Device for heat dissipation of battery pack

Abstract

The utility model relates to the technical field of battery heat dissipation, in particular to a device for heat dissipation of a battery pack, which comprises a container shell, four battery placing stations are sequentially arranged in the container shell from left to right, and air exhaust heat dissipation elements fixed at the bottom of the container shell are arranged at the lower ends of the battery placing stations. The air exhaust and heat dissipation elements blow air towards the battery placement stations, a battery temperature detection device fixed to the side wall of the container shell is arranged on one side of each battery placement station, and the battery temperature detection devices abut against the surfaces of the battery packs through patch type temperature sensors to measure the temperature of the outer surfaces of the battery packs.

Description

Technical Field

[0001] The utility model relates to the technical field of battery heat dissipation, in particular to a device for dissipating heat from a battery pack. Background Art

[0002] A PACK production line is a production line specifically used for assembling and packaging battery cells (such as lithium batteries). It refers to combining individual battery cells or battery modules into a larger battery pack, which is typically used in applications such as electric vehicles, power tools, and energy storage systems. The purpose of the PACK production line is to ensure the performance, safety, and reliability of the battery pack while improving production efficiency. Among them, the thermal management system is an important component of the PACK production line, especially in the manufacture of lithium batteries. Since the battery generates heat during the charging and discharging process, if the heat cannot be effectively dissipated, it may lead to a decline in battery performance, a shortened lifespan, and even safety issues. Therefore, the design of the thermal management system is crucial.

[0003] Currently, a Chinese patent with publication number CN207690965U discloses a battery heat dissipation device. It includes multiple groups of small battery cells stacked together by positive electrodes, negative electrodes, and separators. Spacer heat sinks are inserted between the small battery cells. The spacer heat sinks are connected to side heat sinks placed on both sides of the battery. The battery heat dissipation device effectively dissipates heat by directing heat between the batteries to the outside of the battery. When the battery operates at a high current density, the temperature of the battery cells will rise rapidly. The spacer heat sinks will quickly absorb the heat released by the battery cells, controlling the temperature rise of the battery cells, thereby effectively improving the safety performance and cycle life of the battery.

[0004] Although this device uses physical contact to dissipate heat for battery cells, it cannot measure the temperature of the battery pack surface in real time, cannot know the temperature drop of the battery pack during the heat dissipation process, and cannot calculate the heat dissipation efficiency through quantitative data, which is not conducive to improving the heat dissipation device. Utility Model Content

[0005] In view of the above situation, in order to overcome the defects of the prior art, the purpose of the present invention is to provide a battery pack heat dissipation device, which is equipped with multiple workstations for placing battery packs, and at the same time, each group of battery packs is equipped with a dedicated detection device to measure the battery pack temperature value in real time.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A device for dissipating heat from a battery pack includes a container shell. Four battery placement stations are sequentially provided inside the container shell from left to right. The lower ends of the battery placement stations are provided with exhaust and heat dissipation elements fixed to the bottom of the container shell. The exhaust and heat dissipation elements blow air toward the battery placement stations. A battery temperature detection device is provided on one side of each battery placement station and fixed to the side wall of the container shell. The battery temperature detection device uses a patch temperature sensor to press against the surface of the battery pack to measure its outer surface temperature.

[0008] Furthermore, the exhaust and heat dissipation element is composed of five groups of heat dissipation fans installed side by side. A connecting plate for fixing the position of the heat dissipation fan is provided on the outside of the heat dissipation fan, and strip-shaped ventilation grooves are provided on the surface of the plate of the battery placement station.

[0009] Furthermore, a sealing plate is fixed between the upper end of the connecting plate and the container shell, and the sealing plate and the connecting plate constitute a transition cavity. A cold air inlet pipe is provided on the side wall of the container shell and passes through the inside of the transition cavity. After the cold air enters the transition cavity, it is blown to the battery placement station by the cooling fan.

[0010] Furthermore, the battery temperature detection device includes a fixed plate, a connecting top plate, and a sensor mounting plate. The fixed plate is fixed to the side wall of the container shell, the connecting top plate is fixed to the upper end of the fixed plate, the sensor mounting plate is arranged between the fixed plate and the connecting top plate, and the patch temperature sensor is arranged at the lower end of the sensor mounting plate. The sensor mounting plate extends from the fixed plate and the connecting top plate and is suspended at the upper end of the battery placement station.

