Battery module

Abstract

The utility model discloses a battery module, which is characterized in that bridging copper bars are adopted in the battery module for connection, and fuse protectors are adopted among modules for connection, so that on the premise of improving the overall space utilization rate of the battery module and the energy density of a battery pack, the battery module can be disconnected in time under the condition of short circuit or overheating in the battery module; the overall electric safety of the battery module is ensured, and the requirements of high energy density and rate capability of the electric motorcycle are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to battery technology field, concretely relates to a battery module. BACKGROUND

[0002] With the development of new energy field technology and application, and the current international situation changes, new energy battery is concerned and has great market prospect. In the prior art, the power density and discharge rate of the battery pack are relatively low, but for the lightweight electric motorcycle, the power density and rate performance of the battery pack are required to be higher.

[0003] In the prior art, the battery pack of the electric motorcycle is mostly of a special-shaped structure due to the overall arrangement, and the cylindrical battery is usually used on the electric motorcycle due to its flexibility in arrangement, but the cylindrical battery has low energy density and is difficult to meet the high energy density and rate performance requirements of the electric motorcycle. At the same time, the welding area of the tab of the cylindrical battery is small, and it is difficult to ensure the reliability of the battery connection. The overall battery pack is a high-voltage device, and it is also difficult to ensure the absolute insulation of the battery pack during the working process of the battery pack. When a micro-short circuit occurs in the battery pack, the electrical safety of the overall battery pack cannot be guaranteed, which may damage the overall battery pack, and may even pose a threat to the life and property safety of the rider. SUMMARY

[0004] In view of the technical problems in the background art, the purpose of the utility model is to provide a battery module. It comprises a battery module, a connecting copper bar, an aluminum bar, a fuse, a Pcb sampling plate, a tab support and a battery. The battery module is composed of four small modules, and there is a large gap between the four small modules. The four modules are arranged with positive and negative poles on different sides. The input and output ends of each small module are connected by an aluminum bar. The first module and the second module, the third module and the fourth module are connected by a copper bar. The entire battery module is connected by a fuse. The tab support is integrally designed with the sampling plate frame, and has a polygonal recess inside. The battery module is composed of a plurality of batteries connected in series and parallel.

[0005] Preferably, the connecting copper bar is designed with a bending in the length direction.

[0006] Preferably, a notch is provided between the copper bar connecting parts of the connecting copper bar.

[0007] Preferably, the aluminum bar is designed with a bending in the long side.

[0008] The battery module sampling plate is fixed on the tab support by screw connection, the plate is provided with tab holes, the aluminum bar is fixed on the pcb sampling plate by welding, and the battery tabs are welded on the aluminum bar by lap welding after passing through the tab support and the pcb sampling plate,

[0009] Preferably, two notches are left on the two sides of the long side of the pcb sampling sampling plate.

[0010] Preferably, the battery module single battery tab is separated by buffer foam.

[0011] Preferably, insulating heat-conducting sheets are arranged around and at the bottom of the battery module.

[0012] Preferably, uniformly distributed tab holes are designed on the tab support, and reinforcing ribs are arranged inside, and screw holes are arranged on the support at the positions of the transverse reinforcing ribs and the longitudinal reinforcing ribs.

[0013] Compared with the prior art, the battery module is composed of four small modules arranged from left to right and having the positive and negative poles of adjacent modules on the same side, facilitating the connection of the modules, the first and second modules and the third and fourth modules are connected by jumper copper bars, the overall overcurrent capacity of the battery module is improved, the edge of the copper bar is designed to be bent, the overall height of the battery module is reduced, and the volume energy density of the battery module is improved. The second module and the third module are connected by a fuse, which can be disconnected in time in case of short circuit or overheating in the battery module, ensuring the electrical safety of the overall battery module. The four small modules in the battery module are composed of single batteries, tab supports, pcb boards and the like, the tab positions between adjacent single batteries are separated by buffer foam, the battery tabs are welded on the aluminum bar after passing through the tab support and the pcb board, the single batteries and the electrical connection are separated as a whole, the insulation of the battery module is further improved, the battery connection aluminum bar is fixed on the pcb board by welding, the connection stability and reliability of the battery module are improved, and the structural strength of the battery module is improved. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 The battery module structure diagram of the utility model

[0015] Figure 2 The battery module explosion diagram of the utility model

[0016] Main component symbol explanation: 1, module, 2, connection copper bar, 3, aluminum bar, 100, pcb sampling plate, 200, tab support, 300, buffer foam, 400, insulating heat-conducting sheet, 500, battery. SPECIFIC EMBODIMENTS

[0017] The application will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0018] As shown in the drawings, the application provides a battery module and a battery, comprising: a battery module, a connecting copper bar, an aluminum bar, a fuse, a pcb sampling plate, and a tab support. The battery module is composed of four small modules, and a large gap is left between the four small modules. The four modules are arranged on the opposite sides of the positive and negative electrodes. The input and output ends of each small module are connected by an aluminum bar. The first and second modules and the third and fourth modules are connected by a copper bar. The entire battery module is connected by a fuse. The tab support is integrally designed with the sampling plate frame, and a polygonal groove is arranged inside.

[0019] In this embodiment, the battery module is composed of four small modules, which are the first module, the second module, the third module, and the fourth module from left to right. A large gap is left between the four small modules to prevent the generation of arc in the circuit and improve the overall insulation performance of the battery module. The four modules are arranged on the opposite sides of the positive and negative electrodes to improve the assembly efficiency of the battery module. The first and second modules and the third and fourth modules are connected by a copper bar. The second and third modules are connected by a fuse, which can disconnect the electrical connection of the modules in the case of abnormal conditions such as overcurrent or overheating of the entire battery module, ensuring the electrical safety of the battery module.

