Electrochemical cell stack assembly

Abstract

An electrochemical cell stack assembly is disclosed. The electrochemical cell stack assembly comprises a first end plate, a second end plate, a cell stack body and an adjusting device, wherein the first end plate and the second end plate are arranged at an interval in a first direction; the cell stack body is arranged between the first end plate and the second end plate, one end of the cell stack body is fixed with the second end plate, and the other end of the cell stack body and the first end plate are arranged at an interval; the adjusting device is arranged at the other end of the cell stack body or one side, facing the cell stack body, of the first end plate; and the length of the adjusting device in the first direction is adjustable so as to be selectively supported between the first end plate and the cell stack body. According to the electrochemical cell stack assembly, the adjusting device is arranged as a compensation mechanism to be connected between the first end plate and the cell stack body, so that the structural stability of the electrochemical cell stack assembly is improved, and the assembly difficulty of the electrochemical cell stack assembly is reduced.

Description

Technical Field

[0001] The present invention relates to the field of electrochemical cells, and in particular to an electrochemical cell stack assembly. Background Art

[0002] A fuel cell stack generally includes a plurality of fuel cells stacked on top of each other and kept in a compressed form. In the stack compression process, the thickness tolerance of electrochemical stack components such as MEA, BPP, and seals significantly affects the total length of the stack. At present, most fuel cell stacks are fixed in a fixed length housing after compression. Since the length of the stack is different during compression, some compensation mechanisms are required to ensure that the final stack length is consistent. However, the compensation mechanism in the prior art is affected by the initial stack length, which makes the compensation mechanism unable to be mass-produced, and even the structure is not compact when combined with the stack. Summary of the invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an electrochemical battery stack assembly. The electrochemical battery stack assembly according to the present invention improves the structural stability of the electrochemical battery stack assembly by setting a first end plate and a second end plate to limit the length of the electrochemical battery stack assembly, setting a battery stack body between the first end plate and the second end plate, and setting an adjustment device as a compensation mechanism connected between the first end plate and the battery stack body, while the adjustment device has universality, low cost, and reduces the difficulty of assembling the electrochemical battery stack assembly.

[0004] According to the present invention, the electrochemical battery stack assembly includes a first end plate, a second end plate, a battery stack body and an adjusting device, wherein the first end plate and the second end plate are spaced apart in a first direction; the battery stack body is arranged between the first end plate and the second end plate and one end of the battery stack body is fixed to the second end plate, and the other end of the battery stack body is spaced apart from the first end plate; the adjusting device is arranged at the other end of the battery stack body or at a side of the first end plate facing the battery stack body, and the length of the adjusting device in the first direction is adjustable so as to be optionally supported between the first end plate and the battery stack body.

[0005] According to one embodiment of the present invention, a first end plate and a second end plate are spaced apart in a first direction in an electrochemical cell stack assembly to limit the overall length of the electrochemical cell stack assembly in the first direction. At the same time, a cell stack body is disposed between the first end plate and the second end plate and one end of the cell stack body is fixed to the second end plate, while the other end of the cell stack body is spaced apart from the first end plate, so that a gap is left between the cell stack body and the first end plate to facilitate the assembly of other components.

[0006] In addition, the battery stack body is also constructed with an adjustment device as a compensation mechanism. The adjustment device is arranged at the other end of the battery stack body or the side of the first end plate facing the battery stack body. The length of the adjustment device in the first direction is adjustable so as to compensate for the difference between the battery stack body and the preset overall length of the electrochemical battery stack assembly as a compensation mechanism, thereby achieving the fixation of the battery stack. The setting of the adjustment device reduces the step of calculating the size of the compensation mechanism according to the length of the battery stack body in advance during the assembly of the electrochemical battery stack assembly. Instead, after the assembly is completed, the length of the adjustment device in the first direction is adjusted to compensate for the length difference between the battery stack body and the electrochemical battery stack assembly, thereby achieving the fixation of the battery stack body, reducing the difficulty of assembly and improving the structural compactness of the electrochemical battery stack assembly. In addition, the initial length of the adjustment device is a preset value during processing, which is not affected by the battery stack body during assembly, has universality, requires fewer processing molds, is low in cost, and can be mass-produced.

