A battery pack

Abstract

The utility model discloses an embodiment provides a kind of battery pack, including explosion-proof valve assembly, explosion-proof valve assembly includes: explosion-proof valve, the explosion-proof valve includes connecting column and the valve body for pressure relief, the connecting column protrudes and is located in the side of the valve body;Anti-condensation structure, the anti-condensation structure includes moisture-absorbing piece, connecting seat and the storage shell with open side, the connecting seat is connected with the connecting column and the storage shell respectively, the connecting seat is capped in the open side of the storage shell and is enclosed with the storage shell and forms storage cavity, the storage shell is provided with the moisture-proof hole of the storage cavity, and the moisture-absorbing piece is located in the storage cavity.The safety of battery pack operation can be effectively guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of new energy technology, and in particular to a battery pack. Background Technology

[0002] Battery packs generate heat and water vapor during operation. When the ambient temperature is low or the humidity is high, condensation can easily form on the internal surfaces of the battery pack. Condensation leads to decreased insulation performance, accelerated corrosion, and an increased risk of short circuits, seriously threatening the lifespan and safety of the battery system. Furthermore, gases may be generated inside the battery pack due to chemical reactions or overcharging, requiring depressurization via explosion-proof valves.

[0003] Therefore, it is necessary to provide an assembly that achieves anti-condensation and explosion-proof functions to ensure the safety of battery pack operation. Utility Model Content

[0004] In view of the above problems, the present invention provides a battery pack that overcomes or at least partially solves the above problems.

[0005] To address the aforementioned problems, in a first aspect, this utility model discloses a battery pack, including an explosion-proof valve assembly, the explosion-proof valve assembly comprising: An explosion-proof valve, comprising a connecting column and a valve body for pressure relief, wherein the connecting column protrudes from one side of the valve body; The anti-condensation structure includes a moisture-absorbing component, a connecting seat, and a storage shell with an open side. The connecting seat is connected to the connecting post and the storage shell respectively. The connecting seat covers the open side of the storage shell and surrounds the storage shell to form a storage cavity. The storage shell is provided with a moisture-proof hole communicating with the storage cavity. The moisture-absorbing component is disposed inside the storage cavity.

[0006] Optionally, the storage shell is cylindrical in shape; The moisture-proof hole is formed on the circumference of the storage shell, and / or the moisture-proof hole is formed on the bottom of the storage shell opposite to the connecting seat.

[0007] Optionally, the connecting seat includes a seat body and a connecting rod, the seat body being sealed to the open side of the storage shell; The connecting rod is connected to the side of the base away from the storage shell, and the connecting rod is detachably connected to the connecting post.

[0008] Optionally, the connecting column is provided with a threaded groove, and the outer periphery of the connecting rod is provided with a threaded structure, the threaded structure being threadedly connected to the threaded groove.

[0009] Optionally, the connecting rod is connected to the middle position of the base.

[0010] Optionally, the connector and the storage housing are detachably connected.

[0011] Optionally, the valve body includes an elastic element, a valve seat, and a valve cover, wherein the valve seat is disposed between the valve cover and the connecting post, and the valve seat is connected to the connecting post; The valve seat is provided with a vent hole, and the vent hole is spaced apart from the connecting column. The valve cover is disposed opposite to the vent hole, and the valve cover is connected to the valve seat through the elastic element. The valve cover is used to open or block the vent hole.

[0012] Optionally, the valve seat further includes side wings, with side wings provided on opposite sides of the valve seat, and mounting holes provided on the side wings for inserting fasteners.

[0013] Optionally, the battery pack further includes a housing, a cover, and a battery pack, wherein the housing has an open side; The cover seals the open side of the box and forms a receiving cavity with the box; The battery pack and the anti-condensation structure are disposed within the receiving cavity; At least a portion of the connecting column is disposed within the receiving cavity, and at least a portion of the valve body is disposed outside the receiving cavity and connected to the housing.

[0014] Optionally, the battery pack further includes a battery pack power distribution unit and a battery management system, and the housing includes side panels; Both the power distribution unit and the battery management system are housed within the receiving cavity; The power distribution unit and / or the battery management system are disposed between the side panel and the battery pack; The valve body is connected to the side plate.

