Splicing module, splicing base and battery module

Abstract

The invention relates to the technical field of batteries, in particular to a splicing module, a splicing base and a battery module. The first push rod assembly is connected to the first side and comprises a first push rod, the first push rod can move relative to the module body in the second direction, and the second direction and the first direction are arranged orthogonally. The second push rod assembly is connected to the second side and comprises a second push rod extending in the second direction. The inserting block is connected to the first side and provided with an inserting hole, and the second push rod can be driven by the first push rod to move in the second direction so as to be inserted into the inserting hole. The first push rod and the second push rod can move in the second direction. The first push rod of one splicing module can move in the second direction to abut against the second push rod of the adjacent splicing module, the second push rod is pushed in the second direction till the second push rod is inserted into the inserting hole of the inserting block, and therefore splicing is achieved. And the time consumed in the splicing process is short.

Description

Technical Field

[0001] This application relates to the field of battery technology, and in particular to a splicing module, a splicing base, and a battery module. Background Technology

[0002] With the development of new energy sources, more and more fields are adopting new energy as a power source. Due to its advantages such as high energy density, rechargeability, safety, and environmental friendliness, electrochemical devices are widely used in new energy vehicles, consumer electronics, energy storage systems, and other fields. Different usage scenarios have vastly different requirements for the power and capacity of battery packs. Small devices may only need one or two sets of batteries, while large devices require multiple sets of batteries connected in parallel or series to increase capacity or voltage.

[0003] In related technologies, splicing multiple battery groups requires a significant amount of time. Summary of the Invention

[0004] This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a splicing module, a splicing base, and a battery module, which can reduce the splicing time between multiple battery groups.

[0005] According to a first aspect embodiment of this application, a splicing module is used in the assembly of an electrochemical device, the splicing module comprising: The module body has a first side and a second side that are opposite to each other along a first direction; A first push rod assembly is connected to the first side. The first push rod assembly includes a first push rod extending along a second direction. The first push rod is movable relative to the module body along the second direction. The second direction is arranged orthogonally to the first direction. A second push rod assembly is connected to the second side, the second push rod assembly including a second push rod extending along the second direction; A plug-in block is connected to the first side. The plug-in block has a plug-in hole. Along the second direction, the plug-in block is located on the side of the second push rod opposite to the first push rod. The second push rod of the adjacent splicing module can move relative to the module body along the second direction under the drive of the first push rod to plug into the plug-in hole.

[0006] The splicing module according to the embodiments of this application has at least the following beneficial effects: In the embodiments of this application, the first push rod assembly includes a first push rod extending along a second direction, and the second push rod assembly includes a second push rod extending along the second direction. Both the first and second push rods are movable relative to the module body along the second direction. During the splicing of the modules, the first push rod of one splicing module can move along the second direction to abut against the second push rod of an adjacent splicing module, and push the second push rod along the second direction until the second push rod is inserted into the insertion hole of the insertion block, thereby achieving splicing. When the distance between the first push rod and the insertion block is constant, the second push rod assembly can shorten the distance the first push rod needs to move to achieve splicing, resulting in a shorter splicing time and higher splicing efficiency.

[0007] According to some embodiments of this application, the second push rod assembly further includes a first support member and an elastic member. The first support member is connected to the second side, and the elastic member is sleeved on the second push rod. The elastic member extends along the second direction, with one end of the elastic member abutting against the second push rod and the other end of the elastic member abutting against the first support member.

[0008] According to some embodiments of this application, the second side has a first clearance groove, a slide groove, and a second clearance groove extending along the second direction. The second push rod assembly is located in the slide groove. The first push rod can partially extend into the slide groove to push the second push rod. The first clearance groove and the second clearance groove are used to avoid the first push rod assembly and the plug block. Along the second direction, the slide groove is located between the first clearance groove and the second clearance groove.

[0009] According to some embodiments of this application, the second push rod assembly further includes a second support member, which is sleeved on the second push rod and abuts against the interior of the slide groove. Along the second direction, the second support member is located at the end of the second push rod away from the first clearance groove. When the second push rod is inserted into the insertion hole, the second support member abuts against the insertion block.

[0010] According to some embodiments of this application, along the second direction, the module body has opposing first and second surfaces, the first clearance groove is located on the side of the slide groove facing the first surface, and the first clearance groove extends along the second direction to the first surface to form an opening.

[0011] According to some embodiments of this application, the first push rod assembly further includes a fixing block connected to the first side, the first push rod having threads, the first push rod passing through the fixing block and being threadedly connected to the fixing block.

