CN219714553U - Temperature measuring device of battery pack and battery pack - Google Patents
Temperature measuring device of battery pack and battery pack Download PDFInfo
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- CN219714553U CN219714553U CN202223165661.9U CN202223165661U CN219714553U CN 219714553 U CN219714553 U CN 219714553U CN 202223165661 U CN202223165661 U CN 202223165661U CN 219714553 U CN219714553 U CN 219714553U
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- temperature measuring
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- 238000009529 body temperature measurement Methods 0.000 claims abstract description 61
- 230000007246 mechanism Effects 0.000 claims description 12
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- 238000005070 sampling Methods 0.000 abstract description 11
- 238000001514 detection method Methods 0.000 abstract description 7
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000005516 engineering process Methods 0.000 abstract description 3
- 230000005540 biological transmission Effects 0.000 description 5
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- 230000005855 radiation Effects 0.000 description 3
- 230000004044 response Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
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- 230000003287 optical effect Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
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- 238000004861 thermometry Methods 0.000 description 1
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Abstract
The utility model provides a temperature measuring device of a battery pack and the battery pack, wherein a plurality of single batteries are arranged in a shell of the battery pack side by side, and the battery pack also comprises a fixing assembly and an infrared temperature measuring module; the fixing component is fixedly connected with the shell of the battery pack; the infrared temperature measurement module is arranged in the battery pack; the infrared temperature measurement module can be movably connected with the fixing assembly, and the infrared temperature measurement module can be used for movably detecting temperature information of single batteries in a preset proportion in the battery pack. The temperature measuring device of the battery pack can solve the problems of large detection error and small measurement range caused by NTC detection by using an infrared temperature measuring technology; meanwhile, through the moving mode of the infrared temperature measuring module, the temperature sampling points are used for covering all the single batteries, so that the temperature sampling coverage area is increased, and the cost of temperature measurement is reduced.
Description
Technical Field
The present utility model relates to a temperature measuring device for a battery pack and a battery pack.
Background
As the NTC temperature sensor has the advantages of high resistivity, small heat capacity, quick response, excellent linear relation between the resistance and the temperature, bending capability, low price, long service life and the like. In the prior art, when temperature detection is performed on a battery pack or a battery module, NTC temperature sensors are generally arranged at a plurality of fixed sampling points, and the temperature of the whole battery pack is estimated through temperature information corresponding to a small number of sampling points.
However, NTC temperature sensors have problems of being unsuitable for use in a wide working range, being inconspicuous in mass aging damage, being difficult to replace, increasing errors when the temperature is relatively high or relatively low, and the like. In addition, the temperature of the whole battery pack is estimated by adopting a small number of sampling points, so that the temperature measurement of the battery pack is inaccurate. If more sampling points are required to improve the accuracy of the measurement result, the number of NTCs to be configured is increased, resulting in an increase in the measurement cost and an increase in the complexity of the circuit arrangement.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present utility model is to provide a temperature measuring device for a battery pack and a battery pack for solving the problem of inaccurate temperature measurement of the battery pack or the battery module in the prior art.
To achieve the above and other related objects, the present utility model provides a temperature measuring device of a battery pack, comprising: a fixed component and an infrared temperature measurement module;
the fixing component is fixedly connected with the shell of the battery pack;
the infrared temperature measurement module is arranged in the battery pack; the infrared temperature measurement module is movably connected with the fixed assembly, and the infrared temperature measurement module can be used for movably detecting temperature information of single batteries with preset proportion in the battery pack.
Preferably, the fixing assembly comprises a fixed guide rail and a sliding guide rail;
the fixed surface of the fixed guide rail is fixedly connected with the shell of the battery pack, and the moving surface of the fixed guide rail is movably connected with the sliding guide rail; the sliding guide rail can move relatively on the guide rail of the fixed guide rail;
the infrared temperature measuring module moves relative to the sliding guide rail.
Preferably, the fixed rail and the sliding rail are perpendicular to each other.
Preferably, the fixing component is fixedly connected with the inner wall surface of the shell of the battery pack.
Preferably, the infrared temperature measuring module sensor is embedded in the guide rail of the sliding guide rail and can move in the guide rail of the sliding guide rail.
Preferably, the infrared thermometry module employs MLX90614.
In order to achieve the above and other related objects, the present utility model provides a battery pack, in which a plurality of unit batteries are arranged in parallel in a housing of the battery pack, and the battery pack further includes a fixing assembly and an infrared temperature measurement module;
the fixing component is fixedly connected with the shell of the battery pack;
the infrared temperature measurement module is arranged in the battery pack; the infrared temperature measurement module is movably connected with the fixed assembly, and the infrared temperature measurement module can be used for movably detecting temperature information of single batteries with preset proportion in the battery pack.
