Device for detecting abnormal charging and discharging temperature of lithium battery pack

Abstract

The utility model provides a lithium battery pack charge and discharge temperature abnormity detection device, which comprises a detection mechanism, a mounting plate is magnetically connected to the detection mechanism, the bottom side of the mounting plate is fixedly connected with a heat dissipation mechanism, lithium batteries are respectively clamped into battery jars, charge and discharge temperature detection is carried out on the lithium batteries through the detection mechanism, and after the detection is completed, the heat dissipation mechanism is fixedly connected with the mounting plate. An external air source is started, the external air source enters the secondary air duct through the main air duct, the air source enters the heat dissipation pipes from the secondary air duct, the multiple air outlets evenly blow the surface of the lithium battery, and the air sources of the air outlets formed in the two sides of the bottommost end of the arc-shaped heat dissipation pipes can enter gaps of the charging groove to dissipate heat of the side wall of the lithium battery. And after the temperature of the lithium battery is reduced, the lithium battery can be taken out from the battery jar, and air blown out of the air outlet dissipates heat of the battery jar and the temperature sensor, so that the heat of the detection mechanism and the lithium battery can be dissipated in time, the downtime caused by waiting for heat dissipation is shortened, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery detection, in particular to a detection device for abnormal charging and discharging temperature of a lithium battery pack. Background Art

[0002] Lithium battery is a battery that uses lithium metal or lithium alloy as negative electrode material and non-aqueous electrolyte solution. Lithium batteries can be roughly divided into two categories: lithium metal batteries and lithium ion batteries. Lithium ion batteries do not contain metallic lithium and are rechargeable. Lithium batteries have the advantages of high energy density, high voltage, no pollution, long life, no memory effect, etc., so they are widely used in mobile communications, power tools, electric bicycles, electric power-assisted bicycles, electric vehicles, military defense, aerospace and other fields. However, lithium batteries also have some potential safety hazards. For example, overcharging, over-discharging, short circuit, high temperature and other conditions may cause thermal runaway of the battery, leading to fire or even explosion. Therefore, it is necessary to detect the charging and discharging temperature of lithium batteries.

[0003] Existing detection devices generally insert the battery into the battery slot of the detection mechanism, charge and discharge the battery through the positive and negative connection sockets at both ends, and the temperature sensor records the temperature of the battery surface and transmits the detection data to the central processor. However, during the battery detection process, the battery will transmit its own temperature to the temperature sensor. In order to avoid affecting the detection data, it takes a long time to cool down the device to restore it to a suitable working temperature. In a high temperature environment or a confined space, the effect of natural heat dissipation will be more limited, which may cause the device to be in a high temperature state for a long time. This means that after each charge and discharge temperature detection, you need to wait for a while before using the device again, which affects work efficiency to a certain extent.

[0004] Therefore, it is necessary to provide a new device for detecting abnormal charging and discharging temperature of a lithium battery pack to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a device for detecting abnormal charging and discharging temperature of a lithium battery pack.

[0006] The utility model provides a detection device for abnormal charging and discharging temperature of a lithium battery pack, comprising: a detection mechanism, wherein a plurality of battery slots for placing lithium batteries are equidistantly arranged in the detection mechanism, wherein a temperature sensor is arranged in each of the plurality of battery slots, and a mounting plate is magnetically connected to the detection mechanism, and a heat dissipation mechanism is fixedly connected to the bottom side of the mounting plate;

[0007] The heat dissipation mechanism includes a heat dissipation plate, a main air duct, multiple secondary air ducts and multiple heat dissipation pipes. The bottom side of the heat dissipation plate is provided with multiple equally distributed arc grooves, and the multiple arc grooves respectively correspond to the positions of the multiple battery slots. One side of the main air duct is arranged in the heat dissipation plate, one end of the main air duct is connected to an external air source, one end of the multiple secondary air ducts is connected to one side of the main air duct, the bottom sides of the multiple secondary air ducts are connected to multiple heat dissipation pipes, the multiple heat dissipation pipes are arc-shaped and connected end to end, the bottom wall and both sides of the multiple heat dissipation pipes are provided with multiple air outlets, and the multiple air outlets extend to the outside of the heat dissipation plate.

