A double-layer battery box for power supply

Abstract

This utility model discloses a double-layer battery box for power supply, comprising: a box body and a battery box. The box body is provided with a start switch, and a cavity is provided at the bottom of the box body. An outer cover is attached to the outer end of the cavity. The battery box can be snapped into the cavity. The battery box includes a first contact plate, a second contact plate, and a battery box body. The first contact plate and the second contact plate are respectively snapped into the two sides of the battery box body. A first snap-fit ​​block is provided at the bottom end of the first contact plate. A second snap-fit ​​block and a third snap-fit ​​block are provided at the bottom end of the second contact plate. Battery contact assemblies are provided on the end faces of the first contact plate and the battery contact assemblies include multiple alternating springs and washers. A first slot is provided at the bottom of the lower side of the battery box body, and a second slot and a third slot are provided at the bottom of the upper side of the battery box body. The first snap-fit ​​block, the second snap-fit ​​block, and the third snap-fit ​​block can be correspondingly snapped into the first slot, the second slot, and the third slot, respectively.

Description

Technical Field

[0001] This utility model belongs to the field of battery power supply technology, and specifically relates to a double-layer battery box for power supply. Background Technology

[0002] In existing technologies, battery cases, as an indispensable power supply component in various portable electronic devices, are widely used in products such as smart locks, toys, remote controls, and handheld instruments. However, traditional battery case designs generally suffer from problems such as complex structures, inconvenient installation, susceptibility to reverse installation errors, and poor expandability, seriously affecting user experience and product reliability. First, most battery cases use screw fixing or simple plug-in structures, which not only have low assembly efficiency but are also prone to structural loosening or damage in scenarios with frequent battery replacements, reducing product durability. Second, existing battery cases generally lack effective anti-reverse installation designs. If users install the batteries with the positive and negative terminals reversed when replacing them, it may lead to short circuits, device damage, or even safety hazards, especially in installation environments without obvious polarity markings or with limited space. In addition, traditional battery cases are mostly single-structure designs, making it difficult to flexibly adapt to the needs of different numbers or arrangements of batteries. For example, in applications requiring power from dual-layer or multi-cell batteries, the entire case structure often needs to be redesigned, resulting in high development costs and poor versatility. Furthermore, batteries experience vibration or displacement during use. Without an effective elastic contact structure, poor contact can easily occur, affecting power supply stability. Therefore, providing a battery box structure that is simple in structure, easy to install, has anti-reverse installation functionality, supports modular expansion, and has reliable contact has become a pressing technical challenge in this field. To address the problems existing in the prior art, this application proposes a novel double-layer battery box structure, aiming to overcome the shortcomings of existing battery boxes, such as complex assembly, easy reverse installation, poor expandability, and unstable contact, thereby improving the overall performance and applicability of the battery box. Utility Model Content

[0003] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a double-layer battery box that is structurally safe, easy to assemble, reliable in connection and has anti-misinstallation function, so as to solve the technical problems of existing battery boxes in practical applications, such as easy reverse installation, poor contact, loose structure, complicated assembly and poor expandability.

[0004] To solve the above problems, the technical solution adopted by this utility model is as follows: a double-layer battery box for power supply, comprising: a box body, a start switch provided on the box body, a cavity provided at the bottom of the box body, and an outer cover connected to the outer end of the cavity;

[0005] A battery box is provided, which can be snapped into the cavity. The battery box includes a first contact plate, a second contact plate, and a battery box body. The first contact plate and the second contact plate are respectively snapped into both sides of the battery box body. The bottom end of the first contact plate is provided with a first snap-fit ​​block; the bottom end of the second contact plate is provided with a second snap-fit ​​block and a third snap-fit ​​block. Battery contact assemblies are provided on the end faces of the first contact plate and the second contact plate. The battery contact assemblies include multiple alternating springs and washers. The bottom of the lower side of the battery box body is provided with a first slot, and the bottom of the upper side of the battery box body is provided with a second slot and a third slot. The first snap-fit ​​block, the second snap-fit ​​block, and the third snap-fit ​​block can be correspondingly snapped into the first slot, the second slot, and the third slot, so that the first contact plate and the second contact plate are connected to the battery box body.

