Charging or unloading device

Abstract

A loading or unloading device, comprising: a variety of external connections, including a first external connection and a second external connection for charging or discharging a battery cell; a first terminal block that is electrically connected to the first external terminal; a busbar that is electrically connected to the second external connection; a second terminal block, spaced from the first terminal block in a first horizontal direction and electrically connected to the second external terminal; and a third terminal block, which is spaced from the first terminal block in a second horizontal direction perpendicular to the first horizontal direction and is electrically connected to the second external terminal block via the busbar.

Description

BACKGROUND OF THE INVENTION 1. Field

[0001] The present disclosure relates to a battery and, more particularly, to a charging or discharging device. 2. Description of the state of the art

[0002] Batteries undergo a formation process during manufacturing. The formation process involves repeated charging or discharging of batteries to impart electrical properties to the batteries. The formation process is performed by a charger or discharger. Battery cells can be manufactured in a wide variety of specifications. SUMMARY OF THE INVENTION

[0003] An object of the present disclosure is to provide a charging or discharging device that is compatible with battery cells of various specifications.

[0004] This disclosure can be applied in the field of green technologies, such as solar power generation and wind power generation. Furthermore, this disclosure can be applied directly or indirectly in environmentally friendly devices such as electric and hybrid vehicles to prevent air pollution and climate change by suppressing greenhouse gas emissions.

[0005] A charging or discharging device according to an embodiment of the present disclosure includes: a plurality of external terminals including a first external terminal and a second external terminal for charging or discharging a battery cell; a first terminal electrically connected to the first external terminal; a bus bar electrically connected to the second external terminal; a second terminal spaced from the first terminal in a first horizontal direction and electrically connected to the second external terminal; and a third terminal spaced from the first terminal in a second horizontal direction perpendicular to the first horizontal direction and electrically connected to the second external terminal via the bus bar.

[0006] In one embodiment, the first terminal may be electrically connected to a first electrode tab of the battery cell, and one of the second terminal or the third terminal may be electrically connected to a second electrode tab of the battery cell.

[0007] In one embodiment, the second terminal can be electrically connected to the second electrode tongue when the first electrode tongue and the second electrode tongue extend in the same direction.

[0008] In one embodiment, the third terminal may be electrically connected to the second electrode tab when the first electrode tab and the second electrode tab protrude in opposite directions.

[0009] In one embodiment, the loading or unloading device may further include a rail disposed below the third terminal, and the third terminal may be moved along the second horizontal direction by the rail.

[0010] In one embodiment, the distance between the third terminal and the first terminal may be longer than the length of a main body of the battery cell.

[0011] In one embodiment, the charging or discharging device may further include a base plate disposed below the plurality of external terminals, the first terminal, the second terminal, and the third terminal, and at least a portion of the bus bar may be disposed below the base plate.

[0012] In one embodiment, the base plate may have an opening formed to expose at least a portion of an upper section of the busbar, and the opening may be located in a region between the third terminal and the first terminal.

[0013] In one embodiment, the charging or discharging device may further include a bus bar cover disposed between the first terminal and the third terminal and to which the main body of the battery cell is attached.

[0014] In one embodiment, the busbar cover may include: a cover member whose length is adjusted when the third terminal moves along the second horizontal direction; and a receiving portion in which at least a part of the cover member is accommodated.

[0015] In one embodiment, the receiving portion may include: a rotating shaft that winds or unwinds the cover member; a latch coupled to the rotating shaft; a lever that prevents rotation of the latch in a direction in which the cover member is wound either clockwise or counterclockwise; and a switch that disconnects the lever from the latch so that the cover member is wound.

[0016] In one embodiment, the receiving portion may include: a spring member coupled to one end of the cover member and winding the cover member by a restoring force when the cover member is unwound; a lever in contact with the cover member and preventing the winding of the cover member; and a switch that separates the lever from the cover member so that the cover member is wound by the spring member.

[0017] In one embodiment, at least one of the first terminal or the second terminal may include: a pressing portion disposed at an upper portion of a corresponding electrode tab among a first electrode tab and a second electrode tab of the battery cell that protrude in the same direction; a connecting portion disposed at a lower portion of the corresponding electrode tab and electrically connected to a corresponding one of the first external terminal and the second external terminal; and an adjusting portion that adjusts the height of the pressing portion so that the pressing portion presses the upper portion of the corresponding electrode tab so that the corresponding electrode tab is electrically connected to the connecting portion.

