Battery structure and battery dismounting device

Abstract

The utility model relates to the technical field of batteries, and discloses a battery structure and a battery dismounting device, the battery structure comprises a battery main body and a circuit board assembly, the battery main body comprises a battery cell and a shell, and the battery cell is accommodated and limited in an accommodating cavity formed by the shell; the circuit board assembly comprises a circuit board and a temperature sensor arranged on the circuit board, the shell is provided with an installation wall facing the positive electrode or the negative electrode of the battery cell, the circuit board is arranged on the installation wall, and the temperature sensor is located on the side, facing the battery cell, of the circuit board. According to the technical scheme, the temperature sensor is arranged between the circuit board and the battery cell, and the temperature of the battery cell can be directly or indirectly detected by the temperature sensor. During installation, the columnar battery is inserted into the containing cavity of the battery installation structure in the length direction, and the temperature sensor does not protrude out of the side wall of the shell, so that the temperature sensor does not interfere with other installation structures, and the columnar battery provided with the temperature sensor is more convenient to disassemble and assemble.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery structure and a battery disassembly and assembly device. Background Art

[0002] When using cylindrical batteries, care must be taken to avoid overheating the battery. Overheating the battery will cause the battery performance (capacity and output power) to decline, shorten the battery life, and even cause accidents such as explosion or fire that threaten personal safety.

[0003] In order to prevent the battery temperature from being too high, people usually use temperature sensors to detect the temperature of cylindrical batteries. In related technologies, the temperature sensor is installed on the side wall of the battery and connected to the battery through a flexible circuit board. The cylindrical battery is usually disassembled and assembled by inserting or pulling out the battery body into the protective shell of the battery along the length direction of the cylindrical battery. In order to prevent the battery body from shaking and affecting the stability of the battery power supply, the gap between the inner wall of the protective shell and the cylindrical battery is relatively small when the battery is installed. The temperature sensor installed on the side wall of the cylindrical battery is easily stuck in the opening of the protective shell through which the battery body can pass, making the disassembly and assembly of the cylindrical battery very troublesome. Utility Model Content

[0004] The main purpose of the utility model is to provide a battery structure, aiming to make the disassembly and assembly of a columnar battery capable of being equipped with a temperature sensor more convenient.

[0005] To achieve the above-mentioned purpose, the battery structure proposed by the utility model includes:

[0006] A battery body, the battery body comprising a battery cell and a shell, the shell enclosing a cavity, the battery cell being accommodated and confined in the cavity; and

[0007] A circuit board assembly comprises a circuit board and a temperature sensor arranged on the circuit board, wherein the housing has a mounting wall facing the positive or negative pole of the battery cell, the circuit board is arranged on the mounting wall, and the temperature sensor is located on a side of the circuit board facing the battery cell.

[0008] Optionally, an accommodating space is formed between the mounting wall and the battery core, and the circuit board is accommodated and confined in the accommodating space.

[0009] Optionally, the battery cell includes a support ring, which is provided at one end of the battery cell facing the circuit board, the support ring is connected to the circuit board and encloses an installation cavity, and the temperature sensor is located in the installation cavity.

[0010] Optionally, the circuit board assembly further includes a conductive member, which is disposed on a side of the circuit board facing away from the battery cell, and the mounting wall is formed with an opening corresponding to the conductive member, and a partial structure of the conductive member is exposed in the opening.

[0011] Optionally, the temperature sensor is in contact with the positive electrode or the negative electrode of the battery cell.

[0012] Optionally, the circuit board assembly also includes a first electrode connecting wire and a second electrode connecting wire; the first electrode connecting wire is clamped between the circuit board and the battery cell and connected to the negative electrode; the second electrode connecting wire spans the surface of the battery cell and abuts against the inner wall of the cavity, and the second electrode connecting wire is used to connect the positive electrode and the circuit board.

[0013] The utility model also provides a battery disassembly and assembly device, the battery disassembly and assembly device comprising:

[0014] A disassembly and assembly component and any one of the above-mentioned battery structures, wherein the disassembly and assembly component comprises a protective shell, a battery cover and at least one conductive spring sheet, the protective shell is movably connected to the battery cover and encloses to form a accommodating cavity, the battery structure is accommodated and confined in the accommodating cavity, each of the conductive spring sheets is arranged at one end of the accommodating cavity away from the battery cover, and is electrically connected to the circuit board assembly respectively.