[0012] According to some embodiments of this application, the first push rod assembly further includes a limiting member sleeved on the first push rod, the limiting member being located on the side of the fixing block facing the second push rod assembly, and the limiting member being able to abut against the surface of the fixing block facing the second push rod assembly.

[0013] According to some embodiments of this application, along the second direction, the first push rod assembly and the plug block are located at opposite ends of the module body.

[0014] A second aspect of the embodiments of this application also provides a splicing base, comprising: In any of the above splicing modules, the first push rod of at least one splicing module abuts against the second push rod of an adjacent splicing module, and the second push rod of at least one splicing module is inserted into the insertion hole of an adjacent splicing module.

[0015] A third aspect of the embodiments of this application also provides a battery module, comprising: The splicing base of any of the above-mentioned components has a bearing surface; An electrochemical device is connected to the bearing surface of the splicing module.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the battery module structure in one embodiment of this application; Figure 2 This is an assembly diagram of multiple splicing modules in one embodiment of this application; Figure 3 for Figure 2 A magnified view of a portion at position A in the middle; Figure 4 for Figure 2 A magnified view of a section at point B in the middle; Figure 5 This is a schematic diagram of the splicing module in one embodiment of this application; Figure 6 for Figure 5 A magnified view of a portion at position C in the middle.

[0018] Figure label: 100, Module body; 100a, First side; 100b, Second side; 100c, Bearing surface; 100d, First surface; 100e, Second surface; 100f, Opening; 110, First clearance groove; 120, Slide groove; 130, Second clearance groove; 200, First push rod assembly; 210, First push rod; 220, Fixing block; 230, Limiting member; 300, Second push rod assembly; 310, Second push rod; 320, First support member; 330, Elastic member; 340, Second support member; 400, Insertion block; 400a, Insertion hole; 500, Electrochemical device. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Currently, judging from market trends, the application of electrochemical devices is becoming increasingly widespread. Electrochemical devices are not only used in energy storage power systems such as hydropower, thermal power, wind power, and solar power plants, but also widely applied in electric vehicles such as electric bicycles, electric motorcycles, and electric cars, as well as in aerospace and other fields. With the continuous expansion of the application areas of electrochemical devices, the market demand is also constantly increasing.

[0025] In related technologies, battery bases are connected via slots and sliders. During connection, the two bases to be joined must be aligned along the length of the slot, with the slot and slider aligned. After alignment, one base is then pushed to insert it. For stable connection, the slider must be aligned with the slot, and the slider's extension direction must be parallel to the slot's extension direction. This process is time-consuming and requires considerable space.

[0026] In this embodiment, the first push rod 210 can push the second push rod 310 to move along a second direction, and splicing is achieved when the second push rod 310 is inserted into the insertion hole 400a of the insertion block 400. With a fixed distance between the first push rod 210 and the insertion block 400, the second push rod assembly 300 can shorten the distance the first push rod 210 needs to move, thereby achieving splicing. The splicing process requires less time and has higher efficiency.

[0027] This application provides an electronic device, which includes a device body and an electrochemical device 500, the electrochemical device 500 being used to supply power to the device body.

[0028] Electronic devices can be, for example, mobile phones, portable devices, laptops, electric vehicles, electric toys, power tools, vehicles, ships, and spacecraft.

[0029] The technical solutions described in this application are not limited to the devices described above, but can also be applied to all devices that use the electrochemical device 500.

[0030] The electrochemical device 500 mentioned in the embodiments of this application may include one or more electrochemical device 500 components for providing voltage and capacity. The electrochemical device 500 components may include multiple electrochemical devices 500, which are connected in series, parallel, or mixed configurations via busbars.

[0031] In some embodiments, the electrochemical device 500 assembly is typically formed by arranging a plurality of electrochemical devices 500.

[0032] As an example, the electrochemical device 500 assembly can be a battery module, which is formed by arranging and fixing multiple electrochemical devices 500 together to form a single module. As an example, the battery module can also be formed by bundling multiple electrochemical devices 500 together with cable ties.

[0033] In one embodiment, the battery module includes a splicing base and an electrochemical device 500, the electrochemical device 500 being connected to the bearing surface 100c of the splicing base. The electrochemical device 500 can be a single battery cell.

[0034] In some embodiments, the electrochemical device 500 may be a battery pack, which includes a housing and one or more electrochemical device 500 components housed within the housing.

[0035] This application embodiment also provides a battery pack, which includes a housing and at least one electrochemical device 500, the electrochemical device 500 being located within the housing.

[0036] In some embodiments of this application, the electrochemical device 500 can be a secondary battery. A secondary battery refers to an electrochemical device 500 that can be used again after being discharged by recharging to activate the active material.

