Relay assembly and battery control unit including the same

Abstract

The utility model provides a kind of relay assembly and battery control unit comprising it, according to the relay assembly of an embodiment of the utility model, it can include: relay cover, space is formed inside;BDU combination part, detachably combined to the relay cover;And arc chamber, supported by the BDU combination part, housed in the space of the relay cover, the relay cover includes: cover main body, form the space;Multiple combination arms, from the direction of each side of the cover main body towards the BDU combination part extends;And first combination part, respectively formed in multiple the combination arm, the BDU combination part includes: multiple surfaces, with the thickness of the direction;And second combination part, respectively formed in multiple the surface, combined with the first combination part.

Description

Technical Field

[0001] This utility model relates to a relay assembly and a battery control unit including the thereof, and more specifically, to a relay assembly and a battery control unit including the thereof having a structure that is easy to connect and can stably maintain the connected state. Background Technology

[0002] Electric vehicles (EVs) are one example of next-generation transportation. Electric vehicles have broken away from existing technologies that rely on fossil fuels such as diesel or gasoline, and are powered by electricity. Electric vehicles do not produce additional byproducts during operation, and are therefore considered more environmentally friendly compared to traditional cars.

[0003] One of the core components of an electric vehicle is the battery. The battery provides the necessary power for the vehicle's operation and the functioning of other structures within it. Therefore, to ensure stable operation, the battery must be able to provide the required amount of power at the appropriate points.

[0004] Therefore, batteries are typically installed together with a Battery Management System (BMS) and a Battery Disconnect Unit (BDU). The BMS determines (or judges) whether to supply power to other structures or disconnect power from the battery. Furthermore, the BDU is communicatively connected to the BMS and supplies power to or disconnects power to the other structures based on the BMS's determination.

[0005] Therefore, a relay is provided in the BDU. A relay is a device that operates through electrical control signals to control the opening and closing of other circuits. The relay is electrically connected to the other circuits and to the control power supply that transmits the control signals.

[0006] Relays can be used in any device that needs to allow or cut off power between electrical circuits. As an example, relays can be used in the battery disconnect unit (BDU) of an electric vehicle (EV).

[0007] The BDU is installed between the battery and the inverter. A relay within the BDU is electrically connected to both the battery and the inverter. The relay is configured to enable or disable energizing the connection between the battery and the inverter.

[0008] On the other hand, when relays are installed in electric vehicles, the limited space necessitates miniaturizing both the relay and the BDU (Body Duct Unit) connected to it. This increases the difficulty of physically and electrically connecting the relay and the BDU. Furthermore, with the miniaturization of relays, maintaining their engaged state or energized state with other structures after connection becomes more challenging.

[0009] Therefore, there is a need for a solution that can miniaturize relays while easily integrating them with other structures and stably maintaining the integrated state.

[0010] Korean Patent Publication No. 10-2023-0064207 discloses a battery connection control device and a battery system including the same. Specifically, the device includes a relay unit in multiple battery drain arrays (BDUs) that are linked to multiple battery packs connected in parallel, and is capable of maintaining the connection between the battery packs and the load.

[0011] However, the battery connection control device and battery system including it disclosed in the prior art only add the function of the relay unit. That is, the prior art does not disclose the physical connection structure between the relay unit and the BDU.

[0012] Korean Patent Publication No. 10-2022-0052103 discloses a battery disconnection unit. Specifically, it discloses a battery disconnection unit having a structure that surrounds at least a portion of an electronic relay module and can cool the electronic relay module by heat exchange with it.

[0013] However, the battery disconnection unit disclosed in the existing literature only provides a solution for cooling the electronic relay module. That is, the existing literature also fails to provide a solution for easily connecting the electronic relay module and the battery disconnection unit and stably maintaining their connected state.

[0014] Existing technical documents

[0015] Patent documents

[0016] Korean Patent Publication No. 10-2023-0064207 (May 10, 2023)

[0017] Korean Patent Publication No. 10-2022-0052103 (April 27, 2022) Utility Model Content

[0018] Problems to be solved by utility models

[0019] The purpose of this utility model is to provide a relay assembly with an easily assembled structure and a battery control unit including the same.

[0020] Another objective of this invention is to provide a relay assembly capable of stably maintaining a coupled state and a battery control unit including the same.

[0021] Another objective of this invention is to provide a relay assembly having a structure in which the various components of the relay assembly can be easily combined, and a battery control unit including the relay assembly.

[0022] Another objective of this invention is to provide a relay assembly having a structure capable of stably maintaining the connection state between the various structures of the relay assembly, and a battery control unit including the present invention.

[0023] The problems of this utility model are not limited to those described above. Other problems not mentioned can be clearly understood by those skilled in the art from the following description.

[0024] means for solving problems

[0025] According to one aspect of the present invention, a relay assembly is provided, comprising: a relay cover having a space formed therein; a BDU coupling portion detachably coupled to the relay cover; and an arc chamber supported by the BDU coupling portion and accommodated within the space of the relay cover. The relay cover comprises: a cover body having the space formed therein; a plurality of coupling arms extending from each side of the cover body in one direction toward the BDU coupling portion; and a first coupling portion formed on each of the plurality of coupling arms. The BDU coupling portion comprises: a plurality of surfaces having a thickness in the one direction; and a second coupling portion formed on each of the plurality of surfaces and coupled to the first coupling portion.

[0026] At this time, a relay assembly can be provided, the relay cover including: a connecting opening formed through the interior of the connecting arm in a direction; and a connecting body located at the connecting opening and connected to one side of the inner periphery of the connecting arm surrounding the connecting opening, the first connecting portion being formed as a connecting protrusion protruding from the face of the connecting body toward one side of the other connecting arm, and the second connecting portion being formed through a plurality of faces formed in the BDU connecting portion and used to receive the cover connecting groove of the first connecting portion.

[0027] Alternatively, a relay assembly can be provided in which the connecting arm is formed such that its cross-sectional area decreases in the direction opposite to that of the cover body.

[0028] At this point, a relay assembly can be provided, wherein the connecting body is formed such that its cross-sectional area decreases in the direction toward the cover body.

[0029] Alternatively, a relay assembly may be provided in which the connecting protrusion is formed such that the cross-sectional area of ​​the side facing the cover body is larger than the cross-sectional area of ​​the other side opposite to the cover body; the surface connecting the end of the connecting protrusion on one side and the end of the connecting protrusion on the other side is formed to be inclined in the direction toward the BDU connecting portion in the opposite manner to the other connecting arm.

[0030] In addition, according to one aspect of the present invention, a battery control unit can be provided, comprising: a cover having a space formed therein; a BDU assembly housed in the cover and electrically connected to an external battery cell; and a relay assembly coupled to and electrically connected to the BDU assembly, housed in the space of the cover, wherein the BDU assembly includes a relay coupling portion coupled to and energized with the relay assembly, configured to support the relay assembly in a horizontal direction, and the relay assembly includes a BDU coupling portion detachably coupled to the relay coupling portion.

[0031] At this time, a battery control unit (BDU) can be provided, wherein the relay coupling includes: a plurality of relay support members extending along the height direction, having a length in one direction and a thickness in another direction, and being spaced apart from each other along the other direction; and a relay coupling groove formed recessed inside the relay support members, wherein the BDU coupling includes: a plurality of surfaces inserted into the relay coupling groove, and each side of the plurality of surfaces in the other direction is supported by the relay support members.

[0032] Alternatively, a battery control unit may be provided in which the outer side of the relay support member in the other direction is partially open to allow the relay coupling groove to communicate with the outside. The relay coupling portion includes: a relay coupling member that engages with the outer side of the relay support member in the other direction and engages with the surface of the BDU coupling portion received in the relay coupling groove.

[0033] At this time, a battery control unit can be provided, wherein the relay coupling member includes: a relay coupling body, which is coupled to the relay support member and located on the outside of the relay support member in the other direction; and a relay coupling protrusion, which protrudes from the surface of the relay coupling body toward the surface of the relay coupling groove, wherein the BDU coupling portion includes: a BDU coupling groove, which is formed through the interior of the surface along the thickness direction of the surface, and the relay coupling protrusion is coupled to the BDU coupling groove.

[0034] Alternatively, a battery control unit may be provided, wherein the BDU coupling portion includes: a BDU coupling opening formed in a recess at one corner of the surface and arranged spaced apart from the BDU coupling groove along the height direction of the relay support member; and a support surface located between the BDU coupling groove and the BDU coupling opening along the height direction of the relay support member.

[0035] At this time, a battery control unit can be provided, wherein the BDU coupling portion is configured such that the relay coupling protrusion passes sequentially through the BDU coupling opening and the support surface, is received in the BDU coupling groove and engages with the relay coupling portion.

[0036] Alternatively, a battery control unit can be provided in which the relay engagement protrusion is hook-fitted with the BDU engagement groove.

[0037] At this time, a battery control unit can be provided, wherein the relay coupling groove includes a portion extending along one direction and another portion extending along another direction, and the BDU coupling portion includes a side received in the portion of the relay coupling groove and another side continuously formed with the side and received in the other portion of the relay coupling groove.

[0038] Alternatively, a battery control unit can be provided in which the BDU junction is formed as a yoke, the BDU junction supporting a structural element electrically connected to the outside of the relay assembly and another structural element magnetized by the one structural element, and directly coupled to the relay junction.

[0039] Utility Model Effect

[0040] Based on the above structure, the relay assembly and the battery control unit including it in this embodiment of the present invention can be more easily combined.

[0041] Furthermore, according to the above structure, the relay assembly and the battery control unit including it in this embodiment of the present invention can stably maintain a coupled state.

[0042] Furthermore, based on the above structure, the relay assembly and battery control unit including it in the present invention can easily combine the various structures of the relay assembly.