[0015] The embodiments of this utility model have the following advantages: In this embodiment of the utility model, the connecting seat is connected to the connecting column, so that the explosion-proof valve and the anti-condensation structure can be integrated into one unit. The explosion-proof valve assembly can integrate the explosion-proof valve and the anti-condensation structure. That is, it can achieve the explosion-proof function by depressurizing through the valve body, and it can also achieve the anti-condensation function by absorbing water vapor through the moisture-absorbing element, thereby effectively ensuring the safety of the battery pack operation. Attached Figure Description

[0016] Figure 1 This is a schematic diagram showing the disassembled structure of an explosion-proof valve assembly according to this utility model; Figure 2 This is an exploded view of an anti-condensation structure of this utility model; Figure 3 This is a structural schematic diagram of an explosion-proof device of this utility model in a certain direction; Figure 4 This is a schematic diagram of the structure of a battery pack according to this utility model; Figure 5 This is a utility model Figure 4 A magnified structural diagram of point A in the middle.

[0017] Explanation of reference numerals in the attached figures: 1. Explosion-proof valve assembly; 11. Explosion-proof valve; 111. Connecting column; 1111. Threaded groove; 112. Valve body; 1122. Valve seat; 11221. Vent hole; 1123. Side wing; 11231. Mounting hole; 1124. Valve cover; 12. Anti-condensation structure; 121. Moisture-absorbing component; 122. Connecting seat; 1221. Seat body; 1222. Connecting rod; 12221. Threaded structure; 123. Storage shell; 1231. Moisture-proof hole; 124. Storage cavity; 2. Box body; 21. Side plate; 211. Assembly hole; 3. Cover; 4. Battery pack; 5. Battery pack power distribution unit; 6. Battery management system; 7. Fasteners. Detailed Implementation

[0018] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0019] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0020] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0022] One of the core concepts of this utility model embodiment lies in disclosing a battery pack, including an explosion-proof valve assembly 1, such as... Figure 1 As shown, the explosion-proof valve assembly 1 may include an explosion-proof valve 11, which may include a connecting column 111 and a valve body 112 for pressure relief. The connecting column 111 protrudes from one side of the valve body 112. The anti-condensation structure 12 includes a moisture-absorbing element 121, a connecting seat 122, and a storage shell 123 with an open side. The connecting seat 122 is connected to the connecting column 111 and the storage shell 123 respectively. The connecting seat 122 covers the open side of the storage shell 123 and surrounds the storage shell 123 to form a storage cavity 124. The storage shell 123 is provided with a moisture-proof hole 1231 communicating with the storage cavity 124. The moisture-absorbing element 121 is disposed inside the storage cavity 124.

[0023] In this embodiment of the utility model, the connecting seat 122 is connected to the connecting column 111, so that the explosion-proof valve 11 and the anti-condensation structure 12 can be integrated into one unit. The explosion-proof valve assembly 1 can integrate the explosion-proof valve 11 and the anti-condensation structure 12. That is, the valve body 112 can be used to release pressure and realize the explosion-proof function, and the moisture-absorbing element 121 can be used to absorb water vapor and realize the anti-condensation function, thereby effectively ensuring the safety of the battery pack operation.

[0024] In this embodiment of the utility model, the explosion-proof valve assembly 1 can integrate the explosion-proof valve 11 and the anti-condensation structure 12 into one unit, which is beneficial to simplify the structure and achieve structural optimization. Moreover, compared with the separate design of the explosion-proof valve 11 and the anti-condensation structure 1, the explosion-proof valve assembly 1 has a compact structure, which can reduce the space occupied inside the battery pack. At the same time, the integrated design reduces redundant structures, reduces weight burden, achieves lightweighting, and helps to improve the energy density of the battery pack.

[0025] Specifically, the battery pack described in this embodiment of the present invention can be applied to battery fields such as new energy vehicle battery packs, energy storage battery systems, and electric marine power battery boxes.

[0026] Specifically, during the charging and discharging process, gas may be generated due to internal chemical reactions and various factors, which may cause the internal pressure of the battery pack to rise. When the pressure reaches a certain level, the explosion-proof valve 11 will automatically open to discharge the excess gas, thereby releasing the internal pressure of the battery pack and preventing the battery pack from rupturing or even exploding due to excessive internal pressure.

