Battery disconnect device

Abstract

A battery disconnect device is disclosed. The battery disconnect device according to one aspect of the present invention may comprise: a body unit on which a relay for disconnecting or supplying electricity is mounted; and a substrate, which is coupled to one surface of the body unit, is electrically connected to the relay, and includes a control unit for controlling whether the relay disconnects or supplies electricity.

Description

Battery disconnect device

[0001] The present invention relates to a battery disconnect device, and more particularly, to a battery disconnect device applied to an electric vehicle.

[0002] The trend toward restricting the use of fossil fuels to combat climate change continues. This trend is affecting not only the power generation sector, but also everyday life.

[0003] Accordingly, research is actively being conducted to move away from conventional vehicles that generate power using fossil fuels such as gasoline or diesel and to drive vehicles using electricity or hydrogen, such as electric vehicles (EVs), hybrid electric vehicles (HEVs), and hydrogen vehicles (HVs).

[0004] EVs, HEVs, HVs, and other vehicles mentioned above require batteries to power the vehicles. Furthermore, a Battery Disconnect Unit (BDU) is essential, directly controlling the supply or disconnection of battery power to the electric vehicle.

[0005] Additionally, these BDUs are electrically connected to the BMS (Battery Management System) that determines whether to supply or cut off power to the electric vehicle, and the BDUs are controlled by the BMS.

[0006] Traditionally, the BDU and BMS have been separate devices. To exchange electrical signals between them, signals must pass through multiple transmission media, such as wires, terminals, and connectors. This reduces the stability of these electrical signals. In particular, when a BDU and BMS are installed in an electric vehicle, the stability of the electrical signals between them directly impacts the vehicle's performance and safety.

[0007] The present invention is intended to solve the above problems, and an object of the present invention is to provide a battery disconnect device that improves the stability of electrical signals between a BUD and a BMS.

[0008] The tasks of the present invention are not limited to the tasks mentioned above, and other tasks not mentioned will be clearly understood by those skilled in the art to which the present invention pertains from the description below.

[0009] According to one aspect of the present invention, a battery disconnect device is provided, comprising: a body part equipped with a relay for cutting off or supplying electricity; and a substrate coupled to one surface of the body part, electrically connected to the relay, and including a control part for controlling whether the relay cuts off or supplies electricity.

[0010] At this time, the battery disconnect device may further include a heat dissipation unit disposed on one side of the substrate to protect the substrate or release heat to the outside.

[0011] At this time, the body part may have a first body hole communicating with the heat dissipation part.

[0012] At this time, the substrate can be coupled to the lower side of the body portion.

[0013] At this time, the battery disconnect device may further include a first cover covering one side of the body portion, and the heat dissipation portion may be arranged on the other side of the body portion.

[0014] At this time, a cover hole for dissipating heat may be formed in the first cover, and a heat dissipation hole for dissipating heat may be formed in the heat dissipation part.

[0015] At this time, the relay may include a terminal that is formed to protrude through the body portion and be directly connected to the substrate, and the substrate may include a connecting portion connected to the terminal.

[0016] At this time, the body part may have a second body hole through which the terminal penetrates.

[0017] At this time, the terminal may be configured in plurality, and the connecting portion may include a first connecting portion coupled to the substrate; a second connecting portion extending from one side of the first connecting portion and formed to surround one of the plurality of terminals; and a third connecting portion extending from the other side of the second connecting portion and formed to surround another one of the plurality of terminals.

[0018] At this time, the body part may include a relay installation part formed to surround at least one side of the relay; and a relay cover part covering the relay.

[0019] At this time, the body part further includes a fixing protrusion arranged inside the relay installation part, and the fixing protrusion is formed to protrude from the body part to fix the relay.

[0020] At this time, the fixing protrusion may include a first fixing protrusion that contacts one side of the corner of the relay; and a second fixing protrusion that extends from the first fixing protrusion and contacts the other side of the corner of the relay.

[0021] At this time, the relay installation part is provided with a first coupling member for coupling with the relay cover part, the relay cover part is provided with a second coupling member coupled with the first coupling member, and the relay cover part can be coupled to the relay installation part by coupling the first coupling member and the second coupling member.