[0043] Furthermore, according to the above structure, the relay assembly and the battery control unit including it in this embodiment of the present invention can stably maintain the connection state between the various structures of the relay assembly.

[0044] The effects of this utility model are not limited to those described above, but should be understood to include all effects that can be derived from the utility model structure described in the detailed description of this utility model or the appended claims. Attached Figure Description

[0045] Figure 1 This is a perspective view showing a battery control unit according to an embodiment of the present invention.

[0046] Figure 2 It is shown Figure 1 An exploded perspective view of the structure of the battery control unit.

[0047] Figure 3 It is shown Figure 1 Partial open perspective view of the battery control unit.

[0048] Figure 4 It shows the setting Figure 1 A three-dimensional view of the battery control unit (BDU) assembly.

[0049] Figure 5 It is shown Figure 4 A three-dimensional view of the BDU assembly.

[0050] Figure 6 It is shown Figure 5 A magnified 3D view of region A of the BDU assembly.

[0051] Figure 7 It is shown Figure 4 A top view of the BDU assembly.

[0052] Figure 8 It is shown Figure 7 An enlarged top view of part B of the BDU assembly.

[0053] Figure 9 It is shown Figure 4 The front view of the BDU assembly.

[0054] Figure 10 It is shown Figure 9 Enlarged front view of part C of the BDU assembly.

[0055] Figure 11 It is shown Figure 7 A cross-sectional view of the BDU assembly.

[0056] Figure 12 It shows the setting Figure 1 A perspective view of the relay assembly of the battery control unit.

[0057] Figure 13 It is shown Figure 12An exploded perspective view of the structure of a relay assembly.

[0058] Figure 14 It shows the setting Figure 12 A perspective view of the relay cover of the relay assembly.

[0059] Figure 15 It is shown Figure 14 Side view of the relay cover.

[0060] Figure 16 It is shown Figure 14 CC section view of the relay cover.

[0061] Figure 17 It is shown Figure 15 DD sectional view of the relay cover.

[0062] Figures 18-19 It shows the setting Figure 12 Side view of the BDU junction of the relay assembly.

[0063] Figure 20 It is shown Figure 12 BB cross-sectional view of the relay assembly.

[0064] Figures 21-22 This is a usage state diagram illustrating the process of assembling the battery control unit according to an embodiment of the present invention.

[0065] Figure 23 It is shown Figure 1 A top view of the battery control unit.

[0066] Figure 24 It is shown in Figure 23 A magnified top view of part D of the battery control unit combined with the relay assembly.

[0067] Figure 25 It is shown Figure 22 A cross-sectional view of the battery control unit and relay assembly in their combined state.

[0068] Figure 26 It is shown Figure 25 An enlarged cross-sectional view of part E of the battery control unit and relay assembly in their combined state.

[0069] Explanation of reference numerals in the attached figures

[0070] 1: Battery control unit 10: Cover

[0071] 20: BDU assembly 21: BDU housing

[0072] 22: BDU component; 30: Relay assembly

[0073] 30a: First relay assembly; 30b: Second relay assembly

[0074] 40: Fastening component 100: Relay connection part

[0075] 100a: First relay connection part; 100b: Second relay connection part

[0076] 110: Relay receiving space; 120: Relay receiving slot

[0077] 130: Relay support component; 130a: First relay support component

[0078] 130b: Second relay support member; 131: Support protrusion

[0079] 140: Connector 150: Relay Connector Slot

[0080] 160: Relay connection component; 161: Relay connection body

[0081] 162: Pressurized inclined section; 163: Relay connection protrusion.

[0082] 170: Busbar support protrusion; 200: Sensor terminal section

[0083] 200a: First sensor terminal section; 200b: Second sensor terminal section

[0084] 300: Relay cover; 310: Cover body

[0085] 311: Cover space; 320: Insulating board

[0086] 330: Connecting arm; 330a: First connecting arm

[0087] 330b: Second coupling arm; 340: Coupling opening.

[0088] 350: Main body; 360: First joint.

[0089] 400: Arc chamber; 410: Relay terminal

[0090] 411: First relay terminal; 412: Second relay terminal

[0091] 500: BDU joint; 510: BDU joint body

[0092] 511: First page 512: Second page

[0093] 513: Third side; 520: Second joint.

[0094] 530: BDU mating groove; 540: BDU mating opening.

[0095] 550: Support surface; 600: Control module Detailed Implementation

[0096] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily implement the present invention. The present invention can be implemented in many different forms and is not limited to the embodiments described herein. For clarity of illustration, parts unrelated to the description have been omitted from the drawings, and the same reference numerals are used throughout the specification for the same or similar constituent elements.

[0097] The words and terms used in this specification and the appended claims should not be limited to their conventional or dictionary meanings, but should be interpreted as meanings and concepts consistent with the technical idea of ​​this utility model, in accordance with the principle that the inventor is able to define terms and concepts in a way that best describes the utility model.

[0098] Therefore, the embodiments described in this specification and the structures shown in the accompanying drawings are one of the preferred embodiments of this utility model, and do not represent all the technical ideas of this utility model. Therefore, when applying for this utility model, there may be many equivalents and modifications.

[0099] In the following description, in order to clearly illustrate the features of this utility model, descriptions of some constituent elements may be omitted.

[0100] As used in the following description, the term "connection" means that one or more components are fluidly connected to each other. In one embodiment, a connection can be formed by components such as pipes, conduits, and piping. In the following description, a connection can have the same meaning as "fluidly connected" to one or more components.

[0101] As used in the following description, the term "energized" means that one or more components are connected in a manner that enables them to transmit current or electrical signals to each other. In one embodiment, energization can be achieved through wired means such as wired components or wireless means such as Bluetooth, Wi-Fi, or Radio Frequency Identification (RFID). In one embodiment, energization can include the meaning of "communication".

[0102] As used in the following description, the term "fluid" refers to a substance that flows under the influence of external forces and whose shape or volume can be deformed in any form. In one embodiment, the fluid may be a liquid such as water or a gas such as air.

[0103] The terms “upper side”, “lower side”, “left side”, “right side”, “front side” and “rear side” used in the following description should be understood with reference to the coordinate system shown in the attached figures.

[0104] Reference Figures 1-3 The following diagram illustrates a battery control unit 1 according to an embodiment of the present invention. The battery control unit 1 according to the illustrated embodiment can be installed in an electric vehicle, etc. In this embodiment, the battery control unit 1 can be electrically connected to a battery cell (not shown) and is used to control the battery cell (not shown).

[0105] Alternatively, the battery control unit 1 may be disposed in any device including a battery cell (not shown) and used to control the battery cell (not shown).

[0106] Furthermore, the battery control unit 1 according to the present invention includes a structure for controlling a battery cell (not shown) (i.e., the BDU assembly 20 described later) and other structures configured to be combined with the structure and for allowing or cutting off the power supply between the battery cell (not shown) and other structures (i.e., the relay assembly 30 described later).

[0107] At this point, the individual structures within the other structures can easily combine and stably maintain their combined state. Furthermore, the other structures can also easily combine with the structure itself and stably maintain their combined state.

[0108] Therefore, the battery control unit 1 according to the present invention can easily perform the combination of the various structures and can stably maintain their combined state.

[0109] In the illustrated embodiment, the battery control unit 1 includes: a cover 10, a BDU assembly 20, a relay assembly 30, and a fastening member 40.

[0110] The cover 10 forms the outer shape of the battery control unit 1. The interior of the cover 10 has a space for accommodating other structures of the battery control unit 1. Furthermore, a portion of the cover 10 constitutes the other structures that can support the battery control unit 1.

[0111] The cover 10 can be made of an electrically insulating material. This is to prevent other structures of the battery control unit 1 housed in the cover 10 from being arbitrarily connected to the outside. The cover 10 can also be made of a lightweight and highly rigid material. This is to prevent damage to other structures of the battery control unit 1 housed inside the cover 10 when external force is applied.

[0112] In one embodiment, the cover 10 may be made of a synthetic resin material such as reinforced plastic.

[0113] The BDU assembly 20 is electrically connected to both the battery cell (not shown) and the BMS PCB assembly (not shown). The BDU assembly 20 can control the battery cell (not shown) in accordance with the control information calculated by the BMS PCB assembly (not shown). Therefore, the BDU assembly 20 can be configured as a battery disconnect unit.

[0114] The BDU assembly 20 is combined with the cover 10. Specifically, a portion of the structure of the BDU assembly 20 can be accommodated in the space formed inside the cover 10. Furthermore, other structures of the BDU assembly 20 can be combined with the cover 10.

[0115] The BDU assembly 20 is combined with the BMS PCB assembly (not shown). The BDU assembly 20 and the BMS PCB assembly (not shown) are electrically connected to receive calculated control information.

[0116] BDU assembly 20 is combined with relay assembly 30. BDU assembly 20 can be combined with and electrically connected to relay assembly 30. In one embodiment, BDU assembly 20 can be detachably combined with relay assembly 30.

[0117] The relay assembly 30 is combined with the BDU assembly 20 and substantially performs the function of allowing or cutting off the energization between the battery cell (not shown) and other structures. The relay assembly 30 can be accommodated in the cover 10 when combined with the BDU assembly 20.

[0118] The relay assembly 30 is combined with the fastening member 40. After the relay assembly 30 is combined with the BDU assembly 20, it can be fixed to the BDU assembly 20 by the fastening member 40. For this purpose, the fastening member 40 can be configured as a screw member or any shape that can fix the relay terminal 410 and busbar (not shown) of the relay assembly 30 to the BDU assembly 20.

[0119] The BDU assembly 20 will be described first, followed by the relay assembly 30.

[0120] exist Figures 4-11 In the illustrated embodiment, the BDU assembly 20 includes: a BDU housing 21, a BDU component 22, and a relay junction 100.

