CN220796844U - Battery pack and vehicle - Google Patents

Abstract

The utility model discloses a battery pack and a vehicle. The battery pack comprises a shell, a closing member and a temperature and humidity sensor; the housing has a vent; a closure member movably connected to the housing between a closed position closing the vent and an open position opening the vent, the closure member being operable for electrical connection with the controller; the temperature and humidity sensor is arranged inside and outside the shell, is used for collecting temperature and humidity information and can be electrically connected with the controller. Therefore, when the battery pack is connected to the controller and the driving member, the action of the driving member can be controlled according to the current temperature and humidity information, and then the driving member is controlled to move to the opening position when needed, so that ventilation is realized through the ventilation holes, the possibility of condensation in the shell to generate condensed water is reduced, and the battery of the battery pack is prevented from being damaged.

Description

Battery pack and vehicle

Technical Field

The utility model relates to the field of vehicles, in particular to a battery pack and a vehicle.

Background

The battery pack includes a housing. When the battery pack works, the pressure inside and outside the shell is inconsistent. If the enclosure is completely sealed, it may rupture due to excessive pressure inside the enclosure.

The outer case of the existing battery pack is provided with a waterproof ventilation valve for balancing the inner and outer pressures of the outer case. However, the existing waterproof and breathable valve can only prevent liquid water from entering the battery pack, and cannot isolate water vapor mixed in air. Thus, after a period of time, liquid water formed by condensation will appear inside the housing. Liquid water may damage the cells of the battery pack.

To this end, the present utility model provides a battery pack and a vehicle to solve the above-mentioned problems at least in part.

Disclosure of Invention

In the summary, a series of concepts in simplified form are introduced, which will be further described in detail in the detailed description. The summary of the utility model is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.

To at least partially solve the above technical problems, the present utility model provides a battery pack, including:

a housing having a vent;

a closing member movably connected to the housing between a closed position closing the vent and an open position opening the vent, the closing member being operable for electrical connection with the controller;

the temperature and humidity sensor is arranged inside and outside the shell, is used for collecting temperature and humidity information and can be electrically connected with the controller.

According to the battery pack disclosed by the utility model, the controller can be electrically connected to the driving member for driving the closing member to move between the opening position and the closing position so as to control the operation of the driving member, the controller can be connected to the external temperature and humidity sensor and the internal temperature and humidity sensor so as to acquire the external temperature and humidity information and the internal temperature and humidity information, and the controller can control the operation of the driving member according to the external temperature and humidity information and the internal temperature and humidity information, so that when the battery pack is connected to the controller and the driving member, the action of the driving member can be controlled according to the current internal temperature and humidity information and the external temperature and humidity information, and then the driving member is controlled to move to the opening position when the battery pack is required to be ventilated through the ventilation holes, the possibility of condensation in the shell to generate condensed water is reduced, and the battery of the battery pack is prevented from being damaged.

Optionally, the vent is located in a side wall of the housing, and/or

The vent is located in the top wall of the housing.

Optionally, the opposite end surfaces of the housing are respectively provided with ventilation holes.

Optionally, the battery pack further includes a filter member connected to the housing, the filter member covering the vent.

Optionally, the shell is further provided with an air hole, the air hole is positioned on the top wall of the shell, and the battery pack further comprises an air ventilation valve which is arranged on the air hole and used for ventilation.

Optionally, in the first direction, the vent is located between two ends of the housing.

Optionally, the battery pack further comprises a controller and a driving member, wherein the driving member is connected to the closing member and used for driving the closing member to move between a closing position and an opening position, the controller is electrically connected to the driving member and the temperature and humidity sensor, and the controller controls the action of the driving member according to the temperature and humidity information.

Optionally, the temperature and humidity information includes the inside temperature and humidity information that is located the inside temperature and humidity sensor of inside in the shell and the outside temperature and humidity information that is located the outside temperature and humidity sensor of outside of shell gathered, and the controller is according to inside temperature and humidity information determination inside the number of water molecules in the unit volume, and the number of water molecules in the unit volume is in the outside according to outside temperature and humidity information determination outside, and when the number of water molecules in the unit volume > outside unit volume inside the controller, the control drive component drive closure member removes to the open position.

Optionally, the controller controls the driving member to drive the closing member to move to the open position when the battery pack is in operation.

The utility model also provides a vehicle, which comprises the battery pack.

