Battery packs, electronic devices, automobiles, and battery management system modules

Abstract

The present invention provides a battery pack that maintains stable electrical connections and enhances the durability of connected components. To achieve the above objectives, the battery pack according to the present invention includes a cell module having one or more battery cells, a battery management system board configured to control charging and discharging of the cell module, a terminal block mounted on the battery management system board, the terminal block configured to receive connection terminals and having connection holes through which bolts can be inserted, a terminal bolt configured to be inserted into the connection holes, and a battery management system module including a main body portion into which a body of the terminal bolt can be inserted and having a bolt hole with a thread formed on an inner surface thereof, and a press nut including a protrusion protruding outward from an outer periphery of the bolt hole and joined to an outer periphery of the connection hole of the terminal block.

Description

[Technical field]

[0001] The present invention relates to a battery pack, an electronic device, an automobile, and a battery management system module, and more particularly to a battery pack that maintains stable electrical connections and increases the durability of interconnected components, an electronic device and an automobile including the same, and a battery management system module included in such a battery pack. This application claims priority to Korean Patent Application No. 10-2020-0152318 filed on November 13, 2020, the entire contents of which are incorporated herein by reference in their entirety in the specification and drawings. [Background technology]

[0002] Recently, there has been a rapid increase in the demand for portable electronic products such as notebook computers, video cameras, and mobile phones, and the development of electric vehicles, energy storage batteries, robots, satellites, and the like has progressed in earnest. As a result, there has been active effort to develop high-performance secondary batteries that can be repeatedly charged and discharged.

[0003] Secondary batteries currently in commercial use include nickel-cadmium batteries, nickel-metal hydride batteries, nickel-zinc batteries, and lithium secondary batteries. Of these, lithium secondary batteries are attracting attention because they have the advantages of being able to be freely charged and discharged, having a very low self-discharge rate, and having a high energy density, as they hardly experience a memory effect compared to nickel-based secondary batteries.

[0004] Such lithium secondary batteries mainly use lithium-based oxides and carbon materials as positive and negative active materials, respectively, and include an electrode assembly in which a positive electrode plate and a negative electrode plate, to which a positive electrode active material and a negative electrode active material are applied, are disposed with a separator sandwiched therebetween, and an exterior material, i.e., a battery case, that encapsulates the electrode assembly together with an electrolyte.

[0005] Depending on the shape of the exterior material, lithium secondary batteries can be broadly classified into can-type battery cells, in which the electrode assembly is housed in a metal can, and pouch-type battery cells, in which the electrode assembly is housed in a pouch made of an aluminum laminate sheet.

[0006] On the other hand, a battery pack in the prior art could include a large number of such can-type or pouch-type battery cells, and the battery pack had a cell frame that accommodated the plurality of battery cells and a bus bar or metal plate that was configured to electrically connect the plurality of battery cells.

[0007] Meanwhile, the battery pack in the prior art was basically equipped with a battery management system (hereinafter, simply referred to as BMS) module configured to measure changes in current and temperature of multiple battery cells and control charging and discharging of the multiple battery cells in order to grasp the operating state and life of the battery. Also, the BMS module in the prior art was equipped with wires for transmitting the current of the multiple battery cells and a terminal block configured to connect the terminals of such wires.

[0008] In addition, in order to transmit a large current, the battery pack in the prior art needs to use a terminal block made of a brittle material with low electrical resistance or a metal with relatively low mechanical rigidity. However, such a terminal block made of a brittle material or with low mechanical rigidity has the disadvantage that the terminal block is damaged by the tightening torque of the tightening bolt in the process of connecting the wire terminal to the terminal block. Furthermore, when the tightening bolt is tightened with a low torque to prevent the terminal block from being damaged, the tightening bolt may come off the terminal block due to vibration or mechanical shock, resulting in the electrical connection being released. Summary of the Invention [Problem to be solved by the invention]

[0009] Therefore, the present invention has been devised to solve the above-mentioned problems, and has an object to provide a battery pack that maintains stable electrical connections and improves the durability of the connected parts.