[0007] According to one embodiment of the present invention, the adjustment device includes a first mating portion and a second mating portion, the first mating portion is connected to the first end plate; the second mating portion is connected to the battery stack body, wherein the first mating portion and the second mating portion are movably connected to adjust the length of the adjustment device in a first direction.

[0008] According to one embodiment of the present invention, the first mating portion is configured as a screw sleeve, and a first thread is provided on the inner circumference of the screw sleeve; the second mating portion is configured as a stud, and a second thread suitable for engaging with the first thread is provided on the outer circumference of the stud; the first thread and the second thread cooperate and can selectively move away from or close to each other to adjust the length of the adjusting device.

[0009] According to one embodiment of the present invention, a through hole is provided on the first end plate, and a polygonal matching hole corresponding to the through hole is provided on one end of the screw sleeve close to the first end plate.

[0010] According to one embodiment of the present invention, a limiting portion is formed at the other end of the screw sleeve, and the adjusting device also includes an elastic member, which is sleeved on the outer circumference of the screw sleeve, one end of the elastic member abuts against the first end plate, and the other end of the elastic member abuts against the limiting portion.

[0011] According to an embodiment of the present invention, the elastic member is configured as a disc spring.

[0012] According to an embodiment of the present invention, a sink groove is provided on the first end plate, the through hole is formed on the bottom wall of the sink groove, and one end of the elastic member is received in the sink groove.

[0013] According to an embodiment of the present invention, the threaded sleeve, the stud, the countersunk groove and the elastic member are all constructed in a one-to-one correspondence.

[0014] According to one embodiment of the present invention, the electrochemical battery stack assembly further comprises a support plate, the support plate is matched with the other end of the battery stack body and a plurality of the studs are spaced apart and arranged on the support plate.

[0015] According to one embodiment of the present invention, an insulating plate is provided at one end of the battery stack body facing the first end plate, the insulating plate is spaced apart from the first end plate, a groove is formed on the insulating plate, and the support plate can be selectively embedded in the groove.

[0016] According to one embodiment of the present invention, the electrochemical cell stack assembly further includes a tie rod, wherein the tie rod is multiple and the multiple tie rods respectively connect the first end plate and the second end plate.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0019] Figure 1 is a structural diagram of an adjusting device according to an embodiment of the present invention;

[0020] Figure 2 is a structural diagram of an electrochemical cell stack assembly according to an embodiment of the present invention;

[0021] Figure 3 is a structural diagram of an adjusting device according to an embodiment of the present invention;

[0022] Figure 4 is an exploded view of an electrochemical cell stack assembly according to an embodiment of the present invention.

[0023] Reference numerals:

[0024] An electrochemical cell stack assembly 1;

[0025] A first end plate 11, a sink 111, and a through hole 1111;

[0026] A second end plate 12;

[0027] Battery stack body 13;

[0028] The adjusting device 14, the first matching portion 141, the limiting portion 1411, and the second matching portion 142;

[0029] Elastic member 15;

[0030] Support plate 16;

[0031] Pull rod 17 , insulating plate 101 , groove 102 . DETAILED DESCRIPTION

[0032] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0033] A fuel cell stack generally includes a plurality of fuel cells stacked on top of each other and kept in a compressed form. In the stack compression process, the thickness tolerance of electrochemical stack components such as MEA, BPP, and seals significantly affects the total length of the stack. At present, most fuel cell stacks are fixed in a fixed length housing after compression. Since the length of the stack is different during compression, some compensation mechanisms are required to ensure that the final stack length is consistent. However, the compensation mechanism in the prior art is affected by the initial stack length, which makes the compensation mechanism unable to be mass-produced, and even the structure is not compact when combined with the stack.

[0034] Reference below Figure 1-Figure 4 An electrochemical cell stack assembly 1 according to an embodiment of the present invention is described.

