A stack package case and a fuel cell

Abstract

The present application relates to a kind of electric pile packaging shell and fuel cell, belong to electric pile packaging technical field.The electric pile packaging shell includes: base, with the first limiting portion of electric pile concave-convex cooperation, to limit the translation of electric pile in base;Upper cover plate, cover is in base, base and the upper cover plate are collectively formed to form the packaging space of electric pile;And support structure, it is built-in in packaging space and is arranged in the opposite ends of electric pile, to form the internal support of electric pile packaging shell, and cooperate first limiting portion and constrain the electric pile.The present application provides a new electric pile packaging structure, solves the difficult problem of existing electric pile packaging, poor stable effect and low efficiency.

Description

Technical Field

[0001] This invention relates to the field of fuel cell technology, and more specifically, to a fuel cell stack packaging housing and a fuel cell. Background Technology

[0002] Currently, there is a significant demand for increased system power in fuel cells, with installed power often reaching hundreds of kW or MW levels. To meet this demand, the number of individual cells in the fuel cell stack is often increased, thereby increasing the total operating voltage of the stack and consequently boosting the power output.

[0003] When fuel cell stacks are connected in series using a multi-segment stack structure, the existing fuel cell stack packaging shell can no longer achieve the purpose of fixed connection assembly. On the one hand, the assembly is not reliable, and the fuel cell stack is prone to shaking, affecting the normal use of the fuel cell stack. On the other hand, due to the accumulation of dimensional errors during the stacking of multi-segment stack structures, assembly is extremely difficult and seriously affects the installation efficiency. Summary of the Invention

[0004] The purpose of this invention is to overcome the technical problem that the packaging shell of existing fuel cell stacks affects the assembly and use of the fuel cell stack, thereby providing a fuel cell stack packaging shell and a fuel cell stack.

[0005] To address the aforementioned problems, the first objective of this invention is to provide a fuel cell stack packaging housing, comprising:

[0006] The base has a first limiting part on its upper surface near the fuel cell stack, which engages with the fuel cell stack to limit the translation of the fuel cell stack on the base.

[0007] A top cover plate, disposed on the base, the base and the top cover plate together enclosing the encapsulation space of the fuel cell stack; and,

[0008] A support structure is built into the encapsulation space and erected at opposite ends of the fuel cell stack to form an internal support for the fuel cell stack encapsulation shell and to constrain the fuel cell stack in conjunction with the first limiting part.

[0009] Optionally, the upper surface is provided with a first guide portion that mates with the stack.

[0010] Optionally, the first guide portion is a guide groove extending along a first direction of the base to constrain the assembly direction of the fuel cell stack on the base; the first limiting portion is a blind groove provided on the bottom surface of the guide groove, and at least two first limiting portions are arranged at intervals along a second direction of the base; wherein the first direction and the second direction are perpendicular to each other.

[0011] Optionally, at least one of the first limiting portions has a dimension along the stacking direction of the fuel cell stack that is larger than the dimension along the stacking direction of the positioning block corresponding to the fuel cell stack; the dimension of at least one of the first limiting portions is adapted to the dimension of the positioning block corresponding to the fuel cell stack.

[0012] Optionally, the support structure is provided with one or more of the following: a hydrogen sensor mounting position, a temperature sensor mounting position, and a humidity sensor mounting position.

[0013] Optionally, the support structure includes a first side rod, a cross rod, and a second side rod connected in sequence. The first side rod and the second side rod are located on the same side of the cross rod, such that the first side rod and the second side rod are located at opposite ends of the fuel cell stack and connected to the base.

[0014] Optionally, the support structure is provided with a second limiting portion for limiting the fuel cell stack.

[0015] Optionally, the support structure is an insulating support structure.

[0016] Optionally, the upper surface is provided with a PTC heater mounting position.

[0017] Optionally, sealing strips are provided at the connection between the base and the upper cover plate, and at the connection between the upper cover plate and the support structure.

[0018] Optionally, the sealing strip is integrally molded.

[0019] Optionally, the sealing strip is disposed around the connector, which is used to connect the upper cover plate to the base and the support structure.

