Battery pack

Abstract

A battery pack includes a frame portion configured to be mounted in a vehicle in which a plurality of battery modules are accommodated. A battery disconnect unit (BDU) is mounted inside the space defined by the frame portion, the battery disconnect unit configured to transmit or block a voltage of the battery module. The power cutoff portion is configured to electrically connect the battery disconnect unit and the battery module, and block an electrical connection of the battery module and the battery disconnect unit in a case of a vehicle collision.

Description

Technical Field

[0001] The present disclosure relates to a battery pack that can be installed in an electric vehicle and operate to automatically shut off power when a collision impact is transmitted. Background Art

[0002] Generally, when a moving vehicle collides with an external object at high speed and the battery pack is physically deformed, a fire may occur due to a short circuit of battery cells within the battery pack.

[0003] In this way, in a case where the battery pack is deformed during a vehicle collision and there is a risk of fire, the battery management system (BMS) must appropriately cut off the contactor. When the BMS fails due to an impact on the battery pack, the cut-off operation cannot be performed.

[0004] In other words, the contactor may remain in a closed state, and internal electrical energy is connected to the outside of the battery, which may cause a risk of electric shock or short circuit, resulting in damage.

[0005] Therefore, when a strong impact is applied to the battery pack, it is necessary to automatically block the power supply of the battery pack to prevent damage caused by electric shock or short circuit. Summary of the Invention

[0006] The present disclosure provides a battery pack that can automatically block the power supply of the battery pack when an external impact is transmitted to the battery pack due to a collision of a vehicle in which the battery pack is installed, etc.

[0007] A battery pack may include: a frame portion configured to be installed in a vehicle; a plurality of battery modules accommodated in the frame portion; a battery disconnect unit (BDU) installed inside a space defined by the frame portion, the battery disconnect unit being configured to transmit or block the voltage of the battery modules; and a power cut-off portion configured to electrically connect the battery disconnect unit and the battery modules and block the electrical connection between the battery modules and the battery disconnect unit in the case of a vehicle collision.

[0008] The battery disconnect unit may include a fuse configured to be electrically connected to the battery modules and block the power supply in an abnormal operating state.

[0009] The power cut-off part may include a guide plate installed inside the space defined by the frame part, a first power terminal installed at a first position relative to the guide plate and electrically connected to the battery module, a second power terminal installed at a second position relative to the guide plate and electrically connected to the battery disconnect unit, a connector part slidably inserted between the first power terminal and the second power terminal and configured to electrically connect the first power terminal and the second power terminal to each other, and a counterweight member movable along the guide plate in the event of a vehicle impact, the counterweight member configured to transfer the impact force of the vehicle to the connector part, thereby blocking the electrical connection between the first power terminal and the second power terminal.

[0010] A guide member configured to guide the counterweight member to move in a direction toward the connector part may be installed on the guide plate.

[0011] The guide member may be a guide tube installed to protrude from the surface of the guide plate, and a movement space for the movement of the counterweight member is formed inside the guide tube.

[0012] The counterweight member may be a spherical movable object that moves inside the guide tube by inertia when a vehicle impact occurs.

[0013] The connector part may include: a connector block inserted between the first power terminal and the second power terminal, the connector block being electrically connected to the first power terminal and the second power terminal; a connecting rod having a first end connected to a side surface of the connector block; and a slider connected to a second end of the connecting rod and configured to move along the guide plate when impacted by the counterweight member.

[0014] The slider may be a block member connected to the connecting rod and slidably installed inside the guide tube.

[0015] The first power terminal is electrically connected to the battery module, and the first power terminal includes a side portion forming a bent portion, and this side portion makes surface contact with a part of the connector block.

[0016] The second power terminal is electrically connected to the battery disconnect unit, and the second power terminal includes a side portion forming a bent portion and making surface contact with a part of the connector block.

