Output pole base, battery module and solid-state battery pack

Abstract

The utility model provides a kind of output pole base, battery module and solid-state battery package, it is related to battery technical field.The base includes base body, connecting column, first protective plate and second protective plate;The bottom end of base body is connected with connecting column;The top end of base body is connected with first protective plate, and base body is equipped with first installation area and second installation area respectively located in the two sides of first protective plate;Second protective plate is equipped in the top end of base body, and second protective plate is set corresponding to first installation area, and it is located in the end of base body close to battery module interior, and second protective plate is connected with first protective plate;First installation area is used to arrange the output pole piece of battery module, and second installation area is used to arrange the low-voltage connector of battery module.The utility model can reduce the base quantity requirement when output pole piece and low-voltage connector are arranged, can take into account the installation convenience and lightweight demand when output pole piece and low-voltage connector are arranged, and can achieve better high-pressure safety.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, specifically to an output electrode base, a battery module, and a solid-state battery pack. Background Technology

[0002] As new energy passenger and commercial vehicles continue to pursue longer driving ranges and faster charging capabilities, the operating voltage of power battery packs is gradually increasing. This leads to a greater potential difference between the output electrode (high voltage) and the BMS sampling / communication connector (low voltage). For reasons such as high-voltage and low-voltage isolation, different insulating bases are typically required for the output electrode and the low-voltage connector. However, multiple bases require significant installation space, which is detrimental to the structural design of the battery module and hinders the ease of assembly and lightweight design of the battery module. Utility Model Content

[0003] This utility model aims to solve, to a certain extent, the problem of how to balance the ease of installation, high-voltage safety, and lightweight requirements when arranging output electrodes and low-voltage connectors.

[0004] To at least partially address at least one aspect of the aforementioned problems, in a first aspect, this utility model provides an output electrode base, comprising a base body, a connecting post, a first protective plate, and a second protective plate; the bottom end of the base body is connected to the connecting post; the top end of the base body is connected to the first protective plate, and the base body has a first mounting area and a second mounting area respectively located on both sides of the first protective plate; the second protective plate is located at the top end of the base body, corresponding to the first mounting area, and located at one end of the base body near the inside of the battery module, and the second protective plate is connected to the first protective plate; the first mounting area is used to arrange the output electrode of the battery module, and the second mounting area is used to arrange the low-voltage connector of the battery module.

[0005] Optionally, the second protective plate is located outside the CCS separator of the battery module, the inner side of the second protective plate is opposite to the end face of the CCS separator, and the top surface of the second protective plate is lower than or flush with the top surface of the CCS separator.

[0006] Optionally, the top of the second protective plate is provided with a notch; the output electrode is provided with an extension transition section, a vertical extension section and a horizontal extension section connected in sequence, the first mounting area is used to arrange the horizontal extension section, the notch is used to accommodate the extension transition section, and the portion of the second protective plate below the notch is arranged opposite to the vertical extension section.

[0007] Optionally, the output electrode base further includes a third protective plate and a baffle. The third protective plate is disposed opposite to the first protective plate and is located at the edge of the second mounting area. The baffle is connected to the top of the first protective plate and the third protective plate respectively. The base body, the first protective plate, the third protective plate and the baffle together form a limiting cavity, which is used to accommodate the low-voltage connector.

[0008] Optionally, in the extending direction of the first protective plate, the size of the baffle is smaller than the size of the top surface of the base body, and the inner end face of the baffle is spaced apart from the inner end face of the base body by a preset distance. And / or, the first protective plate and the second protective plate are respectively provided with snap-fit ​​holes, and the bottom end of the baffle is provided with snap-fit ​​posts, which are snapped into the snap-fit ​​holes.

[0009] Optionally, a fourth protective plate is provided on a designated side wall of the base body. The designated side wall is located at the end of the first installation area away from the first protective plate. The fourth protective plate is located at the end of the designated side wall close to the inside of the battery module and is set at an angle to the designated side wall. The end face of the second protective plate away from the first protective plate is aligned with the end face of the fourth protective plate away from the designated side wall. And / or, a boss is provided on the top of the base body near the inside of the battery module, and the second protective plate is connected to the boss; the base body is disposed on the support platform of the frame end plate of the battery module, the connecting post is inserted into the connecting hole provided on the support platform, and the projections of the boss and the second protective plate in the vertical direction at least partially fall on the baffle of the frame end plate, the baffle is located on the side of the support platform near the inside of the battery module, and the top surface of the baffle is higher than the top surface of the support platform.

[0010] Optionally, the number of the connecting posts is multiple; The plurality of connecting columns include waist-shaped columns and circular columns; And / or, the output electrode base further includes a nut insert, the nut insert being disposed in the first mounting area, wherein the axis of the circular cylinder and the axis of the nut insert do not coincide.

