Train tail battery with stable structure

Abstract

The utility model relates to a train tail battery with a stable structure, which comprises a shell and a battery module, the shell is a cylinder which is composed of a bottom shell and an upper cover detachably connected to the bottom shell, the cross section of the cylinder is triangular, the cylinder is provided with an accommodating space matched with the battery module, the battery module is arranged in the accommodating space, and the battery module is arranged in the accommodating space. The battery module is of a triangular cylinder structure formed by arranging a plurality of cylindrical battery cells into a triangle, and a connecting piece connected with the battery module is arranged on the outer side face of the bottom of the shell. The battery cells of the train tail battery are arranged in a triangular shape, gaps among the battery cells are small, compared with rectangular or square arrangement, space is saved, the size of a battery shell can be reduced, space layout optimization of a train tail main machine is facilitated, and the battery cells arranged in the triangular shape are arranged in a convex-concave staggered mode and tightly attached to each other to form a resultant force supporting effect. The possibility that the train tail battery is impacted or vibrated to shake and shift in the using process is reduced, and the structural stability of the train tail battery is improved.

Description

A structurally robust tail-end battery Technical Field

[0001] This utility model relates to a tail-end battery, and more particularly to a structurally robust tail-end battery. Background Technology

[0002] The primary function of the tail-end battery is to provide power to the tail-end device, ensuring its normal operation. Since the tail-end battery is installed within the tail-end device, a safety device mounted at the rear of railway trains, it experiences significant vibration and impact during use. Existing tail-end batteries use straps to bundle multiple cells together to prevent loosening, then spot-weld the cells to nickel strips, connect them to a circuit board via wires, and finally encapsulate them in a battery casing. This structure results in a loose fit between the battery module and the inner wall of the casing, making the structure unstable. Under vibration and impact, the battery module can wobble and the cells can shift, causing the nickel strip solder joints to detach and the circuit board connections to loosen, leading to power outages and affecting the reliability of the battery's power supply.

[0003] In addition, currently, the cells of the tail battery are arranged in a rectangular or square shape inside the battery casing. This arrangement results in large gaps between the cells and occupies a lot of space in the battery casing. The space for installing the tail battery on the tail host is limited, and using the above-mentioned tail battery is not conducive to optimizing the space layout of the tail host. Summary of the Invention

[0004] In order to solve the problems and defects existing in the above-mentioned background technology, this utility model provides a structurally stable tail battery.

[0005] To achieve the above objectives, this utility model provides a structurally robust tail battery, comprising a housing and a battery module. The housing is a column with a triangular cross-section and an accommodating space that matches the battery module, consisting of a bottom shell and a top cover detachably connected to the bottom shell. The battery module is disposed in the accommodating space and is a triangular prism structure formed by arranging several cylindrical cells in a triangle. A connecting piece for connecting the battery module is provided on the bottom outer side of the housing.

[0006] Furthermore, the bottom shell is divided into a battery compartment and a component compartment by a horizontally arranged partition, and the battery module is disposed in the battery compartment.

[0007] Furthermore, a switch is provided at one end of the housing and a connecting plate is provided at the other end. The switch is embedded in the component compartment, with its operating end facing the outside of the housing. The switch is connected to the battery module via a wire to control the positive output of the battery module. A wire groove is provided on the partition plate for the wire to pass through.

[0008] Furthermore, a conductive sheet and a support block connected to the connecting piece are provided inside the battery compartment. The conductive sheet is inserted into the bottom plate of the bottom shell and is connected to the battery module through a wire. The support block is fixed to the bottom plate of the bottom shell.

[0009] Furthermore, both the connecting piece and the conductive piece are nickel-plated metal pieces, and the connecting piece includes a positive electrode contact, a negative electrode contact, and a communication contact.

[0010] Furthermore, the battery at the end of the above-mentioned technical solution includes two battery modules, which are embedded end-to-end in the battery compartment. A circuit board is disposed below the two battery modules, and a buffer insulating pad is disposed between the circuit board and the bottom plate of the battery compartment.

