Heating connection device for fuel cell system

Abstract

This invention provides a heating connection device for a fuel cell system, comprising: a connecting body with a connecting pipe arranged along its axis, and a first connecting portion and a second connecting portion respectively provided at both ends of the connecting body, the connecting body being connected to corresponding working elements through the first connecting portion and the second connecting portion respectively; and a heating element disposed on the connecting body for heating the connecting body according to control commands, so that the connecting body can conduct heat to the working elements. Thus, by loading a heating element onto the connecting body, the connecting body is heated by the heating element, and the heat from the connecting body is transferred to the working elements by thermal conduction. Therefore, the heating element is not arranged on the working elements, but on the connecting body, so that when heat insulation and heat insulation measures are applied to the heating element, the heat dissipation of the working elements will not be affected, ensuring the normal operation of the fuel cell system.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of pipe dredging of fuel cell systems, and particularly relates to a heating connecting device applied to a fuel cell system. BACKGROUND

[0002] "Low temperature start" is one of the difficulties faced by current fuel cell systems for vehicles. Water is generated in the reaction of fuel cells, and water vapor is easy to condense and freeze in a low temperature environment, which can further block the reaction gas passage and affect the normal operation of the system. In order to ensure the operation of the fuel cell system in a low temperature environment, a heating device is usually used to heat the key components of the reaction gas passage to above the freezing point.

[0003] In the prior art, if the heated part needs to be heated, the heating element is usually arranged directly on the heated body. However, after arranging the heating element on the heated body, heat preservation and heat insulation measures need to be taken on the heating element, which inevitably reduces the heat dissipation capacity of the heated part in a high temperature environment in summer, which may adversely affect the operation of the fuel cell system. SUMMARY

[0004] In order to solve the above problems, the present application provides a heating connecting device applied to a fuel cell system, which overcomes the above technical problems.

[0005] In order to achieve the above purpose, the first aspect of the present application provides a heating connecting device applied to a fuel cell system, comprising: a connecting body provided with a connecting pipeline in the axial direction, and the two ends of the connecting body are respectively provided with a first connecting part and a second connecting part, and the connecting body is connected to the corresponding working element through the first connecting part and the second connecting part respectively; a heating part arranged on the connecting body, used for heating the connecting body according to the control instruction, so that the connecting body conducts heat to the working element.

[0006] Optionally, the heating part is arranged on the outer surface of the connecting body.

[0007] Optionally, the heating part is arranged in a ring shape.

[0008] Optionally, further comprising: a heat insulation ring sleeved on the outer surface of the heating part, used for reducing the heat loss of the heating part.

[0009] Optionally, in the case that the outer wall of the working element abuts against the inner wall of the connecting pipeline, the heating part is arranged on the inner wall of the connecting pipeline, and the heating part abuts against the working element.

[0010] Optionally, the first connecting part and / or the second connecting part comprises one or more of the following: an external thread arranged at the end of the connecting body, a clamping protrusion arranged at the end of the connecting body, or an internal thread arranged on the inner wall of the end of the connecting pipe.

[0011] Optionally, further comprising: a buffer ring groove arranged on the inner wall of the connecting pipe, for storing the working medium flowing therethrough, so as to avoid the working medium flowing to the downstream working element.

[0012] Optionally, further comprising: a sensor mounting groove arranged on the connecting body, for placing a temperature sensor for monitoring the temperature of the connecting body.

[0013] Optionally, the length of the end of the connecting body in the direction perpendicular to the axis of the connecting body is less than the length of the connecting body in the direction perpendicular to the axis of the connecting body.

[0014] Optionally, further comprising: a sealing groove arranged on the end face of the connecting body, and a sealing element arranged in the sealing groove; wherein the end face is a contact surface of the connecting body for abutting the working element, except the first connecting part and / or the second connecting part.

[0015] The beneficial effects of the present application are: by loading the heating element on the connecting body, the heating of the connecting body by the heating element is realized, and the heat of the connecting body is transmitted to the working element in the form of heat conduction, so that the heating element is not arranged on the working element, but is arranged on the connecting body, so that the heat dissipation of the working element will not be affected when the heat preservation and heat insulation measures are arranged on the heating element, and the normal working of the fuel cell system is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings accompanying the specification of this application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application, serve to explain the present application, and do not constitute improper limitations on the present application. In the drawings:

[0017] Fig. 1 is a side view of the heating connecting device applied to the fuel cell system according to the embodiment of the present application;

[0018] Fig. 2 is a sectional view of the heating connecting device applied to the fuel cell system according to the embodiment of the present application;

[0019] Fig. 3 is an assembly schematic view of the heating connecting device applied to the hydrogen circulating pump for heating according to the embodiment of the present application.

[0020] Wherein, 100, connecting body; 110, external thread; 120, clamping protrusion; 130, heating piece; 140, heat insulation ring; 150, sensor installation groove; 160, tightening boss; 170, buffer ring groove; 180, sealing groove; 190, end face; 200, working element. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and in no way should be taken as any limitation on the present application and its application or uses. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the scope of the present application.