[0022] At this time, the body part has a receiving space for receiving the heat dissipation part, and an end of the heat dissipation part can be positioned higher than an end of the body part. At this time, the heat dissipation part can be exposed to the outside.

[0023] In addition, according to another aspect of the present invention, a method for manufacturing a battery disconnect device for manufacturing a battery disconnect device may include a body part preparation step of preparing a body part having a relay installation part on which a relay is mounted; a substrate bonding step of bonding a substrate including a control part for controlling whether the relay cuts off or supplies electricity to one surface of the body part; a relay mounting step of mounting the relay to the relay installation part; and a relay cover step of covering the relay with a relay cover part.

[0024] At this time, the method for manufacturing the battery disconnect device may further include a heat dissipation part arrangement step of arranging a heat dissipation part that dissipates heat to the outside on the substrate.

[0025] According to the above configuration, the battery disconnection device according to the embodiment of the present invention has the advantage of improving the stability of the electrical connection between the relay and the substrate, as the substrate corresponding to the BMS is directly connected to the relay without using a separate cable.

[0026] In addition, since the heat sink is placed on one side of the board, the heat of the board is minimized from being transferred to the relay, thereby preventing the relay from malfunctioning or being damaged due to heat.

[0027] FIG. 1 is a perspective view showing the appearance of a battery disconnect device according to an embodiment of the present invention.

[0028] FIG. 2 is an exploded perspective view showing a battery disconnect device according to an embodiment of the present invention.

[0029] FIG. 3 is a perspective view showing a substrate of a battery disconnection device according to an embodiment of the present invention.

[0030] Fig. 4 is a perspective view showing a body portion of a battery disconnection device according to an embodiment of the present invention.

[0031] Figure 5 is a flowchart showing a method for manufacturing a battery disconnection device according to an embodiment of the present invention.

[0032] FIG. 6 is a drawing showing a relay of a battery disconnect device according to an embodiment of the present invention mounted on a body.

[0033] FIG. 7 is a drawing showing a substrate of a battery disconnect device according to an embodiment of the present invention mounted on a body.

[0034] Figure 8 is a perspective view from below of a battery disconnect device according to an embodiment of the present invention.

[0035] FIG. 9 is a perspective view of the body of a battery disconnection device according to another embodiment of the present invention, viewed from below.

[0036] Fig. 10 is a perspective view showing a heat dissipation unit mounted on a body of a battery disconnection device according to another embodiment of the present invention.

[0037] FIG. 11 is a side view showing a battery disconnect device according to another embodiment of the present invention.

[0038] Hereinafter, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily practice the present invention. The present invention may be implemented in various different forms and is not limited to the embodiments described herein. To clearly explain the present invention, parts irrelevant to the description are omitted in the drawings, and the same reference numerals designate identical or similar components throughout the specification.

[0039] The words and terms used in this specification and claims should not be construed as limited to their ordinary or dictionary meanings, but should be interpreted in a way that is consistent with the technical idea of ​​the present invention, in accordance with the principles by which the inventor can define terms and concepts in order to best explain his or her invention.

[0040] Therefore, the embodiments described in this specification and the configurations illustrated in the drawings correspond to a preferred embodiment of the present invention, and do not represent all of the technical ideas of the present invention, so there may be various equivalents and modified examples that can replace the configuration at the time of filing of the present invention.

[0041] In this specification, terms such as “include” or “have” are intended to describe the presence of a feature, number, step, operation, component, part or combination thereof described in the specification, but should be understood not to exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts or combinations thereof.

[0042] When a component is said to be "in front of," "behind," "above," or "below" another component, this includes not only being placed "in front of," "behind," "above," or "below" the other component in direct contact with it, but also if there is another component intervening therebetween. Furthermore, when a component is said to be "connected" to another component, this includes not only being directly connected to one another, but also being indirectly connected to one another, unless there are special circumstances.

[0043] Hereinafter, a battery disconnection device according to an embodiment of the present invention will be described with reference to the drawings.

