Fixing seat, end plate assembly and battery module

Abstract

The utility model provides a fixing seat, an end plate assembly and a battery module, and relates to the technical field of batteries. The fixed seat comprises a body and two flanges; one end of the body is provided with an output pole mounting groove, and the output pole mounting groove extends along a first direction and penetrates through one side of the body to form a first groove port; the two flanges are connected with the body, are located on the two sides of the output electrode installation groove in the second direction respectively and are arranged adjacent to the first groove port. According to the invention, through the arrangement of the flanges, the creepage path between the output electrode in the output electrode mounting groove and the end plate needs to bypass the flanges, so that the creepage distance between the output electrode and the end plate can be increased through the flanges, and short circuit between the output electrode and the end plate is avoided. Therefore, the reliability of the battery module can be improved.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of batteries, in particular to a fixing seat, an end plate assembly and a battery module. BACKGROUND

[0002] In the related art, a battery module comprises two end plates, a plurality of battery cells arranged in sequence between the two end plates, and a strap for binding the two end plates and the plurality of battery cells into one. The plurality of battery cells are connected in series or in parallel and transmit current through an output pole. The output pole is a metal row, for example, an aluminum row. In order to avoid the output pole from shaking, the output pole needs to be fixed on the end plate. Specifically, a fixing seat is arranged on the end plate. One end of the fixing seat is used for fixing the output pole, and the other end is connected with the end plate.

[0003] At present, the reliability of the battery module is poor. CONTENT OF THE UTILITY MODEL

[0004] The application provides a fixing seat, an end plate assembly and a battery module, which can improve the reliability of the battery module.

[0005] In a first aspect, the application provides a fixing seat, which comprises a body and two retaining edges. One end of the body is provided with an output pole mounting groove, the output pole mounting groove extends along a first direction and penetrates through the body to form a first groove port. The two retaining edges are connected with the body and are located on both sides of the output pole mounting groove along a second direction and are arranged adjacent to the first groove port.

[0006] Optionally, the depth size of the output pole mounting groove is L, the retaining edge has a width size W along the width direction of the output pole mounting groove, and W satisfies: W≥0.5L.

[0007] Optionally, the width size W satisfies: 0.5L≤W≤1.2L.

[0008] Optionally, the plane where the first groove port is located is coplanar with one side wall of the retaining edge.

[0009] Optionally, along the depth direction of the output pole mounting groove, the height size of the body is consistent with the height size of the retaining edge, and the two end faces of the body are flush with the two end faces of the retaining edge.

[0010] Optionally, the depth size of the output pole mounting groove is L, and 5mm≤L≤12mm is satisfied.

[0011] Optionally, the fixing seat further comprises a nut, the nut is located in the output pole mounting groove, the axis of the nut is perpendicular to the groove bottom of the output pole mounting groove, one end of the nut is inserted into the body and connected with the body.

[0012] Optionally, one end of the nut is provided with a turn-up, and the turn-up is located in the output pole mounting groove.

[0013] Optionally, the partial flange is embedded in the body, and / or the distance between the side of the flange away from the groove bottom of the output pole mounting groove and the groove bottom of the output pole mounting groove is δ, satisfying 0.3mm≤δ≤0.8mm.

[0014] Optionally, the surface of the body defining the first slot port is a first surface, the first surface is provided with a weight-reducing groove, the weight-reducing groove is provided with a sleeve, the sleeve is connected with the body, one end of the nut is inserted into the sleeve and connected with the sleeve.

[0015] Optionally, a plurality of reinforcing ribs are arranged in the weight-reducing groove, and the plurality of reinforcing ribs are arranged at intervals along the circumference of the sleeve.

[0016] Optionally, the outer circumferential surface of the nut is provided with a plurality of embedding grooves, the part of the body close to the nut is protruded outwardly to form a plurality of embedding parts, the plurality of embedding parts correspond to the plurality of embedding grooves one by one, the embedding part is embedded into the corresponding embedding groove and connected with the inner wall of the embedding groove; and / or the nut has two, and the two nuts are arranged at intervals along the width direction of the output pole mounting groove.

