Battery structure and battery pack

Abstract

Battery structure, comprehensive: a first housing (1) and a battery (11) mounted in the first housing (1), wherein a positive terminal of the battery (11) is provided with a first positive electrode output element (12), wherein a cover plate (111) of the battery (11) is a negative terminal of the battery (11); a second housing (2) and a capacitor (21) mounted in the second housing (2), wherein a positive terminal of the capacitor (21) is provided with a second positive electrode output element (22), wherein a negative terminal of the capacitor (21) is provided with a negative electrode output element (23); wherein the first housing (1) and the second housing (2) are connected to each other by assembly, wherein the first positive electrode output element (12) and the second positive electrode output element (22) are electrically connected to each other, wherein the cover plate (111) and the negative electrode output element (23) are electrically connected to each other.

Description

TECHNICAL AREA

[0001] The present application relates to the field of battery technology and in particular to a battery structure and a battery pack. STATE OF THE ART

[0002] Lithium-thionyl chloride batteries are commonly used in smart card meters, computer power supplies, medical instruments, wireless communications, oil drilling, portable communication devices, scientific research instruments, remote data acquisition systems, military applications, and other electrical devices and the like. In some applications, such as smart card meters and military applications, lithium-thionyl chloride power batteries are required.

[0003] However, since power batteries suffer from voltage hysteresis and safety risks that limit their use, a composite power supply solution consisting of capacity batteries and capacitors is now being introduced. The manufacturing process in the relevant technology is as follows: first, a conventional lithium-thionyl chloride battery is manufactured; then, a supercapacitor is produced with a casing as the positive electrode and a base as the negative electrode, capable of delivering a large current pulse. It is connected to the supercapacitor via a cable connection; the connection points are filled with resin to create an integrated battery that can solve the problem of large pulse current capacity and exhibits no voltage delay.

[0004] The combined battery solution mentioned in the background technology only alleviates the shortcomings of the battery discharge performance, and the actual assembly process is complicated, using the glue filling process in the production process and resulting in a production time that is too long, and where, for example, improper gluing and welding processes can easily lead to quality risks in battery production. DISCLOSURE OF THE USE PATTERN

[0005] In a first aspect, the present application provides a battery structure that includes the following: a first housing and a battery mounted in the first housing, wherein a positive terminal of the battery is provided with a first positive electrode output element, wherein a cover plate of the battery is a negative terminal of the battery; a second housing and a capacitor mounted in the second housing, wherein the positive terminal of the capacitor is provided with a second positive electrode output element, and wherein the negative terminal of the capacitor is provided with a negative electrode output element; wherein the first housing and the second housing are connected to each other by assembly, wherein the first positive electrode output element and the second positive electrode output element are electrically connected to each other, wherein the cover plate and the negative electrode output element are electrically connected to each other.

[0006] In a second aspect, the present application provides a battery pack comprising a battery structure as described above.

[0007] The present application does not require the conventional adhesive filling and sealing process for manufacturing, but instead utilizes the assembly process of two housings. The assembly process of the newly designed method is simple, thus avoiding complex production steps such as adhesive filling and sealing during the production process and effectively preventing quality and safety problems that frequently arise during production. At the same time, the new design can reduce battery production and assembly costs, improve the efficiency of the entire production process, and increase overall economic benefits.

[0008] More importantly, the battery structure can be specifically designed within the production process, and this designed size can match the dimensions of the battery compartment used in existing applications, eliminating the need for new mold making. Simultaneously, the assembly process is simple and compatible with the battery compartments of existing application devices. Furthermore, multiple batteries can be connected in series or parallel, resulting in a more aesthetically pleasing and safer overall appearance. PRESENTATION OF THE REGISTRATION Fig. Figure 1 is a schematic structural representation of the battery structure for an embodiment of the present application; Fig. Figure 2 is a schematic representation of the battery structure in its exploded state for an embodiment of the present application; Fig. Figure 3 is a schematic internal structural representation of the battery structure for an embodiment of the present application; Fig. Figure 4 is another schematic internal structural representation of the battery structure for an embodiment of the present application; Fig. Figure 5 is a further schematic internal structural representation of the battery structure for an embodiment of the present application; Fig. Figure 6 is a schematic structural representation of the insulating element in the battery structure for an embodiment of the present application; Fig. 7 is a further schematic internal structural representation of the battery structure for an embodiment of the present application; Reference symbol list:

[0009] 1-First housing, 11-Battery, 111-Cover plate, 12-First positive electrode output element, 13-Insulating element, 131-First mounting groove, 132-Recess, 133-Through hole, 134-Second mounting groove, 2-Second housing, 21-Capacitor, 22-Second positive electrode output element, 221-Positive electrode output terminal, 222-Connecting element, 23-Negative electrode output element, 24-Contact spring, 3-Battery cover, 31-Opening. SPECIFIC EXECUTION FORMS

[0010] In describing the present application, it should be noted that the orientations or positional relationships indicated by the terms "top", "bottom", "front", "back", "left", "right", "vertical", "horizontal", "roof", "floor", "inside", "outside" and the like are the orientations or positional relationships shown based on the drawings and serve only for the convenience and simplification of the description of the present application, rather than indicating or implying that the device or element in question must have a particular orientation or orientation or be designed and operated in a particular orientation, and should therefore not be construed as limiting the present application.

[0011] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as they would be generally understood by a person skilled in the technical field of the present application. The terminology used herein in the description of the present application serves only to describe specific embodiments and is not intended to limit the present application.

[0012] The embodiments of the present application disclose a battery structure, which may in particular be a structure of a lithium thionyl chloride capacity battery.

[0013] With reference to Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, Fig. 6 to Fig.7 The battery structure comprises a first housing 1 and a battery 11 mounted in the first housing 1, wherein the positive terminal of the battery 11 is provided with a first positive electrode output element 12, and the cover plate 111 of the battery 11 represents the negative terminal of the battery 11; the battery structure further comprises a second housing 2 and a capacitor 21 mounted in the second housing 2, wherein the positive terminal of the capacitor 21 is provided with a second positive electrode output element 22, and wherein the negative terminal of the capacitor 21 is provided with a negative electrode output element 23; wherein the first housing 1 and the second housing 2 are assembled and combined, the first positive electrode output element 12 and the second positive electrode output element 22 being electrically connected to each other, and the cover plate 111 being electrically connected to the negative electrode output element 23.

[0014] In this particular embodiment, the battery structure consists of two housing structures that can be assembled and combined. By providing the assembly structure consisting of the first housing 1 and the second housing 2, the battery 11 and the capacitor 21 are mounted separately; that is, the battery 11 is mounted separately in the first housing 1 and the capacitor 21 is mounted separately in the second housing 2. Then, the first housing 1 and the second housing 2 are assembled into a single body, with the first positive electrode output element 12 of the battery 11 and the second positive electrode output element 22 of the capacitor 21 being electrically connected. The cover plate 111 of the battery 11 and the negative electrode output element 23 of the capacitor 21 are also electrically connected to ensure that the battery structure can be used normally.It is evident that the present application for manufacturing does not require the conventional adhesive filling and sealing process, but instead focuses on the assembly process of two housings. The assembly process of the newly designed assembly method is simple, thus avoiding complex production steps such as adhesive filling and sealing during the production process and effectively preventing quality and safety problems that frequently arise during production. At the same time, the new design can reduce the production and assembly costs of battery 11, improve the efficiency of the entire production process, and increase the overall economic benefits.

[0015] More importantly, the battery structure can be specifically designed within the production process, and this designed size can match the dimensions of the battery compartment used in existing applications, eliminating the need for new mold making. Simultaneously, the assembly process is simple and can be adapted to the battery compartment of existing application devices. Multiple series or parallel connections are also compatible, and the overall combined appearance is more aesthetically pleasing and safer.