[0010] Other objects and advantages of the present invention can be understood from the following description and will become more apparent from the embodiments of the present invention. It should be easily understood that the objects and advantages of the present invention can be realized by the means and combinations thereof disclosed in the claims. [Means for solving the problem]

[0011] In order to achieve the above object, the battery pack according to the present invention comprises: A cell module including one or more battery cells; The battery management system includes a BMS (battery management system) board configured to control charging and discharging of the cell module; a BMS (battery management system) module mounted on the BMS board, configured to receive a connection terminal and having a connecting hole through which a bolt can be inserted, a terminal bolt configured to be inserted into the connecting hole, a main body portion into which the body of the terminal bolt can be inserted and having a bolt hole with a thread formed on its inner surface, and a push-in nut including a protrusion protruding outward from an outer periphery of the bolt hole and joined to the outer periphery of the connecting hole of the terminal block.

[0012] The terminal block is a mounting portion having a plate shape on which the head of the terminal bolt is mounted, the mounting portion having the connecting hole located in a portion thereof; and a mounting portion extending downward from an end of the mounting portion, a portion of which is configured to be fixed to the BMS board.

[0013] Furthermore, the press-in nut has an upper portion facing the lower surface of the mounting portion, At least a portion of the protrusion passes through the connection hole of the mounting portion, The protruding portion may have a protruding end joined to an upper surface of the mounting portion.

[0014] Furthermore, the terminal block may be provided with a recess having a recessed space on the outer periphery of the connecting hole, and the protrusion may be accommodated in the recessed space of the terminal block in a shape bent at least once.

[0015] Furthermore, the terminal bolt and the press nut comprise a first metal; The terminal block may comprise a second metal of a different type than the first metal.

[0016] Furthermore, the press-in nut may be provided with a fixing protrusion on an upper portion thereof, the fixing protrusion being spaced a predetermined distance from the protruding portion and configured so that at least a portion of the fixing protrusion is pressed into the terminal block.

[0017] Furthermore, the terminal block may be provided with a fixing rib that protrudes downward from an outer periphery of the connection hole and is interposed between the protrusion and the fixing protrusion.

[0018] In order to achieve the above object, an electronic device according to the present invention includes one or more battery packs.

[0019] Further, in order to achieve the above object, the vehicle according to the present invention includes one or more battery packs.

[0020] Furthermore, in order to achieve the above object, the BMS (battery management system) module according to the present invention comprises: A BMS (battery management system) board having a printed circuit to control charging and discharging of a plurality of battery cells; A terminal block mounted on the BMS (battery management system) board and having a connection hole drilled so that a bolt can be inserted therein; A terminal bolt configured to be inserted into the connecting hole and fixed thereto; the terminal block includes a main body portion having a bolt hole with a thread formed on its inner surface, into which the body of the terminal bolt can be inserted, and a push-in nut including a protrusion protruding outward from the outer periphery of the bolt hole and joined to the outer periphery of the connecting hole of the terminal block. Effect of the Invention

[0021] According to one aspect of the present invention, the present invention provides a press-in nut including a protrusion joined to the outer periphery of the connection hole of the terminal block, thereby solving the problem of the terminal block being damaged when the tightening torque of the terminal bolt is large in the process of connecting the terminal bolt and the terminal block in the conventional technology. That is, when the terminal bolt is tightened, a force is generated that presses the terminal block downward, but at this time, as the press-in nut is screwed into the terminal bolt, the protrusion presses the terminal block upward, thereby canceling the pressing force of the terminal bolt, and effectively reducing damage to the terminal block caused by the tightening torque of the terminal bolt. [Brief description of the drawings]

