Battery pack, electric equipment and rack structure for battery pack

Abstract

The utility model relates to a battery pack, electric equipment and a rack structure for the battery pack, the battery pack comprises a shell, a battery cell assembly and a glue pouring structure, a containing cavity is formed in the shell, and the battery cell assembly and the glue pouring structure are both arranged in the containing cavity. The shell is provided with a first end and a second end which are oppositely arranged, and the first end is provided with an exhaust hole communicated with the containing cavity. The exhaust hole is at least used for exhausting gas in the accommodating cavity to the outside of the battery pack when the battery pack is in a first state, the battery pack has the first state, and in the first state, the battery pack is obliquely placed, and the first end is higher than the second end. Through the exhaust hole located at the first end, when the battery pack is in a first state, the liquid level of the glue filling structure and the top of the shell are arranged at an angle, so that the glue filling structure and the upper cover of the shell can be sequentially contacted in the direction from the second end to the first end of the shell; and air trapping caused by disordered contact between the glue filling structure and the upper cover of the shell is reduced.

Description

Technical Field

[0001] The present disclosure relates to the technical field of battery packs, and in particular, to a battery pack, an electrical device, and a stand structure for the battery pack. Background Art

[0002] Battery packs are devices used to provide energy to electrical devices (such as vehicles) and are their core components. In related technologies, after the battery pack is potted, trapped air can easily form between the cover and the battery pack shell. This results in insufficient bonding area between the potting compound and the inner side of the upper cover, hindering the strength and rigidity of the battery pack. Utility Model Content

[0003] The purpose of the present disclosure is to provide a battery pack, an electrical device, and a stand structure for the battery pack to solve the above-mentioned technical problems.

[0004] In order to achieve the above-mentioned object, as a first aspect of the present disclosure, the present disclosure provides a battery pack, including a housing, a battery cell assembly and a glue potting structure;

[0005] The housing has a receiving cavity, and the battery core assembly and the glue potting structure are both arranged in the receiving cavity;

[0006] The housing has a first end and a second end opposite to each other, the first end being provided with an exhaust hole communicating with the accommodating cavity;

[0007] The exhaust hole is at least used to discharge the gas in the accommodating cavity to the outside of the battery pack when the battery pack is in a first state, wherein the battery pack has a first state, in which the battery pack is tilted and the first end is higher than the second end.

[0008] Optionally, the vent is further used to discharge the gas in the accommodating cavity to the outside of the battery pack when the battery pack is in the second state;

[0009] Wherein, in the second state, the battery pack is placed horizontally.

[0010] Optionally, the housing includes a lower shell and an upper cover, and the upper cover covers the opening of the lower shell;

[0011] The upper cover includes an upper cover body and an electrical cover, wherein the electrical cover is arranged at one end of the upper cover body and defines an electrical compartment for accommodating electric control components together with the upper cover body;

[0012] Wherein, the exhaust hole is arranged on the upper cover body and is connected to the electrical compartment.

[0013] Optionally, the outer surface of the shell has a vibration contact surface, and the vibration contact surface is used to fit with the vibration surface of the vibration mechanism.

[0014] Optionally, the housing includes an upper cover, a bottom plate and side plates;

[0015] The vibration contact surface is provided on at least one of the upper cover, the bottom plate, and the side plate.

[0016] Optionally, the side panel includes two first side panels arranged opposite to each other along a first direction, a first filling cavity is defined between the first side panels and the battery cell assembly, and the glue potting structure includes a first glue potting portion, which is disposed in the first filling cavity;

[0017] Each of the first side plates is provided with the vibration contact surface.

[0018] Optionally, the side plate includes two second side plates arranged opposite to each other along a second direction, a second filling cavity is defined between the second side plates and the battery cell assembly, and the glue potting structure includes a second glue potting portion, and the second glue potting portion is provided in the second filling cavity;

[0019] The vibration contact surface is provided on each of the second side plates.

[0020] As a second aspect of the present disclosure, the present disclosure provides an electrical device including the above-mentioned battery pack.

[0021] As a third aspect of the present disclosure, the present disclosure provides a stand structure for a battery pack, wherein the battery pack is the battery pack described above;

[0022] The stand structure includes a driving mechanism, a base and a mounting platform, wherein the mounting platform is rotatably mounted on the base and is used to mount a battery pack;

[0023] The driving mechanism is used to drive the mounting platform to rotate relative to the base, so that the battery pack has at least the first state.

[0024] Optionally, in the first state, the angle between the plane where the bottom plate of the housing is located and the horizontal plane is 1°-5°.