[0017] The connector block may be in a polygonal block shape, and the connector block includes a first side making surface contact with the bent portion of the first power terminal and a second side making surface contact with the bent portion of the second power terminal.

[0018] The connector part may include: an insertion block into which a first power terminal and a second power terminal are inserted and which is electrically connected to the first power terminal and the second power terminal; a connecting rod having a first end connected to a side surface of the insertion block; and a slider connected to a second end of the connecting rod and configured to move along a guide plate when impacted by a counterweight member.

[0019] The first power terminal and the second power terminal may be plate-shaped and spaced apart from each other.

[0020] The insertion block may include an insertion portion into which ends of the first power terminal and the second power terminal may be inserted together.

[0021] A cover part configured to cover an upper portion of a position where a power cut-off part is installed here may be installed on the frame part.

[0022] According to an embodiment, when an external impact such as a vehicle collision is transmitted to a battery pack installed in an electric vehicle, an electrical connection between a battery module and a battery disconnect unit (BDU) may be automatically blocked, thereby preventing an accident such as an explosion of the battery pack due to a vehicle accident. Description of the Drawings

[0023] Figure 1 is a perspective view schematically showing a battery pack according to a first embodiment of the present disclosure.

[0024] Figure 2 is a perspective view schematically showing a state in which a power cut-off part is installed in a frame part according to a first embodiment of the present disclosure.

[0025] Figure 3 is a perspective view schematically showing a power cut-off part according to a first embodiment of the present disclosure.

[0026] Figure 4 is a perspective view schematically showing Figure 3 the operating state of the power cut-off part of

[0027] Figure 5 is a perspective view schematically showing a state in which a power cut-off part is installed in a frame part according to a second embodiment of the present disclosure.

[0028] Figure 6 is a perspective view schematically showing a power cut-off part according to a second embodiment of the present disclosure.

[0029] Figure 7 is a perspective view schematically showing Figure 6 the operating state of the power cut-off part of Detailed Description

[0030] Hereinafter, the present disclosure will be described more fully with reference to the accompanying drawings, in which embodiments of the present disclosure are shown. The drawings and the description are to be regarded as illustrative in nature and not restrictive. Throughout the specification, the same reference numerals denote the same elements.

[0031] Figure 1 is a perspective view schematically showing a battery pack according to a first embodiment of the present disclosure. Figure 2 is a perspective view schematically showing a state in which a power cut-off part according to a first embodiment of the present disclosure is mounted in a frame part.

[0032] As Figure 1 and Figure 2 shown, the battery pack 100 according to the first embodiment of the present disclosure may include a plurality of battery modules 12 mounted in a vehicle, a frame part 10 accommodating the plurality of battery modules 12, a battery disconnect unit (BDU) 30 mounted inside the space defined by the frame part 10 and configured to transmit or block the voltage of the battery modules, and a power cut-off part 40 mounted between the battery disconnect unit 30 and the battery modules 12 and configured to block the electrical connection between the battery modules 12 and the battery disconnect unit 30 in the event of a vehicle collision.

[0033] The frame part 10 may include a first side frame 11 configured to support a first side surface of the plurality of battery modules 12, a second side frame 13 configured to support a second side surface of the plurality of battery modules 12, a first end frame 15 whose ends are connected to each of the first ends of the first side frame 11 and the second side frame 13, and a second end frame 17 whose ends are connected to each of the second ends of the first side frame 11 and the second side frame 13.

[0034] The first side frame 11 may be mounted to support a first side of the plurality of battery modules 12. The second side frame 13 may be mounted to support a second side of the plurality of battery modules 12.

[0035] The first end frame 15 may be mounted to connect between the first end of the first side frame 11 and the first end of the second side frame 13. That is, a first end of the first end frame 15 may be connected to the first end of the first side frame 11 by a fastening member, and a second end of the first end frame 15 may be connected to the first end of the second side frame 13 by a fastening member.

