Upper and lower joint structure of battery core

Abstract

The utility model discloses an upper and lower joint structure of a battery core, relates to the technical field of battery core joints, and provides the following scheme aiming at the problems that magnetic interference is caused by improper material selection, the connection precision is influenced by insufficient coaxiality of inner and outer diameters, and the corrosion resistance of the joint is poor due to unreasonable coating treatment in the prior art: the upper and lower joint structure of the battery core comprises an upper joint of the battery core, the coaxiality of the inner diameter and the outer diameter of the battery core upper joint is smaller than 0.08, a first positioning hole is formed in the other end of the battery core upper joint, and the first positioning hole is perpendicular to the first cylindrical pin hole; the coaxiality of the inner diameter and the outer diameter of the battery core upper connector and the coaxiality of the outer diameter of the battery core lower connector are also smaller than 0.08. According to the non-magnetic battery module, the battery core upper connector and the battery core lower connector are made of non-magnetic materials, so that the influence of magnetic interference on the performance of the battery module is effectively avoided; the coaxiality of the inner diameter and the outer diameter of the upper battery core connector and the inner diameter and the outer diameter of the lower battery core connector is strictly controlled to be smaller than 0.08, and performance loss caused by insufficient coaxiality is reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery core joint technical field especially relates to a battery core upper and lower joint structure. BACKGROUND

[0002] With the continuous development of electronic equipment, the performance stability and safety of battery module as the important component of electronic equipment are paid more and more attention by people, and the structure design of battery core joint as the key part connecting battery core in battery module has important influence on the overall performance of battery module.

[0003] Traditional battery core joint structure often has some deficiencies, for example, improper material selection leads to magnetic interference, insufficient coaxiality of inner and outer diameters affects connection precision, unreasonable coating treatment leads to poor corrosion resistance of joint, etc., which may affect the performance stability of battery module and the safety of electronic equipment. UTILITY MODEL CONTENT

[0004] The utility model provides a battery core upper and lower joint structure solves the prior art problems.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme: a battery core upper and lower joint structure, comprising:

[0006] The battery core upper joint is in circular column structure, the coaxiality of the inner and outer diameters of the battery core upper joint is less than 0.08, a plurality of first cylindrical pin holes are arranged at one end of the battery core upper joint, a first positioning hole is arranged at the other end of the battery core upper joint, the first positioning hole is perpendicular to the first cylindrical pin hole, and the battery core upper joint is made of non-magnetic material.

[0007] The battery core lower joint is also less than 0.08 in the coaxiality of the inner and outer diameters, a plurality of second cylindrical pin holes are arranged at the outer periphery of one end of the battery core lower joint, two second positioning holes are arranged at the end of the battery core lower joint away from the second cylindrical pin hole, and the battery core lower joint is also made of non-magnetic material with the battery core upper joint.

[0008] The battery core upper joint and the battery core lower joint are respectively installed at the upper and lower ends of the battery core.

[0009] Preferably, a through circular hole is arranged in the battery core upper joint, a first thread is arranged at the outer periphery of one end of the battery core upper joint, and first cylindrical pin holes are arranged at the outer periphery of the end of the battery core upper joint close to the first thread at equal intervals.

[0010] Preferably, a through hole is arranged in the center of the inside of the battery core lower connector, a second thread is arranged at one end of the battery core lower connector, a second cylindrical pin hole is arranged at the outer periphery of the end of the battery core lower connector close to the second thread, and a second positioning hole is symmetrically arranged on the end of the battery core lower connector away from the second cylindrical pin hole.

[0011] Preferably, the surfaces of the battery core upper connector and the battery core lower connector are subjected to hard anodic oxidation treatment, and the outer surface of the battery core upper connector and the battery core lower connector is coated with a dark green layer.

[0012] Preferably, during the coating process of the battery core upper connector and the battery core lower connector, the first thread and the second thread in the battery core upper connector and the battery core lower connector are not coated.

[0013] Preferably, the machining precision of the battery core upper connector and the battery core lower connector meets the IT12 level standard.

[0014] The battery core upper connector and the battery core lower connector are made of non-magnetic material, which effectively avoids the influence of magnetic interference on the performance of the battery module and ensures the stable operation of the battery module in the electronic equipment. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a schematic view of the battery core upper connector of the utility model.

[0016] Figure 2 It is a side view of the battery core upper connector of the utility model.

[0017] Figure 3 It is a sectional view of the battery core upper connector of the utility model.

[0018] Figure 4 It is a schematic view of the battery core lower connector of the utility model.

[0019] Figure 5 It is a side view of the battery core lower connector of the utility model.

[0020] Figure 6 It is a sectional view of the battery core lower connector of the utility model.

[0021] The figure label: 1, the battery core upper joint; 101, first cylindrical pin hole; 102, first positioning hole; 103, first thread; 2, the battery core lower joint; 201, second cylindrical pin hole; 202, second positioning hole; 203, second thread. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0023] Referring to Figures 1-6 A battery core upper and lower joint structure, comprising a battery core upper joint 1, the battery core upper joint 1 and the battery core lower joint 2 are respectively installed at the upper and lower ends of the battery core (not shown in the figure), the battery core upper joint 1 is in the form of a circular cylinder structure, the coaxiality of the inner and outer diameters of the battery core upper joint 1 is less than 0.08, a plurality of first cylindrical pin holes 101 are formed at one end of the battery core upper joint 1, a first positioning hole 102 is formed at the other end of the battery core upper joint 1, the first positioning hole 102 is perpendicular to the first cylindrical pin hole 101, and the battery core upper joint 1 is made of non-magnetic material; the battery core lower joint 2, the coaxiality of the inner and outer diameters of the battery core lower joint 2 is also less than 0.08, a plurality of second cylindrical pin holes 201 are formed at the outer periphery of one end of the battery core lower joint 2, two second positioning holes 202 are formed at the end of the battery core lower joint 2 away from the second cylindrical pin holes 201, and the battery core lower joint 2 and the battery core upper joint 1 are also made of non-magnetic material.