[0025] The driving mechanism is used to drive the mounting platform to rotate relative to the base, so that the battery pack can continue to rotate from the first state to the second state;

[0026] In the second state, the plane where the bottom plate of the housing is located is parallel to the horizontal plane;

[0027] Moreover, the rotation speed of the mounting platform relative to the base is set so as to be able to start from the glue liquid state to the solidified state during the conversion process from the first state to the second state.

[0028] Optionally, the platform structure further includes a power member and a plurality of fixed claws;

[0029] The plurality of fixing claws are arranged on the mounting platform, and the fixing claws are used to be releasably connected to the battery pack;

[0030] The power member is used to drive the fixed claw to move so as to engage with or release the battery pack.

[0031] Optionally, the driving mechanism includes a rotary motor, an output end of which is in driving connection with the mounting platform, for driving the mounting platform to rotate relative to the base;

[0032] The platform structure further includes a rotation angle controller, which is used to control the rotation angle parameters of the output end of the rotating motor.

[0033] Optionally, the stand structure further includes a vibrator, which is configured to contact an outer surface of the housing and vibrate the battery pack.

[0034] Through the above technical solution, through the exhaust hole located at the first end, when the battery pack is in the first state, the glue filling structure in the accommodating cavity and in the glue liquid state can be gathered at the second end of the shell under the action of gravity, so that the liquid level of the glue filling structure and the top of the shell (such as the upper cover) are set at an angle. Compared with the other end, one end of the liquid level contacts the upper cover of the shell first during the rising process, so that the glue filling structure and the upper cover of the shell can be contacted sequentially along the direction from the second end to the first end of the shell, and in the rising process of the glue filling structure (i.e., the foaming process), air is discharged through the exhaust hole at the same time. In this way, the situation of trapped air caused by the disordered contact between the glue filling structure and the upper cover of the shell can be reduced, thereby reducing the problem of loose bonding caused by the inability of gas to discharge and occupy the space in the accommodating cavity, thereby improving the structural strength and rigidity of the battery pack.

[0035] Moreover, when an excessive amount of potting glue is injected, the excess foam can be discharged through the exhaust hole after rising. This can prevent the excessive foam from being too large in volume, causing the shell to be deformed by stress, and ensure the normal structure of the battery pack.

[0036] Other features and advantages of the present disclosure will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] The accompanying drawings are used to provide a further understanding of the present disclosure and constitute a part of the specification. Together with the following detailed description, they are used to explain the present disclosure but do not constitute a limitation of the present disclosure. In the accompanying drawings:

[0038] Figure 1 is a side view schematic diagram of a battery pack provided by one embodiment of the present disclosure when located on a stand structure, wherein the battery pack is in a first state;

[0039] Figure 2 is a side view schematic diagram of a battery pack provided by one embodiment of the present disclosure when located on a stand structure, wherein the battery pack is in a second state;

[0040] Figure 3 is a schematic top view of a portion of the structure of a battery pack provided in one embodiment of the present disclosure, wherein the upper cover is not shown;

[0041] Figure 4 yes Figure 3 Schematic diagram of the cross section along the AA direction;

[0042] Figure 5 yes Figure 3 Schematic diagram of the cross section along the BB direction;

[0043] Figure 6 is a three-dimensional schematic diagram of a cell assembly of a battery pack provided in one embodiment of the present disclosure;

[0044] Figure 7 Schematic diagram of an explosion of a battery pack provided in one embodiment of the present disclosure.

[0045] Description of Reference Numerals

[0046] 100-battery pack; 200-stand structure; 201-base; 202-mounting table; 203-fixing claw; 1-shell; 11-accommodating chamber; 111-first filling cavity; 112-second filling cavity; 113-third filling cavity; 114-fourth filling cavity; 115-electrical compartment; 12-first end; 13-second end; 14-lower shell; 15-upper cover; 151-upper cover body; 152-electrical cover; 16-exhaust hole; 17-bottom plate; 18-side panel; 181-first side panel; 182-second side panel; 183-vibration contact surface; 2-battery cell assembly; 21-battery cell unit; 3-glue filling structure; 31-first glue filling part; 32-second glue filling part; 33-third glue filling part; 34-fourth glue filling part. DETAILED DESCRIPTION

[0047] The following describes the specific embodiments of the present disclosure in detail with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are only used to illustrate and explain the present disclosure and are not intended to limit the present disclosure.