[0036] The second end frame 17 may be mounted to connect between the second end of the first side frame 11 and the second end of the second side frame 13. That is, a first end of the second end frame 17 may be connected to the second end of the first side frame 11 by a fastening member, and a second end of the second end frame 17 may be connected to the second end of the second side frame 13 by a fastening member.

[0037] A plurality of battery modules 12 can be electrically connected to each other by a retainer 20 within a space defined by a frame portion 10. That is, a plurality of retainers 20 can be installed to be spaced apart from each other at equal intervals in a first direction (y-axis direction) of the frame portion 10 so that the plurality of battery modules 12 can be electrically connected to each other.

[0038] A BDU 30 can be installed inside a space defined by the frame portion 10. The BDU 30 can be a BDU that is installed when the battery pack 100 is installed in an electric vehicle, and can include a precharge circuit (including a relay and a resistor) and fuses such as a positive electrode main relay and a negative electrode main relay. The fuses can be configured to be electrically connected to the battery module 12 and block the power supply in an abnormal operating state. The precharge circuit can perform the function of an initial charge circuit. After the initial charge is completed, a main relay connected in parallel with the precharge circuit can be closed during normal charging and discharging to form a charge and discharge circuit. The configuration of the battery disconnect unit 30 is a known configuration, and a detailed description of the configuration and operation will be omitted below.

[0039] A power cut-off portion 40 selectively connects the battery disconnect unit 30 and the battery module 12 to each other, and can be installed in a space defined by the frame portion 10. The power cut-off portion 40 can be installed such that selective electrical connection can be achieved between the battery disconnect unit 30 and the battery module 12 in the space defined by the frame portion 10. That is, the power cut-off portion 40 can be installed to be configured to electrically connect the battery disconnect unit 30 and the battery module 12 to each other in an initial state when installed in an electric vehicle, and block the electrical connection between the battery disconnect unit 30 and the battery module 12 when an impact is transmitted to the battery pack 100 due to a vehicle accident or the like.

[0040] Figure 3 is a perspective view schematically showing a power cut-off portion according to a first embodiment of the present disclosure. Figure 4 is schematically showing Figure 3 the operating state of the power cut-off portion.

[0041] Referring to Figure 3 and Figure 4, more specifically, the power cut-off part 40 may include a guide plate 41 installed in the space defined by the frame part 10, a first power terminal 43 installed at a first position relative to the guide plate 41 and electrically connected to the battery module 12, and a second power terminal 45 installed at a second position relative to the guide plate 41 and electrically connected to the battery disconnect unit 30. The power cut-off part 40 may further include a connector part 47 that is slidably inserted between the first power terminal 43 and the second power terminal 45 and configured to electrically connect the first power terminal 43 and the second power terminal 45 to each other. The power cut-off part 40 may further include a weight member 49 configured to move along the guide plate 41 in the event of a vehicle impact, thereby transmitting the force from the impact to the connector part 47.

[0042] The guide plate 41 may be installed on the inner surface of one of the first side frame 11 and the second side frame 13 of the frame part 10. In the present embodiment, the guide plate 41 may be installed on or in the first side frame 11.

[0043] The guide plate 41 may be installed to guide the weight member 49 (described later) to move by inertia by the impact force during a vehicle collision. For this purpose, the guide plate 41 may be installed in an elongated shape along the inner wall surface of the first side frame 11.

[0044] A guide member 42 for the movement of the weight member 49 may be installed on the guide plate 41. The guide member 42 may be installed to protrude on the surface along the length direction of the guide plate 41, and the guide member 42 may be installed as a guide tube in which a movement space for the movement of the weight member 49 is formed inside. Hereinafter, the same reference numerals are assigned to the guide member and the guide tube.

[0045] The guide tube 42 may be installed in a cylindrical tube shape such that the weight member 49 having a substantially spherical shape can be movable therein. The guide tube 42 may be installed to have a first side located on the first side of the guide plate 41 and a second side located close to the battery disconnect unit 30.