[0011] Furthermore, the battery module also includes a battery frame and a conductive nickel strip. The housing frame is disposed at both ends of the battery cell, and the two ends of the battery cell are respectively embedded in the corresponding housing frame. The conductive nickel strip is disposed at both ends of the battery module and is fixedly connected to the electrode of each battery cell. The bottom of each conductive electrode extends out of the corresponding housing frame and is connected to the corresponding contact point of the circuit board.

[0012] Furthermore, the cross-section of the receiving frame is a triangle with rounded corners, and its bottom is provided with a receiving groove adapted to the circuit board.

[0013] Furthermore, the aforementioned accommodating frame, limiting plate, and fixing plate include a slot on the inner side of the slot frame that is compatible with the battery cell, and a fixing plate fixedly connected to its outer side. The three fixing plates are fixed to the outer side of the slot frame to form a triangle. The limiting plate is fixedly connected to one end of the slot frame to limit the battery cell. An opening groove is provided at the bottom of the slot frame at the end located on the limiting plate for the lead end of the nickel strip to pass through.

[0014] Furthermore, all corners of the shell are rounded.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] 1. The battery cells of this utility model are arranged in a triangular pattern with small gaps between each cell. Compared with rectangular or square arrangements, this saves space and reduces the volume of the battery casing. This is beneficial for optimizing the spatial layout of the battery cell unit. Furthermore, the triangular arrangement of the cells with alternating convex and concave shapes creates a strong supporting effect, reducing the possibility of the battery shaking or shifting due to impacts or vibrations during use. This improves the stability of the battery structure and meets the needs of use.

[0017] 2. The battery module and components of this utility model are respectively embedded in the battery compartment and the component compartment. Through the cooperation of the battery compartment, the component compartment and the shell, the battery module and components can be limited to prevent them from shaking and displacement when subjected to vibration and impact during use, thereby improving the structural stability and power supply reliability of the battery.

[0018] 3. The bottom of the battery at the end of the column is provided with a connecting piece for contact and connection with the contact point of the main unit at the end of the column. This facilitates the connection with the contact point of the main unit and ensures that even if the battery shifts due to vibration or impact during use, it will not detach from the contact point of the main unit, thus improving the stability of the connection and ensuring the stability and reliability of the power supply. Furthermore, this connection method replaces the traditional method of connecting the battery module to the main unit via wires and sockets, reducing wiring within the battery casing. Wiring is simpler and more direct, and the connection between the battery module and the battery bottom casing is tighter, which helps to reduce the size of the battery casing.

[0019] 4. The battery module of this utility model, by embedding the battery cells into the housing frame, ensures that the battery cells will not loosen or shift during use, guaranteeing the reliability of the connection between the battery cells and the nickel strip. Furthermore, the lead-out end of the nickel strip mates with the opening slot of the housing frame, limiting its position and ensuring its stability, preventing displacement and ensuring the firmness of each solder joint. In addition, the housing frame allows the battery module to fit better against the inner wall of the casing, ensuring a tight fit and eliminating space for shaking or shifting. This prevents the battery module and circuit board from shaking or shifting during use, improving the stability and power supply reliability of the battery module of this utility model.

[0020] 5. The battery at the end of the column in this utility model is equipped with a connecting plate, which facilitates the connection between the battery at the end of the column and the main unit at the end of the column, and avoids the risk of the battery falling out of the battery compartment of the main unit at the end of the column during use, thereby improving its safety. Attached Figure Description

[0021] The accompanying drawings, which form part of this specification and serve to further illustrate the preferred embodiments of the present invention, and together with the specification, serve to explain the principles of the present invention. In the drawings:

[0022] Figure 1 is a structural schematic diagram of the tail battery of this utility model from one perspective;

[0023] Figure 2 is a structural schematic diagram of the tail battery in Figure 1 from another perspective;

[0024] Figure 3 is an exploded structural diagram of the tail battery of this utility model;

[0025] Figure 4 is an exploded view of the battery module of the tail battery of this utility model.

[0026] The numbers in the diagram represent the following meanings: 100, shell; 110, bottom shell; 111, connecting strip; 120, top cover; 121, connecting block.

