Battery pack, power system, and vehicle

Abstract

Disclosed is a battery pack, a power system, and a vehicle in which the durability of a connection terminal is improved. To achieve the object, a battery pack according to the present application is configured to be electrically connected to a power system including a mounting portion having an accommodation space and one or more first connection terminals located in the accommodation space of the mounting portion, and includes: a plurality of battery cells; a battery pack case having an internal space for accommodating the plurality of battery cells, which is inserted into the accommodation space of the mounting portion and is coupled to the mounting portion by rotational movement at an insertion position; and a second connection terminal electrically connected to the plurality of battery cells and capable of coming into contact with the first connection terminal when the battery pack case is coupled to the mounting portion by rotational movement.

Description

Technical Field

[0001] This disclosure relates to a battery pack, a power system, and a vehicle, and more particularly to a battery pack, a power system, and a vehicle including highly durable connection terminals.

[0002] This application claims priority to Korean Patent Application 10-2020-0169919, filed in Korea on December 7, 2020, the disclosure of which is incorporated herein by reference. Background Technology

[0003] Currently, commercially available rechargeable batteries include nickel-cadmium (NiCd) batteries, nickel-metal hydride (NiMH) batteries, nickel-zinc (NiZn) batteries, and lithium-ion batteries. Among them, lithium-ion batteries have almost no memory effect compared to nickel-based batteries, thus allowing for free charging and discharging, resulting in extremely low self-discharge rates and high energy density.

[0004] These lithium-ion rechargeable batteries primarily use lithium-based oxides and carbon materials as the positive and negative electrode active materials, respectively. A lithium-ion rechargeable battery includes an electrode assembly and a casing. The electrode assembly contains positive and negative electrode plates coated with the positive and negative electrode active materials, respectively, with a separator inserted between the positive and negative electrode plates. The casing is a cylindrical battery can, or battery bag casing, used to seal and contain the electrode assembly and electrolyte.

[0005] Recently, rechargeable batteries have been widely used not only in small devices such as portable electronic devices, but also in medium and large devices such as automobiles and energy storage equipment. When used in such medium and large devices, a large number of rechargeable batteries are electrically connected to increase capacity and output.

[0006] In recent years, with the increasing demand for large-capacity structures, including their use as energy storage, there has been an increased demand for battery packs consisting of multiple secondary batteries connected in series and / or parallel, including module boxes that house these secondary batteries, and battery management systems (BMS).

[0007] Typically, this type of battery pack also includes a battery pack housing for receiving and storing battery modules embedded with multiple secondary batteries. The battery pack housing is provided with connection terminals for electrical connection to other external devices. In other words, these connection terminals are configured to electrically connect to another connection terminal of an external device for transmitting power from the battery pack to that external device. For example, the external device may have a receiving space for inserting the battery pack. In this case, when the battery pack is inserted into the receiving space, the connection terminals included in the battery pack and the connection terminals included in the receiving space of the external device come into contact with each other to form an electrical connection.

[0008] However, when a conventional battery pack is inserted into the receiving space of an external device and simultaneously electrically connected to the device, collisions inevitably occur between the connection terminals as the battery pack's terminals and another connection terminal of the external device come into contact with each other, in the direction of battery pack insertion. Furthermore, repeated insertion and removal of the battery pack damages the connection terminals and reduces their durability due to frequent collisions. Moreover, as the load on the battery pack increases, the heavy load is transmitted to both the battery pack's connection terminals and other connection terminals of the external device, potentially leading to more severe damage to the connection terminals.

[0009] Therefore, the problem with traditional battery packs and power systems that include such battery packs is that poor connection between the battery pack and external devices can occur in a short period of time, or the lifespan of the connection terminals can be shortened, causing inconvenience to users. Summary of the Invention

[0010] Technical issues

[0011] This disclosure is designed to address the problems of the prior art, and therefore aims to provide a battery pack, power system, and vehicle including connection terminals with high durability.

[0012] These and other objects and advantages of this disclosure may be understood from the following detailed description and will become even clearer from exemplary embodiments of this disclosure. Furthermore, it will be readily understood that the objects and advantages of this disclosure may be achieved by the means and combinations thereof shown in the appended claims.

[0013] Technical solution

[0014] In one aspect of this disclosure, a battery pack is provided.

[0015] The battery pack is configured to be electrically connected to a power system, the power system including a mounting portion having a receiving space and at least one first connection terminal located in the receiving space of the mounting portion, the battery pack including:

[0016] Multiple battery cells;

[0017] A battery pack housing having an internal space to accommodate the plurality of battery cells, and configured to be inserted into the accommodating space of the mounting portion and coupled to the mounting portion at the insertion portion by rotational movement; and

[0018] The second connection terminal is electrically connected to the plurality of battery cells and is configured to contact the first connection terminal when the battery pack housing is rotated and connected to the mounting portion.