[0022] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, there is a reference to the presence of a feature, step, operation, device, component, and / or combinations thereof.

[0023] Unless specifically stated otherwise, the relative arrangements of components and steps, numerical expressions, and numerical values set forth in the various embodiments described herein are not meant to limit the scope of the present application. At the same time, it should be understood that the sizes of the various parts shown in the drawings are not drawn in proportion. Techniques, methods, and devices known to those of ordinary skill in the relevant art can not be discussed in detail, but should be considered as part of the specification where appropriate. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0024] In order to facilitate the understanding of the embodiments of the present application, the structure of the present application will be described in detail below through several specific embodiments.

[0025] According to Figs. 1-3 As shown in the drawings, the embodiments of the present application provide a heating connection device applied to a fuel cell system, comprising: a connecting body 100, a first connecting part, a second connecting part, and a heating piece 130.

[0026] The connecting body 100 is provided with a connecting pipe along the axial direction, and the first connecting part and the second connecting part are respectively arranged at the two ends of the connecting body 100, and the connecting body 100 is connected to the corresponding working element 200 through the first connecting part and the second connecting part respectively. In addition, the heating element 130 is arranged on the connecting body 100, and the heating element 130 heats the connecting body 100 according to the control instruction, so that the connecting body 100 conducts heat to the working element 200.

[0027] The working element 200 includes but is not limited to a hydrogen circulation pump.

[0028] Preferably, the connecting body 100 is made of aluminum alloy or copper alloy with good heat conductivity.

[0029] Therefore, by loading the heating element 130 on the connecting body 100, the heating element 130 heats the connecting body 100, and the heat of the connecting body 100 is transmitted to the working element 200 in the form of heat conduction. Therefore, the heating element 130 is arranged on the connecting body 100, so that the heat insulation and heat insulation measures arranged on the heating element 130 will not affect the heat dissipation of the working element 200, and the normal operation of the fuel cell system is ensured.

[0030] Specifically, the heating element 130 can be arranged on the outer surface of the connecting body 100. Of course, the following arrangement can also be made: in the case that the outer wall of the working element 200 abuts against the inner wall of the connecting pipe, the heating element 130 is arranged on the inner wall of the connecting pipe, and the heating element 130 abuts against the working element 200.

[0031] In this embodiment, the heating element 130 can be arranged on the outer surface of the connecting body 100.

[0032] The heating element 130 is arranged in a ring shape. Of course, the heating element 130 can also be arranged to include a plurality of heating small elements, which are fixed on the outer surface of the connecting body 100 in sequence along the axial direction of the connecting body 100.

[0033] In another embodiment, the connecting device further comprises a heat insulation ring 140, which is sleeved on the outer surface of the heating element 130, and is used for reducing the heat loss of the heating element 130.

[0034] In another embodiment, the first connecting part and / or the second connecting part comprises one or more of the following: an external thread 110 provided at an end of the connecting body 100, a clamping protrusion 120 provided at an end of the connecting body 100, or an internal thread provided on an inner wall of an end of the connecting pipe.

[0035] According to Figs. 1-3 As shown in the figure, the first connecting part is the above-mentioned external thread 110, and the second connecting part is the above-mentioned clamping protrusion 120.

[0036] When the working element 200 that needs to be heated is connected through the first connecting part, the heating member 130 heats the connecting body 100, and the heat on the connecting body 100 can be transmitted to the working element 200 that needs to be heated through the thread engagement. Of course, the heat on the connecting body 100 can be transmitted to the working element 200 on the other side.

[0037] In another embodiment, the device is further provided with a buffer ring groove 170, which is opened on the inner wall of the connecting pipe, and the buffer ring groove 170 is used to store the working medium flowing through to avoid the working medium flowing to the downstream working element 200. Preferably, the buffer ring groove 170 is provided at the middle part of the connecting body 100.

[0038] In another embodiment, the device further comprises a sensor installation groove 150, which is opened on the connecting body 100 and is used to place a temperature sensor for monitoring the temperature of the connecting body 100.

[0039] In another embodiment, the length of the end of the connecting body 100 in the direction perpendicular to the axis of the connecting body 100 is less than the length of the connecting body 100 in the direction perpendicular to the axis of the connecting body 100.

[0040] In another embodiment, the device further comprises a sealing groove 180, which is opened on the end face 190 of the connecting body 100, and a sealing member is provided in the sealing groove 180; wherein the end face 190 is a contact surface of the connecting body 100 for abutting the working element 200 when the first connecting part and / or the second connecting part is connected to the corresponding working element 200, and the first connecting part and / or the second connecting part is excluded.

[0041] Wherein, the sensor installation groove 150 is opened on the end face 190 of the other side of the connecting body 100.

[0042] In this regard, the connecting device has a simple structure, a compact structure arrangement, is easy to package and seal, and is easy to meet the requirements of dustproof and waterproof of vehicle devices.