[0020] Optionally, the base includes a plate-shaped base body and a first side plate and a second side plate that are opposite to each other and connected to both ends of the base body. The first side plate and the second side plate block both sides of the encapsulation space enclosed by the base body and the top cover plate.

[0021] Optionally, it further includes: a hydrogen-air-liquid medium pipeline structure, the hydrogen-air-liquid medium pipeline structure including a first hydrogen-air-liquid inlet connector and a first hydrogen-air-liquid outlet connector installed on one of the first side plate and the second side plate, the first hydrogen-air-liquid inlet connector and the first hydrogen-air-liquid outlet connector respectively connected to the hydrogen-air-liquid inlet pipeline and the hydrogen-air-liquid outlet pipeline of the fuel cell; and an electrical pipeline structure, the electrical pipeline structure including a power supply input port, a power supply output port, a communication interface and a sensor interface installed on the other of the first side plate and the second side plate, the power supply input port being used to supply power to the fuel cell stack, the power supply output port being used to output the voltage generated by the fuel cell stack to the load, and the communication interface being used to establish a communication connection with the fuel cell stack.

[0022] Optionally, one of the first side plate and the second side plate is provided with a purge inlet, and the other of the first side plate and the second side plate is provided with a purge outlet; both the purge inlet and the purge outlet are connected to the encapsulation space.

[0023] Optionally, it also includes a support frame mounted on the support structure, the support frame having a wire harness mounting position.

[0024] A second objective of the present invention is to provide a fuel cell comprising a stack encapsulation housing and a stack as described above, wherein the stack is fixedly installed within the stack encapsulation housing by the first limiting portion and the supporting structure.

[0025] Compared with the prior art, the present invention has the following advantages:

[0026] 1. This application designs a fuel cell stack enclosure. A first limiting part horizontally limits and fixes the fuel cell stack, while a support structure vertically connects between the base and the top cover to provide internal support and limit and fix the stack's height. The top cover covers the base, forming a closed outer shell for housing and fixing the fuel cell. The first limiting part and support structure achieve secure installation of the fuel cell stack, limiting its horizontal and vertical movement, ensuring a stable assembly and preventing wobbling, thus guaranteeing normal operation. Furthermore, this design differs from existing methods that fix the stack at both ends, eliminating assembly difficulties caused by accumulated dimensional errors from stacking different fuel cell stacks, thereby ensuring installation efficiency. Additionally, the support structure, surrounding the fuel cell stack, provides internal support, effectively protecting the stack and improving the fuel cell's resistance to pressure and impact.

[0027] 2. This application makes manual assembly of fuel cells easier and simpler to implement through the first guide part, thereby improving the installation efficiency of the fuel cell stack. Furthermore, the first guide part and the first limiting part can jointly form a horizontal constraint on the fuel cell stack, and provide coarse and fine positioning during the fuel cell stack assembly process, thus improving assembly efficiency.

[0028] 3. This application exhibits superior sealing performance. The sealing strip not only seals the connection between the cover plate and the base and support structure, but also seals any leakage points caused by the connecting parts. Furthermore, the sealing strip is integrally molded, eliminating any leakage points in this application.

[0029] 4. This application achieves electrical separation of the fuel cell and monitors internal humidity, temperature, and hydrogen concentration through purging and heating, thereby ensuring the safety of fuel cell operation. Attached Figure Description

[0030] Figure 1 This is an exploded structural diagram of the fuel cell stack packaging housing in an embodiment of the present invention;

[0031] Figure 2 This is a schematic diagram of the base structure of the fuel cell stack packaging housing in an embodiment of the present invention;

[0032] Figure 3 for Figure 2 Enlarged structural diagram at point A;

[0033] Figure 4 This is a schematic diagram of the structure of the upper cover plate in an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the structure of the first side plate in an embodiment of the present invention;

[0035] Figure 6 This is a schematic diagram of the structure of the second side plate in an embodiment of the present invention;

[0036] Figure 7 This is a schematic diagram of the supporting structure in an embodiment of the present invention;

[0037] Figure 8 This is a schematic diagram of the overall structure of the fuel cell stack packaging shell in an embodiment of the present invention.