[0121] The BDU housing 21 forms the outer shape of the BDU assembly 20. The BDU housing 21 is combined with and supports the BDU assembly 22. In the illustrated embodiment, the BDU housing 21 supports the BDU assembly 22 from below.

[0122] The BDU housing 21 may be provided with a structure that is electrically connected to the BDU assembly 22. This structure can be electrically connected to the BMS PCB assembly (not shown). Therefore, when the BDU assembly 22 is combined with the BDU housing 21, the BDU assembly 22 can be electrically connected to the BMS PCB assembly (not shown). Furthermore, the relay assembly 30 combined with the BDU housing 21 can be electrically connected to the BDU assembly 22.

[0123] The BDU housing 21 is coupled to the cover 10. Each horizontal side of the BDU housing 21 (front, rear, left, and right sides in the illustrated embodiment) can be coupled to the cover 10. In one embodiment, the BDU housing 21 can be snap-fitted to the cover 10.

[0124] The BDU housing 21 can have a shape corresponding to the shape of the cover 10 and the BMS PCB assembly (not shown). In the illustrated embodiment, the BDU housing 21 is a three-dimensional shape with a rectangular cross-section and a height in the vertical direction.

[0125] The BDU housing 21 may be made of an electrically insulating material. This is to prevent accidental energization between the BDU assembly 22 and the BMS PCB assembly (not shown). Therefore, it is understood that the BDU assembly 22 and the BMS PCB assembly (not shown) can only be electrically connected through the structure of the BDU housing 21.

[0126] BDU component 22 essentially performs the function of BDU assembly 20, namely, controlling the battery cell (not shown). BDU component 22 can be electrically connected to the battery cell (not shown) and controls the battery cell (not shown) accordingly with calculated control information.

[0127] BDU component 22 is combined with BDU housing 21. BDU component 22 can receive and calculate control information through the other structures of BDU housing 21 and BMS PCB assembly (not shown) that are electrically connected.

[0128] The BDU assembly 22 is housed within the space formed inside the cover 10. The BDU assembly 22 is concealed by the cover 10 and is not arbitrarily exposed to the outside. The BDU assembly 22 is electrically connected to the relay assembly 30.

[0129] The relay coupling portion 100 is a structure for engaging the BDU assembly 20 with the relay assembly 30. The relay coupling portion 100 includes a structure for supporting the relay assembly 30.

[0130] The relay coupling 100 is coupled to the BDU housing 21. The relay coupling 100 is located on the side of the BDU housing 21 facing the cover 10 (the upper side in the illustrated embodiment).

[0131] Multiple relay coupling portions 100 can be formed. Multiple relay coupling portions 100 can be coupled to and support multiple relay assemblies 30 respectively.

[0132] In the illustrated embodiment, a pair of relay coupling portions 100 are provided, including a first relay coupling portion 100a arranged to the rear and a second relay coupling portion 100b arranged to the right. The first relay coupling portion 100a engages with and supports the first relay assembly 30a. The second relay coupling portion 100b engages with and supports the second relay assembly 30b.

[0133] The first relay connection 100a and the second relay connection 100b differ in direction, but their structure and function are the same. Therefore, in the following description of the common structure, the first relay connection 100a and the second relay connection 100b will be collectively referred to as the relay connection 100.

[0134] In the illustrated embodiment, the relay coupling portion 100 includes: a relay receiving space 110, a relay receiving groove 120, a relay support member 130, a coupling connector 140, a relay coupling groove 150, a relay coupling member 160, and a busbar support protrusion 170.

[0135] The relay receiving space 110 accommodates the BDU joint 500 of the relay assembly 30. The relay receiving space 110 is defined by being surrounded by a pair of relay support members 130. Each side of the relay receiving space 110 in the width direction is surrounded by a pair of relay support members 130.

[0136] Specifically, the left and right sides of the relay receiving space 110 of the first relay joint 100a and the front and rear sides of the relay receiving space 110 of the second relay joint 100b are surrounded by a pair of relay support members 130.

[0137] The relay receiving space 110 is open on each side along its length. Through one side along the length of the relay receiving space 110, the sensor terminal portion 200 and the relay cover 300 of the relay assembly 30 can be exposed to the outside of the relay receiving space 110.

[0138] Furthermore, one side of the relay receiving space 110 in the height direction (the upper side in the illustrated embodiment) is open. The relay assembly 30 can be led out or introduced into the relay receiving space 110 through said one side (i.e., the upper side). The other side of the relay receiving space 110 in the height direction (the lower side in the illustrated embodiment) is surrounded by the upper side of the BDU housing 21.

[0139] The relay receiving space 110 can be a shape corresponding to the shape of the BDU joint 500. In the illustrated embodiment, the relay receiving space 110 is formed as a three-dimensional shape with a rectangular cross-section and a height in the vertical direction.

[0140] The relay receiving space 110 is connected to the relay engagement groove 150 formed on the relay support member 130. A part of the structure of the relay assembly 30 can be accommodated in both the relay receiving space 110 and the relay engagement groove 150.

[0141] The relay receiving groove 120 accommodates the control module 600 of the relay assembly 30. The relay receiving groove 120 is recessed on one side (the upper side in the illustrated embodiment) of the BDU housing 21 in the height direction.

[0142] The relay receiving slot 120 is arranged adjacent to the relay receiving space 110. With a part of the relay assembly 30 being received in the relay receiving space 110, the other part of the relay assembly 30 can be received in the relay receiving slot 120.

[0143] The relay receiving slot 120 can be a shape corresponding to the shape of the control module 600. In the illustrated embodiment, the relay receiving slot 120 is formed as a three-dimensional shape with a rectangular cross-section and a height in the vertical direction.

[0144] The relay receiving slot 120 is internally equipped with a coupling connector 140. The control module 600, which is housed in the relay receiving slot 120, can be coupled to and energized by the coupling connector 140.

[0145] The relay support member 130 partially surrounds the relay receiving space 110. The relay support member 130 supports the relay assembly 30 received in the relay receiving space 110 in the width direction.

[0146] Multiple relay support members 130 may be provided. The multiple relay support members 130 are arranged spaced apart from each other along the width direction of the relay receiving space 110, and can be arranged facing each other across the relay receiving space 110.

[0147] In the illustrated embodiment, the relay support member 130 includes: a first relay support member 130a located on one side of the relay receiving space 110 in the width direction; and a second relay support member 130b located on the other side of the relay receiving space 110 in the width direction.

[0148] The first relay support member 130a and the second relay support member 130b differ in position, but have the same structure and function. Therefore, in the following description of the common structure, the first relay support member 130a and the second relay support member 130b will be collectively referred to as relay support member 130.

[0149] The relay support member 130 is coupled to the BDU housing 21. Specifically, the relay support member 130 extends upward from one side (i.e., the upper side) of the BDU housing 21 in the height direction. The relay support member 130 supports the BDU joint portion 500 of the relay assembly 30 in the width direction.

[0150] A relay engagement groove 150 is formed inside the relay support member 130. The relay support member 130 supports a portion of the structure of the relay assembly 30 inserted into the relay engagement groove 150 on each side. In the illustrated embodiment, the relay support member 130 can support the BDU engagement portion 500 inserted into the relay engagement groove 150 on the left, right, and rear sides, respectively.

[0151] Therefore, it can be understood that when the relay support member 130 is viewed from the vertical direction, it has the shape of a fence with the relay engagement groove 150 formed inside.

[0152] The relay support member 130 is coupled to the relay coupling member 160. The relay support member 130 can support the relay coupling member 160 so that the relay coupling member 160 can move or deform. In the illustrated embodiment, the outer side of the relay support member 130 in the width direction (i.e., the left side of the first relay support member 130a or the right side of the second relay support member 130b) is coupled to the relay coupling member 160.

[0153] The relay support member 130 can support the relay assembly 30 in the width direction, and has a relay engagement groove 150 formed therein. It can also be any shape that supports the relay engagement member 160, allowing the relay engagement member 160 to move or deform. In the illustrated embodiment, the relay support member 130 is a three-dimensional shape with a length in the front-to-back direction greater than its width in the left-to-right direction, and a height in the vertical direction.

[0154] exist Figure 11In the embodiment best illustrated, the relay support member 130 includes a support protrusion 131.

[0155] The support protrusion 131 is configured to limit the distance by which the relay assembly 30 is inserted into the relay engagement slot 150. The support protrusion 131 supports the BDU engagement body 510 inserted into the relay engagement slot 150.

[0156] The relay support protrusion 131 is located in the relay engagement groove 150. The relay support protrusion 131 constitutes the relay support member 130 and extends between a pair of members spaced apart from each other in the width direction (left-right direction in the illustrated embodiment).

[0157] The relay support protrusion 131 may extend along the length of the pair of components (in the illustrated embodiment, the front-to-back direction). The relay support protrusion 131 may protrude along the direction in which the pair of components are spaced apart from each other (i.e., the left-to-right direction). The relay support protrusion 131 is positioned biased towards the underside of the pair of components.

[0158] Multiple relay support protrusions 131 may be formed. In the illustrated embodiment, a pair of relay support protrusions 131 are provided, and are respectively formed on the first relay support member 130a on the left and the second relay support member 130b on the right.

[0159] Connector 140 is the part that allows the BDU assembly 20 and the relay assembly 30 to be electrically connected. Connector 140 is connected to and energized with the control module 600 of the relay assembly 30.

[0160] The connector 140 is located in the relay receiving slot 120. In the illustrated embodiment, the connector 140 is arranged adjacent to the center of the electrical receiving slot 120. The position of the connector 140 can be changed accordingly to the position of the control module 600.

[0161] The coupling connector 140 can be of any shape capable of electrically engaging with the control module 600. In the illustrated embodiment, the coupling connector 140 is configured as a female connector with a rectangular cross-section and capable of terminal insertion.