[0027] Specifically, the explosion-proof valve 11 usually has a special structural design that can prevent external open flames or sparks from entering the battery pack, thus playing a role in isolation and protection and reducing the risk of the battery pack burning or exploding.

[0028] Specifically, when the battery pack's operating environment changes, such as changes in temperature or altitude, it can cause an imbalance in air pressure inside and outside the battery pack. The explosion-proof valve 11 can regulate the pressure difference between the inside and outside to a certain extent, preventing damage to the battery pack due to the pressure imbalance and ensuring the performance and safety of the battery pack.

[0029] Specifically, the battery pack generates heat and water vapor during operation. It contains numerous electrical components such as battery cells, circuit boards, busbars, and connectors. When the ambient temperature is low or humidity is high, water vapor in the air may condense into water droplets on low-temperature surfaces, easily forming condensation on the internal surfaces of the battery pack. If this condensation drips onto the surface of the battery cells or electrical connections, it may cause corrosion of the cell casing, short circuits between the positive and negative electrodes, and even the risk of thermal runaway. If condensation forms on circuit boards or sensors, it may cause short circuits, signal interference, or component failure, affecting the normal operation of the battery management system (BMS). In this embodiment, by incorporating an anti-condensation structure 12, short circuits caused by condensation can be prevented, thereby ensuring the safety, stability, and lifespan of the battery pack.

[0030] Specifically, the explosion-proof valve 11 includes a connecting column 111 and a valve body 112. The valve body 112 serves as the main structure of the explosion-proof valve 11 and is used to realize the function of pressure relief. The connecting column 111 protrudes from one side of the valve body 112 and can serve as a connecting part of the explosion-proof valve 11 to realize the assembly with the anti-condensation structure 12.

[0031] Specifically, the anti-condensation structure 12 includes a moisture-absorbing element 121, a connecting seat 122, and a storage shell 123. The moisture-absorbing element 121 can be made of moisture-absorbing material and has the function of absorbing condensation, so that the explosion-proof valve assembly 1 can achieve efficient moisture absorption and anti-condensation performance. The storage shell 123 can be made of corrosion-resistant material. The storage shell 123 is hollow inside and has an open side. By connecting the connecting seat 122 to the storage shell 123, the connecting seat 122 blocks the open side of the storage shell 123. The connecting seat 122 and the storage shell 123 can enclose and form a storage cavity 124. By storing the moisture-absorbing element 121 in the storage cavity 124, the reliability of the arrangement of the moisture-absorbing element 121 can be improved. Moreover, the connecting seat 122 can also be used as a connector of the anti-condensation structure 12. By connecting the connecting seat 122 to the connecting post 111, the anti-condensation structure 12 and the explosion-proof valve 11 can be assembled, thereby realizing the integration of the anti-condensation structure 12 and the explosion-proof valve 11, which simplifies the structure of the explosion-proof valve assembly 1.

[0032] In this embodiment of the utility model, the explosion-proof valve assembly 1 can integrate the anti-condensation structure 12 and the explosion-proof valve 11. The structure is simple, which can reduce the space occupied and avoid affecting the energy density of the battery pack and the overall design layout.

[0033] Furthermore, a moisture-proof hole 1231 is formed on the storage shell 123, connecting to the storage cavity 124, so that condensation can enter the storage cavity 124 through the moisture-proof hole 1231 and be absorbed by the moisture-absorbing element 121. The opening size of the moisture-proof hole 1231 can be designed to be smaller than the size of the moisture-absorbing element 121, which can ensure effective absorption of moisture while preventing the moisture-absorbing element 121 from being exposed. For example, the size of the moisture-proof hole 1231 can be 0.8mm, 0.9mm, 1mm, 1.2mm, etc.

[0034] Specifically, there are several moisture-proof holes 1231, and the shape of the moisture-proof holes 1231 can be round, square, or elliptical, etc. In this embodiment of the utility model, the number, shape, size, and density of the moisture-proof holes 1231 are not specifically limited.

