CN219498009U - Battery tray for battery pack and battery pack with battery tray - Google Patents

Abstract

The utility model discloses a battery tray for a battery pack and the battery pack with the same, wherein the battery tray comprises: a first housing formed with a first cavity adapted to accommodate a battery and a first channel communicating with the first cavity; a second housing connected to the first housing and formed with a second cavity, the first channel communicating with the second cavity to guide a medium in the first cavity to the second cavity; the medium detector is arranged in the second cavity and is suitable for detecting the medium in the second cavity. According to the battery tray designed according to the utility model, the medium in the first cavity is guided to the second cavity by arranging the first channel, so that the leakage condition of the whole battery pack is detected by using a small amount of medium detectors.

Description

Battery tray for battery pack and battery pack with battery tray

Technical Field

The utility model relates to the field of battery packs, in particular to a battery tray for a battery pack and the battery pack with the battery tray.

Background

In the related art, the battery pack has the potential leakage hazard, and the battery pack leakage can be detected by arranging the leakage sensor in the battery pack, and in the prior art, the battery pack is provided with a plurality of cavities, so that the leakage condition of the battery pack is detected in time, the leakage sensor is constructed into a plurality of cavities and is respectively arranged in different cavities, however, in the schemes, the plurality of leakage sensors increase the overall cost of the battery pack, and meanwhile, the battery pack structure and the wiring are relatively complex, and the occupation of the internal space of the battery pack is larger.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. To this end, an object of the present utility model is to propose a battery tray for a battery pack. According to the battery tray designed according to the utility model, the medium in the first cavity is guided to the second cavity by arranging the first channel, so that the leakage condition of the whole battery pack is detected by using a small amount of medium detectors.

The utility model further provides a battery pack with the battery tray.

The battery tray according to the present utility model includes: a first housing formed with a first cavity adapted to accommodate a battery and a first channel communicating with the first cavity; a second housing connected to the first housing and formed with a second cavity, the first channel communicating with the second cavity to guide a medium in the first cavity to the second cavity; the medium detector is arranged in the second cavity and is suitable for detecting the medium in the second cavity.

According to the battery tray, the medium detector is arranged in the second cavity, the first channel is arranged to guide the leakage medium in the first cavity to the second cavity, when the battery in the first cavity leaks electrolyte or the cold plate leaks cooling liquid, the leakage medium flows from the first cavity to the second cavity under the guide of the first channel and is detected by the medium detector, the medium detector sends out a signal alarm to prompt the battery pack to leak, and the leakage medium in the battery pack is collected at the medium detector to realize the detection of the leakage medium, so that the number of the medium detectors can be reduced, and the space occupation of the medium detector on the battery tray can be reduced.

According to some embodiments of the utility model, the lowest point of the first channel is higher than or flush with the highest point of the second cavity.

According to some embodiments of the utility model, the first housing comprises: a base plate having a mounting surface facing the battery; and the side beam is arranged on at least part of the periphery of the bottom plate and is used for limiting the first cavity together with the bottom plate, and the side beam and/or the bottom plate are/is formed with the first channel.

According to some embodiments of the utility model, the side rail has the first channel formed thereon, the side rail includes a side rail body connected to the bottom plate, the side rail body has a first surface formed thereon parallel to the mounting surface, and the first surface has a side rail groove formed thereon, the side rail groove defining the first channel therein.

According to some embodiments of the utility model, the second housing is formed with a second channel in communication with the first channel, the second channel extending to and in communication with the second cavity, the media detector being adapted to detect media within the second channel.

According to some embodiments of the utility model, the media detector comprises: the medium detector comprises a first sensing support leg and a second sensing support leg, wherein the first sensing support leg and the second sensing support leg are both accommodated in the second channel, and the medium detector is suitable for judging that a medium exists in the second channel when the electric potentials of the first sensing support leg and the second sensing support leg are the same.

According to some embodiments of the utility model, the media detector further comprises: the internal resistance is connected between the first sensing support leg and the second sensing support leg.

According to some embodiments of the utility model, the media detector further comprises: a third housing having a third receiving cavity formed therein adapted to receive the first and second sensing legs; and a fixing portion connected with the third housing and adapted to be fixed with the second housing.

