A battery pack anti-condensation device

Abstract

The utility model discloses an anti-condensation device for a battery pack, comprising an explosion-proof valve, a liquid cooling plate and an anti-condensation humidity regulating sheet; the explosion-proof valve is used to be installed on a battery box to connect the inside and outside of the battery box; the liquid cooling plate is located at the bottom of a battery cell in the battery box; the anti-condensation humidity regulating sheet is arranged in the battery box, the anti-condensation humidity regulating sheet is located between the battery box and a side wall of the battery cell, a gap for circulating air is also arranged between the battery box and the side wall of the battery cell, the liquid cooling plate also cools the battery cell, reduces the temperature difference between the inside and outside of the battery box, and cooperates with the anti-condensation humidity regulating sheet to play a good anti-condensation function.

Description

Technical Field

[0001] The utility model relates to the technical field of batteries, in particular to a battery pack anti-condensation device. Background Art

[0002] In the field of energy storage, multiple battery modules are assembled into a battery pack. Multiple battery packs are installed in the storage compartment through the cabin mounting frame. The battery pack is usually equipped with a breathing balance valve component or an explosion-proof valve for communicating the internal and external air pressures. The membrane material inside the valve can only prevent liquid water, and external moisture can enter the battery pack box. Affected by the relative humidity and the temperature difference between the inside and outside, the dew point temperature inside the box will increase. Under normal circumstances, the greater the humidity and the higher the temperature difference, the easier it is for condensation to form. Condensation will cause metal oxidation and rusting of the product, reduce insulation, shorten life, and reduce safety and reliability. Low, and the battery pack generates a lot of heat during operation, which will cause the temperature of the battery cell to rise, making it difficult to effectively avoid the internal condensation problem. In the prior art, such as patent CN216750135U, an anti-condensation structure for an electric marine power battery box, discloses a condensation control material made of a sheet of soft material pasted on the inner wall surface of the inner cavity of the lower box body by structural adhesive, so as to play an anti-condensation role. However, as the battery pack generates a lot of heat during long-term operation, the temperature difference between the inside and outside of the battery pack is large, which is not conducive to further improving the anti-condensation performance of the battery pack. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned defects or problems existing in the background technology and provide a battery pack anti-condensation device.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A battery pack anti-condensation device comprises an explosion-proof valve, a liquid cooling plate and an anti-condensation humidity-regulating sheet; the explosion-proof valve is used to be installed on a battery case to connect the inside and outside of the battery case; the liquid cooling plate is located at the bottom of a battery cell in the battery case; the anti-condensation humidity-regulating sheet is arranged in the battery case, the anti-condensation humidity-regulating sheet is located between the battery case and a side wall of the battery cell, and a gap for air circulation is also arranged between the battery case and the side wall of the battery cell.

[0006] In certain embodiments of the utility model, the battery box includes an upper box body and a lower bottom plate, the battery cells are installed on the lower bottom plate, the lower bottom plate is provided with a liquid cooling plate, and the explosion-proof valve is installed on the side wall of the upper box body.

[0007] In some embodiments of the utility model, the side wall of the upper box body is provided with a mounting opening, the mounting opening is provided with a mounting plate, the mounting plate is mounted in the mounting opening by bolts, and the mounting plate is provided with a protrusion.

[0008] In certain embodiments of the utility model, a breathing balance valve is provided on one side of the explosion-proof valve, and the breathing balance valve is installed on the battery box.

[0009] Some embodiments of the utility model further include a fire fighting device and a detector. The detector is arranged on the battery box, and the detection end of the detector is located in the battery box.

[0010] In certain embodiments of the utility model, the detector is configured as a fire detection device, the fire fighting device is configured as a fire fighting sprinkler, and the fire fighting sprinkler is mounted on the battery box.

[0011] In some embodiments of the present invention, an insulating sheet is provided on the top of the battery core.

[0012] In certain embodiments of the present invention, an aerogel pad is installed between the insulating sheet and the inner wall of the battery box.

[0013] From the above description of the utility model, it can be seen that compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. The liquid cooling plate cools down the battery cells, reduces the temperature difference between the inside and outside of the battery box, and cooperates with the anti-condensation humidity regulating sheet to achieve better anti-condensation function. At the same time, the safety performance of the battery pack is good.

[0015] 2. The battery cells in the battery pack are located on the top of the liquid cooling plate, so that the liquid cooling plate does not directly contact a large amount of air, effectively reducing condensation caused by a large amount of air directly contacting the liquid cooling plate. The anti-condensation humidity regulating sheet is located between the battery case and the side wall of the battery cell. A gap for air circulation is also provided between the battery case and the side wall of the battery cell. The anti-condensation humidity regulating sheet plays a role in preventing fog and controlling humidity in the circulating air in the battery case. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Description of main reference numerals:

[0019] 1. Battery box, 10. Battery cell, 11. Upper box, 12. Lower base plate, 13. MSD manual maintenance switch, 14. Connection socket, 15. Communication interface, 16. BMU battery management system, 17. Installation opening, 18. Installation plate, 2. Explosion-proof valve, 3. Liquid cooling plate, 4. Anti-condensation humidity regulating sheet, 5. Insulating sheet, 61. First installation hole, 62. Second installation hole. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are preferred embodiments of the utility model and should not be regarded as excluding other embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0021] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise clearly defined, the use of terms such as "first", "second" or "third" etc. is to distinguish different objects rather than to describe a specific order.