[0019] The second connection terminal can be positioned at a predetermined distance from the rotation axis of the battery pack housing.

[0020] The second connection terminal may include:

[0021] An extension, the extension extending in an arc shape; and

[0022] At least one connecting portion extends from each of the extension portions toward another connecting terminal.

[0023] The battery pack housing may further include:

[0024] A support member, which is formed as a portion of the lower surface of the battery pack housing that protrudes from the outer surface of the battery pack housing in the direction in which the battery pack housing is inserted into the mounting portion.

[0025] The mounting portion may include an insertion guide groove, which is formed by recessing a portion of the inner surface of the receiving space in an outward direction and extends in a vertical direction.

[0026] The battery pack housing may include:

[0027] A guide rod is formed as a portion of the outer surface of the battery pack housing that protrudes in the outward direction and extends in the vertical direction, and is configured to be inserted into the insertion guide groove.

[0028] The battery pack may also include:

[0029] A separation member is configured to restrict the rotational movement of the battery pack housing within the mounting portion, or to release the restriction on the rotational movement so that the battery pack housing can perform the rotational movement.

[0030] The mounting portion may include a fixing groove, which is recessed to a predetermined size, and

[0031] The separating member may include a fixing protrusion configured to be inserted into the fixing groove.

[0032] In one aspect of this disclosure, a power system is provided configured to supply power to an external device, the power system comprising:

[0033] The mounting section has a receiving space;

[0034] At least one first connection terminal, the at least one first connection terminal being electrically connected to the external device and located within the mounting portion; and

[0035] A battery pack, comprising: a plurality of battery cells; a battery pack housing having an internal space to accommodate the plurality of battery cells and configured to be inserted into the accommodating space of the mounting portion and coupled to the mounting portion at the insertion portion by rotational movement; and a second connecting terminal electrically connected to the plurality of battery cells and configured to contact the first connecting terminal when the battery pack housing is coupled to the mounting portion by the rotational movement.

[0036] The power system may further include: an elastic member configured to elastically press the battery pack housing in a direction opposite to the insertion direction when the battery pack is inserted into the mounting portion.

[0037] In one aspect of this disclosure, a vehicle is provided that includes the aforementioned electrical system.

[0038] Technical effect

[0039] According to one aspect of this disclosure, a second connecting terminal is provided that is configured to contact a first connecting terminal when the battery pack housing is rotated and connected to a mounting portion, so that the connecting terminals can be connected to each other by rotation. Therefore, the load of the heavy battery pack is not transmitted to the connecting terminals, thus minimizing damage to the connecting terminals. In other words, unlike the conventional method of electrically connecting the connecting terminals by inserting a conventional battery pack housing downwards, the connecting terminals do not collide with each other in the vertical direction, thus effectively improving the durability of the connecting terminals. Attached Figure Description

[0040] The accompanying drawings illustrate preferred embodiments of the present disclosure and, together with the foregoing disclosure, serve to provide a further understanding of the technical features of the present disclosure; therefore, the present disclosure should not be construed as limited to the drawings.

[0041] Figure 1 This is a schematic perspective view of a battery pack according to an embodiment of the present disclosure.

[0042] Figure 2 This is a schematic exploded perspective view showing the separation of the battery pack and the power system mounting portion according to an embodiment of the present disclosure.

[0043] Figure 3 This is a schematic perspective view showing the insertion of a battery pack into a power system mounting section according to an embodiment of the present disclosure.

[0044] Figure 4 This is a schematic perspective view showing the insertion of the battery pack into the mounting section of the power system according to an embodiment of the present disclosure, and the subsequent rotation of the battery pack.

[0045] Figure 5This is a schematic plan view of the installation section of a power system according to an embodiment of the present disclosure.

[0046] Figure 6 This is a schematic bottom view of a battery pack according to an embodiment of the present disclosure.

[0047] Figure 7 This is a schematic front view of the battery cells of a battery pack according to an embodiment of the present disclosure.

[0048] Figure 8 This is a schematic partial perspective view of some internal components of a battery pack according to an embodiment of the present disclosure.

[0049] Figure 9 This is a schematic bottom view of a battery pack according to another embodiment of the present disclosure.

[0050] Figure 10 This is a schematic vertical cross-sectional view of the second connection terminal and the first connection terminal of a battery pack according to another embodiment of the present disclosure.

[0051] Figure 11 This is a schematic perspective view of the detachable components of a battery pack according to an embodiment of the present disclosure.

[0052] Figure 12 This is a schematic horizontal cross-sectional view of the connecting and separating components of a power system according to an embodiment of the present disclosure.