[0035] Specifically, the moisture-absorbing component 121 can be made of silica gel material with high porosity and high moisture absorption performance. It can continuously absorb moisture in high humidity environments. Its high porosity and high specific surface area characteristics enable it to quickly absorb a large amount of moisture, which helps the explosion-proof valve assembly 1 achieve high moisture absorption capacity. By continuously absorbing moisture inside the battery pack through the moisture-absorbing component 121, condensation of water vapor on the inner wall of the housing 2 or the surface of the battery cells is effectively prevented, avoiding battery short circuits or corrosion problems caused by condensation. Among them, silica gel desiccant has a long service life and can continuously absorb moisture for several months or even longer under normal use conditions, significantly reducing the replacement frequency and enabling the moisture-absorbing component 121 to achieve long-term effectiveness.

[0036] In some alternative embodiments, the storage casing 123 is cylindrical in shape. For example, the cross-section of the storage casing 123 perpendicular to its length direction can be circular, elliptical, or polygonal, etc., which makes the structure of the storage casing 123 more diverse.

[0037] Furthermore, the moisture-proof hole 1231 is opened in the circumferential direction of the storage shell 123, and / or, the moisture-proof hole 1231 is opened at the bottom of the storage shell 123 away from the connector 122.

[0038] In this embodiment of the utility model, the moisture-proof hole 1231 can be opened in the circumference of the storage shell 123 or in the bottom of the storage shell 123 away from the connecting seat 122, so that the moisture-proof hole 1231 can be arranged in various ways in the storage shell 123, which makes it easy to adjust the effect of the moisture-absorbing element 121 on condensation absorption. Moreover, the fact that the moisture-proof hole 1231 is located in the bottom of the storage shell 123 away from the connecting seat 122 and in the circumference of the storage shell 123 is conducive to achieving uniform moisture absorption.

[0039] Specifically, the moisture-proof hole 1231 is opened in the circumferential direction of the storage shell 123, so that the moisture-absorbing element 121 can absorb condensation from the circumferential direction of the storage shell 123; the moisture-proof hole 1231 is opened at the bottom of the storage shell 123 away from the connecting seat 122, so that the moisture-absorbing element 121 can absorb condensation from the bottom of the storage shell 123 away from the connecting seat 122.

[0040] Specifically, a number of moisture-proof holes 1231 can be evenly arranged on the bottom of the storage shell 123 away from the connecting seat 122, or a number of moisture-proof holes 1231 can be evenly arranged on the circumferential side of the back of the storage shell 123; or a number of moisture-proof holes 1231 can be evenly arranged on the bottom of the storage shell 123 away from the connecting seat 122, and at the same time, a number of moisture-proof holes 1231 can be evenly arranged on the circumferential side of the back of the storage shell 123, which can effectively promote the diffusion and absorption of moisture and ensure that the moisture-absorbing component 121 is in full contact with the moisture.

[0041] In some alternative embodiments, the connecting seat 122 includes a seat body 1221 and a connecting rod 1222. The seat body 1221 covers the open side of the storage shell 123. The connecting rod 1222 is connected to the side of the seat body 1221 away from the storage shell 123. The connecting rod 1222 is detachably connected to the connecting post 111.

[0042] In this embodiment of the invention, the connecting seat 122 can be fitted with the storage shell 123 through the seat body 1221 to form a storage cavity 124, and can be connected to the connecting post 111 through the connecting rod 1222 to achieve assembly with the explosion-proof valve 11. Moreover, the connecting rod 1222 and the connecting post 111 are detachably connected, making the explosion-proof valve 11 and the anti-condensation structure 12 detachable. In the later maintenance stage, the explosion-proof valve 11 or the anti-condensation structure 12 can be replaced separately, which helps to reduce costs.

[0043] Specifically, the side of the base 1221 facing away from the connecting rod 1222 can be adapted to the open side structure of the storage shell 123 so that the base 1221 can cover the open side of the storage shell 123. The base 1221 and the open side of the storage shell 123 can be fixedly connected or detachably bolted connected.

[0044] In some alternative embodiments, the connecting rod 1222 and the connecting post 111 can be connected by a snap-fit ​​mechanism to facilitate a detachable connection. In other embodiments, the connecting rod 1222 and the connecting post 111 can also be connected by bolts to facilitate a detachable connection. Optionally, the connecting column 111 is provided with a threaded groove 1111, and the outer periphery of the connecting rod 1222 is provided with a threaded structure 12221, which is threadedly connected to the threaded groove 1111.