[0011] Furthermore, a longitudinal slide groove is provided inside the fixed plate, a positioning groove is provided on the surface of the connecting top plate, a movable plate that moves along the slide groove is provided inside the fixed plate, the sensor mounting plate is fixed at the front end of the movable plate, a control column passing through the positioning groove is fixed at the upper end of the sensor mounting plate, a connecting piece is fixed at the upper end of the control column, and a control cylinder connected to the connecting piece is fixed at the side wall at the rear end of the fixed plate.

[0012] In summary, the present invention has the following beneficial effects:

[0013] The container of the utility model is provided with multiple battery placement stations inside, which can provide heat dissipation for multiple battery groups at the same time, ensuring the number of batteries that can be dissipated at a time and achieving high efficiency.

[0014] The utility model provides an independent heat dissipation device for each group of workstations, which uses air cooling to transport cold air upward to the outside of the battery pack, effectively reducing the ambient temperature of the battery pack;

[0015] The utility model provides an independent temperature detection unit for each group of workstations, and monitors the surface temperature of the battery pack in a contact manner. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application, but do not constitute an improper limitation of the present invention. In the drawings:

[0017] Figure 1 It is an oblique view of the utility model;

[0018] Figure 2 It is a front view of the utility model;

[0019] Figure 3 It is a bottom view of the utility model;

[0020] Figure 4 It is a top view of the present utility model.

[0021] In the figure, 1. container shell; 2. battery placement station; 3. cooling fan; 4. connecting plate; 5. ventilation slot; 6. sealing plate; 7. cold air inlet pipe; 8. fixing plate; 9. connecting top plate; 10. sensor mounting plate; 11. surface mount temperature sensor; 12. moving plate; 13. control column; 14. connecting piece; 15. control cylinder. DETAILED DESCRIPTION

[0022] The above and other technical contents, features and effects of the present invention are described in detail below with reference to the attached Figure 1 To the attached Figure 4 The detailed description of the embodiments will clearly show that the structural contents mentioned in the following embodiments are all based on the accompanying drawings.

[0023] Various exemplary embodiments of the present invention will be described below with reference to the accompanying drawings. Example

[0024] A device for dissipating heat from a battery pack includes a container shell 1. Four battery placement stations 2 are arranged inside the container shell 1 from left to right. The size of the battery placement station 2 is larger than the battery pack placed therein, thereby facilitating the design of the exhaust structure.

[0025] The lower end of the battery placement station 2 is provided with an exhaust and heat dissipation element fixed to the bottom of the container shell 1, and the exhaust and heat dissipation element blows toward the battery placement station 2. Preferably, the exhaust and heat dissipation element is composed of five groups of cooling fans 3 installed side by side, and the outer side of the cooling fan 3 is provided with a connecting plate 4 for fixing the position of the cooling fan 3. The surface of the plate of the battery placement station 2 is provided with a strip-shaped ventilation groove 5. The upward air duct can make the airflow generated by the cooling fan 3 blow toward the battery pack in the battery placement station 2 to dissipate heat on its surface.

[0026] Preferably, a sealing plate 6 is fixed between the upper end of the connecting plate 4 and the container shell 1, and the sealing plate 6 and the connecting plate 4 constitute a transition cavity. A cold air inlet pipe 7 is provided at the side wall of the container shell 1 and penetrates into the inside of the transition cavity. After the cold air enters the transition cavity, it is blown to the battery placement station 2 by the cooling fan 3. After the cold air made from the outside enters the transition cavity, it is blown upward by the cooling fan 3. The cold air acts on the battery pack through the ventilation slot 5, and cools down its outer surface and the ambient temperature, which greatly increases the efficiency of cooling and heat dissipation.

[0027] A battery temperature detection device fixed to the side wall of the container shell 1 is provided on one side of each battery placement station 2. The battery temperature detection device uses a patch temperature sensor 11 to press against the surface of the battery pack to measure its outer surface temperature for real-time monitoring of the battery pack surface temperature.

[0028] Preferably, the battery temperature detection device includes a fixed plate 8, a connecting top plate 9, and a sensor mounting plate 10. The fixed plate 8 is fixed to the side wall of the container shell 1, the connecting top plate 9 is fixed to the upper end of the fixed plate 8, the sensor mounting plate 10 is arranged between the fixed plate 8 and the connecting top plate 9, and the patch temperature sensor 11 is arranged at the lower end of the sensor mounting plate 10. The sensor mounting plate 10 extends from the fixed plate 8 and the connecting top plate 9 and is suspended at the upper end of the battery placement station 2.