According to the vehicle disclosed by the utility model, the vehicle comprises the battery pack, the controller can be electrically connected to the driving member for driving the closing member to move between the opening position and the closing position so as to control the operation of the driving member, the controller can be connected to the external temperature and humidity sensor and the internal temperature and humidity sensor so as to acquire the external temperature and humidity information and the internal temperature and humidity information, and the controller can control the operation of the driving member according to the external temperature and humidity information and the internal temperature and humidity information, so that when the battery pack is connected to the controller and the driving member, the action of the driving member can be controlled according to the current internal temperature and humidity information and the external temperature and humidity information, and then the driving member is controlled to move to the opening position when the driving member is required to be moved to the opening position so as to reduce the possibility of condensation in the shell to generate condensed water through ventilation, and avoid damaging the battery of the battery pack.

Drawings

In order that the advantages of the utility model will be readily understood, a more particular description of the utility model briefly described above will be rendered by reference to specific embodiments that are illustrated in the appended drawings. Understanding that these drawings depict only typical embodiments of the utility model and are not therefore to be considered to be limiting of its scope, the utility model will be described and explained with additional specificity and detail through the use of the accompanying drawings.

Fig. 1 is a schematic perspective view of a battery pack according to a preferred embodiment of the present utility model;

fig. 2 is another perspective view of the battery pack of fig. 1, wherein a closure member at the second vent is not shown; and

fig. 3 is a partially enlarged schematic view of a portion of the battery pack of fig. 2.

Description of the reference numerals

110: the housing 111: side wall

112: top wall 113: first ventilation hole

114: second ventilation holes 115: air vent

120: bottom case 130: filtering component

140: ventilation valve 150: external temperature and humidity sensor

160: closing member 170: top shell

Detailed Description

In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present utility model. It will be apparent, however, to one skilled in the art that embodiments of the utility model may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring the embodiments of the utility model.

Preferred embodiments of the present utility model will be described below with reference to the accompanying drawings. It should be noted that the terms "upper," "lower," and the like are used herein for purposes of illustration only and not limitation.

Herein, ordinal words such as "first" and "second" cited in the present utility model are merely identifiers and do not have any other meaning, such as a particular order or the like.

In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present utility model. It will be apparent that embodiments of the utility model may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present utility model are described in detail below, however, the present utility model may have other embodiments in addition to these detailed descriptions.

The utility model provides a battery pack. The battery pack can exchange air with air outside the battery pack, thereby reducing the possibility of condensation inside the housing 110 to generate condensed water.

As shown in fig. 1 to 3, the battery pack includes a case 110. The case 110 includes a top case 170, a bottom case 120, and a battery. The top housing 170 has side walls 111 and a top wall 112. The side wall 111 is configured as a circumferentially closed ring structure. The axial direction of the side wall 111 is the height direction of the housing 110. A top wall 112 is connected to the top end of the side wall 111. Specifically, the side walls 111 include two first side walls and two second side walls. The plane of the first side wall is perpendicular to the plane of the second side wall. The two first side walls and the two second side walls are connected end to form a circumferentially closed annular structure. In this way, the top case 170 is constructed in a substantially rectangular parallelepiped structure. The top housing 170 has an interior cavity and a bottom opening in communication with the interior cavity. The bottom case 120 is connected to the bottom end of the top case 170 to close the bottom opening. The battery is disposed within the housing 110.

The top case 170 has ventilation holes and ventilation holes 115. The ventilation holes and the ventilation holes 115 are arranged at intervals.

The battery pack also includes a closure member 160. The closure member 160 is movably connected to the top housing 170 between an open position and a closed position. For example, the closure member 160 may be a plate. The closure member 160 is capable of closing the vent. The closure member 160 may be pivotally connected to the side wall 111. With the closure member 160 in the closed position, the closure member is capped to close the vent. At this time, the closing member 160 is located at the outside of the center of the later filtering member 130 away from the top case 170. The closing member 160 covers the later filtering member 130.

It will be appreciated that in an embodiment not shown, the closure member may also be located inboard of the filter member near the centre of the top shell.

With the closure member 160 in the open position, the vent is open. At this time, the cavity inside the top case 170 may be ventilated (ventilated) with the outside of the top case 170.

As shown in fig. 1 and 2, the battery pack further includes a ventilation valve 140. The ventilation valve 140 may be a waterproof ventilation valve. The ventilation valve 140 is inserted through the ventilation hole 115. In this way, the inner cavity of the top case 170 and the outside of the top case 170 may be communicated through the ventilation valve 140 so that air may circulate through the ventilation valve 140, thereby preventing the explosion of the battery pack.

The battery pack also comprises a temperature and humidity sensor for acquiring temperature and humidity information. The temperature and humidity sensors include an internal temperature and humidity sensor (not shown) and an external temperature and humidity sensor 150. The internal temperature and humidity sensor is disposed in the housing 110, and is used for acquiring internal temperature and humidity information indicating the temperature and humidity of air inside the housing 110. The external temperature and humidity sensor 150 is disposed outside the housing 110 for collecting external temperature and humidity information indicating the temperature and humidity of air outside the housing 110.