[0162] The relay engagement slot 150 accommodates a portion of the structure of the relay assembly 30. The relay engagement slot 150 is formed inside the relay support member 130. The relay engagement slot 150 can communicate with the outside and accommodate the BDU engagement body 510 of the relay assembly 30.

[0163] The relay connection slot 150 can be of any shape capable of accommodating the BDU connection body 510. Furthermore, the relay connection slot 150 can be divided into multiple portions to accommodate the BDU connection body 510. One side (the upper side in the illustrated embodiment) of each of the multiple portions is open in the height direction, and its lower side is closed by the BDU housing 21 or the support protrusion 131.

[0164] In the illustrated embodiment, the relay engagement slot 150 includes a portion having a length in the front-to-back direction and a height in the vertical direction, and another portion continuously formed with the rear end of the portion and extending in the left-to-right direction and having a height in the vertical direction.

[0165] In the embodiment, the outer side of the portion in the width direction (i.e., the left side of the first relay support member 130a and the right side of the second relay support member 130b) communicates with the outside. The relay coupling member 160 can move or deform on the outer side of the portion.

[0166] The first surface 511 and the second surface 512, which are accommodated in the portion of the relay coupling groove 150, are supported on their respective sides (i.e., the left and right sides) in the thickness direction by the relay support member 130. Furthermore, the first surface 511 and the second surface 512 are supported by the support protrusion 131 when they are accommodated in the portion.

[0167] The third surface 513, which is housed in the other part of the relay coupling groove 150, is surrounded in the thickness direction by the relay support member 130 on each side (i.e., the upper and lower sides).

[0168] The relay coupling member 160 is movably located in the relay coupling slot 150.

[0169] The relay coupling member 160 engages with the relay assembly 30 inserted into the relay coupling slot 150. The relay coupling member 160 is sequentially inserted into the BDU coupling opening 540 and the BDU coupling slot 530. The relay assembly 30 can be held engaged with the relay coupling portion 100 by means of the relay coupling member 160.

[0170] The relay coupling member 160 is coupled to the relay support member 130. The relay coupling member 160 is disposed facing the ground with respect to the relay housing space 110, through a portion of the structure of the relay support member 130 (i.e., a portion adjacent to the relay housing space 110).

[0171] At this time, the relay coupling member 160 can be coupled to the relay support member 130 in a movable or deformable manner. In the illustrated embodiment, one side of the relay coupling member 160 in the height direction (the lower part in the illustrated embodiment) is coupled to the relay support member 130, and the other side of the relay coupling member 160 in the height direction (the upper part in the illustrated embodiment) is formed as a free end.

[0172] At this time, the corners (front and rear corners in the illustrated embodiment) of the relay connecting member 160 in the width direction are separated from the relay support member 130.

[0173] Therefore, it can be understood that the relay coupling member 160 can move or deform in either the direction toward the relay coupling groove 150 or the direction opposite to the relay coupling groove 150, with the side (i.e., the lower side) in the height direction as the axis.

[0174] The relay coupling member 160 engages with the BDU coupling portion 500 of the relay assembly 30. Specifically, when the BDU coupling portion 500 is inserted into the relay coupling slot 150, the relay coupling member 160 is first inserted into the BDU coupling opening 540. When insertion into the BDU coupling portion 500 begins, the relay coupling member 160 is drawn out from the BDU coupling opening 540, passes through the support surface 550, and is inserted into the BDU coupling slot 530.

[0175] Through the above process, the relay assembly 30 can be combined with the BDU assembly 20.

[0176] The relay coupling member 160 can be configured in any shape to easily engage with the relay assembly 30 and stably maintain the engaged state. In one embodiment, the relay coupling member 160 can engage with the relay assembly 30 in a hook fit or snap fit manner.

[0177] Therefore, in the illustrated embodiment, the relay coupling member 160 includes: a relay coupling body 161, a pressure tilting portion 162, and a relay coupling protrusion 163.

[0178] The relay coupling body 161 constitutes the main body of the relay coupling member 160. The relay coupling body 161 is the part where the relay coupling member 160 and the relay support member 130 are coupled. Furthermore, other structures of the relay coupling member 160 (i.e., the pressure tilting part 162 and the relay coupling protrusion 163) are coupled to the relay coupling body 161.

[0179] The relay coupling body 161 can be shaped to correspond to the shape of the relay coupling member 160. In the illustrated embodiment, the relay coupling body 161 is a polygonal prism shape with a polygonal cross-section and a height in the vertical direction.

[0180] At this time, as described above, one side (i.e. the lower side) of the relay coupling body 161 in the height direction is coupled to the relay support member 130, while the other side in the height direction and the other sides can be formed separately from the relay support member 130.

[0181] Therefore, the relay coupling body 161 can move or deform about one side (i.e., the lower side) as an axis, in the direction toward the relay coupling groove 150 and in the opposite direction to the relay coupling groove 150.

[0182] The relay is combined with the main body 161 and the pressure tilting part 162.

[0183] The pressure-adjusting portion 162 is pressurized by the support surface 550 inserted into the relay engagement groove 150. The pressure-adjusting portion 162, the relay engagement body 161 engaged therewith, and the relay engagement protrusion 163 can move or deform in the opposite direction (i.e., outward) from the relay engagement groove 150 under the action of the pressure.

[0184] When the contact between the pressure tilting part 162 and the support surface 550 is released, the pressure tilting part 162, the relay engaging body 161 and the relay engaging protrusion 163 connected thereto can move or deform in the direction toward the relay engaging groove 150 (i.e., the inside).

[0185] The pressure-adjusting portion 162 is continuously formed with the relay coupling body 161. The pressure-adjusting portion 162 is formed on the side (i.e., the inner surface) of the relay coupling body 161 facing the relay coupling groove 150. The pressure-adjusting portion 162 protrudes in the direction facing the relay coupling groove 150 (i.e., the inner side).

[0186] At this time, the pressure-adjusting portion 162 can be formed to have different cross-sectional areas along its height direction. That is, in the illustrated embodiment, the pressure-adjusting portion 162 is configured such that the length of its outer surface protruding toward the relay engagement groove 150 increases from the upper side closer to the lower side. In other words, the pressure-adjusting portion 162 extends obliquely relative to the relay engagement groove 150 along its height direction.

[0187] Therefore, when the relay assembly 30 is combined with the BDU assembly 20, the BDU joint 500 can be easily moved downward using the inclined pressure tilt 162.

[0188] The pressure tilting part 162 is combined with the relay protrusion 163.

[0189] The relay engagement protrusion 163 is configured to maintain the engagement state of the BDU assembly 20 and the relay assembly 30. The relay engagement protrusion 163 is received in the BDU engagement groove 530 and supports the support surface 550. This prevents the relay assembly 30, engaged with the relay engagement portion 100, from arbitrarily escaping. The relay engagement protrusion 163 is formed most prominently towards the relay engagement groove 150 in the structure of the relay engagement member 160.

[0190] The relay connecting protrusion 163 and the pressure-adjusting portion 162 are continuously formed. The relay connecting protrusion 163 and the pressure-adjusting portion 162 are continuously formed on one side (the lower side in the illustrated embodiment) in the height direction. The protrusion length of the relay connecting protrusion 163 may be the same as the protrusion length of the lower side of the pressure-adjusting portion 162.

[0191] At this time, the relay engagement protrusion 163 can have the same cross-sectional area along its height direction. That is, in the illustrated embodiment, the outer surface of the relay engagement protrusion 163 extends parallel to the inner surface of the relay support member 130 in the vertical direction.

[0192] Therefore, when the relay engagement protrusion 163 is inserted into the BDU engagement groove 530, the side of the relay engagement protrusion 163 in the height direction (the lower side in the illustrated embodiment) supports the support surface 550, thereby stably maintaining the engagement state of the relay assembly 30 and the BDU assembly 20.

[0193] The busbar support protrusion 170 supports the busbar (not shown in the drawings) that is connected to and energized by the BDU assembly 20 and the relay assembly 30, respectively. After the busbar (not shown in the drawings) is placed on the busbar support protrusion 170, the relay assembly 30 is connected to the relay coupling part 100, thereby enabling the busbar (not shown in the drawings) to be connected to the relay assembly 30.

[0194] The busbar support protrusion 170 can be configured in any shape to support the busbar (not given reference numerals). In the illustrated embodiment, the busbar support protrusion 170 protrudes from the upper side of the BDU housing 21.

[0195] Multiple busbar support protrusions 170 may be formed. The multiple busbar support protrusions 170 may be arranged spaced apart from each other and support multiple busbars (not given reference numerals) at different positions.

[0196] In the illustrated embodiment, a pair of busbar support protrusions 170 are provided. One busbar support protrusion 170 is arranged adjacent to the relay receiving slot 120 and is coupled to one of the relay terminals 410. The other busbar support protrusion 170 is arranged adjacent to the relay support member 130 and is coupled to the other relay terminal 410.

[0197] Reference Figures 12-20 According to an embodiment of the present invention, the battery control unit 1 includes a relay assembly 30.

[0198] The relay assembly 30 according to an embodiment of the present invention can be combined and used with other devices. In one embodiment, the relay assembly 30 can be combined and used with a BDU assembly 20 installed on an electric vehicle. In this embodiment, the relay assembly 30 can electrically connect the BDU assembly 20 to an external structure.

[0199] The relay assembly 30 can be configured to allow or disconnect electrical connections to external structures. For this purpose, the relay assembly 30 can be operated via control information applied in the BDU assembly 20. That is, the relay assembly 30 can also be electrically connected to another structure that transmits said control information.

[0200] In particular, the relay assembly 30 and the BDU assembly 20 according to the present invention can be easily combined while maintaining their combined state stably.

[0201] In the illustrated embodiment, the relay assembly 30 includes: a sensor terminal portion 200, a relay cover 300, an arc chamber 400, a BDU junction portion 500, and a control module 600.