[0044] FIG. 1 is a perspective view showing the appearance of a battery disconnect device according to an embodiment of the present invention, FIG. 2 is an exploded perspective view showing a battery disconnect device according to an embodiment of the present invention, FIG. 3 is a perspective view showing a substrate of a battery disconnect device according to an embodiment of the present invention, and FIG. 4 is a perspective view showing a body part of a battery disconnect device according to an embodiment of the present invention.

[0045] Referring to FIGS. 1 and 4, a battery disconnect device (100) according to an embodiment of the present invention includes a body (110), a first cover (120), a BDU component (140) including a relay (141), a substrate (150), a heat dissipation portion (160), and a second cover (130).

[0046] The above body part (110) is formed to support the BDU component (140).

[0047] As shown in Fig. 4, the body part (110) includes a support part (111), a relay installation part (112a, 112b), and a fixing protrusion (114a, 114b).

[0048] A first body hole (117) penetrating the support member (111) is formed in the support member (111). Accordingly, external air can move through the support member (111) via the first body hole (117).

[0049] The above relay installation portion (112a, 112b) is formed to surround at least one side of the relay (141). In addition, the above relay installation portion (112a, 112b) may be configured in multiple numbers.

[0050] The above-mentioned fixing protrusions (114a, 114b) are arranged inside the relay installation portion (112a, 112b). In addition, the fixing protrusions (114a, 114b) are formed to protrude from the support portion (111) and fix the relay (141). In addition, the fixing protrusions (114a, 114b) may be configured in multiple numbers.

[0051] And, one of the plurality of fixing protrusions (114b) includes a first fixing protrusion (114ba) and a second fixing protrusion (114bb).

[0052] The above first fixed protrusion (114ba) contacts one side of the corner of the relay (141).

[0053] The second fixing protrusion (114bb) extends from the first fixing protrusion (114ba) and contacts the other side of the corner of the relay (141).

[0054] And, as the first fixing protrusion (114ba) comes into contact with one side of the corner of the relay (141) and the second fixing protrusion (114bb) comes into contact with the other side of the corner of the relay (141), the relay (141) is fixed by the first fixing protrusion (114ba) and the second fixing protrusion (114bb).

[0055] The first cover (120) is formed to cover the upper side of the body part (110). In addition, the first cover (120) is coupled to the body part (110). At this time, the first cover (120) includes a first cover body (121) that accommodates the BDU component (140) together with the body part (110).

[0056] In addition, a cover hole (122) is formed on the upper side of the first cover body (121) to allow heat generated by the operation of the BDU component (140) to be discharged to the outside of the first cover (120).

[0057] Additionally, according to various embodiments of the present invention, the cover hole (122) may be provided with a foreign matter blocking member (not shown) that minimizes the inflow of foreign matter from the outside while not interfering with the dissipation of heat. The foreign matter blocking member may be formed in a mesh form and may be placed in the cover hole (122).

[0058] The above BDU component (Battery Disconnect Unit Component) (140) includes a relay (141) that cuts off electricity and various electronic components for driving the relay (141).

[0059] The above relay (141) is electrically connected to the battery (not shown) of the electric vehicle, and can supply or cut off the power of the battery to the electric vehicle, for example, the motor and various electronic devices of the electric vehicle.

[0060] The substrate (150) is coupled to one surface of the body part (110). For example, the substrate (150) is coupled to the lower side of the body part (110). In addition, the body part (110) is disposed between the relay (141) and the substrate (150). In this way, since the body part (110) is disposed between the relay (141) and the substrate (150), the heat of the substrate (150) is blocked from being transferred to the relay (141), thereby preventing the relay (141) from being damaged or malfunctioning due to the heat of the substrate (150).

[0061] Additionally, the substrate (150) is electrically connected to the relay (141).

[0062] In addition, the substrate (150) is provided with a control unit (not shown) that controls whether the relay (141) blocks or supplies electricity. The control unit is electrically connected to the relay (141).

[0063] And, the control unit transmits an electrical signal to the relay (141) to control the operation of the relay (141). That is, the relay (141) can be controlled by the control unit to supply or cut off power from the battery to the electric vehicle.