[0006] Compared to existing technologies, the advantages of this invention are as follows: The double-layer battery box structure proposed in this invention achieves physical anti-reverse installation by connecting the separate first and second contact plates to the battery box using an asymmetrical snap-fit ​​structure. This completely solves the technical problem of short circuits or equipment damage caused by incorrect installation in traditional battery boxes. The precise fit between the snap-fit ​​block and the snap-fit ​​slot not only simplifies the assembly process but also improves connection stability. The battery contact assembly, consisting of springs and washers, located on the end faces of the first and second contact plates, ensures continuous and stable electrical contact between the battery and the circuit, maintaining good conductivity even under vibration. The entire battery box is quickly installed and securely positioned by inserting a fixing block into the fixing slot of the box cavity, making it suitable for portable devices such as smart locks and remote controls.

[0007] The aforementioned battery box has a first fixing block on the outer side of the upper side of the battery box body and a second fixing block on the outer side of the lower side of the battery box body. The first fixing block and the second fixing block are integrally formed with the battery box body.

[0008] The aforementioned battery box has a first fixing groove on the upper side of the cavity and a second fixing groove on the lower side of the cavity. The first fixing block can be inserted into the first fixing groove, and the second fixing block can be inserted into the second fixing groove, so that the battery box body is fixed to the box body.

[0009] The battery box described above has a locking platform on both the left and right sides of the battery box body. The edges of the first contact plate and the second contact plate are provided with locking surfaces. The locking platform can fit against the locking surface to fix the first contact plate and the second contact plate to the battery box body.

[0010] The battery box described above has multiple buckles on both the upper and lower surfaces of the battery box body. These buckles can be engaged with the upper surfaces of the first contact plate and the second contact plate to fix the first contact plate and the second contact plate to the battery box body in a secondary manner.

[0011] The battery box described above has multiple hollow battery placement racks at the bottom of the battery box body, and a crossbar is provided between two adjacent battery placement racks, with a positioning frame on the crossbar.

[0012] The battery box described above has two sets of battery contact assemblies, and each battery contact assembly is provided with two springs and two washers.

[0013] In the aforementioned battery box, the spring is connected to the negative terminal of the battery, and the washer is connected to the positive terminal of the battery.

[0014] The aforementioned battery box can be a smart lock or a handheld remote control.

[0015] The aforementioned battery box is made of insulating material. Attached Figure Description

[0016] Figure 1 This is an exploded view of the double-layer battery box structure according to an embodiment of the present invention;

[0017] Figure 2 This is one of the schematic diagrams of the battery box structure according to an embodiment of the present utility model;

[0018] Figure 3 This is a second schematic diagram of the battery box structure according to an embodiment of the present utility model;

[0019] Figure 4 This is the third schematic diagram of the battery box structure according to an embodiment of the present utility model;

[0020] Reference numerals: 100 Box body, 110 Start switch, 120 Cavity, 121 First fixing slot, 122 Second fixing slot, 200 Battery box, 210 First contact plate, 211 First latching block, 220 Second contact plate, 221 Second latching block, 222 Third latching block, 230 Battery box body, 231 First slot, 232 Second slot, 233 Third slot, 234 First fixing block, 235 Second fixing block, 236 Locking platform, 237 Battery placement rack, 238 Crossbar, 239 Positioning frame, 240 Battery contact assembly, 241 Spring, 242 Washer, 250 Snap-on surface, 260 Buckle. Detailed Implementation