[0045] In this embodiment of the utility model, the threaded structure 12221 and the threaded groove 1111 cooperate to realize the threaded connection between the connecting rod 1222 and the connecting column 111, which facilitates the disassembly and assembly of the anti-condensation structure 12 and the explosion-proof valve 11, and the structure has good stability.

[0046] In this embodiment of the utility model, the anti-condensation structure 12 and the explosion-proof valve 11 are connected by a threaded connection, which not only ensures a tight fit between the two, but also avoids the problem of loosening caused by vibration or impact, and realizes the integration of anti-condensation function and explosion-proof function.

[0047] In some embodiments, the threaded connection between the connecting rod 1222 and the connecting post 111 can also be achieved by opening a threaded groove 1111 on the connecting rod 1222 and providing a threaded structure 12221 on the outer periphery of the connecting post 111.

[0048] In some optional embodiments of this utility model, the connecting rod 1222 is connected to the middle position of the seat 1221, so that the seat 1221 can be connected to the connecting column 111 through the middle position. The seat 1221 is subjected to more balanced force, which is conducive to ensuring the reliability and stability of the connection between the anti-condensation structure 12 and the explosion-proof valve 11.

[0049] Specifically, the middle position of the seat 1221 refers to the geometric center area of ​​the seat 1221 along the length and width directions, that is, the center area of ​​the side surface of the seat 1221 facing the connecting rod 1222. This ensures that the load transmitted to the seat 1221 by the connecting column 111 and the connecting rod 1222 is evenly distributed on both sides of the seat 1221, which can avoid stress concentration on one side of the seat 1221, resulting in deformation or wear.

[0050] In some alternative embodiments, the connector 122 and the storage housing 123 are detachably connected.

[0051] In this embodiment of the invention, the connecting seat 122 and the storage shell 123 are detachably connected, so that the storage cavity 124 can be opened to facilitate the replacement of the moisture-absorbing component 121 and to meet the needs of long-term use of the battery pack.

[0052] Specifically, since the connector 122 and the storage shell 123 are detachably connected, the moisture-absorbing component 121 can be replaced regularly and in a timely manner to avoid the moisture-absorbing component 121 becoming saturated and affecting the moisture-absorbing capacity after long-term use, thus meeting the needs of long-term operation.

[0053] Specifically, the connector 122 and the storage shell 123 can be connected by snap-fit ​​or bolt, so as to achieve a detachable connection between the connector 122 and the storage shell 123. Moreover, the snap-fit ​​and bolt connection methods also facilitate the disassembly of the connector 122 and the storage shell 123. The operation is simple and time-saving, and can achieve rapid maintenance.

[0054] Specifically, in combination Figure 1 and Figure 2 As shown, the end of the storage shell 123 facing the connecting seat 122 may be provided with an external thread structure 12221, and the end of the connecting seat 122 facing the storage shell 123 may be provided with an internal thread structure 12221, so that the storage shell 123 and the connecting seat 122 are threadedly connected. The reverse is also possible; however, this embodiment of the present invention does not impose a specific limitation. Furthermore, to ensure the reliability of the threaded connection between the storage shell 123 and the connecting seat 122, the height of the external thread structure 12221 on the storage shell 123 can be controlled to 3.8mm, 4mm, 4.1mm, or 4.2mm, etc.

[0055] The explosion-proof valve assembly 1 in this embodiment of the present invention, through optimized design, can achieve the goals of efficient moisture absorption, convenient maintenance and space saving.

[0056] Optionally, the valve body 112 includes an elastic element, a valve seat 1122, and a valve cover 1124. The valve seat 1122 is disposed between the valve cover 1124 and the connecting post 111, and the valve seat 1122 is connected to the connecting post 111. The valve seat 1122 is provided with a vent hole 11221, which is spaced apart from the connecting post 111. The valve cover 1124 is disposed opposite to the vent hole 11221, and the valve cover 1124 is connected to the valve seat 1122 through the elastic element. The valve cover 1124 is used to open or block the vent hole 11221.

