New energy battery box temperature detection device

Abstract

The utility model discloses a new energy battery box temperature detection device, which comprises a fixed seat, a thermistor is fixedly arranged in the fixed seat, a wire is fixedly arranged at the end part of the thermistor, one side, far away from the wire, of the fixed seat is fixedly connected with a connecting seat, and the end part of the connecting seat is fixedly connected with a fixed sheet. A heat transfer piece is fixedly arranged at the end, away from the connecting base, of the fixing piece, the two sets of wires are arranged at the tail end of the thermistor, the two sets of wires are evenly fixed through a plurality of sets of limiting pipes, and meanwhile the limiting pipes are of a transverse 8-shaped structure made of rubber materials. According to the temperature detection device for the new energy battery box, the heat transfer sheet is welded on the printed circuit board on the surface of the battery pack, which needs to be subjected to temperature measurement, and a tiny thermistor does not need to be directly welded on the printed circuit board, so that the thermistor is not easy to damage during operation, and the operation difficulty during installation of the thermistor is also reduced.

Description

Technical Field

[0001] The utility model relates to the field of new energy vehicle accessories, in particular to a new energy battery box temperature detection device. Background Art

[0002] Temperature detection inside the new energy battery box can usually be achieved through the following methods:

[0003] Thermocouple temperature measurement: Thermocouples are a common temperature sensor that determines temperature by measuring the thermoelectric potential generated at the junction of different metals. For example, thermocouple probes can be installed at key locations inside the battery box, such as the surface of the battery module and near the battery terminals, to obtain accurate temperature data.

[0004] Thermistor temperature measurement: The resistance value of a thermistor changes with temperature. Multiple thermistors can be placed in the battery compartment to calculate the temperature by measuring the change in resistance value. For example, a thermistor with a negative temperature coefficient (NTC) can have its resistance value decrease as the temperature increases.

[0005] Infrared temperature measurement: uses infrared radiation to measure the temperature of an object. However, this method is relatively rarely used inside new energy battery boxes because it usually requires an unobstructed measurement path and has high requirements for the measurement environment.

[0006] Thermistor temperature measurement is widely used to measure the temperature of battery packs inside new energy battery boxes. Specifically, the thermistor is installed on the printed circuit board on the battery pack. The thermistor is small in size. When it is damaged and replaced, maintenance personnel need to hold tweezers in one hand and a welding gun in the other hand to weld the thermistor, which is very inconvenient to operate. Utility Model Content

[0007] The purpose of the present utility model is to provide a new energy battery box temperature detection device to solve the defects mentioned in the above background technology.

[0008] To achieve the above-mentioned purpose, a new energy battery box temperature detection device is provided, including a fixing seat, a thermistor is fixedly arranged inside the fixing seat, and a wire is fixedly arranged at the end of the thermistor, and at the same time, the side of the fixing seat away from the wire is fixedly connected to the connecting seat, and the end of the connecting seat is fixedly connected to the fixing plate, and a heat transfer plate is fixedly arranged at the end of the fixing plate away from the connecting seat, and the wires are arranged in two groups at the tail end of the thermistor, and the two groups of wires are evenly fixed by multiple groups of limiting tubes, and the limiting tubes are an "∞"-shaped structure made of rubber material.

[0009] Preferably, the fixing seat is a cylindrical structure made of metal material, and the axial section of the fixing seat is "C"-shaped.

[0010] Preferably, the fixing seat is arranged in a rectangular shape after being unfolded, and six groups of heat dissipation holes are evenly arranged on the outer side of the fixing seat, and the heat dissipation holes are arranged in a straight line.

[0011] Preferably, the distances between two adjacent groups of heat dissipation holes are the same, and the length of the heat dissipation holes is equal to four fifths of the length of the fixing base.

[0012] Preferably, the fixing seat is fixedly connected to the heat transfer plate through the connecting seat, the fixing plate, and the heat transfer plate is a circular structure made of metal material.

[0013] Preferably, a receiving groove is provided at the bottom of the heat transfer plate, and the receiving groove is circular, and heat transfer silicone grease is applied inside the receiving groove.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The heat transfer sheet is welded to the printed circuit board on the surface of the battery pack where the temperature needs to be measured. There is no need to weld the tiny thermistor directly to the printed circuit board. This is less likely to damage the thermistor during operation and also reduces the difficulty of the thermistor installation.

[0016] 2. The distribution and fixation of multiple limit tubes 8 can effectively constrain the wire 7 over a longer distance, reducing the shaking and displacement of the wire 7 due to its own weight or external interference, especially when the new energy vehicle is traveling on a rugged road; thereby improving the overall stability of the temperature detection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view schematic diagram of the structure of the utility model;

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

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

[0020] Figure 4 It is the rear view of the structure of the utility model.

[0021] Numbers in the figure: 1, fixing seat; 2, heat dissipation hole; 3, connecting seat; 4, fixing plate; 5, heat transfer plate; 51, receiving groove; 6, thermistor; 7, wire; 8, limit tube. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1-4 The utility model provides a temperature detection device for a new energy battery box, including a fixing base 1, a thermistor 6 is fixedly arranged inside the fixing base 1, and a wire 7 is fixedly arranged at the end of the thermistor 6, and at the same time, the side of the fixing base 1 away from the wire 7 is fixedly connected to the connecting base 3, and the end of the connecting base 3 is fixedly connected to the fixing plate 4, and the end of the fixing plate 4 away from the connecting base 3 is fixedly provided with a heat transfer plate 5, and the wire 7 is arranged in two groups at the tail end of the thermistor 6, and the two groups of wires 7 are evenly fixed by multiple groups of limiting tubes 8, and the limiting tube 8 is an "∞"-shaped structure made of rubber material.