[0038] Explanation of reference numerals in the attached figures:

[0039] 1- Battery stack packaging housing;

[0040] 11-Base;

[0041] 111-Base body; 1111-First sealing groove; 1112-First connecting groove; 1113-First guide part; 1114-First limiting part; 112-PTC heater;

[0042] 12-Top cover plate;

[0043] 121 - Cover plate body; 122 - First side cover plate; 123 - Second side cover plate;

[0044] 13-First side plate;

[0045] 131-First handle; 132-Power input port; 133-Power output port; 134-Communication interface; 135-Sensor interface; 136-Second sealing groove;

[0046] 14-Second side panel;

[0047] 141-Second handle; 142-First hydrogen-air liquid inlet connector; 143-First hydrogen-air liquid outlet connector; 144-Third sealing groove;

[0048] 15-Supporting structure;

[0049] 151-Horizontal bar; 152-First side bar; 153-Second side bar; 154-Fourth sealing groove; 155-Second limiting part; 156-Monitoring sensor; 157-Mounting plate;

[0050] 16 - Sealing strip;

[0051] 17-Support frame;

[0052] 171-Horizontal slot frame body; 172-Side connecting plate; 173-Cable routing hole. Detailed Implementation

[0053] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0054] In the description of this invention, it should be noted that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0055] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can also refer to the internal connection of two components; and they can refer to a wireless connection or a wired connection. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0056] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0057] like Figure 1-8 As shown, an embodiment of the present invention provides a battery pack housing 1, which includes a base 11, an upper cover plate 12, and a support structure 15, wherein:

[0058] The upper surface of the base 11 near the fuel cell stack is provided with a first guide portion 1113 and a first limiting portion 1114 that are in concave-convex contact with the fuel cell stack to limit the translation of the fuel cell stack on the base 11.

[0059] The upper cover plate 12 is placed on the base 11, and the base 11 and the upper cover plate 12 together enclose the encapsulation space of the fuel cell stack.

[0060] The support structure 15 is built into the packaging space and erected at opposite ends of the fuel cell stack to form an internal support for the fuel cell stack packaging shell 1. The support structure 15 is vertically connected between the base 11 and the upper cover plate 12 to provide internal support for the fuel cell stack packaging shell 1 and to constrain the fuel cell stack in conjunction with the first guide part 1113 and the first limiting part 1114.

[0061] Therefore, the base 11 has multiple first guide portions 1113 for coarse positioning of both ends of the fuel cell stack structure. When the fuel cell stack module is assembled, it is first placed on the base 11, and pushed inward using the first guide portion 1113 on one end of the base 11 as a reference for positioning. Then, the fuel cell stack structure is horizontally fixed by aligning with the first limiting portion 1114. When multiple fuel cell stack structures are connected in series, the first guide portion 1113 and the first limiting portion 1114 are respectively provided at both ends of each fuel cell stack module. The first guide portion 1113 is used for coarse positioning, and then the first limiting portion 1114 is used for precise positioning. As for the length error formed by the stacking of multiple fuel cell stack structures, it can be adjusted by the first guide portion 1113 to ensure that the fuel cell stack can be completely fixed in the fuel cell stack packaging shell 1.

[0062] It should be noted that in the embodiments of the present invention, the fuel cell stack housing 1 is provided with a fuel cell stack structure. Preferably, the fuel cell stack structure includes a first fuel cell stack structure and a second fuel cell stack structure arranged opposite each other. For ease of standardization and installation, the first fuel cell stack structure and the second fuel cell stack structure are completely identical. Of course, the dimensions of the first fuel cell stack structure and the second fuel cell stack structure can also be customized according to actual power requirements and operating conditions.

[0063] In other embodiments, the upper surface of the base 11 may not have the first guide portion 1113. In actual production, the fuel cell stack can also be installed on the first limiting portion 1114 by a robot or a hoisting structure.

[0064] Furthermore, the first guide portion 1113 is a guide groove extending along the first direction of the base 11 to constrain the assembly direction of the fuel cell stack on the base 11; the first limiting portion 1114 is a blind groove provided on the bottom surface of the guide groove, and at least two first limiting portions 1114 are arranged at intervals along the second direction of the base 11; wherein the first direction and the second direction are perpendicular to each other.