[0021] The embodiments of this utility model are described in detail below, with reference to Figures 1 to 4This utility model provides a double-layer battery box for power supply, including: a box body 100 and a battery box 200. The box body 100 is provided with a start switch 110, and a cavity 120 is provided at the bottom of the box body 100. An outer cover is attached to the outer end of the cavity 120. The battery box 200 can be snapped into the cavity 120. The battery box 200 includes a first contact plate 210, a second contact plate 220, and a battery box body 230. The first contact plate 210 and the second contact plate 220 are respectively snapped into both sides of the battery box body 230. A first snap-fit ​​block 211 is provided at the bottom end of the first contact plate 210; a second snap-fit ​​block 221 and a second contact plate 220 are provided at the bottom end of the second contact plate 220. The third latching block 222; battery contact assemblies 240 are provided on the end faces of the first contact plate 210 and the second contact plate 220, and the battery contact assembly 240 includes a plurality of alternately arranged springs 241 and washers 242; the bottom of the lower side of the battery box body 230 is provided with a first latching slot 231, and the bottom of the upper side of the battery box body 230 is provided with a second latching slot 232 and a third latching slot 233. The first latching block 211, the second latching block 221 and the third latching block 222 can be correspondingly latched into the first latching slot 231, the second latching slot 232 and the third latching slot 233, so that the first contact plate 210 and the second contact plate 220 are connected to the battery box body 230. The dual-layer battery box structure proposed in this utility model achieves physical anti-reverse installation by connecting the separate first contact plate 210 and second contact plate 220 to the battery box 200 using an asymmetrical snap-fit ​​structure. This completely solves the technical problem of short circuits or equipment damage caused by incorrect installation in traditional battery boxes. The precise matching of the snap-fit ​​block and the snap-fit ​​slot not only simplifies the assembly process but also improves connection stability. The battery contact assembly 240, composed of a spring 241 and a washer 242, located on the end faces of the first contact plate 210 and the second contact plate 220, ensures continuous and stable electrical contact between the battery and the circuit, maintaining good conductivity even under vibration. The entire battery box 200 is connected to the fixing slot of the cavity 120 of the box body 100 via a fixing block, achieving quick installation and secure positioning. It is suitable for portable devices such as smart locks and remote controls.

[0022] Furthermore, the first snap-fit ​​block 211 can only be inserted into the first slot 231, while the second snap-fit ​​block 221 and the third snap-fit ​​block 222 correspond to the second slot 232 and the third slot 233, respectively. These three blocks have different structures, forming a physically asymmetrical positioning mechanism. This ensures that the first contact plate 210 and the second contact plate 220 can only be installed in one correct orientation, fundamentally eliminating the risk of short circuits or equipment damage caused by reverse polarity, significantly improving safety. Simultaneously, this snap-fit ​​structure achieves a stable connection without the need for screws or other fasteners, simplifying the assembly process, improving production efficiency, and reducing maintenance costs. In addition, a battery contact assembly 240, consisting of alternating springs 241 and washers 242, is provided on the end faces of the first contact plate 210 and the second contact plate 220. This not only ensures good electrical contact with the positive and negative terminals of the battery but also absorbs vibration shocks through the elastic deformation of the springs 241, preventing loosening of the contacts and improving power supply stability. Furthermore, the battery box body 230 of this application has a first fixing block 234 on the outer side of its upper side and a second fixing block 235 on the outer side of its lower side. The first fixing block 234 and the second fixing block 235 are integrally formed with the battery box body 230. By designing the first fixing block 234 and the second fixing block 235 as an integrally formed structure with the battery box body 230, the assembly process of additional parts is avoided, assembly errors and the risk of loosening are reduced, and the mechanical strength and dimensional stability of the overall structure are improved. More importantly, as an external positioning structure, the fixing block can precisely cooperate with the first fixing groove 121 and the second fixing groove 122 inside the cavity 120 of the box body 100, realizing the axial limiting and lateral alignment of the battery box 200 within the box body 100, ensuring that it will not shift or shake during installation, thereby ensuring the accurate docking of the internal battery contact assembly 240 with the circuit system. Of course, this application does not limit the specific shape of the first fixing block 234 and the second fixing block 235. Preferably, the first fixing block 234 and the second fixing block 235 are columnar structures.