[0022] In the claims, specification and the above-mentioned drawings of the utility model, unless otherwise explicitly defined, directional words, such as the terms "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "inside", "outside", "up", "down", "front", "back", "left", "right", "clockwise", "counterclockwise", etc., indicating directions or positional relationships are based on the directions and positional relationships shown in the drawings, and are only for the convenience of describing the invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction or be constructed and operated in a specific direction, and therefore cannot be understood as limiting the specific protection scope of the invention.

[0023] In the claims, specification and the above drawings of the utility model, unless otherwise clearly defined, if the term "fixed connection" or "fixed connection" is used, it should be understood in a broad sense, that is, any connection method without a displacement relationship and relative rotation relationship between the two, that is to say, including non-detachable fixed connection, detachable fixed connection, integrated connection and fixed connection through other devices or elements.

[0024] In the claims, specification and drawings of the present utility model, if the terms "include", "have" and their variations are used, they are intended to mean "including but not limited to".

[0025] Example 1, see Figure 1 :

[0026] A battery pack anti-condensation device, comprising an explosion-proof valve 2, a liquid cooling plate 3 and an anti-condensation humidity regulating sheet 4;

[0027] The explosion-proof valve 2 is used to be installed on the battery box 1 to connect the inside and outside of the battery box 1. The explosion-proof valve 2 plays the role of ventilation, waterproof and explosion-proof, which is conducive to improving safety performance;

[0028] The battery box 1 includes an upper box 11 and a lower bottom plate 12. The upper box 11 is fixed to the lower bottom plate 12 by bolts. The explosion-proof valve 2 is installed on the side wall of the upper box 11. The battery cell 10 is installed on the lower bottom plate 12. The lower bottom plate 12 is provided with a liquid cooling plate 3. The liquid cooling plate 3 is used for heat exchange with the battery cell 10, which can reduce the temperature of the battery cell 10 and reduce the temperature difference between the inside and outside of the battery box 1. It is beneficial to reduce the temperature of the battery cell 10 when the battery cell 10 is heated, and reduce the temperature difference between the inside and outside of the battery box 1, thereby reducing the condensation phenomenon caused by the temperature difference. In this embodiment, the lower bottom plate 12 and the liquid cooling plate 3 are separately provided, and the liquid cooling plate 3 is installed on the lower bottom plate 12.

[0029] The anti-condensation humidity-regulating sheet 4 is arranged in the battery case 1, and the anti-condensation humidity-regulating sheet 4 is located between the battery case 1 and the side wall of the battery cell 10. A gap for circulating air is also arranged between the battery case 1 and the side wall of the battery cell 10. The anti-condensation humidity-regulating sheet 4 plays an anti-fog and humidity-control role in the battery case 1. It can be understood that the anti-condensation humidity-regulating sheet 4 is located between the inner side wall of the upper case 11 and the side wall of the battery cell 10;

[0030] The anti-condensation humidity-control sheet 4 adopts a fiber humidity-control sheet. It can be understood that the anti-fog humidity-control fiber material commonly used on the market is specifically adopted. When the temperature and humidity change, the HCCF anti-fog humidity-control fiber material can automatically realize the "bidirectional" reversible moisture absorption and release function. The moisture-absorbing fiber skeleton is used as a water delivery pipeline. The water reservoir effect formed by the microporous material ensures the bidirectional reversibility of the material, can efficiently control the humidity in the environment, and effectively inhibit the generation of fog and condensation.

[0031] As an implementation mode, a battery pack anti-condensation device is applied in an energy storage device, which effectively reduces condensation in the energy storage device and helps to ensure the safety performance of the energy storage device. The energy storage device includes a plurality of energy storage cabinets, which include a plurality of battery packs for energy storage. The battery pack includes an anti-condensation device, which is arranged in a battery box 1, and a battery cell 10 is installed in the battery box 1.

[0032] Embodiment 2:

[0033] Example 1 is repeated, but an insulating sheet 5 is provided on the top of the battery cell 10, and an aerogel pad is installed between the insulating sheet 5 and the inner wall of the battery box 1, and the insulating sheet 5 is used to effectively ensure the safety, stability and electrical insulation performance of the battery cell 10, and the aerogel pad has heat insulation and buffering functions;

[0034] It can be understood that the battery cell 10 is provided with an MSD manual maintenance switch 13, a communication interface 15 for communication and a connection socket 14 for external connection. The communication interface 15, the connection socket 14 and the MSD manual maintenance switch 13 are arranged on the side wall at one end of the upper box body 11, and the communication interface 15, the connection socket 14 and the MSD manual maintenance switch 13 are respectively connected to the battery cell 10 through a wiring harness.