[0017] Optionally, along the first direction, the output pole mounting groove further penetrates the other side of the body to form a second slot port, a support step is arranged in the output pole mounting groove, two ends of the support step are connected with the two side groove walls of the output pole mounting groove respectively, and the support step is arranged adjacent to the second slot port.

[0018] In the second aspect, the application provides an end plate assembly, which comprises an end plate and the fixing seat described above; one end of the end plate is provided with a matching groove; one end of the fixing seat away from the output pole mounting groove is inserted into the matching groove and connected with the end plate; wherein the blocking edge is located at one side of the end plate.

[0019] In the third aspect, the application provides a battery module, which comprises a binding belt, a connecting row, a first output pole, a second output pole, a square shell battery cell, a bolt and the end plate assembly described above; the end plate assembly has two, and the two end plate assemblies are arranged at intervals along the first direction; the square shell battery cell has a plurality of, and the plurality of square shell battery cells are arranged at intervals along the first direction and stacked between the two end plate assemblies; the binding belt binds the end plate assembly and the plurality of square shell battery cells into one; the connecting row connects the plurality of square shell battery cells in series or in parallel; one end of the first output pole is connected with the electrode of the battery cell adjacent to the end plate assembly, and the other end is inserted into the output pole mounting groove; one end of the second output pole is inserted into the output pole mounting groove and electrically connected with the first output pole; the rod end of the bolt penetrates through the first output pole and the second output pole and is connected with the body.

[0020] The application has the following beneficial effects:

[0021] In the application, by setting the stop edge, the creeping path between the output pole located in the output pole mounting groove and the end plate needs to bypass the stop edge, so that the creeping distance between the output pole and the end plate can be increased by the stop edge to avoid short circuit between the output pole and the end plate. In this way, the reliability of the battery module can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0023] Figure 1 is a perspective view of the fixing seat provided by the embodiments of the present application;

[0024] Figure 2 is a structural view of the fixing seat cooperating with the end plate and the output pole provided by the embodiments of the present application;

[0025] Figure 3 is a partial top view of the fixing seat cooperating with the end plate provided by the embodiments of the present application;

[0026] Figure 4 is a front view of the fixing seat provided by the embodiments of the present application;

[0027] Figure 5 is Figure 1 the sectional view of A-A in FIG. 1;

[0028] Figure 6 is a structural view of the nut provided by the embodiments of the present application;

[0029] Figure 7 is a structural view of the end plate assembly provided by the embodiments of the present application;

[0030] Figure 8 is a structural view of the battery module provided by the embodiments of the present application;

[0031] Figure 9 is a structural view of the first output pole and the second output pole provided by the embodiments of the present application.

[0032] Explanation of reference signs:

[0033] 1-fixing seat; 11-body; 111-output pole mounting groove; 112-first slot port; 113-first surface; 114-weight reduction groove; 115-sleeve; 116-stiffener; 117-second slot port; 118-supporting table;

[0034] 12 - baffle; 13 - nut; 131 - flange; 132 - fitting groove;

[0035] 2 - end plate assembly; 21 - end plate; 211 - fitting groove;

[0036] 3 - battery module; 31 - cable tie; 32 - connecting row; 33 - first output pole; 34 - second output pole; 341 - insulation layer; 35 - square cell; 36 - bolt;

[0037] 4 - creeping path. DETAILED DESCRIPTION

[0038] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present application.

[0039] In the description of the present application, it should be noted that unless specifically defined and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements or the interaction relationship between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0040] And the term "including", "containing" or any other variant thereof is intended to cover non-exclusive containing, so that the product including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such product.

[0041] In the description of the embodiments of the present application, the words "example" or "for example" are used to represent example, illustration or description. Any embodiment or design scheme described as "example" or "for example" in the embodiments of the present application is not interpreted as more preferred or having more advantages than another embodiment or design scheme. The use of "example" or "for example" and the like is intended to present the relative concept in a clear manner.

[0042] Before introducing the fixed seat, end plate assembly and battery module provided by the embodiments of the present application, the related technologies of the present application are introduced.

[0043] In the related art, a battery module includes two end plates, a plurality of battery cells arranged in sequence between the two end plates, and a strap for binding the two end plates and the plurality of battery cells into one. The plurality of battery cells are connected in series or in parallel and transmit current through an output pole. The output pole is a metal row, for example, an aluminum row. In order to avoid the output pole from shaking, the output pole is fixed on the end plate through a fixing seat. In order to improve the strength of the end plate to protect the battery cells between the two end plates and improve the heat dissipation efficiency, the end plate is made of a metal material, for example, an aluminum alloy.