[0046] The weight member 49 may be formed as a weight member having a spherical shape such that the movement along the guide tube 42 is easy.

[0047] Therefore, when an impact force is transmitted to the battery pack 100 due to a collision accident while the vehicle is traveling, the weight member 49 can move along the guide tube 42 by inertia and collide with the connector part 47 which is a part of the power cut-off part 40, thereby performing a power cut-off operation.

[0048] The first power terminal 43 and the second power terminal 45 can be mounted on the guide plate 41. The first power terminal 43 and the second power terminal 45 can be mounted on both sides of the guide plate 41 facing each other in the width direction (z-axis direction) at the position where the battery disconnect unit 30 is installed here.

[0049] The first power terminal 43 can be mounted at a first position in the width direction relative to the guide plate 41 and can be electrically connected to the battery module 12. The first power terminal 43 can be electrically connected to the battery module 12, and a first bent portion 43a can be formed on the first side of the first power terminal 43. The first bent portion 43a can be bent on the first side of the first power terminal 43 to protrude from the guide plate 41 in the upward direction.

[0050] In the first bent portion 43a, a part of the first power terminal 43 is bent to be spaced apart from the guide plate 41, which enables the connector block 47a, which is part of the connector portion 47, to move between the guide plate 41 and the first power terminal 43.

[0051] The second power terminal 45 can be mounted at a second position in the width direction (z-axis direction) relative to the guide plate 41 and can be electrically connected to the battery disconnect unit 30. The second power terminal 45 can be mounted at a second position facing the first position where the first power terminal 43 is installed here, and the guide plate 41 is interposed between the first power terminal 43 and the second power terminal 45. The second power terminal 45 can be electrically connected to the battery disconnect unit 30.

[0052] The second power terminal 45 can be mounted at a second position relative to the guide plate 41 to be electrically connected to the battery disconnect unit 30. A second bent portion 45a can be formed on the first side of the second power terminal 45. In the second bent portion 45a, a part of the second power terminal 45 is bent to be spaced apart from the guide plate 41, which enables the connector block 47a, which is part of the connector portion 47, to move between the guide plate 41 and the second power terminal 45.

[0053] That is, the first bent portion 43a and the second bent portion 45a can be positioned adjacent to each other on the upper side of the guide plate 41. In this way, the connector block 47a, which is part of the connector portion 47, can be inserted between the first bent portion 43a and the second bent portion 45a or is movable between the first bent portion 43a and the second bent portion 45a. That is, as described above, the connector portion 47 can be slidably inserted between the first power terminal 43 and the second power terminal 45 and can selectively electrically connect the first power terminal 43 and the second power terminal 45 to each other.

[0054] The connector part 47 can be initially installed to electrically connect the first power terminal 43 and the second power terminal 45. Moreover, the connector part 47 can be installed to block the electrical connection between the first power terminal 43 and the second power terminal 45 when an impact force is transmitted to the battery pack 100 due to an accident such as a vehicle collision.

[0055] More specifically, the connector part 47 can include a connector block 47a inserted and electrically connected between the first power terminal 43 and the second power terminal 45, a connecting rod 47b having a first end connected to a side surface of the connector block 47a, and a slider 47c connected to a second end of the connecting rod 47b and configured to move along the guide plate 41 when impacted by a counterweight member 49. The connector block 47a can be inserted into a space formed by a first bent portion 43a of the first power terminal 43 and a second bent portion 45a of the second power terminal 45, and the connector block 47a can be in contact with each surface of the first bent portion 43a and the second bent portion 45a. The connector block 47a can be in a polygonal block shape. In particular, the connector block 47a can be formed of a metal material and can be in contact with the metal material surfaces of the first bent portion 43a and the second bent portion 45a to electrically connect the first bent portion 43a and the second bent portion 45a to each other.