[0202] The sensor terminal section 200 generates detection information related to the state of the relay assembly 30. The sensor terminal section 200 can be electrically connected to the control module 600 and transmit the generated detection information. The generated detection information can be transmitted to the BDU assembly 20 through a coupling connector 140 that is electrically connected to the control module 600.

[0203] The sensor terminal 200 is coupled to the relay terminal 410 located in the arc chamber 400. The sensor terminal 200 can generate detection information related to the current flowing in the relay terminal 410 or the temperature of the relay terminal 410.

[0204] The sensor terminal portion 200 can be of any form that allows it to be coupled to the relay terminal 410. In the illustrated embodiment, the sensor terminal portion 200 has a length in the front-to-back direction, and its rear end is formed as an annular shape with a hollow portion inside. The relay terminal 410 can be coupled through and into the sensor terminal portion 200.

[0205] Multiple sensor terminal portions 200 may be provided. These multiple sensor terminal portions 200 can be respectively connected to and energized with multiple relay terminals 410 and control module 600. In the illustrated embodiment, the sensor terminal portions 200 include a first sensor terminal portion 200a and a second sensor terminal portion 200b, and are provided as a pair.

[0206] The first sensor terminal 200a is coupled to the first relay terminal 411 and generates detection information related to the state of the first relay terminal 411. The second sensor terminal 200b is coupled to the second relay terminal 412 and generates detection information related to the state of the second relay terminal 412.

[0207] The sensor terminal section 200 is supported by the relay cover 300.

[0208] The relay cover 300 forms part of the outer shape of the relay assembly 30. A space is formed inside the relay cover 300 to accommodate the arc chamber 400. The relay cover 300 is detachably coupled to the BDU coupling portion 500 and coupled to the control module 600 via the sensor terminal portion 200. The relay cover 300 is located between the sensor terminal portion 200 and the BDU coupling portion 500.

[0209] The relay cover 300 may be made of an electrically insulating material. This is to prevent accidental energization between the relay assembly 30 and other external structures. In one embodiment, the relay cover 300 may be made of a synthetic resin material such as reinforced plastic.

[0210] exist Figures 14-17 In the embodiment shown, the relay cover 300 includes: a cover body 310, an insulating plate 320, a connecting arm 330, a connecting opening 340, a connecting body 350, and a first connecting portion 360.

[0211] The cover body 310 constitutes the main body of the relay cover 300. Other structures of the relay cover 300 may be formed or incorporated on the cover body 310. In the illustrated embodiment, an insulating plate 320 and a connecting arm 330 are formed on the cover body 310.

[0212] The cover body 310 can be a shape corresponding to the shape of the BDU joint 500. In the illustrated embodiment, the cover body 310 is a three-dimensional graphic shape with a length in the front-to-back direction shorter than its width in the left-to-right direction and a height in the vertical direction.

[0213] A plurality of openings are formed through one side (the upper side in the illustrated embodiment) of the cover body 310 in the height direction. A plurality of relay terminals 410 pass through the plurality of openings respectively. The relay terminals 410 can pass through the openings and be exposed to the outside.

[0214] The insulating plate 320 is located on one side (i.e., the upper side) of the cover body 310. Connecting arms 330 are attached to each side of the cover body 310 in the width direction (left and right sides in the illustrated embodiment).

[0215] In the illustrated embodiment, the cover body 310 includes a cover space 311.

[0216] The cover space 311 is a space formed inside the cover body 310. The cover space 311 accommodates the arc chamber 400. Furthermore, although not indicated by reference numerals, the cover space 311 can accommodate the magnetic components surrounding the arc chamber 400.

[0217] The cover space 311 communicates with the outside through an opening formed on one side (i.e., the upper side) of the cover body 310. The relay terminal 410 of the arc chamber 400 housed in the cover space 311 can be exposed at least partially to the outside of the cover body 310 through the opening.

[0218] One side (the lower side in the illustrated embodiment) of the cover space 311 in the height direction is open. The arc chamber 400 can be accommodated in the cover space 311 through said side.

[0219] The cover space 311 can be a shape corresponding to the shape of the cover body 310. In the illustrated embodiment, the cover space 311 is formed as a three-dimensional graphic space with a length in the front-to-back direction shorter than its width in the left-to-right direction and a height in the vertical direction.

[0220] The insulating plate 320 provides physical and electrical insulation to the multiple relay terminals 410 that penetrate the cover body 310 and are exposed to the outside.

[0221] The insulating plate 320 is joined to the cover body 310. The insulating plate 320 is located between a pair of relay terminals 410, which pass through a pair of openings spaced apart from each other in the left-right direction.

[0222] The insulating plate 320 can be of any shape capable of physically and electrically separating a pair of relay terminals 410. In the illustrated embodiment, the insulating plate 320 is formed as a plate having a length in the front-to-back direction, a thickness in the left-to-right direction, and a height in the top-to-bottom direction.

[0223] The connecting arm 330 is the portion where the relay cover 300 and the BDU connecting portion 500 are joined. The connecting arm 330 at least partially covers each side (left and right sides in the illustrated embodiment) of the BDU connecting portion 500 in the width direction.

[0224] The connecting arm 330 is engaged with the cover body 310. The connecting arm 330 extends downward from the lower end of the cover body 310 in the width direction. Multiple connecting arms 330 may be provided. Multiple connecting arms 330 may be arranged spaced apart from each other and engaged with the cover body 310 respectively.

[0225] In the illustrated embodiment, the connecting arm 330 includes a first connecting arm 330a continuously formed with the lower left end of the cover body 310 and a second connecting arm 330b continuously formed with the lower right end of the cover body 310.

[0226] The connecting arm 330 can be of any shape that connects to the cover body 310 and at least partially covers the BDU connecting portion 500, and is capable of connecting to the BDU connecting portion 500. In the illustrated embodiment, the connecting arm 330 is formed as a polygonal plate having a length in the front-back direction, a thickness in the left-right direction, and a height in the vertical direction.

[0227] At this point, the connecting arm 330 can be configured such that its width (i.e., its length in the front-to-back direction) changes along its height direction. In the illustrated embodiment, the upper side of the connecting arm 330 is longer than the lower side. In other words, the connecting arm 330 is tapered as it approaches the lower side.

[0228] A coupling opening 340 is formed in the coupling arm 330. Furthermore, the coupling body 350 surrounds one side of the coupling opening 340 in the portion of the coupling arm 330 that is coupled to it.

[0229] The opening 340 forms a space for moving the connecting body 350 and the first connecting portion 360 connected thereto. The opening 340 is located inside the connecting arm 330 and extends through the connecting arm 330 in the thickness direction (left-right direction in the illustrated embodiment).

[0230] The engagement opening 340 can be defined by being surrounded by the inner periphery of the engagement arm 330. In the illustrated embodiment, each side of the engagement opening 340 in the height direction and each side in the length direction (i.e., the upper side, lower side, front side, and rear side) is surrounded by the inner periphery of the engagement arm 330.

[0231] The connecting body 350 and the first connecting portion 360 connected thereto are located in the connecting opening 340. In the illustrated embodiment, the connecting body 350 and the first connecting portion 360 connected thereto are located in the lower part of the connecting opening 340.

[0232] The connecting body 350 is connected to the inner periphery of the connecting arm 330 in a movable or deformable manner. The connecting body 350 is located at the connecting opening 340 and can be moved or deformed in the direction toward the inside of the cover body 310 and in the direction toward the outside of the cover body 310.

[0233] The connecting body 350 is connected to one side of the inner periphery of the connecting arm 330. In the illustrated embodiment, one side (i.e., the lower side) of the connecting body 350 is located below the inner periphery of the connecting arm 330. In this case, the other sides of the connecting body 350 can be arranged separately from the inner periphery of the connecting arm 330.

[0234] Therefore, it is understandable that the main body 350 can move or deform about the said side as an axis.

[0235] The main body 350 is joined with the first joining portion 360. Specifically, the first joining portion 360 is formed on one side of the main body 350 facing the inside of the cover body 310. The main body 350 can move or deform together with the first joining portion 360.

[0236] The connecting body 350 can be any shape that engages with the inner periphery of the connecting arm 330, is located at the connecting opening 340, and can move or deform together with the first connecting portion 360. In the illustrated embodiment, the connecting body 350 is formed as a polygonal plate having a length in the front-back direction, a thickness in the left-right direction, and a height in the vertical direction.

[0237] At this point, the cross-sectional area of ​​the connecting body 350 can be formed differently along its height direction. In the illustrated embodiment, the cross-sectional area of ​​the upper portion of the connecting body 350 is smaller than the cross-sectional area of ​​the lower portion of the connecting body 350. In other words, the connecting body 350 is formed to gradually narrow along the direction away from the inner periphery of the connecting arm 330.

[0238] A first joint portion 360 is formed on one side (the inner side in the illustrated embodiment) of the main body 350 in the thickness direction.

[0239] The first connecting part 360 is a structure in which the relay cover 300 and the BDU connecting part 500 are connected. The first connecting part 360 is inserted into and connected to the second connecting part 520 formed on the BDU connecting part 500.

[0240] The first joint portion 360 is joined to the joint body 350. Specifically, the first joint portion 360 protrudes from the inner side of each side of the joint body 350 in the thickness direction. In the illustrated embodiment, the first joint portion 360 protrudes from the right side of the joint body 350 joined to the first joint arm 330a, and from the left side of the joint body 350 joined to the second joint arm 330b.

[0241] The first joint portion 360 can move together with the joint body 350. That is, when the joint body 350 moves or deforms in a direction toward the inside of the cover body 310 or in a direction opposite to the inside of the cover body 310, the first joint portion 360 can also move together.