[0044] In order to reduce the height position of the bolt for fixing the output pole on the fixing seat to reduce the height size of the battery module, a counterbore needs to be arranged on the fixing seat to make the installation position of the bolt and the output pole closer to the end plate. The end of the output pole fixed on the fixing seat needs to be arranged exposed to be in conductive contact with the output row of the battery module. In this way, the creepage distance between the end of the output pole close to the fixing seat and the end plate is small, which easily causes short circuit between the output pole and the end plate, thereby causing the battery module 3 to fail, and even possibly causing the entire battery pack to fail.

[0045] Based on this, the embodiments of the present application provide a fixing seat, an end plate assembly and a battery module to increase the creepage distance between the end of the output pole close to the fixing seat and the end plate, thereby avoiding short circuit between the output pole and the end plate, so as to improve the reliability of the battery module.

[0046] The following will be described in detail Figures 1 to 9 The fixing seat, the end plate assembly and the battery module provided by the embodiments of the present application will be described in detail.

[0047] Please refer to Figure 1 , Figure 1 is a perspective view of the fixing seat 1 provided by the embodiments of the present application. The embodiments of the present application provide a fixing seat 1. The fixing seat 1 includes a body 11 and two retaining edges 12. One end of the body 11 is provided with an output pole mounting groove 111. The output pole mounting groove 111 extends along a first direction and penetrates one side of the body 11 to form a first groove port 112. The two retaining edges 12 are connected with the body 11. Along a second direction, the two retaining edges 12 are respectively located on both sides of the output pole mounting groove 111 and are arranged adjacent to the first groove port 112.

[0048] It can be understood that the second direction is parallel to the width direction of the output pole mounting groove 111.

[0049] It can be understood that the retaining edge 12 is located on the side of the end plate away from the battery cell.

[0050] It can be understood that the end of the fixing seat 1 away from the output pole mounting groove 111 is embedded in the end plate 21 and connected with the end plate 21, as Figure 2 indicated, Figure 2is a structural schematic view of the fixed seat 1 and the end plate 21 and the output pole provided by the embodiment of the present application. The output pole of the battery module 3 includes a first output pole 33 and a second output pole 34. One end of the first output pole 33 is connected with the electrode of the battery cell, and the other end is installed in the output pole installation groove 111. One end of the second output pole 34 of the battery module 3 is located in the output pole installation groove 111 and is in contact with the first output pole 33, and the other end is connected with the second output pole 34 of the other battery module 3 after passing out from the first slot port 112. The bolt 36 passes through the first output pole 33 and the second output pole 34 and is threadedly connected with the body 11, and the first output pole 33 and the second output pole 34 are pressed on the groove bottom of the output pole installation groove 111 by the head of the bolt 36. By arranging the output pole installation groove 111, the output pole of the battery module 3 and the fixed seat 1 can share a part of the height space, so that the height dimension of the battery module 3 and the external dimension of the battery pack can be reduced.

[0051] Specifically, the creepage path 4 between the end plate 21 and the output pole located in the output pole installation groove 111 is as shown in Figure 3 Figure 3 is a partial top view of the fixed seat 1 and the end plate 21 provided by the embodiment of the present application. Figure 3 The dashed line shown in the figure is the creepage path 4. It can be known that, by arranging the stop edge 12, the creepage path 4 between the output pole located in the output pole installation groove 111 and the end plate 21 needs to bypass the stop edge 12, so that the creepage distance between the output pole and the end plate 21 can be increased by the stop edge 12 to avoid short circuit between the output pole and the end plate 21. In this way, the reliability of the battery module 3 can be improved.

[0052] In addition, the arrangement of the stop edge 12 can also enhance the structural strength of the fixed seat 1, which is beneficial to improve the structural strength of the battery module 3.

[0053] Please refer to Figure 3 and Figure 4 , Figure 4 is a front view of the fixed seat 1 provided by the embodiment of the present application. In an embodiment, the depth dimension of the output pole installation groove 111 is L. In the width direction of the output pole installation groove 111, the stop edge 12 has a width dimension W, which satisfies: W≥0.5L.