[0011] Secondly, this utility model provides a battery module, including a frame end plate, a frame side plate, an output electrode, a low-voltage connector, and an output electrode base as described in any one of the first aspects above; the frame end plate is provided with a connection hole, the base body of the output electrode base is supported on the frame end plate, the connecting post of the output electrode base is inserted into the connection hole, the first mounting area of ​​the output electrode base is connected to the output electrode, and the second mounting area of ​​the output electrode base is connected to the low-voltage connector.

[0012] Optionally, the frame end plate is provided with a support platform and a baffle wall located on the side of the support platform near the inside of the battery module. The top surface of the baffle wall is higher than the top surface of the support platform. The baffle wall is welded to the frame side plate, and the connection hole is provided in the support platform. The projections of the boss on the base body and the second protective plate of the output electrode base in the vertical direction both fall at least partially on the baffle. And / or, the support platform is provided with at least one of a process hoisting hole and a locking hole on the side of the base body.

[0013] Thirdly, this utility model provides a battery pack, including the battery module described in the second aspect above.

[0014] In the output electrode base, battery module, and solid-state battery pack of this utility model, the bottom end of the base body of the output electrode base can be supported on the frame end plate. The connecting post at the bottom end of the base body can be inserted into the connecting hole provided on the frame end plate, thereby realizing the relative positioning of the base body and the frame end plate. The low-voltage connector of the battery module is arranged in the second mounting area of ​​the base body, and the output electrode of the battery module is arranged in the first mounting area of ​​the base body. The output electrode is located above the output electrode base. The connection between the output electrode and the output electrode base can restrict the separation of the connecting post and the connecting hole of the output electrode base, which facilitates the convenient installation of the output electrode and the low-voltage connector. At the same time, the first mounting area... The first and second mounting areas are located on either side of the first protective plate. The first protective plate ensures the creepage distance between the output electrode and the low-voltage connector, guaranteeing high- and low-voltage isolation. The second protective plate corresponds to the first mounting area and is located at the end of the base body closer to the inside of the battery module. The second protective plate increases the creepage distance between the output electrode and internal components or frame end plates of the battery module, ensuring high-voltage isolation of the output electrode. Therefore, the arrangement and connection of the second and first protective plates can provide initial positioning of the output electrode installation in multiple directions, ensuring creepage distances in multiple directions and guaranteeing the safety of high-voltage isolation. Overall, this invention reduces the number of bases required when arranging the output electrode and low-voltage connector, facilitating both installation convenience and lightweight design, while achieving good high-voltage safety. It also features a simple structure and strong practicality. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of the battery module after the output terminal base is separated from its mounting position in an embodiment of this utility model; Figure 2 This is a schematic diagram of the output electrode base used in the battery module in an embodiment of the present invention; Figure 3 for Figure 2 A schematic diagram of the structure shown from another perspective; Figure 4 for Figure 3 Schematic sectional view at section AA; Figure 5 This is a schematic diagram of the output electrode base in an embodiment of the present invention; Figure 6 This is another structural schematic diagram of the output electrode base in an embodiment of this utility model; Figure 7 for Figure 6 sectional view at section BB; Figure 8 This is a schematic diagram of the output electrode base when the second protective plate has a notch in an embodiment of this utility model; Figure 9 for Figure 8 The diagram shown is a structural schematic of the output terminal base used in the battery module.

[0016] Explanation of reference numerals in the attached figures: 1-Output pole base; 11-Base body; 111-First mounting area; 112-Second mounting area; 113-Setting sidewall; 12-Connecting post; 12A-Oval post; 12B-Circular post; 13-First protective plate; 131-Snap-fit ​​hole; 14-Second protective plate; 141-Notch; 15-Third protective plate; 16-Baffle; 161-Snap-fit ​​post; 162-Limiting protrusion; 17-Fourth protective plate; 18-Protrusion 19-Nut insert; 2-Output electrode; 21-Extension transition section; 22-Vertical extension section; 23-Horizontal extension section; 3-Low voltage connector; 4-Frame end plate; 41-Support platform; 42-Baffle; 43-Connection hole; 431-Oval hole; 432-Circular hole; 44-Locking hole; 45-Process hoisting hole; 5-Frame side plate; 6-CCS isolation plate; 7-Battery cell unit; 81-Signal line; 82-Heat insulation pad. Detailed Implementation

[0017] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0018] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0019] In the description of this specification, the references to terms such as "embodiment," "one embodiment," "some implementations," "exemplary," and "one implementation," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or implementation of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0020] The terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature.

