Air-cooled battery pack anti-condensation device, battery pack and power device

Abstract

The utility model provides an anti-condensation device for an air-cooled battery pack, the battery pack and a power device. The utility model relates to an air-cooled battery pack anti-condensation device, which comprises a dehumidification device, an air-cooled battery pack, an air-cooled battery pack, an air-cooled battery pack, an air-cooled battery pack, an air-cooled battery pack, an air-cooled battery pack and an air-cooled battery pack, the heating cavity is provided with an air inlet communicated with the outside of the battery pack, and a heating device is arranged in the heating cavity to heat air entering the heating cavity; an air outlet of the cooling cavity is communicated with the interior of the battery pack, and a cooling device is arranged in the cooling cavity to cool air entering the cooling cavity. According to the anti-condensation device for the air-cooled battery pack, the use quality of the air-cooled battery pack can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of battery packs, in particular to a condensation prevention device for an air-cooled battery pack. The utility model also relates to a battery pack provided with the above-mentioned condensation prevention device for an air-cooled battery pack, and a power device provided with the above-mentioned battery pack. Background Art

[0002] As a core component of electric vehicles, the performance and stability of power battery packs are directly related to the cruising range, safety and user experience of the whole vehicle. In thermal management technology, the air-cooled system has been widely used in various application scenarios due to its high cost-effectiveness, flexible design, easy maintenance and other characteristics. By optimizing the air flow path and using the powerful air flow generated by the fan, an efficient heat exchange network is formed inside the battery pack, effectively reducing the heat generated during the charging and discharging process of the battery pack, ensuring that the battery pack operates within a suitable temperature range, thereby extending the battery life and improving the system efficiency.

[0003] However, despite the many advantages of the air-cooled system, the air composition in the natural environment is complex, especially under the condition of high humidity, and the water vapor in the air has become a non-negligible factor. When the air containing water vapor is driven by the fan and flows rapidly through the inside of the battery pack, due to the complexity of the internal structure of the battery pack and the temperature difference between battery modules, the local temperature drops suddenly, forming a so-called "cold spot". When these low-temperature areas meet the high-temperature and high-humidity air and the air temperature drops below its dew point, the water vapor will condense into liquid water, that is, the condensation phenomenon.

[0004] In this process, with the accumulation of use time, the water vapor turns into condensation and accumulates into liquid water, adhering to the surfaces of electrical components and connectors, causing circuit corrosion, making the insulation reliability worse, and even having the risk of causing a short circuit of the battery pack, which is not conducive to improving the use quality of the battery pack. Summary of the Utility Model

[0005] In view of this, the utility model aims to propose a condensation prevention device for an air-cooled battery pack to improve the use quality of the air-cooled battery pack.

[0006] To achieve the above object, the technical solution of the utility model is realized as follows:

[0007] A condensation prevention device for an air-cooled battery pack, comprising:

[0008] A dehumidification device, the dehumidification device has a receiving cavity, and the receiving cavity is separated by a partition board with communication holes into a mutually communicated heating cavity and a cooling cavity;

[0009] The heating cavity has an air inlet communicating with the outside of the battery pack, and a heating device is provided in the heating cavity to heat the air entering the heating cavity;

[0010] The air outlet of the cooling chamber communicates with the interior of the battery pack, and a cooling device is provided in the cooling chamber to cool the air entering the cooling chamber.

[0011] Furthermore, the heating device includes a plurality of heating units arranged on the partition plate, and fins provided on the heating units, and the fins of the heating units in adjacent two columns are arranged in a staggered manner.

[0012] Furthermore, the heating unit is a thermoelectric semiconductor sheet.

[0013] Furthermore, a water outlet communicating with the outside is provided at the bottom of the cooling chamber.

[0014] Furthermore, the cooling device includes a plurality of cooling units arranged obliquely downward from the communication hole towards the water outlet.

[0015] Furthermore, the cooling unit is a thermoelectric semiconductor sheet.

[0016] Furthermore, the bottom of the heating chamber is arranged to slope upward from the air inlet of the heating chamber towards the communication hole;

[0017] The bottom of the cooling chamber is arranged to slope downward from the communication hole towards the air outlet of the cooling chamber.