[0015] Optionally, the battery cover includes a rubber pad, which is arranged on a side of the battery cover facing the battery body and is used to press the battery structure so that each of the conductive springs abuts against the circuit board assembly.

[0016] Optionally, an annular convex portion is formed on the inner wall of the protective shell, and an annular groove is formed on the side wall of the rubber pad facing the annular convex portion, and the annular groove is snap-fitted with the annular convex portion.

[0017] Optionally, a convex column is formed on a side of the rubber pad facing the battery structure, and the convex column abuts against the second electrode connecting line.

[0018] In the technical solution of the utility model, the battery cell is arranged in a cavity formed by the battery shell, the circuit board is arranged on the side wall of the cavity facing the positive or negative electrode of the battery cell, the temperature sensor is arranged between the circuit board and the battery cell, and the temperature of the battery cell can be directly or indirectly detected by the temperature sensor. During installation, the cylindrical battery is inserted into the accommodating cavity of the battery mounting structure along the length direction. Since the temperature sensor does not protrude from the side wall of the shell, the temperature sensor will not interfere with other mounting structures, thereby making it more convenient to disassemble and assemble the cylindrical battery equipped with the temperature sensor. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0020] Figure 1 A three-dimensional structural schematic diagram of an embodiment of a battery structure provided by the utility model;

[0021] Figure 2 A schematic diagram of a planar structure of another embodiment of a battery structure;

[0022] Figure 3 for Figure 2 Cross-sectional view along AA direction;

[0023] Figure 4 for Figure 3 Schematic diagram of the structure of the middle shell;

[0024] Figure 5 for Figure 3 A partial enlarged view of point B in the middle;

[0025] Figure 6 for Figure 3 A partial enlarged view of point C in the middle;

[0026] Figure 7 A schematic diagram of the planar structure of an embodiment of the battery disassembly and assembly device provided by the utility model;

[0027] Figure 8 for Figure 7 Cross-sectional view along DD direction;

[0028] Fig. 9 for Figure 8 A partial enlarged view of point E in the middle;

[0029] Fig.10 for Figure 8 A partial enlarged view of point F in the middle.

[0030] Description of Figure Numbers:

[0031]

[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0034] It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0035] In addition, the descriptions of "first", "second", etc. in the present utility model are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme that satisfies both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present utility model.

[0036] Please refer to Figures 1 to 6 In order to solve the problem of difficulty in disassembling and assembling cylindrical batteries, the utility model proposes a battery structure 1000, including:

[0037] The battery body and circuit board assembly, the battery body includes a battery cell 11 and a shell 12, the shell 12 encloses a cavity 121, the battery cell 11 is accommodated and confined in the cavity 121, the circuit board assembly includes a circuit board 21 and a temperature sensor 22 arranged on the circuit board 21, the shell 12 has a mounting wall 1211 facing the positive electrode 111 or the negative electrode 112 of the battery cell 11, the circuit board 21 is arranged on the mounting wall 1211, and the temperature sensor 22 is located on the side of the circuit board 21 facing the battery cell 11.

[0038] In the technical solution of the utility model, the battery cell 11 is arranged in a cavity 121 enclosed by the battery shell 12, the circuit board 21 is arranged on the mounting wall 1211 of the shell 12 facing the positive electrode 111 or the negative electrode 112 of the battery cell 11, and the temperature sensor 22 is arranged between the circuit board 21 and the battery cell 11. The temperature of the battery cell 11 can be directly or indirectly detected by the temperature sensor 22. During installation, since the temperature sensor 22 does not protrude from the mounting wall 1211 of the shell 12, the temperature sensor 22 will not interfere with other mounting structures, thereby making it more convenient to disassemble and assemble the cylindrical battery equipped with the temperature sensor 22.

