a support frame for supporting a battery module in an energy storage device according to one embodiment of the present invention, FIG. 14 is a detailed view of a vertical support member in FIG. 13, FIG. 15 is a detailed view of a lower support in FIG. 13, FIG. 16 is a detailed view of an upper support in FIG. 13, FIG. 17 is a front view of a state in which a battery module is mounted on the upper support in FIG. 13, FIG. 18 is a perspective view of a support frame on which a battery module is mounted in one embodiment of the present invention, and FIG. 19 is a perspective view of a support frame on which a battery module is mounted, viewed from another angle, in one embodiment of the present invention.

[0050] An energy storage device (1000) according to one embodiment of the present invention may include a case (100), a plurality of battery modules (200), and a support frame (300) for supporting the battery modules (200).

[0051] The above case (100) forms an outer case of an energy storage device (1000), can accommodate a plurality of battery modules (200) and a support frame (300), and can include a main body (110) and a door (120).

[0052] In the case (100), the main body (110) may include a bottom portion (111), a front portion (112), a rear portion (114), a side portion (113), and an upper portion (115).

[0053] The bottom part (111) of the main body (110) can be formed in the form of a plate extending horizontally. On the outer lower surface of the bottom part (111), four support legs (111a) for supporting the case (100) can be respectively arranged at the corners of the bottom part (111).

[0054] In the main body (110), the front part (112) and the rear part (114) can form the front and rear of the case (100), respectively, and can be arranged at the front and rear edges of the bottom part (111) and the upper surface part (115), respectively.

[0055] In the main body (110), the side portion (113) forms one side of the case (100) and can be placed on the left or right edge of the bottom portion (111) and the upper surface portion (115), respectively.

[0056] The front part (112), the rear part (114), and the side part (113) can form the side of the case (100) together with the door (120).

[0057] In the main body (110), the upper surface (115) may be placed on the upper part of the case (100) and may cover the inside of the case (100). An electrical device such as a PCS (Power Conversion System) may be installed on the outer upper surface of the upper surface (115), and may have a structure for installing the electrical device.

[0058] The door (120) is coupled to one side of the main body (110) and can open and close the interior of the case (100). The door (120) can be positioned on the opposite side of the side portion (113) of the case (100) to face the side portion (113) and form one side of the case (100).

[0059] The door (120) can be rotatably connected to the main body (110) by a hinge, and can also be connected to the main body (110) so as to be completely detachable from the main body (110).

[0060] In one embodiment of the present invention, a locking device for the door (120) may be provided.

[0061] A door locking device according to one embodiment of the present invention may include a bracket (130) arranged on the door (120) and a load bar assembly (140) of the case body (110).

[0062] As described above, the door (120) can be coupled to one side of the main body (110) so as to face the side portion (113) from the opposite side of the side portion (113), and the area of ​​the door (120) can be the same as or similar to the side portion (113).

[0063] As shown in FIG. 3, the door (120) may include a door panel (121), a gasket (122), a stiffness bar (123), and a bracket (130).

[0064] The door panel (121) may be positioned to face the side portion (113), and the area of ​​the door panel (121) may be the same as or similar to the side portion (113). Accordingly, one side of the case (100) may be opened or closed by the door (120). In the present embodiment, the door panel (121) may have a roughly rectangular shape.

[0065] The gasket (122) can be placed on the inner side of the door panel (121) (the side facing the main body (110) of the case (100)) and spaced inward from the edge of the door panel (121), and can be formed in an approximately rectangular shape in the present embodiment. The gasket (122) can be placed on a rectangular border (110c) protruding from one side (110a) of the main body (110) when the door (120) is locked, thereby sealing the case (100).

[0066] The reinforcing bar (123) may be arranged on the inner surface of the door panel (121) where the gasket (122) is arranged and may reinforce the rigidity of the door panel (121). In the present embodiment, the reinforcing bar (123) may be arranged in a square shape on the inner surface of the gasket (122) and may include four linear bars. The four linear bars constituting the reinforcing bar (123) may each be arranged on one side of the square. The reinforcing bar (123) may be made of a metal material. In the door locked state, the reinforcing bar (123) may be arranged on the inner surface of the rectangular border (110c) protruding from one side (110a) of the main body (110).

[0067] The bracket (130) can be placed on one edge of the inner surface of the door panel (121) where the gasket (122) is placed.

