CN213583926U - Power battery box humidity indicating device and power battery box - Google Patents

Power battery box humidity indicating device and power battery box Download PDF

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Publication number
CN213583926U
CN213583926U CN202022758264.7U CN202022758264U CN213583926U CN 213583926 U CN213583926 U CN 213583926U CN 202022758264 U CN202022758264 U CN 202022758264U CN 213583926 U CN213583926 U CN 213583926U
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China
Prior art keywords
power battery
battery box
box
box body
indicating device
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CN202022758264.7U
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Chinese (zh)
Inventor
杨南
李松松
王保男
王云松
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FAW Jiefang Automotive Co Ltd
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FAW Jiefang Automotive Co Ltd
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    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Abstract

The utility model discloses a power battery box humidity indicating device and power battery box belongs to power battery technical field. The power battery box humidity indicating device comprises: the box body is internally provided with an accommodating cavity, the bottom or the side wall of the box body is provided with an air hole for communicating the outside of the box body with the accommodating cavity, and allochroic silica gel is placed in the accommodating cavity; the case lid, the lid is located the top of box, the case lid includes visual portion, in order to pass through visual portion observes allochroic silica gel's colour. The utility model provides a simple structure, cost are lower, need not to circular telegram and can adsorb power battery box humidity indicating device of the inside vapor of power battery box.