[0018] Furthermore, a fan is provided on the communication hole.

[0019] Compared with the prior art, the present utility model has the following advantages:

[0020] For the air-cooled battery pack anti-condensation device of the present utility model, through the setting of the dehumidification device, with the cooperation of the mutually communicating heating chamber and cooling chamber, the air entering the heating chamber is heated by the heating device, and the air entering the cooling chamber is cooled by the cooling device, and the water vapor in the air is condensed into liquid water, so that the air entering the battery pack can be pre-dehumidified, the humidity of the air entering the pack is reduced, which helps to prevent condensation on the surfaces of the electrical components in the air-cooled battery pack, and thus helps to improve the use safety and use quality of the battery pack.

[0021] By providing fins on the heating units and arranging the fins in a staggered manner, the air can be heated by dispersed flow, the heating efficiency can be improved, and thus the air can be heated sufficiently.

[0022] Making the heating unit a thermoelectric semiconductor sheet is conducive to the processing and manufacturing of the heating device, and can provide a better heating effect, which is conducive to design and implementation.

[0023] Making the bottom of the cooling chamber be provided with a water outlet is conducive to the discharge of the cooling water formed after the condensation of the water vapor in the cooling chamber, which is conducive to design and implementation.

[0024] The cooling unit is inclined, so that the water vapor in the cooling cavity is fully condensed, which helps to better reduce the humidity of the air in the cooling cavity. The structure is simple and is conducive to design and implementation.

[0025] The cooling unit is a thermoelectric semiconductor sheet, which is conducive to the processing and manufacturing of the cooling device and can provide a better cooling effect, and is conducive to design and implementation.

[0026] The bottom of the heating cavity is inclined upward, which helps the heated air to gather and pass through the communication hole. The bottom of the heating cavity is inclined upward, so that the cross-section of the heating cavity gradually becomes smaller from the air inlet to the communication hole, which helps the air to be better heated. The bottom of the cooling cavity is inclined downward, which helps the condensed water to gather and drain. The cross-section of the cooling cavity gradually becomes larger from the communication hole to the air outlet of the cooling cavity, which helps the air to fully contact with the cooling unit and is conducive to the condensation and discharge of the water vapor in the air.

[0027] The setting of the fan helps to increase the air flow speed from the heating cavity to the cooling cavity, and is conducive to design and implementation.

[0028] The present utility model also provides a battery pack, in which the above-mentioned air-cooled battery pack anti-condensation device is provided.

[0029] The present utility model also provides a power device, in which the above-mentioned battery pack is provided.

[0030] The battery pack and the power device of the present utility model have the same beneficial effects as the above-mentioned air-cooled battery pack anti-condensation device compared with the prior art, so they will not be described in detail here. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] The drawings constituting a part of the present utility model are used to provide a further understanding of the present utility model. The schematic embodiments and descriptions thereof of the present utility model are used to explain the present utility model and do not constitute an improper limitation of the present utility model. In the drawings:

[0032] Figure 1 is a schematic structural diagram of the air-cooled battery pack anti-condensation device according to an embodiment of the present utility model;

[0033] Figure 2 is a sectional view of the air-cooled battery pack anti-condensation device according to an embodiment of the present utility model;

[0034] Figure 3 is a schematic diagram of the air flow direction of the heating cavity of the air-cooled battery pack anti-condensation device according to an embodiment of the present utility model;

[0035] Figure 4Schematic diagram of the air flow direction in the cooling chamber of the anti-condensation device for the air-cooled battery pack according to the embodiment of the present invention;

[0036] Explanation of reference numerals:

[0037] 1, dehumidification device; 2, partition; 3, communication hole;

[0038] 4, heating chamber;

[0039] 401, air inlet;

[0040] 5, cooling chamber;

[0041] 501, air outlet; 502, water outlet;

[0042] 6, heating device; 7, cooling device; 8, fan. Detailed implementation manners

[0043] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0044] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "outer", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0045] Taking the battery pack where the air-cooled battery pack anti-condensation device described in the present invention is located as an example, the orientation terms such as "upper, lower, left, right, front, rear" used in the embodiment are defined based on the up-down direction (also known as the height direction, or the overall package Z direction), left-right direction (also known as the width direction, or the overall package Y direction), and front-rear direction (also known as the length direction, or the overall package X direction) of the battery pack. "Inner" and "outer" are defined based on the contour of the corresponding component. For example, "inner" and "outer" defined based on the contour of the battery pack, with the side closer to the middle of the battery pack being "inner" and vice versa being "outer".

