Pole assembly and battery

Abstract

The utility model provides a pole assembly and a battery. The pole assembly comprises a pressing block, a pole body and an annular boss, a mounting hole is formed in the pressing block; the pole body is positioned in the mounting hole; the annular boss is arranged at the joint of the pressing block and the pole body, the pressing block and the pole body are fixedly connected through the annular boss, and the annular boss is used for fusing and connecting the pressing block and the pole body when the pole body and the pressing block are welded. The utility model aims to solve the technical problem of poorer connection stability caused by poor welding between the pole body and the pressing block in the prior art.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a pole assembly and battery. BACKGROUND

[0002] In the related art, the cover plate assembly of the battery mainly comprises a lower plastic part, a pole, a pressing block, a top cover, a sealing element and a connecting sheet, wherein the pole and the pressing block are connected through welding, and when the welding temperature is too high during the welding process, there may be a poor welding phenomenon, such as virtual welding, false welding or explosive welding, which leads to poor connection stability between the pole body and the pressing block. SUMMARY

[0003] The embodiments of the utility model provide a pole assembly and battery, and the utility model aims at solving the technical problem of poor connection stability caused by poor welding between the pole body and the pressing block in the related art.

[0004] In a first aspect, the embodiments of the utility model provide a pole assembly, which comprises:

[0005] a pressing block provided with a mounting hole;

[0006] a pole body located in the mounting hole;

[0007] an annular boss arranged at the connection between the pressing block and the pole body, the pressing block and the pole body being fixedly connected through the annular boss, and the annular boss being used to melt and connect the pressing block and the pole body when the pole body and the pressing block are welded.

[0008] In an embodiment, a gap is formed between the pole body and the hole wall of the mounting hole, and the annular boss is at least partially located in the gap.

[0009] In an embodiment, the pole body has a first side face away from the pressing block, and the pressing block has a second side face close to the first side face.

[0010] The perpendicular distance from the first side face to the second side face along the axial direction of the pole body is L1, the height of the pressing block is L2, and the height of the annular boss is L3, wherein L1>L2, 0

[0011] In an embodiment, the pole body has a first side face away from the pressing block, and the pressing block has a second side face close to the first side face.

[0012] The vertical distance from the first side to the second side along the axial direction of the pole body is L1, the height of the pressing block is L2, and the height of the annular boss is L3, wherein L1 < L2, 0 < L3 < 0.5L1.

[0013] In an embodiment, the cross-sectional shape of the annular boss along the axial direction of the pole body is trapezoidal or triangular.

[0014] In an embodiment, the pole body has a first side away from the pressing block, the pressing block has a second side close to the first side, and the outer diameter of the annular boss is arranged to increase in the direction from the first side to the second side.

[0015] In an embodiment, the annular boss is arranged around the pole body and is integrally formed with the pole body; or,

[0016] The pole body has a first side away from the pressing block, the pressing block has a second side close to the first side, the annular boss is arranged at the second side of the pressing block, and the projection of the annular boss in the axial direction of the pole body coincides with the projection of the mounting hole in the axial direction of the pole body.

[0017] In an embodiment, a temperature sensing device is further included, which is arranged at the side of the pole body facing the pressing block and is configured to monitor the temperature of the pole body.

[0018] In an embodiment, a receiving groove is arranged at the side of the pole body facing the pressing block, and a through hole is formed in the pole body and communicates with the receiving groove.

[0019] The temperature sensing device includes a mounting plate and a temperature sensing wire, the temperature sensing wire is mounted on the mounting plate, the mounting plate is arranged in the receiving groove, and the temperature sensing wire passes through the through hole.

[0020] In a second aspect, an embodiment of the utility model provides a battery, which comprises the pole assembly.

[0021] The pressing block is provided with a mounting hole.

[0022] The pole body is located in the mounting hole.

[0023] The annular boss is arranged at the connection between the pressing block and the pole body, the pressing block and the pole body are fixedly connected through the annular boss, and the annular boss is used to melt and connect the pressing block and the pole body when the pole body and the pressing block are welded.