In this embodiment, the controller may be electrically connected to the driving member that drives the closing member 160 to move between the open position and the closed position, so as to control the operation of the driving member, and may be further connected to the external temperature and humidity sensor 150 and the internal temperature and humidity sensor, so as to acquire external temperature and humidity information and internal temperature and humidity information, and the controller may control the operation of the driving member according to the external temperature and humidity information and the internal temperature and humidity information, so that when the battery pack is connected to the controller and the driving member, the operation of the driving member may be controlled according to the current internal temperature and humidity information and the external temperature and humidity information, and then the driving member may be controlled to move to the open position when needed, so as to reduce the possibility of condensation in the housing 110 to generate condensed water through ventilation holes, thereby avoiding damaging the battery of the battery pack.

Preferably, the battery pack further includes the aforementioned controller (not shown) and a driving member (not shown).

And the controller determines the number of water molecules in the unit volume according to the internal temperature and humidity information. And the controller determines the number of water molecules in the unit volume according to the external temperature and humidity information. The controller controls the driving member to drive the closing member 160 to move to the open position when the number of water molecules in the inner unit volume > the number of water molecules in the outer unit volume. Thereby, the possibility of condensation inside the case 110 can be further reduced.

The controller controls the driving member to drive the closing member 160 to move to the closed position when the number of water molecules in the inner unit volume is less than or equal to the number of water molecules in the outer unit volume.

It should be noted that, the method of determining the number of water molecules in the internal unit volume by the controller according to the internal temperature and humidity information and the method of determining the number of water molecules in the external unit volume by the controller according to the external temperature and humidity information are the prior art, and are not described herein.

When the battery pack works, the temperature in the battery pack is high, and much water vapor is generated. At this time, the closing member 160 is moved to the open position to perform ventilation, so that more water vapor can be discharged, thereby further reducing the possibility of condensation inside the housing 110.

When the battery pack stops operating, the temperature of the inside of the case 110 is low. At this time, the closing member 160 may be moved to the closed position to reduce ventilation, reducing the possibility of condensed water generated inside the case 110.

Preferably, referring to fig. 1 to 3, the vent holes are located at the side wall 111 of the top case 170. Thereby, ventilation is facilitated.

As shown in fig. 1 to 3, the vent hole is located at the top end of the side wall 111. This can prevent water vapor from accumulating at the tip of the housing 110, and can perform ventilation more cleanly.

Preferably, the vent holes are plural. Thus, the plurality of ventilation holes ventilate together, and ventilation can be performed more quickly.

It is further preferred that the opposite end faces of the housing are provided with ventilation holes, respectively, as shown in fig. 1 to 3. Specifically, the vent holes include a first vent hole 113 and a second vent hole 114. In the first direction D1, a first end surface of the top case 170 is provided with a first ventilation hole 113, and a second end surface of the top case 170 opposite to the first end surface is provided with a second ventilation hole 114. That is, the first sidewall is provided with the first ventilation hole 113, and the second sidewall is provided with the second ventilation hole 114. Thereby, air outside the housing 110 enters the housing 110 from the first ventilation hole 113. Air within the housing 110 exits the housing 110 through the second vent 114. In this way, ventilation can be performed more quickly.

It will be appreciated that in one embodiment, not shown, one end face of the top case is provided with a first vent hole and the other end face of the top case is provided with a second vent hole in the second direction D2.

In another embodiment, not shown, one end surface of the housing is provided with a first vent hole and the other end surface of the housing is provided with a second vent hole along the third direction D3. That is, the top wall is provided with a first vent hole, and the bottom shell is provided with a second vent hole.

When the battery pack is mounted on a vehicle, the longitudinal direction of the top case 170 is parallel to the front-rear direction of the vehicle, the width direction of the top case 170 is parallel to the width direction of the vehicle, and the height direction of the top case 170 is parallel to the height direction of the vehicle. The first direction D1 is parallel to the length direction of the top case 170. The first direction D1 is perpendicular to the plane in which the first sidewall is located. The second direction D2 is parallel to the width direction of the top case 170. The second direction D2 is perpendicular to the plane in which the second sidewall lies. The third direction D3 is parallel to the height direction of the top case 170. The third direction D3 is perpendicular to the plane of the top wall 112.

When the vehicle is running, the wind direction outside the vehicle is directed from the first ventilation hole 113 toward the second ventilation hole 114. In this way, the first ventilation hole 113 and the second ventilation hole 114 can be provided to allow ventilation more quickly.

With continued reference to fig. 1 and 2, the vent 115 is located in the top wall 112 of the top case 170. The ventilation valve 140 is disposed through the top wall 112. Thereby, the ventilation is convenient.