[0048] In this disclosure, unless otherwise indicated, directional terms such as "upper" and "lower" are generally defined with reference to the drawing orientation of the corresponding drawings. These terms are used solely to facilitate description and simplify the present disclosure. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, structure, or operation. Therefore, they should not be construed as limitations of the present disclosure. "Inner" and "outer" refer to the inner and outer sides of the corresponding components. Furthermore, the terms "first" and "second," etc., are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0049] It should also be noted that, in the description of this disclosure, unless otherwise expressly specified or limited, the terms "disposed," "connected," "connected," and "installed" should be understood broadly. For example, they may refer to fixed connections, detachable connections, or integral connections; and they may refer to direct connections or indirect connections via an intermediary. Those skilled in the art will understand the specific meanings of these terms in this disclosure based on specific circumstances.

[0050] As mentioned above, in the related art, the "air trapping" phenomenon is likely to occur between the battery pack cover and the battery pack shell, resulting in insufficient bonding area between the potting compound and the inner side of the upper cover.

[0051] In view of this, as the first aspect of the present disclosure, Figures 1 to 7 As shown, the present disclosure provides a battery pack 100, including a housing 1, a battery cell assembly 2, and a glue potting structure 3. The housing 1 has a receiving cavity 11, and the battery cell assembly 2 and the glue potting structure 3 are both disposed in the receiving cavity 11. The housing 1 has a first end 12 and a second end 13 disposed opposite each other. The first end 12 is provided with a vent 16 that communicates with the receiving cavity 11.

[0052] The exhaust hole 16 is at least used to discharge the gas in the accommodating cavity 11 to the outside of the battery pack 100 when the battery pack 100 is in a first state, wherein the battery pack 100 has a first state. In the first state, the battery pack 100 is placed at an angle, for example, the plane where the bottom plate 17 of the outer shell 1 is located (such as the bottom plane of the bottom plate 17) is set at an angle to the horizontal plane, and the first end 12 of the outer shell 1 is higher than the second end 13.

[0053] Since the glue potting structure 3 of the battery pack 100 is still in a glued state after the battery pack 100 is glued and the upper cover 15 is fastened, the battery pack 100 can be placed in a first state, so that the glue potting structure 3 in a glued state is collected at the second end 13 of the housing 1, that is, at the position corresponding to the second end 13 of the accommodating cavity 11. In other words, the liquid level at one end, where the glue is at a higher position, contacts the top of the housing 1 (such as the upper cover 15 below), while the liquid level at the other end is located below, thereby causing the glue potting structure 3 to be activated in this state. In this state, the activated glue potting structure 3 will sequentially contact the upper cover 15 of the housing 1 along the direction from the second end 13 to the first end 12 of the housing 1, thereby driving the air between the glue potting structure 3 and the upper cover 15 of the housing 1 along the direction from the second end 13 to the first end 12 of the housing 1 to the vent 16 located at the first end 12, and then be discharged through the vent 16.

[0054] Through the above technical solution, through the exhaust hole 16 located at the first end, when the battery pack 100 is in the first state, the glue potting structure 3 in the glue liquid state located in the accommodating cavity 11 can be collected at the second end 13 of the shell 1 under the action of gravity, so that the liquid level of the glue potting structure 3 and the top of the shell 1 (such as the upper cover 15) are set at an angle. Compared with the other end, one end of the liquid level contacts the upper cover 15 of the shell 1 first during the foaming process, so that the glue potting structure 3 and the upper cover 15 of the shell 1 can be sequentially contacted along the direction from the second end 13 to the first end 12 of the shell 1. In addition, during the foaming process of the glue potting structure 3 (i.e., the foaming process), air is discharged through the exhaust hole 16 at the same time. In this way, the situation of trapped air due to disordered contact between the glue potting structure 3 and the upper cover 15 of the shell 1 can be reduced, thereby reducing the problem of loose bonding caused by the glue potting structure 3 not being able to fully fit and bond with the top of the shell 1 due to the gas not being able to be discharged. The structural strength and rigidity of the battery pack 100 can be improved.

[0055] Moreover, when the potting glue is injected in excess, the excess foam can be discharged through the exhaust hole 16 after rising. In this way, the volume of the excess foam can be prevented from being too large, causing the shell 1 to be deformed by force, thereby ensuring the normal structure of the battery pack 100.

[0056] When the amount of potting glue injected is insufficient, the vent hole 16 can also serve as a glue filling hole, and glue is injected again through the vent hole 16 so that the space in the accommodating cavity 11 can be filled with the glue potting structure 3.