[0018] In one embodiment, the third connection terminal may include: a pressing portion disposed at an upper portion of a second electrode tab among a first electrode tab and a second electrode tab of the battery cell, which protrude in opposite directions; a connecting portion disposed at a lower portion of the second electrode tab; and an adjusting portion that adjusts the height of the pressing portion such that the pressing portion presses the upper portion of the second electrode tab to electrically connect the second electrode tab to the bus bar through the connecting portion.

[0019] In one embodiment, the third terminal may further include an elastic member connected between the pressing portion and the connecting portion.

[0020] In one embodiment, the connecting portion may be either in a state of being spaced apart from the bus bar or in a state of being in contact with the bus bar, depending on the adjustment by the adjustment portion.

[0021] An embodiment of the present disclosure may provide a charging or discharging device compatible with battery cells of various specifications.

[0022] An embodiment of the present disclosure may provide a charging or discharging device capable of protecting a busbar. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 shows a block diagram for explaining a charging or discharging device according to an embodiment. Fig. 2 is a diagram for explaining a charging or discharging device according to an embodiment. Fig. Fig. 3 is a diagram for explaining a state in which a busbar cover is removed from the charging or discharging device of Fig. 2 is separated. Fig. 4 is a diagram illustrating a cross section of a charging or discharging device according to an embodiment. Fig. 5 shows a diagram for explaining a state in which a battery cell of a first type is coupled to a charging or discharging device according to an embodiment. Fig. 6 is a diagram for explaining a state in which a third terminal has been moved according to an embodiment. Fig. 7 is a diagram illustrating a state in which a battery cell of a first type is coupled to a charging or discharging device according to an embodiment. Fig. 8 is a diagram for explaining a state in which a battery cell of a second type is connected to a charging or discharging device according to an embodiment. Fig. 9 is a diagram for explaining a terminal of a charging or discharging device according to an embodiment. Fig. 10 is a diagram for explaining a terminal of a charging or discharging device according to an embodiment. Fig. 11 is a drawing for explaining a bus bar cover of a charging or discharging device according to an embodiment. DETAILED DESCRIPTION

[0023] The structural or functional descriptions of embodiments disclosed in the present specification or application are illustrated merely for the purpose of explaining embodiments according to the technical principle of the present invention, and embodiments according to the technical principle of the present invention may be realized in various forms in addition to the embodiments disclosed in the specification or application. Furthermore, the technical principle of the present invention should not be construed as being limited to the embodiments described in the present specification or application.

[0024] Fig. 1 shows a block diagram for explaining a charging or discharging device according to an embodiment.

[0025] Referring to Fig. 1, a charging or discharging device 100 may, according to one embodiment, charge or discharge a battery cell. A charging or discharging device 100 may, for example, be a device used in a formation process for activating or evaluating the electrical properties of a battery cell during a battery cell manufacturing process.

[0026] A battery cell may be a secondary battery capable of charging or discharging electrical energy multiple times. A secondary battery may be one of the following types, for example: lithium-ion battery, lithium polymer battery, nickel-metal hydride battery, nickel-cadmium battery, sodium battery, and the like. A battery cell may include a main body and a pair of electrode tabs. A pair of electrode tabs may include a first electrode tab and a second electrode tab. A first electrode tab and a second electrode tab may be electrode tabs with different polarities. For example, a first electrode tab may be a cathode tab, and a second electrode tab may be an anode tab. Another example: a first electrode tab may be an anode tab, and the second electrode tab may be a cathode tab.

[0027] In one embodiment, a charging or discharging device 100 may include a plurality of external terminals 120a and 120b, a plurality of terminals 130a to 130c, and a bus bar 140. In one embodiment, a charging or discharging device 100 may include a charging or discharging module. A charging or discharging module may be electrically connected to a plurality of external terminals 120a and 120b. A charging or discharging module may charge or discharge a battery cell electrically connected via a plurality of external terminals 120a and 120b. For example, a charging or discharging module may provide an alternating current (or direct current) for charging or discharging a battery cell via a plurality of external terminals 120a and 120b.

[0028] A plurality of external terminals 120a and 120b may include a first external terminal 120a and a second external terminal 120b for charging or discharging a battery cell. Each of the plurality of external terminals 120a and 120b may include a conductive material. A conductive material may, for example, be a material made of copper, gold, and silver, or a combination thereof. However, this is only an example, and a conductive material may be any material that has an electrical conductivity of a certain value or higher, and may be realized using various materials.

[0029] The plurality of terminals 130a to 130c may include a first terminal 130a, a second terminal 130b, and a third terminal 130c. A first terminal 130a may be electrically connected to the first external terminal 120a. A second terminal 130b may be electrically connected to a second external terminal 120b. The third terminal 130c may be electrically connected to a busbar 140. Each of the plurality of terminals 130a to 130c may include a conductive material.

