Electronic control unit

Abstract

The electronic control unit according to the present embodiment includes at least one control unit including a first control unit including: a first cooling water jacket in which an inlet and an outlet are formed and in which a cooling water flow path through which cooling water passes and cooling fins are formed; a first flow valve for adjusting a cooling water flow path of the first cooling water jacket; a first housing disposed on the upper side of the first cooling water jacket; a first control board accommodated in a space formed between the first cooling water jacket and the first housing; a second housing disposed on the lower side of the first cooling water jacket; and a second control board accommodated in a space formed between the first cooling water jacket and the second housing.

Description

Technical Field

[0001] The invention relates to an electronic control unit. Background Art

[0002] Examples of components installed in a vehicle include an engine control component (or a motor control component), a power transmission component, a brake component, a suspension component, a steering component, an instrument component, and an information communication control component.

[0003] An electronic control unit (ECU) is a control device having a function of controlling and managing such major components of a vehicle. In a vehicle, a plurality of ECUs are provided according to the components to control the respective components.

[0004] The electronic control unit may include an electronic control unit with a built-in chip for autonomous driving or infotainment (software or media that adds entertainment to the transmission of information) installed on the vehicle. In such an electronic control unit, in order to prevent overheating of the chip, it is preferred to properly cool the chip or the substrate (control board) on which the chip is provided.

[0005] As an example of cooling an electronic control unit, there is an electronic module disclosed in U.S. Patent Gazette US5323292A (authorized on June 21, 1994), which includes an aluminum heat sink directly surrounding an integrated circuit chip and a substrate, and the heat sink includes parallel fins that provide a larger surface area to dissipate heat to the surrounding air.

[0006] US Patent Gazette US5323292A (authorized on June 21, 1994) Summary of the invention

[0007] An object of this embodiment is to provide an electronic control unit that can cool a plurality of control boards more efficiently.

[0008] An object of the present embodiment is to provide an electronic control unit capable of efficiently cooling each control board of a plurality of control units even if the number of control units increases.

[0009] The electronic control unit of this embodiment includes at least one control unit, and the at least one control unit includes a first control unit, and the first control unit includes: a first cooling water jacket, which is formed with an inlet and an outlet, and has a cooling water flow path and cooling fins for cooling water to pass through inside; a first flow valve, which adjusts the cooling water flow path of the first cooling water jacket; a first shell, which is arranged on the upper side of the first cooling water jacket; a first control board, which is accommodated in the space formed between the first cooling water jacket and the first shell; a second shell, which is arranged on the lower side of the first cooling water jacket; and a second control board, which is accommodated in the space formed between the first cooling water jacket and the second shell.

[0010] The first cooling water jacket may include: a first jacket body formed with an inlet and an outlet, and formed with a cooling water flow path and cooling fins; and a first cover combined with the jacket body and covering the cooling water flow path and the cooling fins.

[0011] The first control unit also includes a thermal pad disposed between the top surface of the first cooling water jacket and the bottom surface of the first control board.

[0012] The first control unit also includes a heat conductive pad disposed between the bottom surface of the first cooling water jacket and the top surface of the second control board.

[0013] The first control panel may be an automatic driving panel of the vehicle, and the second control panel may be an information and entertainment panel of the vehicle. The first control panel and the second control panel may be separated vertically and vertically by a first cooling water jacket in the middle.

[0014] The first flow valve may include: a valve housing; a valve body configured to be raised and lowered inside the valve housing and in the cooling water flow path of the first cooling water jacket; and a driving source to raise and lower the valve body.

[0015] A through hole through which the valve cover penetrates may be formed in at least one of the first control plate and the second control plate.

[0016] The first cooling water jacket may be formed with a valve hole through which the valve body passes.

[0017] The at least one control unit may further include a second control unit disposed on an upper side or a lower side of the first control unit.

[0018] The second control unit may include: a second cooling water jacket, which is formed with an inlet and an outlet, and has a cooling water flow path and cooling fins for cooling water to pass through inside; a second flow valve, which adjusts the cooling water flow path of the second cooling water jacket; a third control board, which is arranged on the second cooling water jacket; and a third shell, which covers the third control board.

[0019] The second cooling water jacket may include: a second jacket body formed with an inlet and an outlet, and formed with a cooling water flow path and cooling fins; and a second cover covering the cooling water flow path and the cooling fins.

[0020] The second control unit may further include a thermal pad disposed between the second cooling water jacket and the third control board.

[0021] The second flow valve may include: a valve housing; a valve body configured to be raised and lowered inside the valve housing and in the cooling water flow path of the second cooling water jacket; and a driving source to raise and lower the valve body.

[0022] The third control plate may be formed with a through hole through which the valve cover penetrates.

[0023] The second cooling water jacket may be formed with a valve hole through which the valve body passes.

[0024] The electronic control unit may further include: an inlet manifold connected to the inlet of the first cooling water jacket and the inlet of the second cooling water jacket, respectively; and an outlet manifold connected to the outlet of the first cooling water jacket and the outlet of the second cooling water jacket, respectively.

[0025] The at least one control unit may include a third control unit spaced apart from the second control unit.

[0026] The third control unit may include: a third cooling water jacket, which is formed with an inlet and an outlet, and has a cooling water flow path and cooling fins for cooling water to pass through inside; a third flow valve, which adjusts the cooling water flow path of the third cooling water jacket; a fourth control board, which is arranged on the third cooling water jacket; and a fourth shell, which covers the fourth control board.

[0027] The third cooling water jacket may include: a third jacket body formed with an inlet, an outlet, a cooling water flow path, and cooling fins; and a third cover covering the cooling water flow path and the cooling fins.

[0028] The third control unit may further include a thermal pad disposed between the third cooling water jacket and the fourth control board.

[0029] The third flow valve may include: a valve cover; a valve body configured to rise and fall in the cooling water flow path inside the valve cover and the third cooling water jacket; and a driving source to raise and lower the valve body, and a through hole for the valve cover to pass through may be formed in the fourth control plate.

[0030] The third cooling water jacket may be formed with a valve hole through which the valve body passes.

[0031] The electronic control unit may further include: an inlet manifold connected to the inlet of the first cooling water jacket, the inlet of the second cooling water jacket, and the inlet of the third cooling water jacket, respectively; and an outlet manifold connected to the outlet of the first cooling water jacket, the outlet of the second cooling water jacket, and the outlet of the third cooling water jacket, respectively.

[0032] At least one control unit may also include: a second control unit, which is arranged on the upper side of the first control unit and has a second cooling water jacket, a second flow valve and a third control plate, the second cooling water jacket forms a cooling water flow path for cooling water to pass through, the second flow valve opens and closes the cooling water flow path of the second cooling water jacket, and the third control plate uses the second cooling water jacket for cooling; and a third control unit, which is arranged on the lower side of the first control unit and has a third cooling water jacket, a third flow valve and a fourth control plate, the third cooling water jacket forms a cooling water flow path for cooling water to pass through, the third flow valve opens and closes the cooling water flow path of the third cooling water jacket, and the fourth control plate uses the third cooling water jacket for cooling.

[0033] According to this embodiment, since the first cooling water jacket can cool the first control board and the second control board at the same time between the first control board and the second control board, the structure can be simplified and compact compared with the case where the first control board and the second control board are cooled by independent cooling water jackets respectively.

[0034] In addition, since the first cooling water jacket includes the first jacket body and the first cover, the cooling water flow path or the first flow valve is easy to clean and maintain.

[0035] In addition, since the vehicle's automatic driving board and the vehicle's infotainment board are separated by the first cooling water jacket in the middle and separated up and down, when one of the vehicle's automatic driving board and the vehicle's infotainment board fails, only the failed board can be replaced or repaired, and the vehicle's automatic driving board and the vehicle's infotainment board can be selectively upgraded.

[0036] In addition, since the valve cover body penetrates the through hole formed in at least one of the first control board and the second control board, the valve cover body can be accommodated in the first housing together with the first control board, or the valve cover body can be accommodated in the second housing together with the second control board, thereby making the electronic control unit compact.