[0021] In the attached diagram, the Z-axis represents the vertical direction, i.e., the up-down position, and the positive direction of the Z-axis (i.e., the direction the arrow points) indicates up, while the negative direction indicates down. In the attached diagram, the X-axis represents the front-back position, and the positive direction of the X-axis (i.e., the direction the arrow points) indicates the front, while the negative direction indicates the back. In the attached diagram, the Y-axis represents the horizontal direction and is designated as the left-right position, and the positive direction of the Y-axis (i.e., the direction the arrow points) indicates the right side, while the negative direction indicates the left side. It should be noted that the aforementioned representations of the Z-axis, Y-axis, and X-axis are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0022] like Figure 1 , 2 As shown, an embodiment of this utility model provides an output electrode base 1, which includes a base body 11, a connecting post 12, a first protective plate 13, and a second protective plate 14. The bottom end of the base body 11 is connected to the connecting post 12. The top end of the base body 11 is connected to the first protective plate 13, and the base body 11 has a first mounting area 111 and a second mounting area 112 located on both sides of the first protective plate 13. The second protective plate 14 is located at the top end of the base body 11, corresponding to the first mounting area 111, and located at one end of the base body 11 near the inside of the battery module. The second protective plate 14 is connected to the first protective plate 13. The first mounting area 111 is used to arrange the output electrode 2 of the battery module, and the second mounting area 112 is used to arrange the low-voltage connector 3 of the battery module.

[0023] For example, the battery module includes a frame, a cell unit 7, a sampling component, a high-voltage connection system, and a low-voltage connector 3. The frame includes frame side plates 5 arranged opposite each other in the X-axis direction and frame end plates 4 arranged opposite each other in the Y-axis direction. The frame side plates 5 and frame end plates 4 are connected to form a frame. The frame side plates 5 and frame end plates 4 are usually made of metal. Both frame end plates 4 can be reserved with connection holes 43 for the direct insertion of the connecting posts 12 of the output electrode base 1. The cell unit 7 is composed of solid cells stacked together, with insulating partitions between the cells. One or both ends of the battery module are provided with output electrode plates 2 for external output and low-voltage connectors 3. The output electrode plates 2 are fixed to the first mounting area 111 of the output electrode base 1 to realize the output of electrical energy of the battery module. The low-voltage connector 3 is arranged in the second mounting area 112 of the output electrode base 1 for electrical connection with the battery management system to realize the function of battery module information acquisition, such as cell temperature acquisition.

[0024] like Figure 1 , 2 As shown, the bottom end of the base body 11 is supported on the frame end plate 4, and the connecting post 12 at the bottom end of the base body 11 is inserted into the connecting hole 43 provided on the frame end plate 4, thereby realizing the relative position positioning of the base body 11 and the frame end plate 4 and restricting the relative displacement of the two in the X-axis direction and the Y-axis direction.

[0025] The first mounting area 111 is used to arrange the output electrode 2 of the battery module. The first mounting area 111 can be arranged with a fixing structure for fixing the output electrode 2 as needed. For example, the output electrode base 1 also includes a nut insert 19, which is fitted into the first mounting area 111 of the base body 11. Fasteners pass through the connecting copper busbar and the output electrode 2 of the battery pack and are threadedly connected to the nut insert 19. Correspondingly, the second mounting area 112 can be arranged with a fixing structure for fixing the low-voltage connector 3 as needed, which will be described in the following example.

[0026] It should be understood that the output electrode base 1 needs to achieve insulation between the output electrode 2 and the frame end plate 4, and also needs to achieve insulation between the low voltage connector 3 and the frame end plate 4. The main body of the output electrode base 1 is usually made of insulating materials such as plastic. That is to say, the base body 11, the connecting post 12, the first protective plate 13 and the second protective plate 14 are made of plastic, and the nut insert 19 is made of metal.

[0027] like Figure 1As shown, taking the output electrode base 1 located at the negative end of the Y-axis direction, i.e., the left end, as an example, the first mounting area 111 and the second mounting area 112 are distributed along the X-axis direction. The first protective plate 13 is parallel to the YZ plane, and the second protective plate 14 is parallel to the XZ plane. The second protective plate 14 is connected to the first protective plate 13. It should be understood that the battery cell unit 7 is arranged on the inner side of the second protective plate 14 in the Y-axis direction. The second protective plate 14 can provide physical protection for the battery cell unit 7 and can also provide electrical isolation protection to a certain extent.