[0064] In addition, the relay (141) includes a terminal (141a) for direct connection with the substrate (150). The terminal (141a) is formed to protrude on one surface of the relay (141) so as to penetrate the body portion (110) and be connected to the substrate (150).

[0065] In addition, a second body hole (115a, 115b) through which the terminal (141a) penetrates is formed in the body portion (110). That is, the terminal (141a) penetrates the second body hole (115a, 115b) and is connected to the substrate (150).

[0066] And, as shown in FIG. 3, the substrate (150) includes a connecting portion (151) connected to the terminal (141a).

[0067] The above connecting portion (151) includes a first connecting portion (151a) coupled to the substrate (150), a second connecting portion (151b) extending from one side of the first connecting portion (151a), and a third connecting portion (151c) extending from the other side of the first connecting portion (151a).

[0068] The second connecting portion (151b) is formed to be coupled while surrounding the terminal (141a). At this time, since the second connecting portion (151b) is formed to be tilted with respect to the first connecting portion (151a), the second connecting portion (151b) presses the terminal (141a), so that the terminal (141a) smoothly comes into contact with the second connecting portion (151b).

[0069] The third connecting portion (151c) is formed to be coupled while surrounding the terminal (141a). At this time, since the third connecting portion (151c) is formed to be tilted with respect to the first connecting portion (151a), the third connecting portion (151c) presses the terminal (141a), so that the terminal (141a) smoothly comes into contact with the third connecting portion (151c).

[0070] The heat dissipation unit (160) is disposed on one surface of the substrate (150). For example, the heat dissipation unit (160) is disposed on the lower side of the substrate (150). In addition, the heat dissipation unit (160) dissipates heat of the substrate (150) to the outside. At this time, the heat dissipation unit (160) may be a heat sink. However, the heat dissipation unit (160) is not limited to a heat sink, and may be various devices that absorb heat and dissipate it to the outside.

[0071] In this way, since the body part (110), the substrate (150), and the heat dissipation part (160) are sequentially laminated, the heat dissipation part (160) can stably discharge the heat of the substrate (150) to the outside without interfering with the relay (141).

[0072] The second cover (130) is formed to cover the heat dissipation unit (160). In addition, the second cover (130) is coupled to the body unit (110). In addition, according to various embodiments of the present invention, the second cover (130) is not limited to being coupled to the body unit (110), and may be coupled to the heat dissipation unit (160).

[0073] In addition, the first body hole (117) of the body part (110) can be connected to the heat dissipation part (160). Accordingly, the external air can move through the heat dissipation part (160) and the first body hole (117).

[0074] FIG. 5 is a flowchart showing a method for manufacturing a battery disconnect device according to an embodiment of the present invention, FIG. 6 is a drawing showing a state in which a relay of a battery disconnect device according to an embodiment of the present invention is mounted on a body part, FIG. 7 is a drawing showing a state in which a board of a battery disconnect device according to an embodiment of the present invention is mounted on a body part, and FIG. 8 is a perspective view of a battery disconnect device according to an embodiment of the present invention viewed from below.

[0075] Referring to FIGS. 5 to 8, a method for manufacturing a battery disconnect device according to an embodiment of the present invention includes a body preparation step (S110), a substrate bonding step (S120), a relay mounting step (S130), and a relay cover step (S140).

[0076] In the above body part preparation step (S110), as shown in Fig. 5(a), a body part (110) equipped with a relay installation part (112a, 112b) on which the relay (141) is mounted is prepared.

[0077] In the above substrate bonding step (S120), as shown in FIG. 7, the relay (141) is bonded to one surface of the body (110) a substrate (150) including a control unit that controls whether to cut off or supply electricity.

[0078] In the relay mounting step (S130), as illustrated in Fig. 5(b), the relay (141) is mounted on the relay mounting portion (112a, 112b). At this time, the relay mounting portion (112a, 112b) serves as a guide during the installation process of the relay (141).

[0079] And, as shown in Fig. 5(c), the body part (110) is provided with a relay cover part (112c, 112d) that covers the exposed surface of the relay (141).

[0080] In the above relay cover step (S140), the relay cover part (112c, 112d) is covered over the relay (141).