[0037] In addition, since the valve body of the first flow valve passes through the valve hole formed in the first cooling water jacket, all or part of the valve cover can be located outside the first cooling water jacket, thereby minimizing the thickness of the first cooling water jacket.

[0038] In addition, since the second control unit can be configured on the top or bottom surface of the first control unit to expand the electronic control unit, the second cooling water jacket of the second control unit can cool the third control board and the first control board at the same time, thereby improving the cooling performance of the first control board.

[0039] In addition, since the second control unit and the third control unit can be arranged on both sides of the first control unit to expand the electronic control unit, the second cooling water jacket of the second control unit can cool the third control board and the first control board at the same time, thereby improving the cooling performance of the first control board, and the third cooling water jacket of the third control unit can cool the second control board and the fourth control board at the same time, thereby improving the cooling performance of the second control board.

[0040] In addition, since the first flow valve provided to the first control unit, the second flow valve provided to the second control unit, and the third flow valve provided to the third control unit can independently adjust the flow of cooling water, the electronic control unit can efficiently perform the cooling function by increasing the flow of cooling water supplied to the control unit including a high heat source and reducing the flow of cooling water supplied to the control unit including a low heat source. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a perspective view of an example of the electronic control unit of this embodiment.

[0042] Figure 2 It is a partially cutaway perspective view of an example of the electronic control unit of this embodiment.

[0043] Figure 3 yes Figure 1 An exploded perspective view of an example of a first control unit is shown.

[0044] Figure 4 yes Figure 3 An exploded perspective view of the first cooling water jacket is shown.

[0045] Figure 5 It is a perspective view of another example of the electronic control unit of this embodiment.

[0046] Figure 6 It is a partially cutaway perspective view of another example of the electronic control unit of the present embodiment.

[0047] Figure 7 yes Figure 5 An exploded perspective view of an example of a second control unit is shown.

[0048] Figure 8 yes Figure 7 An exploded perspective view of the second cooling water jacket is shown.

[0049] Fig. 9 It is a perspective view of still another example of the electronic control unit of this embodiment.

[0050] Fig.10 This is a partially cutaway perspective view of another example of the electronic control unit of the present embodiment.

[0051] Fig.11 yes Fig. 9 An exploded perspective view of an example of a third control unit is shown.

[0052] Fig.12 yes Fig.11 An exploded perspective view of the third cooling water jacket is shown.

[0053] Fig.13 yes Fig.10 An enlarged view of the full flow valve is shown when open.

[0054] Fig.14 yes Fig.10 An enlarged view of the first control unit is shown when it is heated.

[0055] Fig.15 yes Fig.10 An enlarged view of the second control unit is shown when it is heated.

[0056] Fig.16 yes Fig.10 An enlarged view of the third control unit is shown when it is heated.

[0057] Fig.17 This is a diagram of a case where the electronic control unit of this embodiment is cooled by a water-cooling type cooling device.

[0058] Fig.18 This is a diagram of a case where the electronic control unit and the motor of this embodiment are cooled by a water-cooling type cooling device.

[0059] Fig.19 This is a diagram showing a case where the electronic control unit and the additional electronic control unit of the present embodiment are cooled by a water-cooling type cooling device.

[0060] Description of Reference Numerals

[0061] 1: First control unit 2: First cooling water jacket

[0062] 3: First flow valve 4: First housing

[0063] 5: First control board 6: Second housing

[0064] 7: Second control panel 21: Entrance

[0065] 22: outlet 23: cooling water flow path

[0066] 24: Cooling fins DETAILED DESCRIPTION

[0067] Hereinafter, specific embodiments of the present invention will be described in detail with reference to the accompanying drawings.

[0068] Figure 1 is a perspective view of an example of an electronic control unit of this embodiment, Figure 2 is a partially cutaway perspective view of an example of an electronic control unit of this embodiment, Figure 3 yes Figure 1 An exploded perspective view of an example of a first control unit shown in FIG. Figure 4 yes Figure 3 An exploded perspective view of the first cooling water jacket is shown.

[0069] The electronic control unit may include at least one control unit. The at least one control unit may include only one first control unit 1 , or may include an additional control unit in addition to the first control unit 1 .

[0070] exist Figures 1 to 4 2 shows a case where the electronic control unit includes only one first control unit 1 .

[0071] The first control unit 1 may include a first cooling water jacket 2 , a first flow valve 3 , a first housing 4 , a first control board 5 , a second housing 6 and a second control board 7 .

[0072] As an example of the first control unit 1, it may be a semi-automatic autonomous driving control unit capable of implementing level 2 of the autonomous driving level, or an infotainment control unit capable of implementing vehicle infotainment (adding entertaining software or media to the transmission of information), or a parallel control unit capable of executing autonomous driving and infotainment in parallel.

[0073] The first cooling water jacket 2 may be a cooling water jacket that can cool the first control board 5 and the second control board 7 by water cooling between the first control board 5 and the second control board 7 .

[0074] An inlet 21 and an outlet 22 are formed in the first cooling water jacket 2 , and a cooling water flow path 23 through which cooling water passes and cooling fins 24 may be formed inside the first cooling water jacket 2 .

[0075] The first cooling water jacket 2 may have a length in the front-rear direction X, a width in the left-right direction Y, and a thickness in the up-down direction Z.

[0076] The first cooling water jacket 2 may include a jacket body 25 (hereinafter referred to as a first jacket body) and a cover 26 (hereinafter referred to as a first cover).

[0077] like Figure 4As shown, an inlet 21 , an outlet 22 , a cooling water flow path 23 , and cooling fins 24 may be formed in the first jacket body 25 .

[0078] The inlet 21 may be formed at one end of the first jacket body 25 in the length direction X, and the outlet 22 may be formed at the other end of the first jacket body 25 in the length direction X.

[0079] The cooling water flow path 23 may be formed long along the longitudinal direction X of the first jacket body 25 inside the first jacket body 25 .

[0080] The cooling water flow path 23 may include a plurality of unit flow paths 23A, an inlet flow path 23B, and an outlet flow path 23C.

[0081] The cooling fins 24 are heat-conducting fins and may be formed by protruding or bending on the first jacket body 25. The cooling fins 24 may be in a plate shape or a column shape, and the shape is not limited as long as it can promote heat transfer.

[0082] As an example of the cooling fin 24 , it is possible to form a long shape inside the first jacket body 25 along the longitudinal direction X. The cooling fin 24 can divide the cooling water flow path 23 into a plurality of parts.

[0083] The cooling fins 24 may be provided in plural numbers, and the plural cooling fins 24 may be spaced apart from each other in the width direction Y of the first jacket body 25. The cooling water flow path 23 may be divided into a plurality of unit flow paths 23A by the plurality of cooling fins 24. The plurality of unit flow paths 23A may be arranged side by side.

[0084] The cooling fins 24 may be spaced apart from the inlet 21 and the outlet 22 , respectively.

[0085] The front end of the cooling fin 24 may be spaced apart from the inlet 21 , and the rear end of the cooling fin 24 may be spaced apart from the outlet 22 .

[0086] An inlet flow path 23B for distributing the cooling water supplied from the inlet 21 into a plurality of unit flow paths may be formed between the inlet 21 and the cooling fins 24 .

[0087] An outlet flow path 23C may be formed between the outlet 22 and the cooling fin 24 so as to merge the cooling water flowing through the plurality of unit flow paths.

[0088] The top surface of the first jacket body 25 may be provided with an upper rib 25a for assembly with the first housing 4 (see Figure 3 and Figure 4 ).

[0089] A lower rib 25b for assembling with the second housing 6 may protrude from the bottom surface of the first jacket body 25 (see Figure 3 and Figure 4 ).

[0090] The bottom surface of the first jacket body 25 may be formed with an opening 25c (see FIG. 25c ) through which the cooling water flow path 23 and the cooling fins 24 are exposed. Figure 4 ).

[0091] The first cover 26 may cover the cooling water flow path 23 and the cooling fins 24. The first cover 26 may be disposed on the first jacket body 25 so as to cover the opening 25c.

[0092] The first cover 26 can be fastened to the first jacket body 25 by a fastening member such as a screw or a hook.

[0093] The first cooling water jacket 2 may be formed with a valve hole 27 through which the valve body 32 of the first flow valve 3 passes.