[0016] In one or more embodiments, the battery 11 is a lithium-thionyl chloride capacity battery, and in one or more embodiments, it is a lithium-thionyl chloride capacity battery with a nominal capacity equivalent to that of a lithium-thionyl chloride power battery, for example, a nominal capacity of 13 Ah, 14 Ah, or 15 Ah, or the like. In such a configuration, the design of the battery's internal structure remains unchanged, and it comprises, for example, conventional metallic lithium, a positive carbon electrode, a separator, an electrolyte, a current collector, a steel casing, a cover plate, and other components, such that its capacity corresponds to the power battery capacity required by the relevant specifications.

[0017] In one or more embodiments, the height of the battery 11 itself is smaller than that of the existing lithium-thionyl chloride battery, and, for example, the height d1 of the entire battery 11 can be in the range of [value missing in original text]. In such an arrangement, the height is reduced, while the capacity of the battery 11 corresponds to the capacity of a power battery, thereby effectively saving the cost of the battery 11 and the space occupied by the battery 11.

[0018] In one or more embodiments, the wall thickness d2 of the first housing 1 can be in the range of 0.1 mm ≤ d2 ≤ 1 mm, and, for example, the wall thickness d2 of the first housing 1 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or the like. In some further embodiments, it is of course provided that the wall thickness d2 of the first housing 1 can also have other values ​​in the range of 0.1 mm ≤ d2 ≤ 1 mm.

[0019] In one or more embodiments, the wall thickness d3 of the second housing 2 can be selected in the range of 0.1 mm ≤ d3 ≤ 1 mm, and, for example, the wall thickness d3 of the second housing 2 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or the like. In some further embodiments, it is of course provided that the wall thickness d3 of the second housing 2 can also have other values ​​in the range of 0.1 mm ≤ d3 ≤ 1 mm.

[0020] In one or more embodiments, the height h1 of the battery 11 itself can be selected within the range of 30 mm ≤ h1 ≤ 50 mm, and, for example, the height h1 of the battery 11 itself can be 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, 48 mm, 50 mm, or the like. In some further embodiments, it is of course provided that the height h1 of the battery 11 itself can also have other values ​​within the range of 30 mm ≤ h1 ≤ 50 mm.

[0021] In one or more embodiments, the height h2 of the first housing 1 itself can be selected within the range of 30 mm ≤ h2 ≤ 50 mm, and, for example, the height h2 of the first housing 1 itself can be 30 mm, 32 mm, 35 mm, 38 mm, 40 mm, 42 mm, 45 mm, 48 mm, 50 mm, or the like. In some further embodiments, it is of course provided that the height h2 of the first housing 1 itself can also have other values ​​within the range of 30 mm ≤ h2 ≤ 50 mm.

[0022] In one or more embodiments, the height h3 of the second housing 2 itself can be selected within the range of 20 mm ≤ h3 ≤ 30 mm, and, for example, the height h3 of the second housing 2 itself can be 20 mm, 21 mm, 22 mm, 23 mm, 24 mm, 25 mm, 26 mm, 27 mm, 28 mm, 29 mm, 30 mm, or the like. In some further embodiments, it is of course provided that the height h3 of the second housing 2 itself can also have other values ​​within the range of 20 mm ≤ h3 ≤ 30 mm.

[0023] In one or more embodiments, the height h4 of the whole formed by assembling the first housing 1 and the second housing 2 can be selected to be between 50 mm ≤ h4 ≤ 80 mm, and, for example, the height h4 of the whole formed by assembling the first housing 1 and the second housing 2 can 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, or the like. In some further embodiments, it is of course provided that the height h4 of the whole formed by assembling the first housing 1 and the second housing 2 can also have other values ​​within the range of 50 mm ≤ h4 ≤ 80 mm.

[0024] In one or more embodiments, it is provided that the capacitor 21 can have a diameter of 15 mm and a height of 20 mm, wherein the diameter of the second housing 2 for mounting the capacitor 21 is 34 mm, and the height can be 21 mm for better adaptation to the actual situation.