According to some embodiments of the utility model, the first housing is formed with a partition rib that partitions the first cavity into a plurality of battery accommodation cavities, and the first passage communicates with the plurality of battery accommodation cavities, respectively.

According to some embodiments of the utility model, the second housing is formed with a discharge channel, at least part of the first channel extending to the discharge channel.

According to some embodiments of the utility model, the battery tray further comprises: and the discharging device is at least partially arranged in the discharge channel and detachably connected with the battery tray so as to enable the battery tray to be closed or communicated with the outside.

According to some embodiments of the utility model, the vent apparatus comprises: the sealing device comprises a locking piece and a sealing piece, wherein at least part of the periphery of the locking piece is provided with a first thread, the inner wall of a discharge channel is provided with a second thread, the first thread is in threaded fit with the second thread, the surface of the locking piece, which faces to the second shell, is also provided with a mounting groove, and the sealing piece is arranged in the mounting groove, and at least part of the sealing piece is arranged between the second shell and the locking piece.

A battery pack according to another embodiment of the present utility model is briefly described as follows.

The battery pack according to the utility model comprises the battery tray according to any one of the embodiments, and the battery pack according to the utility model is provided with the battery tray according to the embodiment, so that the battery pack can realize the leakage detection of a plurality of battery accommodating cavities of the whole battery pack through only one medium detector, and has a simple structure and lower cost.

In summary, according to the battery tray provided by the utility model, the first channel is arranged to guide the medium in the first cavity to the second cavity, so that the leakage condition of the whole battery pack is detected by using a small amount of medium detectors, the number of the medium detectors can be reduced, the space occupation of the medium detectors on the battery tray is reduced, the cost of the battery pack is reduced, and the structure of the battery pack is simplified.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a top view of a battery tray according to an embodiment of the present utility model;

FIG. 2 is a schematic diagram of the installation of a media detector according to an embodiment of the utility model;

FIG. 3 is a cross-sectional view of a first side rail according to an embodiment of the present utility model;

FIG. 4 is a schematic diagram of the structure of a media detector according to an embodiment of the utility model;

fig. 5 is a schematic structural view of a battery pack according to an embodiment of the present utility model;

fig. 6 is a schematic view of a battery pack according to other embodiments of the present utility model;

fig. 7 is a schematic view of a television tray according to further embodiments of the utility model;

FIG. 8 is a schematic diagram of the installation of a media detector according to further embodiments of the utility model;

FIG. 9 is an exploded view of a vent apparatus according to further embodiments of the utility model mounted with a second housing;

fig. 10 is a cross-sectional view of a vent apparatus according to other embodiments of the utility model mated with a vent passage.

Reference numerals:

1. a first housing; 11. a first cavity; 12. a first channel; 13. a bottom plate; 14. edge beams; 15. a first surface; 16. a separation rib; 17. a battery accommodating chamber;

2. a second housing; 21. a second cavity; 22. a second channel; 23. a discharge passage;

3. a media detector; 31. a first sensing leg; 32. a second sensing leg; 34. a third housing; 35. a fixing part; 36. sampling a wire harness;

4. a bleeder device; 41. a locking member; 411. a sealing plate; 412. a cylindrical boss; 413. a circular ring seal ring; 42. and a seal.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

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; may be mechanically connected, may be electrically connected or may communicate with each other; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. 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.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the related art, the battery pack has the potential leakage hazard, and the battery pack leakage can be detected by arranging the leakage sensor in the battery pack, and in the prior art, the battery pack is provided with a plurality of cavities, so that the leakage condition of the battery pack is detected in time, the leakage sensor is constructed into a plurality of cavities and is respectively arranged in different cavities, however, in the schemes, the plurality of leakage sensors increase the overall cost of the battery pack, and meanwhile, the battery pack structure and the wiring are relatively complex, and the occupation of the internal space of the battery pack is larger.

A battery tray for a battery pack according to an embodiment of the present utility model is described below with reference to fig. 1 to 10.