[0057] In order to further improve the exhaust effect, optionally, as Figure 2 As shown, the exhaust hole 16 is also used to discharge the gas in the accommodating cavity 11 to the outside of the battery pack 100 when the battery pack 100 is in the second state.

[0058] In the second state, the battery pack 100 is placed horizontally, for example, the plane where the bottom plate 17 of the housing 1 is located (such as the bottom plane of the bottom plate 17 ) is parallel to the horizontal plane.

[0059] During the transition of the battery pack 100 from the first state to the second state, the bottom plate 17 of the outer shell 1 rotates from a state at an angle to a state parallel to the horizontal plane. After the liquid level at the upper end of the glue filling structure 3 located in the accommodating cavity 11 contacts the top of the outer shell 1, as the battery pack 100 rotates, the un-expanded glue also moves toward the first end 12 of the outer shell 1.

[0060] Since the liquid level of the glue filling structure 3 is always set at an angle to the top of the shell 1 (such as the upper cover 15) during the rotation process, the glue filling structure 3 located on the upper side is always in contact with the top of the shell 1 compared to the glue filling structure 3 located on the lower side, thereby ensuring that the glue filling structure 3 can contact the top of the shell 1 in sequence from the second end 13 to the first end 12, and further controlling the time sequence of the glue filling structures 3 at different positions contacting the upper cover 15 of the shell 1 during the starting process, thereby reducing the possibility of air trapped in the shell 1 of the battery pack 100.

[0061] At the same time, since the vent 16 at the first end 12 is not necessarily located at the highest point of the battery pack 100 in the first state, it is easy for the glue potting structure 3 to not be completely filled. However, in the second state, since the battery pack 100 is placed horizontally, after the glue is filled through the vent 16, the glue potting structure 3 after initiation will not be tilted by gravity and can fill the gap at the first end 12, thus ensuring that the battery pack 100 is well saturated.

[0062] Alternatively, as Figure 1 and Figure 2 As shown, the housing 1 includes a lower shell 14 and an upper cover 15 , and the upper cover 15 covers the opening of the lower shell 14 ;

[0063] The upper cover 15 includes an upper cover body 151 and an electrical cover 152. The electrical cover 152 is disposed at one end of the upper cover body 151 and, together with the upper cover body 151, defines an electrical compartment 115 for accommodating the electrical control components of the battery pack 100. For example, the electrical compartment 115 can be used to accommodate the electrical control module of the battery pack 100. The exhaust hole 16 is disposed in the upper cover body 151 and communicates with the electrical compartment 115.

[0064] As the glue-filled structure 3 expands, air in the accommodating chamber 11 can be discharged through the vents 16. Since air is lightweight and easily flows upward, locating the vents 16 on the upper cover body 151 facilitates the discharge of air from the accommodating chamber 11, reducing the difficulty of air discharge. Furthermore, since the glue-filled structure 3 expands and expands from the bottom up, the air in the accommodating chamber 11 is driven upward during the expansion process. Locating the vents 16 on the upper cover body 151 also facilitates the expansion process of the glue-filled structure 3 and further facilitates the discharge of air from the accommodating chamber 11.

[0065] After the battery pack 100 is potted and the upper cover 15 is closed, the opening of the electrical compartment 115 is open, allowing air exhausted through the vents 16 to escape from the battery pack 100 through the opening of the electrical compartment 115. Furthermore, if an excessive amount of potting glue is injected, the excess foam can be discharged into the electrical compartment 115 through the vents 16 after rising. This prevents the excessive foam from expanding and causing deformation of the outer shell 1, thus ensuring the proper structure of the battery pack 100.

[0066] Alternatively, as Figure 1 and Figure 2 As shown, the electrical compartment 115 is disposed at the rear end of the upper cover body 151. Since the electronic control components in the electrical compartment 115 need to be electrically connected to the battery cell assembly 2 located in the accommodating cavity 11, and the connection wires of the battery cell assembly 2 are usually disposed at the rear end of the battery cell assembly 2, disposing the electrical compartment 115 at the rear end of the upper cover body 151 facilitates the electrical connection between the battery cell assembly 2 located in the accommodating cavity 11 and the electronic control components in the electrical compartment 115.

[0067] Here, it can be understood that the rear end can be understood as the end close to the rear of the vehicle when the vehicle is driving normally.

