Expansion water tank, engine and vehicle

Abstract

The utility model discloses an expansion water tank, an engine and a vehicle. The expansion water tank comprises a tank body, a plurality of partition plates and a plurality of expansion water pipes, the conductivity sensor comprises two sensor electrodes, the two sensor electrodes are arranged on the two adjacent partition plates in a one-to-one correspondence mode, and the large faces of the two sensor electrodes are oppositely arranged. Through structural adjustment, the sensor electrode is integrated in the expansion water tank, so that the size occupation can be reduced, the conductivity acquisition precision can be improved, the complexity of a control unit can be reduced, and finally the reliability of the whole system is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to vehicle technical field especially is related to an expansion water tank, engine and vehicle. BACKGROUND

[0002] In the related art, the proton exchange membrane fuel cell needs to work normally in a reasonable temperature range, and the industry adopts a coolant to cool the engine. Because the coolant directly contacts the electrode plate of the stack, a low conductivity coolant is used to control the insulation resistance of the engine. An expansion water tank is configured in the cooling circuit to accommodate the expansion of the system coolant, and also plays the role of pressure setting and water supplementing for the system. The tank body is designed with more partitions to enhance the structural stability of the expansion water tank and improve the water flow dynamics. During the operation of the engine, ions will gradually precipitate from the cooling circuit components. After a long time of work and the deionization equipment fails, the conductivity of the coolant will gradually increase until a certain value causes the insulation problem of the engine. To solve this problem, an electric conductivity sensor is installed at a suitable position in the system to monitor the conductivity of the coolant and give an early warning, and appropriate measures are taken to reduce the ion concentration.

[0003] However, the existing expansion water tank also has significant defects: in actual use, it has problems such as large space occupation, low precision, complex control system, and high failure rate. UTILITY MODEL CONTENTS

[0004] The utility model aims at solving one of the technical problems existing in the prior art. To this end, the utility model provides an expansion water tank, which can improve the conductivity collection precision while reducing the volume occupation, and can reduce the complexity of the control unit, and finally improve the reliability of the overall system.

[0005] The utility model further provides an engine.

[0006] The utility model still further provides a vehicle.

[0007] According to the expansion water tank of the utility model, the tank body is provided with a plurality of partitions, and the conductivity sensor includes two sensor electrodes which are arranged on the adjacent two partitions in one-to-one correspondence and are oppositely arranged between the large faces of the two sensor electrodes.

[0008] According to the expansion water tank of the utility model, the sensor electrodes are integrated in the expansion water tank through structural adjustment, which can improve the conductivity collection precision while reducing the volume occupation, and can reduce the complexity of the control unit, and finally improve the reliability of the overall system.

[0009] In some examples of the utility model, the expansion water tank further comprises: a shell, the sensor electrode is arranged on the shell, and the shell is bonded to the partition plate.

[0010] In some examples of the utility model, the sensor electrode and the shell are integrally injection molded.

[0011] In some examples of the utility model, the partition plate is provided with a through hole at a middle position, and the sensor electrode is arranged at the through hole.

[0012] In some examples of the utility model, the partition plate is provided with a clamping groove at two sides, the clamping groove is oppositely arranged with the through hole, and the sensor electrode is clamped at the through hole through the clamping groove.

[0013] In some examples of the utility model, the conductivity sensor further comprises: a connecting line, one end of the connecting line is electrically connected with the sensor electrode, and the other end of the connecting line is led out from the bottom of the tank body.

[0014] In some examples of the utility model, the conductivity sensor further comprises: a sealing element, the sealing element seals and protects the connecting line.

[0015] In some examples of the utility model, the sensor electrode is below the liquid level of the cooling liquid in the tank body.

[0016] According to the engine of the utility model, comprising: circuit board;The above-mentioned expansion water tank, the conductivity sensor further comprises: controller, the controller is electrically connected on the circuit board, and two sensor electrodes are electrically connected with the controller respectively.