[0068] The bracket (130) may include a connecting portion (133) connected to the door panel (121), a locking plate (132), and a slanting plate (131).

[0069] The locking plate (132) of the bracket (130) can be bent and arranged at one end of the connecting portion (133), and when the door (120) is locked, the end (roller (142a)) of the locking bracket (142) of the load bar assembly (140) can be arranged on the locking plate (132) to maintain the locked state. In the present embodiment, the locking plate (132) can be formed in a flat shape and can be arranged parallel to the door panel (121).

[0070] The inclined plate (131) can be extended by being bent at a predetermined angle from one end of the locking plate (132) toward the inside of the case (100) or toward the main body (110). The bending angle of the inclined plate (131) can be 90 degrees or less, 10 to 60 degrees, or 20 to 50 degrees.

[0071] As described later, when the door (120) is locked, the load bar assembly (140) moves downward, and the roller (142a) placed at the end of the lock bracket (142) moves along the inclined plate (131) and can then be placed on the lock plate (132).

[0072] The brackets (130) can be positioned on the upper and lower sides of one side of the gasket (122) as shown in FIG. 3, and can form a locking device of the door together with the load bar assembly (140).

[0073] A hinge part (121a) may be placed on the opposite edge of one edge of the door panel (121) where the bracket (130) is placed.

[0074] The hinge portion (121a) is for allowing the door (120) to be rotatably connected to the main body (110). A through hole extending vertically may be formed in the center of the hinge portion (121a), and a hinge pin (not shown) may be inserted into the through hole so that the door (120) may be rotatably connected to the main body (110). A hinge ring portion (110b) may be arranged on one edge of the case body (110) as a component into which the hinge pin is inserted together with the hinge portion (121a), and the door may be rotatably connected by inserting the hinge pin into the hinge portion (121a) and the hinge ring portion (110b). A plurality of hinge portions (121a) may be arranged on one edge of the door panel (121), and three hinge portions (121a) are illustrated in FIG. 3.

[0075] The load bar assembly (140) can be placed on one edge of one side (140a) of the main body (140) to which the door (120) is coupled, and can be placed on the outside of a square-shaped frame (110c) protruding from one side (140a) of the main body (140).

[0076] The load bar assembly (140) may include a load bar (141), a locking bracket (142), and a fixing member (143).

[0077] The load bar (141) can be arranged on one edge of one side (140a) of the main body (140) to which the door (120) is coupled, and can be arranged to be slidably moved on the edge of the one side (140a) where the bracket (130) is positioned when the door (120) is closed. The load bar (141) can be extended in a vertical direction (Z-axis direction) along the edge of the one side (140a) as illustrated in FIG. 6, and can include a pair of wing plates (141a) and a connecting plate (141b) that are opposed to each other and arranged vertically.

[0078] A pair of wing plates (141a) are arranged so as to face each other and are spaced apart from each other on one edge of one side (140a) of the main body (140) and can be arranged in the vertical direction.

[0079] A connecting plate (141b) can connect a pair of wing plates (141a), and can be bent from both side ends of the connecting plate (141b) toward one side (140a) of the main body (140) so that a pair of wing plates (141a) can be integrally formed with the connecting plate (141b).

[0080] The connecting plate (141b) can be spaced apart from one side (140a) of the main body (140) and arranged parallel to one side (140a) of the main body (140) or the door (120).

[0081] Such a load bar (141) can be arranged so as to be movable up and down on one side (140a) of the main body (140). As illustrated in FIG. 6, an insertion hole (141c) can be formed in one wing plate (141a) on one side of the load bar (141), and a tool can be inserted into the insertion hole (141c) and the load bar (141) can be moved up and down using the tool.

[0082] A hole (141d) extending vertically (Z-axis direction) may be formed in the connecting plate (141b) of the load bar (141), and a protrusion (144) disposed on one surface (140a) of the main body (140) may be inserted into the hole (141d). In the present embodiment, as illustrated, the upper end of the protrusion (144) may be inserted into the hole (141d). Accordingly, the protrusion (144) may be inserted into the hole (141d) to guide the vertical movement of the load bar (141). In addition, the load bar (141) may move downward until the protrusion (144) contacts the upper end of the hole (141d), and may move upward until the protrusion (144) contacts the lower end of the hole (141d).