[0025] To improve structural stability, in one or more embodiments, an insulating element 13 is attached to the cover plate 111 of the battery 11, the insulating element 13 being provided with a recessed first mounting groove 131, wherein the first positive electrode output element 12 is mounted in the first mounting groove 131. In a specific mounting structure, the insulating element 13 is specifically mounted on the cover plate 111 of the battery 11, and, for example, the insulating element 13 can be attached to the cover plate 111 of the battery 11; and a first mounting groove 131 is provided on the insulating element 13, wherein the first positive electrode output element 12 can be locked in the first mounting groove 131, thereby effectively limiting and fixing the position of the first positive electrode output element 12, thus improving the overall structural stability and strength.

[0026] In order to connect the first positive electrode output element 12 more compactly to the positive terminal of the battery 11, a through-hole 133 can be provided through the insulating element 13, wherein the positive terminal of the battery 11 can pass through the through-hole 133 and be connected to the first positive electrode output element 12 to form the positive terminal of the battery 11.

[0027] In one or more embodiments, the insulating element 13 may in particular be a plastic cover made of plastic material to prevent other workpieces from coming into contact with the battery 11 and causing unnecessary short-circuit problems, thereby improving overall safety.

[0028] In one or more embodiments, it is provided that the insulating element 13 can be circular and the diameter of the insulating element 13 is adapted to the diameter of the cover plate 111 of the battery 11, and for example the diameter of the insulating element 13 can be less than or equal to the diameter of the cover plate 111 of the battery 11.

[0029] In one or more embodiments, it is provided that the first positive electrode output element 12 can have a welded sheet structure and its shape can be rectilinear, i.e. a rectilinear welded sheet.

[0030] In one or more embodiments, the thickness d1 of the insulating element 13 can be in the range of 0.1 mm ≤ d1 ≤ 1 mm, and, for example, the thickness d1 of the insulating element 13 can be 0.1 mm, 0.2 mm, 0.3 mm, 0.4 mm, 0.5 mm, 0.6 mm, 0.7 mm, 0.8 mm, 0.9 mm, 1 mm, or the like. In some further embodiments, it is of course provided that the thickness d1 of the insulating element 13 can also have other values ​​in the range of 0.1 mm ≤ d1 ≤ 1 mm.

[0031] In actual use, the cover plate 111 of the battery 11 serves as the negative terminal of the battery 11. To make the structure more compact and to facilitate the electrical connection with the negative electrode output element 23 of the capacitor 21, a recess 132 is provided through the insulating element 13 in one or more embodiments. A negative electrode connection area on the cover plate 111 of the battery 11 is exposed at a position opposite the recess 132, and the negative electrode output element 23 passes through the recess 132 and is electrically connected to the negative electrode connection area. Such an arrangement can prevent mutual interference between the negative electrode output element 23 of the capacitor 21 and the insulating element 13 and can also make the structure more compact, thereby saving on the cost of the battery 11 and the space required for the battery pack.

[0032] In one or more embodiments, the number of capacitors 21 can be determined according to the specific battery 11 used. For example, in one or more embodiments, the number of capacitors 21 can be a multiple, specifically three, four, five, or the like, and in the illustrated embodiment, specifically three. In one specific configuration, the second positive electrode output element 22 is connected to the positive terminals of the multiple capacitors 21 to ensure that the multiple capacitors 21 can operate normally and synchronously, thereby improving overall operational stability.

[0033] In order to make the overall structure more compact, in one or more embodiments it is provided that a positive electrode output pole 221 protrudes from an end of the second positive electrode output element 22 facing away from the capacitor 21, wherein the positive electrode output pole 221 serves as the positive pole of the capacitor 21, wherein the second positive electrode output element 22 is connected to a connecting element 222, wherein the connecting element 222 is arranged circumferentially on the outside of the capacitor 21, and wherein the connecting element 222 is electrically connected to the first positive electrode output element 12 and the second positive electrode output element 22, respectively.During actual assembly, it is found that between the second positive electrode output element 22, which is connected to the positive terminal of the capacitor 21, and the first positive electrode output element 12, which is connected to the positive terminal of the battery 11, there are several capacitors 21 and a certain distance between them.To connect the second positive electrode output element 22 of the capacitor 21 and the first positive electrode output element 12 of the battery 11 in a more compact manner, a connecting element 222 is provided to establish the connection between the second positive electrode output element 22 and the first positive electrode output element 12; at the same time, the connecting element 222 is extended from the top of the capacitor 21 with the positive electrode to the bottom with the negative electrode, and the connecting element 222 is specifically arranged circumferentially on the outside of the capacitor 21, so that the structure is more compact and the cost of the battery 11 and the space required for the battery pack can be saved.