[0017] According to the vehicle of the utility model, comprising: the above-mentioned engine.

[0018] The additional aspects and advantages of the utility model will be partly given in the following description, some will become obvious from the following description, or be understood by the practice of the utility model. BRIEF DESCRIPTION OF DRAWINGS

[0019] The above and / or additional aspects and advantages of the utility model will become apparent and easily understood from the description of embodiments combined with the following drawings, in which:

[0020] Figure 1 It is the first structure schematic view of expansion water tank according to the utility model embodiment;

[0021] Figure 2 It is the second structure schematic view of expansion water tank according to the utility model embodiment;

[0022] Figure 3is a first partial structure schematic view of the expansion water tank according to the embodiment of the utility model;

[0023] Figure 4 is a second partial structure schematic view of the expansion water tank according to the embodiment of the utility model;

[0024] Figure 5 is a structure schematic view of the engine according to another embodiment of the utility model.

[0025] Reference Signs:

[0026] 1, expansion water tank;

[0027] 10, tank body; 100, partition plate; 101, through hole; 102, clamping groove; 20, conductivity sensor; 200, sensor electrode; 201, connecting wire; 202, sealing element; 203, controller; 30, shell; 2, engine; 40, circuit board. DETAILED DESCRIPTION

[0028] The embodiments of the utility model are described in detail below, and the embodiments described with reference to the drawings are exemplary, and the embodiments of the utility model are described in detail below.

[0029] The embodiments of the utility model are described in detail below, and the embodiments described with reference to the drawings are exemplary, and the embodiments of the utility model are described in detail below. Figures 1-5 The expansion water tank 1 according to the embodiment of the utility model is described below.

[0030] As shown in Figure 1 , Figure 2 and Figure 5 , the expansion water tank 1 according to the embodiment of the utility model comprises a tank body 10 and a conductivity sensor 20. The tank body 10 is the main component of the expansion water tank and can be used to store water expanded due to heating, and can also be used to install other components, and the conductivity sensor 20 can measure the concentration of dissolved substances in water by detecting the conductivity of water samples.

[0031] As shown in Figure 1 , a plurality of partition plates 100 are arranged in the tank body 10. The partition plate 100 can play a partitioning role and can be used to enhance the structural stability of the expansion water tank 1 and improve the water flow dynamics, and the plurality of partition plates 100 can further enhance the structural stability of the expansion water tank 1 and improve the water flow dynamics, and the partition plate 100 can be used to install and set the sensor electrode 200, and the plurality of partition plates 100 are arranged at intervals, which can avoid interference between the plurality of partition plates 100, and can also make the distribution range of the plurality of partition plates 100 wider, and to a certain extent, the structural stability of the expansion water tank 1 can be enhanced and the water flow dynamics can be improved, and the installation and setting of the sensor electrode 200 are facilitated.