[0039] In one embodiment, an accommodation space is formed between the mounting wall 1211 and the battery cell 11, and the circuit board 21 is accommodated and limited in the accommodation space. The length of the housing 12 is greater than the length of the battery cell 11, so the cavity 121 has an accommodation space for accommodating the circuit board 21 and the temperature sensor 22 in addition to accommodating the battery cell 11. The circuit board 21 is limited in the accommodation space, which can prevent the circuit board 21 from moving in the accommodation space and driving the temperature sensor 22 to move, resulting in inaccurate temperature measurement.

[0040] In one embodiment, the battery cell 11 includes a support ring 113, which is disposed at one end of the battery cell 11 facing the circuit board 21. The support ring 113 is connected to the circuit board 21 and encloses a mounting cavity 1131, and the temperature sensor 22 is located in the mounting cavity 1131. When the cylindrical battery is disassembled, the circuit board 21 may be subjected to partial pressure. Since the temperature sensor 22 is disposed between the battery cell 11 and the circuit board 21, the circuit board 21 will be squeezed by the pressure on the temperature sensor 22. The support ring 113 is used to support the circuit board 21, so that the support ring 113 can support the circuit board 21 when the circuit board 21 is subjected to pressure, thereby reducing or even eliminating the pressure of the circuit board 21 squeezing the temperature sensor 22, and to a certain extent, the probability of damage to the temperature sensor 22 can be reduced.

[0041] In one embodiment, the circuit board assembly also includes a conductive member, which is disposed on the side of the circuit board 21 facing away from the battery cell 11, and the mounting wall 1211 is formed with an opening 122 corresponding to the conductive member, and part of the structure of the conductive member is exposed in the opening 122. Since the conductive contacts on the circuit board 21 are small in size, and usually need to be welded well in order for the cylindrical battery to output a stable current, the operation is troublesome. By using a conductive member to connect the conductive contacts on the circuit board 21, and connecting the external electrical components to the conductive member at the opening 122, a stable output current of the cylindrical battery can be achieved. Usually, the conductive member is connected to the conductive contacts on the circuit board 21 by welding. Of course, it is also a feasible solution to provide a conductive metal wire on the conductive member and hinge it with the contact.

[0042] It is understandable that the conductive member can be a conductive block or a plurality of concentric conductive rings 23 arranged at intervals. In one embodiment, the conductive member is four concentric conductive rings 23 arranged at intervals. Using four concentric conductive rings 23 arranged at intervals as the conductive member can provide a redundant conductive path. When one of the conductive rings 23 fails, the other conductive rings 23 can still transmit current or signals normally, thereby improving the power supply stability of the cylindrical battery and the current transmission efficiency of the cylindrical battery. At the same time, the four concentric conductive rings 33 can be set so that the external circuit and the battery cell 11 can still maintain an electrical connection through the four conductive rings 33 when the battery structure 1000 rotates, so that the battery cell 11 will not stop supplying power due to the influence of the rotation of the battery structure 1000. In one embodiment, the temperature sensor 22 is in contact with the negative electrode 112 of the battery cell 11, and the temperature sensor 22 is in direct contact with the battery cell 11, which can better sense the temperature of the battery cell 11, avoid the error caused by the heat transfer impedance of air or other media between the temperature sensor 22 and the battery cell 11, and make the temperature measurement result more accurate.

[0043] One electrode of the battery cell 11 close to the circuit board 21 may be a positive electrode 111 or a negative electrode 112, and in contrast, the other electrode of the battery cell 11 far from the circuit board 21 may be a negative electrode 112 or a positive electrode 111. In one embodiment, one electrode of the battery cell 11 close to the circuit board 21 is a negative electrode 112, and the other electrode is a positive electrode 111; the circuit board assembly further includes a first electrode connection line 24 and a second electrode connection line 25, the first electrode connection line 24 is sandwiched between the circuit board 21 and the battery cell 11, the second electrode connection line 25 is arranged across the surface of the battery cell 11, and abuts against the inner wall of the cavity 121, and the second electrode connection line 25 is used to connect the positive electrode 111 of the battery cell 11 and the circuit board 21. The first electrode connecting line 24 electrically connects the negative electrode 112 of the battery cell 11 to the circuit board 21, and the second electrode connecting line 25 electrically connects the positive electrode 111 of the battery cell 11 to the circuit board 21; the circuit board 21 is electrically connected to the external circuit, so that the external circuit can be electrically connected to the positive electrode 111 and the negative electrode 112 of the battery body, and the circuit board 21 is installed on the installation wall 1211. In this way, a side wall of the outer shell 12 is arranged to abut against the external circuit, so that the battery structure 1000 can be installed and matched with the external circuit, thereby facilitating the installation of the battery structure 1000.