[0065] Please see Figure 2As shown, in a specific embodiment of the present invention, the upper surface of the base 11 is provided with a first guide portion 1113 and a first limiting portion 1114 suitable for placing the fuel cell stack. Preferably, the first guide portion 1113 is a guide groove extending along the first direction of the base 11 (that is, the Y-axis direction in the figure), and the first limiting portion 1114 is a blind groove opened in the first guide portion 1113. When both ends of the fuel cell stack fall into the first guide portion 1113, the first guide portion 1113 is suitable for guiding the installation direction of the fuel cell stack to limit the displacement during the assembly of the fuel cell stack (to prevent it from displacing along the X-axis direction). The multiple first limiting portions 1114 are suitable for limiting and fixing the fuel cell stack in the horizontal direction (that is, the XY-axis direction).

[0066] Furthermore, at least one first limiting part 1114 has a dimension along the stacking direction of the fuel cell stack that is larger than the dimension along the stacking direction of the corresponding positioning block of the fuel cell stack; the dimension of at least one first limiting part 1114 is adapted to the dimension of the corresponding positioning block of the fuel cell stack. The first limiting part 1114 with a dimension larger than its corresponding limiting block is used to accommodate errors in the length direction of the fuel cell stack, while the first limiting part 1114 with a dimension that is exactly adapted to its corresponding limiting block is suitable for limiting and positioning the fuel cell stack to fix it. Preferably, the larger first limiting part 1114 is assembled with the limiting block of the fuel cell stack first to achieve coarse positioning of the fuel cell stack, in order to accommodate length errors in the stacking direction of the fuel cell stack, and the first limiting part 1114 with a dimension that is adapted to its corresponding positioning block is assembled last to achieve precise positioning and limiting of the fuel cell stack, thereby simplifying the fuel cell stack assembly steps, improving its assembly efficiency, and having strong adaptability.

[0067] Please see Figure 1 , 2 As shown in Figures 1 and 3, in a specific embodiment of the present invention, the first guide portion 1113 extends along the width direction (i.e., the Y-axis direction) of the base 11, and the first limiting portion 1114 is formed within the first guide portion 1113.

[0068] In other embodiments, the first guide portion 1113 is configured as a protrusion facing the fuel cell stack, while the first limiting portion 1114 is a blind groove formed in the protrusion. Of course, in other embodiments, the first limiting portion 1114 may also be a protrusion, and the first guide portion 1113 may be a blind groove. The first limiting portion 1114 may also not be provided on the first guide portion 1113; the positional relationship between the first guide portion 1113 and the first limiting portion 1114 is arranged according to actual needs, which will not be elaborated further in this application. The first direction can be the stacking direction of the fuel cell stack or perpendicular to the stacking direction of the fuel cell stack.

[0069] Preferably, in this embodiment of the invention, the fuel cell stack structure is a two-section structure connected in series, so four first guide sections 1113 are provided. The first guide sections 1113 are arranged parallel to the first side plate 13 and the second side plate 14, and are used to coarsely position each section of the fuel cell stack structure. The first limiting section 1114 is opened in the first guide section 1113, and the depth of the first limiting section 1114 is greater than the depth of the first guide section 1113. Thus, the first limiting section 1114 can be used to further limit and fix the fuel cell stack structure.

[0070] Specifically, the support structure 15 is provided with one or more of the following: a hydrogen sensor mounting position, a temperature sensor mounting position, and a humidity sensor mounting position.

[0071] Please see Figure 7 As shown in the embodiment of the present invention, a monitoring sensor 156 is connected to the support structure 15. The monitoring sensor 156 includes a hydrogen sensor, a temperature sensor, and a humidity sensor. The monitoring sensor 156 is fixedly connected to the side of the support structure 15 via a mounting plate 157. A PTC heater mounting position is provided on the upper surface for mounting a PTC heater 112.

[0072] The fuel cell stack enclosure 1 integrates corresponding monitoring sensors 156, which can detect the ambient temperature, humidity, and hydrogen concentration inside the enclosure. When the humidity of the enclosure space exceeds the set value, the PTC heater 112 is activated to heat the internal air to achieve dehumidification. When the temperature of the enclosure space is lower than the preset value, the PTC heater 112 is activated to raise the temperature of the enclosure space to maintain the temperature of the enclosure space. When the hydrogen concentration of the enclosure space reaches the preset value or reaches the preset time, the enclosure space is purged to remove hydrogen, ensuring the safe, reliable, and stable operation of the fuel cell stack.

