Battery structure and battery pack

Abstract

To provide a battery structure in which risk of production quality of a battery is reduced.SOLUTION: A battery structure and a battery pack are disclosed. The battery structure includes a first case 1 and a battery mounted in the first case, and a second case 2 and a capacitor mounted in the second case, a positive electrode end of the battery is provided with a first positive electrode output component, a cover plate of the battery is a negative electrode end of the battery, a positive electrode end of the capacitor is provided with a second positive electrode output component, and a negative electrode end of the capacitor is provided with a negative electrode output component.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] This application claims priority from a Chinese patent application bearing application number 202421642041.6, filed with the China Patent Office on July 11, 2024, the entire contents of which are incorporated herein by reference.

[0002] This application relates to the technical field of batteries, and more particularly to battery structures and battery packs. [Background technology]

[0003] Lithium thionyl chloride batteries are widely used in smart card meters, computer support power supplies, medical instruments, wireless communications, oil drilling, portable communication devices, scientific research equipment, remote control data acquisition systems, military applications and other powered equipment, etc., and some application fields, such as smart card meters, military applications, etc., require the use of power-type lithium thionyl chloride batteries.

[0004] However, power batteries have voltage delay and safety risks that affect their use, so currently, a combined power source of a capacity battery and capacitor is proposed. The manufacturing method in the related art is to first make a conventional lithium-thionyl chloride battery, then separately make a supercapacitor that can provide large current pulses, with the outer shell as the positive electrode and the center of the bottom as the negative electrode. The battery and the supercapacitor are connected by connecting leads, and the connection points are filled with resin adhesive to form a single integrated battery, thereby solving the large pulse current capability and eliminating the voltage delay of the battery. Summary of the Invention [Problem to be solved by the invention]

[0005] The combined battery embodiment described in the background art only alleviates the shortcomings of the battery's discharge performance, but the actual assembly process is complicated, a potting process is used in the production process, which takes too long, and any inconvenience in the process of bonding with adhesive or welding is likely to cause risks to the production quality of the battery. [Means for solving the problem]

[0006] In a first aspect, the present application provides: a first case, a battery mounted in the first case, a second case, and a capacitor mounted in the second case; The battery has a first positive output member at a positive terminal, and the cover plate is the negative terminal of the battery, a second positive output member is provided at the positive electrode end of the capacitor, and a negative output member is provided at the negative electrode end of the capacitor; The battery structure includes the first case and the second case attached and combined together, the first positive output member and the second positive output member electrically connected, and the cover plate and the negative output member electrically connected.

[0007] In a second aspect, the present application provides a battery pack including the above-described battery structure. [Effects of the Invention]

[0008] The present application does not require the use of the potting sealing process used in the prior art for manufacturing, but specifically employs a two-case mounting process for manufacturing. The newly designed mounting process simplifies the assembly process and avoids the need for complex production processes such as potting sealing during production, effectively avoiding quality and safety issues that are likely to occur during production. At the same time, the new design reduces the production and assembly costs of the battery, improves the efficiency of the entire production process, and increases the overall economic benefits.

[0009] More importantly, during the specific production and manufacturing process, the dimensions of this battery structure can be specifically designed, and the designed specific dimensions can be matched to the dimensions of the battery chamber used in the existing application, eliminating the need to create a new mold. At the same time, the assembly process is simple, and it can be used in conjunction with the battery chamber of the existing application device, and can accommodate multiple series or parallel connections between batteries, making the overall combination more aesthetically pleasing and safer. [Brief explanation of the drawings]

[0010] [Figure 1] 1 is a structural schematic diagram of a battery structure according to an embodiment of the present invention; [Figure 2] FIG. 2 is a schematic diagram of an exploded state of a battery structure according to an embodiment of the present invention. [Figure 3] 1 is a schematic diagram of the internal structure of a battery structure according to an embodiment of the present invention. [Figure 4] FIG. 2 is a schematic diagram of another internal structure of a battery structure according to an embodiment of the present application. [Figure 5] FIG. 10 is a schematic diagram of yet another internal structure of the battery structure of the embodiment of the present application. [Figure 6] 1 is a structural schematic diagram of an insulating member in a battery structure according to an embodiment of the present invention. [Figure 7] 3 is a schematic diagram of a further internal structure of a battery structure according to an embodiment of the present application. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0011] In addition, in the description of this application, the orientations or positional relationships indicated by terms such as "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inside," and "outside" are based on the orientations or positional relationships shown in the drawings, and are intended merely to facilitate the description of this application and simplify operation. They do not indicate or imply that the referenced devices or elements must have a specific orientation, or be configured and operated in a specific orientation, and therefore cannot be understood as limiting this application.