[0083] The holes (141d) and protrusions (144) can be arranged in multiples, and as shown in FIG. 5, holes (141d) can be formed at the upper and lower portions of the load bar (141), respectively, and protrusions (144) inserted into the holes (141d) can be arranged at the upper and lower sides of one surface (140a) of the main body (140).

[0084] The locking bracket (142) is arranged on the load bar (141) and can lock and release the bracket (130) of the door (120) as it moves together with the load bar (141). The locking bracket (142) can be arranged on the connecting plate (141b) of the load bar (141), one end of the locking bracket (142) can be coupled to the connecting plate (141b) of the load bar (141), and the other end of the locking bracket (142) can be spaced apart from the connecting plate (141b) and extend downward toward the door (120).

[0085] A rotatably coupled roller (142a) may be arranged at the other end of the lock bracket (142). The rotation axis of the roller (142a) may be arranged in a horizontal direction (Y-axis direction).

[0086] Accordingly, when the load bar assembly (140) or the load bar (141) moves downward, the roller (142a) can move along the inclined plate (131) of the bracket (130) and then be placed on the locking plate (132). At this time, the roller (142a) can press the locking plate (132) of the bracket (130) toward the main body, and the gasket (122) of the door (120) can be firmly coupled by being in close contact with the edge (110c) of the main body (110). As a result, the sealing property of the door (120) in the locked state is improved, and the locked state can be firmly maintained. In addition, since the roller (142a) moves while rotating on the inclined plate (131) and the locking plate (132), the friction with the bracket (130) is reduced, so that the door (120) can be switched from the unlocked state (or locked state) to the locked state (or unlocked state) with less force.

[0087] The locking brackets (142) can be respectively positioned on the upper and lower sides of the connecting plate (141b) of the load bar (141), and each locking bracket (142) can restrain the bracket (130) of the door (120) to maintain the locked state of the door (120).

[0088] In the load bar assembly (140), the fixing member (143) can maintain the position of the load bar assembly (140) in a released state. In the present embodiment, the fixing member (143) is placed on the load bar (141) and can move together with the vertical movement of the load bar (141).

[0089] The fixed member (143) may be formed in the shape of a band extending vertically in the present embodiment, and as shown, a curved portion (143a) that is convexly curved in the direction of the protrusion (144) may be formed in some sections. The fixed member (143) and the protrusion (144) may be respectively arranged on the upper and lower sides of the load bar (141).

[0090] Fig. 7 is a drawing illustrating a locked state of a door lock. In the locked state of the door (120), the roller (142a) of the lock bracket (142) can be arranged to contact the lock plate (132), and the roller (142a) can press the lock plate (132). In the locked state, when a tool is inserted into the insertion hole (141d) of the load bar (141) and the user moves the load bar (141) upward, the roller (142a) can rotate and move from the lock plate (132) to the slant plate (133), and the roller (142a) can descend along the slant plate (133). When the roller (142a) is completely separated from the slant plate (133), the door (120) is in the unlocked state. Fig. 8 is a drawing illustrating a unlocked state of the door lock. As shown in Fig. 8, the door (120) can be opened in the unlocked state.

[0091] And, when explaining the movement of the fixed member (143) when the load bar (141) moves, the fixed member (143) is in a locked state, so that the curved portion (143a) of the fixed member (143) is positioned below the protrusion (144) as shown in Fig. 7. In this state, when the load bar (141) moves upward, the fixed member (143) has its own elasticity and is deformed, so that the curved portion (143a) passes over the protrusion (144) and is positioned above the protrusion (144).

[0092] Fig. 9 is a drawing showing a door unlocked state. When the curved part (143a) passes over the protrusion (144) and is positioned above the protrusion (144), the door can be unlocked. When an external force is removed while the curved part (143a) is positioned above the protrusion (144), the curved part (143a) is secured to the protrusion (144), and the position of the load bar (141) is fixed.

[0093] In this way, in this embodiment, the position of the load bar (141) is fixed in the door unlocked state, so that the door (120) and the load bar (141) do not interfere with each other and the door (120) can be maintained in the unlocked state.

[0094] In order to switch from this unlocked state to the locked state again, the user can insert a tool into the insertion hole (141d) of the load bar (141) while the door (120) is closed and move the load bar (141) downward. When the load bar (141) moves downward, the curved portion (143a) passes over the protrusion (144) and is positioned below the protrusion (144).