As shown in fig. 1, the battery tray according to the present utility model includes: a first housing 1, a second housing 2 and a medium detector 3. The first housing 1 is formed with a first cavity 11 adapted to accommodate a battery and a first passage 12 communicating with the first cavity 11; the second housing 2 is connected to the first housing 1 and formed with a second cavity 21, and the first passage 12 communicates with the second cavity 21 to guide the medium in the first cavity 11 to the second cavity 21; the medium detector 3 is arranged in the second cavity 21 and is adapted to detect a medium in the second cavity 21. Specifically, the first casing 1 is connected with the second casing 2 to form a battery tray, the first casing 1 and the second casing 2 are respectively provided with a first cavity 11 and a second cavity 21, the first casing 1 is also provided with a first channel 12 communicated with the first cavity 11, and the first channel 12 can be communicated with the first cavity 11 and the second cavity 21 after the first casing 1 is connected with the second casing 2. The battery and the cold plate are installed in the first cavity 11, the battery pack is corroded and harmful to people due to the risk of electrolyte leakage in the battery core and the risk of coolant leakage in the cold plate, so that the medium detector 3 suitable for detecting the medium leakage and feeding back the medium leakage to the whole vehicle is arranged in the second cavity 21, and the medium detector 3 can detect the electrolyte or the coolant when the medium leakage occurs in the battery core or the cold plate of the battery in the first cavity 11. In the running process of the automobile, the leaked liquid in the first cavity 11 starts to move under the action of inertia and flows into the first channel 12, the first channel 12 collects the leaked liquid medium into the second cavity 21, the leaked liquid medium continuously flows in the second cavity 21, and when the leaked liquid passes through the medium detector 3, the medium detector 3 sends out a signal and gives an alarm to prompt the battery core or the cold plate of the battery to leak liquid.

According to the battery tray, the medium detector 3 is arranged in the second cavity 21, the first channel 12 is arranged to guide the liquid leakage medium in the first cavity 11 to the second cavity 21, when the battery in the first cavity 11 leaks electrolyte or the cold plate leaks cooling liquid, the liquid leakage medium flows from the first cavity 11 to the second cavity 21 under the guide of the first channel 12 and is detected by the medium detector 3, the medium detector 3 sends a signal alarm to prompt the battery pack to leak, and the liquid leakage medium in the battery pack is collected at the medium detector 3 to realize the detection of the liquid leakage medium, so that the number of the medium detector 3 can be reduced, and the space occupation of the medium detector 3 on the battery tray can be reduced.

In some embodiments, the media detector 3 is configured as a drain sensor to detect a drain media within the battery tray.

According to some embodiments of the present utility model, as shown in fig. 2, the lowest point of the first channel 12 is higher than the highest point of the second cavity 21 or is flush with the highest point of the second cavity 21, so that the liquid leakage medium flowing in the first channel 12 can smoothly enter the second cavity 21 under the action of gravity, and then the medium detector 3 located in the second cavity 21 detects the liquid leakage medium, so as to feed back to the liquid leakage condition of the whole vehicle battery pack. In some embodiments, the lowest point of the first channel 12 is higher than the highest point of the second cavity 21, a height difference is formed between the first channel 12 and the second cavity 21, so as to promote the flow of the liquid leakage medium, and the liquid leakage medium can flow from the first channel 12 to the second cavity 21 under the action of gravity; in other embodiments, the lowest point of the first channel 12 is flush with the highest point of the second cavity 21, so that the first channel 12 may be arranged in engagement with the second cavity 21, and the leakage medium may flow towards the second cavity 21.

In some embodiments, the first channel 12 is disposed on the first housing 1, and the bottom surface of the first channel 12 and the bottom surface of the first cavity 11 may also have a height difference, when the liquid leakage medium exists in the first cavity 11, the liquid leakage medium in the first cavity 11 may flow into the first channel 12 more quickly under the action of gravity, and the first channel 12 guides the liquid leakage medium to the second cavity 21 to detect the liquid leakage quickly, so that when the battery core or the cold plate leaks, the medium detector 3 sends a signal and alarms in time to prompt the battery core or the cold plate to leak.

In some embodiments, at least a portion of the first channel 12 is inclined towards the second cavity 21, so as to accelerate the flow speed of the liquid leakage medium located in the first channel 12 towards the second cavity 21, so that the medium detector 3 can detect the liquid leakage medium more rapidly and feed back to the whole vehicle, the liquid leakage detection is more timely, and the use safety of the battery pack is ensured.