As described above, the temperature measuring device of the battery pack and the battery pack of the present utility model have the following advantageous effects:
1. the temperature measuring device of the battery pack can solve the problems of large detection error and small measurement range caused by NTC detection by using an infrared temperature measuring technology.
2. According to the utility model, through a moving mode of the infrared temperature measurement module, the temperature sampling points cover the single batteries with preset proportion in the battery pack, so that the temperature sampling coverage area is increased, and the cost of measuring the temperature of the battery pack is reduced.
3. The infrared temperature measuring module adopts a modularized design, so that the temperature sensing module is simpler to replace.
Drawings
Fig. 1 is a schematic view showing the structure of a battery pack according to an embodiment of the present utility model.
Reference numerals illustrate: 1. a battery pack; 2. a single battery; 3. a fixing assembly; 31. a fixed guide rail; 32. a sliding guide rail; 4. and the infrared temperature measuring module.
Detailed Description
Other advantages and effects of the present utility model will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present utility model with reference to specific examples. The utility model may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present utility model.
It should be noted that, the illustrations provided in the present embodiment merely illustrate the basic concept of the present utility model by way of illustration, and only the components related to the present utility model are shown in the drawings and are not drawn according to the number, shape and size of the components in actual implementation, and the form, number and proportion of the components in actual implementation may be arbitrarily changed, and the layout of the components may be more complex.
According to the utility model, the infrared temperature measuring module is used for carrying out wireless temperature measurement on the battery pack, and the infrared temperature measuring module is used for carrying out temperature measurement on all single batteries in the battery pack through movement of the infrared temperature measuring module relative to the guide rail. According to the utility model, the temperature of all the single batteries is measured only through one infrared temperature measuring module, so that the temperature measuring accuracy is improved, and the measuring cost is reduced.
In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
The following description is needed: generally, temperature measurement can be divided into contact type and non-contact type, and contact type temperature measurement can only measure the temperature of a measured object and a temperature measuring sensor after the measured object and the temperature measuring sensor reach thermal equilibrium, so that the response time is long and the temperature measuring sensor is extremely easily influenced by environmental temperature; the infrared temperature measurement is to determine the temperature of the object according to the infrared radiation energy of the object to be measured, the object to be measured is not contacted with the object to be measured, the temperature field of the object to be measured is not affected, and the infrared temperature measurement has the characteristics of high temperature resolution, high response speed, good stability and the like. Therefore, the infrared temperature sensor also adopts a non-contact measurement mode to carry out wireless temperature measurement on the battery.
The utility model provides a temperature measuring device of a battery pack, comprising: a fixed component 3 and an infrared temperature measurement module 4;
the fixing component 3 is fixedly connected with the shell of the battery pack;
the infrared temperature measurement module is arranged in the battery pack 1; the infrared temperature measurement module 4 is movably connected with the fixing component 3, and the infrared temperature measurement module can be used for movably detecting temperature information of the single batteries 2 in the battery pack 1 in a preset proportion.
The preset proportion can be set according to specific requirements, and exemplary preset proportions can be 50%, 60%, 70%, 80%, 90%, 100% and the like, wherein the higher the preset proportion is, the higher the detection accuracy of the single battery is. Preferably, the preset proportion is 100%, and at this time, the infrared temperature measurement module can detect the temperature information of all the single batteries in the battery pack in a moving way.
The embodiment of the utility model does not limit the specific implementation mode of the movable connection of the infrared temperature measurement module and the fixed component, in one possible implementation mode, the infrared temperature measurement module can be fixed on the shell of the battery pack by adopting the fixed component, the infrared temperature measurement module can move relative to the fixed component, and the infrared temperature measurement module can also be realized by adopting the mode that the fixed part of the fixed component is fixed on the shell of the battery pack, and the movable part of the fixed component drives the infrared temperature measurement module to move relative to the fixed part.
According to the temperature measuring device of the battery pack, all the single batteries in the battery pack can be covered by the movement of the infrared temperature measuring module in the battery pack, so that the temperature measurement of all the single batteries is realized; the battery pack temperature result obtained according to the temperatures of all the single batteries is more accurate.
In one possible embodiment, the fixed assembly 3 comprises a fixed rail 31 and a sliding rail 32;
the fixed surface of the fixed guide rail 31 is fixedly connected with the shell of the battery pack, and the moving surface of the fixed guide rail 31 is movably connected with the sliding guide rail 32; the sliding guide 32 can move relatively on the guide rail of the fixed guide 31;
wherein the infrared temperature measurement module 4 moves relative to the sliding guide rail 32.