[0054] Exemplarily, the relationship between the width dimension W of the stop edge 12 and the depth dimension L of the output pole installation groove 111 includes but is not limited to: 0.5L, 0.6L, 0.7L, 0.8L, 0.9L, 1.0L, 1.1L, 1.2L, 1.3L, 1.4L, 1.5L, 1.6L, 1.7L, 1.8L, 1.9L, 2L.

[0055] ​It can be understood that the setting of the output pole mounting groove 111 makes the height of the output pole decrease, so that the part of the output pole located in the output pole mounting groove 111 is closer to the end plate 21. Therefore, the depth dimension L of the output pole mounting groove 111 is the reduced creepage distance between the output pole and the end plate 21.

[0056] Based on this, in the embodiment, through the above setting, the creepage distance between the end plate 21 and the output pole will not be reduced due to the setting of the output pole mounting groove 111, so as to facilitate meeting the requirement of the minimum creepage distance between the output pole and the end plate 21.

[0057] In an embodiment, the width dimension W satisfies: 0.5L≤W≤1.2L.

[0058] Exemplarily, the width dimension W includes but is not limited to: 0.5L, 0.55L, 0.6L, 0.65L, 0.7L, 0.75L, 0.8L, 0.85L, 0.9L, 0.95L, 1.0L, 1.05L, 1.1L, 1.15L, 1.2L.

[0059] In the embodiment, through the above limitation, it can be avoided that the width dimension W of the retaining edge 12 is too large to cause the material cost of the fixing seat 1 to be relatively high, so that on the basis of meeting the requirement of the creepage distance between the output pole and the end plate 21, the material cost of the fixing seat 1 can be controlled.

[0060] Please refer to Figure 1 In an embodiment, the plane where the first groove port 112 is located is coplanar with one side wall of the retaining edge 12. In this way, the surface structure of the fixing seat 1 can be regular, so as to reduce the number of corners on the fixing seat 1, thereby facilitating reducing the stress concentration positions on the fixing seat 1, and further improving the stress state of the fixing seat 1.

[0061] Please refer to Figure 1 In an embodiment, along the depth direction of the output pole mounting groove 111, the height dimension of the body 11 is consistent with the height dimension of the retaining edge 12, and the two end faces of the body 11 are flush with the two end faces of the retaining edge 12. In this way, the surface structure of the fixing seat 1 can be regular, so as to reduce the number of corners on the fixing seat 1, thereby facilitating reducing the stress concentration positions on the fixing seat 1, and further improving the stress state of the fixing seat 1.

[0062] Please refer to Figure 4 In an embodiment, the depth dimension of the output pole mounting groove 111 is L, which satisfies: 5mm≤L≤12mm.

[0063] Exemplarily, the depth dimension L of the output pole mounting groove 111 includes but is not limited to 5mm, 5.12mm, 5.38mm, 6mm, 6.45mm, 7mm, 7.33mm, 7.55mm, 8mm / 8.22mm, 8.47mm, 9mm, 9.55mm, 10mm, 10.49mm, 11.12mm, 11.77mm, 12mm.

[0064] In the embodiment, through the above setting, on the one hand, the output pole mounting groove 111 has a suitable depth dimension L to accommodate the output pole, thereby facilitating the control of the height dimension of the battery module 3 and the battery pack; on the other hand, the depth dimension L is prevented from being too large to affect the strength of the fixing seat 1 and the length of the threaded hole of the fixing seat 1 matched with the bolt 36.

[0065] Please refer to Figure 1 and Figure 5 , Figure 5 is Figure 1 the sectional view of A-A in FIG. 1. In an embodiment, the fixing seat 1 further includes a nut 13. The nut 13 is located in the output pole mounting groove 111. The axis of the nut 13 is perpendicular to the groove bottom of the output pole mounting groove 111, one end of the nut 13 is inserted into the body 11 and connected with the body 11. By setting the nut 13, the strength of the nut 13 can be increased alone, so as to control the material cost of the fixing seat 1 on the basis of improving the reliability of the threaded connection between the fixing seat 1 and the bolt 36.

[0066] Exemplarily, the nut 13 is a metal material, for example, a copper nut 13.