[0020] In this embodiment, the connecting copper bar 2 is designed with a bending in the length direction, which reduces the overall height of the battery module and improves the space utilization of the battery module while ensuring the overcurrent capacity. The gap between the copper bar connection parts improves the electrical connection position of the battery module, further improving the insulation with the modules. The design similar to the reinforcing rib can improve the structural strength of the copper bar, further improving the reliability of the electrical connection.

[0021] In this embodiment, the aluminum bar 3 is used to connect the input and output ends of each small module of the battery module. The aluminum bar is designed with a bending on the long side, which transfers the electrical connection position to the inside. On the premise of ensuring the overall overcurrent capacity of the battery module, the gap between the battery modules is ensured, and the electrical safety of the battery module itself is improved.

[0022] The fuse 4 is used to connect the entire battery module at the middle position, which can disconnect the circuit in the case of abnormal conditions such as overcurrent or overheating, ensuring the electrical safety of the entire battery module. At the same time, the circuit can be disconnected during the transportation and static storage of the battery module, ensuring the high-voltage safety of the battery module and reducing the power consumption of the battery module and other devices.

[0023] In the embodiment, the pcb sampling plate 100: the battery module sampling plate is fixed on the tab support by screw connection, and the tab hole is arranged on the plate, the size of the tab hole is larger than that of the hole of the tab support, the aluminum row is fixed on the pcb sampling plate by welding, the battery tab is welded on the aluminum row by lap welding after passing through the tab support and the pcb sampling plate, and two notches are arranged on the long side of the pcb sampling plate, and the notches are used for wiring of the battery module temperature sampling line. The pcb sampling plate arranges the sampling line bundle in the plate, the sampling data connector is arranged at the center position, data is output through the connector, and the insulation performance of the whole battery module can be effectively improved.

[0024] In the embodiment, the tab support 200: the battery monomer is composed of a module in a series-parallel mode, the tab support is integrally designed with the sampling plate frame, the polygonal groove is arranged in the tab support, the shoulder of the monomer battery is fixed, the battery is prevented from moving and being damaged, the tab holes are uniformly arranged on the support, the horizontal reinforcing ribs are arranged in the support, the structural strength of the support is improved, more fixing positions are provided for the pcb sampling plate, screw holes are arranged on the horizontal reinforcing ribs and the vertical reinforcing ribs of the support, and the pcb sampling plate and the tab support are connected and fixed.

[0025] In the embodiment, the buffer foam cotton 300: the buffer foam cotton is used to separate the tab of each battery monomer of the battery module, the insulation between the batteries is improved, the buffer is provided for the battery in the case of vibration of the battery module, and the tab is prevented from being damaged.

[0026] In the embodiment, the insulating heat-conducting sheet 400: the insulating heat-conducting sheet is arranged between the monomer batteries, around the module, and at the bottom, the insulation between the monomer batteries and the whole module is improved, the heat in the battery is conducted out when the battery module works, and the battery module is ensured to work in a suitable temperature range through heat exchange of the liquid cooling plate.

[0027] In the embodiment, the battery 500: a plurality of batteries are composed of a module in a series-parallel mode, the battery body is fixed by using the tab support, the tab is welded on the aluminum row after passing through the tab support and the pcb sampling plate, the insulation between the batteries is further improved, and the fixation of the battery is strengthened.

[0028] Although the utility model is specifically shown and introduced in combination with the preferred embodiments, those skilled in the art should understand that various changes can be made to the utility model in form and details without departing from the spirit and scope of the utility model defined in the appended claims, and all the changes are within the protection scope of the utility model.

Claims

1. A battery module comprising: Battery module, connecting copper bar, aluminum bar, fuse, pcb sampling plate, tab support and battery, characterized in that: the battery module is composed of four small modules, and gaps are left between the four small modules, the four modules are arranged with positive and negative poles on different sides, the input and output ends of each small module are connected by aluminum bars, the first module and the second module, the third module and the fourth module are connected by copper bars, the entire battery module is connected by fuses, the tab support is integrally designed with the sampling plate frame, and a polygonal groove is arranged in the interior, and the battery module is composed of a plurality of batteries in a series-parallel connection mode.

2. The battery module of claim 1, wherein: The connecting copper bar is designed with a bending in the length direction.

3. The battery module of claim 1, wherein: A gap is arranged between the copper bar connecting parts.

4. The battery module of claim 1, wherein: The aluminum bar is designed with a bending on the long side.

5. The battery module of claim 1, wherein: The battery module sampling plate is fixed on the tab support by screw connection, and the tab holes are arranged on the plate, the aluminum bar is fixed on the pcb sampling plate by welding, and the battery tabs are connected in series and parallel on the aluminum bar by lap welding after passing through the tab support and the pcb sampling plate.

6. The battery module of claim 1, wherein: Two gaps are left on the two sides of the long side of the pcb sampling plate.

7. The battery module of claim 1, wherein: The tab supports of the battery module are separated by buffer foam.

8. The battery module of claim 1, wherein: Insulating heat-conducting sheets are arranged around the module and at the bottom.

9. The battery module of claim 1, wherein: Uniformly distributed tab holes are designed on the tab support, and reinforcing ribs are arranged in the interior, and screw holes are arranged on the support at the positions of the transverse reinforcing ribs and the longitudinal reinforcing ribs.

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