[0073] Specifically, sealing strips 16 are provided at the connection between the base 11 and the upper cover plate 12, and at the connection between the upper cover plate 12 and the support structure 15.

[0074] Specifically, the support structure 15 includes a first side rod 152, a cross rod 151, and a second side rod 153 connected in sequence. The first side rod 152 and the second side rod 153 are located on the same side of the cross rod 151, such that the first side rod 152 and the second side rod 153 are located at opposite ends of the fuel cell stack and connected to the base 11.

[0075] Please see Figure 7 As shown, in a specific embodiment of the present invention, the bottom ends of the first side rod 152 and the second side rod 153 are connected to the side edge of the base body 111 in the width direction, and the top end of the cross rod 151 is connected to the inner wall of the upper cover plate 12.

[0076] Therefore, the support structure 15 is set as a U-shaped structure, which serves to form a support and fixing structure between the upper cover plate 12 and the base 11 to accommodate the fuel cell stack structure.

[0077] In yet another embodiment of the present invention, the support structure 15 is provided with a second limiting portion 155 for limiting the fuel cell stack. For specific embodiments of the present invention, please refer to... Figure 6 As shown, the second limiting part 155 is configured as a snap-fit ​​groove for connecting with the fixing structure on the upper surface of the fuel cell stack structure to limit and fix the fuel cell stack structure. In other embodiments, the second limiting part 155 of the support structure 15 may be formed by itself or a part of its structure, such as the fuel cell stack having a groove structure that snaps the support structure 15 into place to achieve mutual limiting installation.

[0078] As a preferred embodiment of the present invention, the support structure 15 is an insulating support structure.

[0079] Specifically, the base 11 includes a plate-shaped base body 111 and a first side plate 13 and a second side plate 14 that are opposite each other and connected to both ends of the base body 111. The first side plate 13 and the second side plate 14 block the two sides of the encapsulation space enclosed by the base body 111 and the upper cover plate 12.

[0080] Thus, the first side plate 13 and the second side plate 14 are respectively connected to the two ends of the encapsulation space formed by the combination of the base body 111 and the upper cover plate 12 to form a closed space.

[0081] Please see Figure 1 , 2 As shown in Figure 3, in a specific embodiment of the present invention, the base 11 includes a base body 111. The base body 111 has a first sealing groove 1111 extending along the length direction of the base body 111 on both sides in the width direction. The first sealing groove 1111 is suitable for filling with sealing strip 16. This arrangement can completely seal the connection between the upper cover plate 12 and the base 11.

[0082] Specifically, the fuel cell stack housing 1 also includes a hydrogen-air-liquid dielectric piping structure and an electrical piping structure, wherein:

[0083] The hydrogen-air-liquid medium pipeline structure includes a first hydrogen-air-liquid inlet connector 142 and a first hydrogen-air-liquid outlet connector 143 installed on one of the first side plate 13 and the second side plate 14. The first hydrogen-air-liquid inlet connector 142 and the first hydrogen-air-liquid outlet connector 143 are respectively connected to the hydrogen-air-liquid inlet pipeline and the hydrogen-air-liquid outlet pipeline of the fuel cell stack. The electrical pipeline structure includes a power input port 132, a power output port 133, a communication interface 134, and a sensor interface 135 installed on the other of the first side plate 13 and the second side plate 14. The power input port 132 is used to supply power to the fuel cell stack, the power output port 133 is used to output the voltage generated by the stack to the load, and the communication interface 134 is used to establish a communication connection with the stack.