[0027] 200. Battery module; 210. Battery cell; 220. Housing frame; 221. Positioning frame; 222. Fixing plate; 223. Limiting plate; 224. Positioning slot; 230. Nickel strip; 240. Circuit board; 250. Through hole; 260. Opening slot; 270. Housing slot; 280. Buffer insulation pad.

[0028] 300, connecting piece; 400, connecting plate; 410, connecting hole; 500, support block; 600, conductive sheet; 700, partition plate; 800, wire channel;

[0029] A. Battery compartment, B. Component compartment. Detailed Implementation

[0030] The embodiments of the present invention will be described in detail below with reference to the accompanying drawings. However, the present invention can be implemented in many different ways as defined and covered by the claims.

[0031] As shown in Figures 1, 2, and 3, a structurally robust tail-end battery according to this embodiment includes a housing 100 and a battery module 200. The housing 100 has a triangular cross-section, with all three corners rounded. In this embodiment, the housing 100 includes a bottom shell 110 and a top cover 120. The top cover 120 is detachably connected to a column on the bottom shell 110, which has an accommodating space for the battery module 200. In other words, the housing 100 is a hollow triangular prism. The battery module 200 is disposed within the accommodating space. The battery module 200 has a triangular prism structure and includes a plurality of cylindrical cells 210 arranged in a triangle. The triangularly arranged cells 210 are set inside the housing 100, which saves space compared to rectangular or square arrangements, reduces the volume of the battery housing, and is conducive to optimizing the spatial layout of the main unit at the end of the column. Moreover, the triangularly arranged cells 210 are arranged with alternating protrusions and concavities, and are closely attached to each other to form a combined support effect, which reduces the possibility of the battery shaking and shifting due to impact or vibration during use, and improves the stability and safety of the battery.

[0032] In this embodiment, to facilitate connection with the tail-end host, as shown in Figure 1, a connecting piece 300 for connecting to the battery module 200 is provided on the bottom outer side of the housing 100. This connection method, using the connecting piece to contact the tail-end host, facilitates connection while ensuring that even if the battery shifts due to vibration or impact during use, the connecting piece, with its area, will not detach from the tail-end host's contacts. This improves connection stability and ensures stable and reliable power supply. Both the connecting piece 300 and the conductive piece 600 are nickel-plated metal sheets. The connecting piece 300 includes a positive terminal contact, a negative terminal contact, and a communication contact.

[0033] In this embodiment, the bottom shell 110 is divided into a battery compartment A and a component compartment B by a horizontally arranged partition 700, and the battery module 200 is disposed in the battery compartment A. A switch (not shown in the figure) is provided at one end of the shell 100, and a connecting plate 400 is provided at the other end. A connecting hole 410 is provided on the connecting plate. The connecting plate 400 facilitates connection with the main battery compartment at the end of the column, preventing the battery at the end of the column from sliding out of the main battery compartment during use and improving safety. The connecting plate 400 is divided into an upper connecting plate and a lower connecting plate. The upper connecting plate is fixedly connected to one end of the upper cover 120, and the lower connecting plate is fixedly connected to one end of the bottom shell 110. The switch is a toggle switch, which is embedded in the component compartment B, with its operating end facing the outside of the shell 100. The switch is connected to the battery module 200 through a wire to control the positive output of the battery module 200. A wire groove 800 is provided on the partition 700 for the wire to pass through. The partition 700 is designed to limit the movement of the switch and the battery module 200.

[0034] Furthermore, a conductive sheet 600 and a support block 500 connected to the connecting piece 300 are provided in the battery compartment A. The conductive sheet 600 is inserted into the bottom plate of the bottom shell 110 and is connected to the battery module 200 via wires, specifically to the circuit board 240 of the battery module 200. The support block 500 is L-shaped, and in this embodiment, four support blocks 500 are provided, which are fixed to the bottom plate of the bottom shell 110. The connecting piece 300 and the conductive sheet 600 are fixedly connected by welding. Both are galvanized metal sheets. An insertion slot adapted to the conductive sheet 600 is opened on the bottom plate of the bottom shell 110. The upper end of the conductive sheet 600 passes through the insertion slot, extends into the bottom shell 110, and is bent. This design replaces the traditional method of connecting the battery module to the main unit of the battery pack via wires and sockets in the end-of-line battery. This reduces the wiring inside the battery shell, making the wiring simple and direct, and makes the battery module and the battery bottom shell more compact, which is beneficial for reducing the size of the battery shell.