[0067] Please refer to Figure 1 and Figure 5 In an embodiment, one end of the nut 13 is provided with a flange 131. The flange 131 is located in the output pole mounting groove 111. In this way, the area of the contact surface between the nut 13 and the output pole can be increased, so as to facilitate the improvement of the stress uniformity of the contact surface between the nut 13 and the output pole and the improvement of the stress state thereof.

[0068] Please refer to Figure 5 In an embodiment, the distance between the side of the flange 131 away from the groove bottom of the output pole mounting groove 111 and the groove bottom of the output pole mounting groove 111 is δ, which satisfies: 0.3mm≤δ≤0.8mm.

[0069] Exemplarily, the interval δ includes but is not limited to 0.3mm, 0.33mm, 0.35mm, 0.37mm, 0.4mm, 0.42mm, 0.44mm, 0.46mm, 0.48mm, 0.5mm, 0.52mm, 0.54mm, 0.56mm, 0.58mm, 0.60mm, 0.65mm, 0.66mm, 0.68mm, 0.7mm, 0.72mm, 0.74mm, 0.76mm, 0.78mm, 0.8mm.

[0070] In the embodiment, through the above arrangement, on the one hand, the side of the flange 131 away from the bottom of the output pole mounting groove 111 and the bottom of the output pole mounting groove 111 have sufficient interval, so as to avoid the output pole being directly pressed by the body 11 when the locking bolt 36 is locked, thereby improving the stress state of the body 11; on the other hand, the interval is not too large, so as to avoid the depth of the output pole mounting groove 111 being too large, thereby affecting the strength of the body 11.

[0071] Please refer to Figure 5 In an embodiment, part of the flange 131 is embedded in the body 11. In this way, the area of the fitting surface between the nut 13 and the body 11 can be increased, so as to improve the reliability of the connection between the nut 13 and the body 11.

[0072] It can be understood that the body 11 is an injection molded part, which is formed on the surface of the nut 13 through an injection molding process.

[0073] Please refer to Figure 1 In an embodiment, the surface of the body 11 defining the first groove port 112 is a first surface 113. The first surface 113 is provided with a weight-reducing groove 114. The weight-reducing groove 114 is provided with a sleeve 115. The sleeve 115 is connected with the body 11. One end of the nut 13 is inserted into the sleeve 115 and connected with the sleeve 115. In this way, the amount of material of the body 11 can be reduced, so as to reduce the weight of the fixing seat 1, and the body 11 and the nut 13 have sufficient connection area, so as to improve the reliability of the connection between the nut 13 and the body 11.

[0074] Please refer to Figure 1 In an embodiment, a plurality of reinforcing ribs 116 are arranged in the weight-reducing groove 114. The plurality of reinforcing ribs 116 are arranged at intervals along the circumference of the sleeve 115. In this way, the structural strength of the fixing seat 1 can be enhanced, so as to improve the reliability of the output pole fixed to the fixing seat 1.

[0075] Please refer to Figure 6 , Figure 6is a structural schematic view of the nut 13 provided by an embodiment of the present application. In an embodiment, the outer circumferential surface of the nut 13 is provided with a plurality of fitting grooves 132. The portion of the body 11 close to the nut 13 is convexly provided with a plurality of fitting portions, the plurality of fitting portions respectively correspond to the plurality of fitting grooves 132, the fitting portions are fitted into the corresponding fitting grooves 132, and the fitting portions are connected with the inner walls of the fitting grooves 132. In this way, the connecting surface area between the nut 13 and the body 11 can be increased, so that the reliability of the connection between the nut 13 and the body 11 can be improved.

[0076] Please refer to Figure 1 , the nut 13 is two. The two nuts 13 are arranged in the width direction of the output pole mounting groove 111. In this way, the output pole can be fixed on the fixing seat 1 by the two bolts 36, so that the positional stability of the output pole on the fixing seat 1 can be improved.

[0077] Please refer to Figure 1 , in an embodiment, along the first direction, the output pole mounting groove 111 also penetrates the other side of the body 11 to form a second groove port 117. A support table 118 is arranged in the output pole mounting groove 111. The two ends of the support table 118 are respectively connected with the two side groove walls of the output pole mounting groove 111. The support table 118 is arranged adjacent to the second groove port 117.