[0030] A first terminal 130a may be electrically connected to a first electrode tab of a battery cell. In this case, the first electrode tab of the battery cell may be electrically connected to a first external terminal 120a via the first terminal 130a.

[0031] A second terminal 130b or a third terminal 130c can be electrically connected to a second electrode tab of a battery cell. In other words, a second electrode tab of a battery cell can be selectively connected to a second terminal 130b or a third terminal 130c. In this case, the second electrode tab of the battery cell can be electrically connected to a second external terminal 120b via one of the second terminals 130b or the third terminal 130c.

[0032] A busbar 140 may be electrically connected to a second external terminal 120b. In other words, a third terminal 130c may be electrically connected to a second external terminal 120b via a busbar 140. For example, a second electrode tab of a battery cell may be electrically connected to a second external terminal 120b via a third terminal 130c and a busbar 140. A busbar 140 may contain a conductive material.

[0033] Fig. 2 is a diagram for explaining a charging or discharging device according to an embodiment. Fig. Fig. 3 is a diagram for explaining a state in which a busbar cover is removed from the charging or discharging device of Fig. 2 is separated. Fig. 4 shows a diagram for explaining a cross section of a loading or unloading device according to an embodiment. 100-A1, 100-B1, and 100-C1 in Fig. 4 show cross sections of the A1, B1 and C1 sections respectively of Fig. 2.

[0034] With reference to the Fig. 2 to 4, a charging or discharging device 100 according to one embodiment may include a plurality of external terminals 120a and 120b, a plurality of connection terminals 130a to 130c, and a busbar 140. In one embodiment, a charging or discharging device 100 may further include at least one base plate 110, a rail 150, and a busbar cover 160.

[0035] A base plate 110 can fix each component of a charging or discharging device 100 and supports each component. In one embodiment, a base plate 110 can contain an insulating material. The insulating material can, for example, be a material with electrically insulating properties and an electrical conductivity below a reference value.

[0036] A plurality of external terminals 120a and 120b and a plurality of connection terminals 130a to 130c may be disposed on top of a base plate 110. In other words, a base plate 110 may be exposed beneath a plurality of external terminals 120a and 120b and a plurality of connection terminals 130a to 130c. In one embodiment, at least one busbar 150 or busbar cover 160 may be disposed on top of a base plate 110.

[0037] A first external connector 120a and a second external connector 120b may be arranged on top of a base plate 110. In one embodiment, a first external connector 120a and a second external connector 120b may be spaced apart from each other in a first horizontal direction (e.g., Y-axis direction). In one embodiment, a first external connector 120a and a second external connector 120b may protrude from one end of a base plate 110 along a second horizontal direction (e.g., X-axis direction). Accordingly, each of a first external connector 120a and a second external connector 120b may be easily connected to a charging and discharging module. A second horizontal direction (e.g., X-axis direction) may be a horizontal direction perpendicular to a first horizontal direction (e.g., Y-axis direction).A horizontal direction can be a direction that is perpendicular to a height direction (e.g., Z-axis direction).

[0038] A first terminal 130a through a third terminal 130c may be disposed on top of a base plate 110. In one embodiment, a first terminal 130a may be disposed on top of a first outer terminal 120a, and a second terminal 130b may be disposed on top of a second outer terminal 120b.

[0039] In one embodiment, a third terminal 130c may be spaced from a first terminal 130a in a second horizontal direction (e.g., X-axis direction). A second horizontal direction (e.g., X-axis direction) may be a horizontal direction perpendicular to a first horizontal direction (e.g., Y-axis direction).

[0040] In one embodiment, a third terminal 130c may be electrically connected to a second electrode tab of a battery cell when a first electrode tab and the second electrode tab of the battery cell protrude in opposite directions. In this case, the first electrode tab of the battery cell may be electrically connected to a first terminal 130a.

[0041] In one embodiment, a third terminal 130c can move along a second horizontal direction (e.g., X-axis direction). In other words, the distance between a first terminal 130a and a third terminal 130c can be adjusted. Accordingly, a charging or discharging device 100 can be compatible with any battery cell of different sizes (or lengths).

[0042] In one embodiment, a second terminal 130b may be spaced from a first terminal 130a in a first horizontal direction (e.g., Y-axis direction).

[0043] In one embodiment, a second terminal 130b can be electrically connected to a second electrode tab of a battery cell if a first electrode tab and the second electrode tab of the battery cell protrude in the same direction. In this case, the first electrode tab of the battery cell can be electrically connected to a first terminal 130a.