[0022] The following drawings attached to this specification are merely illustrative of preferred embodiments of the present invention, and together with the detailed description of the invention described below, serve to make the technical ideas of the present invention easier to understand. Therefore, the present invention should not be interpreted as being limited only to the matters depicted in such drawings. [Figure 1] FIG. 1 is a perspective view illustrating a battery pack according to a first embodiment of the present invention. [Diagram 2] FIG. 1 is an exploded perspective view illustrating the configuration of components of a battery pack according to a first embodiment of the present invention. [Diagram 3] FIG. 1 is an exploded perspective view illustrating the appearance of some components of a battery pack according to a first embodiment of the present invention. [Figure 4]FIG. 2 is a partial vertical sectional view illustrating a state in which some components of a battery pack according to embodiment 1 of the present invention are cut in the vertical direction. [Diagram 5] FIG. 11 is a partial vertical sectional view illustrating a state in which some components of a battery pack according to another embodiment 2 of the present invention are cut in the vertical direction. [Figure 6] FIG. 11 is a partial vertical sectional view illustrating a state in which some components of a battery pack according to another embodiment 3 of the present invention are cut in the vertical direction. [Figure 7] FIG. 11 is a partial vertical sectional view illustrating a state in which some components of a battery pack according to another embodiment 4 of the present invention are cut in the vertical direction. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0023] Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. Prior to this, the terms and words used in this specification and claims should not be interpreted as being limited to their ordinary or dictionary meanings, but should be interpreted as meanings and concepts that are appropriate to the technical idea of ​​the present invention, based on the principle that an inventor can appropriately define the concept of a term in order to best describe his / her invention.

[0024] Therefore, it should be understood that the embodiments described in this specification and the configurations shown in the drawings are merely some of the most preferred embodiments of the present invention and do not represent the technical ideas of the present invention, and therefore there may be various equivalents and modifications that can be substituted for them at the time of filing the application of the present invention.

[0025] Fig. 1 is a perspective view that shows a battery pack according to a first embodiment of the present invention. Fig. 2 is an exploded perspective view that shows components of the battery pack according to the first embodiment of the present invention. Fig. 3 is an exploded perspective view that shows some components of the battery pack according to the first embodiment of the present invention.

[0026] 1 to 3, a battery pack 100 according to a first embodiment of the present invention includes a cell module 110 including one or more battery cells 111, and a BMS (battery management system) module 120. First, the cell module 110 may include a cell frame 113 that houses the battery cells 111. For example, as shown in FIG. 2, the battery pack 100 may include a plurality of battery cells 111 and a cell frame 113 that houses the plurality of battery cells 111 in an aligned state. The cell frame 113 may be composed of a plurality of members configured to enclose each of one end and the other end of the plurality of battery cells 111 in the Y-axis direction.

[0027] The battery cell 111 may be a rechargeable lithium secondary battery. The battery cell 111 may be a can-type battery cell. The battery cell 111 may be provided with a positive terminal (not shown) and a negative terminal (not shown) at one end and the other end, respectively. The battery cell 111 may have a cylindrical can.

[0028] The configuration of such a battery cell 111 is already widely known to those skilled in the art at the time of filing of the present invention, and therefore further detailed description will be omitted in this specification. In addition, although an example of a cylindrical battery cell 111 is shown in Figures 1 and 2, the battery pack 100 according to the present invention is not limited to a specific shape of the battery cell 111. In other words, various battery cells 111 that are publicly known at the time of filing of the present invention can be used in the battery pack 100 according to the present invention.

[0029] Furthermore, the cell module 110 may include a metal plate 140 that electrically connects the plurality of battery cells 111. The metal plate 140 may include a connection terminal 112 for electrically connecting to the BMS board 121.

[0030] Furthermore, the BMS module 120 may include a BMS board 121, a terminal block 122, a terminal bolt 123, and a press nut 124. Specifically, the BMS board 121 may include, for example, a substrate and a printed circuit made of an electrically insulating material. The printed circuit may be configured to be electrically connected to the terminal block 122. The BMS board 121 may be mounted with fuses 128, relays, and the like for electrically controlling the plurality of battery cells 111. However, the BMS board 121 does not necessarily include a printed circuit, and may include only an electrically insulating board configured to mount elements such as fuses and relays on the upper portion.