[0035] According to the present invention, the electrochemical cell stack assembly 1 includes a first end plate 11, a second end plate 12, a cell stack body 13 and an adjusting device 14, wherein the first end plate 11 and the second end plate 12 are spaced apart in a first direction; the cell stack body 13 is arranged between the first end plate 11 and the second end plate 12 and one end of the cell stack body 13 is fixed to the second end plate 12, and the other end of the cell stack body 13 is spaced apart from the first end plate 11; the adjusting device 14 is arranged at the other end of the cell stack body 13 or at a side of the first end plate 11 facing the cell stack body 13, and the length of the adjusting device 14 in the first direction is adjustable so as to be optionally supported between the first end plate 11 and the cell stack body 13.

[0036] According to one embodiment of the present invention, the electrochemical battery stack assembly 1 is provided with a first end plate 11 and a second end plate 12 spaced apart in a first direction to define the overall length of the electrochemical battery stack assembly 1 in the first direction. At the same time, the battery stack body 13 is provided between the first end plate 11 and the second end plate 12, and one end of the battery stack body 13 is fixed to the second end plate 12, and the other end of the battery stack body 13 is spaced apart from the first end plate 11, so that a gap is left between the battery stack body 13 and the first end plate 11 to facilitate the assembly of other components. In addition, the battery stack body 13 is also constructed with an adjustment device 14 as a compensation mechanism. The adjustment device 14 is provided at the other end of the battery stack body 13 or at the side of the first end plate 11 facing the battery stack body 13. The length of the adjustment device 14 in the first direction is adjustable, so as to compensate for the difference between the battery stack body 13 and the preset overall length of the electrochemical battery stack assembly 1 as a compensation mechanism, thereby achieving the fixation of the battery stack. The setting of the adjustment device 14 reduces the step of calculating the size of the compensation mechanism according to the length of the battery stack body 13 in advance during the assembly of the electrochemical battery stack assembly 1. Instead, after the assembly is completed, the length of the adjustment device 14 in the first direction is adjusted to compensate for the length difference between the battery stack body 13 and the electrochemical battery stack assembly 1, thereby achieving the fixation of the battery stack body 13, reducing the difficulty of assembly and improving the compactness of the structure of the electrochemical battery stack assembly 1. In addition, the initial length of the adjustment device 14 is a preset value during processing, which is not affected by the battery stack body 13 during assembly, has universality, requires fewer processing molds, is low in cost, and can be mass-produced.

[0037] According to one embodiment of the present invention, the adjusting device 14 includes a first matching portion 141 and a second matching portion 142, the first matching portion 141 is connected to the first end plate 11; the second matching portion 142 is connected to the battery stack body 13, wherein the first matching portion 141 and the second matching portion 142 are movably connected to adjust the length of the adjusting device 14 in the first direction.

[0038] Since the length of the adjusting device 14 in the first direction is adjustable, the structure of the adjusting device 14 will affect the stability of its connection with the first end plate 11 and / or the battery stack body 13. Specifically, the adjusting device 14 is constructed with a first mating portion 141 and a second mating portion 142, the first mating portion 141 is connected to the side of the first end plate 11 facing the battery stack body 13, and the second mating portion 142 is connected to the battery stack body 13, and the first mating portion 141 and the second mating portion 142 can move relative to each other to increase or decrease the length of the adjusting device 14 in the first direction, so as to realize the compensation of the length difference between the battery stack body 13 and the electrochemical battery stack assembly 1 by the adjusting device 14, and the battery stack body 13 is connected to the first end plate 11 through the adjusted adjusting device 14 and ensure that the spacing between the first end plate 11 and the second end plate 12 meets the preset value, where the preset value can be understood as the distance from the first end plate 11 to the second end plate 12 under the predetermined total length so that the total length of the electrochemical battery stack assembly 1 meets the distance from the first end plate 11 to the second end plate 12. The design of the first mating portion 141 and the second mating portion 142 improves the compactness of the internal structural connection of the electrochemical cell stack assembly 1 .