[0043] Specifically, according to Figs. 1-3 As shown, one end of the connecting device is provided with an external thread 110 for connecting the connecting device with the working element 200, and the end face 190 of the connecting device (i.e. the plane in the connecting device perpendicular to the surface where the external thread 110 is located) is provided with a sealing groove 180, and a sealing ring is arranged in the sealing groove 180. During the tightening of the external thread 110, the sealing ring is tightly abutted with the corresponding working element 200, so as to realize the sealing of the working medium. The other end of the connecting device is provided with a clamping protrusion 120 for connecting the corresponding inlet and outlet pipeline (another working element 200).

[0044] It is worth noting that: in order to facilitate tightening, the connecting body 100 is provided with a tightening boss 160. The connecting body 100 is provided with a buffer ring groove 170 in the middle, which can reduce the risk of condensate or impurities in the working medium directly entering the downstream element.

[0045] Moreover, the connecting body 100 is sleeved and fixed with a ring-shaped heating element 130, and the outer surface of the heating element 130 is further sleeved with a heat insulation ring 140, which is used to reduce the heat loss of the heating element 130. The heating element 130 can be a ceramic electric heating tube, an electric heating ring, etc. according to the structure space. Moreover, the middle part of the connecting body 100 is provided with a sensor installation groove 150, specifically, the sensor installation groove 150 is arranged on the connecting body 100, which is used to place a temperature sensor for monitoring the temperature of the connecting body 100, and according to the target temperature of the measuring point, a control instruction is sent to the heating element 130 by the indicating control member to control the heating current, so as to realize the heating temperature of the connecting body 100.

[0046] Among them, the heat conduction between the connecting device and the working element 200 can be realized through the thread contact engagement area, or the contact heat conduction between the end face 190 of the connecting device and the working element 200. Of course, the two heat conduction areas can work at the same time.

[0047] Of course, in this embodiment, the roughness of the contact surface and the contact surface pressure (or tightening torque) between the connecting body 100 and the working element 200 can also be controlled to control the contact thermal resistance. In order to reduce the thermal resistance of the connecting device, the connecting body 100 needs to be made of aluminum alloy or copper alloy with good thermal conductivity.

[0048] Of course, in another embodiment, the threaded connection in the connecting device can be changed to a contact interference fit connection. That is, the thread is replaced by a smooth cylindrical surface, and the cylindrical surface and the cylindrical surface of the working element 200 are connected by setting a contact interference to realize the fitting function of the contact surface, and at the same time realize the contact heat conduction function.

[0049] In the description of the application, it should be understood that the orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, low" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the application; the orientation words "inner, outer" refer to the inner and outer of the contour of each component itself.

[0050] For the convenience of description, spatial relative terms such as "over", "above", "upper surface", "upper" and the like can be used herein to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "over" other devices or structures will be positioned "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below" orientations. The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein are interpreted accordingly.

[0051] In addition, it should be noted that the use of "first", "second" and the like to define parts only facilitates the distinction of corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as a limitation on the scope of protection of the application.

[0052] The above only describes the preferred embodiments of the application and is not intended to limit the application. For those skilled in the art, the application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the application shall be included in the scope of protection of the application.

Claims

1. A heating connection device for a fuel cell system, characterized by comprising: The utility model relates to a kind of hydrogen circulation pump, including: Connecting body (100) is provided with connecting pipeline along axial direction, and the two ends of the connecting body (100) are provided with first connecting part and second connecting part respectively, and the connecting body (100) is connected with corresponding working element (200) respectively by the first connecting part and the second connecting part respectively; Heating element (130) is arranged on the connecting body (100), for heating the connecting body (100) according to control instruction, so that the connecting body (100) conducts heat to the working element (200); Buffer ring groove (170) is opened in the inner wall of the connecting pipeline, for storing the working medium flowing, to avoid the working medium flowing to downstream working element (200); Sealing groove (180) is opened on the end face (190) on the connecting body (100), and sealing element is arranged in the sealing groove (180); Wherein, the end face (190) is the contact surface of the connecting body (100) for abutting the working element (200) except the first connecting part and / or the second connecting part when the first connecting part and / or the second connecting part is connected to corresponding working element (200); Wherein, the heating element (130) is arranged on the outer surface of the connecting body (100); Wherein, the heating element (130) is arranged in a ring shape; Further including: Thermal insulation ring (140) is sleeved on the outer surface of the heating element (130), for reducing heat loss of the heating element (130); Wherein, the working element (200) is hydrogen circulation pump.

2. The apparatus of claim 1, wherein, The first connecting part and / or the second connecting part includes one or more of the following items: External thread (110) arranged on the end of the connecting body (100), clamping protrusion (120) arranged on the end of the connecting body (100) or internal thread arranged on the inner wall of the end of the connecting pipeline.

3. The apparatus of claim 1, wherein, Further including: Sensor installation groove (150) is opened on the connecting body (100), for placing temperature sensor for monitoring the temperature of the connecting body (100).

4. The apparatus of claim 1, wherein, The length of the end of the connecting body (100) in the direction perpendicular to the axial direction of the connecting body (100) is less than the length of the connecting body (100) in the direction perpendicular to the axial direction of the connecting body (100).

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