[0095] And, the roller (142a) of the lock bracket (142) can move along the inclined plate (131) of the bracket (130) and then be placed on the lock plate (132) to be in a locked state.

[0096] Meanwhile, as shown in Fig. 6, a coupling block (145) may be coupled to the load bar (141). The coupling block (145) may protrude further toward the main body (110) than the wing plate (141a), and thus the wing plate (141a) may be spaced apart from one side (110a) of the main body (110). By spaced apart from the one side (110a) of the main body (110), friction during the vertical movement of the load bar (141) may be reduced, the load bar (141) may be moved with less force, durability may be improved, and scratches may be prevented.

[0097] In the case (100), the areas of the side portion (113) and the door (120) may be the same or similar to each other, and the areas of the side portion (113) and the door (120) may be larger than the area of ​​the bottom portion (111). For example, the areas of the side portion (113) and the door (120) may be more than twice that of the bottom portion (111), and therefore, as illustrated, one side with a large area in the case (100) of the energy storage device (1000) may be arranged in a form in which it stands up by forming the side of the case (100) rather than forming the bottom, thereby reducing the installation area.

[0098] The battery module (200) may include a module case (210) as shown in FIGS. 10 and 11, and a plurality of cell module assemblies (CMAs (Cell Module Assemblies)) (not shown) accommodated within the module case (210).

[0099] A cell module assembly (CMA) accommodated in a module case (210) comprises a plurality of battery cells, and in each cell module assembly, a plurality of battery cells can be arranged in close contact.

[0100] Each battery cell may be, for example, a pouch-type battery cell (250). The pouch-type battery cell (250) may have a structure in which an electrode assembly is accommodated within a pouch-type case.

[0101] For example, a cell module assembly may include a plurality of battery cells that are mutually stacked or closely packed, and each battery cell may be provided with electrode leads (251, 252) at the front and / or rear ends, and a positive electrode lead may be provided at the front end and a negative electrode lead may be provided at the rear end. In the cell module assembly, a plurality of battery cells (250) may be arranged so as to be electrically connected to each other.

[0102] In the cell module assembly of the present embodiment, battery cells can be stacked vertically, and a plurality of cell module assemblies can be arranged vertically within a module case (210).

[0103] Figure 12 is a drawing illustrating a pouch-type battery cell (250).

[0104] A battery cell (250) provided in a pouch type may include an electrode assembly and a cell case (255) that accommodates the electrode assembly.

[0105] The cell case (255) of the battery cell (250) may be a pouch-type cell case (255) for accommodating the electrode assembly. The cell case (255) includes a lower case and an upper case covering the lower case, and the upper and lower cases may be formed as a single body. In addition, as illustrated in FIG. 12, the connecting portions of the upper and lower cases may be formed in a structure in which they are bent and folded. In addition, as illustrated, the upper case may completely cover the lower case, and a sealing portion (254) may be formed at the periphery.

[0106] Both the upper and lower cases can be formed of a laminate structure including an inner covering layer, a metal layer, and an outer covering layer. The inner covering layer is located on the inside of the cell case (255) based on the metal layer and is in direct contact with the electrode assembly, so it must have insulation and electrolytic resistance. In addition, in order to seal it from the outside, the sealing portion where the inner layers are thermally bonded must have excellent thermal bonding strength. The metal layer is located between the inner covering layer and the outer covering layer and serves as a barrier layer that prevents moisture or various gases from penetrating into the battery from the outside. A preferable material for the metal layer in contact with the inner covering layer is an aluminum (Al) thin film that is lightweight and has excellent formability. The outer covering layer is located on the outside of the cell case (255) based on the metal layer, and this outer covering layer can use a heat-resistant polymer with excellent tensile strength, moisture permeability, and air permeability to protect the electrode assembly while ensuring heat resistance and chemical resistance. For example, nylon or polyethylene terephthalate can be used.

[0107] A receiving groove (256) may be formed in each of the upper and lower cases, and an electrode assembly may be accommodated in the receiving groove (256) of the upper and lower cases. In the cell case (255) of the pouch-type battery cell (250), the part shown in FIG. 12 is the upper case, and the lower case is arranged below it. In the present embodiment, the lower case of the cell case (255) may be arranged to face the bottom portion (3211) of the module case (210), and the lower case and its receiving groove (256) may be arranged parallel to the bottom portion (211).