[0032] As shown in Figure 1 , Figure 2 andFigure 5 As shown, the conductivity sensor 20 comprises two sensor electrodes 200, which are arranged on the adjacent two separators 100 one by one, and the large surfaces of the two sensor electrodes 200 are arranged opposite to each other. It should be noted that the sensor electrode 200 is a key component of the conductivity sensor 20, which is part of a device for detecting a specific physical or chemical quantity, and can convert the sensed information into an electrical signal for further analysis or processing. The two sensor electrodes 200 are arranged on the adjacent two separators 100 one by one, and the adjacent two separators 100 are provided with sensor electrodes 200. By integrating the sensor electrodes 200 inside the expansion tank 1, the need for external connection and wiring can be reduced, making the overall design more compact and simple, and the installation space requirement can be minimized. There is no need to specially consider the installation of the conductivity sensor 20, which can reduce the volume occupation while improving the conductivity collection accuracy, and can reduce the complexity of the control unit, and finally improve the reliability of the overall system. The large surfaces of the two sensor electrodes 200 are arranged opposite to each other, and the larger surfaces of the two sensor electrodes 200 are placed face to face. This configuration helps to improve the measurement accuracy and response speed, and can more accurately monitor the water quality, ensure the area of the larger sensor electrode 200 and the distance of the larger sensor electrode 200, and calculate the accurate conductivity. It should be noted that the two sensor electrodes 200 cannot be blocked by any object other than the coolant, and the sensor electrode 200 will not affect the strength of the expansion tank 1, and can strengthen the strength of the expansion tank 1 to a certain extent. The volume occupied by the sensor electrode 200 is very small relative to the volume of the tank 10, and can be designed according to the structure of the expansion tank 1. Among them, the material cost of the sensor electrode 200 is low, and the corresponding electrical verification cost is lower, which can save a large cost. The sensor electrode 200 itself is a passive device, and the circuit design is simple, which has little effect on the overall circuit and can reduce the possibility of failure. The conductivity sensor 20 is not simply integrated, but is split into the conductivity sensor 20, and the existing structure and controller 203 are used to realize high-precision conductivity sensor 20 with economy and reliability. The commonly used water inlet and outlet of the expansion tank 1, the exhaust port, and the liquid level sensor interface are not changed, which will not affect the interface of the original expansion tank 1 and the original function configuration.

[0033] Therefore, by adjusting the structure, the sensor electrode 200 is integrated inside the expansion tank 1, which can reduce the volume occupation while improving the conductivity collection accuracy, and can reduce the complexity of the control unit, and finally improve the reliability of the overall system.

[0034] Specifically, as Figure 3As shown, the expansion water tank 1 further comprises a shell 30, the sensor electrode 200 is arranged on the shell 30, and the shell 30 is bonded to the partition plate 100. The shell 30 can be used to install the sensor electrode 200, and the sensor electrode 200 is arranged on the shell 30, and the shell 30 is bonded to the partition plate 100. By bonding the shell 300 and the partition plate 100, the two sensor electrodes 200 can be arranged one by one on the adjacent two partition plates 100. At this time, there is no need to adjust the structure of the existing expansion water tank 1, and only needs to be glued during installation. Moreover, the style of the sensor electrode 200 and the shell 30 can be adjusted at any time according to the structure requirements inside the expansion water tank 1, and the special-shaped structure can be used according to the actual space inside the tank 10. Among them, the glue with high temperature resistance and low ion release rate can be used to bond the shell 30 to the partition plate 100, and at the same time, the sensor electrode 200 needs to be positively corresponding.

[0035] In addition, as Figure 3 shown, the sensor electrode 200 and the shell 30 are an integrally injection molded structure. The integrally injection molded structure has high strength and durability, can reduce cost and weight, and the sensor electrode 200 and the shell 30 are an integrally injection molded structure. At this time, the sensor electrode 200 and the shell 30 are an integral structure, the structure is more stable and firm, and it is convenient for the two sensor electrodes 200 to be arranged one by one on the adjacent two partition plates 100. At the same time, only one processing mold is needed, which is convenient for production and can improve production efficiency.

[0036] Of course, as Figure 4 shown, the middle position of the partition plate 100 is provided with a through hole 101, and the sensor electrode 200 is arranged at the through hole 101. The through hole 101 can be used to install other components, and the middle position of the partition plate 100 is provided with a through hole 101, and the sensor electrode 200 is arranged at the through hole 101. Through the through hole 101, the sensor electrode 200 can be arranged at the middle position of the partition plate 100. At this time, the installation of the sensor electrode 200 can be simplified, and the sensor electrode 200 can effectively contact with the cooling liquid and perform necessary measurement.