[0008] Preferably, the air outlet is arranged perpendicular to the tangent direction of the air outlet on the heat dissipation pipe.

[0009] Preferably, the detection mechanism includes a detection platform, in which a plurality of battery slots for placing lithium batteries are equidistantly arranged, a negative electrode connection seat and a positive electrode connection seat are respectively provided on both sides of the battery slots, a plurality of temperature sensors are respectively embedded in the bottom sides of the plurality of battery slots and fit with the bottom sides of the lithium batteries, a display screen is provided on the upper end of one side of the detection platform, a central processing unit is fixedly installed inside the detection platform, and the temperature sensor is connected to the display screen signal through the central processing unit.

[0010] Preferably, an indicator light is provided on the testing platform, and the indicator light is electrically connected to the positive electrode connection socket and the negative electrode connection socket.

[0011] Preferably, an electric wire is fixedly installed on one side of the detection platform, and the electric wire is connected to an external power source.

[0012] Preferably, magnetic strips are provided at the bottom ends of both sides of the mounting plate, and magnets are provided at the upper ends of both sides of the detection platform, and the magnets are magnetically attracted to the magnetic strips.

[0013] Compared with the related art, the device for detecting abnormal charging and discharging temperature of a lithium battery pack provided by the utility model has the following beneficial effects:

[0014] The utility model provides a detection device for abnormal charging and discharging temperature of a lithium battery pack. The lithium batteries are respectively inserted into battery slots to detect the charging and discharging temperature of the lithium batteries through a detection mechanism. After the detection is completed, an external air source is started, and the external air source enters a secondary air duct through a main air duct. The air source enters each heat dissipation pipe from the secondary air duct. The bottom wall of each arc-shaped heat dissipation pipe is provided with a plurality of air outlets, which can evenly blow the surface of the lithium battery. The air sources of the air outlets arranged on both sides of the bottom end of the arc-shaped heat dissipation pipe can enter the gap of the charging slot to dissipate the heat of the side wall of the lithium battery. The lithium battery can be taken out of the battery slot after its temperature drops. The wind blown out of the air outlet dissipates the heat of the battery slot and the temperature sensor, so that the heat of the detection mechanism and the lithium battery can be dissipated in time, and the machine can recover to a suitable working temperature more quickly, reducing the downtime caused by waiting for heat dissipation, thereby improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of the device for detecting abnormal charging and discharging temperature of a lithium battery pack provided by the utility model;

[0016] Figure 2 A schematic diagram of the structure disassembly of a device for detecting abnormal charging and discharging temperature of a lithium battery pack provided by the utility model;

[0017] Figure 3 A schematic diagram of the structure of the mounting plate and the heat dissipation mechanism provided by the utility model;

[0018] Figure 4 A schematic diagram of the structure of the detection mechanism provided by the utility model;

[0019] Figure 5 This is a schematic diagram of the local structure of the heat dissipation mechanism provided by the utility model.

[0020] Numbers in the figure: 1. Test bench; 2. Temperature sensor; 3. Battery slot; 4. Positive electrode connector; 5. Negative electrode connector; 6. Lithium battery; 7. Display screen; 8. Indicator light; 9. Wires; 10. Magnet; 11. Magnetic strip; 12. Mounting plate; 13. Heat sink; 14. Main air duct; 15. Secondary air duct; 16. Heat pipe; 17. Air outlet; 18. Arc groove. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0022] Please refer to Figure 1-Figure 5 ,in, Figure 1 This is a schematic diagram of the overall structure of the device for detecting abnormal charging and discharging temperature of a lithium battery pack provided by the utility model; Figure 2A schematic diagram of the structure disassembly of a device for detecting abnormal charging and discharging temperature of a lithium battery pack provided by the utility model; Figure 3 A schematic diagram of the structure of the mounting plate and the heat dissipation mechanism provided by the utility model; Figure 4 A schematic diagram of the structure of the detection mechanism provided by the utility model; Figure 5 This is a schematic diagram of the local structure of the heat dissipation mechanism provided by the utility model.

