Power battery pack

Abstract

A power battery pack relates to the technical field of new energy and comprises an outer shell, the outer shell comprises a bottom plate, a front plate, a rear plate and side plates, a top cover plate is arranged at the top of the outer shell, a plurality of transverse spacing plates and longitudinal spacing plates are arranged in the outer shell, the transverse spacing plates and the longitudinal spacing plates are crossed to form a plurality of placing cavities, and the placing cavities are communicated with the front plate and the rear plate. A battery module is installed in the containing cavity, a fan is arranged on the outer side of the outer shell, and a plurality of air exchange openings are formed in the rear plate. Through forced air cooling of the fan and reasonable ventilation opening design, the working temperature of the battery cell is effectively reduced, the battery performance is improved, and the service life of the battery is prolonged. The reasonable layout of the battery collector and the battery manager and the design of the internal spacing board reduce the volume of the battery pack and improve the space utilization rate. The application of the acrylic material and the laser welding process of the battery cell tab predict that the weight is reduced by 30 kilograms, and the unsprung mass of the whole vehicle is optimized.

Description

TECHNICAL FIELD

[0001] The utility model relates to new energy technology field, specifically, relate to a kind of power battery pack. BACKGROUND

[0002] As a kind of to miniaturization, light weight and high mobility as the prominent feature of the competition and entertainment vehicle, kart to the physical properties of battery, especially volume density and weight efficiency ratio, puts extremely strict requirements.Battery not only needs to have enough energy density to support the high-strength operation of kart, also needs to realize compact layout in limited space, while keeping low self weight, to ensure that the overall performance of vehicle is not dragged.

[0003] Traditional power battery pack has many deficiencies in heat dissipation, structural layout and weight control.For example, poor heat dissipation effect can easily lead to high temperature of battery cell, affecting battery performance and life;Unreasonable structural layout can cause space waste, increase battery pack volume;Excessive weight can increase the unsprung mass of the whole vehicle, affecting the controllability and energy consumption of the vehicle.Therefore, it has important practical significance to develop a kind of power battery pack with efficient heat dissipation, compact structure and light weight. UTILITY MODEL CONTENT

[0004] The utility model aims at solving the problems in the background art, and further puts forward a kind of power battery pack.

[0005] The technical scheme adopted by the utility model to solve its technical problems is:

[0006] A kind of power battery pack, including a shell body, the shell body includes bottom plate, front plate, back plate and side plate, the top of the shell body is equipped with top cover plate, the shell body is equipped with several horizontal spacing plate and longitudinal spacing plate, the horizontal spacing plate and longitudinal spacing plate are crossed and are formed with several placing cavities, the battery module is installed in the placing cavity, the outer side of the shell body is equipped with fan, the back plate is formed with several air exchange ports.

[0007] Further, the battery module includes acrylic bottom plate, one acrylic side plate is arranged at both sides of the acrylic bottom plate, the acrylic bottom plate is formed with several positioning blocks, the electrode core is installed between adjacent positioning blocks, the electrode core is equipped with lug adapter plate on the top, the lug adapter plate is equipped with several installation slot, the electrode core lug is installed in the installation slot, and the electrode core lug is welded on the electrode core by laser.

[0008] Further, the front side of the shell body is equipped with battery collector and battery manager.

[0009] Further, the outer side of the shell body is equipped with several mounting fixing seat.

[0010] Further, the sub-alumina side plate is formed with several air vents, the air vents are matched with the positions of the positioning blocks, and the air vents are between the two electric cores.

[0011] Further, the sub-alumina side plate is formed with several air vents, the air vents are matched with the positions of the positioning blocks, and the air vents are between the two electric cores.

[0012] Compared with the prior art, the utility model discloses the beneficial effects are: the utility model discloses the forced air cooling of fan and the reasonable air vent design have reduced the working temperature of electric core effectively, have improved the performance and life of battery. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is three-dimensional structure schematic diagram of the utility model;

[0014] Figure 2 It is the top view of the utility model;

[0015] Figure 3 It is structure schematic diagram of the utility model removes the shell;

[0016] Figure 4 It is structure schematic diagram of the sub-alumina side plate;

[0017] Figure 5 It is Figure 3 It is the local enlarged view of middle A;

[0018] Wherein: 1-shell, 11-mounting fixed seat, 12-front plate, 13-side plate, 14-rear plate, 141-air exchange port, 15-bottom plate, 2-sub-alumina side plate, 21-air vent, 23-positioning block, 3-top plate, 31-sub-alumina bottom plate, 311-plug-in block, 4-fan, 51-battery collector, 52-battery manager, 6-electric core, 61-pole lug adapter plate, 101-horizontal spacing plate, 102-longitudinal spacing plate. DETAILED DESCRIPTION

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model. The present utility model will be further described with reference to the accompanying drawings and embodiments:

[0020] like Figures 1-5 As shown, a power battery pack includes an outer shell 1, the outer shell including a bottom plate 15, a front plate 12 and a rear plate 14 provided on the bottom plate, a side plate 13 provided between the front plate and the rear plate, and a top cover plate (not shown in the figure) provided on the top of the outer shell.