[0031] Furthermore, the terminal block 122 may be configured to be mounted on the BMS board 121. The terminal block 122 may include, for example, a metal material. The terminal block 122 may include brass. For example, the terminal block 122 may be mounted on the BMS board 121 so as to be electrically connected to the printed circuit. However, the terminal block 122 is not necessarily limited to being mounted on the BMS board 121, and may be configured to be electrically connected to various control elements such as the fuses and relays.

[0032] Furthermore, the terminal block 122 may be configured to allow a connection terminal 132 to be placed thereon. The connection terminal 132 may be provided at an end of a cable 130 having a wire 131 provided to electrically connect the battery cell 111 and the terminal block 122. However, this is not necessarily limited to this form, and as shown in FIG. 2, the fuse 128 or relay may have a separate connection terminal 128a that can be electrically connected to the terminal block 122. The terminal block 122 may be formed with a connection hole H1 so that a bolt can be inserted therein. That is, the connection hole H1 may be a hole drilled in the vertical direction so that the body 123b of the bolt can be inserted therein.

[0033] Furthermore, the terminal bolt 123 may be configured such that a body 123b is inserted into the connection hole H1. A head 123a of the terminal bolt 123 may be mounted on the upper part of the terminal block 122. For example, as shown in FIG. 1, the terminal bolt 123 may be inserted with a connection terminal 132 of the cable 130 interposed between the head 123a of the terminal bolt 123 and the terminal block 122. The terminal bolt 123 may be fixed onto the terminal block 122 by tightening the press nut 124 with the press nut 124 fitted into the body 123b. The terminal bolt 123 may be made of steel or stainless steel.

[0034] FIG. 4 is a partial vertical sectional view illustrating a schematic view of some components of a battery pack according to embodiment 1 of the present invention, cut in the vertical direction.

[0035] 2 and 3, the press-in nut 124 may further include a main body portion 124b and a protruding portion 124a. The main body portion 124b may be formed with a bolt hole H2 into which the body 123b of the terminal bolt 123 can be inserted. The bolt hole H2 may have a thread formed on the inner surface. The press-in nut 124 may be screwed with the terminal bolt 123. The protruding portion 124a may protrude outward from the outer periphery of the bolt hole H2.

[0036] Furthermore, the protrusion 124a may be joined to the outer periphery of the connection hole H1 of the terminal block 122. In this case, a mechanical joining method may be used as the joining method. For example, the protrusion 124a of the press-in nut 124 may be crimped by a press to be joined to the terminal block 122. The press-in nut 124 may be made of steel or stainless steel.

[0037] Furthermore, the battery pack 100 may further include a cable 130 having the connection terminal 132. For example, the cable 130 may have a connection terminal 132 at each of both ends. The connection terminal 132 provided at one end of the cable 130 may be configured to contact the connection terminal 112 of the cell module 110. The connection terminal 132 provided at the other end of the cable 130 may be configured to contact the terminal block 122 mounted on the BMS board 121.

[0038] Therefore, according to the above-mentioned configuration of the present invention, by providing the press-in nut 124 including the protrusion 124a joined to the outer periphery of the connection hole H1 of the terminal block 122, the present invention can solve the inconvenience of the prior art that the terminal block 122 is damaged when the tightening torque of the terminal bolt 123 is large in the process of connecting the terminal bolt 123 and the terminal block 122. That is, when the terminal bolt 123 is tightened, a force is generated that presses the terminal block 122 downward, but at this time, while the press-in nut 124 is screwed into the terminal bolt 123, the protrusion 124a presses the terminal block 122 upward, thereby canceling the pressing force of the terminal bolt 123, and therefore the damage to the terminal block 122 caused by the tightening torque of the terminal bolt 123 can be effectively reduced.

[0039] 2 and 3, the terminal block 122 may include a mounting portion 122a and an attachment portion 122b. The mounting portion 122a may be shaped like a plate so that a head 123a of the terminal bolt 123 is mounted thereon. For example, the terminal block 122 may include the mounting portion 122a in the shape of a square plate at an upper portion. The mounting portion 122a may have a connection hole H1 formed in a portion thereof into which the terminal bolt 123 is inserted.