[0242] The first connecting portion 360 can be any shape that is accommodated in the second connecting portion 520 and capable of connecting the relay cover 300 and the BDU connecting portion 500. In the illustrated embodiment, the first connecting portion 360 can have a height in the vertical direction and a thickness in the front-back direction, and protrude in the left-right direction.

[0243] At this time, the protruding shapes of the first joint portion 360 can be different from each other along their height direction. That is, in the illustrated embodiment, the upper end of the first joint portion 360 extends flatly and has a surface that extends obliquely toward the joint body 350 in a direction from the upper end to the lower end.

[0244] In other words, the cross-sectional area of ​​the first joint 360 gradually decreases from the top to the bottom.

[0245] The first connecting portion 360 can be connected to the second connecting portion 520 in any form. In one embodiment, the first connecting portion 360 can be connected to the second connecting portion 520 by a snap-fit ​​or a hook-fit. For this purpose, the shape of the first connecting portion 360 can be formed such that the cross-sectional area of ​​one side (i.e., the upper side) in the height direction is larger than the cross-sectional area of ​​the lower side.

[0246] Multiple first joint portions 360 may be formed. These multiple first joint portions 360 may be spaced apart from each other along the length of the joint body 350 and each engage with a second joint portion 520. In the illustrated embodiment, a pair of first joint portions 360 are provided and formed on the inner surface of the joint body 350 in a manner that they are spaced apart from each other in the front-rear direction.

[0247] In the illustrated embodiment, it is assumed that the first joint portion 360 is configured as a joint protrusion and is received in the second joint portion 520, which is formed as a cover joint groove. Alternatively, the first joint portion 360 may be formed as a joint groove and the second joint portion 520 may be configured as a protrusion, thereby engaging with each other.

[0248] In any case, the relay connection 100 and the BDU connection 500 can be connected to each other by connecting the first connection 360 and the second connection 520.

[0249] The arc chamber 400 is configured to extinguish the electric arc generated when the relay assembly 30 cuts off the energization of an external structure. The arc chamber 400 is formed of an electrically or thermally insulating material to prevent any leakage of the generated arc and to prevent damage caused by heat or pressure. In one embodiment, the arc chamber 400 may be formed of a ceramic material.

[0250] The arc chamber 400 is integrated with the relay cover 300. Specifically, the arc chamber 400 is housed within the cover space 311 of the relay cover 300 and is not exposed to the outside. The electric arc generated in the arc chamber 400 can be guided by the magnetic field formed by a magnetic component (not given reference numerals) disposed on the relay cover 300.

[0251] The arc chamber 400 is coupled to the BDU coupling portion 500. One side of the arc chamber 400 in the height direction (the lower side in the illustrated embodiment) can be coupled to and supported by the BDU coupling body 510.

[0252] The arc chamber 400 can be a shape corresponding to the shape of the cover space 311. In the illustrated embodiment, the arc chamber 400 is a three-dimensional shape with a length in the front-to-back direction shorter than its width in the left-to-right direction and a height in the vertical direction.

[0253] In the illustrated embodiment, the arc chamber 400 includes a relay terminal 410.

[0254] The relay terminal 410 is a structure that allows the relay assembly 30 and the BDU assembly 20 to be electrically connected. The relay terminal 410 is connected to the arc chamber 400, with a portion located outside the arc chamber 400 and the remainder located inside the arc chamber 400. The portion of the relay terminal 410 is exposed to the outside of the relay cover 300 through an opening formed on the upper side of the cover body 310.

[0255] The relay terminal 410 is coupled to the sensor terminal section 200. The sensor terminal section 200 can generate detection information related to the state of the relay terminal 410 and provide it to the control module 600. In one embodiment, the relay terminal 410 can be coupled through to the sensor terminal section 200.

[0256] The relay terminal 410 is connected to and energized by the busbar (not shown in the figure). After the relay terminal 410 is connected to the busbar (not shown in the figure), the fastening member 40 can be connected to the relay terminal 410 to fix the relay terminal 410 and the busbar (not shown in the figure).

[0257] Multiple relay terminals 410 may be provided. Multiple relay terminals 410 may simultaneously contact with movable contacts (not shown in the figures) that are vertically arranged inside the arc chamber 400 to energize, or simultaneously separate to de-energize.

[0258] In the illustrated embodiment, the relay terminal 410 includes a first relay terminal 411 and a second relay terminal 412. The first relay terminal 411 and the second relay terminal 412 are spaced apart from each other in the width direction (left-right direction in the illustrated embodiment) of the cover body 310.

[0259] An insulating plate 320 is located between the first relay terminal 411 and the second relay terminal 412. The first relay terminal 411 and the second relay terminal 412 can be physically and electrically separated by the insulating plate 320. The first relay terminal 411 is connected to the first sensor terminal portion 200a. The second relay terminal 412 is connected to the second sensor terminal portion 200b.

[0260] The process of the first relay terminal 411 and the second relay terminal 412 simultaneously contacting and separating with the movable contact (not given reference numerals) to energize and de-energize is known technology, therefore detailed description is omitted.

[0261] The BDU coupling portion 500 forms another part of the outer shape of the relay assembly 30. The BDU coupling portion 500 can be coupled with the relay cover 300 to form the outer shape of the relay assembly 30. In one embodiment, the BDU coupling portion 500 can be detachably coupled with the relay cover 300.

[0262] The BDU joint 500 is joined to the arc chamber 400. The BDU joint 500 supports the arc chamber 400 on one side in the height direction (the lower side in the illustrated embodiment).

[0263] The BDU junction 500 is connected to and energized with the control module 600. A coil (not shown in the figures) located in the BDU junction 500 can be operated by a control signal applied by the control module 600. Thus, the relay assembly 30 can allow or cut off power to other external structures.

[0264] The BBDU coupling 500 is coupled to the BDU assembly 20. Specifically, the BDU coupling 500 can be coupled to the relay coupling 100. Therefore, other structures of the relay assembly 30 coupled to the BDU coupling 500 can also be coupled to the BDU assembly 20.

[0265] On the other hand, the BDU junction 500 can accommodate and support other structures that allow the relay assembly 30 to perform its own functions.

[0266] As an example, the BDU junction 500 can support a fixed core (not shown), a movable core (not shown), or a coil (not shown) disposed on the relay assembly 30. In other words, the BDU junction 500 can support the relay assembly 30 to an externally electrically connected structure or other structures that are magnetized by said structure.

[0267] That is, the BDU joint 500 can be configured as a yoke.

[0268] At this time, the relay assembly 30 according to this embodiment of the present invention can be configured such that the structure (i.e., the fixed core (not shown), the movable core (not shown), or the coil (not shown)) is supported only by the BDU joint 500. That is, no additional housing or the like is needed to support the fixed core (not shown), the movable core (not shown), or the coil (not shown).

[0269] Therefore, the number of components constituting the relay assembly 30 is reduced, thereby reducing manufacturing costs and time. Furthermore, the overall weight of the relay assembly 30 is also reduced, as is the overall weight of the relay assembly 30 and the battery control unit 1 coupled thereto.

[0270] Furthermore, the BDU coupling portion 500 directly engages with the relay coupling portion 100 of the BDU assembly 20. That is, the relay assembly 30 can be engaged with the BDU assembly 20 through the BDU coupling portion 500 without the need for additional structures.

[0271] Therefore, the relay assembly 30 and the BDU assembly 20 can be easily combined. Furthermore, the combined state of the relay assembly 30 and the BDU assembly 20 can be stably maintained.

[0272] exist Figures 18-19 In the embodiment shown, the BDU coupling portion 500 includes: a BDU coupling body 510, a second coupling portion 520, a BDU coupling groove 530, a BDU coupling opening 540, and a support surface 550.

[0273] The BDU coupling body 510 forms the outer shape of the BDU coupling portion 500. Other structures of the BDU coupling portion 500 are formed or attached to the BDU coupling body 510. In the illustrated embodiment, the BDU coupling body 510 has a second coupling portion 520, a BDU coupling groove 530, a BDU coupling opening 540, and a support surface 550.

[0274] The BDU coupling body 510 is coupled to the relay cover 300. The coupling is achieved by inserting the first coupling portion 360 of the relay cover 300 into the second coupling portion 520. The BDU coupling body 510 may be at least partially surrounded by the coupling arm 330 and the coupling body 350.

[0275] The BDU connecting body 510 is connected to the arc chamber 400. The BDU connecting body 510 supports the arc chamber 400 from below. The interior of the BDU connecting body 510 can be formed with a space to accommodate a movable core (not given a reference numeral) so that the movable core can be raised and lowered.

[0276] The BDU coupling body 510 is coupled to the relay coupling portion 100. Specifically, the BDU coupling body 510 may be located in the relay receiving space 110 and supported by the relay support member 130. Further, the BDU coupling body 510 may be inserted into the relay coupling slot 150 and supported by the relay support member 130.

[0277] The BDU connecting body 510 can be a shape corresponding to the relay receiving space 110. In the illustrated embodiment, the BDU connecting body 510 is a three-dimensional graphic shape with a length in the front-to-back direction shorter than its width in the left-to-right direction and a height in the vertical direction. In this case, each side (i.e., the front and rear sides) of the BDU connecting body 510 in the length direction is open.

[0278] In the illustrated embodiment, the BDU bonding body 510 includes a first surface 511, a second surface 512, and a third surface 513.

[0279] The first surface 511 forms one side of the BDU bonding body 510 in the width direction (the left side in the illustrated embodiment). The first surface 511 is arranged facing the second surface 512 across a space formed inside the BDU bonding body 510. The first surface 511 and the third surface 513 are formed continuously. In the illustrated embodiment, one side (i.e., the lower side) of the first surface 511 in the height direction is formed continuously with the third surface 513.