[0021] The outer casing is provided with a plurality of horizontal partitions 101 and vertical partitions 102. The horizontal partitions and vertical partitions intersect to form a plurality of placement cavities. A battery module is installed in the placement cavity. A fan 4 is provided on the outside of the outer casing to provide forced air cooling for the battery module, resulting in good heat dissipation of the battery cell.

[0022] This layout allows for a more organized distribution of battery modules within the battery pack, facilitating management and maintenance. Simultaneously, the spacers also strengthen the outer casing structure, improving the battery pack's vibration resistance.

[0023] Furthermore, the fan is mounted on the rear panel, which has a plurality of air vents 141.

[0024] When the fan is working, it introduces cool air from outside into the battery pack through the air vents. The cool air flows in the storage chamber, carrying away the heat generated by the battery cells, and then is exhausted through other vents, thus achieving a highly efficient heat dissipation effect.

[0025] The battery module includes an acrylic base plate 31, with an acrylic side plate 2 on each side of the base plate. Several positioning blocks 23 are formed on the base plate, and battery cells 6 are installed between adjacent positioning blocks. A tab adapter plate 61 is provided on the top of each battery cell, and the tab adapter plate has several mounting slots. Battery cell tabs are installed at these slots. The battery cell tabs are laser-welded to the battery cells, resulting in low internal resistance and eliminating the weight of bolted connections. A top plate 3 is located between two acrylic side plates, above the tab adapter plate.

[0026] Further, the front side of the outer shell is provided with a battery collector 51 and a battery manager 52, which layout makes the structure of the battery pack more compact, the space utilization is significantly improved, thereby reducing the volume of the battery pack, which is beneficial to the space layout of the whole vehicle. The battery collector is responsible for collecting the voltage, current and other information of the battery cell, and the battery manager manages and controls the battery according to the collected information to ensure the safe and efficient operation of the battery. Arranging the two components on the front side of the outer shell facilitates electrical connection with the battery module, reducing the length and complexity of the circuit.

[0027] Further, the outer side of the outer shell is provided with a plurality of mounting fixing seats 11.

[0028] Further, a plurality of ventilation openings 21 are formed on the acrylic side plate, which are matched with the positions of the positioning blocks, and the ventilation openings are between two battery cells. With the action of the fan, cold air can be directly blown to the battery cells through the ventilation openings, thereby enhancing the heat dissipation effect.

[0029] Further, the acrylic bottom plate is formed with a plug-in block 311, and the acrylic side plate is formed with a slot for accommodating the plug-in block.

[0030] In the actual production process, first, according to the design requirements, the various components of the outer shell are made, including the bottom plate, the front plate, the rear plate, the side plate and the top cover plate. The transverse spacing plate and the longitudinal spacing plate are installed in the outer shell to form a placing cavity. Then, the acrylic bottom plate, the acrylic side plate and the top plate of the battery module are made, the positioning blocks and the plug-in blocks are processed on the acrylic bottom plate, and the ventilation openings and the slots are processed on the acrylic side plate. The battery cells are installed between adjacent positioning blocks, the battery cell tabs are welded on the tab adapter plate by laser welding, and the tab adapter plate is installed on the top of the battery cell. The assembled battery module is inserted into the placing cavity, then the battery collector and the battery manager are installed on the front side of the outer shell, and the fan and the mounting fixing seat are installed on the outer side of the outer shell. Finally, the top cover plate is installed, and the assembly of the power battery pack is completed.

[0031] The basic principle, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above embodiments, and the above embodiments and descriptions in the specification are only to illustrate the principles of the present application. Without departing from the spirit and scope of the present application, various changes and improvements can be made to the present application, and these changes and improvements all fall within the scope of the present application. The scope of protection of the present application is defined by the appended claims and their equivalents.

Claims

1. A power battery pack, characterized in that, The utility model relates to a battery module, including a shell body, the shell body includes bottom plate, front plate, back plate and side plate, the shell body top is equipped with top cover plate, be equipped with a plurality of transverse spacing plate and longitudinal spacing plate in the shell body, a plurality of placement cavities are formed to the transverse spacing plate and longitudinal spacing plate intersection, install battery module in the placement cavity, the shell body outside is equipped with fan, form a plurality of air exchange port on the back plate.

2. The power battery pack of claim 1, wherein, The battery module includes an acrylic bottom plate, each side of the acrylic bottom plate is equipped with an acrylic side plate, a plurality of positioning blocks are formed on the acrylic bottom plate, a plurality of battery cells are installed between adjacent positioning blocks, a plurality of the battery cell top is equipped with a tab adapter, a plurality of installation slots are formed on the tab adapter, a plurality of battery cell tabs are installed in the installation slots, and the battery cell tabs are welded on the battery cells by laser welding.

3. The power battery pack according to claim 1 or 2, characterized in that, The front side of the shell body is equipped with a battery collector and a battery manager.

4. The power battery pack of claim 1, wherein, The outer side of the shell body is equipped with a plurality of installation fixing seats.

5. The power battery pack of claim 2, wherein, A plurality of air vents are formed on the acrylic side plate, the positions of the air vents are matched with the positions of the positioning blocks, and the air vents are between two battery cells.

6. The power battery pack of claim 5, wherein, A plurality of plug-in blocks are formed on the acrylic bottom plate, and a plurality of plug-in slots are formed on the acrylic side plate to accommodate the plug-in blocks.

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