[0081] At this time, the relay installation part (112a, 112b) is provided with a first coupling member (116a, 116b) for coupling with the relay cover part (112c, 112d), and the relay cover part (112c, 112d) is provided with a second coupling member (118a, 118b) for coupling with the first coupling member (116a, 116b).

[0082] And, the first coupling member (116a, 116b) may be formed to protrude from the side of the relay installation part (112a, 112b). And, the second coupling member (118a, 118b) may be formed with a groove into which the first coupling member (116a, 116b) is inserted and fixed. And, by coupling the first coupling member (116a, 116b) and the second coupling member (118a, 118b), the relay cover part (112c, 112d) may be coupled to the relay installation part (112a, 112b).

[0083] In addition, according to various embodiments of the present invention, the first coupling member (116a, 116b) is not limited to being formed in a protruding manner while the second coupling member (118a, 118b) has a groove, and the first coupling member (116a, 116b) and the second coupling member (118a, 118b) may be formed in various structures in which they are coupled to each other.

[0084] In this way, the relay installation portion (112a, 112b) and the relay cover portion (112c, 112d) prevent the relay (141) from being separated from the body portion (110) due to vibrations generated as the electric vehicle is driven.

[0085] In addition, the method for manufacturing a battery disconnect device according to an embodiment of the present invention may further include a heat dissipation part arrangement step of arranging a heat dissipation part that dissipates heat to the outside on the substrate.

[0086] And, as shown in Fig. 8, the second cover (130) is coupled to the body part (110).

[0087] At this time, the second cover (130) includes a second cover body (131) that accommodates the heat dissipation unit together with the body unit (110).

[0088] In addition, a hole (132) is formed on the upper side of the second cover body (131) to allow heat from the heat dissipation unit to be released to the outside of the second cover (130).

[0089] Additionally, according to various embodiments of the present invention, the hole (132) may be provided with a foreign matter blocking member (not shown) that minimizes the inflow of foreign matter from the outside while not interfering with the dissipation of heat. The foreign matter blocking member may be formed in a mesh form and may be placed in the hole (132).

[0090] FIG. 9 is a perspective view of a body of a battery disconnect device according to another embodiment of the present invention as viewed from below, FIG. 10 is a perspective view showing a heat dissipation unit mounted on a body of a battery disconnect device according to another embodiment of the present invention, and FIG. 11 is a side view showing a battery disconnect device according to another embodiment of the present invention.

[0091] Referring to FIGS. 9 to 11, a battery disconnect device (200) according to another embodiment of the present invention includes a heat dissipation unit (260) in which the aforementioned heat dissipation unit and the second cover are integrally formed, and components identical or similar to those of the aforementioned embodiment are replaced with the aforementioned description, and the heat dissipation unit (260) will be examined with focus.

[0092] First, as shown in Fig. 9, a receiving space (118) for receiving the heat dissipation unit (260) is formed in the body portion (110).

[0093] And, as shown in Fig. 10, the heat dissipation unit (260) is accommodated in the accommodation space (118).

[0094] At this time, the heat dissipation part (260) may be a heat sink manufactured by die-casting injection molding. In addition, the heat dissipation part (260) is exposed to the outside.

[0095] In this way, when the battery disconnect device (200) is installed in the housing of the battery pack, since the heat dissipation part (260) is exposed to the outside, the heat dissipation part (260) comes into direct contact with the housing of the battery pack, so that the heat of the heat dissipation part (260) is transferred to the battery pack, thereby improving the performance of the heat dissipation part (260).

[0096] Additionally, as illustrated in FIG. 11, the heat dissipation unit (260) may include a plurality of heat dissipation fins formed parallel to each other.

[0097] And, a heat dissipation hole (260a) through which external air moves is formed between the plurality of heat dissipation fins. The external air can absorb heat from the substrate (150, see FIG. 2) through the heat dissipation hole (260a) and then be discharged to the outside through the heat dissipation hole (260a).

[0098] In addition, the end (260b) of the heat dissipation part (260) may be positioned higher than the end (110b) of the body part (110). That is, since the heat dissipation part (260) is accommodated in the accommodation space (118), even if the body part (110) is mounted on a battery structure (not shown), the heat dissipation part (260) can be prevented from coming into contact with the battery structure.