[0094] The valve hole 27 may be formed at a position closer to the inlet 21 of the inlet 21 and the outlet 22 .

[0095] The valve hole 27 may be open in the up-down direction toward the inlet flow path 23B.

[0096] As an example, the valve hole 27 may be formed in the top plate of the first jacket body 25 and may face the top surface of the first cover 26. As another example, the valve hole 27 may be formed in the first cover 26 and may face the bottom surface of the top plate of the first jacket body 25.

[0097] The first cooling water jacket 2 may include an inlet connection 28 and an outlet connection 29 .

[0098] A part of the inlet joint 28 may be inserted into the inlet 21. In this case, the cooling water may flow into the inlet flow path 23B after passing through the inside of the inlet joint 28.

[0099] When a part of the inlet joint 28 is inserted into the inlet 21 , the internal flow path formed inside the inlet joint 28 can communicate with the inlet flow path 23B, and the inlet joint 28 can serve as the inlet 21 .

[0100] A part of the outlet joint 29 may be inserted into the outlet 22. In this case, the cooling water in the outlet flow path 23C may pass through the inside of the outlet joint 29 and flow out.

[0101] When a part of the outlet joint 29 is inserted into the outlet 22 , the internal flow path formed inside the outlet joint 29 can communicate with the outlet flow path 23C, and the outlet joint 29 can serve as the outlet 22 .

[0102] The first cooling water jacket 2 may be located between the first control plate 5 and the second control plate 7 , and may cool the first control plate 5 and the second control plate 7 simultaneously.

[0103] The first flow valve 3 can adjust the cooling water flow path 23 of the first cooling water jacket 2 .

[0104] The first flow valve 3 may be disposed on the first cooling water jacket 2 .

[0105] The first flow valve 3 may be disposed closer to the inlet 21 of the inlet 21 and the outlet 22 of the first cooling water jacket 2, and may adjust the outlet opening of the inlet 21 or the outlet opening of the inlet joint 28. That is, the first flow valve 3 may be a flow regulating valve for adjusting the flow of cooling water.

[0106] The first flow valve 3 may be disposed inside the first control unit 1 , and the first control unit 1 may be a valve-built-in control unit.

[0107] The first flow valve 3 may include a valve cover 31 and a valve body 32 .

[0108] The valve cover 31 may be disposed inside the first housing 4 or inside the second housing 6 .

[0109] A space for accommodating the valve body 32 may be formed inside the valve cover 31 .

[0110] When the valve cover 31 is disposed on the upper portion of the first cooling water jacket 2 , the valve cover 31 may be accommodated in the space S1 formed inside the first housing 4 and may pass through the through hole 51 formed in the first control plate 5 .

[0111] When the valve cover 31 is disposed at the lower portion of the first cooling water jacket 2 , the valve cover 31 may be accommodated in the space S2 formed inside the second housing 6 and may pass through the through hole 71 formed in the second control plate 7 .

[0112] The valve body 32 may be arranged to rise and fall inside the valve housing 31 and the cooling water flow path 23 of the first cooling water jacket 2 .

[0113] When the valve housing 31 is disposed on the upper portion of the first cooling water jacket 2 , the valve body 32 can be raised and inserted into the space of the valve housing 31 , and can be lowered and positioned in the cooling water flow path 23 .

[0114] When the valve cover 31 is disposed at the lower portion of the first cooling water jacket 2 , the valve body 32 can be raised to be located in the cooling water flow path 23 , and can be lowered to be inserted into the space of the valve cover 31 .

[0115] The first flow valve 3 may further include a driving source (not shown). The driving source may enable the valve body 32 to rise and fall.

[0116] As an example of the driving source, a motor having a rotating shaft may be included. As an example of the driving source, a power transmission member such as a worm gear and a worm wheel for converting the rotational motion of the rotating shaft into the reciprocating motion of the valve body 32 may be included.

[0117] The driving source can adjust the opening of the cooling water flow path 23, especially the inlet flow path 23B, by adjusting the height of the valve body 32. The driving source can adjust the height of the valve body 32 in multiple stages, and the first flow valve 3 can be an opening regulating valve or a flow regulating valve.

[0118] The driving source may be connected to one of the first control board 5 or the second control board 7 by means of electric wires or the like, and the driving source may be controlled by the first control board 5 or the second control board 7 .

[0119] When the valve housing 31 is disposed on the upper portion of the first cooling water jacket 2 , the driving source can be electrically connected to the first control board 5 , and the driving source can be controlled by the first control board 5 .

[0120] When the valve housing 31 is disposed at the lower portion of the first cooling water jacket 2 , the driving source can be electrically connected to the second control board 7 , and the driving source can be controlled by the second control board 7 .

[0121] The first housing 4 may be disposed on the upper side of the first cooling water jacket 2. A space S1 (upper space) for accommodating the first control board 5 may be formed inside the first housing 4.

[0122] The first housing 4 may be a top housing of the first control unit 1. The first housing 4 may form a top surface appearance of the first control unit 1.

[0123] The bottom surface of the first housing 4 may be open.

[0124] The edge of the first shell 4 can be assembled with the upper rib 25 a and can be placed on the top surface of the first cooling water jacket 2 .

[0125] The first housing 4 can be coupled to the first cooling water jacket 2 using a fastening member such as a screw or a hook.

[0126] The first control panel 5 may be accommodated in a space S1 formed between the first cooling water jacket 2 and the first housing 4 .

[0127] At least one of the first control plate 5 and the second control plate 7 may be formed with a through hole 51 or 71 through which the valve cover 31 of the first flow valve 3 passes.

[0128] An upper through hole 51 may be formed in the first control plate 5 , and a lower through hole 71 may be formed in the second control plate 7 . The valve cover 31 may pass through one of the upper through hole 51 and the lower through hole 71 .

[0129] As an example of the first control board 5, it can be an automatic driving board of the vehicle. The first control board 5 can include a semiconductor chip 52 such as an MCU that can implement automatic driving of the vehicle. The first control board 5 can be a level 2 automatic driving control board that can implement level 2 semi-automatic driving.

[0130] The first control board 5 may be configured with a temperature sensor capable of detecting the temperature of the first control board 5 , especially the temperature of the substrate or the temperature of the semiconductor chip 52 , and may output a control signal to the driving source of the first flow valve 3 according to the temperature detected by the temperature sensor.

[0131] The second housing 6 may be disposed at the lower side of the first cooling water jacket 2. A space S2 (ie, a lower space) for accommodating the second control board 7 may be formed inside the second housing 6.

[0132] The second housing 6 may be a bottom housing of the first control unit 1. The second housing 6 may form a bottom appearance of the first control unit 1.

[0133] The top surface of the second housing 6 may be open.

[0134] The frame of the second shell 6 may be assembled with the lower rib 25 b and may contact the bottom surface of the first cooling water jacket 2 .

[0135] The second housing 6 can be coupled to the first cooling water jacket 2 using a fastening member such as a screw or a hook.

[0136] The second control board 7 may be accommodated in a space S2 formed between the first cooling water jacket 2 and the second housing 6 .

[0137] The second control plate 7 may be separated from the first control plate 5 in the upper and lower directions with the first cooling water jacket 2 in the middle.

[0138] An example of the second control board 7 may be an infotainment board of the vehicle. The second control board 7 may include a semiconductor chip 72 such as an MCU for controlling media such as audio and video provided in the vehicle.

[0139] The second control board 7 may be configured with a temperature sensor capable of detecting the temperature of the second control board 7 , especially the temperature of the substrate or the temperature of the semiconductor chip 72 , and may output a control signal to the driving source of the first flow valve 3 according to the temperature detected by the temperature sensor.

[0140] The first control unit 1 may further include a thermal pad (not shown, hereinafter referred to as a first thermal pad) disposed between the top surface of the first cooling water jacket 2 and the bottom surface of the first control board 5 .

[0141] The bottom surface of the first control board 5 or the semiconductor chip 52 provided to the first control board 5 may be in direct contact with the top surface of the first cooling water jacket 2, or may be in thermal contact with the top surface of the first cooling water jacket 2 by using a first thermal pad.