[0044] In one embodiment, at least a portion of a bus bar 140 may be disposed beneath a base plate 110. Another portion of the bus bar 140 may be disposed within a through-hole of the base plate 110 and in contact with a second external terminal 120b. A through-hole may be formed by piercing, in a height direction (e.g., Z-axis direction), at least a portion of a region of a base plate 110 in which a second external terminal 120b is positioned.

[0045] In one embodiment, a base plate 110 may include an opening 115. Opening 115 may be formed to expose at least a portion of an upper section of a bus bar 140. In one embodiment, opening 115 may be located in an area between a third terminal 130c and a first terminal 130a.

[0046] A rail 150 refers to a track along which a third terminal 130c moves. A third terminal 130c can be moved along a second horizontal direction (e.g., X-axis direction) by a rail 150. In other words, a third terminal 130c can be moved or stopped on a rail 150. In one embodiment, a rail 150 can be arranged along a second horizontal direction (e.g., X-axis direction) from a first terminal 130a. In one embodiment, a rail can be arranged on top of a base plate 110. In one embodiment, a pair of rails 150 spaced apart from each other in a first horizontal direction (e.g., Y-axis direction) can be arranged on top of a base plate 110. An opening 115 can be arranged in a region between the pair of rails 150.

[0047] In one embodiment, a busbar cover 160 may be disposed between a first terminal 130a and a third terminal 130c. A main body of a battery cell may be mounted on a busbar cover 160. In one embodiment, a busbar cover 160 may be connected to a lateral end of a third terminal 130c. In one embodiment, a busbar cover 160 may be disposed on a rail 150.

[0048] In one embodiment, a busbar cover 160 may include a cover member 161 and a receiving portion 163.

[0049] The length of a cover element 161 can be adjusted when a third terminal 130c moves along a second horizontal direction (e.g., X-axis direction). In one embodiment, one end of a cover element 161 can be connected to a first terminal 130a. A receiving portion 163 can receive at least a portion of a cover element 161.

[0050] In one embodiment, each of a plurality of terminals 130a to 130c may include at least one of a base frame 131a to 131c, a pressing portion 132a to 132c, an adjusting portion 133a to 133c, a slot portion 134a to 134c, and a connecting portion 135a to 135c.

[0051] A base frame 131a to 131c can each fix one component of a plurality of connection terminals 130a to 130c.

[0052] A pressure section 132a to 132c may be arranged at an upper portion of an electrode tab of a battery cell. The height of a pressure section 132a to 132c may be adjusted by an adjustment section 133a to 133c.

[0053] A connecting portion 135a to 135c may be arranged at a lower part of an electrode tab. A connecting portion 135a to 135c may be electrically connected to a corresponding external terminal among a first external terminal 120a and a second external terminal 120b. Here, the connecting portion 135a to 135c may contain a conductive material.

[0054] An adjustment section 133a to 133c can adjust the height of a printing section 132a to 132c. The height can be a position in the height direction (e.g., in the Z-axis direction).

[0055] An electrode tab of a battery cell can be inserted into a slot portion 134a to 134c. A slot portion 134a to 134c may refer to a space between a pressing portion 132a to 132c and a connecting portion 135a to 135c.

[0056] Fig. 5 shows a diagram for explaining a state in which a battery cell of a first type is connected to a charging or discharging device according to an embodiment. The 100-B2 in Fig. 5 shows a cross section of B2.

[0057] As in Fig. 5, a battery cell 200 may include a main body 210 and electrode tabs 220a and 220b. Here, the type of battery cell 200 may be a first type. A first type may mean that a pair of electrode tabs 220a and 220b of a battery cell 200 protrude in opposite directions. In one embodiment, the electrode tabs 220a and 220b may include a first electrode tab 220a and a second electrode tab 220b protruding in opposite directions from a main body 210. A first electrode tab 220a and a second electrode tab 220b may be electrode tabs with different polarities. A main body 210 may include a cathode, an anode, a separator, and a housing accommodating them. In one embodiment, a main body 210 may further include an electrolyte.

[0058] A charging or discharging device 100 may include a plurality of external terminals 120a and 120b, a plurality of connection terminals 130a to 130c, and a busbar 140. In one embodiment, a charging or discharging device 100 may further include at least one base plate 110, a rail 150, and a busbar cover 160.

[0059] In one embodiment, a bus bar cover 160 may be disposed between a first terminal 130a and a third terminal 130c. A main body 210 of a battery cell 200 may be mounted on a bus bar cover 160 of a charging or discharging device 100. The bus bar cover 160 may minimize upward exposure of a bus bar 140. In other words, a bus bar cover 160 may minimize contact of a battery cell 200 mounted on a charging or discharging device 100 with a bus bar 140.