[0084] Because the hydrogen-air-liquid medium pipeline structure and the electrical pipeline structure are located on different side plates of the fuel cell stack housing 1 arranged opposite each other along the stack stack stack direction, the gas pipeline and the electrical circuit are located on opposite sides of the fuel cell, achieving gas-electric separation. This improves the stability and safety of the fuel cell stack operation and minimizes potential safety hazards. Furthermore, one of the first side plate 13 and the second side plate 14 is provided with a purge inlet, and the other of the first side plate 13 and the second side plate 14 is provided with a purge outlet; both the purge inlet and the purge outlet are connected to the encapsulation space. In practical applications, when the hydrogen sensor detects that the hydrogen concentration in the encapsulation space reaches a set value, gas (not hydrogen, but can be air, inert gas, etc.) is purged towards the encapsulation space through the purge inlet, causing the gas in the encapsulation space to flow out through the purge outlet, thereby ensuring that the hydrogen concentration in the encapsulation space is limited to a safe range. The purge inlet is lower than the purge outlet along the Z-axis direction to ensure the purging effect. The purge outlet is preferably installed on the same side plate as the first hydrogen-air-liquid inlet connector 142 and the first hydrogen-air-liquid outlet connector 143, thereby ensuring complete gas-electric isolation and greatly improving the safety of the fuel cell.

[0085] In some embodiments, based on, but not limited to, the above embodiments, the fuel cell stack housing 1 further includes a support frame 17 mounted on the support structure 15. The support frame 17 is provided with a wiring harness mounting position, which facilitates the wiring arrangement of the packaging space. The electrical conduit structure also includes a CVM detection device interface.

[0086] Please see Figure 7 As shown, in this specific embodiment, the support frame 17 includes a transverse slot frame body 171 and side connecting plates 172 connected to both sides of the transverse slot frame body 171. One end of the transverse slot frame body 171 is connected to the side rod end face of the support structure 15 through the side connecting plate 172, and the other end is connected to the inner wall surface of the first side plate 13 or the second side plate 14 through the side connecting plate 172. The transverse slot frame body 171 is also provided with evenly distributed wiring holes 173, which facilitate the installation of electrical lines for housing electrical conduit structures.

[0087] Since the support structure 15 is vertically spanning the edge of the base body 111 in the width direction, and the support structure 15 is relatively narrow, in order to further enhance the structural strength of the fuel cell stack packaging shell 1, a support frame 17 is also connected between the support structure 15 and the inner wall surface of the first side plate 13 or the second side plate 14 to stabilize the structure of the fuel cell stack packaging shell 1.

[0088] Please see Figure 7 As shown, in a specific embodiment of the present invention, the support structure 15 is provided with a fourth sealing groove 154 and a second limiting part 155. The fourth sealing groove 154 is located on the outer contour surface of the support structure 15, and the second limiting part 155 faces the upper surface of the fuel cell stack.

[0089] Thus, the connection between the support structure 15 and the battery pack housing 1 is sealed by the fourth sealing groove 154, and the second limiting part 155 can be easily connected to the fixing structure on the surface of the battery pack.

[0090] Please see Figure 1 , 2 As shown, in a specific embodiment of the present invention, the base 11 has a first sealing groove 1111 and a first connecting groove 1112 on each side along the length direction, with the first sealing groove 1111 located above the first connecting groove 1112.

[0091] Since the upper cover plate 12 includes a cover plate body 121 and a first side cover plate 122 and a second side cover plate 123 that are integrally connected to both sides of the cover plate body 121 along its length, when it is necessary to fix the upper cover plate 12 to the base 11, the bottom screws of the first side cover plate 122 and the second side cover plate 123 are connected to the side edge of the base body 111 through the first connecting groove 1112.

[0092] Specifically, the encapsulation housing also includes a hydrogen-air-liquid medium pipeline structure, which includes a first hydrogen-air-liquid inlet connector 142 and a first hydrogen-air-liquid outlet connector 143 installed on one of the first side plate 13 and the second side plate 14. The first hydrogen-air-liquid inlet connector 142 and the first hydrogen-air-liquid outlet connector 143 are respectively connected to the gas inlet pipeline and the gas outlet pipeline of the fuel cell stack to form a gas pipeline.

[0093] Specifically, the encapsulation housing also includes an electrical mounting structure, which includes a power input port 132, a power output port 133, a communication interface 134, and a sensor interface 135 mounted on one of the first side plate 13 and the second side plate 14. The hydrogen-air-liquid medium pipeline structure and the electrical mounting structure are located on different side plates of the fuel cell, so that the gas pipeline and the electrical circuit are located on both sides of the fuel cell, thereby achieving gas-electric separation.