[0037] Further, as Figure 4As shown, the two sides of the partition 100 are provided with clamping grooves 102, the clamping grooves 102 are arranged opposite to the through holes 101, and the sensor electrodes 200 are clamped at the through holes 101 through the clamping grooves 102. The clamping grooves 102 can play a clamping role, and the clamping connection method is more simple and convenient, and can make the connection between the partition 100 and the sensor electrodes 200 firm and reliable. The two sides of the partition 100 are provided with clamping grooves 102, and the openings of the clamping grooves 102 are correspondingly arranged in the front direction. The clamping grooves 102 are arranged opposite to the through holes 101, and the sensor electrodes 200 are clamped at the through holes 101 through the clamping grooves 102. The sensor electrodes 200 are embedded in the clamping grooves 102 in a rear-mounted manner and arranged at the through holes 101. Thus, the overall operability is strong, the subsequent failure rate is low, and phenomena such as glue separation and bolt loosening do not occur. In addition, manual installation errors can be avoided. During the assembly process of the expansion tank 1, the expansion tank 1 installation structure is used to completely clamp and fix the sensor electrodes 200.

[0038] In addition, as shown in Figure 1 The conductivity sensor 20 also includes a connecting line 201, one end of the connecting line 201 is electrically connected with the sensor electrode 200, and the other end of the connecting line 201 is led out from the bottom of the tank body 10. The connecting line 201 can play an electrical connection role. One end of the connecting line 201 is electrically connected with the sensor electrode 200, and the other end of the connecting line 201 is led out from the bottom of the tank body 10. After the connecting line 201 is electrically connected with the sensor electrode 200, it is directly led out from the bottom of the tank body 10. At this time, the connection method is simple and easy to accept. The connecting line 201 is hidden along the periphery of the expansion tank 1, and the connecting lines 201 of the two sensor electrodes 200 can be placed at the same position to form a 2-pin wire harness connector.

[0039] It should be noted that, as shown in Figure 1 The conductivity sensor 20 also includes a sealing member 202, which seals and protects the connecting line 201. The sealing member 202 can play a sealing and protection role and can be used to seal and protect the connecting line 201. The sealing member 202 seals and protects the connecting line 201. At this time, the connecting line 201 itself can be prevented from affecting the detection of the conductivity sensor 20, so as to improve the collection accuracy of the conductivity of the conductivity sensor 20, and finally improve the reliability of the overall system.

[0040] In addition, as shown in Figure 1 and Figure 2As shown, the sensor electrode 200 is located below the surface of the coolant inside the housing 10. This ensures that the sensor electrode 200 is completely immersed in the coolant, and direct contact with the coolant guarantees data reliability, thereby accurately measuring the coolant's conductivity. Through direct contact with the coolant, the conductivity sensor 200 provides immediate feedback, helping operators or automated systems adjust the cooling system's operating parameters according to actual conditions. Furthermore, it can promptly detect changes in the coolant's state, helping to prevent potential problems and extending the equipment's lifespan. Additionally, the sensor electrode 200 is fully integrated into the expansion tank 1, eliminating the need for specific mold modifications to the expansion tank 1.

[0041] Optionally, a structural component or other structural location can be designed in the coolant pipeline to integrate a conductivity sensor 20 or sensor electrode 200 for single-point conductivity acquisition at more precise locations.

[0042] like Figure 5 As shown, the engine 2 according to the present invention includes: a circuit board 40 and an expansion tank 1 as described in the above embodiments. The conductivity sensor 20 further includes: a controller 203, which is electrically connected to the circuit board 40, and the two sensor electrodes 200 are respectively electrically connected to the controller 203.