[0060] In one embodiment, the distance d1 between a third terminal 130c and a first terminal 130a may be greater than a main body length d2 of a battery cell 200. A main body length d2 may represent the length of a main body 210 of a battery cell 200 in a second horizontal direction (e.g., in the X-axis direction). The distance d1 between a third terminal 130c and a first terminal 130a may be adjusted as the third terminal 130c moves. The distance d1 between a third terminal 130c and a first terminal 130a may be determined by considering a main body length d2 and / or the distance between electrode tabs 220a and 220b of a battery cell 200.

[0061] In one embodiment, a first electrode tab 220a of a battery cell 200 may be electrically connected to a first external terminal 120a via a connecting portion 135a of a first terminal 130a. A second electrode tab 220b of a battery cell 200 may be electrically connected to a second external terminal 120b via a connecting portion 135c of a third terminal 130c and a busbar 140.

[0062] Fig. Figure 6 is a diagram illustrating a state in which a third terminal has moved according to an embodiment. The 100-B3 in Fig. 6 shows a cross section of B3.

[0063] With reference to the Fig. 5 and Fig. 6, a third terminal 130c of a charging or discharging device 100 may move in a second horizontal direction (e.g., in the X-axis direction) relative to a first terminal 130a.

[0064] In one embodiment, a busbar cover 160 may be disposed between a third terminal 130c and a first terminal 130a. In one embodiment, a busbar cover 160 may move along with the third terminal 130c. In this case, the length of the busbar cover 160 may be adjusted. For example, as the extent to which a cover member 161 is accommodated in a receiving portion 163 increases, the length of a busbar cover 160 may decrease, and as the extent to which a cover member 161 is accommodated in a receiving portion 163 decreases, the length of a busbar cover 160 may increase.

[0065] In one embodiment, as in Fig. As shown in Figure 6, a third terminal 130c may move along a second horizontal direction (e.g., in the X-axis direction) such that the distance d1 from a first terminal 130a decreases. In this case, the length of a busbar cover 160 may decrease.

[0066] In one embodiment, in contrast to Fig. 6, a third terminal 130c may move along a second horizontal direction (e.g., in the X-axis direction) such that the distance d1 from a first terminal 130a increases. In this case, the length of a busbar cover 160 may increase.

[0067] Fig. 7 shows a diagram for explaining a state in which a battery cell of a first type is connected to a charging or discharging device according to an embodiment. 100-B4 in Fig. 7 shows a cross section of B4.

[0068] As in Fig. As shown in Figure 7, a battery cell 300 may include a main body 310 and electrode tabs 320a and 320b. Here, the type of battery cell 300 may be a first type.

[0069] In one embodiment, a busbar cover 160 may be disposed between a first terminal 130a and a third terminal 130c. A main body 310 of a battery cell 300 may be mounted on a busbar cover 160.

[0070] In one embodiment, the distance between a third terminal 130c and a first terminal 130a may be greater than the length of a main body of a battery cell 300. The length of the main body may represent the length of a main body 310 of a battery cell 300 in a second horizontal direction (e.g., in the X-axis direction).

[0071] In one embodiment, a first electrode tab 320a of a battery cell 300 may be electrically connected to a first external terminal 120a via a connecting portion of a first terminal 130a. A second electrode tab 320b of a battery cell 300 may be electrically connected to a second external terminal 120b via a connecting portion of a third terminal 130c and a bus bar 140.

[0072] With reference to the Fig. 5 and Fig. 7, the present disclosure may provide a charging or discharging device 100 that is compatible with each of the battery cells 200 and 300 having different lengths.

[0073] Fig. 8 is a diagram illustrating a state in which a battery cell of a second type is coupled to a charging or discharging device according to an embodiment.

[0074] As in Fig. 8, a battery cell 400 may include a main body 410 and electrode tabs 420a and 420b. Here, the type of battery cell 400 may be a second type. A second type may mean that a pair of electrode tabs 420a and 420b of a battery cell 400 protrude in the same direction. In one embodiment, the electrode tabs 420a and 420b may include a first electrode tab 420a and a second electrode tab 420b protruding in the same direction from a main body 410. A first electrode tab 420a and a second electrode tab 420b may be electrode tabs with different polarities. A main body 410 may include a cathode, an anode, an electrolyte, and a housing in which they are housed. In one embodiment, a main body 410 may further include an electrolyte.

[0075] In one embodiment, a main body 410 of a battery cell 400 may be mounted on at least a portion of a bus bar cover 160 of a charging or discharging device 100.