[0034] In one or more embodiments, it is provided that the shape of the second positive electrode output element 22 can be L-shaped, Z-shaped, plum blossom-shaped or the like, but this is not the only possible form.

[0035] In one or more embodiments, it is provided that the second positive electrode output element 22 can have a welded sheet structure and its shape can be the shape of a plum blossom, that is, a plum blossom-shaped welded sheet.

[0036] In one or more embodiments, the negative electrode output element 23 is provided to have a welded sheet metal structure, and its shape can be straight, crescent-shaped, or the like, depending on the number of capacitors 21. It is evident that in one or more embodiments, the first positive electrode output element 12, the second positive electrode output element 22, and the negative electrode output element 23 are welded sheet metal structures, whereby the use of welded sheet metal for connection reduces the production and assembly costs of the battery 11 and improves the efficiency of the overall production process.

[0037] In one or more embodiments, it is provided that the electrical connection between the connecting element 222 and the first positive electrode output element 12 can be established by welding processes such as resistance welding or laser welding.

[0038] To facilitate assembly of the structure, in one or more embodiments the negative electrode output element 23 is electrically connected to a contact spring 24, the contact spring 24 being located in a recess 132 of the insulating element 13, and the contact spring 24 being electrically connected to the cover plate 111 of the battery 11. In such an arrangement, the contact spring 24 can first be welded to the cover plate 111 of the battery 11 or to the negative electrode output element 23 during the specific assembly process.In some embodiments, welding is carried out on the cover plate 111 of the battery 11, and the space is large, which facilitates the welding process; when the first housing 1 and the second housing 2 are then assembled, the unwelded end of the contact spring 24 is specifically placed against the negative electrode output element 23 to establish the electrical connection between the two, with a spring being used for physical contact at this point, and then the first housing 1 and the second housing 2 are joined and fixed together, which, compared to the method requiring spot welding at both ends, can effectively solve the problem of the difficult spot welding process at this point.

[0039] To make the overall structure more compact, in one or more embodiments the insulating element 13 is provided with a recessed second mounting groove 134 at an end facing the capacitor 21, with the negative electrode output element 23 being mounted in the second mounting groove 134. Such a configuration can effectively limit and fix the position of the second mounting groove 134, thereby improving the overall structural stability and strength; at the same time, the structure becomes more compact, which saves on the cost of the battery 11 and the space required for the battery pack.

[0040] The insulating element 13 is provided with a recessed first mounting groove 131 and a recessed second mounting groove 134, wherein the first positive electrode output element 12 is mounted in the first mounting groove 131, and the negative electrode output element 23 is mounted in the second mounting groove 134. To prevent mutual interference between the first positive electrode output element 12 and the negative electrode output element 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, in order to offset the mounting positions of the first positive electrode output element 12 and the negative electrode output element 23 and thus prevent mutual interference.

[0041] In one or more embodiments, the shape of the second mounting groove 134 corresponds to the shape of the negative electrode output element 23. In one or more embodiments, the shape is arc-shaped, but can also be crescent-shaped, as shown in the figure.

[0042] To facilitate the mounting of the capacitor 21 on the first housing 1, the upper end of the second housing 2, facing away from the first housing 1, is open, allowing the capacitor 21 to be mounted from this open position, thus improving work efficiency. To prevent damage to the capacitor 21 from exposure and to improve the overall sealing performance, a battery cover 3 is provided at the open position at the upper end of the second housing 2, thereby enhancing overall safety.

[0043] The second positive electrode output element 22 is provided with a protruding positive electrode output terminal 221. To facilitate better connection to an external busbar, an opening 31 is provided through the battery cover 3, allowing the positive electrode output terminal 221 to pass through the opening 31 and extend to the outside of the entire battery structure, ensuring its proper functioning. After the battery cover 3 is fitted onto the top of the first housing 1, the entire assembly can be shrink-wrapped with a sleeve to complete the assembly.