[0094] Please see Figure 2 , 3 As shown, in a specific embodiment of the present invention, the first side plate 13 and the second side plate 14 are respectively connected to both sides of the fuel cell stack structure. The first side plate 13 is provided with a first hydrogen-air-liquid inlet connector 142 and a first hydrogen-air-liquid outlet connector 143. The fuel cell stack structure is provided with a hydrogen-air-liquid medium discharge channel and a hydrogen-air-liquid medium discharge channel. The first hydrogen-air-liquid inlet connector 142 and the first hydrogen-air-liquid outlet connector 143 are respectively connected to the hydrogen-air-liquid medium discharge channel and the hydrogen-air-liquid medium discharge channel through pipes.

[0095] In addition, in this embodiment, the first side plate 13 is also provided with a first handle 131, a power input port 132, a power output port 133, a communication interface 134 and a sensor interface 135. The first handle 131 facilitates the user's access, the power input port 132 and the power output port 133 are used to provide power to the interior, the communication interface 134 is used to realize communication connection with the outside, and the sensor interface 135 is used for electrical connection with the internal sensor.

[0096] The second side plate 14 is also provided with a second handle 141, a first hydrogen-air liquid inlet connector 142 and a first hydrogen-air liquid outlet connector 143. The second handle 141 is symmetrically arranged with the first handle 131, which is also convenient for users to pick up and put down. The first hydrogen-air liquid inlet connector 142 and the first hydrogen-air liquid outlet connector 143 are respectively connected to the medium discharge channel and the medium discharge channel through pipes.

[0097] Finally, a second sealing groove 136 is provided on the first side plate 13, and a third sealing groove 144 is provided on the second side plate 14. It is understood that, to achieve a complete seal between the housing and the outside, both the second sealing groove 136 and the third sealing groove 144 are filled with sealing strips 16. Specifically, the sealing strips 16 are integrally formed. The sealing strips 16 at the contact points between the upper cover plate 12 and the support structure 15, and at the contact points between the upper cover plate 12 and the first side plate 13, the second side plate 14, and the base body 111, are integrally formed, thereby ensuring a complete seal at the connection points of the fuel cell stack housing 1, without any sealing breaks, achieving full enclosure of the packaging space, and providing excellent sealing performance. Preferably, the sealing strip 16 is wrapped around the connector used to connect the upper cover plate 12 and the support structure 15, and the connector used to connect the upper cover plate 12 to the first side plate 13, the second side plate 14, and the base body 111 is arranged (i.e., the sealing strip 16 is a perforated strip, and the connector is located in its perforated part), thereby ensuring that there are no connection leakage points at the connection of the fuel cell stack encapsulation shell 1, further improving its sealing performance. Correspondingly, the contact points between the support structure 15, the first side plate 13, the second side plate 14, the base body 111 and the upper cover plate 12 are provided with sealing grooves for accommodating the sealing strip 16. The sealing groove is composed of two sub-sealing grooves respectively disposed on both sides of the connection part with the connection hole, and the sealing groove facilitates the installation of the sealing strip 16. The connection part protrudes from the sealing groove, so that although the connection between the upper cover plate 12 and the support structure 15, the first side plate 13, the second side plate 14 and the base body 111 is a rigid connection, the presence of the sealing strip 16 makes the contact a flexible contact, improving the impact resistance of the fuel cell.

[0098] Another embodiment of the present invention provides a fuel cell, the fuel cell including a stack and the stack encapsulation housing 1 described above, the stack being fixedly installed in the stack encapsulation housing 1 by a first limiting part 1114 and a support structure 15.

[0099] The fuel cell has the same effect as the stack encapsulation housing 1 described above, and will not be described in detail here.

[0100] While the present invention has been disclosed above, its scope of protection is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the scope of protection of this invention.