[0076] In one embodiment, the distance between a third terminal 130c and a first terminal 130a may be greater than a main body length of a battery cell 400. A main body length may represent the length of a main body 410 of a battery cell 400 in a second horizontal direction (e.g., in the X-axis direction).

[0077] In one embodiment, a first electrode tab 420a of a battery cell 400 may be electrically connected to a first external terminal 120a via a connecting portion of a first terminal 130a. A second electrode tab 420b of a battery cell 400 may be electrically connected to a second external terminal 120b via a connecting portion of a second terminal 130b.

[0078] As in the Fig. 7 and Fig. 8, the present disclosure may provide a charging or discharging device 100 that is compatible with each of the various types of battery cells 300 and 400.

[0079] Fig. 9 is a diagram for explaining a terminal of a charging or discharging device according to an embodiment.

[0080] As in Fig. As shown in Figure 9, a terminal block 830 may include a base frame 831, a pressing portion 832, an adjusting portion 833, a slot portion 834, and a connecting portion 835. A terminal block 830 may be one or each of the first terminal block 130a and second terminal block 130b described above.

[0081] A base frame 831 may secure a component of a terminal 830. In one embodiment, a base frame 831 may include a lower frame, a connecting frame, and an upper frame. In one embodiment, an adjusting portion 833 may be inserted into a through-hole penetrating an upper frame. A lower frame may be disposed on a base plate 110. An upper frame may be spaced apart from a base plate 110 in a height direction (e.g., in the Z-axis direction). A connecting frame may connect an upper frame and a lower frame.

[0082] A pressure section 832 may be arranged on an upper part of an electrode tab of a battery cell. The height of the pressure section 832 may be adjusted by an adjustment section 833. In one embodiment, the pressure section 832 may contain a conductive material.

[0083] An electrode tab of a battery cell may be inserted into a slot portion 834. A slot portion 834 may refer to a space between a pressure portion 832 and a connection portion 835.

[0084] A connecting portion 835 may be electrically connected to an external terminal 120. A connecting portion 835 may include a conductive material. An external terminal 120 may be one or each of a first external terminal 120a and a second external terminal 120b. For example, a lower end of a connecting portion 835 may be in contact with an upper portion of an external terminal 120.

[0085] A connecting portion 835 may be arranged at a lower part of an electrode tab of a battery cell.

[0086] An adjustment section 833 can adjust the height of a pressure section 832. A lower end of an adjustment section 833 can be in contact with an upper end of a pressure section 832. For example, if an adjustment section 833 is rotated clockwise or counterclockwise, the height of a pressure section 832 can be increased or decreased.

[0087] In one embodiment, when an electrode tab of a battery cell is inserted into a slot portion 834, the height of a pressing portion 832 can be gradually lowered by an adjusting portion 833. In this case, the pressing portion 832 can pressurize an upper portion of the electrode tab of the battery cell so that a lower portion of the electrode tab can be in contact with an upper portion of a connecting portion 835. In this case, the electrode tab of the battery cell can be electrically connected to an external terminal 120 via the connecting portion 835.

[0088] Fig. 10 is a diagram for explaining a terminal of a charging or discharging device according to an embodiment.

[0089] As in Fig. As shown in Figure 10, a terminal 930 may include a base frame 931, a pressing portion 932, an adjusting portion 933, a slot portion 934, and a connecting portion 935. A terminal 930 may be the third terminal 130c described above. In one embodiment, a terminal 930 may further include an elastic member 936.

[0090] A base frame 931 may secure a component of a terminal block 930. In one embodiment, a base frame 931 may include a lower frame, a connecting frame, and an upper frame. In one embodiment, an adjusting portion 933 may be inserted into a through-hole penetrating an upper frame. A lower frame may be disposed on a rail 150. An upper frame may be spaced apart in a height direction (e.g., in the Z-axis direction) from a rail 150 or a base plate 110. A connecting frame may connect an upper frame and a lower frame.

[0091] An electrode tab of a battery cell can be inserted into a slot portion 934. A slot portion 934 can refer to a space between a pressure portion 932 and a connection portion 935.

[0092] A pressure section 932 may be arranged at an upper portion of an electrode tab of a battery cell. The height of the pressure section 932 may be adjusted by an adjustment section 933. In one embodiment, the pressure section 932 may contain a conductive material.

[0093] A connecting portion 935 may be arranged at a lower part of an electrode tab of a battery cell. The connecting portion 935 may contain a conductive material. The height of the connecting portion 935 may be adjusted by an adjusting portion 933.

[0094] An elastic element 936 can be arranged between a pressure section 932 and a connecting section 935.