[0040] Furthermore, the mounting portion 122b may have a shape extending downward from an end of the mounting portion 122a. The mounting portion 122b may be configured such that a portion thereof is fixed to the BMS board 121. For example, as shown in FIG. 2, the mounting portion 122b may be fixed in a state in which an end thereof is inserted into the BMS board 121. That is, the mounting portion 122b may be electrically connected to a printed circuit of the BMS board 121.

[0041] Furthermore, the BMS board 121 may further include a washer 125 configured to be interposed between the terminal block 122 and the head 123a of the terminal bolt 123. For example, the washer 125 may be a spring washer.

[0042] FIG. 5 is a partial vertical sectional view illustrating a schematic view of some components of a battery pack according to another embodiment 2 of the present invention, cut in the vertical direction.

[0043] 5, the battery pack 100 according to another embodiment 2 of the present invention may have a different shape of the protrusion 124a compared to the press nut 124 of FIG 4. Other components may be the same as those of the battery pack 100 according to the first embodiment.

[0044] Specifically, the press-in nut 124 in FIG. 5 may be positioned such that its upper portion faces the lower surface of the mounting portion 122a. The protruding portion 124a may be configured so that at least a portion thereof passes through the connecting hole H1 of the mounting portion 122a. The protruding end of the protruding portion 124a may be joined to the upper surface of the mounting portion 122a. For example, as shown in FIG. 5, the press-in nut 124 may have the protruding portion 124a pass through the connecting hole H1 of the terminal block 122. The penetrating protruding portion 124a may be bent horizontally and then adhered to or joined to the upper surface of the terminal block 122. That is, the press-in nut 124 may be crimped upward toward the mounting portion 122a of the terminal block 122, and then the protruding portion 124a that passes through the connecting hole H1 may be pressed downward again to adhere to or join to the upper surface of the terminal block 122 in a shape in which the end of the protruding portion 124a is bent horizontally. The protrusion 124a may have a circular shape extending in a plane along the outer periphery of the connection hole H1.

[0045] Therefore, according to such a configuration of the present invention, the present invention can maintain a state in which the press nut 124 is stably connected to the terminal block 122 by joining the protruding end of the protruding portion 124a of the press nut 124 to the upper surface of the mounting portion 122a. For example, when a high-temperature heating process is applied in the manufacturing process of the BMS module 120, in order to prevent the degree of thermal expansion between the terminal block 122 and the press nut 124 from being different and the joint state being released, the present invention may have the protruding portion 124a of the press nut 124 in close contact with or connected to both the lower surface and the upper surface of the mounting portion 122a of the terminal block 122. As a result, the present invention can effectively prevent the press nut 124 from being detached from the terminal block 122.

[0046] FIG. 6 is a partial vertical sectional view illustrating a schematic view of some components of a battery pack according to another embodiment 3 of the present invention, cut in the vertical direction.

[0047] Referring to FIG. 6, a battery pack 100 according to another embodiment 3 of the present invention may further include a recess 122c in the terminal block 122 when compared with the BMS module 120 of embodiment 1 of FIG.

[0048] Specifically, the terminal block 122 of the battery pack 100 according to the third embodiment of the present invention may be provided with a recess 122c having a recessed space on the outer periphery of the connection hole H1. The recess 122c may extend in a circular shape on a plane along the outer periphery of the connection hole H1 and may have a linear groove shape recessed toward the inside of the body 123b.

[0049] Further, the press-in nut 124 may have a protruding end of the protruding portion 124a housed in the recessed space of the recess 122c. The protruding portion 124a may have a shape in which the protruding end is bent one or more times. For example, the protruding portion 124a may be bent so that the portion protruding upward through the connecting hole H1 of the terminal block 122 is housed in the recess 122c by burring (deburring). The protruding portion 124a may have a shape extending in a circular shape on a plane along the outer periphery of the connecting hole H1.

[0050] Therefore, according to such a configuration of the present invention, the projection 124a is bent one or more times and accommodated in the recessed space of the recess 122c of the terminal block 122, so that the joint area between the terminal block 122 and the press-in nut 124 can be effectively increased, and therefore the bonding force between the press-in nut 124 and the terminal block 122 can be effectively increased. As a result, the present invention can effectively prevent the press-in nut 124 from coming off the terminal block 122.