[0023] Furthermore, referring to Figure 1The electronic device that matches the battery box 200 of this application has a cavity 120. The upper side of the cavity 120 has a first fixing groove 121, and the lower side of the cavity 120 has a second fixing groove 122. A first fixing block 234 can be inserted into the first fixing groove 121, and a second fixing block 235 can be inserted into the second fixing groove 122, so that the battery box body 230 is fixed to the box body 100. This achieves a reliable embedded connection between the battery box 200 and the box body 100, effectively preventing the battery box 200 from loosening, falling off, or experiencing contact interruption due to equipment vibration, drops, or external impacts. Through the symmetrically arranged fixing grooves and fixing blocks, the battery box 200 is bidirectionally constrained in the vertical direction, forming a stable support structure, significantly improving the overall assembly rigidity and deformation resistance. Simultaneously, this insertion structure has a guiding function, guiding the battery box 200 to smoothly slide into the cavity 120 during installation, reducing manual operation difficulty and improving assembly efficiency. Further, referring to… Figure 2 The battery box body 230 has locking platforms 236 on both its left and right sides. The edges of the first contact plate 210 and the second contact plate 220 each have locking surfaces 250. The locking platforms 236 can fit against the locking surfaces 250 to fix the first contact plate 210 and the second contact plate 220 to the battery box body 230. This fit between the locking platforms 236 and the locking surfaces 250 provides lateral restraint and surface contact support between the first contact plate 210 and the second contact plate 220 and the battery box body 230, significantly enhancing the stability and reliability of their connection. The locking platforms 236 are located on the left and right sides of the battery box body 230, while the edges of the first and second contact plates 210 and 220 have corresponding locking surfaces 250. When the contact plates are installed in place, the locking platforms 236 and the locking surfaces 250 fit tightly together, forming surface contact rather than point contact. This effectively disperses stress from battery thrust or external vibration, preventing excessive local stress that could lead to structural deformation or breakage. This structure not only improves the shear resistance of the contact plate in the lateral direction, but also acts as an anti-detachment mechanism, preventing the contact plate from accidentally falling off due to elastic fatigue or impact during use. Furthermore, the engagement between the locking platform 236 and the locking surface 250 has a guiding function, helping the contact plate to be accurately aligned during assembly and improving installation accuracy. Further, referring to… Figure 3 and Figure 4The battery box body 230 has multiple latches 260 on both its upper and lower surfaces. These latches 260 can engage with the upper surfaces of the first contact plate 210 and the second contact plate 220, thus providing a secondary fixation between the first contact plate 210 and the second contact plate 220 and the battery box body 230. The multiple latches 260, located on the upper and lower surfaces of the battery box body 230 and used to engage the upper surfaces of the first contact plate 210 and the second contact plate 220, form a "secondary fixing" mechanism for the contact plates, greatly improving the connection's strength and vibration resistance. Based on the initial connection between the latching block and the slot, the latches 260 on the upper surface provide additional clamping force, preventing the contact plates from loosening, warping, or detaching due to repeated compression of the spring 241 or equipment vibration during long-term use. This secondary fixing structure achieves double locking from both the upper and lower surfaces.

[0024] Furthermore, referring to Figure 4The bottom of the battery box body 230 is provided with multiple hollow battery holders 237, and a crossbar 238 is provided between two adjacent battery holders 237. A positioning bracket 239 is provided on the crossbar 238. The multiple hollow battery holders 237 are evenly distributed along the bottom of the battery box body 230, which can accurately accommodate single or multiple batteries, ensuring that they are neatly arranged and fixed in position within the box 100, preventing rolling or misalignment. The crossbar 238 between adjacent holders 237 not only serves as structural support, enhancing the overall strength of the battery box 200, but also acts as an isolation structure between batteries, avoiding the risk of short circuits due to the conductivity of the outer shell of adjacent batteries. More importantly, the positioning bracket 239 provided on the crossbar 238 can further restrict the axial movement of the batteries, especially when the equipment is tilted or inverted, preventing the contacts from breaking due to the batteries sliding under gravity. The hollow design significantly reduces material usage and lightens the overall weight of the battery box 200, aligning with the trend towards lightweight portable electronic devices. Simultaneously, the hollowed-out area facilitates airflow, promoting heat dissipation during battery operation and preventing localized overheating that could lead to performance degradation or safety hazards. Furthermore, the battery contact assembly 240 consists of two sets, each equipped with two springs 241 and two washers 242. The springs 241 connect to the negative terminal of the battery, and the washers 242 connect to the positive terminal. By using two sets of battery contact assemblies 240, corresponding to the positive and negative terminals of the battery pack respectively, a clear current transmission path and sufficient contact area are ensured. The two springs 241 in each set create a uniform pressure distribution across the battery terminals, preventing poor contact or battery tilting due to single-point force. The dual-spring design also provides redundancy; even if one spring 241 fails due to fatigue, the other can still maintain basic conductivity, improving the system's fault tolerance. The two washers 242 can be used as conductive paths or insulating layers, allowing for flexible configuration of polarity connections according to circuit requirements. The alternating arrangement of springs 241 and washers 242 helps to adjust contact pressure and electrical paths, optimizing conductivity. Furthermore, this application does not limit the specific type of the housing 100; preferably, the housing 100 is a smart lock or a handheld remote control. The battery box 200 of this application, applied to smart locks or handheld remote controls, highlights its high adaptability and practical value in actual products. Smart locks and remote controls are typical portable electronic devices that rely on battery power, placing extremely high demands on the safety, reliability, and maintainability of the battery box 200. Of course, the housing 100 can also be an electronic device requiring batteries, such as a children's toy. Furthermore, the battery box 200 is made of insulating material. Insulating materials have advantages such as high resistivity, good heat resistance, and high mechanical strength, effectively isolating unintended conductive paths between the positive and negative terminals of the battery and between the battery and the device casing, preventing short circuits caused by accidental contact with metal conductors.