[0039] According to one embodiment of the present invention, the first matching portion 141 is configured as a screw sleeve, and a first thread is provided on the inner circumference of the screw sleeve. The second matching portion 142 is configured as a stud, and a second thread suitable for engaging with the first thread is provided on the outer circumference of the stud. The first thread cooperates with the second thread and can be selectively moved away from or close to each other to adjust the length of the adjusting device 14.

[0040] Since the first matching portion 141 and the second matching portion 142 move relative to each other after matching to adjust the length of the adjusting device 14, the structure of the first matching portion 141 and the second matching portion 142 will affect the length adjustment of the adjusting device 14. Specifically, the first matching portion 141 is configured as a screw sleeve, and the second matching portion 142 is configured as a stud, and the screw sleeve can be sleeved on at least part of the outer periphery of the stud. The inner periphery of the screw sleeve is provided with a first thread, and the outer periphery of the stud is provided with a second thread. The first thread and the second thread can mesh with each other. When the adjusting device 14 is working, the thread matching between the screw sleeve and the stud rotates relative to each other, increasing / decreasing the length of the adjusting device 14, so that the two ends of the adjusting device 14 stop against the first end plate 11 and the other end of the battery stack body 13 in the first direction, thereby improving the compactness of the structure of the electrochemical battery stack assembly 1. The threaded connection method makes the adjustment between the first matching portion 141 and the second matching portion 142 more convenient, and the adjustment process is more stable.

[0041] According to one embodiment of the present invention, a through hole 1111 is provided on the first end plate 11, and a polygonal matching hole corresponding to the through hole 1111 is provided at one end of the screw sleeve close to the first end plate 11. Since relative rotation needs to occur between the screw sleeve and the stud, and the rotation requires external force to drive it, the structure of the first end plate 11 will affect the driving of the external force on it. Specifically, a through hole 1111 is provided on the first end plate 11, and a polygonal hole corresponding to the through hole 1111 is provided at one end of the screw sleeve close to the first end plate 11, and the aperture of the polygonal hole is smaller than the aperture of the through hole 1111. When the length of the adjusting device 14 needs to be adjusted during the assembly of the battery stack, it is only necessary to use a tool corresponding to the polygonal hole to pass through the through hole 1111 from the outside of the first end plate 11 and extend into the polygonal hole, and rotate the tool after engaging with the polygonal hole to drive the screw sleeve to rotate relative to the stud, so as to adjust the length of the adjusting device 14. In some instances, the polygonal hole can be a hexagonal hole, and the tool matched therewith can be a hexagonal wrench. The design of the polygonal hole facilitates the compensation of the distance between the battery stack body 13 and the first end plate 11 by the adjustment device 14 after the battery stack body 13 is assembled, thereby reducing the difficulty of assembly. The design of the through hole 1111 makes the use of tools more convenient during the adjustment process.

[0042] According to one embodiment of the present invention, a limiting portion 1411 is formed at the other end of the screw sleeve, and the adjusting device 14 further includes an elastic member 15, which is sleeved on the outer periphery of the screw sleeve, one end of the elastic member 15 abuts against the first end plate 11, and the other end of the elastic member 15 abuts against the limiting portion 1411. Since the adjusting device 14 after the screw sleeve and the stud rotate relative to each other, the screw sleeve and the stud cooperate to abut against the first end plate 11 and the other end of the battery stack body 13, and therefore, the structure of the adjusting device 14 will affect the stability of its connection with the first end plate 11 and the other end of the battery stack body 13. Specifically, the adjusting device 14 further includes an elastic member 15. In some embodiments, the elastic member 15 can be constructed as a spring, which is sleeved on the outer periphery of the screw sleeve, and a limiting portion 1411 is provided at one end of the screw sleeve away from the first end plate 11, and the limiting portion 1411 can abut against the spring to prevent the spring from falling off the screw sleeve. After the length of the adjusting device 14 is adjusted by rotating the sleeve, the sleeve stops at the first end plate 11, and the stud is connected to the other end of the battery stack body 13. The spring is compressed during the adjustment of the sleeve. The compressed spring applies two equal and opposite forces to the sleeve and the first end plate 11 in the first direction, respectively, thereby improving the connection stability between the adjusting device 14 and the first end plate 11 and the other end of the battery stack body 13.