[0053] Figure 13 This is a schematic plan view of the cell frame of a battery pack according to an embodiment of the present disclosure.

[0054] Figure 14 This is a schematic diagram of a vehicle according to an embodiment of the present disclosure. Detailed Implementation

[0055] Preferred embodiments of the present disclosure will be described in detail below with reference to the accompanying drawings. Before the description, it should be understood that the terminology used in the specification and appended claims should not be construed as limited to its general and dictionary meaning, but should be interpreted based on the meaning and concepts corresponding to the technical aspects of the present disclosure, on the basis of allowing the inventors to appropriately define the terms to obtain the best interpretation.

[0056] Therefore, the description presented herein is merely a preferred example for illustrative purposes and is not intended to limit the scope of this disclosure. It should be understood that other equivalents and modifications may be made without departing from the scope of this disclosure.

[0057] Figure 1 This is a schematic perspective view of a battery pack according to an embodiment of the present disclosure. Figure 2This is a schematic exploded perspective view showing the separation of the battery pack and the power system mounting portion according to an embodiment of the present disclosure. Figure 3 This is a schematic perspective view showing the insertion of a battery pack into a power system mounting section according to an embodiment of the present disclosure. Figure 4 This is a schematic perspective view showing the insertion of the battery pack into the mounting section of the power system according to an embodiment of the present disclosure, and the subsequent rotation of the battery pack. Figure 5 This is a schematic plan view of the installation section of a power system according to an embodiment of the present disclosure. Figure 6 This is a schematic bottom view of a battery pack according to an embodiment of the present disclosure. Figure 7 This is a schematic front view of the battery cells of a battery pack according to an embodiment of the present disclosure.

[0058] Reference Figures 1 to 7 According to embodiments of the present disclosure, the battery pack 100 may include a plurality of battery cells 110, a battery pack housing 120, and a second connection terminal 130.

[0059] In detail, the battery pack 100 can be configured to direct... Figure 2 The power system 200 supplies power. The power system 200 can be configured to supply power to external devices. These external devices can be... Figure 14 The vehicle is 300. The vehicle can be, for example, a hybrid vehicle, an electric vehicle, an electric scooter, an electric bicycle, an electric motorcycle, or a computer.

[0060] The power system 200 can be configured to control the charging and discharging of the battery pack 100. The power system 200 may include a mounting portion 210 having a receiving space S1 for accommodating the battery pack 100. At least one first connection terminal 220 may be located in the receiving space S1 of the mounting portion 210. The first connection terminal 220 may be configured to be electrically connected to the battery pack 100.

[0061] Multiple battery cells 110 may include, for example, a cylindrical can. Electrode terminals 111 and 112 may be respectively disposed at the upper and lower parts of the cylindrical can. For example, the upwardly protruding positive terminal 111 may be disposed at the upper part of the battery cell 110. The negative terminal 112 may be disposed at the lower part of the battery cell 110. For example, the lower part of the battery cell 110 may be the negative terminal 112.

[0062] Since the configuration of the cylindrical battery cell 110 is well known to those skilled in the art at the time of this disclosure, a more detailed description thereof will be omitted herein. Although in Figure 7 A cylindrical battery cell is shown as an example; however, the battery pack 100 according to this disclosure is not limited to a specific configuration of cylindrical battery cells 110. In other words, various types of battery cells 110 known at the time of filing of this disclosure may be used in the battery pack 100 according to this disclosure.

[0063] Figure 8 This is a schematic partial perspective view of some internal components of a battery pack according to an embodiment of the present disclosure.

[0064] Combination Figures 5 to 7 Reference Figure 8 The battery pack 100 according to embodiments of this disclosure may further include a connecting plate 140. The connecting plate 140 may include metals such as aluminum, copper, and nickel. The positive terminal 111 or negative terminal 112 of a plurality of cylindrical battery cells 110 may be configured to contact a portion of the connecting plate 140. The connecting plate 140 may electrically connect the plurality of battery cells 110 to each other in series, parallel, or series-parallel configurations.

[0065] The connecting plate 140 can be electrically connected to the second connecting terminal 130 via a wire 142. For example, one end of the wire 142 can be connected to a portion of the connecting plate 140, and the other end can be connected to the second connecting terminal 130.

[0066] Return to reference Figures 1 to 3 The battery pack housing 120 may have an internal space to accommodate multiple battery cells 110. The battery pack housing 120 may have a hollow cylindrical shape. The battery pack housing 120 may include an electrically insulating material. For example, the battery pack housing 120 may include polyvinyl chloride (PVC) material. The battery pack housing 120 may be configured to be inserted into the receiving space S1 of the mounting portion 210. The receiving space S1 of the mounting portion 210 may have dimensions corresponding to the external shape of the battery pack housing 120.