[0108] The electrode assembly housed in the cell case (255) may be one of a group consisting of a jelly-roll type electrode assembly having a structure in which a separator is interposed between long sheet-shaped positive and negative electrodes and then rolled up, a stack type electrode assembly having unit cells having a structure in which rectangular positive and negative electrodes are stacked with a separator interposed between them, a stack-folding type electrode assembly in which the unit cells are rolled up by a long separator film, and a lamination-stack type electrode assembly in which the unit cells are stacked with a separator interposed between them and attached to each other.

[0109] Additionally, the electrode assembly may include two electrode tabs (250a, 250b) and two electrode leads (251, 252) connected to the two electrode tabs (250a, 250b) by welding, respectively.

[0110] One of the two electrode tabs (250a, 250b) may be a positive tab and the other may be a negative tab.

[0111] Among the two electrode leads (251, 252), one electrode lead (251, 252) may be a positive lead connected to the positive tab, and the other electrode lead (251, 252) may be a negative lead connected to the negative tab. For example, the positive electrode lead (251, 252) may be made of aluminum (Al), and the negative electrode lead (251, 252) may be made of copper (Cu).

[0112] A lead film (253) may be attached to each of the electrode leads (251, 252). The lead film (253) attached to the electrode leads (251, 252) is positioned between the electrode leads (251, 252) and the cell case (255) to prevent a short circuit from occurring between the electrode leads (251, 252) and the cell case (255) and to improve sealing strength, thereby preventing leakage of the electrolyte, etc.

[0113] The two electrode leads (251, 252) are shown as being arranged on each side of the electrode assembly, but may be arranged on only one side of the electrode assembly depending on the arrangement of the electrode tabs.

[0114] In the cell module assembly, the battery cells are not limited to pouch-shaped battery cells, but may be composed of other shapes such as square or cylindrical battery cells.

[0115] The cell module assembly may be placed within the module case (210) of the battery module (200) in an open form without an independent housing. In addition, as another example, the cell module assembly may be in a form in which a plurality of battery cells are housed within a housing, and the cell module assembly may be housed within individual housings and placed independently within the module case (210).

[0116] As another example, the battery module (200) may have multiple battery cells stacked and arranged within a module case (210).

[0117] The module case (210) may include a bottom portion (211), a front portion (212), a rear portion (214), two side portions (213, 216), and a top portion (215).

[0118] The bottom part (211) of the module case (210) can form the bottom of the module case (210) in the form of a plate extending horizontally.

[0119] The front part (212) and the rear part (214) can form the front and rear parts of the module case (210), respectively, and can be arranged at the front and rear edges of the bottom part (211) and the upper surface part (215), respectively.

[0120] The two side portions (213, 216) form both sides of the module case (210) and can be placed on the left and right edges of the bottom portion (211) and the top portion (215), respectively.

[0121] The front portion (212), the rear portion (214), and both side portions (213, 216) can form the side surfaces of the module case (210).

[0122] The upper surface (215) can be placed on the upper part of the module case (210) and cover the inside of the module case (210).

[0123] In the module case (210), the area of ​​the side portions (213, 216) may be larger than the area of ​​the bottom portion (211). For example, the area of ​​the side portions (213, 216) may be more than twice that of the bottom portion (211), and therefore, as illustrated, one side of the module case (210) with a large area may not form the bottom, but may be arranged to form a side of the module case (210) and stand up, thereby reducing the installation area within the energy storage device (1000).

[0124] These multiple battery modules (200) can be placed on a support frame (300) within a case (100).

[0125] FIG. 13 is a drawing illustrating a support frame (300) that supports a battery module (200) in an energy storage device (1000) according to one embodiment of the present invention.

[0126] The above support frame (300) can support a plurality of battery modules (200). In the present embodiment, the support frame (300) can include a plurality of vertical support members (310), a lower support member (320), an upper support member (330), a top fixing member (340), and a module fixing member (350).

[0127] In this embodiment, four vertical support members (310) can be arranged, two vertical support members (310) can be arranged in front of the battery module (200), and two vertical support members (310) can be arranged in the rear of the battery module (200).

[0128] The vertical support member (310) may include a pair of wing plates (311) and a connecting plate (312).

