Polar column of storage battery and storage battery thereof
By improving the multi-faceted contact design of the battery's bias post and busbar, and the structure of the reinforcing section, the problem of excessively high temperature of the bias post under high current was solved, achieving higher current carrying capacity and battery stability.
Patent Information
- Application Number
- CN202520235593.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-12-30
- Estimated Expiration
- 2035-02-14
AI Technical Summary
The current battery's bias-pole design causes excessively high temperatures under high current, affecting battery life.
The design employs a multi-faceted contact offset post to increase the contact area between the offset post and the busbar, and improves connection reliability and reduces resistance through reinforcement.
It effectively reduces heat generation, improves high current carrying capacity and battery connection reliability, and enhances battery energy density.
Smart Images
Figure CN223743846U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the field of storage battery, more specifically, it relates to a polar post of storage battery and the storage battery thereof. BACKGROUND
[0002] The main standards for evaluating the performance of storage battery include the passing capacity of large current and the continuous discharge time. The polar post of high-power storage battery for energy storage on the market is generally designed in L shape, two L-shaped polar posts are welded into a whole by using welding through-wall welding, and the polar post is placed on the busbar.
[0003] The main defect of the prior art is that the L-shaped polar post will cause the temperature at the corner position to be too high when a large current passes through, resulting in reduced battery life.
[0004] Based on this, the present application aims to improve. SUMMARY
[0005] The utility model overcomes the deficiency that the polar post in the prior art lead storage battery adopts L type, causes the temperature at the corner of L shape to be too high, and is difficult to be applied to the large current storage battery, provides a polar post of storage battery and the storage battery thereof, it adopts the mode of multi-surface contact to expand the contact area between the polar post and the busbar, thereby supporting the realization of large current storage battery.
[0006] To solve the above technical problems, the utility model adopts the following technical scheme:
[0007] A polar post of storage battery, the polar post and the busbar are fixedly connected, including polar post body, connecting part and reinforcing part, the first side wall of the busbar is attached to the polar post body, the connecting part extending from the busbar is arranged on the polar post body, the second side wall of the busbar is attached to the connecting part, the first side wall and the second side wall are arranged adjacent to each other, along the normal direction of the bottom surface of the polar post body, the reinforcing part is connected to the connecting part, and the second side wall is attached to the reinforcing part.
[0008] The polar post is connected with the busbar, and the polar post is a good conductor of current. The busbar and the polar post are in electrical communication. The existing polar post adopts an L-shaped structure, and the resistance at the corner is large, which causes more heat to be generated at this position, thereby making it difficult to be applied to a large current storage battery. The present application improves this. The polar post is arranged to be attached to the first side wall and the second side wall of the busbar, thereby expanding the contact area and reducing the resistance, thereby reducing the generated heat, and thereby being suitable for a large current passing through scenario.
[0009] On this basis, a reinforcing part is further arranged to improve the strength of the connecting part. The contact surface of the busbar and the polar column not only bears the function of transmitting current but also plays a role of consolidation. When the polar column is stressed, the connecting part of the busbar and the polar column may be separated, causing virtual connection and leading to an increase in resistance. Therefore, the reinforcing part is arranged to improve the connection reliability of the polar column and the busbar.
[0010] Preferably, the connecting part is provided with a slope, through which the height of the connecting part gradually decreases in the direction from the polar column body to the busbar. The slope is arranged to reduce the use of materials and lower the cost. Through reasoning and simulation, the part other than the slope of the connecting part hardly participates in the transmission of electric charge, so that this part is removed to save the corresponding materials without reducing the transmission current capacity.
[0011] Preferably, the polar column body is provided with a welding hole penetrating through the bottom surface and the top surface, and the welding hole is a long circular hole. Only the polar column is fixed through the welding hole.
[0012] Preferably, the reinforcing part is provided with a draft angle, which is beneficial to production.
[0013] Preferably, the polar column body, the connecting part and the reinforcing part are integrated.
[0014] A storage battery comprises two parallel arranged busbars, a plurality of battery groove spacing ribs and a plurality of polar columns of the storage battery, the battery groove spacing ribs are arranged at equal intervals along the length direction of the busbar, the two sides of the battery groove spacing rib are respectively attached with the polar column, the reinforcing parts of the polar columns are arranged oppositely, and the polar columns arranged on adjacent battery groove spacing ribs are arranged at different sides in the length direction of the battery groove spacing rib.