[0068] In order to further reduce the trapped air in the accommodating cavity 11, optionally, the outer surface of the shell 1 has a vibration contact surface 183, and the vibration contact surface 183 is used to fit with the vibration surface of the vibration mechanism. Since during the glue filling process, the glue is poured into the gap from the opening of the gap between the battery cell assembly 2 and the shell 1, resulting in the presence of trapped air between the gap and the glue that has not yet escaped during the glue filling. At the same time, a similar situation also exists in the gap between adjacent battery cell units 21. By providing a vibration contact surface 183 on the outer surface of the shell 1, the vibration surface of the vibration mechanism can be fitted with the shell 1 through the vibration contact surface 183, so that the vibration of the vibration mechanism is transmitted to the shell 1 and the glue filling structure 3 located in the shell 1 through the vibration contact surface 183, and the air in the glue filling structure 3 in the glue liquid state is discharged from the closed space formed by the gap and the glue filling structure 3 by vibration, thereby further discharged from the accommodating cavity 11.

[0069] In order to enhance the effect of vibration in removing trapped air, optionally, asFigure 7 As shown, the housing 1 includes an upper cover 15, a bottom plate 17 and a side plate 18, and at least one of the upper cover 15, the bottom plate 17 and the side plate 18 is provided with a vibration contact surface 183. The gap between the battery cell assembly 2 and the housing 1 is mainly concentrated between the upper cover 15 and the side plate 18 and the battery cell assembly 2, and there is also a gap between adjacent battery cell units 21 that needs to be filled with the glue structure 3. In the above gap, due to structural reasons, trapped air is more likely to be generated. By providing a vibration contact surface 183 on at least one of the upper cover 15, the bottom plate 17 and the side plate 18, the vibration contact surface 183 is in contact with the vibration surface of the vibration mechanism, and the trapped air concentrated in the gap can be driven out by vibration, thereby reducing the trapped air in the accommodating cavity 11.

[0070] Alternatively, as Figure 3 and Figure 4 As shown, the side panel 18 includes two first side panels 181 arranged opposite to each other along a first direction, and a first filling cavity 111 is provided between each first side panel 181 and the battery cell assembly 2. The glue filling structure 3 includes a first glue filling part 31, and the first glue filling part 31 is arranged in the first filling cavity 111. Each first side panel 181 is provided with a vibration contact surface 183.

[0071] Since the first filling cavity 111 is enclosed by the battery cell assembly 2 and the first side plate 181, and the first glue potting portion 31 disposed within the first filling cavity 111 is filled through the opening of the first filling cavity 111 during glue potting, some gas within the first filling cavity 111 may not be able to be discharged through other channels. By contacting the vibrating surface of the vibration mechanism, vibration can be transmitted to the first glue potting portion 31, thereby discharging any gas that has not been discharged in time within the first glue potting portion 31 through vibration.

[0072] Alternatively, as Figure 3 and Figure 5 As shown, the side panel 18 includes two second side panels 182 arranged opposite to each other along the second direction, with a second filling cavity 112 defined between the two second side panels 182 and the battery cell assembly 2. The glue potting structure 3 includes a second glue potting portion 32 disposed in the second filling cavity 112, and a vibration contact surface 183 is provided on each second side panel 182. The vibration contact surface 183 located on the second side panel 182 can expel trapped air from the second glue potting portion 32 in the second filling cavity 112 by vibration, thereby further reducing trapped air in the accommodating cavity 11.

[0073] Optionally, the first direction here may be the width direction of the vehicle in a normal driving state, and the second direction may be the length direction of the vehicle in a normal driving state.

[0074] Alternatively, as Figure 2 、 Figure 4 andFigure 5 As shown, a third filling cavity 113 may be defined between the upper cover 15 of the housing 1 and the battery cell assembly 2. The glue potting structure 3 includes a third glue potting portion 33 disposed in the third filling cavity 113. A vibration contact surface 183 is provided on the upper cover 15. To reduce air entrapment between the inner side of the upper cover 15 and the third glue potting portion 33 during the bonding process, a vibration contact surface 183 is provided on the upper cover 15. This vibration can also expel air trapped between the third glue potting portion 33 during bonding to the upper cover 15.

[0075] Alternatively, as Figure 4 、 Figure 5 and Figure 6 As shown, the battery cell assembly 2 may include a plurality of battery cell units 21, and adjacent battery cell units 21 and the bottom plate 17 of the housing 1 enclose a fourth filling cavity 114. The glue potting structure 3 includes a fourth glue potting portion 34, and the fourth glue potting portion 34 is disposed in the fourth filling cavity 114. A vibration contact surface 183 may be provided on the bottom plate 17 of the housing 1. The vibration contact surface 183 on the bottom plate 17 of the housing 1 can transmit vibration to the fourth glue potting portion 34 by contacting with the vibration surface of the vibration mechanism, so that trapped air in the fourth glue potting portion 34 can be discharged through vibration.