[0028] Thus, the bottom end of the base body 11 of the output electrode base 1 can be supported on the frame end plate 4, and the connecting post 12 at the bottom end of the base body 11 can be inserted into the connecting hole 43 provided on the frame end plate 4, thereby realizing the relative position positioning of the base body 11 and the frame end plate 4. The low-voltage connector 3 of the battery module is arranged in the second mounting area 112 of the base body 11, and the output electrode 2 of the battery module is arranged in the first mounting area 111 of the base body 11. The output electrode 2 is located above the output electrode base 1. The connection between the output electrode 2 and the output electrode base 1 can restrict the separation of the connecting post 12 and the connecting hole 43 of the output electrode base 1, which facilitates the convenient installation of the output electrode 2 and the low-voltage connector 3. At the same time, the first mounting area 111 and the first mounting area 112 of the base body 11 are used to arrange the low-voltage connector 3 of the battery module. The two mounting areas 112 are located on both sides of the first protective plate 13. The first protective plate 13 ensures the creepage distance between the output electrode 2 and the low-voltage connector 3, ensuring the effect of high and low voltage isolation. The second protective plate 14 is set corresponding to the first mounting area 111. The second protective plate 14 is located at the end of the base body 11 near the inside of the battery module. The second protective plate 14 can increase the creepage distance between the output electrode 2 and the internal components or frame end plate 4 of the battery module, ensuring high voltage isolation of the output electrode 2. Thus, the setting and connection of the second protective plate 14 and the first protective plate 13 can form a preliminary positioning of the output electrode 2 in multiple directions, ensuring the creepage distance of the output electrode 2 in multiple directions, and ensuring the safety of high voltage isolation. Overall, this utility model can reduce the number of bases required when arranging the output electrode 2 and the low-voltage connector 3, which is beneficial to taking into account the installation convenience and lightweight requirements when arranging the output electrode 2 and the low-voltage connector 3, and can achieve good high voltage safety. It has a simple structure and strong practicality.

[0029] like Figure 9 As shown, optionally, the second protective plate 14 is located outside the CCS isolation plate 6 of the battery module, the inner side of the second protective plate 14 is opposite to the end face of the CCS isolation plate 6, and the top surface of the second protective plate 14 is lower than or flush with the top surface of the CCS isolation plate 6.

[0030] (Cells Contact System) The CCS isolation plate 6 is located above the cell unit 7 of the battery module. It is mainly used to carry the busbar of the battery module and isolate the wiring harness in the battery module to ensure electrical isolation between the wiring harnesses and the stability of signal transmission. The top surface of the CCS isolation plate 6, that is, the side of the CCS isolation plate 6 facing away from the cell, is usually made of insulating material (such as plastic).

[0031] Similarly, taking the output electrode base 1 located at the negative end of the Y-axis direction, that is, the left end, as an example, its second protective plate 14 is located on the outer side of the left end of the CCS isolation plate 6 of the battery module, and the right side of the second protective plate 14 (that is, the side facing the inside of the battery module) is set opposite to the left end of the CCS isolation plate 6.

[0032] Thus, in this embodiment, the second protective plate 14 is positioned outside the CCS separator 6 of the battery module. The inner side of the second protective plate 14 is positioned opposite to the end face of the CCS separator 6, for example, maintaining a small gap between them. The top surface of the second protective plate 14 is not higher than the top surface of the CCS separator 6, nor lower than the bottom surface of the CCS separator 6. The top surface of the second protective plate 14 and the top surface of the CCS separator 6 are "flush or slightly lower". Firstly, this avoids the top surface of the second protective plate 14 being too high, which would affect the assembly of the output electrode 2 (a portion of the output electrode 2 is located above the CCS separator 6). Firstly, another part of the output electrode 2 needs to cross the second protective plate 14 to be arranged in the first mounting area 111 of the base body 11. Therefore, the top surface of the second protective plate 14 should not be higher than the top surface of the CCS isolation plate 6. Secondly, the second protective plate 14 has a relatively large dimension in the Z direction, which can increase the creepage distance of the output electrode 2 from the second protective plate 14 to the inside of the battery module or the frame end plate 4, thereby improving the high voltage safety of the battery module. Thirdly, the second protective plate 14 and the CCS isolation plate 6 can jointly form a relatively continuous insulating barrier in the YZ plane, which can improve the high voltage protection effect of the output electrode 2.

[0033] like Figure 8 , 9 As shown, optionally, the top of the second protective plate 14 is provided with a notch 141; the output electrode 2 is provided with an extension transition section 21, a vertical extension section 22 and a horizontal extension section 23 connected in sequence, the first mounting area 111 is used to arrange the horizontal extension section 23, the notch 141 is used to accommodate the extension transition section 21, and the part of the second protective plate 14 below the notch 141 is arranged opposite to the vertical extension section 22.

[0034] Taking the output electrode base 1 located at the negative Y-axis end, i.e., the left end, as an example, the body of the corresponding output electrode 2 is electrically connected to the battery cell, for example, through a tab. The left end of its body extends to the left along the Y-axis to form an extension transition section 21. The upper end of the vertical extension section 22 is connected to the extension transition section 21, and the right end of the horizontal extension section 23 is connected to the lower end of the vertical extension section 22. It should be understood that, for ease of forming, the left end of the extension transition section 21 can be connected to the upper end of the vertical extension section 22 through an arc-shaped transition part, and the right end of the horizontal extension section 23 can be connected to the lower end of the vertical extension section 22 through an arc-shaped transition part.