[0051] Meanwhile, returning to FIG. 3 and FIG. 4, in the battery pack 100 according to the first embodiment of the present invention, the terminal bolt 123 and the press-in nut 124 may include a first metal. The first metal may be selected by giving priority to properties of ease of processing and excellent durability so as to be advantageous for manufacturing and producing the terminal bolt 123 and the press-in nut 124. The first metal may be, for example, steel or stainless steel. The terminal block 122 may include a second metal different from the first metal. For example, the second metal may be brass selected by giving priority to properties of low electrical resistance for transmitting a large current. That is, the first metal may be a metal having a higher mechanical rigidity (hardness, tensile strength) than the second metal.

[0052] Therefore, according to this configuration of the present invention, even if the terminal block 122 comprises a second metal (brass) which is a relatively brittle material, the terminal bolt 123 and the push-in nut 124 similarly comprise a first metal (steel), so that the force (tightening torque) with which the terminal bolt 123 presses the terminal block 122 downward and the force with which the push-in nut 124 presses the terminal block 122 upward can be canceled out by each other, and therefore the terminal bolt 123 can be fixed to the terminal block 122 with an even higher tightening torque without damaging the terminal block 122.

[0053] FIG. 7 is a partial vertical sectional view illustrating a schematic view of some components of a battery pack according to another embodiment 4 of the present invention, cut in the vertical direction.

[0054] 7, the press nut 124 of the battery pack 100 according to another embodiment 4 of the present invention may further include a fixing protrusion P when compared with the press nut 124 of the embodiment 1. The fixing protrusion P may be located at an upper portion thereof at a predetermined distance from the protrusion 124a. For example, the fixing protrusion P may be located at the outer periphery of the upper surface of the press nut 124.

[0055] Furthermore, the fixing protrusion P may be configured so that at least a portion thereof is pressed into the terminal block 122. For example, as shown in Fig. 7, the fixing protrusion P may be fixed by being partially inserted into the mounting portion 122a of the terminal block 122. The fixing protrusion P may extend cylindrically along the outer periphery of the upper surface of the press-in nut 124 on a plane.

[0056] Therefore, according to the above-described configuration of the present invention, the press-in nut 124 is provided with the fixing protrusion P configured to be at least partially pressed into the terminal block 122, thereby effectively increasing the connecting force between the press-in nut 124 and the terminal block 122. As a result, the present invention can effectively increase the durability of the battery pack 100.

[0057] Meanwhile, an electronic device (not shown) according to an embodiment of the present invention includes one or more of the above-mentioned battery packs 100. The electronic device may further include a device housing (not shown) having a storage space for storing the battery pack 100, and a display unit that allows a user to check the charging state of the battery pack 100. For example, the electronic device may be a portable personal computer.

[0058] Furthermore, the battery pack 100 according to an embodiment of the present invention may be included in an automobile such as an electric automobile or a hybrid automobile. That is, the automobile according to an embodiment of the present invention may include at least one battery pack 100 according to an embodiment of the present invention described above in the vehicle body.

[0059] Furthermore, the BMS module 120 according to an embodiment of the present invention includes a BMS board 121 having a printed circuit to control charging and discharging of a plurality of battery cells 111, a terminal block 122 mounted on the BMS board 121 and having a connection hole H1 drilled to allow a bolt to be inserted therein, a terminal bolt 123 configured to be inserted into the connection hole H1 and fixed therein, a main body 124b into which a body 123b of the terminal bolt 123 can be inserted and having a bolt hole H2 with a thread formed on its inner surface, and a press nut 124 including a protrusion 124a protruding outward from an outer periphery of the bolt hole H2 and joined to an outer periphery of the connection hole H1 of the terminal block 122. The above components of the BMS module 120 are the same as those described in the section of the battery pack 100 above, and therefore will not be described further here.