[0044] Please refer to Figures 7 to 10 The utility model further proposes a battery disassembly and assembly device 2000, which is used to assemble a battery structure 1000. The specific structure of the battery structure 1000 refers to the above embodiment. Since the battery disassembly and assembly device 2000 adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.

[0045] The battery disassembly and assembly device 2000 includes a disassembly and assembly assembly, which includes a protective shell 31, a battery cover 32 and at least one conductive spring 33. The protective shell 31 is movably connected with the battery cover 32 and encloses to form a receiving cavity. The battery structure 1000 is received and limited in the receiving cavity. The conductive spring 33 is arranged at one end of the receiving cavity away from the battery cover 32 and is electrically connected to the circuit board assembly. In one embodiment, the disassembly and assembly assembly includes a protective shell 31, a battery cover 32 and six conductive springs 33. The protective shell 31 can reduce the probability of the cylindrical battery being damaged by external objects. The four conductive rings 23 are connected by six conductive springs 33, so that the connection between the conductive spring 33 and the conductive ring 23 is stable and not easy to fall off, thereby improving the stability of the cylindrical battery transmitting current outward. At the same time, the arrangement of the four concentric conductive rings 23 can keep the external circuit and the battery cell 11 electrically connected through the four conductive rings 23 when the battery structure 1000 rotates, so that the battery cell 11 will not stop supplying power due to the influence of the rotation of the battery structure 1000.

[0046] In one embodiment, the battery cover 32 includes a rubber pad 321, which is disposed on the side of the battery cover 32 facing the battery body and is used to squeeze the battery structure 1000 so that each conductive spring 33 abuts against the circuit board assembly. The conductive spring 33 is elastic; when installing the cylindrical battery, the battery cover 32 squeezes the rubber pad 321 and the battery structure 1000 to compress the conductive spring 33 to complete the installation; when removing the battery cover 32, the conductive spring 33 rebounds and can push part of the battery structure 1000 out of the accommodating cavity. The user can hold the part of the battery structure 1000 that is pushed out of the accommodating cavity to separate the battery structure 1000 from the protective shell 31, thereby completing the removal of the battery structure 1000. At the same time, the conductive ring 23 elastically abuts against the conductive spring 33, so that the conductive spring 33 has a certain rebound force on the conductive ring 23, so that the connection between the conductive spring 33 and the conductive ring 23 is more stable to ensure the electrical connection between the conductive ring 23 and the cylindrical battery, and the cylindrical battery can transmit current outward more stably. Of course, in another embodiment, the rubber pad 321 can be replaced by a spring to achieve the same technical effect.

[0047] In one embodiment, an annular protrusion 311 is formed on the inner wall of the protective shell 31, and an annular groove 3211 is formed on the side wall of the rubber pad 321 facing the annular protrusion 311. The annular groove 3211 is snap-fitted with the annular protrusion 311. The rubber pad 321 is elastic. When the battery cover 32 is pushed to squeeze the battery structure 1000 and move toward the inside of the protective shell 31, the conductive spring sheet 33 is squeezed by the battery structure 1000 and generates a rebound force on the battery structure 1000. The annular groove 3211 on the rubber pad 321 moves to the annular protrusion 311 on the protective shell 31. The annular groove 3211 is snap-fitted with the annular protrusion 311 so that the rubber pad 321 generates a reaction force on the battery structure 1000. The reaction force generated by the rubber pad 321 on the battery structure 1000 offsets the rebound force of the conductive spring sheet 33 on the battery structure 1000, so that the battery structure 1000 is stably accommodated and confined in the accommodating cavity 311.