[0043] According to one embodiment of the present invention, the elastic member 15 is configured as a disc spring, which has high rigidity, strong buffering and vibration absorbing capability, and can withstand large loads with small deformation, which is compatible with the small space for assembling the elastic member 15 of the present invention.

[0044] According to one embodiment of the present invention, a sink 111 is provided on the first end plate 11, a through hole 1111 is formed on the bottom wall of the sink 111, and one end of the elastic member 15 is received in the sink 111. Specifically, a sink 111 is provided on the first end plate 11, and a through hole 1111 is formed on the bottom wall of the sink 111. In the above embodiment, after the elastic member 15 is compressed, the connection stability between the adjustment device 14 and the first end plate 11 and the other end of the battery stack body 13 is improved. At this time, one end of the elastic member 15 is stopped against the limiting portion 1411, and the other end of the elastic member 15 can be received in the sink 111. The design of the sink 111 improves the stability of the elastic member 15 when providing elastic force.

[0045] According to one embodiment of the present invention, the screw sleeve, the stud, the sinker 111 and the elastic member 15 are all constructed as a plurality of one-to-one correspondence. Since the adjustment device 14 serves as a compensation mechanism between the first end plate 11 and the battery stack body 13, the number and position arrangement of its structural components will affect the stability of the final electrochemical battery stack assembly 1 assembly. Specifically, the screw sleeve, the stud, the sinker 111 and the elastic member 15 are all constructed as a plurality of one-to-one correspondence, and the plurality of sinkers 111 are evenly spaced in the circumferential direction of the first end plate 11, and the plurality of screw sleeves and the plurality of elastic members 15 are all matched with the corresponding sinkers 111 in the first direction, and at the same time, each stud is also matched with the corresponding screw sleeve to ensure that the adjustment device 14 can be stably connected with the first end plate 11 and the battery stack body 13 after adjustment.

[0046] According to one embodiment of the present invention, the electrochemical battery stack assembly 1 further includes a support plate 16, the support plate 16 cooperates with the other end of the battery stack body 13 and a plurality of studs are spaced apart on the support plate 16. Since the studs are connected to the other end of the battery stack body 13, the connection method between the studs and the battery stack body 13 will affect the safety of the battery. Specifically, the electrochemical battery stack assembly 1 is provided with a support plate 16 between the battery stack body 13 and the studs, the studs are connected to the support plate 16 by welding or the like, and a plurality of studs are spaced apart on the support plate 16. The provision of the support plate 16 avoids direct contact between the studs and the battery stack body 13, ensures that the adjustment process of the adjustment device 14 does not affect the battery stack body 13, and improves the safety of the electrochemical battery stack assembly 1.

[0047] According to one embodiment of the present invention, an insulating plate 101 is provided at one end of the battery stack body 13 facing the first end plate 11, the insulating plate 101 is spaced apart from the first end plate 11, a groove 102 is formed on the insulating plate 101, and the support plate 16 can be selectively embedded in the groove 102. Since the support plate 16 cooperates with the other end of the battery stack body, the cooperation mode between the support plate and the battery stack body will affect the stability of the support plate 16. The electrochemical battery stack assembly 1 also has an insulating plate 101 provided at the other end of the battery stack body, and a groove 102 is formed on the insulating plate 101. During assembly, the support plate 16 can be embedded in the groove 102, and the provision of the insulating plate 101 improves the stability of the assembly of the support plate 16.