[0012] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application pertains. The terms used in this specification are for the purpose of describing specific examples only and are not intended to limit the present application.

[0013] The embodiments of the present application disclose a battery structure, which may specifically be a lithium thionyl chloride capacity type battery structure.

[0014] 1 to 7, the present battery structure includes a first case 1 and a battery 11 mounted within the first case 1, a first positive output member 12 provided at the positive terminal of the battery 11, and a cover plate 111 of the battery 11 being the negative terminal of the battery 11; the present battery structure further includes a second case 2 and a capacitor 21 mounted within the second case 2, a second positive output member 22 provided at the positive terminal of the capacitor 21, and a negative output member 23 provided at the negative terminal of the capacitor 21; the first case 1 and the second case 2 are attached and combined, the first positive output member 12 and the second positive output member 22 are electrically connected, and the cover plate 111 and the negative output member 23 are electrically connected.

[0015] In this specific embodiment, the battery structure is specifically designed with two cases that can be attached and combined. Specifically, a two-case mounting structure is provided, namely, a first case 1 and a second case 2. The battery 11 and the capacitor 21 are separately mounted. That is, the battery 11 is mounted separately in the first case 1, and the capacitor 21 is mounted separately in the second case 2. Then, the first case 1 and the second case 2 are mounted together. In addition, the first positive output member 12 of the internal battery 11 is electrically connected to the second positive output member 22 of the capacitor 21, and the cover plate 111 of the battery 11 is electrically connected to the negative output member 23 of the capacitor 21, thereby ensuring that the battery structure can be used normally. As can be seen, the present application does not require the use of the potting sealing process used in the prior art for manufacturing, but specifically employs a two-case mounting process for manufacturing. The newly designed mounting process simplifies the assembly process and avoids the need for complex production processes such as potting sealing during production, effectively avoiding quality and safety issues that are likely to occur during production. At the same time, the new design reduces the production and assembly costs of the battery 11, improves the efficiency of the entire production process, and increases the overall economic benefits.

[0016] More importantly, during the specific production and manufacturing process, the dimensions of this battery structure can be specifically designed, and the designed specific dimensions can be matched to the dimensions of the battery chamber used in the existing application, eliminating the need to create a new mold. At the same time, the assembly process is simple, and it can be used in conjunction with the battery chamber of the existing application device, and can accommodate multiple series or parallel connections, and the overall combination looks more beautiful and is safer.

[0017] In one or more embodiments, battery 11 may be specifically a lithium thionyl chloride capacity battery, and in one or more embodiments, a lithium thionyl chloride capacity battery with a rated capacity corresponding to a lithium thionyl chloride power battery, for example, the rated capacity may be 13 Ah, 14 Ah, or 15 Ah, etc., such that the battery's internal structure remains unchanged so that its capacity meets the needs of the corresponding power battery, and includes components such as, for example, conventional metallic lithium, a carbon positive electrode, a separator, an electrolyte, a current collector, a steel shell, a cover plate, etc.

[0018] In one or more embodiments, the height of the battery 11 itself is smaller than that of an existing lithium thionyl chloride battery. For example, the overall height h1 of the battery 11 may be in the range of 30 mm≦h1≦50 mm. In this way, the height is reduced and the battery 11 has a corresponding capacity of a power battery, which can effectively reduce the cost of the battery 11 and the space occupied by the battery 11.

[0019] In one or more embodiments, the case thickness d2 of the first case 1 may be in the range of 0.1 mm≦d2≦1 mm, for example, the case thickness d2 of the first case 1 may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.18 mm, 0.9 mm, 1 mm, etc. Of course, in some other embodiments, the case thickness d2 of the first case 1 may be other values ​​within the range of 0.1 mm≦d2≦1 mm.

[0020] In one or more embodiments, the case thickness d3 of the second case 2 is preferably in the range of 0.1 mm≦d3≦1 mm, and for example, the case thickness d3 of the second case 2 may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.18 mm, 0.9 mm, 1 mm, etc. Of course, in some other embodiments, the case thickness d3 of the second case 2 may be other values ​​within the range of 0.1 mm≦d3≦1 mm.