[0025] It should be noted that in the description of this utility model, any descriptions of orientation, such as up, down, front, back, left, right, etc., indicating orientation or positional relationships, are based on the orientation or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed or operated in a specific orientation, and should not be construed as a limitation of this utility model.

[0026] In the description of this utility model, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first" or "second" is mentioned, it is only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0027] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.

[0028] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. A double-layer battery case for power supply, characterized by, include: A box body (100) is provided with a start switch (110), and a cavity (120) is provided below the box body (100). An outer cover is connected to the outer end of the cavity (120). A battery box (200) is capable of being snapped into the cavity (120). The battery box (200) includes a first contact plate (210), a second contact plate (220), and a battery box body (230). The first contact plate (210) and the second contact plate (220) are respectively snapped into both sides of the battery box body (230). The bottom end of the first contact plate (210) is provided with a first snap-fit ​​block (211); the bottom end of the second contact plate (220) is provided with a second snap-fit ​​block (221) and a third snap-fit ​​block (222); battery contact assemblies (240) are provided on the end faces of both the first contact plate (210) and the second contact plate (220). The battery contact assembly (240) includes a plurality of alternately arranged springs (241) and washers (242); the bottom of the lower side of the battery box body (230) is provided with a first slot (231), the bottom of the upper side of the battery box body (230) is provided with a second slot (232) and a third slot (233), the first snap-fit ​​block (211), the second snap-fit ​​block (221) and the third snap-fit ​​block (222) can be correspondingly snapped into the first slot (231), the second slot (232) and the third slot (233) so that the first contact plate (210) and the second contact plate (220) are connected to the battery box body (230).

2. The battery case according to claim 1, wherein A first fixing block (234) is provided on the outer side of the upper side of the battery box body (230), and a second fixing block (235) is provided on the outer side of the lower side of the battery box body (230). The first fixing block (234) is integrally formed with the battery box body (230) and the second fixing block (235).

3. The battery pack of claim 2, wherein, The upper side of the cavity (120) is provided with a first fixing groove (121), and the lower side of the cavity (120) is provided with a second fixing groove (122). The first fixing block (234) can be inserted into the first fixing groove (121), and the second fixing block (235) can be inserted into the second fixing groove (122) so that the battery box body (230) is fixed to the box body (100).

4. The battery pack of claim 1, wherein, The battery box body (230) is provided with a locking platform (236) on both the left and right sides. The edges of the first contact plate (210) and the second contact plate (220) are provided with a locking surface (250). The locking platform (236) can fit against the locking surface (250) to fix the first contact plate (210) and the second contact plate (220) to the battery box body (230).

5. The battery pack of claim 4, wherein, The battery box body (230) is provided with multiple buckles (260) on both the upper and lower surfaces. The multiple buckles (260) can be engaged with the upper surfaces of the first contact plate (210) and the second contact plate (220) to fix the first contact plate (210) and the second contact plate (220) to the battery box body (230) for a secondary fixation.

6. The battery pack of claim 1, wherein, The bottom of the battery box body (230) is provided with a plurality of hollow battery placement racks (237), and a crossbar (238) is provided between two adjacent battery placement racks (237), and a positioning frame (239) is provided on the crossbar (238).

7. The battery pack of claim 1, wherein, The battery contact assembly (240) is in two sets, and each battery contact assembly (240) is provided with two springs (241) and two washers (242).

8. The battery pack of claim 1, wherein, The spring (241) is connected to the negative terminal of the battery, and the washer (242) is connected to the positive terminal of the battery.

9. The battery pack of claim 1, wherein, The box (100) is a smart lock or a handheld remote control.

10. The battery box according to claim 1, characterized in that, The battery box (200) is made of insulating material.

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