According to some embodiments of the present utility model, as shown in fig. 1, the first housing 1 includes a bottom plate 13 and a side rail 14. The base plate 13 has a mounting surface facing the battery, on which the battery is mounted; the side beam 14 is disposed on at least a portion of the periphery of the bottom plate 13 and defines the first cavity 11 together with the bottom plate 13, and the side beam 14 and/or the bottom plate 13 have the first channel 12 formed thereon. In particular, the bottom plate 13 and the side rail 14 may together define a first cavity 11 adapted to receive a battery, wherein the battery is placed on the bottom plate 13 and in contact with a mounting surface of the bottom plate 13. More specifically, in some embodiments, the first channel 12 may be configured as a strip and open to the side beam 14, so that the leakage medium in the first cavity 11 may flow to the first channel 12 at the side beam 14 and continue to flow toward the second cavity 21, and the leakage medium is led out to the side beam 14, so as to avoid corrosion caused by the leakage to other structures in the first cavity 11; in other embodiments, the first channel 12 may be configured as a strip and open at the bottom plate 13 near the side beam 14, so that the leakage medium may enter the first channel 12 far from other structures in the first cavity 11 and flow to the second cavity 21; in other embodiments, the first channel 12 may be configured as a plurality of communicating channels and open to the edge beam 14 and the bottom plate 13 respectively, so that the first channel 12 may guide the leakage medium at different positions in the first cavity 11 to the second cavity 21, so that the battery pack may guide the leakage medium out of the first cavity 11 while detecting the leakage medium, and prevent the leakage medium from being retained in the first cavity 11.

In some embodiments, the side beams 14 may include a first side beam and a second side beam, where the first side beam may be disposed on two sides of the bottom plate 13 in the length direction, the second side beam may be disposed on two sides of the bottom plate 13 in the width direction, and the adjacent first side beam and the side wall of the second side beam are fixedly connected together.

According to some embodiments of the present utility model, as shown in fig. 1, 2 and 3, a first channel 12 is formed on a side rail 14, the side rail 14 includes a side rail body connected to a bottom plate 13, the side rail body is formed with a first surface 15 parallel to a mounting surface, a side rail groove is formed on the first surface 15, and the first channel 12 is defined inside the side rail groove. Specifically, the first surface 15 of the boundary beam body is flush with the mounting surface of the bottom plate 13, so that the leakage medium flowing on the bottom plate 13 can flow to the first surface 15 of the boundary beam body, at least part of the first surface 15 of the boundary beam body is concave and forms boundary beam grooves, and the boundary beam grooves of different boundary beam bodies are mutually communicated to form the first channel 12 in the first housing 1.

According to some embodiments of the present utility model, as shown in fig. 1 and 2, the second housing 2 is formed with a second channel 22 communicating with the first channel 12, the second channel 22 extending to the second cavity 21 and communicating with the second cavity 21, and the medium detector 3 is adapted to detect a medium in the second channel 22. Specifically, the second housing 2 may be provided with a second channel 22 communicating with the first channel 12, so as to limit the flow range of the medium flowing to the second housing 2 to the second channel 22, avoid random flow of the leaked medium, and communicate the second channel 22 with the second cavity 21 to guide the medium to the second cavity 21 and be detected by the medium detector 3 located in the second cavity 21.

In some embodiments, the bottom surface of the second channel 22 is lower than the bottom surface of the second cavity 21, and the bottom surface of the second channel 22 is lower than the bottom surface of the first channel 12, so that there is a height difference between the second channel 22 and both the first channel 12 and the second cavity 21, and the leakage liquid enters the second channel 22 quickly after entering the second cavity 21 along the first channel 12, so that the medium detector 3 can detect the leakage liquid more quickly.

According to some embodiments of the present utility model, as shown in fig. 4 and 5, the medium detector 3 includes a first sensing leg 31 and a second sensing leg 32, both the first sensing leg 31 and the second sensing leg 32 are accommodated in the second channel 22, and the medium detector 3 is adapted to determine that the medium exists in the second channel 22 when the first sensing leg 31 and the second sensing leg 32 have the same potential. Specifically, in some embodiments, the media detector 3 includes a leakage controller, a first sensing leg 31, and a second sensing leg 32, the first sensing leg 31 and the second sensing leg 32 each disposed on a bottom surface of the second channel 22, the first sensing leg 31 and the second sensing leg 32 each electrically connected to the leakage controller through a sampling harness 36. In some embodiments, at least a portion of the edge beam 14 is configured as an insulator and the first and second sensor feet 31, 32 are disposed in insulation between the contact points with the second channel 22 to avoid the media detector 3 from affecting media detection accuracy by factors of the battery tray. Under the condition that no medium exists between the first sensing support leg 31 and the second sensing support leg 32, the electric potentials of the first sensing support leg 31 and the second sensing support leg 32 are different, when a liquid leakage medium passes through the first sensing support leg 31 and the second sensing support leg 32 of the medium detector 3, the first sensing support leg 31 is electrically connected with the second sensing support leg 32 due to the conduction of the liquid leakage medium, at the moment, the electric potentials of the first sensing support leg 31 and the second sensing support leg 32 are the same, the sampling wire harness 36 transmits signals to a leakage controller, and the leakage controller feeds back the liquid leakage information of the battery package to the whole vehicle.