[0142] The first control unit 1 may further include a thermal pad (not shown, referred to as a second thermal pad) disposed between the bottom surface of the first cooling water jacket 2 and the top surface of the second control board 7 .

[0143] The top surface of the second control board 7 or the semiconductor chip 72 provided to the second control board 7 may be in direct contact with the bottom surface of the first cooling water jacket 2 or may be in thermal contact with the bottom surface of the first cooling water jacket 2 using a second thermal pad.

[0144] Figure 5 is a perspective view of another example of the electronic control unit of this embodiment, Figure 6 is a partially cutaway perspective view of another example of the electronic control unit of this embodiment, Figure 7 yes Figure 5 An exploded perspective view of an example of a second control unit shown in FIG. Figure 8 yes Figure 7 An exploded perspective view of the second cooling water jacket is shown.

[0145] In another example of the electronic control unit of this embodiment, at least one control unit may be provided in plural, and the plural control units may include a first control unit 1 and a second control unit 101 arranged on the upper side or the lower side of the first control unit 1 .

[0146] The first control unit 1 may be a basic module, and may be a module basically installed on the vehicle.

[0147] The second control unit 101 may be an expansion module expanded from the basic module, and may be additionally installed according to the design structure of the vehicle.

[0148] The first control unit 1 and the second control unit 101 may be stacked along the up-down direction Z.

[0149] The first control unit 1 may be the same as the first control unit 1 as an example of the electronic control unit of the present embodiment. In order to avoid repeated description, the same reference numerals are used and the description thereof is omitted below.

[0150] The second control unit 101 may be an upper control unit disposed on the upper side of the first control unit 1 , or may be a lower control unit disposed on the lower side of the first control unit 1 .

[0151] The second control unit 101 may include a second cooling water jacket 102 , a second flow valve 103 , a third housing 104 and a third control board 105 .

[0152] An example of the second control unit 101 may be an automatic driving control unit capable of implementing conditional automation of level 3 among the automatic driving levels.

[0153] The second cooling water jacket 102 may be a cooling water jacket capable of cooling the third control board 105 in a water-cooling manner on the upper side or the lower side of the third control board 105 .

[0154] The second cooling water jacket 102 may be disposed on the upper side of the first control unit 1 and may be disposed on the lower side of the third control board 105 , and may dissipate heat for the third control board 105 and the first control board 5 between the first control unit 1 and the third control board 105 .

[0155] The second cooling water jacket 102 may be disposed at the lower side of the first control unit 1 , and may be disposed at the upper side of the third control board 105 , and may dissipate heat for the third control board 105 and the second control board 7 between the first control unit 1 and the third control board 105 .

[0156] An inlet 121 and an outlet 122 may be formed in the second cooling water jacket 102 , and a cooling water flow path 123 and cooling fins 124 for cooling water to pass through may be formed inside the second cooling water jacket 102 .

[0157] The second cooling water jacket 102 can be arranged side by side with the first cooling water jacket 2 of the first control unit 1. The inlet 121, outlet 122, cooling water flow path 123 and cooling fins 124 of the second cooling water jacket 102 can be the same as the inlet 21, outlet 22, cooling water flow path 23 and cooling fins 24 of the first cooling water jacket 2. In order to avoid repeated description, detailed description thereof is omitted.

[0158] The second cooling water jacket 102 may be spaced apart from the first cooling water jacket 2 along the up-down direction Z.

[0159] Similar to the first cooling water jacket 2 , the second cooling water jacket 102 may include a jacket body 125 (hereinafter referred to as the second jacket body) and a cover 126 (hereinafter referred to as the second cover).

[0160] like Figure 8 As shown, an inlet 121 , an outlet 122 , a cooling water flow path 123 , and cooling fins 124 may be formed in the second jacket body 125 .

[0161] Similar to the cooling water flow path 23 of the first cooling water jacket 2 , the cooling water flow path 123 may include a plurality of unit flow paths 123A, an inlet flow path 123B, and an outlet flow path 123C.

[0162] The cooling fins 124 may be provided in plural numbers, and the plural cooling fins 124 may be spaced apart from each other in the width direction Y of the second jacket body 125. The cooling water flow path 123 may be divided into a plurality of unit flow paths 123A by the plurality of cooling fins 124. The plurality of unit flow paths 123A may be arranged side by side.

[0163] An inlet flow path 123B for distributing the cooling water supplied from the inlet 121 to the plurality of unit flow paths 123A may be formed between the inlet 121 and the cooling fins 124 .

[0164] An outlet flow path 123C may be formed between the outlet 122 and the cooling fin 124 to merge the cooling water flowing through the plurality of unit flow paths 123A.

[0165] An upper rib 125a (see FIG. 125b ) for assembling the third housing 104 may be protruded from the top surface of the second jacket body 125. Figure 7 and Figure 8 ).

[0166] The bottom surface of the second jacket body 125 may be formed with an opening 125c (see Figure 8 ).

[0167] The second cover 126 may cover the cooling water flow path 123 and the cooling fins 124. The second cover 126 may be disposed on the second jacket body 125 to cover the opening 125c.

[0168] The second cover 126 can be fastened to the second jacket body 125 using a fastening member such as a screw or a hook.

[0169] The second cooling water jacket 102 may have a valve hole 127 formed therein, through which the valve body 132 of the second flow valve 103 passes.

[0170] The valve hole 127 may be formed at a position closer to the inlet 121 among the inlet 121 and the outlet 122 .

[0171] The valve hole 127 may be open toward the inlet flow path 123B in the up-down direction.

[0172] As an example, the valve hole 127 may be formed in the top plate of the second jacket body 125 and face the top surface of the second cover 126. As another example, the valve hole 127 may be formed in the second cover 126 and face the bottom surface of the top plate of the second jacket body 125.

[0173] The second cooling water jacket 102 may include an inlet connection 128 and an outlet connection 129 .

[0174] A portion of the inlet joint 128 may be inserted into the inlet 121. In this case, the cooling water may flow into the inlet flow path 123B after passing through the inside of the inlet joint 128.

[0175] When a portion of the inlet joint 128 is inserted into the inlet 121 , the internal flow path formed inside the inlet joint 128 may communicate with the inlet flow path 123B, and the inlet joint 128 may be the inlet 121 .

[0176] A portion of the outlet joint 129 may be inserted into the outlet 122. In this case, the cooling water in the outlet flow path 123C may pass through the inside of the outlet joint 129 and flow out.

[0177] When a portion of the outlet joint 129 is inserted into the outlet 122 , the internal flow path formed inside the outlet joint 129 can communicate with the outlet flow path 123C, and the outlet joint 129 can serve as the outlet 122 .

[0178] The second flow valve 103 can adjust the cooling water flow path 123 of the second cooling water jacket 102 .

[0179] The second flow valve 103 may include a valve cover 131 and a valve body 132 .

[0180] The valve cover 131 may be disposed inside the third housing 104 .

[0181] A space for accommodating the valve body 132 may be formed inside the valve cover 131 .

[0182] The valve cover 131 may be accommodated in a space S3 formed inside the third housing 104 , and may pass through a through hole 151 formed in the third control board 105 .

[0183] The valve body 132 may be configured to rise and fall inside the valve housing 131 and the cooling water flow path 123 of the second cooling water jacket 102 .

[0184] When the valve cover 131 is disposed on the upper portion of the second cooling water jacket 102 , the valve body 132 can be raised and inserted into the space of the valve cover 131 , and can be lowered and positioned in the cooling water flow path 123 .

[0185] When the valve cover 131 is disposed at the lower portion of the second cooling water jacket 102 , the valve body 132 can be raised to be located in the cooling water flow path 123 , and can be lowered to be inserted into the space of the valve cover 131 .

[0186] The second flow valve 103 may further include a driving source (not shown). The driving source may enable the valve body 132 to rise and fall.

[0187] An example of the driving source may include a motor having a rotating shaft. An example of the driving source may include a power transmission member such as a worm gear and a worm wheel that converts the rotational motion of the rotating shaft into the reciprocating motion of the valve body 132 .