[0024] Working Principle: The operator applies silicone grease to the inside of the receiving groove 51 opened at the bottom of the heat transfer sheet 5, and then covers the heat transfer sheet 5 on the designated location on the battery pack surface where temperature measurement is required. The heat generated by the battery pack is transferred to the thermistor 6 through the connecting seat 3, the fixing sheet 4, and the heat transfer sheet 5. The temperature of the battery pack inside the new energy battery box is detected by the thermistor 6.

[0025] The heat transfer sheet 5 can also be welded to the printed circuit board on the surface of the battery pack where the temperature needs to be measured, without the need to weld the tiny thermistor 6 directly to the printed circuit board. During operation, it is not easy to damage the thermistor 6, and the difficulty of operating the thermistor 6 when installing is also reduced.

[0026] As a preferred embodiment, the fixing seat 1 is a cylindrical structure made of metal material, and the axial section of the fixing seat 1 is a "C" shape.

[0027] The fixing base 1 is arranged in a rectangular shape after being unfolded, and six groups of heat dissipation holes 2 are evenly arranged on the outer side of the fixing base 1, and the heat dissipation holes 2 are arranged in a straight line.

[0028] like Figure 1-4 As shown: six groups of heat dissipation holes 2 are evenly opened on the outer side of the fixing base 1, which reduces the area of the thermistor 6 wrapped by the fixing base 1, improves the heat dissipation performance of the thermistor 6 when working, and reduces the material and cost of the fixing base 1.

[0029] The distances between two adjacent groups of heat dissipation holes 2 are the same, and the length of the heat dissipation holes 2 is equal to four fifths of the length of the fixing base 1 .

[0030] like Figure 1-4As shown: the fixing base 1 is a metal frame, the thermistor 6 is set in the middle of the fixing base 1, and then the two sides of the fixing base 1 are bent upward and wrapped around the outside of the thermistor 6 to complete the fixing of the thermistor 6. The material of the fixing base 1 is preferably metal aluminum, which has good conductivity and ductility, and is more convenient when used.

[0031] As a preferred embodiment, the fixing seat 1 is fixedly connected to the heat transfer plate 5 via the connecting seat 3 and the fixing plate 4, and the heat transfer plate 5 is a circular structure made of metal material.

[0032] The bottom of the heat transfer sheet 5 is provided with a receiving groove 51 , which is circular in shape. Heat transfer silicone grease is applied inside the receiving groove 51 .

[0033] like Figure 1-4 As shown: the two groups of wires 7 are evenly fixed by multiple groups of "∞"-shaped limit tubes 8, which can be used to organize the longer wires 7 to prevent the two wires 7 from being loose and scattered; the distribution and fixation of multiple limit tubes 8 can effectively constrain the wires 7 over a longer distance, reducing the shaking and displacement of the wires 7 due to their own weight or external interference, especially when new energy vehicles are traveling on rugged roads; thereby improving the overall stability of the temperature detection device.

[0034] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new energy battery box temperature detection device, comprising a fixing seat (1), characterized in that: The fixing seat (1) is fixedly provided with a thermistor (6), and a wire (7) is fixedly provided at the end of the thermistor (6). At the same time, the side of the fixing seat (1) away from the wire (7) is fixedly connected to the connecting seat (3), and the end of the connecting seat (3) is fixedly connected to the fixing plate (4). A heat transfer plate (5) is fixedly provided at the end of the fixing plate (4) away from the connecting seat (3). The wire (7) is provided in two groups at the tail end of the thermistor (6), and the two groups of wires (7) are evenly fixed by multiple groups of limiting tubes (8). At the same time, the limiting tubes (8) are made of rubber material and have an "∞"-shaped structure.

2. A new energy battery box temperature detection device according to claim 1, characterized in that: The fixing seat (1) is a cylindrical structure made of metal material, and the axial section of the fixing seat (1) is set in a "C" shape.

3. The temperature detection device for a new energy battery box according to claim 1, characterized in that: The fixing seat (1) is arranged in a rectangular shape after being unfolded, and six groups of heat dissipation holes (2) are evenly arranged on the outer side of the fixing seat (1), and the heat dissipation holes (2) are arranged in a straight line.

4. A new energy battery box temperature detection device according to claim 3, characterized in that: The distances between two adjacent groups of heat dissipation holes (2) are consistent, and the length of the heat dissipation holes (2) is equal to four-fifths of the length of the fixing seat (1).

5. The temperature detection device for a new energy battery box according to claim 1, characterized in that: The fixing seat (1) is fixedly connected to the heat transfer plate (5) via the connecting seat (3) and the fixing plate (4), and the heat transfer plate (5) is a circular structure made of metal material.

6. The temperature detection device for a new energy battery box according to claim 5, characterized in that: A receiving groove (51) is provided at the bottom of the heat transfer plate (5), and the receiving groove (51) is circular, and the interior of the receiving groove (51) is coated with heat transfer silicone grease.

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