[0021] In one or more embodiments, the range of the height h1 of the battery 11 itself is preferably 30 mm≦h1≦50 mm, and for example, the height h1 of the battery 11 itself may be 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, 48 mm, 50 mm, etc. Of course, in some other embodiments, the height h1 of the battery 11 itself may be other values ​​within the range of 30 mm≦h1≦50 mm.

[0022] In one or more embodiments, the range of the height h2 of the first case 1 itself is preferably 30 mm≦h2≦50 mm, and for example, the height h2 of the first case 1 itself may be 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, 48 mm, 50 mm, etc. Of course, in some other embodiments, the height h2 of the first case 1 itself may be other values ​​within the range of 30 mm≦h2≦50 mm.

[0023] In one or more embodiments, the range of the height h3 of the second case 2 itself is preferably 20 mm≦h3≦30 mm, and for example, the height h3 of the second case 2 itself may be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, etc. Of course, in some other embodiments, the height h3 of the second case 2 itself may be other values ​​within the range of 20 mm≦h3≦30 mm.

[0024] In one or more embodiments, the overall height h4 obtained by assembling the first case 1 and the second case 2 is preferably in the range of 50 mm≦h4≦80 mm, and for example, the overall height h4 obtained by assembling the first case 1 and the second case 2 may be 50 mm, 52 mm, 55 mm, 58 mm, 60 mm, 62 mm, 65 mm, 68 mm, 70 mm, 72 mm, 75 mm, 78 mm, 80 mm, etc. Of course, in other embodiments, the overall height h4 obtained by assembling the first case 1 and the second case 2 may be other values ​​within the range of 50 mm≦h4≦80 mm.

[0025] In one or more embodiments, the capacitor 21 may have a diameter of 15 mm and a height of 20 mm, and to better suit practical situations, the second case 2 to which the capacitor 21 is attached may have a diameter of 34 mm and a height of 21 mm.

[0026] To improve structural stability, in one or more embodiments, an insulating member 13 is fixed to the cover plate 111 of the battery 11, and a first mounting groove 131 is recessed in the insulating member 13, and the first positive output member 12 is mounted in the first mounting groove 131. In a specific mounting structure, the insulating member 13 is specifically mounted to the cover plate 111 of the battery 11, for example, the insulating member 13 is fixed to the cover plate 111 of the battery 11, and the insulating member 13 is provided with the first mounting groove 131, and the first positive output member 12 can be engaged in the first mounting groove 131, which can effectively position and fix the position of the first positive output member 12 and improve the overall structural stability and strength.

[0027] At the same time, in order to enable the first positive output member 12 to be connected more compactly to the positive electrode terminal of the battery 11, specifically, a through hole 133 may be provided through the insulating member 13, and the positive electrode pole of the battery 11 can pass through the through hole 133 and be connected to the first positive output member 12, thereby forming the positive electrode terminal of the battery 11.

[0028] In one or more embodiments, the insulating member 13 may specifically be a plastic lid made of a plastic material, which prevents other workpieces from contacting the battery 11 and causing unnecessary short circuit problems, thereby improving overall safety.

[0029] In one or more embodiments, the insulating member 13 may be circular and have a diameter that matches the diameter of the cover plate 111 of the battery 11, for example, the diameter may be smaller than or equal to the diameter of the cover plate 111 of the battery 11.

[0030] In one or more embodiments, the first positive output member 12 may have a welded piece structure and may have a straight welded piece shape, that is, a straight welded piece.

[0031] In one or more embodiments, the thickness d1 of the insulating member 13 may be in the range of 0.1 mm≦d1≦1 mm, for example, the thickness d1 of the insulating member 13 may be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.18 mm, 0.9 mm, 1 mm, etc. Of course, in some other embodiments, the thickness d1 of the insulating member 13 may be other values ​​within the range of 0.1 mm≦d1≦1 mm.

[0032] In actual use, the cover plate 111 of the battery 11 will be the negative terminal of the battery 11. To make the structure more compact and facilitate electrical connection with the negative output member 23 of the capacitor 21, in one or more embodiments, a notch 132 is formed through the insulating member 13, exposing the negative connection area at a position on the cover plate 111 of the battery 11 opposite the notch 132, and the negative output member 23 passes through the notch 132 to be electrically connected to the negative connection area. This avoids interference between the negative output member 23 of the capacitor 21 and the insulating member 13, makes the structure more compact, and also saves the cost of the battery 11 and the space of the battery pack.