[0035] Thus, in this embodiment, the top of the second protective plate 14 of the output electrode base 1 is provided with a notch 141, which is used to accommodate the extension transition section 21 of the output electrode 2. The output electrode base 1 is connected to the lateral extension section 23 in the first mounting area 111. The vertical extension section 22 of the output electrode 2 and the second protective plate 14 are arranged opposite to each other below the notch 141. This design avoids interference between the output electrode 2 and the second protective plate 14 without requiring the output electrode 2 to be designed with an upward arched shape. It also takes into account the need for high voltage isolation through the second protective plate 14. The top surface of the second protective plate 14 can be flush with the top surface of the CCS isolation plate 6 or have a smaller height difference, ensuring the creepage distance of the output electrode 2 at the second protective plate 14 and ensuring the safety of high voltage isolation.

[0036] like Figure 1 As shown in the above embodiment, optionally, the output electrode base 1 further includes a third protective plate 15, which is disposed opposite to the first protective plate 13 and is located at the edge of the second mounting area 112.

[0037] For example, taking the output electrode base 1 at the left end as an example, the third protective plate 15 and the first protective plate 13 are distributed sequentially along the negative X-axis direction, and the low-voltage connector 3 is arranged within the space defined by the third protective plate 15, the first protective plate 13 and the base body 11. Of course, further fixing measures can be adopted to fix the low-voltage connector 3 as needed, which can employ relevant technologies.

[0038] like Figure 1 , 2 As shown, the output base 1 further includes a baffle 16, which is connected to the top of the first protective plate 13 and the third protective plate 15 respectively. The base body 11, the first protective plate 13, the third protective plate 15 and the baffle 16 together form a limiting cavity, which is used to accommodate the low-voltage connector 3.

[0039] Specifically, after the low-voltage connector 3 is placed in the space defined by the third protective plate 15, the first protective plate 13 and the base body 11, the baffle 16 is connected to the first protective plate 13 and the third protective plate 15 respectively to form a limiting cavity. The limiting cavity can restrict the displacement of the low-voltage connector 3 and ensure the positional stability of the low-voltage connector 3 on the output electrode base 1.

[0040] It should be understood that the way the baffle 16 is connected to the top of the first protective plate 13 and the third protective plate 15 is not limited; for example, screw connection can be used.

[0041] like Figure 1 As shown, in the exemplary solution, the first protective plate 13 and the second protective plate 14 are respectively provided with snap-fit ​​holes 131, and the bottom end of the baffle 16 is provided with snap-fit ​​posts 161, which are snap-fitted into the snap-fit ​​holes 131.

[0042] Specifically, the bottom end of the snap-fit ​​post 161 is provided with a limiting protrusion 162. When the limiting protrusion 162 is accommodated in the corresponding snap-fit ​​hole 131, the bottom end of the baffle 16 abuts against the top end of the first protective plate 13 and the second protective plate 14 respectively, thereby fixing the position of the baffle 16 relative to the first protective plate 13 and the second protective plate 14.

[0043] like Figure 1 , 6 As shown, in a further embodiment, in the extending direction of the first protective plate 13, the size of the baffle 16 is smaller than the size of the top surface of the base body 11, and the inner end face of the baffle 16 is spaced apart from the inner end face of the base body 11 by a preset distance.

[0044] Taking the output electrode base 1 on the left as an example, along the Y-axis direction, the size of the baffle 16 is smaller than the size of the top surface of the base body 11, and the inner end face of the baffle 16 (the end face along the positive Y-axis) is spaced apart from the inner end face of the base body 11 (the end face along the positive Y-axis) by a preset distance. In other words, along the Y-axis direction, the distance from the inner end face of the baffle 16 to the outer end face of the base body 11 is smaller than the distance from the inner end face of the base body 11 to the outer end face of the base body 11.

[0045] like Figure 1 , 2 As shown, it should be noted that the inner end of the low-voltage connector 3 is usually connected to the signal line 81, and similar to the vertical extension 22 of the output electrode 2, the signal line 81 also requires corresponding layout space. In this embodiment, the size of the baffle 16 is relatively small, and the space for the possible arrangement of the signal line 81 can be reserved by setting the above-mentioned preset distance.

[0046] It should be understood that the preset distance can be determined according to actual needs. For example, along the Y-axis direction, the distance from the inner end face of the base body 11 to the outer end face of the base body 11 is defined as the first distance. This preset distance can be greater than or equal to one-fifth of the first distance, and less than or equal to one-half of the first distance. For example, the preset distance can be one-third of the first distance. In addition, this setting method is also conducive to reducing the weight of the baffle 16 and to the lightweight design of the output pole base 1.

[0047] refer to Figure 4 As shown, the low-voltage connector 3 is used for mating with an external connector in, for example, the Y-axis direction. In some scenarios, along the positive Y-axis direction, the low-voltage connector 3 has a multi-segment structure, wherein the length segment near the positive Y-axis end has a relatively small dimension in the Z-axis direction, and the baffle 16 is arranged at this length segment. The top surface of the length segment located at the negative Y-axis end is higher than or flush with the top surface of the baffle 16.