[0023] In the specific implementation process, Figure 1-Figure 5 As shown, a detection device for abnormal charging and discharging temperature of a lithium battery pack includes a detection mechanism, wherein a plurality of battery slots 3 for placing lithium batteries 6 are equidistantly arranged in the detection mechanism, and a temperature sensor 2 is arranged in each of the plurality of battery slots 3. A mounting plate 12 is magnetically connected to the detection mechanism, and a heat dissipation mechanism is fixedly connected to the bottom side of the mounting plate 12. The heat dissipation mechanism includes a heat dissipation plate 13, a main air duct 14, a plurality of secondary air ducts 15 and a plurality of heat dissipation pipes 16. A plurality of equally distributed arc grooves 18 are provided on the bottom side of the heat dissipation plate 13, and the plurality of arc grooves 18 respectively correspond to the positions of the plurality of battery slots 3. One side of the main air duct 14 is arranged in the heat dissipation plate 13, and one end of the main air duct 14 is connected to an external air source, and one end of the plurality of secondary air ducts 15 is connected to one side of the main air duct 14, and the bottom sides of the plurality of secondary air ducts 15 are connected to a plurality of heat dissipation pipes 16. The plurality of heat dissipation pipes 16 are arc-shaped and the first The tail is connected, and multiple air outlets 17 are provided on the bottom wall and both sides of the multiple heat dissipation tubes 16. The multiple air outlets 17 extend to the outside of the heat dissipation plate 13. The air outlets 17 are perpendicular to the tangent direction of the heat dissipation tube 16. The external air source can be a fan, a blower, etc., to provide the air volume or air pressure required by the system to start the external air source, and the external air source enters the secondary air duct 15 through the main air duct 14. The wind source enters each heat dissipation tube 16 from the secondary air duct 15. The bottom wall of each arc-shaped heat dissipation tube 16 is provided with multiple air outlets 17, which can evenly blow on the surface of the lithium battery 6, and the wind source of the air outlets 17 arranged on both sides of the bottom of the arc-shaped heat dissipation tube 16 can enter the gap of the charging slot to dissipate the side wall of the lithium battery 6. After the temperature of the lithium battery 6 drops, it can be taken out of the battery slot 3, and the wind blown out by the air outlet 17 dissipates the heat of the battery slot 3 and the temperature sensor 2.

[0024] The detection mechanism includes a detection platform 1, in which a plurality of battery slots 3 for placing lithium batteries 6 are equidistantly arranged, and negative electrode connection seats 5 and positive electrode connection seats 4 are respectively arranged on both sides of the battery slots 3. A plurality of temperature sensors 2 are respectively embedded in the bottom sides of the plurality of battery slots 3 and fit with the bottom sides of the lithium batteries 6. A display screen 7 is provided at the upper end of one side of the detection platform 1. A central processing unit is fixedly installed inside the detection platform 1. The temperature sensor 2 is connected to the display screen signal through the central processing unit. An indicator light 8 is provided on the detection platform 1. The indicator light 8 is electrically connected to the positive electrode connection seat 4 and the negative electrode connection seat 5. A wire 9 is fixedly installed on one side of the detection platform 1. The wire 9 is connected to an external power supply. When the lithium battery 6 is detected, the lithium battery 6 is respectively inserted into the battery slot. 3, the positive electrode connection seat 4 is electrically connected to the negative electrode connection seat 5 through the lithium battery 6. After the connection, the indicator light 8 lights up to remind the tester that charging has started. During the charging process, the temperature sensor 2 detects the temperature of the lithium battery 6, and the temperature sensor 2 transmits the detected data to the central processor. The central processor displays the data through the display screen 7, and informs the tester of the test result through the display screen 7. Magnetic strips 11 are provided at the bottom ends of both sides of the mounting plate 12, and magnets 10 are provided at the upper ends of both sides of the test bench 1. The magnets 10 and the magnetic strips 11 are magnetically attracted to each other. There is no need to use complex fixing devices or tools. Just bring the two close together, and the magnetic force can automatically adsorb them tightly together, which is convenient for installing and connecting the mounting plate 12 and the test bench 1.