[0033] In one or more embodiments, the number of capacitors 21 can be determined according to the actual application of the battery 11. For example, in one or more embodiments, the number of capacitors 21 may be multiple, specifically, three, four, or five, etc., and in the illustrated embodiment, the number is specifically three. In a specific structure, the second positive output member 22 is connected to the positive poles of the multiple capacitors 21, thereby ensuring that the multiple capacitors 21 can operate normally synchronously and improving overall operating stability.

[0034] In order to make the overall structure more compact, in one or more embodiments, a positive output pole 221 as the positive end of the capacitor 21 is protruded from one end of the second positive output member 22 facing away from the capacitor 21, and a connecting member 222 is connected to the second positive output member 22. The connecting member 222 is provided beside the circumferential outer side of the capacitor 21, and the connecting member 222 is electrically connected to the first positive output member 12 and the second positive output member 22, respectively. It was found that, in actual installation, a plurality of capacitors 21 are interposed between the second positive output member 22 connected to the positive pole of the capacitor 21 and the first positive output member 12 connected to the positive pole of the battery 11, with a certain gap between them. Therefore, in order to connect the second positive output member 22 of the capacitor 21 to the first positive output member 12 of the battery 11 more compactly, a connecting member 222 is provided to connect the second positive output member 22 to the first positive output member 12. At the same time, the connecting member 222 is provided to extend from the top of the capacitor 21, which has the positive pole, to the bottom, which has the negative pole. The connecting member 222 is further provided specifically on the outer circumferential side of the capacitor 21, which makes the structure more compact and saves the cost of the battery 11 and the space of the battery pack.

[0035] In one or more embodiments, the shape of the second positive output member 22 may be specifically L-shaped, Z-shaped, plum blossom-shaped, etc., and is not limited thereto.

[0036] In one or more embodiments, the second positive output member 22 may have a welded piece structure and may have a plum blossom-like shape, that is, a plum blossom-like welded piece.

[0037] In one or more embodiments, the negative output member 23 may have a welded piece structure, and the shape of the welded piece may be designed to be a straight line shape, a crescent shape, or the like, depending on the number of capacitors 21. As can be seen from this, in one or more embodiments, the first positive output member 12, the second positive output member 22, and the negative output member 23 have a welded piece structure, and connecting them using the welded piece method can reduce the production and assembly costs of the battery 11 and improve the efficiency of the entire production process.

[0038] In one or more embodiments, the electrical connection between the connection member 222 and the first positive output member 12 may be specifically fixed by a welding method such as resistance welding or laser welding.

[0039] To facilitate structural installation, in one or more embodiments, a contact spring 24 is electrically connected to the negative output member 23, and the contact spring 24 is located in the notch 132 of the insulating member 13, and the contact spring 24 is electrically connected to the cover plate 111 of the battery 11. In this manner, during specific installation, the contact spring 24 can be specifically welded to the cover plate 111 of the battery 11 or the negative output member 23 first. In some embodiments, due to the large space and ease of welding, the contact spring 24 is welded to the cover plate 111 of the battery 11. Then, when the first case 1 and the second case 2 are installed, the non-welded end of the contact spring 24 abuts and contacts the negative output member 23 to complete the electrical connection between them. At this point, the spring is used to make physical contact, and the first case 1 and the second case 2 are then fixed by joining them, which effectively solves the problem of difficulty in the spot welding process at this point compared to a process that requires spot welding both ends.

[0040] To make the overall structure more compact, in one or more embodiments, a second mounting groove 134 is recessed at one end of the insulating member 13 facing the capacitor 21, and the negative output member 23 is mounted in the second mounting groove 134. This effectively positions and fixes the second mounting groove 134, improving the overall structural stability and strength, while also making the structure more compact, thereby saving the cost of the battery 11 and the space of the battery pack.

[0041] Since the first mounting groove 131 and the second mounting groove 134 are simultaneously recessed in the insulating member 13, the first positive output member 12 is mounted in the first mounting groove 131 and the negative output member 23 is mounted in the second mounting groove 134. In order to avoid interference between the first positive output member 12 and the negative output member 23, in one or more embodiments, the depth of the first mounting groove 131 is greater than the depth of the second mounting groove 134, thereby shifting the mounting positions of the first positive output member 12 and the negative output member 23 to avoid interference.

[0042] In one or more embodiments, the shape of the second mounting groove 134 matches the shape of the negative output member 23, and in one or more embodiments, the shape may be arc-shaped or may be crescent-shaped as shown.