Description

Power battery box humidity indicating device and power battery box
Technical Field
The utility model relates to a power battery technical field especially relates to a power battery box humidity indicating device and power battery box.
Background
With the continuous promotion of energy conservation and emission reduction, new energy automobiles are more and more favored by users. One of the core components of the new energy automobile is a power battery. Power battery sets up in the power battery case, and the power battery case passes through breather valve and external environment intercommunication, keeps pressure balance with outside atmospheric pressure, and the power battery case realizes the sealed of box through the joint strip or sealed glue between its upper and lower box, according to the operating mode needs, and general sealing grade reaches more than IP 67.
In the actual use process, on one hand, condensation can be generated in the battery box due to the respiration of the respiration valve along with the change of the humidity and the temperature of the working environment around the battery box; on the other hand, due to the aging of the sealing rubber strips or the collision and penetration of the box body in the using process and other factors, the box body is sealed and loses efficacy, and when the vehicle wades or is drenched with rain, water enters the battery box. The existence of battery box water can lead to the increase of air humidity in the box, causes the corrosion of high-pressure pencil, electronic component in the battery box, and the temperature rise that exothermal leads to in the battery working process for steam strengthens the corrosion of metal parts. Can lead to functional failure behind the electronic component corrosion, for example, can lead to the grow of resistance behind the corrosion of high-voltage connecting row, the temperature rise becomes high when electric current passes through, has the risk that causes electric core thermal runaway, and in addition, the high-voltage connecting row of corrosion can lead to the high-voltage connecting row and other electronic parts's electric connection inefficacy, causes contact resistance's rising, leads to the battery to form high temperature hot spot in the normal work.
In summary, it is necessary to detect the humidity in the power battery box to prompt the user to repair or replace the power battery box in time, but in the prior art, the detection device for detecting the humidity in the power battery box is all detected by electronic components such as a sensor, for example, a patent with publication number CN107884520A and a patent name of a power battery box humidity early warning system, a patent with publication number CN202836775U and a patent name of a battery pack temperature and humidity monitoring system, and a patent with publication number CN203658883U and a patent name of an electric vehicle power battery pack temperature and humidity monitoring system, and the detection by the electronic components such as the sensor requires not only power-on but also higher cost of the detection components.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a simple structure, cost are lower, need not to circular telegram and can adsorb power battery box humidity indicating device and power battery box of the inside vapor of power battery box.
To achieve the purpose, the utility model adopts the following technical proposal:
a power cell box humidity indicating device comprising:
the box body is internally provided with an accommodating cavity, the bottom or the side wall of the box body is provided with an air hole for communicating the outside of the box body with the accommodating cavity, and allochroic silica gel is placed in the accommodating cavity;
the case lid, the lid is located the top of box, the case lid includes visual portion, in order to pass through visual portion observes allochroic silica gel's colour.
As an alternative of the humidity indicating device for the power battery box, a first mounting hole is formed in the box body, a second mounting hole is formed in the box cover, and the first mounting hole and the second mounting hole are correspondingly formed.
As an alternative of the humidity indicating device for the power battery box, a connecting platform is arranged at the edge of the top of the box body, and the first mounting hole is formed in the connecting platform.
As an alternative of the humidity indicating device for the power battery box, a sealing groove is formed in the top of the box cover.
As an alternative of the humidity indicating device for the power battery box, the box body, the box cover and the sealing groove are all rectangular.
As an alternative of the humidity indicating device of the power battery box, a white bakelite plate is adopted for the box body.
As an alternative to the above-mentioned humidity indicator for the power battery box, the box cover is made of transparent organic glass to form the visible part.
As an alternative of the humidity indicating device for the power battery box, the number of the air holes is multiple, and the air holes are distributed at the bottom of the box body in an array manner.
The utility model provides a power battery box, includes the battery box, still includes as above power battery box humidity indicating device, power battery box humidity indicating device locates the inside of battery box.
As an alternative of the power battery box, a viewing window for observing the color of the allochroic silica gel is arranged on the battery box body.
The utility model discloses an useful part lies in: the design has the box that holds the chamber and adorns color-changing silica gel, and set up the gas pocket on the box, so that the air admission that makes power battery incasement holds the intracavity, just so can judge the humidity condition of power battery incasement through color-changing silica gel's colour, moreover, the steam of power battery incasement can also be absorbed to color-changing silica gel, the steam of power battery incasement reduces the humidity of power battery incasement air, reduce the risk that electronic component takes place the corrosion in the power battery incasement, promote power battery's security performance.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of a humidity indicating device for a power battery box according to the present invention;
FIG. 2 is a schematic structural view of the middle box body of the present invention;
FIG. 3 is a schematic structural diagram of another perspective of the structure shown in FIG. 1 according to the present invention;
fig. 4 is an exploded schematic view of the humidity indicating device of the power battery box according to the embodiment of the present invention;
fig. 5 is a schematic side view of the structure shown in fig. 4 according to the present invention.
In the figure:
100. a power battery box humidity indicating device; 101. allochroic silica gel; 110. a box body; 111. air holes; 112. a first mounting hole; 113. connecting the platform; 120. a box cover; 121. a second mounting hole; 122. sealing the groove.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The meaning of the above terms in the present invention can be understood by those of ordinary skill in the art as the case may be.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "left", "right", and the like are used in the orientation or positional relationship shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
The utility model provides a power battery box humidity indicating device, fig. 1 is the utility model discloses the structure schematic diagram of well power battery box humidity indicating device embodiment, as shown in fig. 1, power battery box humidity indicating device 100 includes box 110 and case lid 120. Fig. 2 is a schematic structural diagram of a box body of the present invention, and as shown in fig. 2, a containing cavity is provided in the box body 110, and fig. 3 is a schematic structural diagram of another view angle of the structure shown in fig. 1 of the present invention, please refer to fig. 2 and fig. 3, the bottom or the side wall of the box body 110 is provided with an air hole 111 communicating the outside of the box body 110 and the containing cavity, in the present invention, as shown in fig. 2 and fig. 3, the air hole 111 is provided at the bottom of the box body 110, and in other embodiments, the air hole 111 may also be provided on the side wall of the box body. Fig. 4 is a schematic view of an exploded structure of the humidity indicating device of the power battery box of the present invention, please refer to fig. 2 and 4, and the color-changing silica gel 101 is placed in the accommodating cavity of the box body 110. The case cover 120 covers the top of the case body 110, and the case cover 120 includes a visible portion for observing the color of the allochromatic silica gel 101.