[0188] The driving source can adjust the opening of the cooling water flow path 123, especially the inlet flow path 123B, by adjusting the height of the valve body 132. The driving source can adjust the height of the valve body 132 in multiple stages, and the second flow valve 103 can be an opening regulating valve or a flow regulating valve.

[0189] The driving source may be connected to the third control board 105 by means of electric wires or the like, and the driving source may be controlled by the third control board 105 .

[0190] The third housing 104 may cover the third control board 105. The third housing 104 may be disposed on an upper side of the second cooling water jacket 102.

[0191] The third housing 104 may be disposed on the upper side or the lower side of the second cooling water jacket 102. A space S3 for accommodating the third control board 105 may be formed inside the third housing 104.

[0192] In the case where the third housing 104 is disposed on the upper side of the second cooling water jacket 102, the third housing 104 may be a top housing of the electronic control unit. The third housing 104 may form the top surface appearance of the electronic control unit. The bottom surface of the third housing 104 may be open. The frame of the third housing 104 may be assembled with the upper rib 125a of the second cooling water jacket 102 and may be placed on the top surface of the second cooling water jacket 102.

[0193] In the case where the third housing 104 is disposed on the lower side of the second cooling water jacket 102, the third housing 104 may be a bottom housing of the electronic control unit. The third housing 104 may form the bottom appearance of the electronic control unit. The top surface of the third housing 104 may be open. The frame of the third housing 104 may be assembled with the lower rib (not shown) of the second cooling water jacket 102 and may contact the bottom surface of the second cooling water jacket 102.

[0194] The third housing 104 may be coupled to the second cooling water jacket 102 using a fastening member such as a screw or a hook.

[0195] The third control plate 105 may be disposed on the second cooling water jacket 102. The third control plate 105 may be disposed on the top surface or the bottom surface of the second cooling water jacket 102.

[0196] The third control board 105 may be accommodated in a space S3 formed between the second cooling water jacket 102 and the third housing 104 .

[0197] The third control plate 105 may have a through hole 151 formed therein, through which the valve cover 131 of the second flow valve 103 passes.

[0198] As an example of the third control board 105, it can be an automatic driving board of the vehicle. The third control board 105 can include a semiconductor chip 152 such as an MCU that can implement automatic driving of the vehicle. The third control board 105 can be a level 3 automatic driving control board that can implement level 3 conditional automation.

[0199] The third control board 105 can communicate with the first control board 5 , and when level 3 autonomous driving is performed, the semiconductor chip 52 of the first control board 5 and the semiconductor chip 152 of the third control board 105 can perform operations for level 3 autonomous driving together.

[0200] The third control board 105 may be provided with a temperature sensor capable of detecting the temperature of the third control board 105 , especially the temperature of the substrate or the temperature of the semiconductor chip 152 , and a control signal may be output to the driving source of the second flow valve 103 according to the temperature detected by the temperature sensor.

[0201] During level 3 automatic driving, the first control board 5 can output a control signal to the driving source of the first flow valve 3 according to the temperature detected by the temperature sensor installed on the first control board 5, and the third control board 105 can output a control signal to the driving source of the second flow valve 103 according to the temperature detected by the temperature sensor installed on the third control board 105.

[0202] The second control unit 101 may further include a thermal pad (hereinafter referred to as a third thermal pad) disposed between the second cooling water jacket 102 and the third control board 105 .

[0203] The second control unit 101 preferably allows the cooling water flowing in the second cooling water jacket 102 to cool the first control board 5 of the first control unit 1 and the third control board 105 of the second control unit 101 at the same time. Therefore, the second control unit 101 is preferably arranged on the upper side of the first control unit 1.

[0204] like Figure 6 As shown, the second cooling water jacket 102 of the second control unit 101 is preferably arranged on the upper side of the first shell 4, the third control board 105 is in direct contact with the top surface of the second cooling water jacket 102, or is in thermal contact with the top surface of the second cooling water jacket 102 through a third thermal pad, and the third shell 104 is preferably arranged on the upper side of the second cooling water jacket 102.

[0205] Another example of the electronic control unit of this embodiment may further include an inlet manifold 180 and an outlet manifold 190 .

[0206] The inlet manifold 180 may be connected to the inlet 21 of the first cooling water jacket 2 and the inlet 121 of the second cooling water jacket 102 , respectively.

[0207] When a portion of the inlet joint 28 is inserted into the inlet 21 of the first cooling water jacket 2 and a portion of the inlet joint 128 is inserted into the inlet 121 of the second cooling water jacket 102 , the inlet manifold 180 may be connected to the inlet joint 28 of the first cooling water jacket 2 and the inlet joint 128 of the second cooling water jacket 102 .

[0208] The outlet manifold 190 may be connected to the outlet 22 of the first cooling water jacket 2 and the outlet 122 of the second cooling water jacket 102 , respectively.

[0209] When a portion of the outlet joint 29 is inserted into the outlet 22 of the first cooling water jacket 2 and a portion of the outlet joint 129 is inserted into the outlet 122 of the second cooling water jacket 102 , the outlet manifold 190 can be connected to the outlet joint 29 of the first cooling water jacket 2 and the outlet joint 129 of the second cooling water jacket 102 , respectively.

[0210] Fig. 9 is a perspective view of another example of the electronic control unit of this embodiment, Fig.10 is a partially cutaway perspective view of another example of the electronic control unit of this embodiment, Fig.11 yes Fig. 9 An exploded perspective view of an example of a third control unit shown in FIG. Fig.12 yes Fig.11 An exploded perspective view of the third cooling water jacket is shown.

[0211] In another example of the electronic control unit of this embodiment, at least one control unit may be provided in plurality, and the plurality of control units may include a first control unit 1, a second control unit 101 arranged on the upper side of the first control unit 1, and a third control unit 201 arranged on the lower side of the first control unit 1.

[0212] The first control unit 1 may be a basic module, and may be a module basically installed in the vehicle.

[0213] The second control unit 101 and the third control unit 201 may be expansion modules extended from the basic module and may be additionally installed according to the design structure of the vehicle.

[0214] The first control unit 1 , the second control unit 101 , and the third control unit 201 may be stacked along the up-down direction Z.

[0215] The first control unit 1 may be arranged between the second control unit 101 and the third control unit 201 .

[0216] The first control unit 1 may be the same as the first control unit 1 as an example of the electronic control unit of the present embodiment. In order to avoid repeated description, the same reference numerals are used and the description thereof is omitted below.

[0217] The second control unit 101 may be the same as the second control unit 101 of another example of the electronic control unit of this embodiment. In order to avoid repeated description, the same reference numerals are used and the description thereof is omitted below.

[0218] The second control unit 101 and the third control unit 201 may each include a cooling water jacket formed with a cooling water flow path for cooling water to pass through, and a flow valve for opening and closing the cooling water flow path.

[0219] The third control unit 201 may be spaced apart from the second control unit 101 in the up-and-down direction.

[0220] The third control unit 201 may be a lower control unit disposed at a lower side of the first control unit 1 .

[0221] The third control unit 201 may include a third cooling water jacket 202 , a third flow valve 203 , a fourth housing 204 , and a fourth control board 205 .

[0222] An example of the third control unit 201 may be an automatic driving control unit that can implement highly automated driving at level 4 of the automatic driving levels.

[0223] The third cooling water jacket 202 may be a cooling water jacket capable of cooling the fourth control plate 205 by water cooling on the upper side of the fourth control plate 205 .

[0224] The third cooling water jacket 202 may be disposed at the lower side of the first control unit 1 , may be disposed at the upper side of the fourth control board 205 , and may dissipate heat for the second control board 7 and the fourth control board 205 between the first control unit 1 and the fourth control board 205 .

[0225] An inlet 221 and an outlet 222 may be formed in the third cooling water jacket 202 , and a cooling water flow path 223 and cooling fins 224 for cooling water to pass through may be formed inside the third cooling water jacket 202 .

[0226] The third cooling water jacket 202 can be arranged side by side with the first cooling water jacket 2 of the first control unit 1. The inlet 221, outlet 222, cooling water flow path 223 and cooling fins 224 of the third cooling water jacket 202 can be the same as the inlet 21, outlet 22, cooling water flow path 23 and cooling fins 24 of the first cooling water jacket 2. In order to avoid repeated description, detailed description thereof is omitted.