[0060] On the other hand, although this specification uses terms indicating directions such as up, down, left, right, front, back, etc., it will be apparent to a person skilled in the art of the present invention that these terms are used merely for ease of explanation and may differ depending on the position of the object in question, the position of the observer, etc.

[0061] Hereinafter, the present invention will be described in more detail with reference to embodiments and experimental examples in order to specifically explain the present invention, but the present invention is not limited to these embodiments and experimental examples. The embodiments according to the present invention can be modified into various other forms, and the scope of the present invention should not be interpreted as being limited to the above-described embodiments. The embodiments of the present invention are provided to more completely explain the present invention to those having average knowledge in the art. [Explanation of symbols]

[0062] 100 Battery Packs 110 Cell Module 111 Battery Cell 120 BMS (Battery Management System) Module 121 BMS (Battery Management System) Board 122 Terminal block 123 Terminal bolt 124 Press Nut

Claims

1. A cell module including one or more battery cells; a battery management system module including: a battery management system (BMS) board configured to control charging and discharging of the cell module; a terminal block mounted on the battery management system (BMS) board, the terminal block being configured to receive a connection terminal and having a connection hole through which a bolt can be inserted; a terminal bolt configured to be inserted into the connection hole; and a press-in nut including a body portion into which a body of the terminal bolt can be inserted and a bolt hole having only a thread formed on an inner surface thereof, and a protrusion portion protruding outward from an outer periphery of the bolt hole and joined to an outer periphery of the connection hole of the terminal block; Equipped with The terminal block includes: a mounting portion having a plate shape on which the head of the terminal bolt is mounted, the mounting portion having the connecting hole located in a portion thereof; A mounting portion extending downward from an end of the mounting portion, a portion of which is configured to be fixed to the battery management system (BMS) board; Equipped with The press-in nut has an upper portion facing the lower surface of the mounting portion, At least a portion of the protrusion passes through the connection hole of the mounting portion, The battery pack according to claim 1, wherein a protruding end of the protruding portion is joined to an upper surface of the mounting portion.

2. The terminal block is provided with a recess having a recessed space on an outer periphery of the connection hole, The battery pack according to claim 1 , wherein the protrusion is accommodated in a recessed space of the recess of the terminal block in a shape that is bent at least once.

3. the terminal bolt and the press nut comprise a first metal; 3. The battery pack according to claim 1, wherein the terminal block comprises a second metal of a different type from the first metal.

4. 2. The battery pack according to claim 1, wherein the press-in nut has a fixing protrusion disposed on an upper portion thereof, the fixing protrusion being spaced a predetermined distance from the protrusion and configured to be at least partially pressed into the terminal block.

5. 5. The battery pack according to claim 4, wherein the terminal block is provided with a fixing rib that protrudes downward from an outer periphery of the connection hole and is interposed between the protrusion and the fixing protrusion.

6. An electronic device comprising at least one battery pack according to any one of claims 1 to 5.

7. A motor vehicle comprising at least one battery pack as described in any one of claims 1 to 5.

8. a battery management system (BMS) board having a printed circuit for controlling charging and discharging of a plurality of battery cells; A terminal block mounted on the battery management system (BMS) board and having a connection hole formed therein through which a bolt can be inserted; A terminal bolt configured to be inserted into the connecting hole and fixed thereto; a press-in nut including: a main body portion in which the body of the terminal bolt can be inserted and a bolt hole having only a thread formed on an inner surface thereof; and a protrusion portion protruding outward from an outer periphery of the bolt hole and joined to an outer periphery of the connection hole of the terminal block; Equipped with The terminal block includes: a mounting portion having a plate shape on which the head of the terminal bolt is mounted, the mounting portion having the connecting hole located in a portion thereof; A mounting portion extending downward from an end of the mounting portion, a portion of which is configured to be fixed to the battery management system (BMS) board; Equipped with The press-in nut has an upper portion facing the lower surface of the mounting portion, At least a portion of the protrusion passes through the connection hole of the mounting portion, The battery management system module, wherein the protruding portion has a protruding end joined to an upper surface of the mounting portion.

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