A water channel cooling structure for an automobile motor controller
By designing a water channel cooling structure that includes a mounting base, a heat dissipation mechanism, and a limiting block, the problems of coolant leakage and poor heat dissipation were solved, achieving stable heat dissipation and short-circuit protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WUXI BALANCE NEW ENERGY TECH CO LTD
- Filing Date
- 2025-07-17
- Publication Date
- 2026-06-05
AI Technical Summary
The coolant in existing automotive motor controllers is prone to leakage at the connection point with the controller, which can lead to short circuit risks and poor heat dissipation.
A water-cooling structure was designed, including a mounting base, a heat dissipation mechanism, threaded connectors, coolant delivery pipes, fastening bolts, fixing slots, and a connecting limit mechanism. Through the bolt connection and the cooperation of the limit block, the coolant is ensured to flow stably and make full contact with the controller to prevent leakage. At the same time, the heat sink and coolant are used to remove heat.
It achieves stable heat dissipation of the controller, prevents coolant leakage, reduces the risk of short circuit, and is simple to operate with high heat dissipation efficiency.
Smart Images

Figure CN224329822U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of motor controller cooling technology, and in particular to a water channel cooling structure for automotive motor controllers. Background Technology
[0002] The automotive motor controller (MCU) is one of the core components in the "three-electric" system (battery, motor, and electronic control) of new energy vehicles. It is mainly responsible for controlling the energy transmission between the power source and the drive motor. During actual use, the internal components of the motor controller will generate a lot of heat, which usually requires heat dissipation treatment.
[0003] Existing controller mounting base plates typically come with built-in cooling channels. During actual installation, the coolant can flow inside the channels to cool the controller. However, in actual use, the coolant needs to make full contact with the controller. This is usually achieved by connecting the controller to the housing with the channel cavity via bolts, allowing direct contact between the controller and the coolant. Over time, this can cause coolant leakage between the controller and the housing, potentially leading to short circuits. Therefore, we propose a channel cooling structure for automotive motor controllers. Utility Model Content
[0004] To address the aforementioned problems, this utility model provides a water cooling structure for automotive motor controllers, which can solve the problems existing in the background art.
[0005] This utility model provides the following technical solution: a water cooling structure for an automotive motor controller, comprising:
[0006] The mounting base has a mounting cavity at the top and symmetrical mounting grooves at the top, and receiving grooves at both the front and rear ends of the top.
[0007] A heat dissipation mechanism is bolted to the inside of the mounting cavity at the top of the mounting base;
[0008] A threaded connector is fixedly welded to the end of the through hole of the heat dissipation mechanism;
[0009] A coolant delivery pipe is fixedly installed at the end of the threaded connector;
[0010] Fastening bolts are movably located inside the end of the mounting base and connect the mounting base to the vehicle frame;
[0011] A retaining groove is provided at the end edge of the fastening bolt;
[0012] A connecting limiting mechanism is bolted to the inside of the top mounting cavity of the mounting base;
[0013] Furthermore, the heat dissipation mechanism includes a connecting end block, a connecting bottom box is fixedly connected to the end of the connecting end block, a connecting top box is welded to the top of the connecting bottom box, and a fixing through groove is provided on both the front and rear surfaces of the connecting bottom box.
[0014] Furthermore, the bottom end of the connecting top box is provided with several heat sinks at equal intervals.
[0015] Furthermore, both the threaded connector and the coolant delivery pipe are located inside the receiving groove at the top of the mounting base.
[0016] Furthermore, the connecting limiting mechanism includes a mounting base plate, a connecting seat fixedly connected to the top of the mounting base plate, a threaded rod movably connected inside the connecting seat via threads, a connecting turntable fixedly connected to one end of the threaded rod, a connecting push-pull end plate fixedly connected to the other end of the threaded rod, a movable sleeve block movably sleeved on the outer surface of the connecting push-pull end plate, a connecting mounting plate fixedly connected to the side of the movable sleeve block away from the connecting base, and a connecting limiting block fixedly connected to the side of the connecting mounting plate away from the movable sleeve block.
[0017] Furthermore, the mounting base plate is located inside the mounting groove at the top of the mounting frame and is connected by bolts.
[0018] Furthermore, the outer side of one side of the connecting limiting block slides and fits into the inner side of the fixing slot.
[0019] The beneficial effects of this utility model are:
[0020] 1. With its heat dissipation mechanism, it can contact the motor controller during use and absorb the controller's heat. The heat is then carried away by the flow of internal coolant, thus providing stable heat dissipation. At the same time, it can prevent coolant leakage and short circuits to the controller, and is easy to operate.