The fixing component is fixedly connected with the shell of the battery pack through the fixed guide rail, and moves through the sliding guide rail movably connected with the fixed guide rail, so that the infrared temperature measuring module which can move relatively to the sliding guide rail can move to detect the temperature information of single batteries in the battery pack in a preset proportion.
In the embodiment of the present utility model, as shown in fig. 1, the fixed rail 31 and the sliding rail 32 are perpendicular to each other, and for convenience of description of the directions, a left-to-right direction in fig. 1 is defined as a first direction, a front-to-rear direction is defined as a second direction, and the first direction and the second direction are perpendicular to each other in a horizontal plane; the fixed guide rail 31 is fixedly arranged along the first direction, the sliding guide rail 32 is arranged along the second direction, and the sliding guide rail 32 and the fixed guide rail 31 are movably arranged, namely, the sliding guide rail 32 moves on the fixed guide rail 31 along the first direction to drive the infrared temperature measurement module 4 to translate along the first direction; simultaneously, the infrared temperature measurement module 4 moves along the second direction relative to the sliding guide rail 32; because under the effect of fixed subassembly, infrared temperature measurement module translates in the first direction and the second direction of horizontal plane, realizes that infrared temperature measurement module 4 removes all battery cells that cover the battery package, can avoid temperature sampling point to set up in the traditional mode through only an infrared temperature measurement module and fixed subassembly and a lot of trouble, reduces the measuring cost of battery package simultaneously.
The fixed guide rail and the sliding guide rail can be in other movable connection modes, so long as the moving range of the sliding guide rail can be satisfied, and all single batteries in the battery pack can be covered. As other embodiments, for example, the fixed rail may be configured in other structures, for example, the fixed rail is configured in a ring shape, the sliding rail is movably connected with the fixed rail, the infrared temperature measurement module is movably connected with the sliding rail, and the infrared temperature measurement module movably covers all the single batteries of the battery pack.
One implementation mode of the fixed connection between the fixed component and the shell of the battery pack is as follows: the fixed component is fixedly connected with the inner wall surface of the shell of the battery pack. According to the utility model, the fixing component is arranged in the shell of the battery pack, so that the complexity of mounting and applying the battery pack can be prevented from being increased due to the arrangement of the fixing component, and the fixing component is arranged in the battery pack, so that the interference of other structures outside the shell on the movement in the fixing component can be effectively avoided.
Specifically, the fixed subassembly passes through the fixed surface of fixed guide and the casing inner wall surface fixed connection of battery package. In this implementation, the infrared temperature measurement module sensor is embedded in the rail of the sliding rail and is capable of moving within the rail of the sliding rail.
The infrared temperature measurement module adopts MLX90614.
The MLX90614 infrared temperature measuring module detects the surface temperature of an object by detecting the size and wavelength distribution of infrared radiation energy of the object. MLX90614 ex-factory is from taking the calibration to use advanced low noise amplifier, a piece 17-bit ADC and powerful DSP component in signal conditioning chip, thereby realize high accuracy temperature measurement.
The infrared thermometer generally comprises an optical system, a photoelectric detector, a signal amplifier, signal processing and outputting parts and the like. The optical system gathers the target infrared radiation energy in its field of view, the size of the field of view is determined by the optics part of the thermoscope and its position. The infrared energy is focused on the photodetector and converted into a corresponding electrical signal. The signal is converted into a temperature value (temperature information) of the measured object after passing through an amplifier and a signal processing circuit and correcting according to an algorithm in the instrument and the target emissivity.
In the utility model, the direction of an infrared probe of the infrared temperature measurement module is fixed, and the single battery in the battery pack is covered only by moving; as another embodiment, the direction of the infrared probe is not fixed, that is, the single battery in the battery pack is covered by a rotating mode, so that the moving time of the sliding guide rail can be reduced.
The temperature measuring device of the battery pack also comprises a driving mechanism, wherein the driving mechanism is connected with the fixing component and the infrared temperature measuring module; the driving mechanism can generate first power and transmit the first power to the fixing assembly; the driving mechanism can generate second power and transmit the second power to the infrared temperature measurement module; the infrared temperature measurement module can move under the action of the first power and the second power so as to cover the single batteries in the battery pack and detect temperature information of the single batteries in a preset proportion in the battery pack.
In the embodiment of the utility model, the driving mechanism comprises power equipment and a transmission structure, one end of the transmission structure is connected with the power equipment, and the other end of the transmission structure is connected with a fixing assembly and an infrared temperature measurement module; the transmission mechanism transmits first power generated by the power equipment to the sliding guide rail of the fixed assembly and drives the sliding guide rail to move; the transmission mechanism transmits second power generated by the power equipment to the infrared temperature measurement module and drives the infrared temperature measurement module to move relative to the sliding guide rail.