[0048] like Figure 1 , 2 As shown in the above embodiment, optionally, a fourth protective plate 17 is provided at the set side wall 113 of the base body 11. The set side wall 113 is located at the end of the first installation area 111 away from the first protective plate 13. The fourth protective plate 17 is located at the end of the set side wall 113 close to the inside of the battery module and is set at an angle to the set side wall 113. The end face of the second protective plate 14 away from the first protective plate 13 is aligned with the end face of the fourth protective plate 17 away from the set side wall 113.

[0049] Specifically, taking the output electrode base 1 on the left as an example, the side wall 113 is set as the rear side wall of the base body 11, and the fourth protective plate 17 is located at the right end of the rear side wall of the base body 11. Along the X-axis, the rear end face of the second protective plate 14 can be flush with the rear end face of the fourth protective plate 17.

[0050] In some scenarios, the frame end plate 4 and frame side plate 5 are made of metal. In this case, the setting of the fourth protective plate 17 can ensure the creepage distance of the output electrode 2 near the set side wall 113, thereby ensuring the creepage distance between the output electrode 2 and the frame end plate 4 and ensuring high voltage safety.

[0051] like Figure 1As shown, in some scenarios, the frame end plate 4 may need to be equipped with process lifting holes 45 and locking holes 44 according to process or design requirements. When the first installation area 111 is sufficient to arrange the output electrode 2, the high voltage safety of the output electrode base 1 can be improved by setting the fourth protective plate 17, so as to minimize the space occupied by the output electrode base 1, which is conducive to the lightweight design of the output electrode base 1 and can also leave corresponding arrangement space for other structures. For example, when the connecting post 12 of the output electrode base 1 is inserted into the connecting hole 43 of the frame end plate 4, the process lifting holes 45 and locking holes 44 of the frame end plate 4 can be arranged on the side of the fourth protective plate 17.

[0052] like Figure 1 , 2 As shown in the above embodiment, optionally, a boss 18 is provided on the top of the base body 11 near the inside of the battery module, and the second protective plate 14 is connected to the boss 18; the base body 11 is disposed on the support platform 41 of the frame end plate 4 of the battery module, the connecting post 12 is inserted into the connecting hole 43 provided in the support platform 41, and the projections of the boss 18 and the second protective plate 14 in the vertical direction at least partially fall on the baffle 42 of the frame end plate 4, and the baffle 42 is located on the side of the support platform 41 near the inside of the battery module.

[0053] Taking the output electrode base 1 on the left as an example, the right end face of the second protective plate 14 can be flush with the right end face of the boss 18. The dimension of the second protective plate 14 in the Y-axis direction can be smaller than the dimension of the boss 18 in the Y-axis direction. Of course, it can be set according to actual needs and is not limited to this.

[0054] In the frame end plate 4, the support platform 41 is located at the left end of the baffle 42. The top surface of the support platform 41 is lower than the position of the baffle 42 in the vertical direction. Based on this, the construction method of the support platform 41 is not limited. For example, it can be formed by setting a protruding part on the outside of the main body of the frame end plate 4, or it can be formed by setting a missing part on the outside of the top of the frame end plate 4, or it can be formed by combining the two methods.

[0055] like Figure 3 , 4 As shown, the main reference is... Figure 4The frame end plate 4 needs to limit the internal heat insulation pad 82, battery cell unit 7, etc. In some scenarios, the frame end plate 4 also needs to be welded to the frame side plate 5. The frame end plate 4 supports the output electrode base 1 through the support platform 41. The top surface of the baffle 42 is higher than the top surface of the support platform 41. The baffle 42 can ensure the limitation of the internal components of the frame, and the baffle 42 and the frame side plate 5 can obtain a large contact surface, which is conducive to obtaining a longer weld length and ensuring connection quality. The setting of the boss 18 allows the setting of the second protective plate 14 to utilize the space above the baffle 42, avoiding the need for the output electrode base 1 to occupy more extra space in the Y-axis direction due to the arrangement of the second protective plate 14, thus avoiding affecting the space utilization of the battery module. At the same time, the second protective plate 14 is located above the baffle 42, which can limit the internal components of the frame to a certain extent, forming a better protection.

[0056] In the above embodiments, optionally, the number of connecting posts 12 is multiple. When the number of connecting posts 12 is multiple, it is beneficial to improve the reliability of the connection between the output electrode base 1 and the frame end plate 4 by connecting multiple connecting posts 12 to multiple connecting holes 43 at the support platform 41, thereby reducing the possibility of the output electrode base 1 wobbling due to fitting clearance and processing errors.