Power battery box humidity indicating device 100 installs the inside at the power battery box, air in the power battery box gets into in the box 110 from gas pocket 111, and contact with color-changing silica gel 101 in the box 110, make color-changing silica gel 101 discolour, the humidity of air in the power battery box is instructed to colour through color-changing silica gel 101, moreover, the steam of power battery box can also be absorbed to color-changing silica gel 101, reduce the humidity of power battery box air, reduce the risk that electronic component takes place the corrosion in the power battery box, promote power battery's security performance, and the power battery box is provided with a safety device.
For different humidity, the color-changing silica gel 101 can show different colors, so that a reference color comparison card can be manufactured to facilitate reading of a humidity value through the color of the color-changing silica gel 101. The specific manufacturing method comprises the following steps: the humidity indicating device 100 of the power battery box is placed in a humidity environment box, different temperature and humidity values are set, the color depth spectrum of the allochroic silica gel 101 is recorded, and a reference spectrogram is manufactured. When the power battery box works, the color of the allochroic silica gel 101 is observed through the power battery box humidity indicating device 100 installed in the power battery box, and the humidity condition in the power battery box is judged according to the color depth spectrum by combining the ambient temperature.
In one embodiment, the box body 110 is a white bakelite plate, so that the box body 110 can be used as a background plate of the color-changing silicone 101 while bearing the color-changing silicone 101, and after the color-changing silicone 101 is wet and changes color, the white background provided by the box body 110 can ensure that the color reading standards are consistent, so as to accurately judge the color of the color-changing silicone 101. It is understood that other materials may be used for the box 110, as long as the box 110 is white.
In one embodiment, the cover 120 is made of transparent organic glass, and the cover 120 is made of transparent organic glass, so that the whole cover 120 can be used as a visible part, and a transparent part is not required to be arranged on the cover 120 to observe the color of the allochroic silica gel 101.
In order to ensure the detection accuracy, the air entering the box body 110 from the power battery box should be as much as possible, so that a plurality of air holes 111 may be provided, as shown in fig. 3, and the plurality of air holes 111 are distributed at the bottom of the box body 110 in an array. The array of air holes shown in fig. 3 is 8 rows and 8 columns, which may be increased or decreased as desired in other embodiments.
In one embodiment, the particle size of the allochroic silicagel 101 is 6mm, and the diameter of the air hole 111 is 4mm, so that the size of the allochroic silicagel 101 particles can be ensured to be larger than that of the air hole 111, and the allochroic silicagel 101 particles are prevented from falling into the power battery box body. It is understood that the air holes 111 need not be circular, but may be rectangular or other shapes.
In one embodiment, the battery box humidity indicating device 100 is bolted into the power battery box, as shown in fig. 4, mounting holes are provided on both the box body 110 and the box cover 120, a first mounting hole 112 is provided on the box body 110, a second mounting hole 121 is provided on the box cover 120, a plurality of first mounting holes 112 and a plurality of second mounting holes 121 are provided, and the first mounting holes 112 correspond to the second mounting holes 121 one by one. After the bolts pass through the first mounting hole 112 and the second mounting hole 121, the battery box humidity indicating device 100 can be mounted in the power battery box by being locked and attached to the power battery box. During installation, firstly, the color-changing silica gel 101 is placed in the box body 110, the box cover 120 is bonded to the top of the box body 110 through glue, and finally, the whole battery box humidity indicating device 100 is locked in the power battery box through bolts. When the power battery box is installed, the box cover 120 is attached to the inner wall of the power battery box, and the bottom of the box body 110 needs to be exposed in the power battery box, so that air in the power battery box enters the box body 110 through the air holes 111 at the bottom of the box body 110.
The bolt can cooperate the sealed use that fills up, when playing the locking effect, can also promote the sealing performance of the assembly body.
Referring to fig. 4 and 5, a connecting platform 113 is disposed at an edge of the top of the box 110, and the first mounting hole 112 is disposed on the connecting platform 113. The provision of the attachment platform 113 facilitates the top of the housing 110 to form a horizontal platform for mounting the housing 110 to a power cell housing, the attachment platform 113 being similar to a mounting flange. The connecting platform 113 is also provided to facilitate the adhering and bonding of the cover 120 to the housing 110. The cover 120 is sized to conform to the peripheral dimensions of the attachment platform 113 such that the second mounting holes 121 in the cover 120 correspond to the first mounting holes 112 in the attachment platform 113.
As shown in fig. 1, a sealing groove 122 is formed in the top of the case cover 120, and a sealing rubber strip is disposed in the sealing groove 122 and between the case cover 120 and the power battery case to prevent air outside the power battery case from entering the power battery case. The sealing strip can be replaced by a sealant, that is, the sealant is directly applied to the sealing groove 122 to achieve sealing. The material of joint strip can adopt HT800 material, and the compressive capacity of joint strip is 50% after the installation to realize with the sealed of power battery case.
In one embodiment, as shown in fig. 1, the case body 110, the case cover 120, and the sealing groove 122 are all rectangular, and the rectangular sealing groove 122 is convenient for placing the sealant into the sealing groove 122, and the rectangular sealing groove 122 is convenient for processing the sealing groove 122. As shown in fig. 4, the first mounting holes 112 are provided at four corners of the top of the case body 110, the second mounting holes 121 are provided at four corners of the case cover 120, and the sealing grooves 122 are provided inside a rectangle formed by the four second mounting holes 121.
In a specific embodiment of the present invention:
the side wall thickness of the box body 110 is 10mm, the bottom wall thickness of the box body 110 is 6mm, and the wall thickness of the box body 110 needs to be set to provide enough support for the allochroic silica gel 101 under the vibration condition in the working process of the battery; the connecting platform 113 extending outwards from the top of the box body 110 extends outwards by 10mm, and the thickness of the connecting platform 113 is 10 mm; the diameter of the first mounting hole 112 is 6 mm;
the box cover 120mm long, 120mm wide and 10mm thick; the length of the whole rectangular shape of the sealing groove 122 is 104mm, the width of the whole rectangular shape is 104mm, and the depth of the sealing groove 122 is 2mm, and the width of the sealing groove is 2 mm; the total length of the sealing rubber strip in the sealing groove 122 is 412mm, and the section is 8mm2
The utility model also provides a power battery box, including the battery box, still include above-mentioned power battery box humidity indicating device 100, power battery box humidity indicating device 100 sets up in the inside of battery box, and power battery box humidity indicating device 100's case lid 120 and the inner wall laminating of battery box are provided with the window of looking of the colour that is used for observing allochroic silica gel 101 on the battery box, and the window of looking corresponds the setting with case lid 120 to observe allochroic silica gel 101 in the box 110 through window of looking and case lid 120. The utility model discloses a power battery box is owing to adopted above-mentioned power battery box humidity indicating device 100, so has the beneficial effect that above-mentioned power battery box humidity indicating device 100 had at least, and repeated description is not repeated here.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims (10)