More specifically, the power device may be two motors, a first motor and a second motor, respectively; the first motor generates first power according to a first control instruction, the forward rotation and the reverse rotation of the first motor drive the sliding guide rail to reciprocate, the second motor generates second power according to a second control instruction, the forward rotation and the reverse rotation of the second motor drive the infrared temperature measuring module to reciprocate, and in the embodiment of the utility model, the first motor drives the sliding guide rail to reciprocate along a first direction; the second motor drives the infrared temperature measuring module to reciprocate along the second direction.
In the embodiment of the utility model, the power equipment is two motors, and the control is simple, but the cost is higher. As other embodiments, the power equipment can also have only one motor, namely, the motor is controlled to generate first power and second power in a time-sharing multiplexing mode so as to respectively control the sliding guide rail and the infrared temperature measuring module of the fixed assembly; the implementation is low in cost and relatively complex to control.
The utility model does not limit the setting position of the driving mechanism, and the driving mechanism can be used as a movable part to be connected when the temperature measurement is needed, or can be used as a fixed part to be directly fixed on the outer wall surface of the shell of the battery pack or the inner wall surface of the shell of the battery pack.
Example two
A plurality of single batteries are arranged in a shell of the battery pack side by side, and the battery pack also comprises a fixing assembly and an infrared temperature measurement module;
the fixing component is fixedly connected with the shell of the battery pack;
the infrared temperature measurement module is arranged in the battery pack; the infrared temperature measurement module is movably connected with the fixed assembly, and the infrared temperature measurement module can be used for movably detecting temperature information of single batteries with preset proportion in the battery pack.
The specific structure and working principle of the fixing assembly and the infrared temperature measuring module in the present utility model are described in detail in the first embodiment, and will not be described here again.
In summary, the temperature measuring device of the battery pack and the battery pack solve the problems of large NTC detection error and small range through the infrared temperature measuring technology; and the infrared temperature measurement module is driven to move by the movement of the sliding guide rail in the fixed assembly, so that the full coverage of the temperature sampling point in the plane is realized, and the temperature sampling coverage is increased. Therefore, the utility model effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.
Claims (7)
1. A temperature measurement device of a battery pack, comprising: a fixed component and an infrared temperature measurement module;
the fixing component is fixedly connected with the shell of the battery pack;
the infrared temperature measurement module is arranged in the battery pack; the infrared temperature measuring module is movably connected with the fixed assembly, and can be used for movably detecting the temperature information of the single batteries with preset proportion in the battery pack; the fixed assembly comprises a fixed guide rail and a sliding guide rail;
the fixed surface of the fixed guide rail is fixedly connected with the shell of the battery pack, and the moving surface of the fixed guide rail is movably connected with the sliding guide rail; the sliding guide rail can move relatively on the guide rail of the fixed guide rail;
the infrared temperature measuring module moves relative to the sliding guide rail.
2. The temperature measuring device of a battery pack according to claim 1, wherein the fixed rail and the sliding rail are perpendicular to each other.
3. The device according to any one of claims 1-2, further comprising a drive mechanism connecting the stationary assembly and the infrared temperature measurement module; the driving mechanism can generate first power and transmit the first power to the fixing assembly; the driving mechanism can generate second power and transmit the second power to the infrared temperature measurement module; the infrared temperature measuring module can move under the action of the first power and/or the second power.
4. The temperature measuring device of a battery pack according to any one of claims 1 to 2, wherein the fixing member is fixedly connected to an inner wall surface of a case of the battery pack.
5. The device according to claim 1, wherein the infrared temperature measuring module sensor is embedded in and movable within a rail of the slide rail.
6. The device for measuring the temperature of the battery pack according to claim 1, wherein the infrared temperature measuring module adopts MLX90614.
7. A battery pack in which a plurality of unit cells are arranged side by side in a case, characterized by comprising the temperature measuring device of the battery pack according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223165661.9U CN219714553U (en) | 2022-11-25 | 2022-11-25 | Temperature measuring device of battery pack and battery pack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223165661.9U CN219714553U (en) | 2022-11-25 | 2022-11-25 | Temperature measuring device of battery pack and battery pack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219714553U true CN219714553U (en) | 2023-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223165661.9U Active CN219714553U (en) | 2022-11-25 | 2022-11-25 | Temperature measuring device of battery pack and battery pack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219714553U (en) |
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2022
- 2022-11-25 CN CN202223165661.9U patent/CN219714553U/en active Active
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