[0280] The first surface 511 can be one side of the BDU bonding body 510 and can be of any shape capable of partially enclosing the space formed inside the BDU bonding body 510. In the illustrated embodiment, the first surface 511 is formed as a plate having a length in the front-back direction, a thickness in the left-right direction, and a height in the up-down direction.

[0281] The first surface 511 is inserted into the relay engagement groove 150 formed inside the first relay support member 130a. Each side (i.e., the left and right sides) of the first surface 511 in the thickness direction can be supported by the first relay support member 130a. One side of the first surface 511 in the length direction (the front side in the illustrated embodiment) can be supported by the support protrusion 131.

[0282] The first surface 511 has a second joint 520, a BDU joint groove 530, a BDU joint opening 540, and a support surface 550.

[0283] Specifically, a second joint portion 520 is formed through (or recessed) on one side of the first surface 511 in the height direction (the upper end in the illustrated embodiment). Furthermore, a BDU joint opening portion 540 is formed recessed on one side of the first surface 511 in the length direction (the front side in the illustrated embodiment).

[0284] Furthermore, along the length direction of the first surface 511 (i.e., from the front to the rear), a BDU engagement opening 540, a support surface 550, and a BDU engagement groove 530 are sequentially formed.

[0285] The second surface 512 forms the other side (the right side in the illustrated embodiment) of the BDU bonding body 510 in the width direction. The second surface 512 is arranged facing the first surface 511 across a space formed inside the BDU bonding body 510. The second surface 512 and the third surface 513 are formed continuously. In the illustrated embodiment, one side (i.e., the lower side) of the second surface 512 in the height direction is formed continuously with the third surface 513.

[0286] The second surface 512 can be any shape that constitutes the other side of the BDU bonding body 510 and can partially surround the space formed inside the BDU bonding body 510. In the illustrated embodiment, the second surface 512 is formed as a plate having a length in the front-back direction, a thickness in the left-right direction, and a height in the up-down direction.

[0287] The second surface 512 is inserted into the relay engagement groove 150 formed inside the second relay support member 130b. Each side (i.e., the left and right sides) of the second surface 512 in the thickness direction can be supported by the second relay support member 130b. One side of the second surface 512 in the length direction (the front side in the illustrated embodiment) can be supported by the support protrusion 131.

[0288] The second surface 512 has a second joint portion 520, a BDU joint groove 530, a BDU joint opening portion 540, and a support surface 550.

[0289] Specifically, a second joint portion 520 is formed through (or recessed) on one side of the second surface 512 in the height direction (the upper end in the illustrated embodiment). Furthermore, a BDU joint opening portion 540 is formed recessed on one side of the second surface 512 in the length direction (the front side in the illustrated embodiment).

[0290] Furthermore, along the length direction of the second surface 512 (i.e., from the front to the rear), a BDU engagement opening 540, a support surface 550, and a BDU engagement groove 530 are sequentially formed.

[0291] The third surface 513 forms one side of the BDU bonding body 510 in the height direction (the lower side in the illustrated embodiment). The third surface 513 is disposed facing the arc chamber 400 across the space formed inside the BDU bonding body 510. The third surface 513 is formed continuously with the first surface 511 and the second surface 512, respectively. In the illustrated embodiment, each side (i.e., the left and right sides) of the third surface 513 in the width direction is formed continuously with the first surface 511 and the second surface 512, respectively.

[0292] The third surface 513 can be one side of the BDU bonding body 510 in the height direction and can be of any shape capable of partially enclosing the space formed inside the BDU bonding body 510. In the illustrated embodiment, the third surface 513 is formed as a plate having a length in the front-back direction, a width in the left-right direction, and a thickness in the top-bottom direction.

[0293] The third surface 513 is inserted into the relay engagement grooves 150 formed inside the first relay support member 130a and the second relay support member 130b, respectively. Each side (i.e., the upper and lower sides) of the third surface 513 in the thickness direction can be supported by the first relay support member 150a and the second relay support member 150b, respectively.

[0294] The second coupling portion 520 is the part where the BDU coupling portion 500 is joined to the relay cover 300. The second coupling portion 520 accommodates the first coupling portion 360 in a retractable manner. At this time, the second coupling portion 520 accommodates the first coupling portion 360 to prevent the accommodated first coupling portion 360 from being arbitrarily pulled out without the application of external force.

[0295] Therefore, the second joint 520 can be engaged with the first joint 360 by means of a hook or a snap fastener.

[0296] A second joint 520 is formed on the BDU joint body 510. Multiple second joints 520 may be formed. Multiple second joints 520 may be detachably joined to multiple first joints 360 respectively.

[0297] In the illustrated embodiment, a second joint portion 520 is formed on the first surface 511 and the second surface 512, respectively. The second joint portion 520 is recessed (or penetrates) at the upper corner of the first surface 511 and the upper corner of the second surface 512 along their thickness direction. The second joint portion 520 is located at the central portion along the length direction of the first surface 511 and the second surface 512.

[0298] The number and position of the second joint 520 can be changed accordingly to the number and position of the first joint 360.

[0299] The second joint portion 520 formed on the first surface 511 is joined to the first joint portion 360 joined to the first joint arm 330a. The second joint portion 520 formed on the second surface 512 is joined to the first joint portion 360 joined to the second joint arm 330b.

[0300] The BDU engagement groove 530 is the part where the BDU engagement portion 500 engages with the relay engagement portion 100. The BDU engagement groove 530 accommodates the relay engagement protrusion 163 provided on the relay engagement member 160 in a retractable manner. At this time, the BDU engagement groove 530 can accommodate the relay engagement protrusion 163 so as to prevent the accommodated relay engagement protrusion 163 from being arbitrarily pulled out without the application of external force.

[0301] Therefore, the BDU engagement groove 530 can be engaged with the relay engagement protrusion 163 by a hook or a snap-fit ​​method.

[0302] BDU engagement slots 530 are formed on the BDU engagement body 510. Multiple BDU engagement slots 530 can be provided. Multiple BDU engagement slots 530 can be detachably engaged with multiple relay engagement protrusions 163 respectively.

[0303] In the illustrated embodiment, BDU engagement grooves 530 are formed through the first surface 511 and the second surface 512 along their thickness direction. Each BDU engagement groove 530 is positioned at a predetermined distance from the front corner of the first surface 511 to the rear. Each BDU engagement groove 530 is positioned facing the BDU engagement opening 540 across the support surface 550.

[0304] Furthermore, another BDU engagement groove 530 is positioned at a predetermined distance from the front corner of the second surface 512 toward the rear. This other BDU engagement groove 530 is positioned facing the BDU engagement opening 540 across the support surface 550.

[0305] Therefore, it is understandable that when the BDU coupling body 510 is inserted into the relay coupling groove 150, the relay coupling protrusion 163 is first inserted into the BDU coupling opening 540 and then pulled out, and after contacting the support surface 550, it is inserted into the BDU coupling groove 530.

[0306] The BDU engagement slot 530 is located on one side (the lower side in the illustrated embodiment) in the height direction of the first surface 511 and the second surface 512. The number and position of the BDU engagement slots 530 can be changed accordingly with the number and position of the relay engagement members 160.

[0307] The BDU coupling groove 530 formed on the first surface 511 engages with the relay coupling member 160 which is engaged with the first relay support member 130a. The BDU coupling groove 530 formed on the second surface 512 engages with the relay coupling member 160 which is engaged with the second relay support member 130b.

[0308] When the BDU engagement portion 500 engages with the relay support member 130, the BDU engagement opening 540 can determine whether the BDU engagement groove 530 is inserted into a position that can engage with the relay engagement protrusion 163.

[0309] Specifically, the BDU engagement opening 540 can accommodate the relay engagement protrusion 163 before the BDU engagement groove 530. As the BDU engagement 500 is inserted, the relay engagement protrusion 163 can be drawn out from the BDU engagement opening 540 and contact the support surface 550 before being accommodated in the BDU engagement groove 530.

[0310] Therefore, the vibration exerted on the operator during the process of introducing and withdrawing the relay engagement protrusion 163 can be used to determine whether the BDU engagement part 500 is engaged with the relay engagement part 100 in the correct position.

[0311] Furthermore, the side of the BDU engagement opening 540 that allows the BDU engagement portion 500 to be inserted (i.e., the front side in the illustrated embodiment) is open. Therefore, in the initial stage of engagement between the BDU engagement portion 500 and the relay engagement portion 100, the relay engagement protrusion 163 is inserted into the BDU engagement opening 540 without generating additional vibration.

[0312] Therefore, even in the initial stage of combining the relay assembly 30 with the BDU assembly 20, the operator can easily determine whether the relay assembly 30 is configured in the correct position.

[0313] BDU connection opening 540 is formed on BDU connection body 510. Multiple BDU connection openings 540 can be formed. Multiple BDU connection openings 540 can temporarily accommodate multiple relay connection protrusions 163.

[0314] In the illustrated embodiment, BDU engagement openings 540 are formed through the first surface 511 and the second surface 512 along their thickness directions. Each BDU engagement opening 540 is recessed from the front corner of the first surface 511. Each BDU engagement opening 540 is disposed facing the BDU engagement groove 530 across the support surface 550.

[0315] Another BDU engagement opening 540 is recessed and formed at the front corner of the second surface 512. The other BDU engagement opening 540 is disposed facing each other across the support surface 550 and the BDU engagement groove 530.

[0316] The BDU connection opening 540 is located on one side (the lower side in the illustrated embodiment) in the height direction of the first surface 511 and the second surface 512. The number and position of the BDU connection opening 540 can be changed accordingly with the number and position of the relay connection members 160.

[0317] The BDU connection opening 540 formed on the first surface 511 is connected to the relay connection member 160 connected to the first relay support member 130a. The BDU connection opening 540 formed on the second surface 512 is connected to the relay connection member 160 connected to the second relay support member 130b.