[0056] The connector block 47a can be installed to be in contact with the surfaces of the first bent portion 43a and the second bent portion 45a in an initial state where no vehicle collision has occurred, and can be separated from the first bent portion 43a and the second bent portion 45a when an impact force from a vehicle collision is transmitted to the battery pack 100. For this purpose, the connecting rod 47b to which the vehicle impact force is transmitted through the slider 47c can be installed on a side surface of the connector block 47a. The connecting rod 47b can have a first end connected to a side surface of the connector block 47a and a second end connected to a side surface of the slider 47c.

[0057] The slider 47c can be installed to be slidable inside a guide tube 42 on the upper side of the guide plate 41 while being connected to the connecting rod 47b. The slider 47c is a slider installed in the guide tube 42 to be movable when receiving an impact of the counterweight member 49, and can be a block member that can move along the guide tube 42 while being in sufficient surface contact with the guide tube 42 when impacted by the counterweight member 49.

[0058] The slider 47c and the connector block 47a can be connected by the connecting rod 47b and can move together along the guide plate 41 by the impact of the counterweight member 49. Therefore, when an impact of the counterweight member 49 occurs, the connector block 47a can move to release the electrical connection between the first power terminal 43 and the second power terminal 45.

[0059] A cover portion 50 covering the upper part of the position where the power cut-off portion 40 is installed here can be installed on the frame portion 10. The cover portion 50 can be installed on the frame portion 10 in a plate shape to cover the upper part of the position where the power cut-off portion 40 is installed here. The cover portion 50 can be installed at the first side position of the frame portion 10 in a rectangular planar shape so that the power cut-off portion 40 is not exposed. A part of the edge of the cover portion 50 can be joined or welded to the side wall surface of the frame portion 10 by a predetermined fastening member while being in surface contact with the side wall surface of the frame portion 10.

[0060] As described above, when an external impact such as a vehicle collision is transmitted to the battery pack 100 in the case of installing the power cut-off portion 40 in an electric vehicle, the battery pack 100 of the first embodiment of the present disclosure can automatically block the electrical connection between the battery module 12 and the battery disconnect unit (BDU) 30, thereby preventing an accident (e.g., explosion) involving the battery pack due to a vehicle accident.

[0061] Figure 5 is a perspective view schematically showing a state in which a power cut-off portion according to a second embodiment of the present disclosure is installed in a frame portion. Figure 6 is a perspective view schematically showing a power cut-off portion according to a second embodiment of the present disclosure. Figure 7 is schematically showing Figure 6 the operating state of the power cut-off portion of. Identical reference numerals in Figures 1 to 4 refer to identical or similar components having the same or similar functions. Hereinafter, detailed descriptions of the identical reference numerals will be omitted.

[0062] As Figures 5 to 7 shown, the power cut-off portion 140 of the battery pack according to the second embodiment of the present disclosure can include a guide plate 41 installed in the space defined by the frame portion 10, a first power terminal 143 installed at a first position relative to the guide plate 41 and electrically connected to the battery module 12, and a second power terminal 145 installed at a second position relative to the guide plate 41 and electrically connected to the battery disconnect unit 30. The power cut-off portion 140 can further include a connector portion 147 that is slidably inserted between the first power terminal 143 and the second power terminal 145 and is configured to electrically connect the first power terminal 143 and the second power terminal 145 to each other. The power cut-off portion 140 can further include a weight member 49 that is configured to move along the guide plate 41 in the case of a vehicle impact and transmit the impact force from a vehicle collision to the connector portion 147.