[0046] In addition, in the description of the present utility model, unless otherwise clearly defined, the terms "installation", "connection", "connection", and "connector" shall be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood in combination with specific situations.

[0047] The present utility model will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0048] Embodiment 1

[0049] This embodiment relates to an air-cooled battery pack anti-condensation device, aiming to prevent the generation of condensation inside the battery pack through the anti-condensation device, thereby improving the usage quality of the battery pack.

[0050] In terms of the overall structure, as Figures 1 to 2 shown, the air-cooled battery pack anti-condensation device of this embodiment includes a dehumidification device 1. The dehumidification device 1 has a receiving cavity, and the receiving cavity is separated by a partition 2 with a communication hole 3 into a mutually communicating heating cavity 4 and a cooling cavity 5.

[0051] Among them, the heating cavity 4 has an air inlet 401 communicating with the outside of the battery pack, and a heating device 6 is provided in the heating cavity 4 to heat the air entering the heating cavity 4.

[0052] The air outlet 501 of the cooling cavity 5 communicates with the inside of the battery pack, and a cooling device 7 is provided in the cooling cavity 5 to cool the air entering the cooling cavity 5.

[0053] With the above settings, in the air-cooled battery pack anti-condensation device of this embodiment, through the setting of the dehumidification device 1, with the cooperation of the mutually communicating heating cavity 4 and cooling cavity 5, the air entering the heating cavity 4 is heated by the heating device 6, and the air entering the cooling cavity is cooled by the cooling device 7, and the water vapor in the air is condensed into liquid water, so that the air entering the battery pack can be pre-dehumidified, the humidity of the air entering the pack is reduced, which helps to prevent condensation from forming on the surfaces of the electrical components inside the air-cooled battery pack, thus facilitating the improvement of the usage safety and usage quality of the battery pack.

[0054] It should be noted that the battery pack in this embodiment is an air-cooled battery pack, and the air-cooled battery pack anti-condensation device in this embodiment is arranged upstream of the air inlet of the air-cooled battery pack, and the air entering the air inlet first needs to pass through the air-cooled battery pack anti-condensation device in this embodiment.

[0055] Combined with Figure 1 and Figure 2As shown, the dehumidification device 1 in this embodiment is a structure with a receiving cavity provided on the housing at one end of the air inlet of the air-cooled battery pack. A partition 2 is provided in the dehumidification device 1. The partition 2 divides the receiving cavity of the dehumidification device 1 into a heating cavity 4 and a cooling cavity 5. A communication hole 3 is provided on the partition 2. The communication hole 3 connects the heating cavity 4 and the cooling cavity 5. The air inlet of the air-cooled battery pack (i.e., the air outlet 501 of the cooling cavity 5) and the communication hole 3 are located at both ends of the cooling cavity 5 respectively.

[0056] Specifically, in this embodiment, as an exemplary structure, in combination with Figure 1 , Figure 2 and Figure 3 shown, in order to improve the heating efficiency of the heating device 6, the heating device 6 of the anti-condensation device for the air-cooled battery pack in this embodiment includes a plurality of heating units arranged on the partition 2, and fins extending outward from the surface of the partition on the heating units. The fins of adjacent two columns are arranged staggeredly. By arranging the fins on the heating units and making the fins arranged staggeredly, the air can be heated by dispersed flow, improving the heating efficiency, so that the air can be heated sufficiently.

[0057] More specifically, the heating unit in this embodiment can be, for example, a thermoelectric semiconductor chip. The heating units extend outward from the partition 2, and the thermoelectric semiconductor chips of adjacent two columns are arranged staggeredly, that is, the heating units of the latter column are aligned with the gaps between two adjacent heating units of the previous column, so that the air flowing into the heating cavity 4 can flow evenly through the heating units, so as to better heat the air in the heating cavity 4.