[0043] The circuit board 40 can provide mechanical support and electrical connection of various electronic components, the expansion water tank 1 can accommodate the volume change of the water in the engine 2 system due to temperature change, prevent the pressure in the system from being too large or too small, the controller 203 can receive data from the sensor electrode 200, process the data, and make decisions according to the preset logic or algorithm, and then control the action of the actuator or the response of other systems, the controller 203 is electrically connected to the circuit board 40, and the two sensor electrodes 200 are electrically connected to the controller 203, the controller 203 is electrically connected to the circuit board 40 and the sensor electrode 200, at this time the controller 203 can be used to measure the resistance value between the sensor electrodes 200, the sensor electrodes 200 are electrically connected to the controller 203 through the connecting lines 201, the connection mode is simple and acceptable, secondly, the data acquisition accuracy can be improved, and accurate conductivity can be obtained only by simple calculation, without considering numerical compensation and other problems, the resource occupation of the controller 203 can be reduced, in addition, the separate arrangement of the sensor electrode 200 and the control circuit is beneficial to prevent the control circuit from being damaged due to long-term contact with high-temperature cooling liquid, and the product competitiveness can be improved. Among them, the integrated sensor electrode 200 of this mode can cooperate with the controller 203 of any manufacturer, only the area of the sensor electrode 200 and the distance between the two sensor electrodes 200 are required, and the real-time calculation of the conductivity can be realized by detecting the resistance value between the two sensor electrodes 200, only the connecting line 201 is required to be connected, and no installation structure is required to cooperate. It should be noted that the controller 203 can measure the resistance value between the sensor electrodes 200 three times, filter large values, and ensure the reliability of the data, track the filtering process, and make a warning when the conductivity changes greatly.

[0044] The risk of the scheme is controllable: the conductivity of the system cooling liquid does not change suddenly during normal operation, so the system conductivity can be effectively collected at each position, if the engine 2 is placed for a long time, the conductivity at each position is not uniform, and the water circulation can quickly tend to be consistent; the main factor of the sudden change of the conductivity is usually the process of supplementing the cooling liquid with excessive conductivity in the expansion water tank 1, the sensor electrode 200 is integrated in the expansion water tank 1, which is beneficial to the first time discovery of the sudden change of the conductivity, and has certain significance for the protection of the engine 2.

[0045] The vehicle according to the embodiment of the utility model, comprising: the engine 2 described in the above embodiment.

[0046] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0047] In the description of this utility model, "first feature" and "second feature" may include one or more of the features. In the description of this utility model, "multiple" means two or more. In the description of this utility model, "above" or "below" the second feature may include direct contact between the first and second features, or contact between the first and second features through another feature between them. In the description of this utility model, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature.

[0048] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example.

[0049] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An expansion tank (1), characterized in that, include: The box (10) is provided with multiple partitions (100). The conductivity sensor (20) includes two sensor electrodes (200), which are disposed on two adjacent partitions (100) in a one-to-one correspondence, and the large surfaces of the two sensor electrodes (200) are disposed opposite to each other.

2. The expansion tank (1) according to claim 1, characterized in that, Also includes: The housing (30) has the sensor electrode (200) disposed on the housing (30) and the housing (30) is bonded to the partition (100).

3. The expansion tank (1) according to claim 2, characterized in that, The sensor electrode (200) and the housing (30) are integrally injection molded structural components.

4. The expansion tank (1) according to claim 1, characterized in that, A through hole (101) is provided in the middle of the partition (100), and the sensor electrode (200) is disposed at the through hole (101).

5. The expansion tank (1) according to claim 4, characterized in that, The partition (100) has slots (102) on both sides, the slots (102) are opposite to the through hole (101), and the sensor electrode (200) is engaged in the through hole (101) through the slots (102).

6. The expansion tank (1) according to claim 1, characterized in that, The conductivity sensor (20) further includes a connecting wire (201), one end of which is electrically connected to the sensor electrode (200), and the other end of which extends out from the bottom of the housing (10).

7. The expansion tank (1) according to claim 6, characterized in that, The conductivity sensor (20) further includes a seal (202) that seals and protects the connecting wire (201).

8. The expansion tank (1) according to claim 1, characterized in that, The sensor electrode (200) is located below the surface of the coolant inside the housing (10).

9. An engine (2), characterized in that, include: Circuit board (40); The expansion tank (1) according to any one of claims 1-8, wherein the conductivity sensor (20) further comprises: a controller (203), the controller (203) being electrically connected to the circuit board (40), and the two sensor electrodes (200) being electrically connected to the controller (203) respectively.

10. A vehicle, characterized in that, include: The engine (2) as described in claim 9.

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