According to some embodiments of the utility model, as shown in fig. 5, the media detector 3 further comprises an internal resistance. The internal resistance is connected between the first sensing leg 31 and the second sensing leg 32. Specifically, under the condition that no medium exists between the first sensing support leg 31 and the second sensing support leg 32, the first sensing support leg 31 and the second sensing support leg 32 are connected together through internal resistance, at the moment, potential difference exists between the first sensing support leg 31 and the second sensing support leg 32, when liquid leakage occurs, the first sensing support leg 31 and the second sensing support leg 32 are in short circuit through liquid leakage, at the moment, the potential of the first sensing support leg 31 is the same as that of the second sensing support leg 32, the sampling wire harness 36 immediately transmits signals to a leakage controller, and the leakage controller feeds back battery package liquid leakage information to the whole vehicle.

In some embodiments, in order to improve the service life of the medium detector 3, an external resistor is designed to be connected in series with the first sensing support leg 31 or the second sensing support leg 32, when a leakage occurs, the current starts from the positive electrode, passes through the external resistor, sequentially passes through the first sensing support leg 31 and the second sensing support leg 32, and finally returns to the negative electrode, so that the short circuit phenomenon is prevented, and the service life of the medium detector 3 is improved; it is of course also possible that the current starts from the positive electrode, passes through the first sensor leg 31 and the second sensor leg 32 in sequence, then passes through the external resistor, and finally returns to the negative electrode.

According to some embodiments of the present utility model, as shown in fig. 4 and 5, the media detector 3 further includes a third housing 34 and a fixing portion 35, wherein a third accommodating cavity adapted to accommodate the first sensing leg 31 and the second sensing leg 32 is formed in the third housing 34, and the fixing portion 35 is connected to the third housing 34 and adapted to be fixed with the second housing 2. Specifically, the first sensing leg 31 and the second sensing leg 32 are both accommodated in the third housing 34, and one ends of the first sensing leg 31 and the second sensing leg 32 extend out of the third housing 34 and abut against the bottom of the second channel 22, and in some embodiments, the second housing 2 is further provided with a fixing bracket, the third housing 34 is connected with the fixing bracket through the fixing portion 35, preferably the fixing bracket is provided with a threaded hole, the fixing portion 35 is provided with a through hole corresponding to the threaded hole of the fixing bracket, and the threaded rod is screwed with the threaded hole after passing through the through hole so as to fix the media detector 3 on the second housing 2, so as to facilitate installation and replacement of the media detector 3.

According to some embodiments of the present utility model, as shown in fig. 1, the first housing 1 is formed with a partition rib 16, the partition rib 16 dividing the first chamber 11 into a plurality of battery receiving chambers 17, and the first passages 12 are respectively communicated with the plurality of battery receiving chambers 17. Specifically, be provided with one or more separation muscle 16 in the first casing 1, separation muscle 16 is connected with the mounting surface of bottom plate 13 and the lateral wall of first casing 1 in order to separate first cavity 11 into a plurality of battery and hold chamber 17, all install the group battery in a plurality of battery hold chamber 17, a plurality of group battery all are connected with the cold plate, first passageway 12 sets up in first casing 1 and holds chamber 17 intercommunication with a plurality of battery, when the weeping takes place for arbitrary battery holds chamber 17, first passageway 12 can lead the weeping medium to second cavity 21, set up the first passageway 12 that holds chamber 17 intercommunication with a plurality of battery can make the battery package only through a medium detector 3 can realize the weeping detection to a plurality of battery hold chamber 17 of whole battery package, battery package cost is reduced, and battery package structure has been simplified.