[0129] A connecting plate (312) disposed between a pair of wing plates (311) can connect the pair of wing plates (311). The pair of wing plates (311) and the connecting plate (312) can be formed integrally, and the pair of wing plates (311) in the vertical support member (310) can be bent outwardly (in the opposite direction of the battery module (200)) at a certain angle (for example, a right angle) from both ends of the connecting plate (312) and can be disposed parallel to each other.

[0130] Each wing plate (311) may have a plurality of apertures (313) spaced apart from each other along the length.

[0131] The vertical support member (310) can have its structural rigidity reinforced by having a pair of wing plates (311) bent on both sides of the connecting plate (312).

[0132] The lower support member (320) is arranged on the lower side of the support frame (300) and can support a plurality of battery modules (200).

[0133] In this embodiment, two battery modules (200) are shown to be supported by the lower support member (320), but two or more battery modules (200) may be placed on the lower support member (320).

[0134] The lower support (320) may include a support plate (321) and two horizontal members (322) (see FIG. 15).

[0135] The support plate (321) may be formed as a plate having an approximately rectangular shape, and the battery module (200) may be supported on the support plate (321). The support plate (321) may be integrally formed with a folded plate (321b) that is folded upward along an edge in the width direction (X-axis direction) of the support plate (321), and may be fixed by being joined to two vertical support members (310) arranged at the rear of the battery module (200) through a joining hole (321c) formed in the folded plate (321b) using a bolt or the like. The support plate (321) may be joined to the vertical support members (310) by a bolt, a rivet, welding, or the like. The material of the support plate (321) may be, for example, metal.

[0136] A sheet (323) can be placed on the support plate (321).

[0137] The sheet (323) can be bonded to or attached with an adhesive on the support plate (321), and can be, for example, a resin sheet, a polycarbonate sheet, etc. As the sheet (323), the polycarbonate sheet has excellent electrical insulation, durability, weather resistance, impact resistance, etc., and can stably support a heavy battery module (200).

[0138] In this embodiment, a sheet (323) is placed on a support plate (321), so that when a heavy battery module (200) is placed on the support plate (321), friction is reduced, making it easier to install the battery module (200) and preventing scratches between contacting parts.

[0139] The area of ​​the sheet (323) may be equal to or smaller than the area of ​​the support plate (321), and may be larger than the sum of the areas of the bottoms (211) of the two battery modules (200).

[0140] It may include two side portions (321a) that are bent downward at both ends of the support plate (321) along the longitudinal direction (Y-axis direction). The length of the side portions (321a) along the longitudinal direction (Y-axis direction) may be the same as that of the support plate (321).

[0141] Two horizontal members (322) can be formed by bending (for example, bending at a right angle) toward the support plate (321) at the end of the side portion (321a). The horizontal members (322) can be parallel to the support plate (321).

[0142] The horizontal member (322) may be formed integrally with the support plate (321), and one end of each horizontal member (322) may be joined to the lower portion of the vertical support member (310) positioned at the front of the battery module (200). The horizontal member (322) may be joined to the vertical support member (310) using bolts, rivets, welding, or the like.

[0143] In addition, the horizontal member (322) may be formed in a plate shape and may extend and protrude further than the support plate (321) in the longitudinal direction (Y-axis direction). Accordingly, the length of the horizontal member (322) in the longitudinal direction (Y-axis direction) may be longer than that of the support plate (321). Accordingly, a space (S) may be formed between the front portion of the battery module (200) disposed on the support plate (321) and the vertical support member (310) coupled to the horizontal member (322). In the present embodiment, by securing the space (S) inside the vertical support member (310) in this way, the insertion and assembly of the battery module (200) is facilitated, and electrical work is facilitated along with the installation of electrical devices and wiring (see FIG. 11).

[0144] In the lower support member (320), the support plate (321), the side member (321a), and the horizontal member (322) can be formed integrally.

[0145] The lower support member (320) is bent at both ends of the support plate (321) to place the side member (321a), and the horizontal member (322) is bent at the side member (321a) to place the horizontal member, thereby reinforcing the rigidity and stably supporting the heavy battery module (200).

[0146] The upper support member (330) may be positioned above the lower support member (320) in the support frame (300) to support a plurality of battery modules (200). In the present embodiment, the upper support member (330) may be positioned between the lower support member (320) and the top fixing member (340), and may be coupled to the vertical support member (310) at approximately the center.