[0227] The third cooling water jacket 202 may be spaced apart from the first cooling water jacket 2 along the up-down direction Z.

[0228] Similar to the first cooling water jacket 2 , the third cooling water jacket 202 may include a jacket body 225 (hereinafter referred to as the third jacket body) and a cover 226 (hereinafter referred to as the third cover).

[0229] like Fig.12 As shown, the third jacket body 225 may be formed with an inlet 221 , an outlet 222 , a cooling water flow path 223 , and cooling fins 224 .

[0230] Similar to the cooling water flow path 23 of the first cooling water jacket 2 , the cooling water flow path 223 may include a plurality of unit flow paths 223 a , an inlet flow path 223 b , and an outlet flow path 223 c .

[0231] The cooling fins 224 may be provided in plural numbers, and the plural cooling fins 224 may be spaced apart from each other in the width direction Y of the third jacket body 225. The cooling water flow path 223 may be divided into a plurality of unit flow paths 223a by the plurality of cooling fins 224. The plurality of unit flow paths 223a may be arranged side by side.

[0232] An inlet flow path 223 b for distributing the cooling water supplied from the inlet 221 to the plurality of unit flow paths 223 a may be formed between the inlet 221 and the cooling fins 224 .

[0233] An outlet flow path 223 c for merging cooling water flowing through a plurality of unit flow paths 223 a may be formed between the outlet 222 and the cooling fin 224 .

[0234] A lower rib 225a (see FIG. 225A ) for assembling the fourth housing 204 may be protruded from the bottom surface of the third jacket body 225. Fig.11 and Fig.12 ).

[0235] The top surface of the third jacket body 225 may be formed with an opening 225c (see Fig.12 ).

[0236] The third cover 226 may cover the cooling water flow path 223 and the cooling fins 224. The third cover 226 may be disposed on the third jacket body 225 to cover the opening 225c.

[0237] The third cover 226 can be fastened to the third jacket body 225 using a fastening member such as a screw or a hook.

[0238] The third cooling water jacket 202 may have a valve hole 227 formed therein, through which the valve body 232 of the third flow valve 203 passes.

[0239] The valve hole 227 may be formed at a position closer to the inlet 221 among the inlet 221 and the outlet 222 .

[0240] The valve hole 227 may be open in the up-down direction toward the inlet flow path 223 b.

[0241] As an example, the valve hole 227 may be formed in the bottom plate of the third jacket body 225 and may face the third cover 226. As another example, the valve hole 227 may be formed in the third cover 226 and may face the bottom surface of the bottom plate of the third jacket body 225.

[0242] The third cooling water jacket 202 may include an inlet connection 228 and an outlet connection 229 .

[0243] A portion of the inlet joint 228 may be inserted into the inlet 221. In this case, the cooling water may flow into the inlet flow path 223b after passing through the inside of the inlet joint 228.

[0244] When a portion of the inlet joint 228 is inserted into the inlet 221 , the internal flow path formed inside the inlet joint 228 may communicate with the inlet flow path 223 b , and the inlet joint 228 may be the inlet 221 .

[0245] A portion of the outlet joint 229 may be inserted into the outlet 222. In this case, the cooling water in the outlet flow path 223c may pass through the inside of the outlet joint 229 and flow out.

[0246] When a portion of the outlet joint 229 is inserted into the outlet 222 , the internal flow path formed inside the outlet joint 229 can communicate with the outlet flow path 223 c , and the outlet joint 229 can be the outlet 222 .

[0247] The third flow valve 203 can adjust the cooling water flow path 223 of the third cooling water jacket 202 .

[0248] The third flow valve 203 may include a valve cover 231 and a valve body 232 .

[0249] The valve cover 231 may be disposed inside the fourth housing 204 .

[0250] A space for accommodating the valve body 232 may be formed inside the valve cover 231 .

[0251] The valve cover 231 may be accommodated in a space S4 formed inside the fourth housing 204 , and may pass through a through hole 251 formed in the fourth control board 205 .

[0252] The valve body 232 may be configured to be raised and lowered inside the valve housing 231 and the cooling water flow path 223 of the third cooling water jacket 202 .

[0253] When the valve cover 231 is disposed at the lower portion of the third cooling water jacket 202 , the valve body 232 can be raised to be located in the cooling water flow path 223 , and can be lowered to be inserted into the space of the valve cover 231 .

[0254] The third flow valve 203 may further include a driving source (not shown). The driving source may enable the valve body 232 to rise and fall.

[0255] As an example of the driving source, a motor having a rotating shaft may be included. As an example of the driving source, a power transmission member such as a worm gear and a worm wheel that converts the rotational motion of the rotating shaft into the reciprocating motion of the valve body 232 may also be included.

[0256] The driving source can adjust the opening of the cooling water flow path 223, especially the inlet flow path 223b, by adjusting the height of the valve body 232. The driving source can adjust the height of the valve body 232 in multiple stages, and the third flow valve 203 can be an opening regulating valve or a flow regulating valve.

[0257] The driving source may be connected to the fourth control board 205 by means of electric wires or the like, and the driving source may be controlled by means of the fourth control board 205 .

[0258] The fourth housing 204 may cover the fourth control board 205. The fourth housing 204 may be disposed on the lower side of the third cooling water jacket 202.

[0259] A space S4 for accommodating the fourth control board 205 may be formed inside the fourth housing 204 .

[0260] In the case where the fourth housing 204 is disposed on the lower side of the third cooling water jacket 202, the fourth housing 204 may be a bottom housing of the electronic control unit. The fourth housing 204 may form the bottom appearance of the electronic control unit. The top surface of the fourth housing 204 may be open. The frame of the fourth housing 204 may be assembled with the lower rib 225a of the third cooling water jacket 202 and may contact the bottom surface of the third cooling water jacket 202.

[0261] The fourth housing 204 may be coupled to the third cooling water jacket 202 using a fastening member such as a screw or a hook.

[0262] The fourth control plate 205 may be disposed on the third cooling water jacket 202. The fourth control plate 205 may be disposed on the bottom surface of the third cooling water jacket 202.

[0263] The fourth control board 205 may be accommodated in a space S4 formed between the third cooling water jacket 202 and the fourth housing 204 .

[0264] The fourth control plate 205 may include a through hole 251 through which the valve cover 231 of the third flow valve 203 passes.

[0265] As an example of the fourth control board 205, it can be an automatic driving board of the vehicle. The fourth control board 205 can include a semiconductor chip 252 such as an MCU that can implement automatic driving of the vehicle. The fourth control board 205 can be a level 4 automatic driving control board that can implement level 4 highly automated driving.

[0266] The fourth control board 205 can communicate with at least one of the first control board 5 and the third control board 105. During level 4 autonomous driving, at least one of the semiconductor chip 52 of the first control board 5 and the semiconductor chip 152 of the third control board 105 and the semiconductor chip 252 of the fourth control board 205 can simultaneously perform operations for level 4 autonomous driving.

[0267] The fourth control board 205 may be provided with a temperature sensor capable of detecting the temperature of the fourth control board 205 , especially the temperature of the substrate or the temperature of the semiconductor chip 252 , and a control signal may be output to the driving source of the third flow valve 203 according to the temperature detected by the temperature sensor.

[0268] During level 4 automatic driving, the first control board 5 can output a control signal to the driving source of the first flow valve 3 according to the temperature detected by the temperature sensor arranged on the first control board 5, the third control board 105 can output a control signal to the driving source of the second flow valve 103 according to the temperature detected by the temperature sensor arranged on the third control board 105, and the fourth control board 205 can output a control signal to the driving source of the third flow valve 203 according to the temperature detected by the temperature sensor arranged on the fourth control board 205.

[0269] The third control unit 201 may further include a thermal pad (hereinafter referred to as a fourth thermal pad) disposed between the third cooling water jacket 202 and the fourth control board 205 .

[0270] The third control unit 201 preferably allows the cooling water flowing in the third cooling water jacket 202 to cool the second control board 7 of the first control unit 1 and the fourth control board 205 of the third control unit 201 at the same time. Therefore, the third control unit 201 is preferably arranged at the lower side of the first control unit 1.