According to some embodiments of the present utility model, as shown in fig. 6 to 10, the second housing 2 is formed with a discharge passage 23, and at least part of the first passage 12 extends to the discharge passage 23. Specifically, the second housing 2 is provided with a discharge passage 23, and the first passage 12 extends to the second housing 2 and communicates with the discharge passage 23. More specifically, the leakage medium flows along the first channel 12, and the medium detector 3 may detect the leakage medium flowing to the second cavity 21, at this time, the leakage medium continues to flow along the first channel 12 to the discharge channel 23 and flows out of the battery tray through the discharge channel 23, so as to avoid that the leakage medium accumulated in the battery tray soaks the battery and corrodes other structures.

According to some embodiments of the utility model, as shown in fig. 9 and 10, the battery tray further includes: and a drain device 4, at least part of the drain device 4 is arranged in the drain channel 23, and the drain device 4 is detachably connected with the battery tray so as to enable the battery tray to be closed or communicated with the outside. Specifically, the battery tray further includes a drain 4, the drain 4 being detachably connected to the second housing 2, and at least a portion of the drain 4 being disposed within the drain channel 23 to selectively communicate or block the second cavity 21 from the exterior of the battery pack. More specifically, when the battery pack normally operates, the discharging device 4 is mounted on the second housing 2, so that the discharging device 4 blocks the second cavity 21 from the outside of the battery pack, when the battery pack leaks, the leakage medium flows to the second cavity 21 through the first channel 12, the medium detector 3 detects the leakage medium and sends out a signal alarm to prompt the battery core or the cold plate of the battery to leak, at the moment, an operator can detach the discharging device 4, the second cavity 21 is communicated with the outside of the battery pack through the discharging channel 23, so that the leakage medium is discharged out of the battery tray through the discharging channel 23, excessive accumulation of the leakage medium is avoided, and the battery is soaked and corroded to other structures.

At least part of the discharging device 4 is arranged in the discharging channel 23 to selectively communicate or block the second cavity 21 and the outside of the battery pack, so that the medium detector 3 can timely detect the liquid leakage medium, and the liquid leakage medium is prevented from being directly discharged out of the battery tray through the discharging channel 23 without being detected by the medium detector 3.

According to some embodiments of the utility model, as shown in fig. 9 and 10, the bleeder 4 comprises: the locking member 41 and the sealing member 42, wherein a first thread is formed on at least part of the periphery of the locking member 41, a second thread is formed on the inner wall of the discharge channel 23 formed on the second shell 2, the first thread is in threaded fit with the second thread, a mounting groove is further formed on the surface of the locking member 41 facing the second shell 2, the sealing member 42 is arranged in the mounting groove, and at least part of the sealing member 42 is arranged between the second shell 2 and the locking member 41. Specifically, in some embodiments, the relief device 4 is composed of a locking member 41 and a sealing member 42, the locking member 41 may be configured as a sealing plate 411, a cylindrical boss 412 is disposed at the top of the sealing plate 411, a first thread is disposed on an outer wall of the cylindrical boss 412, a second thread is disposed on an inner wall of the discharge channel 23, the first thread and the second thread cooperate to seal the discharge channel 23, a circular ring sealing ring 413 is formed on at least part of the outer circumference of the sealing plate 411 in a direction extending toward the cylindrical boss 412, the circular ring sealing ring 413 cooperates with an outer wall of the discharge channel 23 to further enhance a sealing effect on the discharge channel 23, a mounting groove is disposed between the cylindrical boss 412 and the circular ring sealing ring 413, the sealing plate 411 is disposed in the mounting groove, the sealing member 42 has elasticity, after the sealing member 42 is disposed in the mounting groove, a top surface of the sealing plate 42 protrudes from the top surface of the sealing plate 411, after the first thread of the circular ring boss 412 cooperates with the second thread of the discharge channel 23, the circular ring boss 412 is pressed against the through hole to press the sealing member 42, the sealing member 42 is pressed against the inner wall of the circular ring boss 412, and the sealing plate is pressed against the outer wall of the discharge channel 23 to seal the top surface of the discharge channel 23, thereby further enhancing the sealing effect on the discharge channel 23.