[0147] The configuration of the upper support (330) is similar to that of the lower support (320). Although the drawing shows two battery modules (200) being supported on the upper support (330), two or more battery modules (200) may be placed on the upper support (330).

[0148] The upper support member (330) may include a support plate (331) and two horizontal members (332) (see FIG. 16).

[0149] In the upper support member (330), the support plate (331) may be formed as a plate having an approximately square shape. A folded plate (331b) folded upward along the edge of the width direction (X-axis direction) of the support plate (331) may be integrally formed on the support plate (331), and may be fixed by being joined to two vertical support members (310) arranged at the rear of the battery module (200) using bolts or the like through a joining hole (331c) formed in the folded plate (331b). The support plate (331) may be made of, for example, a metal material, and may be joined to the vertical support members (310) by means of bolts, rivets, welding, or the like.

[0150] A sheet (333) may be placed on the support plate (331). The sheet (333) may be bonded to the support plate (321) or attached with an adhesive, and may be, for example, a resin sheet, a polycarbonate sheet, or the like.

[0151] Similarly to the lower support (320), a sheet (333) is placed on the support plate (331) on the upper support (330), so that friction is reduced when placing a heavy battery module (200) on the support plate (331), thereby facilitating installation of the battery module (200).

[0152] The area of ​​the sheet (333) may be equal to or smaller than the area of ​​the support plate (331), and may be larger than the sum of the areas of the bottoms (211) of the two battery modules (200).

[0153] A side portion (331a) may be arranged by bending downwards at both ends of the support plate (331) along the longitudinal direction (Y-axis direction). The length of the side portion (331a) along the longitudinal direction (Y-axis direction) may be the same as that of the support plate (331).

[0154] Two horizontal members (332) can be formed by bending (for example, bending at a right angle) from the end of the side portion (331a) toward the support plate (321). The horizontal members (332) can be parallel to the support plate (331).

[0155] In the upper support member (330), the horizontal member (332) can be formed integrally with the support plate (331), and one end of each horizontal member (332) can be connected to the central portion of the vertical support member (310) arranged in front of the battery module (200) using a bolt, rivet, welding, or the like.

[0156] In addition, the horizontal member (332) may be formed in a plate shape and may extend and protrude further than the support plate (331) in the longitudinal direction (Y-axis direction). Accordingly, the length of the horizontal member (332) in the longitudinal direction (Y-axis direction) may be longer than that of the support plate (331). Accordingly, a space (S) may be formed between the front portion of the battery module (200) disposed on the support plate (331) and the vertical support member (310) coupled to the horizontal member (332), and by securing the space (S) inside the vertical support member (310), insertion and assembly of the battery module (200) are facilitated, and electrical work is facilitated.

[0157] In the upper support member (330), the support plate (331), the side member (331a), and the horizontal member (332) can also be formed integrally.

[0158] The upper support member (330) is bent at both ends of the support plate (331) to place the side member (331a), and the horizontal member (332) is bent at the side member (331a) to place the horizontal member, thereby reinforcing the rigidity and stably supporting the heavy battery module (200).

[0159] The above top fixing member (340) can be placed on the upper part of the support frame (300) and can serve to fix and support the upper part of the support frame (300).

[0160] The top fixing member (340) may include two fixing members (341) and two connecting members (342).

[0161] In the top fixing member (340), one end of the fixing member (341) may be coupled to the vertical support member (310) at the front of the battery module (200), and the other end of the fixing member (341) may be coupled to the vertical support member (310) at the rear of the battery module (200). The two fixing members (341) may be arranged parallel to each other. The fixing member (341) may be coupled to the vertical support member (310) by means of a bolt, a rivet, welding, or the like.

[0162] A connecting member (342) may have one end connected to one fixed member (341) and the other end connected to another fixed member (341) so as to connect two fixed members (341) to each other. The two connecting members (342) may be spaced apart from each other along the longitudinal direction (Y-axis direction) of the fixed member (341) and may be arranged parallel to each other.

[0163] In this way, the two fixing members (341) can connect the two vertical support members (310) arranged at the front and rear of the battery module (200), respectively, and the two connecting members (342) can connect the two fixing members (341) to each other, so that the top fixing member (340) can fix and support the upper end of the support frame (300).