[0067] For example, the receiving space S1 may have a cylindrical shape that extends substantially vertically. The battery pack housing 120 may be configured to rotate from its position where it is inserted into the receiving space S1. For example, as Figure 3 As shown, when the battery pack housing 120 has a cylindrical shape, the battery pack housing 120 can be configured to rotate using a central axis extending vertically from the center of the cylinder as a rotation axis P. The battery pack housing 120 can be configured to connect with the mounting portion 210 by rotating and moving the battery pack housing 120 at the position where it is inserted into the receiving space S1 of the mounting portion 210. In this case, the battery pack housing 120 can be connected to the mounting portion 210 by connecting with a portion of the receiving space S1.

[0068] A handle 122 may be provided on the upper part of the battery pack housing 120. The handle 122 can be used by the user to transport the battery pack 100 to another location. When the battery pack housing 120 is inserted into the receiving space S1 of the mounting part 210, the handle 122 can be used by the user to move the battery pack 100 in the insertion direction or to rotate the battery pack 100.

[0069] Return to reference Figures 5 to 8 The second connection terminal 130 can be configured to be electrically connected to a plurality of battery cells 110. As described above, the second connection terminal 130 can be electrically connected to a plurality of battery cells 110 via a connection plate 140 and wires 142. When the battery pack housing 120 is connected to the mounting portion 210 by rotational movement, the second connection terminal 130 can be configured to contact the first connection terminal 220.

[0070] For example, when Figure 3 The battery pack housing 120 shown is inserted into the receiving space S1 of the mounting part 210, as shown. Figure 4 When the battery pack housing 120 shown is rotated approximately 90 degrees clockwise around its vertical central axis, as... Figure 6 The two second connection terminals 130 shown can be located at the 12 o'clock and 6 o'clock positions on the plane, respectively, so as to connect with... Figure 5 As shown, two first connection terminals 220 located at the 12 o'clock and 6 o'clock positions respectively on the plane are in contact. The battery pack housing 120 can be positioned facing the first connection terminals 220. At this time, the corresponding portion of the second connection terminal 130 can contact the corresponding portion of the first connection terminal 220.

[0071] Therefore, according to the structure of this disclosure, since a second connecting terminal 130 is included, configured to contact the first connecting terminal 220 when the battery pack housing 120 is coupled to the mounting portion 210 by rotational movement, the connecting terminals can be connected to each other by rotational movement. Consequently, when the battery pack 100 is inserted, the load (momentum) of the battery pack 100 is not transmitted to the connecting terminals, thereby minimizing damage to the connecting terminals. In other words, unlike the conventional method of electrically connecting the connecting terminals by downward insertion of the battery pack housing 120, the connecting terminals do not collide in the vertical direction, thus effectively improving the durability of the connecting terminals.

[0072] Return to reference Figure 3 and Figure 6 The second connecting terminal 130 can be positioned to... Figure 3 The first connecting terminal 220 is positioned at a predetermined distance from the rotation axis P for the rotational movement of the battery pack housing 120, depending on whether the battery pack housing 120 is inserted into the mounting portion 210. In this case, the first connecting terminal 220 can be positioned at a distance from the rotation axis P for the rotational movement of the battery pack housing 120, with the distance between the second connecting terminal 130 and the rotation axis P.

[0073] Therefore, according to the structure of this disclosure, since the second connecting terminal 130 is spaced apart from the rotation axis P for the rotational movement of the battery pack housing 120 by a predetermined distance, and the first connecting terminal 220 is also spaced apart from the rotation axis P by the same distance between the second connecting terminal 130 and the rotation axis P, the battery pack housing 120 is connected to the mounting portion 210 through the rotational movement of the battery pack housing 120, thereby allowing the first connecting terminal 220 to contact the second connecting terminal 130. In other words, according to this disclosure, by simply rotating the battery pack 100 with the handle 122, the user can not only fix the battery pack 100 to the mounting portion 210, but also reliably connect the first connecting terminal 220 to the second connecting terminal 130.

[0074] Return to reference Figure 5 and Figure 6 The second connecting terminal 130 of this disclosure may have two connecting portions 130a and 130b extending in an arc shape, respectively. The two connecting portions 130a and 130b may be spaced apart from each other. The two connecting portions 130a and 130b may be spaced apart from each other such that the first connecting terminal 220 can be inserted therebetween. In other words, when the first connecting terminal 220 is inserted between the two connecting portions 130a and 130b, the two connecting portions 130a and 130b and the first connecting terminal 220 may contact each other.

[0075] Each of the two connecting portions 130a and 130b of the second connecting terminal 130 may include an extension 131 and at least one connecting portion 132. The extension 131 may have a shape that extends in an arc shape.