[0015] The polar columns are arranged in pairs, the polar columns in the same group are attached with the battery groove spacing rib and are fixed by welding through the welding hole. The structure that the reinforcing parts are arranged oppositely makes the polar columns in a group in a triangular shape and have better stability. The structure that the reinforcing parts are arranged at different sides makes the reinforcing parts be able to fully use the space between the two battery groove spacing ribs.
[0016] Preferably, the polar column body is arranged between the two busbars. The structure reduces the occupation of the top space of the storage battery, thereby improving the energy density of the storage battery.
[0017] Preferably, the polar column is fixedly connected with one busbar, and a gap is arranged between the polar column and the other busbar.
[0018] Compared with the prior art, the utility model has the advantages that:
[0019] (1) The polar column is attached with the busbar through two surfaces, the flow area is enlarged, and the polar column can bear the passing of large current;
[0020] (2) The reinforcing part is arranged and the two polar columns are separated from the battery groove by the partitioning rib, so that the two reinforcing parts arranged oppositely form a stable triangle, and the connecting reliability between the polar column and the busbar is improved. BRIEF DESCRIPTION OF DRAWINGS
[0021] Figure 1 is a partial exploded schematic view of the polar column and the busbar of the utility model;
[0022] Figure 2 is a schematic view of the storage battery of the utility model;
[0023] Figure 3 is a top view of the storage battery of the utility model;
[0024] In the drawings:
[0025] The busbar 1, the polar column body 2, the connecting part 3, the reinforcing part 4, the first side wall 5, the second side wall 6, the slope 7, the welding hole 8, the battery groove partitioning rib 9. DETAILED DESCRIPTION
[0026] The present disclosure will be further described below in conjunction with the drawings and embodiments.
[0027] It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the present application. Unless otherwise indicated, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application pertains.
[0028] It should be noted that the terms used herein are only for the purpose of describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, they indicate the presence of a feature, step, operation, device, component, and / or combination thereof.
[0029] In the present disclosure, the terms such as "upper", "lower", "left", "right", "front", "back", "vertical", "horizontal", "side", "bottom", etc. indicate the orientation or positional relationship shown in the drawings, which is only a relationship word determined for the convenience of describing the structural relationship of the components or elements of the present disclosure, and does not specifically refer to any component or element in the present disclosure, and cannot be understood as a limitation of the present disclosure.
[0030] In this disclosure, terms such as "fixed connection," "connected," and "linked" should be interpreted broadly, indicating a fixed connection, an integral connection, or a detachable connection; a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can determine the specific meaning of these terms in this disclosure based on the specific circumstances, and they should not be construed as limitations on this disclosure.
[0031] Example:
[0032] A type of battery bias post, reference Figure 1 As shown, the bias pole and busbar 1 are fixedly connected, including bias pole body 2, connecting part 3 and reinforcing part 4. The bias pole body 2, connecting part 3 and reinforcing part 4 are an integral structure.
[0033] The polarizer body 2 is attached to the first sidewall 5 of the busbar 1. The polarizer body 2 has a connecting portion 3 extending into the busbar 1, which is attached to the second sidewall 6 of the busbar 1. The first sidewall 5 and the second sidewall 6 are adjacent to each other. The polarizer body 2 has a welding hole 8 penetrating the bottom and top surfaces; the welding hole 8 is an elongated hole. The polarizer is fixed only through this welding hole 8. The connecting portion 3 has a ramp 7. Along the direction from the polarizer body 2 to the busbar 1, the height of the connecting portion 3 gradually decreases due to the ramp 7. The ramp 7 is provided to reduce material usage and lower costs. Through reasoning and simulation, the portion of the connecting portion 3 outside the ramp 7 hardly participates in charge transfer; therefore, removing this portion saves material without reducing the current transmission capacity.
[0034] Along the normal direction of the bottom surface of the offset column body 2, a reinforcing part 4 is connected to the connecting part 3, and the reinforcing part 4 fits into the second side wall 6. The reinforcing part 4 is provided with a draft angle, which facilitates production.