The first screw thread cooperates with the second screw thread to open or close the through hole 23 for the dismouting of bleed device 4 is more convenient, can seal discharge channel 23 simultaneously, and sealing member 42 installs behind the mounting groove, and sealing member 42's at least part sets up between second casing 2 and retaining member 41, under the pressure effect, and sealing member 42 produces the elasticity that acts on discharge channel 23 terminal surface to improve the sealed effect to discharge channel 23, and ring sealing washer 413 cooperates with discharge channel 23's outer wall in order to further improve the sealed effect to discharge channel 23.

In some embodiments of the present utility model, the battery tray of the battery pack includes a first housing 1 and a second housing 2 connected to the first housing 1, the first housing 1 is formed by a bottom plate 13 and a side beam 14 disposed at least partially on the periphery of the bottom plate 13, a first cavity 11 is formed by surrounding the bottom plate 13 and the side beam 14 on the periphery of the bottom plate 13, at least one separation rib 16 is disposed on the bottom plate 13, two ends of the separation rib 16 are respectively connected to the side beam 14 to separate the first cavity 11 into a plurality of battery accommodating cavities 17 suitable for accommodating battery packs, the second housing 2 is provided with a second cavity 21 and a medium detector 3 is disposed in the second cavity 21, the side beam 14 is provided with a first surface 15 coplanar with the bottom surface of the first housing 1, side beam grooves are formed on the first surface 15, the side beam grooves of different side beams 14 are mutually communicated, the first channels 12 are defined inside the side beam grooves, the first channels 12 communicate the plurality of battery accommodating cavities 17 with the second cavity 21, the second housing 2 is further provided with a second channel 22 in the second cavity 21, the second housing 2 is disposed in the second cavity 22 and is flush with the second channel 21 or the second channel 2, and the second channel is flush with the bottom surface of the second channel 2, and the medium detector 3 is disposed in the second channel 2.

All install the battery in a plurality of batteries hold chamber 17, the battery is connected with the cold plate, and the battery core of battery exists the risk that electrolyte leaked, and the cold plate exists the risk that coolant liquid leaked, and the weeping medium can lead to battery package corruption and be harmful to the people. When any one or more battery cells or cold plates of the batteries in the battery accommodating cavities 17 leak, in the running process of the automobile, the leakage media in the battery accommodating cavities 17 start to move under the action of inertia and flow into the first channel 12, the first channel 12 collects the leakage media to the second cavity 21, the leakage media finally collect in the second channel 22, when the leakage media flow through the first sensing support leg 31 and the second sensing support leg 32 of the media detector 3, the potentials of the first sensing support leg 31 and the second sensing support leg 32 are the same, at the moment, the sampling wire harness 36 of the media detector 3 transmits signals to the leakage controller, and the leakage controller feeds back leakage information of the battery pack to the whole automobile through a communication protocol.

Electrolyte leaked from the battery core of the battery and cooling liquid leaked from the cooling plate are corrosive, so that the battery in the battery accommodating cavity 17 is corroded, and the first channel 12 timely guides out liquid leakage media in the plurality of battery accommodating cavities 17 to the second cavity 21, so that the liquid leakage media are effectively prevented from being detained in the battery accommodating cavities 17; meanwhile, the leakage medium guided into the second cavity 21 is converged in the second channel 22 and then detected by the medium sensor 3, so that the leakage condition of all the battery accommodating cavities 17 in the whole battery pack is detected by one medium detector 3; and with the reduction of the number of the medium detectors 3, the space occupation of the medium detectors 3 to the battery tray is reduced, the battery pack cost is reduced, and the battery pack structure is simplified.

The battery pack according to the present utility model is briefly described as follows.

The battery pack according to the present utility model is provided with the battery tray of the above-described embodiment, and as shown in fig. 6, since the battery pack according to the present utility model is provided with the battery tray of any one of the above-described embodiments, the battery pack can realize the leakage detection of the plurality of battery accommodating chambers 17 of the entire battery pack by only one medium detector 3, and is simple in structure and low in cost.

In summary, according to the battery tray of the present utility model, the first channel 12 is provided to guide the medium in the first cavity 11 to the second cavity 21, so that the leakage condition of the whole battery pack is detected by using a small amount of medium detectors 3, the number of the medium detectors 3 can be reduced, the space occupation of the medium detectors 3 on the battery tray can be reduced, the cost of the battery pack can be reduced, and the structure of the battery pack can be simplified.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present utility model. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Further, one skilled in the art can engage and combine the different embodiments or examples described in this specification.