[0076] Furthermore, the connecting portion 132 may extend from each of the at least two extensions 131 to the space between the at least two extensions 131. The connecting portion 132 may be configured to contact the first connecting terminal 220 when the battery pack housing 120 rotates and engages with the mounting portion 210. In other words, the connecting portion 132 may be configured to physically contact other connecting terminals. In other words, as... Figure 3 As shown, when the battery pack 100 is inserted into the mounting portion 210 and rotated 90 degrees, the first connecting terminal 220 can be inserted between the two connecting portions 130a and 130b of the second connecting terminal 130. At this time, the connecting portion 132 of the second connecting terminal 130 can contact the first connecting terminal 220.

[0077] For example, such as Figure 6 As shown, one connecting portion 130a may include three connecting portions 132, and another connecting portion 130b may include two connecting portions 132.

[0078] The first connecting terminal 220 may have a shape that extends in an arc shape. However, the shape of the first connecting terminal 220 is not limited to this shape. For example, the first connecting terminal 220 and the second connecting terminal 130 may have shapes that are opposite to each other. In other words, the first connecting terminal 220 may have a similar structure to the at least two extensions 131 and the at least one connecting portion 132.

[0079] Therefore, according to this structure of the present disclosure, since the second connection terminal 130 of the present disclosure includes an extension 131 and a connection portion 132, when the battery pack housing 120 rotates and moves and connects with the mounting portion 210, the second connection terminal 130 can reliably contact the first connection terminal 220. Therefore, according to the present disclosure, the reliability of the electrical connection between the battery pack 100 and the power system 200 can be improved.

[0080] Return to reference Figures 1 to 6 The mounting portion 210 of the power system 200 disclosed herein may include an insertion guide groove G1. The insertion guide groove G1 can be formed by recessing a portion of the inner surface of the receiving space S1 in an outward direction. The insertion guide groove G1 may have a shape extending in the vertical direction. For example, as... Figure 2 As shown, the insertion guide groove G1 may have a shape that extends from the upper end of the mounting portion 210 to the lower end of the mounting portion 210.

[0081] The battery pack housing 120 may include a guide rod 123. The guide rod 123 may have a shape that projects outwardly from a portion of the outer surface of the battery pack housing 120. The guide rod 123 may have a shape that extends in a vertical direction. The guide rod 123 is a separate component from the battery pack housing 120 and may have an inner surface that connects to the battery pack housing 120. The guide rod 123 may have a rectangular rod shape. However, the guide rod 123 is not limited to this shape and various different shapes can be used.

[0082] Furthermore, when the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210, the guide rod 123 can guide the battery pack 100 to a position where the second connection terminal 130 of the battery pack 100 does not face the first connection terminal 220. In other words, according to this disclosure, when the battery pack housing 120 reaches the bottom of the receiving space S1, the position of the guide rod 123 on the outer surface of the battery pack housing 120 can be set such that the second connection terminal 130 does not face the first connection terminal 220. In other words, although not shown in the figure, in the plan view, the two second connection terminals 130 can be located at the nine o'clock position and the three o'clock position, respectively, on the lower surface of the battery pack housing 120. Therefore, after the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210, rotating it clockwise by approximately 90 degrees, the second connection terminal 130 and the first connection terminal 220 can be positioned facing each other and can be in physical contact with each other.

[0083] Therefore, according to the structure of this disclosure, since the guide rod 123 is included and configured to be inserted into the insertion guide groove G1 of the mounting portion 210, when the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210, the battery pack housing 120 can be properly rotated and arranged, thereby preventing the second connection terminal 130 and the first connection terminal 220 from colliding with each other. Therefore, according to this disclosure, damage to the connection terminals caused by incorrect insertion can be reduced, thereby improving the durability of the battery pack 100.

[0084] The mounting portion 210 may include an opening 210a formed by outwardly opening a portion of its inner surface. The opening 210a may form an open space that allows the guide rod 123, inserted into the insertion guide groove G1, to rotate. The opening 210a may have a shape that extends from the insertion guide groove G1 in the rotational direction. In other words, after the guide rod 123 is fully inserted into the insertion guide groove G1, while the guide rod 123 is inserted into the open space of the opening 210a, the guide rod 123 can rotate clockwise or counterclockwise about the rotation axis P. Therefore, in this disclosure, since the guide rod 123 can rotate while being inserted into the opening 210a, the battery pack housing 120 can smoothly rotate clockwise or counterclockwise.

[0085] However, the opening portion 210a of the mounting portion 210 is not necessarily limited to an open portion. In other words, the mounting portion 210 may have an outer wall formed by recessing a portion of the inner surface of the receiving space S1 in the outward direction, so as to form a recessed space in which the guide rod 123 can rotate. In other words, the recessed portion of the outer wall is formed to have a thinner outer wall than the rest, and therefore can be referred to as a portion with steps.