[0035] Referring to Figures 3 and 4, the battery at the end of the above technical solution uses two battery modules 200 connected in series. The two battery modules 200 are embedded end-to-end in the battery compartment A. A circuit board 240 is arranged below the two battery modules 200. A buffer insulating pad 280 is arranged between the circuit board 240 and the bottom plate of the battery compartment A to reduce the impact of vibration on the battery modules. The battery module 200 also includes a housing frame 220 and a conductive nickel strip 230. The housing frame 220 is arranged at both ends of the cell 210. The cell 210 is a cylindrical lithium-ion cell. The two ends of the cell 210 are respectively embedded in the corresponding housing frame 220. The conductive nickel strip 230 is arranged at both ends of the battery module 200 and is fixedly connected to the electrode of each cell 210 by spot welding. The bottom of the lead of each conductive nickel strip 230 extends out of the corresponding housing frame 220 and connects to the corresponding contact point of the circuit board 240.

[0036] In this embodiment, as shown in FIG3, the cross-section of the housing 220 is a triangle with rounded corners, and the bottom is provided with a housing groove 270 adapted to the circuit board 240. The circuit board is placed in the housing groove, which not only saves space and makes the distance between the battery cell and the circuit board smaller, which is conducive to the connection of the nickel strip, but also plays a role in limiting and protecting the circuit board, so that the circuit board will not be displaced and the reliability of the connection between the nickel strip and the circuit board is guaranteed.

[0037] The housing frame 220 includes a positioning frame 221, a limiting plate 223, and a fixing plate 222. The inner side of the positioning frame 221 has a positioning slot 224 adapted to the battery cell 210, and the outer side is fixedly connected to the fixing plate 222. The fixing plate 222 is fixed to the outer side of the positioning frame 221 and is integrally formed with the positioning frame 221. The fixing plate 222 acts as a reinforcing rib, which not only improves the strength of the positioning frame 221 and provides a foundation for ensuring the stability of the battery cell, but also facilitates the fit between the housing frame and the shell, ensuring a close fit and thus guaranteeing the stability of this invention. In addition, the gap between the positioning frame 221 and the fixing plate 222 not only reduces its weight, which is beneficial to the lightweight design of the battery at the end of the series, but also saves materials and reduces battery processing costs. The battery cell 210 is embedded in the slot 224 and its lateral position is limited. Three fixing plates 222 are fixed to the outside of the slot frame 221 to form a triangle. The limiting plate 223 is fixedly connected to one end of the slot frame 221 to limit the position of the battery cell 210. The limiting plate 223 limits the longitudinal position of the battery cell 210 to prevent the battery cell 210 from shifting during use and thus preventing it from detaching from the nickel strip 230. An opening slot 260 is provided at the bottom of one end of the positioning bracket 221 located at the limiting plate 223, through which the lead end of the nickel strip 230 passes. The opening slot 260 not only meets the connection requirements between the nickel strip 230 and the circuit board 240, but also limits the lead end of the nickel strip 230, thus preventing the nickel strip from shifting. The housing bracket 220 not only prevents the multiple cells 210 from becoming loose, but also limits them laterally and longitudinally, thereby ensuring that the nickel strip solder joints do not detach and ensuring the firmness of the nickel strip connection. A through hole 250 is provided on the circuit board 240 for the lead end of the nickel strip 230 to pass through, thereby facilitating the connection between the nickel strip and the circuit board.