[0076] As a second aspect of the present disclosure, the present disclosure further provides an electrical device, including the above-mentioned battery pack 100.

[0077] Optionally, the electrical device may be a vehicle, wherein the vehicle may be a new energy vehicle, which may be a pure electric vehicle, a hybrid electric vehicle, or an extended-range vehicle, etc., which is not specifically limited in this disclosure.

[0078] Of course, in other application scenarios, the above-mentioned electrical equipment can also be vehicles such as ships or airplanes that need to be powered by the battery pack 100 in the fields of energy storage, aerospace or water transportation.

[0079] As a third aspect of the present disclosure, Figure 1As shown, the present disclosure provides a stand structure 200 for a battery pack 100, and the battery pack 100 is the above-mentioned battery pack 100. The stand structure 200 includes a driving mechanism, a base 201 and a mounting platform 202. The mounting platform 202 is rotatably mounted on the base 201. The mounting platform 202 is used to mount the battery pack 100. The driving mechanism is used to drive the mounting platform 202 to rotate relative to the base 201, so that the battery pack 100 has at least a first state. Before starting the potting, the lower shell 14 of the outer shell 1 can be fixed on the mounting platform 202. At this time, the plane where the mounting platform 202 is located is set parallel to the horizontal plane. After the glue potting is completed and the upper cover 15 is fastened, the mounting platform 202 can be rotated under the drive of the driving mechanism, thereby driving the battery pack 100 mounted on the mounting platform 202 to rotate together, so that the battery pack 100 is in the first state.

[0080] The present disclosure does not limit the size of the angle between the bottom plate 17 of the housing 1 and the horizontal plane in the first state. In one embodiment provided in the present disclosure, the angle between the plane where the bottom plate 17 is located and the horizontal plane can be 1°-5°.

[0081] Since the glue potting structure 3 is in a glue liquid state, it will flow in the accommodating cavity 11 as the shell 1 tilts. However, different parts in the accommodating cavity 11 require different volumes of the glue potting structure 3. The flow may easily cause the volume of the glue potting structure 3 in each part to be different from the preset volume, thereby causing the problem of uneven glue potting.

[0082] To this end, a glue blocking structure (such as a glue blocking block) is also provided in the accommodating cavity 11, thereby dividing the accommodating cavity 11 into different parts, and the angle between the plane where the bottom plate 17 is located and the horizontal plane is set to 1°-5°, which can ensure that in the first state, the glue located in different parts will not cross the glue blocking block and enter other parts, thereby ensuring that the amount of glue in each part will not change, thereby ensuring the uniformity of the overall glue filling.

[0083] Alternatively, as Figure 2 As shown, the driving mechanism is used to drive the mounting platform 202 to rotate relative to the base 201, so that the battery pack 100 can continue to rotate from the first state to the second state.

[0084] In the second state, the plane where the bottom plate 17 of the housing 1 is located is parallel to the horizontal plane, and the rotation speed of the mounting platform 202 relative to the base 201 is set to be able to start from the glue state to the solidified state during the transition from the first state to the second state.

[0085] When the glue potting structure 3 in the glue state in the accommodating cavity 11 begins to start, the battery pack 100 can be converted from the first state to the second state. At this time, the mounting platform 202 can also rotate in the opposite direction to the previous direction under the drive of the driving mechanism.

[0086] During the rotation in the process of setting, on the one hand, the flow of the glue filling structure 3 and the setting can be accelerated to a certain extent; on the other hand, the glue filling structure 3 can also be prevented from being concentrated at the second end 13 of the shell 1, so that the amount of the glue filling structure 3 in the first end 12 and the second end 13 of the shell 1 of the battery pack 100 is closer, and then the density of the glue filling structure 3 after setting at the first end 12 and the second end 13 is close, and the density of the whole battery pack 100 is more uniform. Moreover, during the rotation in the setting process, the trapped gas in the narrow blind hole gap can also be discharged. For example, the trapped gas in the first filling cavity 111, the second filling cavity 112 and the fourth filling cavity 114 can also be discharged with the rotation.

[0087] It should be noted here that the angular velocity of the rotation of the mounting table 202 is not limited by the present disclosure, and the angular velocity of the rotation of the mounting table 202 can be determined according to the setting speed of the glue filling structure 3, that is, the rotation speed of the mounting table 202 relative to the base 201 is set to be able to set from the glue liquid state to the solidification state in the conversion process from the first state to the second state, and the glue filling structure 3 can always be in line contact with the inner side surface of the upper cover 15 of the shell 1 during the setting process.