[0024] The embodiment of the utility model has the advantages that:

[0025] In the technical scheme of the utility model, the pole post assembly is simple in structure and convenient to weld, the pressing block is provided with a mounting hole, the pole post body is mounted in the mounting hole, thereby realizing the pre-fixing between the pole post body and the pressing block, the annular boss is arranged at the connecting position of the pressing block and the pole post body, when the pole post body and the pressing block are welded, the annular boss is fusedly connected with the pressing block and the pole post body, the annular boss can guarantee the layer depth of welding and ensure the welding quality, thereby avoiding the welding defects such as virtual welding, false welding or explosive welding, and improving the connecting strength of the pole post body and the pressing block. BRIEF DESCRIPTION OF DRAWINGS

[0026] In order to more clearly illustrate the technical scheme in the embodiments of the utility model, the drawings needed to be used in the embodiment description will be briefly introduced as follows, obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained according to these drawings without creative labor for those skilled in the art.

[0027] Figure 1 It is the structure schematic view of one embodiment of the pole post assembly provided by the utility model;

[0028] Figure 2 It is Figure 1 the front view of the pole post assembly;

[0029] Figure 3 It is Figure 1 the structure schematic view of one embodiment of the pole post body;

[0030] Figure 4 It is Figure 1 the structure schematic view of one embodiment of the pressing block;

[0031] Figure 5 It is the structure schematic view of another embodiment of the pole post assembly provided by the utility model;

[0032] Figure 6 It is Figure 5 the sectional view of the pole post assembly;

[0033] Figure 7 It is Figure 5 the structure schematic view of the temperature sensing device.

[0034] EXPLANATION OF DRAWINGS

[0035] Reference Name Reference Name 100 Pole assembly 22 Receiving slot 1 Compression block 23 Via hole 11 Mounting hole 3 Annular boss 12 Second side surface 4 Temperature sensing device 2 Pole body 41 Mounting plate 21 First side surface 42 Temperature sensing wire DETAILED DESCRIPTION

[0036] Clearly and completely describe the technical scheme in the embodiments of the utility model with reference to the drawings in the embodiments of the utility model, obviously, the described embodiments are only some embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the person skilled in the art without creative labor belong to the scope of protection of the utility model. In addition, it should be understood that the specific implementation described herein is only used to illustrate and explain the utility model, and is not used to limit the utility model. In the utility model, the orientation words such as 'up' and 'down' are generally used to indicate the up and down of the device in the actual use or working state, and the specific is the drawing direction in the drawing. And 'inner' and 'outer' are used in relation to the outline of the device.

[0037] In the related art, the cover plate assembly of the battery mainly includes a lower plastic part, a pole, a pressing block, a top cover, a sealing element and a connecting sheet, wherein the pole and the pressing block are connected through welding. During the welding process, when the welding temperature is too high, there will be a poor welding phenomenon, such as virtual welding, false welding or explosive welding, which leads to poor connection stability of the pole body and the pressing block.

[0038] Therefore, the utility model provides a pole assembly 100, Figures 1 to 7 The pole assembly 100 provided by the utility model has simple structure and high connection stability. The pole assembly 100 will be described in detail below in combination with the main drawings.

[0039] Please refer to Figure 1 The pole assembly 100 includes a pressing block 1, a pole body 2 and an annular boss 3. The pressing block 1 is provided with a mounting hole 11. The pole body 2 is located in the mounting hole 11. The annular boss 3 is arranged at the connection between the pressing block 1 and the pole body 2. The pressing block 1 and the pole body 2 are fixedly connected through the annular boss 3. The annular boss is used to melt and connect the pressing block 1 and the pole body 2 when the pole body 2 and the pressing block 1 are welded.

[0040] In the technical scheme of the utility model, the pole assembly 100 has simple structure and is convenient for welding. The pressing block 1 is provided with a mounting hole 11. The pole body 2 is installed in the mounting hole 11, thereby realizing the pre-fixing between the pole body 2 and the pressing block 1. The annular boss 3 is arranged at the connection between the pressing block 1 and the pole body 2. When the pole body 2 and the pressing block 1 are welded, the annular boss 3 melts and connects the pressing block 1 and the pole body 2. The annular boss 3 can ensure the layer depth of welding and ensure the welding quality, thereby avoiding the poor welding phenomenon such as virtual welding, false welding or explosive welding, and improving the connection strength of the pole body 2 and the pressing block 1.

[0041] For the convenience of description, in the axial direction of the pole body 2, the pole body 2 has a first side surface 21 and a third side surface, the first side surface 21 is arranged away from the pressing block 1, the pressing block 1 has a second side surface 12 and a fourth side surface, the second side surface 12 is arranged close to the first side surface 21.

[0042] It should be noted that the setting mode of the annular boss 3 is not limited, which can be selected according to the actual situation, for example, the annular boss 3 can be arranged on the pole body 2, and the annular boss 3 can also be arranged on the pressing block 1, which can be selected according to the actual layout.