Claims

[1] Battery structure, including: a first housing (1) and a battery (11) mounted in the first housing (1), wherein a positive terminal of the battery (11) is provided with a first positive electrode output element (12), wherein a cover plate (111) of the battery (11) is a negative terminal of the battery (11); a second housing (2) and a capacitor (21) mounted in the second housing (2), wherein a positive terminal of the capacitor (21) is provided with a second positive electrode output element (22), wherein a negative terminal of the capacitor (21) is provided with a negative electrode output element (23); wherein the first housing (1) and the second housing (2) are connected to each other by assembly, wherein the first positive electrode output element (12) and the second positive electrode output element (22) are electrically connected to each other, wherein the cover plate (111) and the negative electrode output element (23) are electrically connected to each other. [2] Battery structure according to claim 1, wherein an insulating element (13) is attached to the cover plate (111) of the battery (11), wherein the insulating element (13) is provided with a recessed first mounting groove (131), wherein the first positive electrode output element (12) is mounted in the first mounting groove (131). [3] Battery structure according to claim 2, wherein a recess (132) is provided through the insulating element (13), wherein a negative electrode connection area is exposed on the cover plate (111) of the battery (11) at a location opposite the recess (132), wherein the negative electrode output element (23) passes through the recess (132) and is electrically connected to the negative electrode connection area. [4] Battery structure according to claim 2, wherein the first positive electrode output element (12), the second positive electrode output element (22) and the negative electrode output element (23) are welded sheet metal structures. [5] Battery structure according to one of claims 1 to 4, wherein several capacitors (21) are provided, wherein the second positive electrode output element (22) is connected to positive poles of the several capacitors (21); wherein a positive electrode output pole (221) projects from an end of the second positive electrode output element (22) facing away from the capacitor (21), wherein the positive electrode output pole (221) serves as the positive pole of the several capacitors (21), wherein the second positive electrode output element (22) is connected to a connecting element (222), wherein the connecting element (222) is arranged circumferentially on the outside of the capacitor (21), wherein the connecting element (222) is electrically connected to the first positive electrode output element (12) and the second positive electrode output element (22), respectively. [6] Battery structure according to claim 3, wherein the negative electrode output element (23) is electrically connected to a contact spring (24), wherein the contact spring (24) is located in the recess (132) of the insulating element (13), and wherein the contact spring (24) is electrically connected to the cover plate (111) of the battery (11). [7] Battery structure according to claim 2, wherein the insulating element (13) has a recessed second mounting groove (134) at an end facing the capacitor (21), wherein the negative electrode output element (23) is mounted in the second mounting groove (134), wherein the depth of the first mounting groove (131) is greater than the depth of the second mounting groove (134); wherein an upper end of the second housing (2) facing away from the first housing (1) is open, wherein a battery cover (3) is provided at the open upper end of the second housing (2); wherein an opening (31) is provided through the battery cover (3). [8] Battery structure according to one of claims 2 to 4, 6 and 7, wherein the thickness d1 of the insulating element (13) is in the range of 0.1 mm ≤ d1 ≤ 1 mm; wherein the housing wall thickness d2 of the first housing (1) is in the range of 0.1 mm ≤ d2 ≤ 1 mm; wherein the housing wall thickness d3 of the second housing (2) is in the range of 0.1 mm ≤ d3 ≤ 1 mm. [9] Battery structure according to one of claims 2 to 4, 6 and 7, wherein the height h1 of the battery (11) itself is in the range of 30 mm ≤ hl ≤ 50 mm; wherein the height h2 of the first housing (1) itself is in the range of 30 mm ≤ h2 ≤ 50 mm; where the height h3 of the second housing (2) itself can be in the range of 20 mm ≤ h3 ≤ 30 mm; where the height h4 of the whole formed by assembling the first housing (1) and the second housing (2) is in the range of 50 mm ≤ h4 ≤ 80 mm. [10] Battery pack comprising a battery structure according to any one of claims 1 to 9.

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