[0035] The bias terminal is connected to the busbar and is a good conductor of current. Busbar 1 and the bias terminal are electrically connected. Existing bias terminals use an L-shaped structure, which results in higher resistance at the corners, leading to more heat generation at those locations and making them unsuitable for high-current batteries. This application improves upon this by designing the bias terminal to fit snugly against the first sidewall 5 and the second sidewall 6 of busbar 1. This increases the contact area, reduces the resistance, and consequently reduces heat generation, making it suitable for high-current applications.
[0036] Based on this, a reinforcing part 4 is also provided to improve the strength of the connection part 3. The contact surface between the busbar 1 and the eccentric post not only carries current but also acts as a bonding agent. When the eccentric post is subjected to force, the connection between the busbar 1 and the eccentric post may detach, causing a loose connection and increasing the resistance. Therefore, the reinforcing part 4 is provided to improve the reliability of the connection between the eccentric post and the busbar 1.
[0037] Referring to FIG. 1, a battery includes two parallel busbars 1, a plurality of cell groove separators 9, and a plurality of battery polar columns. Figure 2 , 3 As shown in FIG. 1, a battery includes two parallel busbars 1, a plurality of cell groove separators 9, and a plurality of battery polar columns. The cell groove separators 9 are arranged at equal intervals along the length direction of the busbars 1. The two sides of the cell groove separators 9 are respectively attached with the polar columns. The reinforcing portions 4 of the polar columns are arranged oppositely. The polar columns installed on adjacent cell groove separators 9 are arranged at different sides in the length direction of the cell groove separators 9. The polar column bodies 2 are arranged between the two busbars 1. This structure reduces the occupation of the top space of the battery, thereby improving the energy density of the battery. The polar column is fixedly connected with one busbar 1, and a gap is arranged between the polar column and the other busbar 1.
[0038] The polar columns are arranged in pairs. The polar columns in the same group are attached with the cell groove separators 9 and are fixed by welding through the welding holes 8. The oppositely arranged reinforcing portions 4 make the polar columns in one group have a triangular shape, thereby having better stability. The different side arrangement structure makes the reinforcing portions 4 be able to fully use the space between the two cell groove separators 9.
[0039] The above-mentioned embodiments are only the preferred schemes of the present application, and do not limit the present application in any form. Other variants and modifications can be made without departing from the technical scheme recited in the claims.
Claims
1. A polar post of a storage battery, the polar post and a busbar being fixedly connected, characterized in that, The polar post body is attached to the first side wall of the busbar, the connecting part extends out of the busbar, the connecting part is attached to the second side wall of the busbar, the first side wall is arranged adjacent to the second side wall, the reinforcing part is connected to the connecting part along the normal direction of the bottom surface of the polar post body, and the reinforcing part is attached to the second side wall.
2. A battery offset post according to claim 1, wherein, The connecting part is provided with a slope, and the height of the connecting part gradually decreases along the direction from the polar post body to the busbar through the slope.
3. The offset post for a battery cell defined in claim 1, wherein The polar post body is provided with a welding hole penetrating through the bottom surface and the top surface, and the welding hole is a long circular hole.
4. The offset post for a battery cell defined in claim 1, wherein The reinforcing part is provided with a draft angle.
5. A battery's offset post according to any one of claims 1 to 4, characterized in that, The polar post body, the connecting part and the reinforcing part are in an integrated structure.
6. A battery characterized by The battery has two parallel busbars, a plurality of battery groove separation ribs and a plurality of polar posts as claimed in claim 5, the battery groove separation ribs are arranged at equal intervals along the length direction of the busbar, the two sides of the battery groove separation rib are respectively attached with the polar post, the reinforcing parts of the polar posts are arranged opposite to each other, and the polar posts arranged on the adjacent battery groove separation ribs are arranged on the opposite sides of the length direction of the battery groove separation rib.
7. A battery as claimed in claim 6, characterised in that The polar post body is arranged between the two busbars.
8. A battery as in claim 6 wherein, The polar post is fixedly connected with one busbar, and a gap is arranged between the polar post and the other busbar.