[0095] An adjustment section 933 can adjust the height of a pressing section 932. An adjustment section 933 can adjust the height of a connecting section 935 through a pressing section 932 and an elastic member 936. A lower end of an adjustment section 933 can be in contact with an upper end of a pressing section 932. For example, when an adjustment section 933 is rotated clockwise or counterclockwise, the height of a pressing section 932 can be increased or decreased.

[0096] In one embodiment, a connecting portion 935 may be in a state of being spaced apart from a bus bar 140 or in contact with a bus bar 140 depending on the adjustment by an adjusting portion 933.

[0097] In a particular embodiment, an elastic member 936 may be compressed when the height of a compression portion 932 is lowered by an adjustment portion 933. The height of a connecting portion 935 is lowered by a compressed elastic member 936, and a connecting portion 935 may be in contact with a busbar 140. In this case, the connecting portion 935 may be electrically connected to the busbar 140. For example, when a terminal 930 is stopped, a connecting portion 935 may be in contact with a busbar 140 through an adjustment portion 933.

[0098] In a particular embodiment, an elastic member 936 can be tensioned when the height of a compression portion 932 is increased by an adjustment portion 933. The height of a connection portion 935 increases due to the restoring force of a tensioned elastic member 936, and a connection portion 935 can be separated from a busbar 140. In this case, the electrical connection of the connection portion 935 to the busbar 140 can be interrupted. For example, when a connection terminal 930 moves along a rail 150, a connection portion 935 can be separated from a busbar 140 by an adjustment portion 933.

[0099] In one embodiment, when an electrode tab of a battery cell is inserted into a slot portion 934, the height of a pressing portion 932 may be gradually lowered by an adjusting portion 933. In this case, the pressing portion 932 pressurizes an upper portion of the electrode tab of the battery cell so that a lower portion of the electrode tab may be in contact with an upper portion of a connecting portion 935. Furthermore, a lower portion of a connecting portion 935 may be in contact with an upper portion of a bus bar 140. In this case, an electrode tab of a battery cell may be electrically connected to the bus bar 140 via the connecting portion 935.

[0100] Fig. 11 is a drawing for explaining a bus bar cover of a charging or discharging device according to an embodiment.

[0101] As in Fig.As shown in Figure 11, a busbar cover 160 may include a cover member 161 and a receiving member 163. One end of the busbar cover 160 may be attached to a first terminal, and the other end of the busbar cover 160 may be attached to a third terminal. A first terminal and a third terminal may be spaced apart from each other in a second horizontal direction (e.g., in the X-axis direction).

[0102] At least a portion of a cover member 161 may be housed in a receiving member 163, and the remainder of the cover member 161 may protrude from the receiving member 163. At least a portion of a cover member 161 may protrude along a second horizontal direction (e.g., X-axis direction). A protruding end of a cover member 161 may be attached to a first terminal.

[0103] A receiving element 163 may include at least one rotating shaft 164, a latch 165, a lever 166, a switch 167, and a housing. At least a portion of a cover element 161, a rotating shaft 164, a latch 165, a lever 166, and at least a portion of a switch 167 may be housed in a housing.

[0104] A rotating shaft 164 can wind or unwind a cover member 161. In one embodiment, a rotating shaft 164 can wind or unwind a cover member 161 while rotating clockwise or counterclockwise. The other end of the cover member 161 can be attached to the rotating shaft 164. When a rotating shaft 164 winds a cover member 161, the extent to which the cover member 161 is housed inside a housing can increase. When a rotating shaft 164 unwinds a cover member 161, the extent to which the cover member 161 is housed inside a housing can decrease.

[0105] A latch 165 may be coupled to a rotating shaft 164. A latch 165 may rotate along with a rotating shaft 164. A latch 165 may be in the form of a gear, but is not limited thereto, and may be formed in various shapes.

[0106] A lever 166 can prevent the rotation of a latch 165 in a direction in which a cover member 161 is wound either clockwise or counterclockwise. A lever 166 can only be rotated in one direction due to interference with a latch 165.

[0107] A switch 167 can separate a lever 166 from a latch 165. In this case, the interference with the latch 165 is removed, allowing a cover element 161 to be wound up.

[0108] The structure of the receiving section 163 described above is only an example and can be implemented in various ways.

[0109] In one embodiment, a receiving portion (163) may include a spring element, a lever (166) and a switch (167).

[0110] A spring element may be connected to one end of a cover element (161). For example, one end of a cover element (161) may be an end different from the one attached to a first terminal of the two ends of the cover element. A spring element may wind up the cover element by a restoring force when a cover element is unwound. For example, a spring element may be formed of an elastic material and have a spiral shape. The length of a spring element may increase when a cover element (161) is unwound and may wind up the cover element (161) by the restoring force.