[0057] like Figure 1 , 5 As shown in Figure 7, further, the plurality of connecting posts 12 include an oblong post 12A and a circular post 12B. Correspondingly, the plurality of connecting holes 43 include an oblong hole 431 and a circular hole 432.

[0058] like Figure 5-7 As shown, specifically, the length direction of the waist-shaped column 12A is consistent with the length direction of the base body 11, and this length direction is consistent with the X-axis direction in the figure. A circular column 12B is provided on one side of the waist-shaped column 12A.

[0059] like Figure 1 As shown, the support platform 41 has an oblong hole 431, and a circular column 12B is provided on the side of the oblong hole 431. In some scenarios, the battery module is equipped with output electrode bases 1 at both ends in the Y-axis direction. In this case, for the sake of material uniformity, the frame end plate 4 can be provided with one oblong hole 431 and two circular holes 432, and the output electrode base 1 is provided with only one oblong column 12A and one circular column 12B. The structure of the output electrode bases 1 at both ends in the Y-axis direction can be the same, but the installation direction is different. For example, the circular column 12B of the output electrode base 1 at the left end is inserted into the circular hole 432 near the rear end of the frame end plate 4 at the left end, and the circular column 12B of the output electrode base 1 at the right end is inserted into the circular hole 432 near the front end of the frame end plate 4 at the right end.

[0060] In this way, the waist-shaped column 12A and the waist-shaped hole 431 are connected, and the two can obtain a relatively large contact surface, which improves the stability of the connection. By using the connection between the circular column 12B and the circular hole 432, the possibility of the waist-shaped column 12A shaking in the waist-shaped hole 431 due to the reserved gap and processing error can be reduced, thereby improving the stability of the relative position of the output pole base 1 and the frame end plate 4.

[0061] like Figure 1 , 6 As shown in Figures 7 and 8, in the above embodiments, optionally, the output pole base 1 further includes a nut insert 19, which is disposed in the first mounting area 111; the connecting post 12 includes a circular post 12B, the axis of the circular post 12B and the axis of the nut insert 19 do not coincide.

[0062] In this way, when the nut insert 19 is subjected to force due to its connection with the connecting copper busbar and output electrode 2 of the battery pack, this force can be distributed and transmitted to multiple connecting posts 12. This avoids the circular post 12B being subjected to excessive force concentration due to the coaxiality of the nut insert 19, which helps to improve the stress condition of the circular post 12B and enhance its reliability and service life.

[0063] An embodiment of this utility model also provides a battery module, including a frame end plate 4, a frame side plate 5, an output electrode 2, a low-voltage connector 3, and the aforementioned output electrode base 1. The frame end plate 4 is provided with a connection hole 43. The base body 11 of the output electrode base 1 is supported on the frame end plate 4. The connecting post 12 of the output electrode base 1 is accommodated in the connection hole 43. The first mounting area 111 of the output electrode base 1 is connected to the output electrode 2, and the second mounting area 112 of the output electrode base 1 is connected to the low-voltage connector 3.

[0064] Optionally, the frame end plate 4 is provided with a support platform 41 and a baffle 42 located on the side of the support platform 41 near the inside of the battery module. The top surface of the baffle 42 is higher than the top surface of the support platform 41. The baffle 42 is welded to the frame side plate 5. The connection hole 43 is provided on the support platform 41. The projections of the boss 18 of the base body 11 and the second protective plate 14 of the output electrode base 1 in the vertical direction both fall at least partially on the baffle 42.

[0065] like Figure 1 As shown, optionally, the support platform 41 is provided with at least one of a process hoisting hole 45 and a locking hole 44 on the side of the base body 11.

[0066] It should be understood that some relevant content regarding battery modules has already been explained above and will not be repeated here. In some scenarios, it is necessary to lift semi-finished or finished battery modules during the production process. The process lifting holes 45 are designed for this purpose, and process lifting holes 45 are usually arranged near both ends of the support platform 41 in the front and rear directions. Solid-state battery packs typically include multiple battery modules, and locking holes 44 are used to connect to the bottom shell of the solid-state battery pack, which will not be described in detail here.

[0067] An embodiment of this utility model also provides a solid-state battery pack, including the battery module described in the above embodiment.

[0068] The battery module and solid-state battery pack have all the beneficial effects of the output terminal base 1, which will not be elaborated here.

[0069] Although the present invention has been disclosed above, its protection scope is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the present invention, and all such changes and modifications will fall within the protection scope of the present invention.

Claims

1. An output electrode base, characterized in that, The output electrode base includes a base body (11), a connecting post (12), a first protective plate (13), and a second protective plate (14); the bottom end of the base body (11) is connected to the connecting post (12); the top end of the base body (11) is connected to the first protective plate (13), and the base body (11) is provided with a first mounting area (111) and a second mounting area (112) located on both sides of the first protective plate (13); the second protective plate (14) is located at the top end of the base body (11), the second protective plate (14) is provided corresponding to the first mounting area (111), and is located at one end of the base body (11) near the inside of the battery module, and the second protective plate (14) is connected to the first protective plate (13); the first mounting area (111) is used to arrange the output electrode (2) of the battery module, and the second mounting area (112) is used to arrange the low-voltage connector (3) of the battery module.