[0024] Referring to Figure 3 , Figure 6, the through hole is arranged in the inside of the battery core upper connector 1, a first thread 103 is arranged on the outer periphery of one end of the battery core upper connector 1, and a first cylindrical pin hole 101 is arranged on the outer periphery of the end of the battery core upper connector 1 close to the first thread 103 at equal intervals, a through hole is arranged in the inside of the center of the battery core lower connector 2, a second thread 203 is arranged on one end of the battery core lower connector 2, a second cylindrical pin hole 201 is arranged on the outer periphery of the end of the battery core lower connector 2 close to the second thread 203, a second positioning hole 202 is symmetrically arranged on the upper and lower ends of the end of the battery core lower connector 2 away from the second cylindrical pin hole 201, the second positioning hole 202 and the second cylindrical pin hole 201 are arranged perpendicularly to each other, the surfaces of the battery core upper connector 1 and the battery core lower connector 2 are subjected to hard anodic oxidation treatment, and the outer surface of the battery core upper connector 1 and the battery core lower connector 2 is coated with a dark green layer to protect the connectors from corrosion and wear, during the coating process of the battery core upper connector 1 and the battery core lower connector 2, the first thread 103 and the second thread 203 in the battery core upper connector 1 and the battery core lower connector 2 are not coated to ensure the reliability and sealing performance of the threaded connection, the machining precision of the battery core upper connector 1 and the battery core lower connector 2 meets the IT12 level standard, the first positioning hole 102 and the second positioning hole 202 of the battery core upper connector 1 and the battery core lower connector 2 are M278.5 through holes processed by a numerical control machine tool to ensure the coaxiality and position accuracy, and the first cylindrical pin hole 101 and the second cylindrical pin hole 201 are connected with the cooperating parts to enhance the stability of the connection.

[0025] Working principle: first, the battery core upper connector 1 and the battery core lower connector 2 are respectively installed on the two ends of the battery core, the first positioning hole 102 and the second positioning hole 202 on the battery core upper connector 1 and the battery core lower connector 2 are inserted into the first cylindrical pin hole 101 and the second cylindrical pin hole 201 by using a cylindrical pin to tightly connect the two to ensure the connection precision and stability between the battery cores, the battery core upper connector 1 and the battery core lower connector 2 are made of non-magnetic materials to effectively avoid the influence of magnetic interference on the performance of the battery module, and the coaxiality of the inner and outer diameters of the two connectors is strictly controlled within a range of less than 0.08 to improve the connection precision between the battery cores, and the surface of the battery core upper connector 1 and the battery core lower connector 2 is subjected to dark green hard anodic oxidation treatment to enhance the corrosion resistance of the connectors.

[0026] The above is only a preferred specific embodiment of the present application, but the protection scope of the present application is not limited to this, any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A battery cell up-down joint structure, characterized in that, The application relates to a battery core upper joint (1) which is in a circular column structure, the inner-outer diameter coaxiality of the battery core upper joint (1) is less than 0.08, a plurality of first cylindrical pin holes (101) are arranged at one end of the battery core upper joint (1), a first positioning hole (102) is arranged at the other end of the battery core upper joint (1), the first positioning hole (102) is perpendicular to the first cylindrical pin hole (101), and the battery core upper joint (1) is made of non-magnetic material. The application also relates to a battery core lower joint (2) which has the same inner-outer diameter coaxiality as the battery core upper joint (1), a plurality of second cylindrical pin holes (201) are arranged at the outer periphery of one end of the battery core lower joint (2), two second positioning holes (202) are arranged at the end of the battery core lower joint (2) which is far away from the second cylindrical pin holes (201), and the battery core lower joint (2) is also made of non-magnetic material. The battery core upper joint (1) and the battery core lower joint (2) are respectively arranged at the upper and lower ends of a battery core. The battery core upper joint (1) is internally provided with a through hole, the outer periphery of one end of the battery core upper joint (1) is provided with a first thread (103), and the outer periphery of the end of the battery core upper joint (1) which is close to the first thread (103) is provided with the first cylindrical pin holes (101) at equal intervals.

2. The cell top and bottom joint structure of claim 1, wherein, The battery core lower joint (2) is internally provided with a through hole at the center, one end of the battery core lower joint (2) is provided with a second thread (203), the outer periphery of the end of the battery core lower joint (2) which is close to the second thread (203) is provided with the second cylindrical pin holes (201), the end of the battery core lower joint (2) which is far away from the second cylindrical pin holes (201) is symmetrically provided with the second positioning holes (202) in the up-down direction, and the second positioning holes (202) and the second cylindrical pin holes (201) are arranged in perpendicular relation.

3. The battery cell top and bottom joint structure of claim 1, wherein, The surfaces of the battery core upper joint (1) and the battery core lower joint (2) are subjected to hard anodic oxidation treatment, and the outer surface coating layers of the battery core upper joint (1) and the battery core lower joint (2) are ink green.

4. The battery cell top and bottom joint structure of claim 1, wherein, During the coating treatment of the battery core upper joint (1) and the battery core lower joint (2), the first thread (103) and the second thread (203) of the battery core upper joint (1) and the battery core lower joint (2) are not coated.

5. The battery cell top and bottom junction structure of claim 1, wherein, The machining precision of the battery core upper joint (1) and the battery core lower joint (2) meets the IT12 level standard.

6. The battery cell top and bottom junction structure of claim 1, wherein, ​

Images