[0057] In this embodiment of the invention, the valve seat 1122 is disposed between the valve cover 1124 and the connecting post 111. Thus, when the explosion-proof valve assembly 1 is installed into the battery pack, the valve seat 1122 and the connecting post 111 can be installed inside the battery pack. When the valve cover 1124 is opened, the internal air pressure of the battery pack can be released through the vent hole 11221, achieving a pressure relief function. Furthermore, the moisture-absorbing component 121 can be placed inside the battery pack to absorb condensation and prevent short circuits and other malfunctions. The vent hole 11221 and the connecting post 111 are spaced apart to prevent the connecting post 111 from interfering with gas leakage through the vent hole 11221.

[0058] Specifically, the elastic element can be stretched or contracted, and the elastic element can be a tension spring or a contraction spring. The number of elastic elements can be at least two, and the at least two elastic elements can be arranged at intervals along the circumference of the valve cover 1124 to ensure the uniformity of force on the valve cover 1124 and improve the reliability of opening or closing the valve cover 1124.

[0059] Specifically, when the air pressure inside the battery pack exceeds a preset value, the gas compresses the valve cover 1124, the elastic element stretches, the valve cover 1124 opens, and the gas inside the battery pack leaks out through the vent 11221; when the air pressure inside the battery pack does not exceed the preset value, the elastic element compresses and applies a pulling force to the valve cover 1124, so that the valve cover 1124 can fit tightly with the valve seat 1122 to block the vent 11221.

[0060] Specifically, there can be several vent holes 11221, which can be arranged circumferentially around the connecting post 111. Alternatively, several vent holes 11221 can be opened on opposite sides of the connecting post 111.

[0061] Specifically, the shape of the vent 11221 can be circular, elliptical, or polygonal, or it can be an irregular shape, etc.

[0062] In some alternative embodiments, the valve seat 1122 may include a seat ring and several reinforcing ribs. The seat ring may be an annular structure and sleeved on the outside of the connecting post 111. The several reinforcing ribs may be arranged around the circumference of the connecting post 111 and disposed inside the seat ring. One end of each reinforcing rib is connected to the outer circumference of the connecting post 111, and the other end is connected to the inner circumference of the seat ring. A vent hole 11221 is formed between two adjacent reinforcing ribs.

[0063] Specifically, the valve cover 1124 can be a flat plate structure, or the valve cover 1124 can be a stepped plate structure, that is, it presents a stepped change along its thickness direction, and the height, width or thickness of different steps can be designed according to functional requirements.

[0064] In other embodiments, the valve body 112 may also be designed with other spring loading to automatically open and release pressure when the internal pressure of the battery pack exceeds a set value, so as to prevent the battery pack from rupturing or exploding due to excessive pressure. This utility model does not make specific limitations in this regard.

[0065] Optionally, such as Figure 3 As shown, the valve seat 1122 also includes a side wing 1123. The valve seat 1122 is provided with side wings 1123 on both sides. The side wings 1123 are provided with mounting holes 11231 for fasteners 7 to pass through.

[0066] In this embodiment of the utility model, by opening mounting holes 11231 on the side wing 1123, it is convenient to use fasteners 7 to fix the valve seat 1122 to the battery pack housing 2, thereby realizing the assembly of the explosion-proof valve assembly 1 to the battery pack.

[0067] Specifically, the shape of the side wing 1123 is not limited in this embodiment of the present invention, and can be designed according to actual needs.

[0068] In this embodiment of the invention, a modular design is adopted, in which the anti-condensation structure 12 and the explosion-proof valve 11 are connected by threads to form an independent functional unit. When the moisture-absorbing component 121 needs to be replaced, only the anti-condensation structure 12 and the explosion-proof valve 11 need to be disassembled, and the anti-condensation structure 12 can be maintained directly. This design avoids the cumbersome disassembly process caused by the complexity of the structure in traditional designs, and significantly simplifies the maintenance process.

[0069] The anti-condensation structure 12 is connected to the explosion-proof valve 11 via threads. Disassembly is simple: just unscrew the threaded cap on the connector 122 to separate the anti-condensation structure 12. After replacing the moisture-absorbing component 121, reassembly is also straightforward: simply tighten the anti-condensation structure 12 to the explosion-proof valve 11 to complete the connection. The entire process is simple, quick, and suitable for rapid completion during routine maintenance.