[0078] It can be understood that the first output pole 33 is arranged in a bent manner close to one end of the output pole mounting groove 111 to form a stepped groove. The stepped groove cooperates with the support table 118, that is, a part of the first output pole 33 is in contact with the groove bottom of the output pole mounting groove 111, and a part of the first output pole 33 cooperates with the top surface of the support table 118. In this way, the cooperation area between the first output pole 33 and the fixing seat 1 can be increased, so that the stability of the first output pole 33 fixed on the fixing seat 1 can be improved.

[0079] It can be understood that one end of the first output pole 33 is connected with the electrode of the battery cell, and the other end is inserted into the output pole mounting groove 111 from the second groove port 117.

[0080] In this way, the cooperation surface area between the fixing seat 1 and the first output pole 33 can be increased, so that the stability of the end portion of the first output pole 33 relative to the fixing seat 1 can be improved, so as to avoid the first output pole 33 shaking relative to the fixing seat 1 during transportation.

[0081] Please refer to Figure 7 , Figure 7This is a schematic diagram of the end plate assembly 2 provided in an embodiment of this application. Accordingly, an embodiment of this application also provides an end plate assembly 2. The end plate assembly 2 includes an end plate 21 and a fixing seat 1 provided in some embodiments of this application. One end of the end plate 21 is provided with a mating groove 211. The end of the fixing seat 1 away from the output pole mounting groove 111 is inserted into the mating groove 211 and connected to the end plate 21. The retaining edge 12 is located on one side of the end plate 21.

[0082] It is understandable that the flange 12 is located on one side of the end plate 21 along the thickness direction of the end plate 21.

[0083] It is understood that the end plate assembly 2 includes the fixing seat 1 provided in some embodiments of this application, and the end plate assembly 2 has all the beneficial effects of the fixing seat 1, which will not be repeated here.

[0084] Please see Figure 8 , Figure 8 This is a schematic diagram of the structure of a battery module 3 provided in an embodiment of this application. Accordingly, an embodiment of this application also provides a battery module 3. The battery module 3 includes cable ties 31, a connecting bar 32, a first output electrode 33, a second output electrode 34, prismatic cells 35, bolts 36, and an end plate assembly 2 provided in some embodiments of this application. There are two end plate assemblies 2, which are spaced apart along a first direction. There are multiple prismatic cells 35, which are stacked sequentially between the two end plate assemblies 2 along the first direction. Cable ties 31 bind the end plate assembly 2 and the multiple prismatic cells 35 together. The connecting bar 32 connects the multiple prismatic cells 35 in series or in parallel. One end of the first output electrode 33 is connected to the electrode of the cell adjacent to the end plate assembly 2, and the other end is inserted into the output electrode mounting groove 111. One end of the second output electrode 34 is inserted into the output electrode mounting groove 111 and is electrically connected to the first output electrode 33. The end of the bolt 36 passes through the first output terminal 33 and the second output terminal 34 and connects to the body 11, as shown below. Figure 9 As shown, Figure 9 This is a schematic diagram of the connection between the first output pole 33 and the second output pole 34 provided in an embodiment of this application.

[0085] It is understood that the battery module 3 includes the end plate assembly 2 provided in some embodiments of this application, and the battery module 3 has all the beneficial effects of the end plate assembly 2, which will not be repeated here.

[0086] The portion of the second output electrode 34 that is close to the end plate 21 and located outside the output electrode mounting groove 111 is covered with an insulating layer 341.

[0087] The above has carried out the detailed introduction to the embodiment of the application, the principle and implementation mode of the application have been described by applying specific examples in this paper, the above embodiment explanation is only for helping understanding the method of the application and its core idea; at the same time, for the person skilled in the art, according to the idea of the application, there will be changes in specific implementation mode and application range, and the above-mentioned, the content of the specification should not be understood as the limitation of the application.

Claims

1. A fixture comprising: The application relates to a fixing seat for a prong, comprising: a body provided with a prong mounting groove at one end, the prong mounting groove extending along a first direction and penetrating through one side of the body to form a first groove port; and two baffle edges connected with the body and located on two sides of the prong mounting groove along a second direction and adjacent to the first groove port. The depth of the prong mounting groove is L, and the width of the baffle edge is W along the width direction of the prong mounting groove, and W>=0.5L. The width W satisfies 0.5L<=W<=1.2L.