[0271] Another example of the electronic control unit of this embodiment may further include an inlet manifold 180 ′ and an outlet manifold 190 ′.

[0272] The inlet manifold 180 ′ may be connected to the inlet 21 of the first cooling water jacket 2 , the inlet 121 of the second cooling water jacket 102 , and the inlet 221 of the third cooling water jacket 202 , respectively.

[0273] When a portion of the inlet joint 28 is inserted into the inlet 21 of the first cooling water jacket 2, a portion of the inlet joint 128 is inserted into the inlet 121 of the second cooling water jacket 102, and a portion of the inlet joint 228 is inserted into the inlet 221 of the third cooling water jacket 202, the inlet manifold 180' can be connected to the inlet joint 28 of the first cooling water jacket 2, the inlet joint 128 of the second cooling water jacket 102, and the inlet joint 228 of the third cooling water jacket 202.

[0274] The outlet manifold 190 ′ may be connected to the outlet 22 of the first cooling water jacket 2 , the outlet 122 of the second cooling water jacket 102 , and the outlet 222 of the third cooling water jacket 202 , respectively.

[0275] When a portion of the outlet joint 29 is inserted into the outlet 22 of the first cooling water jacket 2, a portion of the outlet joint 129 is inserted into the outlet 122 of the second cooling water jacket 102, and a portion of the outlet joint 229 is inserted into the outlet 222 of the third cooling water jacket 302, the outlet manifold 190' can be connected to the outlet joint 29 of the first cooling water jacket 2, the outlet joint 129 of the second cooling water jacket 102, and the outlet joint 229 of the third cooling water jacket 202, respectively.

[0276] In this embodiment, each of the multiple control units 1, 101, 201 forms a cooling water flow path for the movement of cooling water, and cooling fins parallel to the movement direction of the cooling water are provided in the cooling water flow path to promote heat conduction. After the cooling water flows into each cooling water flow path, the cooling function can be performed on the first control board 5, the second control board 7, the third control board 105 and the fourth control board 205 which are the main heat sources.

[0277] After the cooling function is performed, the cooling water with increased temperature can be gathered and flow out to the outside of the electronic control unit.

[0278] The flow valve installed in the inlet flow path of each of the multiple control units 1, 101, 201 can receive signals from the MCU built into the control board of each control unit and actively control the flow so that the high-heat generating components of the control unit will not exceed the allowable temperature.

[0279] Depending on the type of function executed, the operating rates of multiple control units 1, 101, and 201 may be different. When there is a deviation in the heat generation between the control units, the flow rate of the low-heat generation control unit can be reduced and the flow rate of the high-heat generation control unit can be increased by controlling the flow valve, thereby performing a more efficient cooling function.

[0280] Fig.13 yes Fig.10 An enlarged view of the full flow valve is shown when open.

[0281] The first control board 5 , the third control board 105 and the fourth control board 205 can respectively control the driving source of the first flow valve 3 , the driving source of the second flow valve 103 and the driving source of the third flow valve 203 according to the temperatures detected by the temperature sensors respectively provided thereto.

[0282] If the temperatures detected by the temperature sensors respectively provided to the first control board 5, the third control board 105 and the fourth control board 205 are all above the cooling set temperature, the first control board 5 can control the driving source of the first flow valve 3 to the open mode, the third control board 105 can control the driving source of the second flow valve 103 to the open mode, and the fourth control board 205 can control the driving source of the third flow valve 203 to the open mode.

[0283] like Fig.13 As shown, the cooling water can be dispersed to the first cooling water jacket 2 , the second cooling water jacket 102 , and the third cooling water jacket 202 and flow, and cool the first control board 5 , the second control board 7 , the third control board 105 , and the fourth control board 205 at the same time.

[0284] Fig.14 yes Fig.10 An enlarged view of the first control unit is shown when it is heated.

[0285] If the temperature detected by the temperature sensor provided to the first control board 5 is above the cooling set temperature, and the temperatures detected by the temperature sensors provided to the third control board 105 and the fourth control board 205 respectively are both lower than the cooling set temperature, the first control board 5 can control the driving source of the first flow valve 3 to the open mode, the third control board 105 can control the driving source of the second flow valve 103 to the closed mode, and the fourth control board 205 can control the driving source of the third flow valve 203 to the closed mode.

[0286] like Fig.14 As shown, the cooling water is supplied only to the first cooling water jacket 2 , but not to the second cooling water jacket 102 and the third cooling water jacket 202 , and the first control board 5 and the second control board 7 can be cooled.

[0287] Fig.15 yes Fig.10 An enlarged view of the second control unit is shown when it is heated.

[0288] If the temperature detected by the temperature sensor provided to the third control board 105 is above the cooling set temperature, and the temperatures detected by the temperature sensors provided to the first control board 5 and the fourth control board 205 respectively are both lower than the cooling set temperature, the first control board 5 can control the driving source of the first flow valve 3 to the closed mode, the third control board 105 can control the driving source of the second flow valve 103 to the open mode, and the fourth control board 205 can control the driving source of the third flow valve 203 to the closed mode.

[0289] like Fig.15 As shown, the cooling water is only supplied to the second cooling water jacket 102 , but not to the first cooling water jacket 2 and the third cooling water jacket 202 , and the third control board 105 and the first control board 5 can be cooled.

[0290] Fig.16 yes Fig.10 An enlarged view of the third control unit is shown when it is heated.

[0291] If the temperature detected by the temperature sensor provided to the fourth control board 205 is above the cooling set temperature, and the temperatures detected by the temperature sensors provided to the first control board 5 and the third control board 105 respectively are both lower than the cooling set temperature, the first control board 5 can control the driving source of the first flow valve 3 to the closed mode, the third control board 105 can control the driving source of the second flow valve 103 to the closed mode, and the fourth control board 205 can control the driving source of the third flow valve 203 to the open mode.

[0292] like Fig.16 As shown, the cooling water is only supplied to the third cooling water jacket 202 , but not to the first cooling water jacket 2 and the second cooling water jacket 102 , and the fourth control board 205 and the second control board 7 can be cooled.

[0293] Fig.17 This is a diagram of a case where the electronic control unit of this embodiment is cooled by a water-cooling type cooling device.

[0294] Fig.17 The water-cooling cooling device 300 shown can be connected to the electronic control unit to circulate cold cooling water in the electronic control unit.

[0295] The water-cooling type cooling device 300 may be connected to the electronic control unit by means of a water pipe.

[0296] The water-cooled cooling device 300 may include: a heat exchanger 301; a cooling water tank 303, which is connected to the heat exchanger 301 via a heat exchanger outlet pipe 302; a pump 305, which is connected to the cooling water tank 303 via a pump inlet pipe 304; and a pump outlet pipe 306, which connects the pump 305 and the electronic control unit; the electronic control unit and the heat exchanger 301 may be connected via a heat exchanger inlet pipe 307.

[0297] The heat exchanger 301 can dissipate the heat of the cooling water into the air in an air cooling manner.

[0298] The pump outlet pipe 306 may be connected to the inlet joint 28 as an example of an electronic control unit, the inlet manifold 180 as another example of an electronic control unit, or the inlet manifold 180 ′ as yet another example of an electronic control unit.

[0299] The heat exchanger inlet pipe 307 may be connected to the outlet joint 29 as an example of the electronic control unit, the outlet manifold 190 as another example of the electronic control unit, or the outlet manifold 190 ′ as yet another example of the electronic control unit.

[0300] The cooling water can circulate in the heat exchanger 301 and the electronic control unit to dissipate heat from the electronic control unit.

[0301] Fig.18 This is a diagram of a case where the electronic control unit and the motor of this embodiment are cooled by a water-cooling type cooling device.

[0302] Fig.18 The water-cooled cooling device 300 ′ shown may be connected to the electronic control unit and the motor 400 to circulate cold cooling water through the electronic control unit and the motor 400 .

[0303] As an example of the motor 400 , a drive motor which is provided in an electric vehicle and provides a driving force to wheels may be used.