[0037] The electrochemical device 500 can be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., and the embodiments of this application are not limited to this.

[0038] This application provides a splicing module; please refer to [link / reference]. Figures 1 to 4 This assembly is used in the assembly of an electrochemical device 500. The splicing module includes a module body 100, a first push rod assembly 200, a second push rod assembly 300, and a connector block 400. The module body 100 has a first side 100a and a second side 100b opposite each other along a first direction. The splicing base has a bearing surface 100c for supporting the electrochemical device 500. The first direction is as follows: Figure 1The direction indicated by the middle arrow R1. For example, the bearing surface 100c of the module base is located on the top surface of the module body 100 along the thickness direction of the module body 100, and the first direction is orthogonal to the thickness direction of the module body 100. The first push rod assembly 200 is connected to the first side 100a. The first push rod assembly 200 includes a first push rod 210 extending along a second direction. The first push rod 210 is movable relative to the module body 100 along the second direction. The second direction is orthogonal to both the first direction and the thickness direction of the splicing module. The second direction is as follows: Figure 1 The direction indicated by the middle arrow R2 is the thickness direction of the splicing module. Figure 1 The direction indicated by the middle arrow R3. The second push rod assembly 300 is connected to the second side 100b, and the second push rod 310 includes a second push rod 310 extending along a second direction. Exemplarily, projected along a first direction, the projection areas of the first push rod 210 and the second push rod 310 are arranged along the second direction. The plug block 400 is fixedly connected to the first side 100a, and the plug block 400 has a plug hole 400a facing the second push rod 310 along the second direction, with the opening of the plug hole 400a facing the second push rod 310. Along the second direction, the plug block 400 is located on the side of the second push rod 310 opposite to the first push rod 210, and the second push rod 310 of the adjacent splicing module can move relative to the module body 100 along the second direction under the drive of the first push rod 210 to plug into the plug hole 400a. Projected along the first direction, the projection area of ​​the plug block 400 is located on the side of the projection area of ​​the second push rod 310 opposite to the projection area of ​​the first push rod 210. For example, the first side 100a is one end face of the module body 100 along the first direction.

[0039] In the embodiment of this application, the first push rod assembly 200 includes a first push rod 210 extending along a second direction, and the second push rod assembly 300 includes a second push rod 310 extending along a second direction. Both the first push rod 210 and the second push rod 310 are movable relative to the module body 100 along the second direction. During the splicing of the splicing modules, the first push rod 210 of one splicing module can move along the second direction to abut against the second push rod 310 of the adjacent splicing module, and push the second push rod 310 along the second direction until the second push rod 310 is inserted into the insertion hole 400a of the insertion block 400, thereby achieving splicing. When the distance between the first push rod 210 and the insertion block 400 is constant, the second push rod assembly 300 can shorten the distance that the first push rod 210 needs to move to achieve splicing, resulting in a shorter splicing time and higher splicing efficiency.

[0040] In one embodiment, please refer to Figure 2 and Figure 3The second push rod assembly 300 further includes a first support member 320 and an elastic member 330. The first support member 320 is fixedly connected to the second side 100b. Exemplarily, the second push rod 310 passes through the first support member 320. The elastic member 330 is sleeved on the second push rod 310 and extends along a second direction. One end of the elastic member 330 abuts against the second push rod 310, and the other end of the elastic member 330 abuts against the first support member 320. Exemplarily, the elastic member 330 abuts against the surface of the first support member 320 facing the first push rod 210. During the movement of the first push rod 210 toward the second push rod 310, the first push rod 210 can push the second push rod 310 to move along the second direction, thereby enabling the second push rod 310 to compress the elastic member 330 along the second direction. The first push rod 210 can resist the elastic force of the elastic member 330 to continue pushing the second push rod 310 to move along the second direction. When it is necessary to separate the two splicing modules, the elastic element 330 can apply a restoring force toward the first push rod 210 to the second push rod 310, thereby ensuring that the second push rod 310 is stably disengaged from the insertion hole 400a to a certain extent, so that the two splicing modules can be stably separated. For example, the elastic element 330 is a linear spring.

[0041] It should be noted that, Figure 2 The second side 100b of one of the splicing modules is shown near the right side. The second push rod assembly 300 in the figure can be regarded as the result of the partial cross-section shown. The first push rod assembly 200 and the plug block 400 located on the second side 100b are the first push rod assembly 200 and the plug block 400 of another splicing module. The main body 100 of the other splicing module is hidden in the figure.