[0048] In one embodiment, a convex column 3212 is formed on the side of the rubber pad 321 facing the battery structure 1000, and the convex column 3212 abuts against the second electrode connection line 25. When the battery cover 32 is pushed to squeeze the battery structure 1000, the convex column 3212 on the rubber pad 321 squeezes the second electrode connection line 25 and abuts against the positive electrode 111 of the battery cell 11, so that the electrical connection between the positive electrode 111 of the battery cell 11 and the circuit board 21 can be stable. The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the inventive concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.

Claims

1. A battery structure (1000), characterized in that: include: A battery main body, the battery main body comprising a battery cell (11) and a shell (12), the shell (12) enclosing to form a cavity (121), the battery cell (11) being accommodated and confined in the cavity (121); and A circuit board assembly comprises a circuit board (21) and a temperature sensor (22) arranged on the circuit board (21); the housing (12) has a mounting wall (1211) facing the positive electrode (111) or the negative electrode (112) of the battery cell (11); the circuit board (21) is arranged on the mounting wall (1211); and the temperature sensor (22) is located on a side of the circuit board (21) facing the battery cell (11).

2. The battery structure (1000) according to claim 1, characterized in that: An accommodating space is formed between the installation wall (1211) and the battery core (11), and the circuit board (21) is accommodated and confined in the accommodating space.

3. The battery structure (1000) according to claim 2, characterized in that: The battery cell (11) comprises a support ring (113), wherein the support ring (113) is arranged at one end of the battery cell (11) facing the circuit board (21), and the support ring (113) is connected to the circuit board (21) and encloses a mounting cavity (1131), wherein the temperature sensor (22) is located in the mounting cavity (1131).

4. The battery structure (1000) according to claim 2, characterized in that: The circuit board assembly also includes a conductive member, which is arranged on a side of the circuit board (21) facing away from the battery cell (11), and the mounting wall (1211) is formed with an opening (122) arranged corresponding to the conductive member, and a partial structure of the conductive member is exposed in the opening (122).

5. The battery structure (1000) according to any one of claims 1 to 4, characterized in that: The temperature sensor (22) abuts against the positive electrode (111) or the negative electrode (112) of the battery cell (11).

6. The battery structure (1000) according to claim 5, characterized in that: The circuit board assembly further comprises a first electrode connecting line (24) and a second electrode connecting line (25); The first electrode connecting wire (24) is sandwiched between the circuit board (21) and the battery cell (11) and connected to the negative electrode (112); The second electrode connection line (25) is arranged across the surface of the battery core (11) and abuts against the inner wall of the cavity (121). The second electrode connection line (25) is used to connect the positive electrode (111) and the circuit board (21).

7. A battery disassembly and assembly device (2000), characterized in that: The battery disassembly and assembly device (2000) comprises a disassembly and assembly component and a battery structure (1000) as claimed in claim 6, wherein the disassembly and assembly component comprises a protective shell (31), a battery cover (32) and at least one conductive spring sheet (33), wherein the protective shell (31) and the battery cover (32) are movably connected and enclosed to form a receiving cavity, wherein the battery structure (1000) is received and confined in the receiving cavity, and each of the conductive spring sheets (33) is arranged at one end of the receiving cavity away from the battery cover (32), and is electrically connected to the circuit board assembly respectively.

8. The battery disassembly and assembly device according to claim 7, characterized in that: The battery cover (32) comprises a rubber pad (321), which is arranged on a side of the battery cover (32) facing the battery body and is used to press the battery structure (1000) so that each conductive spring sheet (33) abuts against the circuit board assembly.

9. The battery disassembly and assembly device according to claim 8, characterized in that: An annular convex portion (311) is formed on the inner wall of the protective shell (31), and an annular groove (3211) is formed on the side wall of the rubber pad (321) facing the annular convex portion (311), and the annular groove (3211) is snap-fitted with the annular convex portion (311).

10. The battery disassembly and assembly device according to claim 8, characterized in that: A convex column (3212) is formed on the side of the rubber pad (321) facing the battery structure (1000), and the convex column (3212) abuts against the second electrode connecting line (25).

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