[0043] In some embodiments, referring to Figure 3 , the annular boss 3 is arranged on the pole body 2, specifically, the annular boss 3 is arranged around the pole body 2, more specifically, the annular boss 3 can be integrally formed with the pole body 2, and the annular boss 3 can also be arranged separately from the pole body 2.

[0044] In some embodiments, the edge of the second side surface 12 of the pole body 2 is outwardly folded to form a first boss, which is used to abut against other components, at this time, in order to facilitate the clamping connection of the pole body 2 and the pressing block 1, the annular boss 3 is arranged separately from the pole body 2, the pole body 2 is clamped into the mounting hole 11 through one end where the first side surface 21 is located, when the pole body 2 and the pressing block 1 are installed, the annular boss 3 is clamped on the pole body 2, and then the pole body 2 and the pressing block 1 are welded and connected. By such arrangement, the structures do not interfere with each other, facilitating installation and welding.

[0045] In some other embodiments, no other structure is arranged on the pole body 2, the annular boss 3 is integrally formed with the pole body 2, and the pole body 2 can be installed according to the actual situation, that is, the pole body 2 can be installed into the mounting hole 11 of the pressing block 1 from one end where the first side surface 21 is located, or the pole body 2 can be installed into the mounting hole 11 of the pressing block 1 from one end where the second side surface 12 is located. By such arrangement, the installation steps are reduced, and the production efficiency is improved.

[0046] In some embodiments, referring to Figure 4 , the annular boss 3 is arranged on the pressing block 1, the annular boss 3 is arranged on the second side surface 12 of the pressing block 1, and the projection of the annular boss 3 in the axial direction of the pole body 2 coincides with the projection of the mounting hole 11 in the axial direction of the pole body 2. More specifically, in order to ensure the stability of the connection, the inner wall surface of the annular boss 3 is flush with the inner wall surface of the mounting hole 11 of the pressing block 1, so that the pole body 2 can be conveniently installed into the mounting hole 11 of the pressing block 1.

[0047] In some embodiments, in order to facilitate the installation and cooperation of the pole body 2 and the pressing block 1, the pole body 2 is often gap-fitted with the pressing block 1. The gap-fitting will cause a gap to be formed between the pole body 2 and the pressing block 1, and the gap will cause the welding to be poor during the welding process, thereby causing the problems of virtual welding, false welding or explosion welding. Therefore, in order to avoid the above problems, in the embodiment, a gap is formed between the pole body 2 and the hole wall of the mounting hole 11. During the welding connection of the pole body 2 and the pressing block 1, part of the annular boss 3 is melted due to the high temperature, and the melted part of the annular boss 3 is filled in the gap, so as to improve the stability of the welding connection of the pole body 2 and the pressing block 1.

[0048] It should be noted that the height of the pole body 2 and the pressing block 1 is designed according to different battery models and application scenarios. In some embodiments, the height of the pole body 2 is higher than the height of the pressing block 1. In some other embodiments, the height of the pressing block 1 is higher than the height of the pole body 2. It should be noted that the height of the annular boss 3 is related to the height of the pole body 2 and the height of the pressing block 1. The height of the annular boss 3 should not be too high or too low. When the height of the annular boss 3 is too high, the space occupied by the annular boss 3 increases, which will interfere with other components (such as a sealing element, etc.). When the height of the annular boss 3 is too low, the annular boss 3 that can be filled in the gap during the welding of the pole body 2 and the pressing block 1 is less, and the phenomenon of poor welding is prone to occur, thereby causing the poor connection stability of the pole body 2 and the pressing block 1.

[0049] In some embodiments, referring to Figure 2 , along the axial direction of the pole body 2, the vertical distance between the first side surface 21 and the second side surface 12 is L1, the height of the pressing block 1 is L2, and the height of the annular boss 3 is L3. When L1>L2, 0 When L3 is greater than 0.5L2, the height of the annular boss 3 is too high, and the space occupied increases. In the embodiment, the value range of L1 is 2-3.2mm. More specifically, L1 can be 2mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm, 3.1mm, 3.2mm or other data not listed. The value range of L2 is 2.5-3mm, and L2 can be 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, 3mm or other data not listed.

[0050] For example, in an embodiment, when the value of L1 is 2mm and the value of L2 is 3mm, at this time, L1 is less than L2, the value range of L3 is 0 < L3 < 0.5L1, and specifically, L3 can be 0.2mm, 0.4mm, 0.6mm, 0.8mm, or other data not listed. In another embodiment, when the value of L1 is 3mm and the value of L2 is 2.5mm, at this time, L1 is less than L2, the value range of L3 is 0 < L3 < 0.5L2, and specifically, L3 can be 0.25mm, 0.5mm, 0.75mm, 1mm, or other data not listed.