[0086] Figure 9 This is a schematic bottom view of a battery pack according to another embodiment of the present disclosure.

[0087] Combination Figure 5 Reference Figure 9 , Figure 9 Battery pack 100 and Figure 6 The battery pack 100 may include a second connection terminal 130 having only one connection portion. Figure 9 Battery pack 100 and Figure 6 The battery pack 100 may also include a support member 121.

[0088] In detail, according to another embodiment of the present disclosure, the battery pack housing 120 of the battery pack 100 may further include a support member 121. The support member 121 may be formed as a portion of the lower surface of the battery pack housing 120 protruding from the outer surface of the battery pack housing 120 in the direction in which the battery pack housing 120 is inserted into the mounting portion 210.

[0089] For example, such as Figure 9 As shown, the support member 121 may have a cylindrical shape that protrudes downward from the lower surface of the battery pack housing 120. The support member 121 may be configured to face the inner bottom surface of the receiving space S1 when the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210. When the insertion of the battery pack 100 into the receiving space S1 is finished, the support member 121 may be supported upward by the inner bottom surface of the receiving space S1. In other words, the support member 121 may be configured to separate the battery pack housing 120 from the bottom surface of the receiving space S1 of the mounting portion 210 by a predetermined distance.

[0090] Figure 10 This is a schematic vertical cross-sectional view of the second connection terminal and the first connection terminal of a battery pack according to another embodiment of the present disclosure.

[0091] Combination Figure 9 Reference Figure 10 According to another embodiment of the present disclosure, the second connection terminal 130 of the battery pack 100 may have a shape that protrudes downward from the lower surface of the battery pack housing 120. The protrusion height of the second connection terminal 130 may be less than the length of the support member 121 protruding downward from the battery pack housing 120.

[0092] According to another embodiment of the present disclosure, the first connection terminal 220 of the power system 200 may have a shape that protrudes upward from the bottom surface of the receiving space S1 of the mounting portion 210. The protrusion height of the first connection terminal 220 may be less than the length of the support member 121 protruding downward from the battery pack housing 120.

[0093] Therefore, according to the structure of this disclosure, since the battery pack housing 120 includes a support member 121, the battery pack 100 can be mounted on the mounting portion 210 when the battery pack housing 120 is spaced a predetermined distance from the bottom surface of the receiving space S1 of the mounting portion 210. Subsequently, when the battery pack housing 120 is rotated and moved, the second connecting terminal 130 protruding downward from the lower surface of the battery pack housing 120 and the first connecting terminal 220 protruding upward from the bottom surface of the receiving space S1 of the mounting portion 210 can meet each other, thereby connecting or contacting each other. In other words, according to this disclosure, by forming the support member 121 on the outer surface of the battery pack housing 120 in the insertion direction, a separation space is formed between the battery pack housing 120 and the inner lower surface of the mounting portion 210, thereby preventing the second connecting terminal 130 and the first connecting terminal 220 from being damaged by collisions with other components during the insertion of the battery pack 100 into the receiving space S1 of the mounting portion 210.

[0094] Figure 11This is a schematic perspective view of the detachable components of a battery pack according to an embodiment of the present disclosure. Figure 12 This is a schematic horizontal cross-sectional view of the connecting and separating components of a power system according to an embodiment of the present disclosure.

[0095] Combination Figure 3 and Figure 4 Reference Figure 11 and Figure 12 The battery pack 100 according to embodiments of the present disclosure may further include a separation member 150. The separation member 150 may be configured to restrict rotational movement of the battery pack housing 120 inserted into the mounting portion 210, or to release the restriction on rotational movement so that rotational movement of the battery pack housing 120 is possible. For example, the separation member 150 may be connected to a portion of the mounting portion 210 using a male-female connection method.

[0096] The mounting portion 210 may include a connecting member 230 mechanically connected to the separating member 150. A retaining groove 231 recessed to a predetermined size may be formed in the connecting member 230. The separating member 150 may include a retaining protrusion 151 configured to insert into the retaining groove 231. The protruding portion of the retaining protrusion 151 may be configured to insert into the recessed space of the retaining groove 231 when the battery pack housing 120 is rotated and connected to the mounting portion 210.

[0097] Furthermore, the separating member 150 can be configured to be movable, thereby allowing the fixing protrusion 151 to separate from the fixing groove 231. A pull-out portion 152 configured to be pulled out by the user may be provided at the lower part of the separating member 150. When the pull-out portion 152 is pulled inward, the fixing protrusion 151 can separate from the fixing groove 231.