Although embodiments of the present utility model have been shown and described above, variations, modifications, substitutions and alterations are possible to the above embodiments.

Claims (13)

1. A battery tray for a battery pack, comprising:

a first housing (1), the first housing (1) being formed with a first cavity (11) adapted to accommodate a battery and a first channel (12) communicating with the first cavity (11);

-a second housing (2), the second housing (2) being connected to the first housing (1) and forming a second cavity (21), the first channel (12) being in communication with the second cavity (21) for guiding the medium in the first cavity (11) to the second cavity (21);

a media detector (3), the media detector (3) being arranged in the second cavity (21) and being adapted to detect media in the second cavity (21).

2. Battery tray for a battery pack according to claim 1, characterized in that the lowest point of the first channel (12) is higher than the highest point of the second cavity (21) or flush with the highest point of the second cavity (21).

3. Battery tray for a battery pack according to claim 2, characterized in that the first housing (1) comprises:

-a base plate (13), the base plate (13) having a mounting surface facing the battery;

the boundary beam (14), boundary beam (14) set up in at least part periphery of bottom plate (13) and with bottom plate (13) jointly define first cavity (11), boundary beam (14) and/or be formed with on bottom plate (13) first passageway (12).

4. A battery tray for a battery pack according to claim 3, wherein the side rail (14) has the first passage (12) formed thereon, the side rail (14) comprising:

the side beam body is connected with the bottom plate (13), the side beam body is formed with a first surface (15) parallel to the installation surface, a side beam groove is formed in the first surface (15), and the first channel (12) is defined in the side beam groove.

5. The battery tray for a battery pack according to claim 1, wherein the second housing (2) is formed with a second channel (22) communicating with the first channel (12), the second channel (22) extending to the second cavity (21) and communicating with the second cavity (21), the medium detector (3) being adapted to detect a medium within the second channel (22).

6. The battery tray for a battery pack according to claim 5, wherein the medium detector (3) comprises:

the medium detector comprises a first sensing support leg (31) and a second sensing support leg (32), wherein the first sensing support leg (31) and the second sensing support leg (32) are both accommodated in the second channel (22), and the medium detector (3) is suitable for judging that a medium exists in the second channel (22) when the first sensing support leg (31) and the second sensing support leg (32) have the same potential.

7. The battery tray for a battery pack according to claim 6, wherein the medium detector (3) further comprises: an internal resistance connected between the first sensor leg (31) and the second sensor leg (32).

8. The battery tray for a battery pack according to claim 6, wherein the medium detector (3) further comprises:

a third housing (34), wherein a third accommodating cavity suitable for accommodating the first sensing leg (31) and the second sensing leg (32) is formed in the third housing (34);

-a fixing portion (35), said fixing portion (35) being connected to said third housing (34) and being adapted to be fixed to said second housing (2).

9. The battery tray for a battery pack according to any one of claims 1 to 8, wherein the first housing (1) is formed with a partition rib (16), the partition rib (16) dividing the first cavity (11) into a plurality of battery accommodation cavities (17), the first passages (12) communicating with the plurality of battery accommodation cavities (17), respectively.

10. The battery tray for a battery pack according to claim 1, wherein the second housing (2) is formed with a discharge channel (23), at least part of the first channel (12) extending to the discharge channel (23).

11. The battery tray for a battery pack according to claim 10, further comprising: and the discharging device (4) is at least partially arranged in the discharging channel (23), and the discharging device (4) is detachably connected with the battery tray so as to enable the battery tray to be closed or communicated with the outside.

12. Battery tray for battery packs according to claim 11, characterized in that the bleed device (4) comprises:

a locking member (41), wherein a first thread is formed on at least part of the periphery of the locking member (41), a second thread is formed on the inner wall of the discharge channel (23), the first thread is in threaded fit with the second thread, and a mounting groove is formed on the surface of the locking member (41) facing the second shell (2);

and a seal member (42), wherein the seal member (42) is arranged in the mounting groove, and at least part of the seal member (42) is arranged between the second shell (2) and the locking member (41).

13. A battery pack, comprising: a battery tray configured as the battery tray of any one of claims 1-12.