[0111] A lever (166) may be in contact with a cover element (161). A lever (166) may prevent the winding of a cover element. For example, a lever (166) may prevent the winding of a cover element (161) by a frictional force with the cover element.

[0112] A switch can separate a lever (166) from a cover element (161) so that the cover element (161) is wound up by a spring element.

Claims

[1] A loading or unloading device comprising: a plurality of external terminals, including a first external terminal and a second external terminal for charging or discharging a battery cell; a first terminal electrically connected to the first external terminal; a busbar electrically connected to the second external terminal; a second terminal spaced from the first terminal in a first horizontal direction and electrically connected to the second external terminal; and a third terminal spaced from the first terminal in a second horizontal direction perpendicular to the first horizontal direction and electrically connected to the second external terminal via the busbar. [2] A charging or discharging device according to claim 1, wherein the first terminal is electrically connected to a first electrode tab of the battery cell, and one of the second terminal or the third terminal is electrically connected to a second electrode tab of the battery cell. [3] A charging or discharging device according to claim 1 or 2, wherein the second connecting terminal is electrically connected to the second electrode tongue when the first electrode tongue and the second electrode tongue protrude in the same direction. [4] A charging or discharging device according to any one of the preceding claims, wherein the third connection terminal is electrically connected to the second electrode tongue when the first electrode tongue and the second electrode tongue protrude in opposite directions. [5] A loading or unloading device according to any one of the preceding claims, further comprising: a rail arranged below the third terminal, the third terminal being movable along the second horizontal direction by the rail. [6] A charging or discharging device according to any one of the preceding claims, wherein the distance between the third terminal and the first terminal is greater than the length of a main body of the battery cell. [7] A charging or discharging device according to any one of the preceding claims, further comprising: a base plate disposed below the plurality of external terminals, the first terminal, the second terminal and the third terminal, wherein at least a part of the bus bar is disposed below the base plate. [8] The charging or discharging device according to claim 7, wherein the base plate includes an opening formed to expose at least a part of an upper portion of the bus bar, and the opening is located in a region between the third terminal and the first terminal. [9] A charging or discharging device according to any preceding claim, further comprising: a bus bar cover disposed between the first terminal and the third terminal and to which the main body of the battery cell is attached. [10] The charging or discharging device according to claim 9, wherein the bus bar cover includes: a cover member whose length is adjusted when the third terminal moves along the second horizontal direction; and a receiving portion in which at least a part of the cover member is accommodated. [11] A loading or unloading device according to claim 10, wherein the receiving section includes: a rotating shaft that winds or unwinds the cover element; a lock coupled to the rotating shaft; a lever that prevents the latch from rotating in a direction that winds the cover member either clockwise or counterclockwise; and a switch that separates the lever from the latch so that the cover element is wound up. [12] A loading or unloading device according to claim 10, wherein the receiving section includes: a spring member connected to one end of the cover member and winding the cover member by a restoring force when the cover member is unwound; a lever in contact with the cover element and preventing the cover element from winding up; and a switch that separates the lever from the cover element so that the cover element is wound up by the spring element. [13] A charging or discharging device according to any one of the preceding claims, wherein at least one of the first terminal or the second terminal includes: a pressing portion disposed at an upper portion of a corresponding one of a first electrode tab and a second electrode tab of the battery cell, which protrude in the same direction; a connecting portion disposed at a lower portion of the corresponding electrode tab and electrically connected to a corresponding one of the first external terminal and the second external terminal; and an adjusting section that adjusts the height of the pressing section so that the pressing section presses the upper section of the corresponding electrode tongue so that the corresponding electrode tongue is electrically connected to the connecting section. [14] A charging or discharging device according to claim 1, wherein the third terminal includes: a pressing portion disposed at an upper portion of a second electrode tab of a first electrode tab and a second electrode tab of the battery cell, which protrude in opposite directions; a connecting portion disposed at a lower portion of the second electrode tongue; and an adjusting portion that adjusts the height of the pressing portion so that the pressing portion presses the upper portion of the second electrode tongue to electrically connect the second electrode tongue to the bus bar via the connecting portion. [15] The loading or unloading device according to claim 14, wherein the third connection terminal further includes an elastic member connected between the pressing portion and the connecting portion. [16] A charging or discharging device according to claim 14, wherein the connecting portion is in either a state spaced apart from the bus bar or a state in contact with the bus bar depending on the adjustment by the adjusting portion.

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