[0063] Here, the first power terminal 143 and the second power terminal 145 can be installed on both sides of the guide plate 41 and face each other in the width direction (z-axis direction) at the position where the battery disconnect unit 30 is installed here. The first power terminal 143 can be installed at a first position in the width direction relative to the guide plate 41 and can be electrically connected to the battery module 12. The second power terminal 145 can be installed at a second position in the width direction relative to the guide plate 41 and can be electrically connected to the battery disconnect unit 30. The first power terminal 143 and the second power terminal 145 can be installed in a state where they are spaced apart from each other and the guide plate 41 is inserted therebetween. The first power terminal 143 and the second power terminal 145 are installed in a plate shape, the guide plate 41 is inserted therebetween, and the first power terminal 143 and the second power terminal 145 can be installed to have the same height (in the x-axis direction) on the same plane. The first power terminal 143 and the second power terminal 145 can be selectively electrically connected to each other through the connector portion 147.

[0064] As described above, the connector portion 147 can be slidably inserted between the first power terminal 143 and the second power terminal 145, and the connector portion 147 can selectively electrically connect the first power terminal 143 and the second power terminal 145 to each other. More specifically, the connector portion 147 can include an insertion block 147a into which the first power terminal 143 and the second power terminal 145 are inserted, a connecting rod 47b having a first end connected to a side surface of the insertion block 147a, and a slider 47c connected to a second end of the connecting rod 47b. The slider 47c is configured to move along the guide plate 41 when impacted by the counterweight member 49.

[0065] The first power terminal 143 and the second power terminal 145 can be plate-shaped and spaced apart from each other. The insertion block 147a is formed to be bent in a "C" shape, and the first power terminal 143 and the second power terminal 145 can be installed such that the first power terminal 143 and the second power terminal 145 are inserted into the internal space formed in a "C" shape to contact the surface of the insertion block 147a. The insertion block 147a can include an insertion portion into which the ends of the first power terminal 143 and the second power terminal 145 are inserted. Thus, the first power terminal 143 and the second power terminal 145 can be electrically connected to each other. The insertion block 147a can be installed to block the electrical connection between the first power terminal 143 and the second power terminal 145 when an impact force is transmitted to the battery pack 100 due to an accident such as a vehicle collision. The insertion block 147a can be formed of a metal material and can contact the surfaces of the metal materials of both the first power terminal 143 and the second power terminal 145, and the insertion block 147a can electrically connect the first power terminal 143 and the second power terminal 145 to each other. The insertion block 147a can be installed such that in the initial state where no vehicle collision has occurred, the insertion block 147a contacts the surfaces of the first power terminal 143 and the second power terminal 145. When the impact force caused by a vehicle collision is transmitted, the insertion block 147a separates from the first power terminal 143 and the second power terminal 145.

[0066] The connecting rod 47b to which the vehicle impact force is transmitted by the slider 47c can be installed on the side surface of the insertion block 147a. The connecting rod 47b can have a first end connected to the side surface of the insertion block 147a and a second end connected to the side surface of the slider 47c. The slider 47c can be slidably installed inside the guide tube 42 on the upper side of the guide plate 41 and is connected to the connecting rod 47b. The slider 47c is installed inside the guide tube 42 to be movable by the impact of the weight member 49, and the slider 47c can be a block member that can move along the guide tube 42 while being in full surface contact with the guide tube 42 when impacted by the weight member 49. The slider 47c and the insertion block 147a are connected by the connecting rod 47b and can move together along the guide plate 41 by the impact of the weight member 49. Thus, when the impact of the weight member 49 occurs, the insertion block 147a can move to release the electrical connection between the first power terminal 143 and the second power terminal 145.

[0067] Although the present disclosure has been described in connection with what is presently considered to be practical embodiments, it will be understood that the present disclosure is not limited to the disclosed embodiments, but on the contrary, is intended to cover various modifications and equivalent arrangements included within the scope of the appended claims.