[0088] Since the battery cell assembly 2 is fixed by the structural glue and the bottom plate 17 of the shell 1, and a relatively slow rotation speed is adopted, the risk of displacement of the battery cell assembly 2 or other parts fixed by adhesion due to the fact that the strength of the adhesive has not been established can be reduced.

[0089] Optionally, as shown in Figure 1 and Figure 2 , the gantry structure 200 further comprises a power member and a plurality of fixed clamping jaws 203, the plurality of fixed clamping jaws 203 are arranged on the mounting table 202, the fixed clamping jaws 203 are used to releasably connect with the battery pack 100, and the power member is used to drive the fixed clamping jaws 203 to move to connect with or release the battery pack 100.

[0090] The plurality of fixed clamping jaws 203 can be arranged around the battery pack 100, and the fixed clamping jaws 203 have a first position and a second position. When the fixed clamping jaws 203 are arranged separately from the edge beam of the battery pack 100 at the first position, the battery pack 100 can be placed on or taken off the mounting table 202; when the fixed clamping jaws 203 are arranged in close contact with the edge beam of the battery pack 100 at the second position, the battery pack 100 is fixed on the mounting table 202.

[0091] Here, it should be noted that the movement of the fixed clamping jaws 203 can include movement and / or rotation, for example, see Figure 2When the fixing claw 203 needs to be converted from the first position to the second position, the fixing claw 203 can be rotated horizontally and moved vertically under the action of the power component to approach the battery pack 100, and abut against the battery pack 100, for example, abut against the side beam of the battery pack 100, thereby fixing the battery pack 100 on the mounting platform 202; and when the fixing claw 203 needs to be converted from the second position to the first position, the fixing claw 203 can be rotated horizontally and moved vertically away from the battery pack 100 under the action of the power component, thereby separating from the battery pack 100.

[0092] The present disclosure does not limit the specific type of the power component. For example, the power component may be a hydraulic cylinder or a pneumatic cylinder.

[0093] Optionally, the drive mechanism includes a rotary motor, and the platform structure 200 further includes a rotation angle controller. The output end of the rotary motor is in driving connection with the mounting platform 202, and is used to drive the mounting platform 202 to rotate relative to the base 201. The rotation angle controller is used to control the rotation angle parameter of the output end of the rotary motor, that is, to control the angle of rotation of the rotary motor, thereby controlling the angle between the plane on which the base plate 17 is located and the horizontal plane.

[0094] In order to further reduce the trapped air in the battery pack 100, the stand structure 200 optionally further includes a vibrator, which is used to contact the outer surface of the shell 1 and vibrate the battery pack 100. The vibrator has a vibrating surface covered with a contact layer. The vibrating surface of the vibrator can contact the vibrating surface of the shell 1 of the battery pack 100 through the contact layer, thereby transmitting the vibration of the vibrator to the shell 1 of the battery pack 100, thereby causing the trapped air in the glue potting structure 3 to be discharged through vibration.

[0095] The present disclosure does not limit the specific material of the contact layer. In one embodiment provided in the present disclosure, the contact layer may be a phenolic resin.

[0096] The present disclosure does not limit the vibration frequency of the vibrator. In one embodiment provided in the present disclosure, the vibration frequency provided by the vibrator is 70Hz-150Hz. In order to prevent the vibration frequency provided by the vibrator from being close to or the same as the fixed frequency of the outer shell 1 or the battery cell assembly 2 of the battery pack 100, thereby causing resonance to damage the battery pack 100. Setting the vibration frequency provided by the vibrator to 70Hz-150Hz can avoid the natural frequency of the battery pack 100 material and prevent it from overlapping or approaching the fixed frequency range of the outer shell 1 or the battery cell assembly 2 of the battery pack 100. At the same time, setting the vibration frequency provided by the vibrator to 70Hz-150Hz can also avoid the damage of the outer shell 1 or the battery cell assembly 2 of the battery pack 100 caused by low-frequency vibration. In actual operation, based on different battery packs 100, 30-40Hz can be added to the natural frequency of the battery pack 100, the battery cell assembly 2 or the battery cell unit 21 to obtain a specific value.

[0097] Optionally, the power of the vibrator may be less than or equal to 500 W. A low-power vibrator can provide high-frequency vibration without damaging the housing 1 or the cell assembly 2 of the battery pack 100, thereby ensuring structural integrity.