[0042] In one embodiment, please refer to Figure 3 and Figure 4The second side 100b has a first clearance groove 110, a sliding groove 120, and a second clearance groove 130 extending along a second direction. The second push rod assembly 300 is located within the sliding groove 120. The first push rod 210 can partially extend into the sliding groove 120 to push the second push rod 310. The first clearance groove 110 and the second clearance groove 130 are used to avoid the first push rod assembly 200 and the plug block 400. Along the second direction, the sliding groove 120 is located between the first clearance groove 110 and the second clearance groove 130. The sliding groove 120, the first clearance groove 110, and the second clearance groove 130 are interconnected. Along the direction from the first side 100a to the second side 100b, the first clearance groove 110 and the second clearance groove 130 have inlets. The first push rod assembly 200 and the second push rod assembly 300 can enter the interior of the first clearance groove 110 and the second clearance groove 130 respectively through the inlets. When two adjacent splicing modules are joined, the first clearance groove 110 and the second clearance groove 130 can avoid the first push rod assembly 200 and the second push rod assembly 300, thereby reducing the distance between the two adjacent splicing modules along the second direction and improving the energy density of the corresponding battery module. Furthermore, during the splicing process, the first push rod 210 can move from the first clearance groove 110 into the interior of the slide groove 120, and the second push rod 310 can move into the interior of the insertion hole 400a. The connection strength between the two adjacent splicing modules is relatively high, resulting in a more stable battery module.

[0043] In one embodiment, please refer to Figure 4 The second push rod assembly 300 also includes a second support member 340, which is sleeved on the second push rod 310 and abuts against the interior of the slide groove 120. Exemplarily, the second support member 340 is made of rubber or silicone. Along the second direction, the second support member 340 is located at the end of the second push rod 310 opposite to the first clearance groove 110. When the second push rod 310 is inserted into the insertion hole 400a, the second support member 340 abuts against the insertion block 400. The second support member 340 can support the second push rod 310, thereby enabling the positioning of the second push rod 310. The second push rod 310 can be more accurately aligned with the insertion hole 400a of the insertion block 400, thus making the insertion process of the second push rod 310 more stable. Furthermore, as the second push rod 310 moves toward the insertion block 400, the second support member 340 can abut against the insertion block 400, so that the operator can feel the resistance and thus determine that the second push rod 310 has been inserted into the insertion hole 400a.

[0044] In one embodiment, please refer to Figure 5Along the second direction, the module body 100 has opposing first surfaces 100d and second surfaces 100e. Exemplarily, the first surface 100d and the second surface 100e are the two end faces of the module body 100, and are parallel to each other. Along the second direction, a first clearance groove 110, a swivel groove, and a second clearance groove 130 are all located between the first surface 100d and the second surface 100e. The first clearance groove 110 is located on the side of the slide groove 120 facing the first surface 100d, and extends along the second direction to the first surface 100d to form an opening 100f. An operator can drive the first push rod 210 to move along the second direction toward the plug-in block 400 through the opening 100f formed on the first surface 100d, thus simplifying the operator's operation.

[0045] It is understood that other embodiments of this application are not limited to the first clearance groove 110 extending along the second direction to the first surface 100d to form an opening 100f. Exemplarily, the first clearance groove 110 extends along the vertical direction to the bearing surface 100c or the surface opposite to the bearing surface 100c to form an inlet, and the first push rod 210 can be exposed to the outside through the corresponding inlet, and the operator can drive the first push rod 210 to move along the second direction toward the plug block 400 through the corresponding inlet.

[0046] In one embodiment, please refer to Figure 5 and Figure 6 The first push rod assembly 200 further includes a fixing block 220, which is fixedly connected to the first side 100a. The first push rod 210 has threads, passes through the fixing block 220, and is threadedly connected to it. For example, the first push rod 210 is a threaded rod, capable of threaded engagement with the fixing block 220. An operator can rotate the first push rod 210 to move it relative to the fixing block 220 in a second direction. The operator can also rotate the first push rod 210 to drive it to move in the second direction. The threaded engagement of the fixing member with the first push rod 210 prevents it from retracting in the second direction, and the operator's driving method is relatively simple.