[0068] <Description of symbols>

[0069] 10: Frame portion 11: First side frame

[0070] 13: Second side frame 20: Retainer

[0071] 30: Battery disconnect unit 40: Power cut-off portion

[0072] 41: Guide plate 43, 143: First power terminal

[0073] 43a: First bending portion 45, 145: Second power terminal

[0074] 45a: Second bending portion 47, 147: Connector portion

[0075] 47a: Connector block 47b: Connecting rod

[0076] 47c, 147c: Slider 49: Counterweight member

[0077] 50: Cover portion 147a: Insert block

Claims

1. A battery pack comprising: a frame portion configured to be mounted in a vehicle; a plurality of battery modules housed in the frame portion; a battery disconnect unit installed inside a space defined by the frame portion, the battery disconnect unit being configured to transmit or block a voltage of the battery module; as well as A power cutoff portion is configured to electrically connect the battery disconnection unit and the battery module, and to block the electrical connection between the battery module and the battery disconnection unit in the event of a vehicle collision.

2. The battery pack according to claim 1, wherein: The battery disconnect unit includes a fuse configured to be electrically connected to the battery module and to block power supply in an abnormal operation state.

3. The battery pack according to claim 2, wherein: The power cut-off part comprises: a guide plate installed inside the space defined by the frame portion; a first power terminal mounted at a first position relative to the guide plate and electrically connected to the battery module; a second power terminal mounted at a second position relative to the guide plate and electrically connected to the battery disconnect unit; a connector portion slidably inserted between the first power terminal and the second power terminal and configured to electrically connect the first power terminal and the second power terminal to each other; and A weight member is movable along the guide plate in the event of a vehicle impact, the weight member being configured to transmit the impact force of the vehicle to the connector portion, thereby blocking the electrical connection between the first power terminal and the second power terminal. 4 . The battery pack according to claim 3 , further comprising a guide member configured to guide the weight member to move in a direction toward the connector portion, the guide member being mounted on the guide plate.

5. The battery pack according to claim 4, wherein: The guide member is a guide pipe installed to protrude from a surface of the guide plate, and an interior of the guide pipe forms a movement space for movement of the weight member.

6. The battery pack according to claim 5, wherein: The weight member is a spherical movable object that moves within the guide tube by inertia when an impact force of the vehicle occurs.

7. The battery pack according to claim 6, wherein: The connector part comprises: a connector block inserted between the first power terminal and the second power terminal, the connector block being electrically connected to the first power terminal and the second power terminal; a connecting rod having a first end connected to a side surface of the connector block; and A slider is connected to the second end of the connecting rod and is configured to move along the guide plate when impacted by the weight member.

8. The battery pack according to claim 7, wherein: The slider is a block member connected to the connecting rod and slidably installed inside the guide tube.

9. The battery pack according to claim 8, wherein: The first power terminal is electrically connected to the battery module, and includes a side portion forming a bent portion, the side portion making surface contact with a portion of the connector block.

10. The battery pack according to claim 9, wherein: The second power terminal is electrically connected to the battery disconnect unit, and includes a side portion that forms a bent portion and makes surface contact with a portion of the connector block.

11. The battery pack according to claim 10, wherein: The connector block is in a polygonal block shape, and includes a first side that makes surface contact with the bent portion of the first power terminal and a second side that makes surface contact with the bent portion of the second power terminal.

12. The battery pack according to claim 6, wherein: The connector part comprises: an insertion block into which the first power terminal and the second power terminal are inserted and the insertion block is electrically connected to the first power terminal and the second power terminal; a connecting rod having a first end connected to a side surface of the insert block; and A slider is connected to the second end of the connecting rod and is configured to move along the guide plate when impacted by the weight member.

13. The battery pack according to claim 12, wherein: The first power terminal and the second power terminal are plate-shaped and spaced apart from each other.

14. The battery pack according to claim 13, wherein: The insertion block includes an insertion portion into which an end portion of the first power terminal and an end portion of the second power terminal are inserted. 15 . The battery pack according to claim 1 , further comprising a cover portion configured to cover an upper portion of a position where the power cutoff portion is mounted and to be mounted on the frame portion.

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