With continued reference to fig. 1-3, the battery pack further includes a filter member 130. The filter member 130 is a porous structure. The filter member 130 can block fine dust while passing air. For example, the filter member 130 may include a filter mesh or a filter membrane. The filter member 130 is connected to the top case 170. The filter member 130 covers the vent hole. In this way, the filter member 130 may prevent fine sand from entering the housing 110 when ventilation is performed through the ventilation holes.

Further preferably, the filter member 130 may be polytetrafluoroethylene (e-PTFE) made of Expanded PTFE. Thereby, the weight of the filter member 130 is small.

As shown in fig. 1 and 2, both the internal and external temperature and humidity sensors 150 are connected to the top wall 112. Along a first direction D1, the internal temperature and humidity sensor is located at an end of the top wall 112. An external temperature and humidity sensor 150 is located at an end of the top wall 112 along the first direction D1. Therefore, the operation of driving the closing member 160 to move more accurately according to the external temperature and humidity information and the internal temperature and humidity information is more accurate, and the possibility of internal condensation of the housing 110 can be further reduced.

As shown in fig. 1 and 2, the ventilation holes 115 are located between both ends of the top case 170 along the first direction D1. Therefore, the air-permeable mattress is more convenient to breathe. In the second direction D2, the ventilation holes 115 are located at one end of the top wall 112. Thus, the strength of the top case 170 is high.

The utility model further provides a vehicle. The vehicle comprises the battery pack.

In this embodiment, the vehicle includes the aforementioned battery pack, and the controller may be electrically connected to the driving member that drives the closing member 160 to move between the open position and the closed position, so as to control the operation of the driving member, and may be further connected to the external temperature and humidity sensor 150 and the internal temperature and humidity sensor, so as to acquire the external temperature and humidity information and the internal temperature and humidity information, and the controller may control the operation of the driving member according to the external temperature and humidity information and the internal temperature and humidity information, so that when the battery pack is connected to the controller and the driving member, the operation of the driving member may be controlled according to the current internal temperature and humidity information and the external temperature and humidity information, and then the driving member may be controlled to move to the open position when necessary, so as to exchange air through the ventilation holes, thereby reducing the possibility of condensation in the housing 110 to generate condensed water, and avoiding damaging the battery of the battery pack.

The present utility model has been illustrated by the above-described embodiments, but it should be understood that the above-described embodiments are for purposes of illustration and description only and are not intended to limit the utility model to the embodiments described. In addition, it will be understood by those skilled in the art that the present utility model is not limited to the embodiments described above, and that many variations and modifications are possible in light of the teachings of the utility model, which variations and modifications are within the scope of the utility model as claimed. The scope of the utility model is defined by the appended claims and equivalents thereof.

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the utility model. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.

Claims (10)

1. A battery pack, the battery pack comprising:

a housing having a vent;

a closure member movably connected to the housing between a closed position closing the vent and an open position opening the vent, the closure member being operable for electrical connection with a controller;

the temperature and humidity sensor is arranged inside and outside the shell and used for collecting temperature and humidity information, and the temperature and humidity sensor can be used for being electrically connected with the controller.

2. The battery pack of claim 1, wherein the battery pack comprises a plurality of battery cells,

the vent holes are located in the side wall of the housing and/or

The vent is located in a top wall of the housing.

3. The battery pack according to claim 1, wherein the opposite end surfaces of the case are provided with the vent holes, respectively.

4. The battery pack of claim 1, further comprising a filter member connected to the housing, the filter member covering the vent.

5. The battery pack of claim 1, wherein the housing further has a vent located at a top wall of the housing, the battery pack further comprising a vent valve disposed at the vent for venting.

6. The battery pack of claim 5, wherein the vent is located between the ends of the housing in a first direction.

7. The battery pack of claim 1, further comprising a controller and a drive member, the drive member coupled to the closure member for driving the closure member between the closed position and the open position, the controller electrically coupled to the drive member and the temperature and humidity sensor, the controller controlling the actuation of the drive member based on the temperature and humidity information.

8. The battery pack according to claim 7, wherein the temperature and humidity information includes internal temperature and humidity information collected by an internal temperature and humidity sensor located in the housing and external temperature and humidity information collected by an external temperature and humidity sensor located outside the housing, the controller determines the number of water molecules in an internal unit volume according to the internal temperature and humidity information, determines the number of water molecules in an external unit volume according to the external temperature and humidity information, and controls the driving member to drive the closing member to move to the opening position when the number of water molecules in the internal unit volume > the number of water molecules in the external unit volume.

9. The battery pack of claim 7, wherein the controller controls the drive member to drive the closure member to the open position when the battery pack is in operation.

10. A vehicle characterized in that it comprises a battery pack according to any one of claims 1 to 9.