[0098] The connecting member 230 may have an inclined surface 232 extending from one end of the connecting member 230 to the fixing groove 231. The inclined surface 232 may be formed to be further recessed to a predetermined depth compared to the rest of the outer surface of the connecting member 230. The inclined surface 232 may be configured such that the depth of the recess gradually decreases from one end of the connecting member 230 to the fixing groove 231. Therefore, the fixing protrusion 151 included in the separating member 150 may move upward along the inclined surface 232 of the connecting member 230 to the fixing groove 231.

[0099] Therefore, according to the structure of this disclosure, when the battery pack housing 120 rotates within the receiving space S1 of the mounting portion 210, thereby connecting the second connecting terminal 130 and the first connecting terminal 220, the rotational movement of the battery pack housing 120 can be restricted by the separating member 150. When it is necessary to release the battery pack 100 from the receiving space S1 of the mounting portion 210, the fixed state between the separating member 150 and the connecting member 230 can be released using the extraction portion 152 of the separating member 150. Therefore, this disclosure can easily remove the restriction on the rotational movement of the battery pack housing 120.

[0100] Figure 13 This is a schematic plan view of the cell frame of a battery pack according to an embodiment of the present disclosure.

[0101] Reference Figure 13 According to embodiments of the present disclosure, the cell frame 160 of the battery pack 100 can be configured to house a plurality of battery cells 110 therein. The cell frame 160 may include an electrically insulating material. For example, the cell frame 160 may include polyvinyl chloride (PVC) material. Within the cell frame 160, the internal spaces 161 for housing the battery cells 110 may have a honeycomb shape. In other words, the cell frame 160 may have hexagonal prism-shaped internal spaces 161. Within the cell frame 160, a plurality of hexagonal prism-shaped internal spaces 161 may be arranged adjacent to each other.

[0102] Therefore, according to the structure disclosed herein, since the cell frame 160 includes a honeycomb-shaped internal space 161, the cell frame 160 can be manufactured to be lightweight and can have high mechanical rigidity, thereby reducing the weight of the battery pack 100 and effectively protecting the multiple battery cells 110 housed in the cell frame 160 from external impacts.

[0103] Figure 14 This is a schematic diagram of a vehicle according to an embodiment of the present disclosure.

[0104] and Figure 1 and Figure 2 Refer to together Figure 14 The vehicle 300 disclosed herein includes an electric system 200. The electric system 200 may include a battery pack 100 and a mounting portion 210 having a receiving space S1 for receiving the battery pack 100. For example, the vehicle 300 may include a chassis on which the electric system 200 can be mounted. The vehicle 300 may include an electric motor configured to be driven by electricity received from the electric system 200. The electric motor can provide driving force for moving the vehicle 300. However, the vehicle 300 is not limited to this. Figure 14 The type shown, and vehicle 300 can be, for example, a hybrid vehicle, electric vehicle, electric scooter, electric bicycle, electric motorcycle, or computer.

[0105] This disclosure also provides an electrical system 200 configured to supply power to an external device such as a vehicle 300. The electrical system 200 may include a mounting portion 210 having a receiving space S1 for accommodating a battery pack 100. The electrical system 200 may include at least one first connection terminal 220 electrically connected to the external device. The first connection terminal 220 may be positioned within the mounting portion 210. For example, the first connection terminal 220 may be disposed on the bottom surface of the mounting portion 210.

[0106] Return to reference Figures 1 to 6 The power system 200 may include the battery pack 100 described above. The battery pack 100 may include a plurality of battery cells 110, and the battery pack housing 120 has an internal space to accommodate the plurality of battery cells 110. The battery pack housing 120 may be inserted into the receiving space S1 of the mounting portion 210. For example, the battery pack housing 120 may have a cylindrical shape. The receiving space S1 of the mounting portion 210 may also have a near-cylindrical shape. The battery pack housing 120 may be configured to be connected to the mounting portion 210 by rotating and moving it in the position where the battery pack housing 120 is inserted into the receiving space S1 of the mounting portion 210. The battery pack 100 may also include a second connection terminal 130 electrically connected to the plurality of battery cells 110.

[0107] The mounting portion 210 may include an opening portion 210a formed by recessing a portion of the inner surface of the mounting portion 210 outward with a protruding dimension of the guide rod 123, thereby allowing the guide rod 123 inserted into the insertion guide groove G1 to move.

[0108] Moreover, such as Figure 5 As shown, the power system 200 may include an elastic member 240 in the receiving space S1 of the mounting portion 210. The elastic member 240 may be configured to elastically press the battery pack housing 120 in the opposite direction to the insertion direction when the battery pack 100 is inserted into the mounting portion 210. When the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210, the elastic member 240 may support the lower surface of the battery pack housing 120 upward.