1. A power battery box humidity indicating device, characterized by includes:
the device comprises a box body (110), wherein a containing cavity is arranged in the box body (110), an air hole (111) which is communicated with the outside of the box body (110) and the containing cavity is formed in the bottom or the side wall of the box body (110), and allochroic silica gel (101) is placed in the containing cavity;
case lid (120), lid are located the top of box (110), case lid (120) include visual portion to through visual portion observes the colour of allochroic silica gel (101).
2. The humidity indicator of power battery box according to claim 1, wherein a first mounting hole (112) is formed in the box body (110), a second mounting hole (121) is formed in the box cover (120), and the first mounting hole (112) and the second mounting hole (121) are correspondingly formed.
3. The humidity indicating device of the power battery box as claimed in claim 2, wherein a connecting platform (113) is disposed at an edge of the top of the box body (110), and the first mounting hole (112) is disposed on the connecting platform (113).
4. The humidity indicator of power battery box according to claim 1, characterized in that the top of the box cover (120) is provided with a sealing groove (122).
5. The humidity indicator of power battery box according to claim 4, wherein the box body (110), the box cover (120) and the sealing groove (122) are all rectangular.
6. The humidity indicator of power battery box according to claim 1, wherein the box body (110) is made of a white bakelite plate.
7. The power battery compartment humidity indicator of claim 1, wherein the compartment cover (120) is made of transparent plexiglass to form the visible portion.
8. The humidity indicator of power battery box according to claim 1, wherein the number of the air holes (111) is multiple, and the air holes (111) are distributed at the bottom of the box body (110) in an array manner.
9. A power battery box, comprising a battery box body, characterized by further comprising the humidity indicating device of any one of claims 1 to 8, wherein the humidity indicating device is arranged inside the battery box body.
10. The power battery box as claimed in claim 9, wherein a viewing window for observing the color of the allochroic silica gel (101) is arranged on the battery box body.
CN202022758264.7U 2020-11-25 2020-11-25 Power battery box humidity indicating device and power battery box Active CN213583926U (en)

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CN202022758264.7U CN213583926U (en) 2020-11-25 2020-11-25 Power battery box humidity indicating device and power battery box

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114018917A (en) * 2021-10-29 2022-02-08 东风商用车有限公司 Humidity detection device, battery pack and detection method

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114018917A (en) * 2021-10-29 2022-02-08 东风商用车有限公司 Humidity detection device, battery pack and detection method

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