Claims

1. A stack packaging case characterized by comprising: The base (11) is provided with a first limiting part (1114) on the upper surface near one side of the stack, which is matched with the stack to limit the translation of the stack on the base (11); the upper surface is provided with a first guide part (1113) matched with the stack; the first guide part (1113) is a guide groove extending along a first direction of the base (11), which is used to restrict the assembly direction of the stack on the base (11); the first limiting part (1114) is a blind groove provided on the bottom surface of the guide groove, and at least two first limiting parts (1114) are arranged at intervals along a second direction of the base (11); wherein the first direction and the second direction are arranged vertically; or, The first guide part (1113) is a guide groove extending along a first direction of the base (11), which is used to restrict the assembly direction of the stack on the base (11); the first limiting part (1114) is a blind groove provided on the bottom surface of the guide groove, and at least two first limiting parts (1114) are arranged at intervals along a second direction of the base (11); wherein the first direction and the second direction are arranged vertically; at least one first limiting part (1114) has a size along the stacking direction of the stack greater than the size of the positioning block corresponding to the stack along the stacking direction; the size of at least one first limiting part (1114) is matched with the size of the positioning block corresponding to the stack; The upper cover plate (12) is arranged on the base (11), and the base (11) and the upper cover plate (12) jointly form an encapsulation space of the stack; and The support structure (15) is arranged in the encapsulation space and is arranged on opposite ends of the stack to form an internal support of the encapsulation shell of the stack and restricts the stack by cooperating with the first limiting part (1114). The support structure (15) is provided with one or more of a hydrogen sensor mounting position, a temperature sensor mounting position, and a humidity sensor mounting position; and / or The support structure (15) comprises a first side rod (152), a cross rod (151), and a second side rod (153) connected in sequence, the first side rod (152) and the second side rod (153) are arranged on the same side of the cross rod (151), so that the first side rod (152) and the second side rod (153) are arranged on opposite ends of the stack and are connected with the base (11); and / or 2. The stack packaging case according to claim 1, characterized by: The support structure (15) is provided with a second limiting part for limiting the stack; and / or The support structure (15) is an insulating support structure; and / or The upper surface is provided with a PTC heater mounting position. The connection between the base (11) and the upper cover plate (12) and the connection between the upper cover plate (12) and the support structure (15) are provided with a sealing rubber strip (16). The sealing rubber strip (16) is integrally formed; and / or 3. The stack packaging case according to any one of claims 1-2, characterized by: The sealing rubber strip (16) is arranged around a connecting piece used for connecting the upper cover plate 4. The stack packaging case according to claim 3, characterized by: ​ ​ (12) with the base (11) and the support structure (15).

5. The stack packaging case according to any one of claims 1 to 2 or 4, characterized by: The base (11) comprises a base body (111) in the shape of a plate, and a first side plate (13) and a second side plate (14) arranged opposite to each other and connected to both ends of the base body (111), the first side plate (13) and the second side plate (14) being arranged on both sides of the packaging space enclosed by the base body (111) and the upper cover plate (12).

6. The stack packaging case according to claim 5, characterized by: Further comprising: a hydrogen-air liquid medium pipeline structure, the hydrogen-air liquid medium pipeline structure comprising a first hydrogen-air liquid inlet joint (142) and a first hydrogen-air liquid outlet joint (143) mounted on one of the first side plate (13) and the second side plate (14), the first hydrogen-air liquid inlet joint (142) and the first hydrogen-air liquid outlet joint (143) being in corresponding communication with the hydrogen-air liquid inlet pipeline and the hydrogen-air liquid outlet pipeline of the stack, respectively; and an electrical pipeline structure, the electrical pipeline structure comprising a power input port (132), a power output port (133), a communication interface (134), and a sensor interface (135) mounted on the other of the first side plate (13) and the second side plate (14), the power input port (132) being configured to supply power to the stack, the power output port (133) being configured to output the voltage generated by the stack to a load, and the communication interface (134) being configured to establish a communication connection with the stack; and / or one of the first side plate (13) and the second side plate (14) is provided with a purge inlet, and the other of the first side plate (13) and the second side plate (14) is provided with a purge outlet, the purge inlet and the purge outlet being in communication with the packaging space.

7. The stack packaging case according to any one of claims 1 to 2 or 4 or 6, characterized by: Further comprising a support frame (17) mounted on the support structure (15), the support frame (17) being provided with a wire bundling mounting position.

8. A fuel cell characterized by comprising: The application further comprises the stack packaging shell and the stack, the stack being fixedly installed in the stack packaging shell through the first limiting part (1114) and the support structure (15).

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