[0058] It should be noted that the thermoelectric semiconductor chip is composed of N-type and P-type semiconductors. Based on the thermoelectric effect, when direct current flows from the P-type semiconductor to the N-type semiconductor, the thermoelectric semiconductor chip releases heat to heat the air flowing through the heating cavity 4. Making the heating unit a thermoelectric semiconductor chip is beneficial to the processing and manufacturing of the heating device 6 and can provide a better heating effect, which is beneficial to the design and implementation.

[0059] In order to better discharge the condensed water in the cooling cavity 5, in combination with Figure 1 , Figure 2 and Figure 4 shown, a water outlet 502 communicating with the outside is provided at the bottom of the cooling cavity 5 of the anti-condensation device for the air-cooled battery pack in this embodiment. Providing a water outlet 502 at the bottom of the cooling cavity 5 is beneficial to the discharge of the cooling water formed after the water vapor in the cooling cavity 5 condenses, which is beneficial to the design and implementation.

[0060] Specifically, the water outlet 502 is provided upstream of the air outlet 501 where the cooling cavity 5 communicates with the battery pack, so as to prevent the condensed water from accumulating too much and entering the battery pack. When the condensed water in the cooling cavity 5 is generated, through the setting of the water outlet 502, it can be directly discharged from the dehumidification device 1 via the water outlet 502.

[0061] In order to better cool the air entering the cooling chamber 5 to promote the generation of condensed water, as combined with Figure 1 , Figure 2 and Figure 4 shown, the cooling device 7 of the air-cooled battery pack anti-condensation device in this embodiment includes a number of cooling units arranged obliquely downward from the self-connecting holes 3 towards the water outlet 502. The inclined setting of the cooling units enables the water vapor in the cooling chamber 5 to be fully condensed, which helps to better reduce the humidity of the air in the cooling chamber 5. The structure is simple and conducive to design and implementation.

[0062] Specifically, the cooling unit in this embodiment is a thermoelectric semiconductor chip. The direct current of the cooling unit flows from the N-type semiconductor to the P-type semiconductor. The thermoelectric semiconductor chip absorbs heat to cool the air flowing through the cooling chamber 5, causing the water vapor in the air in the cooling chamber 5 to condense into condensed water. Preferably, a hydrophobic layer can be coated on the surface of the cooling unit in this embodiment to facilitate the flow of condensed water. Making the cooling unit a thermoelectric semiconductor chip is conducive to the processing and manufacturing of the cooling device 7 and can provide a better cooling effect, which is conducive to design and implementation.

[0063] In order to better facilitate the heating of the air in the heating chamber 4 and the flow of cooling water in the cooling chamber 5, the bottom of the heating chamber 4 of the air-cooled battery pack anti-condensation device in this embodiment is arranged obliquely upward from the air inlet 401 of the heating chamber 4 towards the connecting hole 3, and the bottom of the cooling chamber 5 is arranged obliquely downward from the connecting hole 3 towards the air outlet 501 of the cooling chamber 5. The upward inclined setting of the bottom of the heating chamber 4 helps the heated air to gather and pass through the connecting hole 3. And the upward inclined setting of the bottom of the heating chamber 4 makes the cross-section of the heating chamber 4 gradually smaller from the air inlet 401 to the connecting hole 3, which helps to better heat the air. The downward inclined setting of the bottom of the cooling chamber 5 helps the collection and discharge of condensed water, and makes the cross-section of the cooling chamber 5 gradually larger from the connecting hole 3 to the air outlet 501 of the cooling chamber 5, which helps the air to fully contact the cooling unit and is conducive to the condensation and discharge of water vapor in the air.

[0064] In order to make the air flow in the dehumidification device 1 smoother, a fan 8 is provided on the connecting hole 3 in the dehumidification device 1 in this embodiment. Through the setting of the fan 8, it helps to increase the air flow speed from the heating chamber 4 to the cooling chamber 5, which is conducive to design and implementation.