2. The output electrode base as described in claim 1, characterized in that, The second protective plate (14) is located outside the CCS isolation plate (6) of the battery module. The inner side of the second protective plate (14) is opposite to the end face of the CCS isolation plate (6). The top surface of the second protective plate (14) is lower than or flush with the top surface of the CCS isolation plate (6).

3. The output electrode base as described in claim 2, characterized in that, The second protective plate (14) has a notch (141) at its top; the output electrode (2) has an extension transition section (21), a vertical extension section (22) and a horizontal extension section (23) connected in sequence. The first installation area (111) is used to arrange the horizontal extension section (23), and the notch (141) is used to accommodate the extension transition section (21). The part of the second protective plate (14) below the notch (141) is arranged opposite to the vertical extension section (22).

4. The output electrode base as described in claim 1, characterized in that, The output electrode base also includes a third protective plate (15) and a baffle (16). The third protective plate (15) is disposed opposite to the first protective plate (13) and is located at the edge of the second mounting area (112). The baffle (16) is connected to the top of the first protective plate (13) and the third protective plate (15) respectively. The base body (11), the first protective plate (13), the third protective plate (15) and the baffle (16) together form a limiting cavity, which is used to accommodate the low-voltage connector (3).

5. The output electrode base as described in claim 4, characterized in that, In the extending direction of the first protective plate (13), the size of the baffle (16) is smaller than the size of the top surface of the base body (11), and the inner end face of the baffle (16) is spaced apart from the inner end face of the base body (11) by a preset distance. And / or, the first protective plate (13) and the second protective plate (14) are respectively provided with snap-fit ​​holes (131), and the bottom end of the baffle (16) is provided with snap-fit ​​posts (161), and the snap-fit ​​posts (161) are snapped into the snap-fit ​​holes (131).

6. The output electrode base as described in any one of claims 1 to 5, characterized in that, The base body (11) has a fourth protective plate (17) on a set side wall (113). The set side wall (113) is located at the end of the first installation area (111) away from the first protective plate (13). The fourth protective plate (17) is located at the end of the set side wall (113) close to the inside of the battery module and is set at an angle to the set side wall (113). The end face of the second protective plate (14) away from the first protective plate (13) is aligned with the end face of the fourth protective plate (17) away from the set side wall (113). And / or, the top of the base body (11) is provided with a boss (18) on the side near the inside of the battery module, and the second protective plate (14) is connected to the boss (18); the base body (11) is set on the support platform (41) of the frame end plate (4) of the battery module, the connecting column (12) is inserted into the connecting hole (43) provided in the support platform (41), and the projections of the boss (18) and the second protective plate (14) in the vertical direction are at least partially placed on the baffle (42) of the frame end plate (4), the baffle (42) is located on the side of the support platform (41) near the inside of the battery module, and the top surface of the baffle (42) is higher than the top surface of the support platform (41).

7. The output electrode base as described in any one of claims 1 to 5, characterized in that, The number of the connecting posts (12) is multiple; The plurality of connecting posts (12) include a waist-shaped post (12A) and a circular post (12B); And / or, the output pole base further includes a nut insert (19), the nut insert (19) being disposed in the first mounting area (111), and the axis of the circular column (12B) and the axis of the nut insert (19) not coinciding with each other.

8. A battery module, characterized in that, The device includes a frame end plate (4), a frame side plate (5), an output electrode (2), a low-voltage connector (3), and an output electrode base as described in any one of claims 1 to 7; the frame end plate (4) is provided with a connection hole (43), the base body (11) of the output electrode base is supported on the frame end plate (4), the connecting post (12) of the output electrode base is inserted into the connection hole (43), the first mounting area (111) of the output electrode base is connected to the output electrode (2), and the second mounting area (112) of the output electrode base is connected to the low-voltage connector (3).

9. The battery module as described in claim 8, characterized in that, The frame end plate (4) is provided with a support platform (41) and a baffle (42) located on the side of the support platform (41) near the inside of the battery module. The top surface of the baffle (42) is higher than the top surface of the support platform (41). The baffle (42) is welded to the frame side plate (5). The connection hole (43) is provided on the support platform (41). The projections of the boss (18) of the base body (11) and the second protective plate (14) of the output pole base in the vertical direction both fall at least partially on the baffle (42). And / or, the support platform (41) is provided with at least one of a process hoisting hole (45) and a locking hole (44) on the side of the base body (11).

10. A solid-state battery pack, characterized in that, Includes the battery module as described in claim 8 or 9.

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