[0304] The motor 400 may include a motor housing 403 formed with a cooling water inlet port 401 and a cooling water outlet port 402 .

[0305] The water-cooling type cooling device 300 ′ may be connected to the electronic control unit and the motor 400 by using a water pipe.

[0306] The water-cooled cooling device 300' may include: a heat exchanger 301; a cooling water tank 303, connected to the heat exchanger 301 via a heat exchanger outlet pipe 302; a pump 305, connected to the cooling water tank 303 via a pump inlet pipe 304; a pump outlet pipe 306, connecting the pump 305 and an electronic control unit; a connecting flow path 308', connecting the electronic control unit and the motor 400; and a heat exchanger inlet pipe 307', connecting the motor 400 and the heat exchanger 301.

[0307] The heat exchanger 301, the heat exchanger outlet piping 302, the cooling water tank 303, the pump inlet piping 304, the pump 305 and the pump outlet piping 306 are connected to the Fig.17 The water-cooling cooling device 300 shown is the same, and its description is omitted to avoid duplication.

[0308] The heat exchanger inlet pipe 307 ′ may be connected to the cooling water outlet port 402 of the motor 400 .

[0309] One end of the connection flow path 308' may be connected to an electronic control unit, and may be connected to an outlet connector 29 as an example of an electronic control unit, an outlet manifold 190 as another example of an electronic control unit, or an outlet manifold 190' as yet another example of an electronic control unit.

[0310] The other end of the connection flow path 308 ′ may be connected to the cooling water inlet port 401 of the motor 400 .

[0311] The cooling water may circulate through the heat exchanger 301 , the electronic control unit, and the motor 400 , and dissipate heat from the electronic control unit and the motor 400 in turn.

[0312] Fig.19 This is a diagram when the electronic control unit and the additional electronic control unit of this embodiment are cooled by a water-cooling type cooling device.

[0313] Fig.19 The water-cooling cooling device 300 ″ shown can be connected to the electronic control unit and the additional electronic control unit 500 to circulate cold cooling water in the electronic control unit and the additional electronic control unit 500 .

[0314] The additional electronic control unit 500 may include an additional cooling water jacket 503 formed with a cooling water inlet 501 and a cooling water outlet 502 .

[0315] As an example of the additional electronic control unit 500 , it may be an electronic control unit provided in addition to the electronic control unit, and may be an electronic control unit capable of cooling a plurality of additional control units 504 , 505 , and 506 by using one additional cooling water jacket 503 .

[0316] The water-cooling type cooling device 300 ″ can be connected to the electronic control unit and the additional electronic control unit 500 by using water piping.

[0317] The water-cooled cooling device 300" may include: a heat exchanger 301; a cooling water tank 303, connected to the heat exchanger 301 via a heat exchanger outlet pipe 302; a pump 305, connected to the cooling water tank 303 via a pump inlet pipe 304; a pump outlet pipe 306", connecting the pump 305 and an additional electronic control unit 500; a connecting flow path 308", connecting the electronic control unit and the additional electronic control unit 500; and a heat exchanger inlet pipe 307, connecting the electronic control unit and the heat exchanger 301.

[0318] The heat exchanger 301, the heat exchanger outlet piping 302, the cooling water tank 303, the pump inlet piping 304, the pump 305, and the heat exchanger inlet piping 307 are connected to the heat exchanger 301. Fig.17 The water-cooling cooling device 300 shown is the same, and its description is omitted to avoid duplication.

[0319] One end of the pump outlet pipe 306 ″ can be connected to the outlet of the pump 305 .

[0320] The other end of the pump outlet pipe 306 ″ may be connected to the cooling water inlet 501 of the additional electronic control unit 500 .

[0321] One end of the connecting flow path 308 ″ may be connected to the cooling water outlet 502 of the additional electronic control unit 500 .

[0322] The other end of the connecting flow path 308" may be connected to an inlet connector 28 as an example of an electronic control unit, or an inlet manifold 180 as another example of an electronic control unit, or an inlet manifold 180' as yet another example of an electronic control unit.

[0323] The cooling water may circulate through the heat exchanger 301 , the additional electronic control unit 500 , and the electronic control unit, and may dissipate heat from the additional electronic control unit 500 and the electronic control unit in sequence.

[0324] The cooling water can be moved in the flow path at a preset flow rate Q by the pump 305 . The cooling water can flow in from the inlet of the additional electronic control unit 500 , cool the heat source, and then flow out from the outlet.

[0325] The cooling water flowing out of the additional electronic control unit 500 can flow into the inlet of the electronic control unit of this embodiment, flow to the plurality of control units 1, 101, 201 connected in parallel, cool each unit and generate heat, then be re-gathered and flow out from the outlet of the electronic control unit.

[0326] The cooling water whose temperature rises due to the cooling function may pass through the heat exchanger 301 and drop to the initial temperature, and the cooling water whose temperature is initialized may be stored in the cooling water tank 303 .

[0327] The cooling water stored in the cooling water tank 303 may repeat the above process.

[0328] The above description is for the purpose of illustrating the technical concept of the present invention, and a person skilled in the art to which the present invention belongs may make various modifications and variations without departing from the essential characteristics of the present invention.

[0329] Therefore, the embodiments disclosed in the present invention are not intended to limit the technical idea of ​​the present invention but to explain the technical idea, and the scope of the technical idea of ​​the present invention is not limited by these embodiments.

[0330] The protection scope of the present invention should be interpreted by the appended claims, and all technical ideas within the scope equivalent thereto should be interpreted as being included in the scope of the present invention.

Claims

1. An electronic control unit, comprising at least one control unit, wherein: The at least one control unit comprises a first control unit, The first control unit comprises: A first cooling water jacket is formed with an inlet and an outlet, and has a cooling water flow path and cooling fins formed inside for cooling water to pass through; a first flow valve, regulating a cooling water flow path of the first cooling water jacket; A first shell, disposed on an upper side of the first cooling water jacket; a first control panel accommodated in a space formed between the first cooling water jacket and the first housing; a second shell, disposed on a lower side of the first cooling water jacket; and The second control board is accommodated in a space formed between the first cooling water jacket and the second shell.

2. The electronic control unit according to claim 1, wherein: The first cooling water jacket comprises: a first jacket body, formed with the inlet and the outlet, and formed with the cooling water flow path and the cooling fins; and The first cover is combined with the jacket body and covers the cooling water flow path and the cooling fins.

3. The electronic control unit according to claim 1, wherein: The first control unit further includes a thermal pad disposed between a top surface of the first cooling water jacket and a bottom surface of the first control board.

4. The electronic control unit according to claim 1, wherein: The first control unit further includes a thermal pad disposed between a bottom surface of the first cooling water jacket and a top surface of the second control board.

5. The electronic control unit according to claim 1, wherein: The first control board is the vehicle's automatic driving board, The second control panel is the vehicle's infotainment panel, The first control plate and the second control plate are separated vertically by the first cooling water jacket in the middle.

6. The electronic control unit according to claim 1, wherein: The first flow valve comprises: Valve cover; A valve body configured to rise and fall with the cooling water flow path of the first cooling water jacket inside the valve housing; and A driving source to raise and lower the valve body; A through hole through which the valve cover body penetrates is formed in at least one of the first control plate and the second control plate.

7. The electronic control unit according to claim 6, wherein: The first cooling water jacket has a valve hole formed therein through which the valve body passes.

8. The electronic control unit according to claim 1, wherein: The at least one control unit includes a second control unit arranged on an upper side or a lower side of the first control unit, The second control unit comprises: A second cooling water jacket is formed with an inlet and an outlet, and has a cooling water flow path and cooling fins formed inside for cooling water to pass through; a second flow valve, regulating a cooling water flow path of the second cooling water jacket; A third control panel, disposed on the second cooling water jacket; and The third housing covers the third control board.

9. The electronic control unit according to claim 8, wherein: The second cooling water jacket also includes: a second jacket body, formed with the inlet and the outlet, and formed with the cooling water flow path and the cooling fins; and The second cover covers the cooling water flow path and the cooling fins.

10. The electronic control unit according to claim 8, wherein: The second control unit also includes a thermal pad disposed between the second cooling water jacket and the third control board.

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