[0070] Since it eliminates the need to disassemble numerous parts, the workload for maintenance personnel is significantly reduced, decreasing the time and labor costs required for maintenance. Simultaneously, the modular design avoids damage that may result from frequent disassembly and reassembly, extending the service life of the explosion-proof valve assembly 1.

[0071] Optionally, the battery pack also includes a housing 2, a cover 3, and a battery pack 4. The housing 2 has an open side; the cover 3 covers the open side of the housing 2 and encloses the housing 2 to form a receiving cavity; the battery pack 4 and the anti-condensation structure 12 are disposed in the receiving cavity; at least a portion of the connecting post 111 of the explosion-proof valve 11 is disposed in the receiving cavity, and at least a portion of the valve body 112 of the explosion-proof valve 11 is disposed outside the receiving cavity and connected to the housing 2.

[0072] In this embodiment of the invention, the anti-condensation structure 12 is disposed within the receiving cavity to facilitate the absorption of condensation within the receiving cavity, thereby ensuring the electrical safety of the battery pack. The valve body 112 is at least partially disposed outside the receiving cavity and connected to the housing 2, facilitating the assembly of the valve body 112 and the housing 2, and also facilitating the depressurization of the battery pack interior by the explosion-proof valve 11.

[0073] Specifically, the housing 2 can be spliced ​​and fixed to the cover 3, which can be a fixed connection or a snap-fit ​​connection, etc. Specifically, the housing 2 can include a circumferential side plate and a bottom plate, with the bottom plate and the cover 3 arranged opposite to each other. The two ends of the circumferential side plate are respectively connected to the cover 3 and the bottom plate to form the receiving cavity.

[0074] Furthermore, the circumferential side plate can be integrally formed with the cover 3, or the circumferential side plate can be integrally formed with the bottom plate. This embodiment of the present invention does not specifically limit this.

[0075] Optionally, the battery pack also includes a battery distribution unit (BDU) 5 and a battery management system (BMS), and the housing 2 includes a side plate 21; the distribution unit and the battery management system are both located in the receiving cavity; the distribution unit and / or the battery management system are located between the side plate 21 and the battery pack 4; the valve body 112 is connected to the side plate 21.

[0076] In this embodiment of the utility model, the power distribution unit and / or battery management system is disposed between the side plate 21 and the battery pack 4; the valve body 112 is connected to the side plate 21, so that the explosion-proof valve assembly 1 is disposed close to the power distribution unit and / or battery management system. Since the location of the power distribution unit and / or battery management system is prone to generate large air pressure, it is convenient to use the explosion-proof valve 11 to release pressure in the high-pressure area, so as to ensure the safety of the battery pack.

[0077] Specifically, the fastener 7 can be a fastening bolt. In this embodiment of the invention, the explosion-proof valve assembly 1 integrates the explosion-proof valve 11 and the anti-condensation structure 12, and is fixed to the housing 2 by fastening bolts, which ensures the stability of the explosion-proof valve assembly 1 and facilitates disassembly and maintenance. Figure 4 and Figure 5 As shown, the side plate 21 has an assembly hole 211 for fasteners to pass through, and the assembly hole 211 may also have a threaded structure.

[0078] Specifically, such as Figure 4 and Figure 5As shown, the battery pack has width, length, and thickness directions, which are arranged along the X, Y, and Z directions, respectively. After the connecting column 111 and the connecting rod 1222 are threaded together, the explosion-proof valve 11 and the anti-condensation structure 12 are integrated. Then, the valve seat 1122 is threadedly connected to the side plate 21 by using bolts to fix the explosion-proof valve assembly 1 to the housing 2.

[0079] The battery pack described in this embodiment of the present invention has the following advantages: In this embodiment of the utility model, the connecting seat is connected to the connecting column, so that the explosion-proof valve and the anti-condensation structure can be integrated into one unit. The explosion-proof valve assembly can integrate the explosion-proof valve and the anti-condensation structure. That is, it can achieve the explosion-proof function by depressurizing through the valve body, and it can also achieve the anti-condensation function by absorbing water vapor through the moisture-absorbing element, thereby effectively ensuring the safety of the battery pack operation.