[0048] According to one embodiment of the present invention, the electrochemical battery stack assembly 1 further includes a tie rod 17, which is configured as a plurality of tie rods 17, and the plurality of tie rods 17 respectively connect the first end plate 11 and the second end plate 12. Since the spacing between the first end plate 11 and the second end plate 12 is a preset fixed value, other components are required to limit it. Specifically, the electrochemical battery stack assembly 1 also constructs a tie rod 17, which is configured as a fixed length, and its length can be obtained according to the preset length of the electrochemical battery stack assembly 1. At the same time, the tie rod 17 is configured as a plurality of tie rods, and both ends of each tie rod 17 are respectively connected to the first end plate 11 and the second end plate 12 at the same time, thereby improving the connection strength between the first end plate 11 and the second end plate 12, and ensuring that the distance between the first end plate 11 and the second end plate 12 meets the preset length of the electrochemical battery stack assembly 1, thereby improving the stability of the structure of the electrochemical battery stack assembly 1.

[0049] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0050] In the description of the present invention, "first feature" or "second feature" may include one or more of the features.

[0051] In the description of the present invention, "plurality" means two or more.

[0052] In the description of the present invention, a first feature being “on” or “under” a second feature may include that the first and second features are directly in contact with each other, or may include that the first and second features are not in direct contact with each other but are in contact with each other via another feature therebetween.

[0053] In the description of the present invention, “on”, “over” and “above” a first feature from a second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is horizontally higher than the second feature.

[0054] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0055] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An electrochemical cell stack assembly, characterized in that: include: a first end plate and a second end plate, wherein the first end plate and the second end plate are spaced apart in a first direction; A battery stack body, wherein the battery stack body is disposed between the first end plate and the second end plate, one end of the battery stack body is fixed to the second end plate, and the other end of the battery stack body is spaced apart from the first end plate; An adjusting device is provided at the other end of the battery stack body or at a side of the first end plate facing the battery stack body, and the length of the adjusting device in a first direction is adjustable so as to be optionally supported between the first end plate and the battery stack body.

2. The electrochemical cell stack assembly according to claim 1, characterized in that: The regulating device comprises: a first matching portion, the first matching portion being connected to the first end plate; A second mating portion, the second mating portion is connected to the battery stack body, wherein The first matching portion and the second matching portion are movably connected to adjust the length of the adjustment device in a first direction.

3. The electrochemical cell stack assembly according to claim 2, characterized in that: The first mating portion is configured as a threaded sleeve, and a first thread is provided on the inner circumference of the threaded sleeve. The second mating portion is configured as a stud, and a second thread suitable for engaging with the first thread is provided on the outer circumference of the stud. The first thread and the second thread cooperate and can be selectively moved away from or close to each other to adjust the length of the adjusting device.

4. The electrochemical cell stack assembly according to claim 3, characterized in that: The first end plate is provided with a through hole, and the end of the screw sleeve close to the first end plate is provided with a polygonal matching hole corresponding to the through hole.

5. The electrochemical cell stack assembly according to claim 4, characterized in that: The other end of the screw sleeve forms a limited position portion, and the adjusting device further comprises: An elastic member is sleeved on the outer circumference of the screw sleeve, one end of the elastic member abuts against the first end plate, and the other end of the elastic member abuts against the limiting portion.

6. The electrochemical cell stack assembly according to claim 5, characterized in that: The elastic element is configured as a disc spring.

7. The electrochemical cell stack assembly according to claim 5, characterized in that: The first end plate is provided with a sinking groove, the bottom wall of the sinking groove is formed with the through hole, and one end of the elastic member is received in the sinking groove.

8. The electrochemical cell stack assembly according to claim 7, characterized in that: The threaded sleeve, the stud, the sink and the elastic member are all constructed in a one-to-one correspondence.

9. The electrochemical cell stack assembly according to claim 3, characterized in that: Also includes: A support plate is matched with the other end of the battery stack body and a plurality of studs are arranged at intervals on the support plate.

10. The electrochemical cell stack assembly according to claim 9, characterized in that An insulating plate is disposed at one end of the battery stack body facing the first end plate. The insulating plate is spaced apart from the first end plate. A groove is formed on the insulating plate, and the support plate can be selectively embedded in the groove.

11. The electrochemical cell stack assembly according to claim 1, wherein: Also includes: A tie rod is provided, wherein the tie rod is multiple and the multiple tie rods respectively connect the first end plate and the second end plate.

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