[0038] In this embodiment, a connecting block 121 is fixedly connected to the outer side of the upper cover 120, and the connecting block is provided with a connecting threaded hole. A connecting strip 111 is provided on the outer side of the bottom shell 110 corresponding to the connecting block 121, and a through hole is provided on the connecting strip 111. The upper cover 120 and the bottom shell 110 are detachably connected by the connecting strip 111 and screws installed in the mounting block. To ensure the stability of the connection, convex and concave surfaces are respectively provided on the connecting surfaces of the upper cover 120 and the bottom shell 110. In other embodiments of this utility model (not shown), a BOSS post can also be provided on the inner wall of the upper cover 120. Similarly, a BOSS post is also provided at a corresponding position inside the bottom shell 110. The bottom shell 110 and the upper cover 120 are connected by screws installed in the BOSS post.

[0039] In other embodiments of this utility model (not shown in the figures), a retaining ring is provided on the top of the inner wall of the upper cover 120 corresponding to the receiving frame 220. The retaining ring is engaged with the receiving frame 220 to further limit the battery module and improve the structural stability of the battery at the end of the column of this utility model.

[0040] This utility model's tail-end battery, by arranging the cells in a triangle, improves the stability between the cells and saves space occupied by the cells in the casing. This not only improves the stability of the battery structure but also optimizes the spatial layout of the tail-end host unit. The inclusion of a housing frame prevents the cells in the battery module from loosening due to vibration and impact, further enhancing its structural stability.

[0041] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A structurally robust tail battery comprising a housing and a battery module, characterized in that, The housing is a column with a triangular cross-section and an accommodating space for the battery module, consisting of a bottom shell and a top cover detachably connected to the bottom shell. The battery module is disposed in the accommodating space and is a triangular prism structure formed by arranging several cylindrical cells in a triangle. A connecting piece for connecting the battery module is provided on the bottom outer side of the housing.

2. The structurally robust tail-end battery according to claim 1, characterized in that, The bottom shell is divided into a battery compartment and a component compartment by a horizontally arranged partition, and the battery module is disposed in the battery compartment.

3. The structurally robust tail-end battery according to claim 2, characterized in that, A switch is provided at one end of the housing and a connecting plate is provided at the other end. The switch is embedded in the component compartment and its operating end faces the outside of the housing. The switch is connected to the battery module through a wire to control the positive output of the battery module. A wire groove is provided on the partition plate for the wire to pass through.

4. The structurally robust tail-end battery according to claim 2, characterized in that, The battery compartment is provided with a conductive sheet and a support block that are connected to the connecting piece. The conductive sheet is inserted into the bottom plate of the bottom shell and is connected to the battery module through a wire. The support block is fixed to the bottom plate of the bottom shell.

5. The structurally robust tail-end battery according to claim 4, characterized in that, The connecting piece and conductive piece are both nickel-plated metal pieces, and the connecting piece includes a positive electrode contact piece, a negative electrode contact piece, and a communication contact piece.

6. The structurally robust trail end cell of claim 2, wherein, The battery at the end of the column includes two battery modules, which are embedded in the battery compartment end to end. A circuit board is provided below the two battery modules, and a buffer insulating pad is provided between the circuit board and the bottom plate of the battery compartment.

7. The structurally robust tail-end battery according to claim 6, characterized in that, The battery module further includes a housing frame and a conductive nickel strip. The housing frame is disposed at both ends of the battery cell, and the two ends of the battery cell are respectively embedded in the corresponding housing frame. The conductive nickel strip is disposed at both ends of the battery module and is fixedly connected to the electrode of each battery cell. The lead end of each conductive nickel strip extends out of the corresponding housing frame and connects to the corresponding contact point of the circuit board.

8. The structurally robust trail end cell of claim 7, wherein, The cross-section of the accommodating frame is a triangle with rounded corners, and its bottom is provided with an accommodating groove adapted to the circuit board.

9. The structurally robust trail end cell of claim 8, wherein, The housing includes a slotting frame, a limiting plate, and a fixing plate. The slotting frame has a slot on its inner side that is compatible with the battery cell, and a fixing plate is fixedly connected to its outer side. The three fixing plates are fixed to the outer side of the slotting frame to form a triangle. The limiting plate is fixedly connected to one end of the slotting frame to limit the position of the battery cell. An opening groove is provided at the bottom of the slotting frame at the end located on the limiting plate for the lead end of the nickel strip to pass through.

10. The structurally robust trail end cell of claim 1, wherein, All corners of the shell are rounded.

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