[0021] 2. Through the cooperation of the fastening bolts, fixing slots and connecting limiting mechanism, when the mounting base is installed on the car frame, the position of the fastening bolts can be restricted by the connecting limiting mechanism, so that the fastening bolts can be stably connected to the car frame, which is convenient to operate. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the overall structure of a water cooling structure for an automotive motor controller according to an embodiment of the present invention;
[0023] Figure 2 This is a schematic diagram of a fixing slot structure for a water channel cooling structure of an automotive motor controller according to an embodiment of this utility model;
[0024] Figure 3 This is a schematic diagram of a heat dissipation mechanism for a water channel cooling structure of an automotive motor controller, according to an embodiment of this utility model.
[0025] Figure 4 This is a schematic diagram of a heat sink structure for a water channel cooling structure of an automotive motor controller according to an embodiment of this utility model;
[0026] Figure 5 This is a schematic diagram of a connection limiting mechanism for a water channel cooling structure of an automotive motor controller, according to an embodiment of this utility model.
[0027] Explanation of reference numerals in the attached figures:
[0028] 1. Install the base frame;
[0029] 2. Heat dissipation mechanism; 21. Connecting end block; 22. Connecting bottom box; 23. Connecting top box; 24. Fixing through slot; 25. Heat sink;
[0030] 3. Threaded connectors;
[0031] 4. Coolant delivery pipeline;
[0032] 5. Tighten the bolts;
[0033] 6. Fixed slot;
[0034] 7. Connecting limit mechanism; 71. Mounting base plate; 72. Connecting seat; 73. Threaded rod; 74. Connecting turntable; 75. Connecting push-pull end plate; 76. Movable sleeve block; 77. Connecting mounting plate; 78. Connecting limit block. Detailed Implementation
[0035] The embodiments of this utility model will be further described below with reference to the accompanying drawings.
[0036] Example:
[0037] Reference Figure 1-5 This utility model provides a water cooling structure for an automotive motor controller, comprising:
[0038] The mounting base 1) has a mounting cavity at the top and mounting grooves symmetrically opened at the top, and receiving grooves are opened at both the front and rear ends of the top.
[0039] The heat dissipation mechanism 2) is bolted to the inside of the mounting cavity at the top of the mounting base 1);
[0040] Threaded connector 3), which is fixedly welded to the end of the through hole of heat dissipation mechanism 2);
[0041] Coolant delivery pipe 4), which is fixedly installed at the end of threaded connector 3);
[0042] Fastening bolt 5), which is movably located inside the end of the mounting base 1), and connects the mounting base 1) to the vehicle frame;
[0043] A fixing slot 6) is provided at the end edge of the fastening bolt 5);
[0044] The connecting limiting mechanism 7) is bolted to the top of the mounting cavity of the mounting base 1);
[0045] The heat dissipation mechanism 2) includes a connecting end block 21), the end of which is fixedly connected to a connecting bottom box 22), and a connecting top box 23 is welded to the top of the connecting bottom box 22). The front and rear surfaces of the connecting bottom box 22) are provided with fixed through grooves 24, which facilitate the delivery of coolant to the inside of the connecting bottom box 22) and the connecting top box 23 through the coolant delivery pipe 4), threaded connector 3) and fixed through grooves 24. This allows the connecting top box 23) to absorb the heat of the controller and then carry away the heat through the coolant, thereby dissipating heat and making the operation convenient.
[0046] The bottom of the top box 23) is provided with several heat sinks 25) at equal intervals, which facilitates the transfer of heat from the top box 23) to the interior of the heat sinks 25) when the top box 23) absorbs heat from the controller, so that the coolant can better carry away the heat and improve the heat dissipation efficiency.
[0047] The threaded connector 3) and the coolant delivery pipe 4) are both located inside the receiving groove at the top of the mounting base 1), which makes it easy for the threaded connector 3) and the coolant delivery pipe 4) to be stably positioned inside the receiving groove at the top of the mounting base 1, and is easy to operate.
[0048] The connecting limiting mechanism 7) includes a mounting base plate 71), a connecting seat 72) fixedly connected to the top of the mounting base plate 71), a threaded rod 73) movably connected to the inside of the connecting seat 72) via threads, a connecting turntable 74) fixedly connected to one end of the threaded rod 73), and a connecting push-pull end plate 75) fixedly connected to the other end of the threaded rod 73). A movable sleeve block 76) is movably sleeved on the outer surface of the connecting push-pull end plate 75), and a connecting mounting plate 77) is fixedly connected to the side of the movable sleeve block 76 away from the connecting seat 72). A connecting limit block 78) is fixedly connected to the side away from the movable sleeve block 76), which facilitates the rotation of the connecting turntable 74), driving the threaded rod 73) and the connecting push-pull end plate 75) to rotate. This allows the threaded rod 73) to move inside the connecting seat 72), driving the connecting push-pull end plate 75), movable sleeve block 76), connecting mounting plate 77) and connecting limit block 78) to move. This allows the connecting limit block 78) to stably engage inside the fixed slot 6), restricting and fixing the fastening bolt 5), making operation convenient.