[0318] The support surface 550 physically divides the BDU engagement groove 530 and the BDU engagement opening 540. Furthermore, in order to insert the relay engagement protrusion 163, which passes through the BDU engagement opening 540, into the BDU engagement groove 530, the support surface 550 provides an external force for applying pressure outward.

[0319] Furthermore, the support surface 550 is placed on the support protrusion 131 and can limit the distance that the BDU coupling portion 500 is inserted into the relay coupling groove 150.

[0320] The support surface 550 can be defined as a portion of the first surface 511 and a portion of the second surface 512. In the illustrated embodiment, the support surface 550 can be defined as the portion between the BDU engagement groove 530 and the BDU engagement opening 540 formed on the first surface 511 and the portion between the BDU engagement groove 530 and the BDU engagement opening 540 formed on the second surface 512.

[0321] The support surface 550 is located between the BDU mating groove 530 and the BDU mating opening 540 along the length direction of the first surface 511 or the second surface 512 (the front-to-back direction in the illustrated embodiment). Corresponding to the position of the BDU mating groove 530 and the BDU mating opening 540, the support surface 550 is arranged biased towards the lower side of the first surface 511 and the second surface 512.

[0322] The control module 600 is a part that can be electrically connected to the relay assembly 30 and the BDU assembly 20. The control module 600 can be detachably connected to and energized with the connection connector 140 provided on the relay connection part 100.

[0323] The control module 600 is integrated with the sensor terminal section 200. The detection information generated by the sensor terminal section 200 can be transmitted to the BDU assembly 20 through the control module 600.

[0324] The control module 600 is coupled to the BDU junction 500. The control module 600 can be electrically connected to a control terminal (not shown) provided on the BDU junction 500. The control module 600 can apply control power to a coil (not shown) provided on the BDU junction 500.

[0325] The control module 600 can be configured at any position to engage with the coupling connector 140 when the BDU coupling portion 500 is received in the relay coupling slot 150. In the illustrated embodiment, the control module 600 is located on the front side of the relay cover 300 and the BDU coupling portion 500. The control module 600 can be inserted into the relay receiving slot 120 and engage with the coupling connector 140.

[0326] Reference Figure 19 The process of assembling the relay assembly 30 according to an embodiment of the present invention is shown as an example.

[0327] With the BDU joint 500 engaged with and supporting the arc chamber 400, the relay cover 300 moves toward the BDU joint 500. At this time, the first joint 360, respectively provided in the first joint arm 330a and the second joint arm 330b, is inserted into the second joint 520, respectively formed on the first surface 511 and the second surface 512. In this state, the first joint arm 330a and the second joint arm 330b can partially cover the upper sides of the first surface 511 and the second surface 512.

[0328] In one embodiment, as described above, the first connecting portion 360 can be engaged with the second connecting portion 520 by a snap-fit ​​or a hook-and-loop mechanism. That is, due to the shape of the first connecting portion 360, the first connecting portion 360 and the second connecting portion 520 will not be arbitrarily separated.

[0329] Reference Figures 21-22 The process of combining the relay assembly 30 and the BDU assembly 20 according to an embodiment of the present invention is shown as an example.

[0330] The relay assembly 30 moves toward the BDU assembly 20 and engages with the relay coupling 100.

[0331] At this time, the BDU coupling portion 500 can be accommodated in the relay coupling slot 150 and coupled with the relay coupling member 160, and is supported by the relay support member 130. Simultaneously, the control module 600 can be accommodated in the relay receiving slot 120 and electrically coupled with the coupling connector 140.

[0332] When the relay assembly 30 and the BDU assembly 20 are fully connected, the fastening member 40 can be connected to the relay terminal 410 so that the relay assembly 30 is connected to the bus (not shown in the figure) and energized.

[0333] Reference Figures 23-26 The diagram shows the state of the relay assembly 30 combined with the BDU assembly 20 as an example.

[0334] In this state, the first surface 511 is inserted into the relay engagement groove 150 formed on the first relay support member 130a, and is supported in the thickness direction (i.e., the left and right sides). The second surface 512 is inserted into the relay engagement groove 150 formed on the second relay support member 130b, and is supported in the thickness direction (i.e., the left and right sides).

[0335] The third surface 513 is inserted into the relay engagement slots 150 formed on the first relay support member 130a and the second relay support member 130b, and is supported in the thickness direction (i.e., the upper and lower sides). The control module 600 is accommodated in the relay receiving slot 120 and is electrically connected to the engagement connector 140.

[0336] Furthermore, in this state, the support surface 550 is supported by the support protrusion 131. This limits the distance at which the BDU coupling portion 500 can be inserted into the relay coupling groove 150.

[0337] The relay engagement protrusion 163 passes sequentially through the BDU engagement opening 540 and the support surface 550 and is inserted into the BDU engagement groove 530. The relay engagement protrusion 163 is configured such that the cross-sectional area of ​​its lower side is larger than that of its upper side, and the lower side of the relay engagement protrusion 163 contacts the support surface 550. This prevents the relay engagement protrusion 163 from arbitrarily escaping from the BDU engagement groove 530.

[0338] Therefore, the relay assembly 30 and the BDU assembly 20 can be easily connected while maintaining a stable connection.

[0339] Although embodiments of the present invention have been described, the concept of the present invention is not limited to the embodiments presented in this specification. Those skilled in the art can easily propose other embodiments by adding, modifying, deleting, or adding constituent elements within the scope of the same concept, and these should also fall within the scope of the present invention.

Claims

1. A relay assembly for use in a battery control unit, in, include: The relay cover has an internal space. The BDU joint is detachably attached to the relay cover, and The arc chamber, supported by the BDU joint, is housed within the space of the relay cover; The relay cover includes: The main body is covered, forming the aforementioned space. Multiple connecting arms extend from each side of the cover body toward the BDU connecting portion in one direction, and The first joint portion is formed on each of the plurality of joint arms; The BDU joint includes: Multiple faces, having a thickness in the said direction, and The second joint is formed on the plurality of surfaces and is joined with the first joint.

2. The relay assembly according to claim 1, wherein, The relay cover includes: The opening is formed through the interior of the connecting arm along the stated direction, and The main body is located at the joint opening and is joined to one side of the inner periphery of the joint arm surrounding the joint opening; The first joint portion is formed as a joint protrusion protruding from one side of the joint body toward the other joint arm; The second joint is formed to penetrate the plurality of surfaces formed in the BDU joint and to accommodate the cover joint groove of the first joint.

3. The relay assembly according to claim 2, wherein, The connecting arm is formed such that its cross-sectional area decreases in the opposite direction to that of the cover body.

4. The relay assembly according to claim 2, wherein, The bonding body is formed such that its cross-sectional area decreases in the direction toward the cover body.

5. The relay assembly according to claim 2, wherein, The connecting protrusion is formed such that the cross-sectional area of ​​the side facing the cover body is larger than the cross-sectional area of ​​the other side opposite to the cover body; The surfaces connecting one end of the connecting protrusion to the other end of the connecting protrusion are formed to be inclined in the direction toward the BDU connecting portion in the opposite manner to the other connecting arm.

6. A battery control unit, in, include: The cover has an internal space. The BDU assembly, housed within the cover, is electrically connectable to an external battery cell, and A relay assembly, which is the relay assembly according to any one of claims 1 to 5, wherein the relay assembly is combined with and electrically connected to the BDU assembly, and is accommodated in the space of the cover portion; The BDU assembly includes: The relay coupling portion, which is coupled to and energized with the relay assembly, is configured to support the relay assembly in the horizontal direction; The relay assembly includes: The BDU connection is detachably connected to the relay connection.

7. The battery control unit according to claim 6, wherein, The relay connection portion includes: Multiple relay support members, extending along the height direction, having length in one direction and thickness in another, are spaced apart from each other along said other direction. A relay engagement groove is formed in a recess inside the relay support member; The BDU joint includes: Multiple surfaces are inserted into the relay engagement slot, and each side of the multiple surfaces in the other direction is supported by the relay support member.

8. The battery control unit according to claim 7, wherein, The outer side of the relay support member in the other direction is partially open to allow the relay engagement slot to communicate with the outside. The relay connection portion includes: The relay coupling member engages with the outer side of the relay support member in the other direction and with the surface of the BDU coupling portion accommodated in the relay coupling groove.

9. The battery control unit according to claim 8, wherein, The relay connection component includes: The relay coupling body, coupled with the relay support member, is located on the outer side of the relay support member in the other direction, and The relay coupling protrusion is formed by protruding from the surface of the relay coupling body toward the relay coupling groove; The BDU joint includes: The BDU coupling groove is formed through the interior of the surface along the thickness direction of the surface, and the relay coupling protrusion is coupled to the BDU coupling groove.

10. The battery control unit according to claim 9, wherein, The BDU joint includes: The BDU engagement opening is recessed at one corner of the surface and is arranged spaced apart from the BDU engagement groove along the height direction of the relay support member; and The support surface is located between the BDU coupling groove and the BDU coupling opening along the height direction of the relay support member.

11. The battery control unit according to claim 10, wherein, The BDU coupling portion is configured such that the relay coupling protrusion passes sequentially through the BDU coupling opening and the support surface, is accommodated in the BDU coupling groove, and engages with the relay coupling portion.

12. The battery control unit according to claim 9, wherein, The relay engagement protrusion engages with the BDU engagement groove via a hook mechanism.

13. The battery control unit according to claim 7, wherein, The relay coupling slot includes a portion extending along one direction and another portion extending along the other direction. The BDU connection includes one side that is accommodated in one portion of the relay connection slot and another side that is continuously formed with the first side and accommodated in the other portion of the relay connection slot.

14. The battery control unit according to claim 6, wherein, The BDU junction is formed as a yoke, supporting a structural element that is electrically connected to the outside of the relay assembly and another structural element that is magnetized by the one structural element, and is directly coupled to the relay junction.

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