[0025] The working principle provided by the utility model is as follows: the lithium battery 6 is respectively inserted into the positive electrode connection seat 4 in the battery slot 3, and the positive electrode connection seat 4 is electrically connected to the negative electrode connection seat 5 through the lithium battery 6. After connection, the indicator light 8 lights up to remind the detection personnel that charging has started. During the charging process, the temperature sensor 2 detects the temperature of the lithium battery 6, and the data detected by the temperature sensor 2 is transmitted to the central processor. The central processor displays the data through the display screen 7, and informs the detection personnel of the detection result through the display screen 7. After the detection is completed, the external air source is started, and the external air source enters the secondary air duct 15 through the main air duct 14. The wind source enters each heat dissipation pipe 16 from the secondary air duct 15. The bottom wall of each arc-shaped heat dissipation pipe 16 is provided with a plurality of air outlets 17, which can evenly blow the surface of the lithium battery 6, and the wind source of the air outlet 17 arranged on both sides of the bottom end of the arc-shaped heat dissipation pipe 16 can enter the gap of the charging slot to dissipate the side wall of the lithium battery 6. After the temperature of the lithium battery 6 drops, it can be taken out of the battery slot 3, and the wind blown out of the air outlet 17 dissipates the heat of the battery slot 3 and the temperature sensor 2.

[0026] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0027] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A device for detecting abnormal charging and discharging temperature of a lithium battery pack, characterized in that: include: A detection mechanism, wherein a plurality of battery slots (3) for placing lithium batteries (6) are equidistantly arranged in the detection mechanism, a temperature sensor (2) is arranged in each of the plurality of battery slots (3), a mounting plate (12) is magnetically connected to the detection mechanism, and a heat dissipation mechanism is fixedly connected to the bottom side of the mounting plate (12); The heat dissipation mechanism comprises a heat dissipation plate (13), a main air duct (14), a plurality of secondary air ducts (15) and a plurality of heat dissipation pipes (16); a plurality of equally spaced arc grooves (18) are provided on the bottom side of the heat dissipation plate (13), and the plurality of arc grooves (18) respectively correspond to the positions of the plurality of battery slots (3); one side of the main air duct (14) is arranged in the heat dissipation plate (13); one end of the main air duct (14) is connected to an external air source; one end of the plurality of secondary air ducts (15) is connected to one side of the main air duct (14); the bottom sides of the plurality of secondary air ducts (15) are connected to the plurality of heat dissipation pipes (16); the plurality of heat dissipation pipes (16) are arc-shaped and connected end to end; the bottom walls and both sides of the plurality of heat dissipation pipes (16) are provided with a plurality of air outlets (17); the plurality of air outlets (17) extend to the outside of the heat dissipation plate (13).

2. The device for detecting abnormal charging and discharging temperature of a lithium battery pack according to claim 1, characterized in that: The air outlet (17) is arranged perpendicular to the tangent direction of the heat dissipation pipe (16).

3. The device for detecting abnormal charging and discharging temperature of a lithium battery pack according to claim 2, characterized in that: The detection mechanism comprises a detection platform (1), wherein a plurality of battery slots (3) for placing lithium batteries (6) are equidistantly arranged in the detection platform (1), a negative electrode connection seat (5) and a positive electrode connection seat (4) are respectively arranged on both sides of the battery slots (3), a plurality of temperature sensors (2) are respectively embedded in the bottom sides of the plurality of battery slots (3) and fit with the bottom sides of the lithium batteries (6), a display screen (7) is arranged at the upper end of one side of the detection platform (1), a central processing unit is fixedly installed inside the detection platform (1), and the temperature sensor (2) is connected to the display screen signal through the central processing unit.

4. The device for detecting abnormal charging and discharging temperature of a lithium battery pack according to claim 3, characterized in that: The detection platform (1) is provided with an indicator light (8), and the indicator light (8) is electrically connected to the positive electrode connection seat (4) and the negative electrode connection seat (5).

5. The device for detecting abnormal charging and discharging temperature of a lithium battery pack according to claim 4, characterized in that: An electric wire (9) is fixedly installed on one side of the detection platform (1), and the electric wire (9) is connected to an external power source.

6. The device for detecting abnormal charging and discharging temperature of a lithium battery pack according to claim 5, characterized in that: Magnetic strips (11) are provided at the bottom ends of both sides of the mounting plate (12), and magnets (10) are provided at the upper ends of both sides of the detection platform (1), and the magnets (10) and the magnetic strips (11) are magnetically attracted to each other.

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