[0043] In order to easily attach capacitor 21 to first case 1, the top end of second case 2 away from first case 1 is left open, which makes it easy to attach capacitor 21 from the open portion and improves operating efficiency. Therefore, in order to prevent damage to capacitor 21 due to exposure of the open portion and improve overall sealing, a battery cover 3 is provided at the open portion of the top end of second case 2, thereby improving overall safety performance.

[0044] Since the positive output pole 221 protrudes from the second positive output member 22, the battery cover 3 is provided with an opening 31 to allow better connection to an external bus bar, and the positive output pole 221 can extend through the opening 31 to the outside of the entire battery structure, thereby ensuring normal operation of the battery structure. In addition, the battery cover 3 may be placed on the top end of the first case 1, and then the entire assembly may be heat-shrink packaged in a casing to complete the entire assembly. [Explanation of symbols]

[0045] 1 first case, 11 battery, 111 cover plate, 12 first positive output member, 13 insulating member, 131 first mounting groove, 132 notch, 133 through hole, 134 second mounting groove, 2 second case, 21 capacitor, 22 second positive output member, 221 positive output post, 222 connecting member, 23 negative output member, 24 contact spring, 3 battery cover, 31 opening.

Claims

1. The battery includes a first case (1), a battery (11) mounted in the first case (1), a second case (2), and a capacitor (21) mounted in the second case (2), The battery (11) is provided with a first positive output member (12) at its positive terminal, and its cover plate (111) is the negative terminal of the battery (11). The capacitor (21) is provided with a second positive output member (22) at its positive terminal and a negative output member (23) at its negative terminal, The first case (1) and the second case (2) are attached and combined, the first positive output member (12) and the second positive output member (22) are electrically connected, and the cover plate (111) and the negative output member (23) are electrically connected. Battery structure.

2. An insulating member (13) is fixed to the cover plate (111) of the battery (11), and a first mounting groove (131) is recessed in the insulating member (13) into which the first positive output member (12) is mounted. The battery structure of claim 1 .

3. The insulating member (13) has a notch (132) formed therethrough, and a negative electrode connection region is exposed from a position facing the notch (132) on the cover plate (111) of the battery (11), and the negative electrode output member (23) passes through the notch (132) and is electrically connected to the negative electrode connection region. The battery structure of claim 2 .

4. The first positive output member (12), the second positive output member (22), and the negative output member (23) have a welded piece structure. The battery structure of claim 2 .

5. A plurality of the capacitors (21) are provided, and the second positive output member (22) is connected to the positive poles of the plurality of capacitors (21), A positive output pole (221) as a positive end of the capacitor (21) is protruded from one end of the second positive output member (22) facing away from the capacitor (21), and a connecting member (222) is connected to the second positive output member (22) and is provided near the outer side of the capacitor (21) in the circumferential direction and is electrically connected to the first positive output member (12) and the second positive output member (22). The battery structure according to any one of claims 1 to 4.

6. The negative electrode output member (23) is electrically connected to a contact spring (24) located in the notch (132) of the insulating member (13) and electrically connected to the cover plate (111) of the battery (11). The battery structure of claim 3 .

7. A second mounting groove (134) is formed in one end of the insulating member (13) facing the capacitor (21), and the negative output member (23) is mounted in the second mounting groove (134), and the depth of the first mounting groove (131) is greater than the depth of the second mounting groove (134). The top end of the second case (2) that is away from the first case (1) is open, and a battery cover (3) having an opening (31) penetrating therethrough is provided at the open portion of the top end of the second case (2). The battery structure of claim 2 .

8. The thickness d1 of the insulating member (13) is in the range of 0.1 mm≦d1≦1 mm, The range of the case thickness d2 of the first case (1) is 0.1 mm≦d2≦1 mm, The range of the case thickness d3 of the second case (2) is 0.1 mm≦d3≦1 mm. The battery structure according to any one of claims 2 to 4, 6 and 7.

9. The range of the height h1 of the battery (11) itself is 30 mm≦h1≦50 mm, The range of the height h2 of the first case (1) itself is 30 mm≦h2≦50 mm, The range of the height h3 of the second case (2) itself may be 20 mm≦h3≦30 mm, The range of the overall height h4 obtained by attaching and combining the first case (1) and the second case (2) is 50 mm≦h4≦80 mm. The battery structure according to any one of claims 2 to 4, 6 and 7.

10. A battery structure according to any one of claims 1 to 9, Battery pack.

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