[0051] The cross-sectional shape of the annular boss 3 in the axial direction of the pole body 2 is not limited, and can be rectangular, square, trapezoidal, triangular, etc., which can be selected according to actual conditions. It should be noted that in the present embodiment, the main role of the annular boss 3 is to melt and connect the pressure block 1 and the pole body 2 when the pole body 2 and the pressure block 1 are welded. Considering the difficulty of welding, the cross-sectional shape of the annular boss 3 is preferably trapezoidal or triangular.

[0052] In some embodiments, referring to Figure 2 Taking the cross-sectional shape of the annular boss 3 as trapezoidal as an example, the pole body 2 has a first side surface 21 away from the pressure block 1, and the pressure block 1 has a second side surface 12 close to the first side surface 21. In the direction in which the first side surface 21 points to the second side surface 12, the outer diameter of the annular boss 3 is increased. In the welding process, the wider the width of the annular boss 3, the higher the required welding temperature and the longer the melting time. The operator often welds from top to bottom. The width of one end of the annular boss 3 close to the first side surface 21 is less than the width of the other end of the annular boss 3 close to the second side surface 12, so that the annular boss 3 can melt faster and fill the gap between the pole body 2 and the pressure block 1.

[0053] The forming method of the pole body 2 and the pressure block 1 is not limited, and in some embodiments, the pole body 2 and the pressure block 1 are integrally formed by cold heading, and in other embodiments, the pole body 2 and the pressure block 1 are integrally formed by casting.

[0054] It should be noted that the specific material of the pole body 2, the pressure block 1 and the annular boss 3 is not limited, and can be selected according to actual conditions. For example, the material of the pole body 2 can be aluminum, copper or aluminum-copper alloy. The material of the pressure block 1 can be aluminum, copper or aluminum-copper alloy. The material of the annular boss 3 can be aluminum, copper or aluminum-copper alloy.

[0055] It should be noted that the material of the pole body 2, the pressing block 1 and the annular boss 3 can be the same or different, which can be selected according to the actual situation. In the embodiment, the pole body 2 and the pressing block 1 are welded, and in order to reduce the difficulty of welding, the materials of the pole body 2, the pressing block 1 and the annular boss 3 are the same. Further, the material of the pole body 2 is copper, the material of the pressing block 1 is copper, and the material of the welding boss is also copper.

[0056] In some embodiments, referring to Figure 5 , the pole assembly 100 further comprises a temperature sensing device 4 for monitoring the temperature of the pole body 2. Specifically, when the pole assembly 100 is tested, the temperature sensing device 4 can monitor the temperature of the pole body 2, thereby providing temperature change data to provide theoretical support for simulating the temperature of the overcurrent pole. More specifically, the temperature sensing device 4 is arranged on the side of the pole body 2 facing the pressing block 1.

[0057] In some embodiments, referring to Figure 6 , the pole assembly 100 is used to be installed on the battery cell, and under normal circumstances, the side of the pole body 2 facing the pressing block 1 cooperates with the battery cell, therefore, in order to avoid interference between the temperature sensing device 4 and the battery cell, the side of the pole body 2 facing the pressing block 1 is provided with a receiving groove 22, the temperature sensing device 4 is arranged in the receiving groove 22, a through hole 23 is formed in the pole body 2, the through hole 23 communicates with the receiving groove 22, part of the temperature sensing device 4 passes through the through hole 23 and extends to the outside, for transmitting the temperature of the pole body 2.

[0058] Referring to Figure 7 , the temperature sensing device 4 comprises a mounting plate 41 and a temperature sensing wire 42, the temperature sensing wire 42 is mounted on the mounting plate 41, the mounting plate 41 is arranged in the receiving groove 22, and the mounting plate 41 is welded with the pole body 2, the temperature sensing wire 42 passes through the through hole 23. In actual work process, the mounting plate 41 is used to detect the temperature of the pole body 2, and transmit the temperature of the pole body 2 to the temperature sensing wire 42, and the temperature sensing wire 42 transmits the temperature to the outside, thereby providing theoretical support for simulating the temperature of the overcurrent pole.

[0059] In some embodiments, the mounting plate 41 is a copper plate or an aluminum plate.