[0047] In one embodiment, please refer to Figure 6The first push rod assembly 200 also includes a limiting member 230 sleeved on the first push rod 210. The limiting member 230 is located on the side of the fixing block 220 facing the second push rod assembly 300, and can abut against the surface of the fixing block 220 facing the second push rod assembly 300. As the operator drives the first push rod 210 to move away from the second push rod 310, the limiting member 230 gradually approaches the fixing block 220 until the limiting member 230 abuts against the fixing block 220. When the limiting member 230 abuts against the fixing block 220, the operator can feel the resistance, thus enabling a timely reminder to the operator that the first push rod 210 has separated from the second push rod 310 and that the second push rod 310 has disengaged from the insertion hole 400a. Furthermore, the limiting component 230 can reduce the possibility of the first push rod 210 and the fixing block 220 becoming detached from each other, thereby reducing the possibility of the first push rod 210 being lost. When it is necessary to splice the splicing modules, the operator can more easily twist the first push rod 210 to achieve the splicing process.

[0048] In one embodiment, please refer to Figure 5 Along the second direction, the first push rod assembly 200 and the plug-in block 400 are located at opposite ends of the module body 100. For example, along the second direction, the distance between the first push rod assembly 200 and the first surface 100d is less than the distance between the first push rod assembly 200 and the midpoint of the module body 100, and the distance between the plug-in block 400 and the second surface 100e is less than the distance between the plug-in block 400 and the midpoint of the module body 100. The first push rod assembly 200 and the plug-in block 400 are distributed at opposite ends of the module body 100, resulting in a more uniform distribution of connection strength between adjacent splicing modules, and consequently, a more stable connection between the splicing modules.

[0049] The above embodiments are merely illustrative of the technical solutions of this application and are not intended to limit it. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application, and all should be covered within the scope of the specification of this application. In particular, as long as there is no structural conflict, the various technical features mentioned in the embodiments can be combined in any way. This application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of protection.

Claims

1. A splicing module, characterized in that, The splicing module, used in the assembly of electrochemical devices, includes: The module body has a first side and a second side that are opposite to each other along a first direction; A first push rod assembly is connected to the first side. The first push rod assembly includes a first push rod extending along a second direction. The first push rod is movable relative to the module body along the second direction. The second direction is arranged orthogonally to the first direction. A second push rod assembly is connected to the second side, the second push rod assembly including a second push rod extending along the second direction; A plug-in block is connected to the first side. The plug-in block has a plug-in hole. Along the second direction, the plug-in block is located on the side of the second push rod opposite to the first push rod. The second push rod of the adjacent splicing module can move relative to the module body along the second direction under the drive of the first push rod to plug into the plug-in hole.

2. The splicing module according to claim 1, characterized in that, The second push rod assembly further includes a first support member and an elastic member. The first support member is connected to the second side, and the elastic member is sleeved on the second push rod. The elastic member extends along the second direction, with one end of the elastic member abutting against the second push rod and the other end of the elastic member abutting against the first support member.

3. The splicing module according to claim 1, characterized in that, The second side has a first clearance groove, a slide groove and a second clearance groove extending along the second direction. The second push rod assembly is located in the slide groove. The first push rod can partially extend into the slide groove to push the second push rod. The first clearance groove and the second clearance groove are used to avoid the first push rod assembly and the plug block. Along the second direction, the slide groove is located between the first clearance groove and the second clearance groove.

4. The splicing module according to claim 3, characterized in that, The second push rod assembly also includes a second support member, which is sleeved on the second push rod and abuts against the inside of the slide groove. Along the second direction, the second support member is located at the end of the second push rod away from the first clearance groove. When the second push rod is inserted into the insertion hole, the second support member abuts against the insertion block.

5. The splicing module according to claim 3, characterized in that, Along the second direction, the module body has a first surface and a second surface opposite each other, the first clearance groove is located on the side of the slide groove facing the first surface, and the first clearance groove extends along the second direction to the first surface to form an opening.

6. The splicing module according to claim 1, characterized in that, The first push rod assembly further includes a fixing block connected to the first side, the first push rod having threads, the first push rod passing through the fixing block and being threadedly connected to the fixing block.

7. The splicing module according to claim 6, characterized in that, The first push rod assembly further includes a limiting member sleeved on the first push rod, the limiting member being located on the side of the fixing block facing the second push rod assembly, and the limiting member being able to abut against the surface of the fixing block facing the second push rod assembly.

8. The splicing module according to claim 1, characterized in that, Along the second direction, the first push rod assembly and the plug block are located at opposite ends of the module body.

9. A splicing base, characterized in that, include: The splicing modules as described in any one of claims 1 to 8, wherein the first push rod of at least one splicing module abuts against the second push rod of an adjacent splicing module, and the second push rod of at least one splicing module is inserted into the insertion hole of an adjacent splicing module.

10. A battery module, characterized in that, include: The splicing base as described in claim 9, wherein the splicing base has a bearing surface; An electrochemical device is connected to the bearing surface of the splicing module.

Images