[0099] Accordingly, since the heat dissipation part (260) does not come into contact with the battery structure, the performance of the heat dissipation part (260) can be prevented from being degraded. In addition, the heat dissipation part (260) can be prevented from having a thermal effect on the battery structure.

[0100] Although the embodiments of the present invention have been described, the spirit of the present invention is not limited to the embodiments presented in this specification, and those skilled in the art who understand the spirit of the present invention will be able to easily propose other embodiments by adding, changing, deleting, or adding components within the scope of the same spirit, but this will also be considered to fall within the spirit of the present invention.

[0101] 100: Battery disconnect device

[0102] 110: Body

[0103] 141: Relay

[0104] 150: Substrate

[0105] 160: Heat dissipation part

Claims

1. A body part equipped with a relay that cuts off or supplies electricity; and A substrate coupled to one surface of the body portion, electrically connected to the relay, and including a control unit that controls whether the relay cuts off or supplies electricity; A battery disconnect device, including:

2. In paragraph 1, A battery disconnect device further comprising a heat dissipation unit disposed on one side of the substrate and protecting the substrate or dissipating heat to the outside.

3. In paragraph 2, A battery disconnect device, wherein the body part has a first body hole communicating with the heat dissipation part.

4. In paragraph 1, A battery disconnect device, wherein the substrate is coupled to the lower side of the body.

5. In paragraph 2, Further comprising a first cover covering one side of the above body portion, A battery disconnect device, wherein the heat dissipation unit is arranged on the other side of the body unit.

6. In paragraph 5, A cover hole is formed in the first cover to dissipate heat, A battery disconnect device in which a heat dissipation hole is formed in the above heat dissipation part to dissipate heat.

7. In paragraph 2, The above relay includes a terminal formed to protrude through the body portion and be directly connected to the substrate, A battery disconnect device, wherein the substrate includes a connecting portion connected to the terminal.

8. In paragraph 7, A battery disconnect device, wherein the body part has a second body hole through which the terminal penetrates.

9. In paragraph 7, The above terminal is composed of plural, The above connection part is, A first connecting portion coupled to the above substrate; A second connecting portion extending from one side of the first connecting portion and formed to surround one of the plurality of terminals; and A battery disconnect device comprising a third connecting portion extending from the other side of the second connecting portion and formed to surround another one of the plurality of terminals.

10. In paragraph 2, The above body part, A relay installation portion formed to surround at least one side of the relay; and A battery disconnect device comprising a relay cover portion covering the above relay.

11. In paragraph 10, The above body part further includes a fixing protrusion arranged inside the relay installation part, A battery disconnect device in which the above-mentioned fixing protrusion is formed to protrude from the body portion and fix the relay.

12. In paragraph 11, The above fixed protrusion is, A first fixed projection contacting one side of the edge of the above relay; and A battery disconnect device comprising a second fixing projection extending from the first fixing projection and contacting the other side of the corner of the relay.

13. In paragraph 10, The above relay installation part is provided with a first coupling member for coupling with the above relay cover part, The relay cover portion is provided with a second coupling member that is coupled with the first coupling member, A battery disconnect device, wherein the relay cover portion is coupled to the relay installation portion by coupling the first coupling member and the second coupling member.

14. In paragraph 2, The above body part has a receiving space that receives the heat dissipation part, A battery disconnect device, wherein the end of the heat dissipation part is located at a higher position than the end of the body part.

15. In paragraph 2, The above heat dissipation unit is a battery disconnect device exposed to the outside.

16. In a method for manufacturing a battery disconnect device, A body part preparation step for preparing a body part having a relay installation part in which a relay is mounted; A substrate bonding step of bonding a substrate including a control unit that controls whether the relay cuts off or supplies electricity to one surface of the body portion; A relay mounting step of mounting the relay to the relay installation part; and A relay cover step for covering the relay cover part on the relay; A method for manufacturing a battery disconnect device, comprising:

17. In paragraph 16, A method for manufacturing a battery disconnect device, further comprising a heat dissipation part arrangement step of arranging a heat dissipation part that radiates heat to the outside on the substrate.

Images