[0080] In another aspect, this utility model embodiment may also disclose an electrical device, which may include the battery pack described above. This electrical device can achieve the same beneficial effects as the battery pack described above, and will not be described in detail here.

[0081] Specifically, the electrical equipment described in this utility model embodiment includes, but is not limited to, new energy vehicles, energy storage systems, consumer electronics, industrial equipment, aerospace and other fields.

[0082] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the present invention.

[0083] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0084] The present invention provides a detailed description of a battery pack. Specific examples have been used to illustrate the principle and implementation of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. A battery pack, characterized in that, Includes an explosion-proof valve assembly (1), said explosion-proof valve assembly (1) comprising: An explosion-proof valve (11) includes a connecting column (111) and a valve body (112) for pressure relief, wherein the connecting column (111) protrudes from one side of the valve body (112); The anti-condensation structure (12) includes a moisture-absorbing element (121), a connecting seat (122), and a storage shell (123) with an open side. The connecting seat (122) is connected to the connecting post (111) and the storage shell (123) respectively. The connecting seat (122) covers the open side of the storage shell (123) and surrounds the storage shell (123) to form a storage cavity (124). The storage shell (123) is provided with a moisture-proof hole (1231) communicating with the storage cavity (124). The moisture-absorbing element (121) is located inside the storage cavity (124).

2. The battery pack according to claim 1, characterized in that, The storage shell (123) is cylindrical in shape; The moisture-proof hole (1231) is opened in the circumferential direction of the storage shell (123), and / or, the moisture-proof hole (1231) is opened at the bottom of the storage shell (123) away from the connecting seat (122).

3. The battery pack according to claim 1, characterized in that, The connecting seat (122) includes a seat body (1221) and a connecting rod (1222), wherein the seat body (1221) is sealed to the open side of the storage shell (123); The connecting rod (1222) is connected to the side of the base (1221) away from the storage shell (123), and the connecting rod (1222) is detachably connected to the connecting post (111).

4. The battery pack according to claim 3, characterized in that, The connecting column (111) is provided with a threaded groove (1111), and the outer periphery of the connecting rod (1222) is provided with a threaded structure (12221), which is threadedly connected to the threaded groove (1111).

5. The battery pack according to claim 3, characterized in that, The connecting rod (1222) is connected to the middle position of the base (1221).

6. The battery pack according to claim 1, characterized in that, The connector (122) and the storage shell (123) are detachably connected.

7. The battery pack according to claim 1, characterized in that, The valve body (112) includes an elastic element, a valve seat (1122) and a valve cover (1124). The valve seat (1122) is disposed between the valve cover (1124) and the connecting post (111), and the valve seat (1122) is connected to the connecting post (111). The valve seat (1122) is provided with a vent hole (11221), and the vent hole (11221) is spaced apart from the connecting column (111); The valve cover (1124) is disposed opposite to the vent (11221), and the valve cover (1124) is connected to the valve seat (1122) through the elastic element. The valve cover (1124) is used to open or block the vent (11221).

8. The battery pack according to claim 7, characterized in that, The valve seat (1122) also includes a side wing (1123), and the side wing (1123) is provided on both sides of the valve seat (1122). The side wing (1123) is provided with a mounting hole (11231), and the mounting hole (11231) is used to insert a fastener (7).

9. The battery pack according to any one of claims 1-8, characterized in that, The battery pack also includes a housing (2), a cover (3), and a battery pack (4), wherein the housing (2) has an open side; The cover (3) covers the open side of the box (2) and forms a receiving cavity with the box (2); The battery pack (4) and the anti-condensation structure (12) are disposed within the receiving cavity; At least a portion of the connecting column (111) is disposed within the receiving cavity, and at least a portion of the valve body (112) is disposed outside the receiving cavity and connected to the housing (2).

10. The battery pack according to claim 9, characterized in that, The battery pack also includes a battery pack power distribution unit (5) and a battery management system (6), and the housing (2) includes a side panel (21). The power distribution unit (5) and the battery management system (6) are both located within the receiving cavity; The power distribution unit (5) and / or the battery management system (6) are disposed between the side plate (21) and the battery pack (4); The valve body (112) is connected to the side plate (21).

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