[0049] The mounting base plate 71) is located inside the mounting groove at the top of the mounting base 1) and is connected by bolts, which makes it easy for the mounting base plate 71) to be stably installed and used on the top of the mounting base 1) and convenient to operate.
[0050] Among them, the outer side of the connecting limit block 78) slides and fits against the inner side of the fixing slot 6), which makes it easy for the connecting limit block 78) to be stably inserted into the inner side of the fixing slot 6), restricting the position of the fastening bolt 5), and making the operation convenient.
[0051] The working principle of this utility model is as follows: During use, the heat dissipation mechanism 2) is installed inside the mounting cavity at the top of the mounting base 1). Then, the motor controller is installed on the top of the mounting base 1), so that the controller and the top of the connecting top box 23) are in contact with each other, allowing the connecting top box 23) to make contact with the controller and transfer heat to the interior of the heat sink 25). Then, the coolant is transported through the coolant delivery pipe 4), threaded connector 3, connecting base box 22), and connecting top box 23), so that the coolant can carry away the heat when it flows, thereby achieving heat dissipation. At the same time, the fastening screws are tightened. When connecting bolt 5) to the frame and installing and fixing mounting base 1), the mounting base plate 71) is then connected and fixed to mounting base 1). Then, the connecting turntable 74) is rotated, which drives the threaded rod 73) and the connecting push-pull end plate 75) to rotate, so that the threaded rod 73) can move inside the connecting seat 72), which drives the connecting push-pull end plate 75), movable sleeve 76), connecting mounting plate 77) and connecting limit block 78) to move, so that the connecting limit block 78) can be stably locked into the inside of the fixing slot 6) to restrict and fix the fastening bolt 5). The overall structure is simple and the operation is convenient and quick.
[0052] The above embodiments merely illustrate specific implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make several modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model.
Claims
1. A water cooling structure for an automotive motor controller, characterized in that, include: The mounting base (1) has a mounting cavity at the top and mounting grooves symmetrically opened at the top, and receiving grooves are opened at both the front and rear ends of the top. The heat dissipation mechanism (2) is bolted to the inside of the mounting cavity at the top of the mounting base (1); A threaded connector (3) is fixedly welded to the end of the through hole of the heat dissipation mechanism (2); A coolant delivery pipe (4) is fixedly disposed at the end of the threaded connector (3); Fastening bolts (5) are movably located inside the end of the mounting base (1) and connect the mounting base (1) to the vehicle frame; A fixing slot (6) is provided at the end edge of the fastening bolt (5); The connecting limiting mechanism (7) is bolted to the top mounting cavity of the mounting base (1).
2. The water cooling structure for an automotive motor controller according to claim 1, characterized in that: The heat dissipation mechanism (2) includes a connecting end block (21), the end of which is fixedly connected to a connecting bottom box (22), the top of which is welded to a connecting top box (23), and the front and rear surfaces of the connecting bottom box (22) are provided with fixing through grooves (24).
3. The water cooling structure for an automotive motor controller according to claim 2, characterized in that: The bottom of the connecting top box (23) is provided with several heat sinks (25) at equal intervals.
4. The water cooling structure for an automotive motor controller according to claim 1, characterized in that: The threaded connector (3) and the coolant delivery pipe (4) are both located inside the receiving groove at the top of the mounting base (1).
5. A water cooling structure for an automotive motor controller according to claim 1, characterized in that: The connecting limiting mechanism (7) includes a mounting base plate (71), a connecting seat (72) is fixedly connected to the top of the mounting base plate (71), a threaded rod (73) is movably connected to the inside of the connecting seat (72) by a thread, a connecting turntable (74) is fixedly connected to one end of the threaded rod (73), a connecting push-pull end plate (75) is fixedly connected to the other end of the threaded rod (73), a movable sleeve block (76) is movably sleeved on the outer side of the surface of the connecting push-pull end plate (75), a connecting mounting plate (77) is fixedly connected to the side of the movable sleeve block (76) away from the connecting seat (72), and a connecting limiting block (78) is fixedly connected to the side of the connecting mounting plate (77) away from the movable sleeve block (76).
6. A water cooling structure for an automotive motor controller according to claim 5, characterized in that: The mounting base plate (71) is located inside the mounting groove at the top of the mounting base frame (1) and is connected by bolts.
7. A water cooling structure for an automotive motor controller according to claim 5, characterized in that: The outer side of the connecting limiting block (78) slides and fits against the inner side of the fixing slot (6).