[0035] The battery cell 10 includes a battery module composed of several batteries, a BMU battery management system 16, a thermal management system, and a sensor. As an implementation mode, the thermal management system and the sensor are arranged in the battery module, and the BMU battery management system 16 is arranged outside the battery module. The BMU battery management system 16 is connected to the battery module through a battery module wiring harness.

[0036] In some embodiments, the BMU battery management system 16 is electrically connected to the controller, and the temperature data of the battery cell 10 detected by the sensor is transmitted to the controller. The controller is electrically connected to the liquid cooling plate 3. The controller controls the liquid cooling plate 3 according to the temperature data of the battery cell 10, cools the battery cell 10 within a suitable operating temperature range of the battery cell 10, and reduces the temperature difference between the inside and outside of the battery box 1. The liquid cooling plate 3 has good cooling sensitivity and low power, and also reduces the excessive temperature difference caused by overcooling of the liquid cooling plate 3 due to high power operation of the liquid cooling plate 3, reduces condensation generation, and has a better anti-condensation effect. Preferably, in some embodiments, when the liquid cooling plate 3 is working, its temperature is 2-6° lower than the temperature of the battery cell 10.

[0037] In some embodiments, the side wall of the upper box body 11 is provided with an installation opening 17, and the installation opening 17 is provided with a mounting plate 18, and the mounting plate 18 is installed in the installation opening 17 by bolts; the mounting plate 18 is provided with a protrusion, preferably, there are two installation openings 17, and the installation openings 17 are arranged corresponding to the mounting plates 18, and a BMU battery management system 16 is placed on the back of any mounting plate 18, and one side of the BMU battery management system 16 is located in the protrusion. A third mounting hole for installing an explosion-proof valve 2 and a fourth mounting hole for installing a communication interface 15 are also provided on one side of the mounting plate 18, and a connecting socket 14 and an MSD manual maintenance switch 13 are installed on the other mounting plate 18.

[0038] Embodiment 3:

[0039] Example 1 is repeated, but a breathing balance valve is provided on one side of the explosion-proof valve 2 , and the breathing balance valve is installed on the battery box 1 . Specifically, the breathing balance valve is installed on the side wall of the upper box 11 .

[0040] The utility model also includes a fire-fighting device and a detector, the detector is arranged on the battery box 1, the detection end of the detector is located in the battery box 1, and a first mounting hole 61 for mounting the fire-fighting device and a second mounting hole 62 for mounting the detector are formed on the side wall of the upper box 11. The detector is arranged as a fire detection device, the fire-fighting device is arranged as a fire-fighting nozzle, the fire-fighting nozzle is arranged in the first mounting hole 61, and the fire-fighting nozzle is connected to an external device equipped with a fire-extinguishing agent, so as to facilitate fire-fighting.

[0041] The description of the above specification and embodiments is used to explain the protection scope of the utility model, but does not constitute a limitation on the protection scope of the utility model. Through the enlightenment of the utility model or the above embodiments, ordinary technicians in this field can obtain modifications, equivalent replacements or other improvements to the embodiments of the utility model or part of the technical features thereof through logical analysis, reasoning or limited experiments, which should be included in the protection scope of the utility model.

Claims

1. A battery pack anti-condensation device, characterized in that: It includes an explosion-proof valve, a liquid cooling plate and an anti-condensation humidity-regulating sheet; the explosion-proof valve is used to be installed on the battery case to connect the inside and outside of the battery case; the liquid cooling plate is located at the bottom of the battery cell in the battery case; the anti-condensation humidity-regulating sheet is arranged in the battery case, the anti-condensation humidity-regulating sheet is located between the battery case and the side wall of the battery cell, and a gap for air circulation is also arranged between the battery case and the side wall of the battery cell.

2. The battery pack anti-condensation device according to claim 1, characterized in that: The battery box comprises an upper box body and a lower bottom plate, the battery cells are mounted on the lower bottom plate, the lower bottom plate is provided with a liquid cooling plate, and the explosion-proof valve is mounted on the side wall of the upper box body.

3. The battery pack anti-condensation device according to claim 2, characterized in that: The upper box body side wall is provided with a mounting opening, the mounting opening is provided with a mounting plate, the mounting plate is mounted on the mounting opening by bolts, and the mounting plate is provided with a protrusion.

4. The battery pack anti-condensation device according to claim 2, characterized in that: A breathing balance valve is arranged on one side of the explosion-proof valve, and the breathing balance valve is installed on the battery box.

5. The battery pack anti-condensation device according to claim 1, characterized in that: It also includes a fire-fighting device and a detector. The detector is arranged on the battery box, and the detection end of the detector is located in the battery box.

6. A battery pack anti-condensation device according to claim 5, characterized in that: The detector is configured as a fire detection device, the fire fighting device is configured as a fire sprinkler, and the fire sprinkler is mounted on the battery box.

7. A battery pack anti-condensation device according to any one of claims 1 to 6, characterized in that: An insulating sheet is provided on the top of the battery cell.

8. The battery pack anti-condensation device according to claim 7, characterized in that: An aerogel pad is installed between the insulating sheet and the inner wall of the battery box.

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