[0065] When the air-cooled battery pack anti-condensation device in this embodiment is in use, air first enters the heating chamber 4 through the air inlet 401. Under the action of the heating device 6, the temperature rises, and it becomes heated air with high temperature and high humidity. Under the action of the fan 8 in the communication hole 3, the heated air flows to the cooling chamber 5. Under the action of the cooling device 7, the temperature drops, and the heated air becomes condensed water on the surface of the cooling unit. Through the setting of the inclined downward cooling unit and the water outlet 502 at the bottom of the cooling chamber 5, the condensed water is discharged out of the pack through the water outlet 502. At the same time, the cooled air leads to the inside of the pack through the air outlet 501 of the cooling chamber 5, so that dry air can be input into the pack to cool the electrical components in the battery pack.

[0066] For the air-cooled battery pack anti-condensation device of this embodiment, through the setting of the partition plate 2 in the dehumidifying device 1, the accommodation chamber is divided into a mutually connected heating chamber 4 and a cooling chamber 5. By setting a heating device 6 in the heating chamber 4 to heat the incoming air and a cooling device 7 in the cooling chamber 5 to cool the air entering the cooling chamber 5, the water vapor in the high-temperature and high-humidity air output from the heating chamber 4 can be condensed into condensed water and discharged through the water outlet 502, and dry and low-temperature air can be output to the inside of the battery pack to cool the electrical components in the battery pack, avoiding the generation of condensation in the battery pack, thereby improving the use safety and use quality of the battery pack. Embodiment Two

[0067] This embodiment relates to a battery pack, and the air-cooled battery pack anti-condensation device in Embodiment One is provided in this battery pack.

[0068] The battery pack of this embodiment is an air-cooled battery pack. Through the setting of the air-cooled battery pack anti-condensation device in Embodiment One, the battery pack can avoid the use risk of the battery pack caused by the corrosion of electrical components due to the generation of condensation in the battery pack, which is beneficial to improving the use safety and use quality of the battery pack.

[0069] Embodiment Three

[0070] This embodiment relates to a power device, and the battery pack in Embodiment Two is provided in this power device.

[0071] For the power device of this embodiment, through the setting of the battery pack in Embodiment Two, the use safety and use quality of the battery pack are effectively guaranteed, which is beneficial to improving the use safety and use quality of the power device.

[0072] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air-cooled battery pack anti-condensation device, characterized in that, Comprising: A dehumidifying device having a receiving cavity, and the receiving cavity is separated by a partition plate with a communication hole into a mutually communicating heating cavity and a cooling cavity; The heating cavity has an air inlet communicating with the outside of the battery pack, and a heating device is provided in the heating cavity to heat the air entering the heating cavity; The air outlet of the cooling cavity communicates with the inside of the battery pack, and a cooling device is provided in the cooling cavity to cool the air entering the cooling cavity.

2. The air-cooled battery pack anti-condensation device according to claim 1, wherein: The heating device includes a plurality of heating units arranged on the partition plate, and fins provided on the heating units, and the fins in adjacent two columns are arranged in a staggered manner.

3. The air-cooled battery pack anti-condensation device according to claim 2, wherein: The heating unit is a thermoelectric semiconductor chip.

4. The air-cooled battery pack anti-condensation device according to claim 1, wherein: A water outlet communicating with the outside is provided at the bottom of the cooling cavity.

5. The air-cooled battery pack anti-condensation device according to claim 4, wherein: The cooling device includes a plurality of cooling units arranged obliquely downward from the communication hole towards the water outlet.

6. The air-cooled battery pack anti-condensation device according to claim 5, wherein: The cooling unit is a thermoelectric semiconductor chip.

7. The air-cooled battery pack anti-condensation device according to claims 1-6, characterized in that: The bottom of the heating cavity is inclined upward from the air inlet of the heating cavity towards the communication hole; The bottom of the cooling cavity is inclined downward from the communication hole towards the air outlet of the cooling cavity.

8. The air-cooled battery pack anti-condensation device according to claim 1, wherein: A fan is provided on the communication hole.

9. A battery pack, wherein: The air-cooled battery pack anti-condensation device according to any one of claims 1-8 is provided in the battery pack.

10. A power device, wherein: The battery pack according to claim 9 is provided in the power device.

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