[0164] In this embodiment, the module fixing member (350) is coupled to the vertical support member (310) to fix two battery modules (200) and prevent movement and vibration.

[0165] As shown, upper and lower module fixing members (350) can be placed on two vertical support members (310) at the rear of the battery module (200), and the lower module fixing member (350) can fix two battery modules (200) placed on the lower support member (320), and the upper module fixing member (350) can fix two battery modules (200) placed on the upper support member (330).

[0166] The module fixing member (350) may include a joining plate (351) that is joined and fixed to two vertical support members (310), and the rear of the two battery modules (200) may be supported by the joining plate (351).

[0167] In this embodiment, the support frame (300) has the configuration described above, thereby stably securing the rigidity of the structure. In addition, the energy storage device (1000) according to this embodiment has a reduced installation area and a thinner thickness (distance in the X-axis direction).

[0168] Although the present invention has been described with reference to preferred embodiments as described above, it is not limited to the above embodiments, and various changes and modifications may be made by a person having ordinary skill in the art to which the invention pertains within a scope that does not depart from the spirit of the present invention.

[0169]

[0170] The present invention provides a door locking device for reliably locking and unlocking a door in an energy storage device.

Claims

1. In the locking device of the door coupled to the case body of the energy storage device, a bracket placed on the above door; and A load bar assembly movably positioned on the case body; Including, The above load bar assembly A load bar slidably positioned on the case body; and A locking bracket arranged on the load bar and moving together with the load bar to restrain and release the bracket of the door; A door lock of an energy storage device including:

2. In paragraph 1, The above bracket includes a locking plate, A door lock device of an energy storage device in which an end of the lock bracket is placed on the lock plate when the door is locked.

3. In paragraph 2, The above locking bracket is a door lock of an energy storage device including a roller.

4. In paragraph 3, A door lock device of an energy storage device, wherein the bracket further includes an inclined plate at one end of the lock plate.

5. In paragraph 4, A door lock device of an energy storage device in which the roller of the lock bracket moves along the inclined plate when the door is switched from an unlocked state to a locked state and is positioned on the lock plate.

6. In paragraph 4, The above-mentioned inclined plate is a door lock device of an energy storage device bent toward the body of the case from one end of the above-mentioned locking plate.

7. In paragraph 4, The above locking plate is a door locking device of an energy storage device arranged parallel to the door.

8. In paragraph 1, A door lock device of an energy storage device further comprising a protrusion arranged on one side of the main body of the case.

9. In paragraph 8, A door lock device of an energy storage device in which the load bar assembly further includes a fixing member that is arranged on the load bar and is movable together with the load bar, and in which the position of the fixing member is fixed by the protrusion when the door is in an unlocked state.

10. In paragraph 9, The above-mentioned fixed member is a door lock device of an energy storage device including a convex curved portion.

11. In paragraph 10, The above fixed member is formed in a belt shape, A door lock device of an energy storage device in which a convex curved portion is formed in a portion of the above-mentioned fixed member.

12. In paragraph 10, The above-mentioned curved part is a door lock device of an energy storage device that is convexly curved in the direction of the protrusion.

13. In paragraph 12, A door lock device of an energy storage device in which the bent portion of the above-mentioned fixed member is secured to the protrusion when the door is in an unlocked state.

14. In paragraph 8, The above load bar is a door lock of an energy storage device including a hole extending along the direction of movement thereof.

15. In paragraph 14, The above protrusion is a door lock device of an energy storage device inserted into the above hole.

16. In paragraph 1, The above load bar assembly further includes a coupling block that contacts one surface of the case body, A door lock device of an energy storage device in which the load bar is separated from one side of the case body by the above-mentioned combination block.

17. In the locking device of the door coupled to the case body of the energy storage device, a bracket placed on the above door; and A locking bracket movably positioned on the case body; A door lock device of an energy storage device that binds and releases the bracket of the door according to the movement direction of the lock bracket.

18. In paragraph 17, The above locking bracket is a door lock of an energy storage device including a roller.

19. In paragraph 17, A protrusion arranged on one side of the main body of the above case; and A door lock device of an energy storage device further comprising a movable fixing member together with the locking bracket, wherein the position of the fixing member is fixed by the protrusion when the door is in an unlocked state.

20. In paragraph 19, The above-mentioned fixed member is a door lock device of an energy storage device including a convex curved portion.

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