2. The fixture of claim 1, wherein The plane where the first groove port is located is coplanar with a side wall of the baffle edge.

3. The fixture of claim 2, wherein, The height of the body is consistent with the height of the baffle edge along the depth direction of the prong mounting groove, and the two end faces of the body are flush with the two end faces of the baffle edge.

4. The fixture of claim 1, wherein The depth of the prong mounting groove is L, and 5mm<=L<=12mm.

5. The holder according to any one of claims 1-4, characterized in that The fixing seat further comprises a nut located in the prong mounting groove, the axis of the nut being perpendicular to the groove bottom of the prong mounting groove, one end of the nut being inserted into the body and connected with the body.

6. The holder according to any one of claims 1-4, characterized in that One end of the nut is provided with a turn-up edge located in the prong mounting groove.

7. The fixture of any one of claims 1-4, wherein, Part of the turn-up edge is embedded in the body, and / or the distance between the side of the turn-up edge away from the groove bottom of the prong mounting groove and the groove bottom of the prong mounting groove is delta, and 0.3mm<=delta<=0.8mm.

8. The fixture of claim 7, wherein, The surface of the body defining the first groove port is a first surface, a weight-reducing groove is arranged on the first surface, a sleeve is arranged in the weight-reducing groove, the sleeve is connected with the body, and one end of the nut is inserted into the sleeve and connected with the sleeve.

9. The fixture of claim 8, wherein, A plurality of reinforcing ribs are arranged in the weight-reducing groove and are spaced along the circumferential direction of the sleeve.

10. The fixture of claim 7, wherein, The outer circumferential surface of the nut is provided with a plurality of embedding grooves, the part of the body close to the nut is convex into a plurality of embedding parts, the plurality of embedding parts are one-to-one corresponding to the plurality of embedding grooves, the embedding parts are embedded into the corresponding embedding grooves and connected with the inner walls of the embedding grooves.

11. The fixture of claim 10, wherein, The nut has two, and the two nuts are spaced along the width direction of the prong mounting groove.

12. The fixture of claim 7, wherein, The prong mounting groove further penetrates through the other side of the body along the first direction to form a second groove port, a support step is arranged in the prong mounting groove, the two ends of the support step are connected with the two side groove walls of the prong mounting groove, and the support step is arranged adjacent to the second groove port. The application relates to a fixing seat for a prong, comprising: a body provided with a prong mounting groove at one end, the prong mounting groove extending along a first direction and penetrating through one side of the body to form a first groove port; and two baffle edges connected with the body and located on two sides of the prong mounting groove along a second direction and adjacent to the first groove port. The application relates to an end plate assembly, comprising: an end plate provided with a matching groove at one end; and the fixing seat according to any one of claims 1-13, one end of the fixing seat away from the prong mounting groove being inserted into the matching groove and connected with the end plate; wherein the baffle edge is located on one side of the end plate.

13. The fixture of any one of claims 1-4, wherein, The application relates to an end plate assembly, comprising: an end plate provided with a matching groove at one end; and the fixing seat according to any one of claims 1-13, one end of the fixing seat away from the prong mounting groove being inserted into the matching groove and connected with the end plate; wherein the baffle edge is located on one side of the end plate.

14. An end plate assembly characterized by, The application relates to an end plate assembly, comprising: an end plate provided with a matching groove at one end; and the fixing seat according to any one of claims 1-13, one end of the fixing seat away from the prong mounting groove being inserted into the matching groove and connected with the end plate; wherein the baffle edge is located on one side of the end plate. ​ ​ ​ 15. A battery module, comprising: ​ ​ ​ a cable to bind the end plate assembly and the plurality of square cell batteries as a whole; a connection row to connect the plurality of square cell batteries in series or in parallel; a first output pole, one end of which is connected to the electrode of the battery adjacent to the end plate assembly, and the other end of which is inserted into the output pole mounting groove; a second output pole, one end of which is inserted into the output pole mounting groove and electrically connected to the first output pole; and a bolt, the rod end of which passes through the first output pole and the second output pole and is connected to the body.

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