[0098] The preferred embodiments of the present disclosure are described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure, and these simple modifications all fall within the scope of protection of the present disclosure.

[0099] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. To avoid unnecessary repetition, the present disclosure will not further describe various possible combinations.

[0100] In addition, the various embodiments of the present disclosure may be arbitrarily combined, and as long as they do not violate the concept of the present disclosure, they should also be regarded as the contents disclosed by the present disclosure.

Claims

1. A battery pack, characterized in that: Including shell, battery core components and glue filling structure; The housing has a receiving cavity, and the battery core assembly and the glue potting structure are both arranged in the receiving cavity; The housing has a first end and a second end opposite to each other, the first end being provided with an exhaust hole communicating with the accommodating cavity; The exhaust hole is at least used to discharge the gas in the accommodating cavity to the outside of the battery pack when the battery pack is in a first state, wherein the battery pack has a first state, in which the battery pack is tilted and the first end is higher than the second end.

2. The battery pack according to claim 1, wherein: The exhaust hole is further used to discharge the gas in the accommodating cavity to the outside of the battery pack when the battery pack is in the second state; Wherein, in the second state, the battery pack is placed horizontally.

3. The battery pack according to claim 1, wherein: The housing includes a lower shell and an upper cover, wherein the upper cover covers the opening of the lower shell; The upper cover includes an upper cover body and an electrical cover, wherein the electrical cover is arranged at one end of the upper cover body and defines an electrical compartment for accommodating electric control components together with the upper cover body; Wherein, the exhaust hole is arranged on the upper cover body and is connected to the electrical compartment.

4. The battery pack according to any one of claims 1 to 3, characterized in that: The outer surface of the shell has a vibration contact surface, and the vibration contact surface is used to fit with the vibration surface of the vibration mechanism.

5. The battery pack according to claim 4, characterized in that: The housing comprises an upper cover, a bottom plate and side plates; The vibration contact surface is provided on at least one of the upper cover, the bottom plate, and the side plate.

6. The battery pack according to claim 5, characterized in that: The side plate includes two first side plates arranged opposite to each other along a first direction, and a first filling cavity is defined between the first side plates and the battery cell assembly; The glue pouring structure includes a first glue pouring portion, and the first glue pouring portion is arranged in the first filling cavity; Each of the first side plates is provided with the vibration contact surface.

7. The battery pack according to claim 5, characterized in that: The side plate includes two second side plates arranged opposite to each other along a second direction, and a second filling cavity is defined between the second side plates and the battery cell assembly; The glue pouring structure includes a second glue pouring portion, and the second glue pouring portion is arranged in the second filling cavity; The vibration contact surface is provided on each of the second side plates.

8. An electrical device, characterized in that: A battery pack comprising the battery pack according to any one of claims 1 to 7.

9. A rack structure for a battery pack, characterized in that: The battery pack is a battery pack according to any one of claims 1 to 7; The stand structure includes a driving mechanism, a base and a mounting platform, wherein the mounting platform is rotatably mounted on the base and is used to mount a battery pack; The driving mechanism is used to drive the mounting platform to rotate relative to the base, so that the battery pack has at least the first state.

10. The platform structure according to claim 9, characterized in that: In the first state, the angle between the plane where the bottom plate of the housing is located and the horizontal plane is 1°-5°.

11. The platform structure according to claim 9, characterized in that: The driving mechanism is used to drive the mounting platform to rotate relative to the base, so that the battery pack can continue to rotate from the first state to the second state; In the second state, the plane where the bottom plate of the housing is located is parallel to the horizontal plane; Moreover, the rotation speed of the mounting platform relative to the base is set so as to be able to start from the glue liquid state to the solidified state during the conversion process from the first state to the second state.

12. The platform structure according to claim 9, characterized in that: The platform structure also includes a power member and a plurality of fixed claws; The plurality of fixing claws are arranged on the mounting platform, and the fixing claws are used to be releasably connected to the battery pack; The power member is used to drive the fixed claw to move so as to engage with or release the battery pack.

13. The platform structure according to claim 9, characterized in that: The driving mechanism includes a rotary motor, the output end of which is in transmission connection with the mounting platform, and is used to drive the mounting platform to rotate relative to the base; The platform structure further includes a rotation angle controller, which is used to control the rotation angle parameters of the output end of the rotating motor.

14. The platform structure according to claim 9, characterized in that: The stand structure further includes a vibrator configured to contact an outer surface of the housing and vibrate the battery pack.

Images