[0060] In the second aspect, the utility model further provides a battery, the battery comprises the pole assembly 100. The specific structure of the pole assembly 100 is referred to the above-mentioned embodiments, since the battery adopts all the technical solutions of the above-mentioned embodiments, it at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0061] Further, the battery comprises a shell, a winding core and the pole assembly 100, the shell forms a cavity, the winding core is installed in the cavity, and the pole assembly 100 covers the winding core.

[0062] In a third aspect, the utility model also provides a battery pack, the battery pack includes a box and a plurality of above-mentioned batteries, a plurality of above-mentioned batteries are located on the box, and the specific structure of battery refers to the above-mentioned embodiment, because the utility model uses all the technical solutions of the above-mentioned embodiments, therefore at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0063] In a fourth aspect, the utility model also provides a power utilization equipment, which includes the above-mentioned battery pack. The specific structure of the battery pack refers to the above-mentioned embodiment. Because the power utilization equipment uses all the technical solutions of the above-mentioned embodiments, therefore at least has all the beneficial effects brought by the technical solutions of the above-mentioned embodiments, which will not be repeated here.

[0064] It can be understood that the power utilization equipment includes but is not limited to electric toys, electric tools, electric vehicles, cars, ships, spacecraft, etc. Among them, the electric toys can include fixed or mobile electric toys, such as game consoles, electric car toys, electric ship toys and electric plane toys, etc. The spacecraft can include airplanes, rockets, space shuttles and spaceships, etc. The car can be a fuel car, a gas car and a new energy car.

[0065] The above has carried out the detailed introduction to the utility model embodiment, the principle and implementation mode of the utility model have been described in this paper by applying specific examples, the above embodiment is only used to help understanding the method of the utility model and its core idea; at the same time, for the technical personnel in the art, according to the idea of the utility model, the specific implementation mode and application range will have the change, and the above, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. A pole assembly, characterized by The application relates to a pole block (1) provided with a mounting hole (11), a pole body (2) located in the mounting hole (11), and an annular boss (3) arranged at the joint of the pole block (1) and the pole body (2), wherein the pole block (1) and the pole body (2) are fixedly connected through the annular boss (3), and the annular boss (3) is used for fusing the pole block (1) and the pole body (2) when the pole body (2) and the pole block (1) are welded. A gap is formed between the pole body (2) and the hole wall of the mounting hole (11), and the annular boss (3) is at least partially located in the gap. The pole body (2) has a first side (21) away from the pole block (1), and the pole block (1) has a second side (12) close to the first side (21). The vertical distance from the first side (21) to the second side (12) along the axial direction of the pole body (2) is L1, the height of the pole block (1) is L2, and the height of the annular boss (3) is L3, wherein L1>L2 and 0 2. The pole assembly of claim 1, wherein, The pole body (2) has a first side (21) away from the pole block (1), and the pole block (1) has a second side (12) close to the first side (21).

3. The pole assembly of claim 1, wherein, The vertical distance from the first side (21) to the second side (12) along the axial direction of the pole body (2) is L1, the height of the pole block (1) is L2, and the height of the annular boss (3) is L3, wherein L1 The cross-sectional shape of the annular boss (3) along the axial direction of the pole body (2) is trapezoidal or triangular.

4. The pole assembly of claim 1, wherein, The pole body (2) has a first side (21) away from the pole block (1), and the pole block (1) has a second side (12) close to the first side (21). The annular boss (3) surrounds the pole body (2) and is integrally formed with the pole body (2); or 5. The pole assembly of claim 1, wherein, The pole body (2) has a first side (21) away from the pole block (1), and the pole block (1) has a second side (12) close to the first side (21).

6. The pole assembly of claim 5, wherein, A temperature sensing device (4) is arranged on the side of the pole body (2) facing the pole block (1), and the temperature sensing device (4) is configured to monitor the temperature of the pole body (2).

7. The pole assembly of claim 1 or 2, wherein, The pole body (2) is provided with a receiving groove (22) on the side facing the pole block (1), and a through hole (23) is formed in the pole body (2) and communicates with the receiving groove (22). ​ 8. The pole assembly of any one of claims 1-6, wherein, ​ 9. The pole assembly of claim 8, wherein, ​ The temperature sensing device (4) comprises a mounting plate (41) and a temperature sensing wire (42), the temperature sensing wire (42) is mounted on the mounting plate (41), the mounting plate (41) is arranged in the accommodating groove (22), and the temperature sensing wire (42) passes through the via hole (23).

10. A battery, characterized by The pole assembly (100) as claimed in any one of claims 1 to 9.

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