[0029] A longitudinal slide groove is provided inside the fixed plate 8, a positioning groove is provided on the surface of the connecting top plate 9, a movable plate 12 that moves along the slide groove is provided inside the fixed plate 8, the sensor mounting plate 10 is fixed to the front end of the movable plate 12, and a control column 13 passing through the positioning groove is fixed at the upper end of the sensor mounting plate 10, and a connecting piece 14 is fixed at the upper end of the control column 13. A control cylinder 15 connected to the connecting piece 14 is fixed at the side wall at the rear end of the fixed plate 8.

[0030] In an embodiment of the battery temperature detection device, the control cylinder 15 serves as a driving component for controlling the positions of the control column 13, the movable plate 12, and the sensor mounting plate 10. When no battery pack is placed in the battery placement station 2, the control cylinder 15 controls the sensor position to rise, facilitating the placement of the battery pack. When a battery pack has been placed in the battery placement station 2, the control cylinder 15 controls the sensor position to descend, so that the patch temperature sensor 11 sticks to the surface of the battery pack, thereby facilitating the measurement of the surface temperature of the battery pack.

[0031] The above is a further detailed description of the present invention in combination with a specific implementation method, and it cannot be determined that the specific implementation of the present invention is limited to this. For technical personnel in the field of the present invention and related technical fields, based on the technical solution of the present invention, any expansion and replacement of operating methods and data should fall within the scope of protection of the present invention.

Claims

1. A device for dissipating heat from a battery pack, characterized in that: The invention comprises a container shell (1), wherein four battery placement stations (2) are sequentially arranged inside the container shell (1) from left to right, wherein the lower end of the battery placement station (2) is provided with an exhaust and heat dissipation element fixed to the bottom of the container shell (1), and the exhaust and heat dissipation element blows air toward the battery placement station (2), and a battery temperature detection device fixed to the side wall of the container shell (1) is provided on one side of each battery placement station (2), wherein the battery temperature detection device adopts a patch-type temperature sensor (11) against the surface of the battery pack to measure the outer surface temperature thereof.

2. The battery pack heat dissipation device according to claim 1, characterized in that: The exhaust and heat dissipation element is composed of five groups of heat dissipation fans (3) installed side by side. A connecting plate (4) for fixing the position of the heat dissipation fan (3) is provided on the outside of the heat dissipation fan (3). Strip-shaped ventilation slots (5) are provided on the surface of the plate of the battery placement station (2).

3. The battery pack heat dissipation device according to claim 2, characterized in that: A sealing plate (6) is fixedly provided between the upper end of the connecting plate (4) and the container shell (1), and the sealing plate (6) and the connecting plate (4) form a transition cavity. A cold air inlet pipe (7) is provided on the side wall of the container shell (1) and passes through the interior of the transition cavity. After the cold air enters the transition cavity, it is blown by the cooling fan (3) to the battery placement station (2).

4. The battery pack heat dissipation device according to claim 1, characterized in that: The battery temperature detection device comprises a fixed plate (8), a connecting top plate (9), and a sensor mounting plate (10); the fixed plate (8) is fixed to the side wall of the container shell (1); the connecting top plate (9) is fixed to the upper end of the fixed plate (8); the sensor mounting plate (10) is arranged between the fixed plate (8) and the connecting top plate (9); the patch temperature sensor (11) is arranged at the lower end of the sensor mounting plate (10); the sensor mounting plate (10) extends from the fixed plate (8) and the connecting top plate (9) and is suspended at the upper end of the battery placement station (2).

5. The battery pack heat dissipation device according to claim 4, characterized in that: A longitudinal slide groove is provided inside the fixed plate (8), a positioning groove is provided on the surface of the connecting top plate (9), a movable plate (12) that moves along the slide groove is provided inside the fixed plate (8), the sensor mounting plate (10) is fixed to the front end of the movable plate (12), a control column (13) passing through the positioning groove is fixed on the upper end of the sensor mounting plate (10), a connecting piece (14) is fixed on the upper end of the control column (13), and a control cylinder (15) connected to the connecting piece (14) is fixed on the side wall of the rear end of the fixed plate (8).

Images