[0109] For example, such as Figure 5 As shown, the power system 200 may include three elastic members 240 in the receiving space S1 of the mounting portion 210. The elastic members 240 may be configured to elastically press upwards against the lower surface of the battery pack housing 120 when the battery pack 100 is inserted into the receiving space S1 of the mounting portion 210. In other words, the elastic members 240 may be used to cushion the insertion force of the battery pack 100 by elastically pressing against the lower surface of the battery pack housing 120.

[0110] Therefore, according to the structure of this disclosure, since it includes an elastic member 240 configured to elastically press the battery pack housing 120, the load force of the battery pack 100 can be effectively buffered, thereby minimizing damage caused by collisions between the interior of the mounting portion 210 and the battery pack 100 during the insertion of the battery pack 100 into the mounting portion 210.

[0111] These configurations of the power system 200 can be the same as those described above. Therefore, a more detailed description of the configuration will be omitted.

[0112] At the same time, although terms such as up, down, left, right, front, and back are used in this specification to indicate direction, these terms are merely for ease of description, and it will be apparent to those skilled in the art that these terms may vary depending on the position of the target object or the position of the observer.

[0113] This disclosure has been described in detail. However, it should be understood that various changes and modifications within the scope of this disclosure will be apparent to those skilled in the art, and therefore, while the detailed description and specific examples indicate preferred embodiments of this disclosure, they are given by way of illustration only.

[0114] Explanation of reference numerals in the attached figures

[0115] 100: Battery pack; 110: Battery cell

[0116] 120: Battery pack housing; 130: Second connection terminal

[0117] 131, 132: Extension and connecting parts; 140: Connecting plate

[0118] 142: Wire; 160: Cell frame

[0119] 161: Interior space; S1: Accommodation space

[0120] 121: Support component; 122: Handle

[0121] 200: Power System; 210: Installation Department

[0122] 220: First connecting terminal P: Rotation axis

[0123] G1: Insert into guide groove 123: Guide rod

[0124] 210a: Open Department

[0125] 150, 151, 152: Separation components, fixing protrusions, extraction parts

[0126] 230: Connecting components; 231, 232: Fixing groove, inclined table

[0127] 240: Elastic component surface

[0128] 300: Vehicles

Claims

1. A battery pack configured for electrical connection to a power system, the power system including a mounting portion having a receiving space and at least one first connection terminal located in the receiving space of the mounting portion, the battery pack comprising: Multiple battery cells; A battery pack housing having an internal space to accommodate the plurality of battery cells, and configured to be inserted into the accommodating space of the mounting portion and coupled to the mounting portion by rotating at the position where the battery pack housing is inserted into the accommodating space of the mounting portion; as well as The second connection terminal is electrically connected to the plurality of battery cells and is configured to contact the first connection terminal when the battery pack housing is rotated and connected to the mounting portion. The battery pack housing further includes a support member, which is formed as a portion of the lower surface of the battery pack housing protruding from the outer surface of the battery pack housing in the direction in which the battery pack housing is inserted into the mounting portion. Wherein, the protrusion height of the second connection terminal from the lower surface of the battery pack housing is less than the protrusion length of the support member.

2. The battery pack according to claim 1, wherein, The second connection terminal is positioned at a predetermined distance from the axis of rotation of the battery pack housing.

3. The battery pack according to claim 2, wherein, The second connection terminal includes: An extension, the extension extending in an arc shape; and At least one connecting portion extends from each of the extension portions toward another connecting terminal.

4. The battery pack according to claim 1, wherein, The mounting portion includes an insertion guide groove, which is formed by recessing a portion of the inner surface of the receiving space in an outward direction and extends in a vertical direction. The battery pack housing includes a guide rod formed as a portion of the outer surface of the battery pack housing that protrudes in the outward direction and extends in the vertical direction, and is configured to be inserted into the insertion guide groove.

5. The battery pack according to claim 1, further comprising a separation member configured to restrict rotational movement of the battery pack housing in the mounting portion, or to release the restriction on rotational movement so that the battery pack housing can perform the rotational movement.

6. The battery pack according to claim 5, wherein, The mounting portion includes a fixing groove, which is recessed to a predetermined size, and The separating member includes a fixing protrusion configured to be inserted into the fixing groove.

7. An electric power system configured to supply power to an external device, the electric power system comprising: The mounting section has a receiving space; At least one first connection terminal, the at least one first connection terminal being electrically connected to the external device and located within the mounting portion; as well as The battery pack according to any one of claims 1 to 6.

8. The power system according to claim 7, further comprising an elastic member configured to elastically press the battery pack housing in a direction opposite to the insertion direction when the battery pack is inserted into the mounting portion.

9. A vehicle comprising an electric system according to any one of claims 7 and 8.

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