Battery pack

Abstract

The embodiment of the invention provides a battery pack. The battery pack has a first direction, a second direction and a third direction which are mutually perpendicular in pairs, the battery pack comprises a battery management system and a bearing piece, the battery management system comprises a shell, the shell is hung on the bearing piece, a containing cavity is formed in the shell, the shell comprises a first part, a second part and an inclined part which are mutually connected, and the inclined part is arranged in the containing cavity; the first part extends in the first direction, the second part extends in the second direction, the first part and the second part define a bearing space used for avoiding a bearing piece, and the inclined part is arranged at the end, away from the second part, of the first part; the circuit board and the connector are arranged in the containing cavity, the circuit board is electrically connected with the connector, an opening is formed in the end, away from the first part, of the inclined part, and the opening is opposite to the connector. According to the battery management system provided by the embodiment of the invention, the space utilization rate and the energy density in the battery pack can be improved, and the condensation risk at the opening of the connector can also be reduced.

Description

Technical Field

[0001] This application belongs to the field of battery technology, specifically relating to a battery pack. Background Technology

[0002] As a core component installed in a battery pack, the Battery Management System (BMS) plays a role in monitoring battery status and protecting battery safety. Therefore, the installation method of the BMS in the battery pack is particularly important.

[0003] In existing technologies, the shape of the BMS is usually cuboid. Whether it is placed flat or vertically, a separate regular-shaped space needs to be set up inside the battery pack to place the BMS. In order to reliably fix the BMS, a separate fixing bracket is also needed to connect the BMS. This results in low space utilization inside the battery pack and correspondingly low energy density. Summary of the Invention

[0004] This application aims to provide a battery pack that solves the problem that existing BMS can easily lead to low energy density in battery packs.

[0005] To solve the above-mentioned technical problems, this application is implemented as follows:

[0006] In a first aspect, this application discloses a battery pack having a first direction, a second direction, and a third direction that are mutually perpendicular to each other. The battery pack includes a battery management system and a carrier. The battery management system includes:

[0007] A housing, which is mounted on the carrier, has a receiving cavity inside. The housing includes a first part, a second part, and an inclined portion that are connected to each other. The first part extends along a first direction, and the second part extends along a second direction. The first part and the second part enclose a bearing space for avoiding the carrier. The inclined portion is located at the end of the first part away from the second part and is inclined toward the bearing space.

[0008] A circuit board and a connector are disposed within the receiving cavity. The circuit board is electrically connected to the connector. An opening is provided at the end of the inclined portion away from the first part, and the opening is opposite to the connector.

[0009] Optionally, the circuit board is disposed within the second part;

[0010] The battery management system also includes a flexible electrical connector that is electrically connected between the circuit board and the connector.

[0011] Optionally, the flexible electrical connector includes at least one of a flexible circuit board and a wire.

[0012] Optionally, the housing is provided with a heat dissipation vent, which communicates with the receiving cavity;

[0013] The battery management system also includes a drying box containing a desiccant, which is disposed within the receiving cavity and opposite the heat dissipation vent.

[0014] Optionally, the drying box includes a first surface, which is parallel to the plane where the heat dissipation vent is located, and the first surface is provided with a plurality of air vents.

[0015] Optionally, the heat dissipation vent is located at the end of the second part that is furthest from the first part.

[0016] Optionally, the angle between the plane containing the inclined portion and the plane containing the first portion is an obtuse angle.

[0017] Optionally, the housing includes a first housing and a second housing, wherein the first housing and the second housing are detachably connected; wherein,

[0018] When the first housing and the second housing are connected, the first housing and the second housing enclose the cavity to form the receiving cavity.

[0019] Optionally, the battery management system further includes a drying box and multiple buffer components; wherein,

[0020] The drying box contains a desiccant and is disposed within the receiving cavity;

[0021] At least one of the buffer members is disposed between the drying box and the first housing, and at least another buffer member is disposed between the drying box and the second housing, with an interference fit between the drying box and the buffer member.

[0022] Optionally, the first part is provided with at least two mounting holes and at least one positioning hole, the carrier is provided with a positioning element, and the battery pack further includes fasteners; wherein,

[0023] The positioning element on the carrier is inserted through the positioning hole, and the fastener is inserted through the mounting hole.

[0024] In this embodiment, the battery pack may include a battery management system. The housing of the battery management system may include a first part and a second part connected to each other. The first part and the second part extend along a first direction and a second direction that are perpendicular to each other, respectively. Therefore, the first part and the second part can enclose a bearing space for avoiding the support member. In specific applications, the support member can be an existing expansion beam or other component in the battery pack. The housing can be flexibly shaped according to the structural characteristics of the support member to facilitate mounting the housing on the support member. In this way, not only can the space utilization rate within the battery pack be improved through the flexible layout of the first part and the second part, but it can also avoid the need to set up an additional separate fixing bracket to fix the operation of the battery management system, further improving the space utilization rate and energy density of the battery pack. Moreover, by placing the connector in the receiving cavity within the inclined portion and providing an opening opposite to the connector at the end of the inclined portion away from the first part, the risk of condensation on the connector at the opening can be greatly reduced.

[0025] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0026] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0027] Figure 1 This is a schematic diagram of the structure of a battery management system connected to a support member according to an embodiment of this application;

[0028] Figure 2 This is a schematic diagram of the structure of a battery management system according to an embodiment of this application;

[0029] Figure 3 yes Figure 2 The diagram shows the exploded structure of the battery management system.

[0030] Figure 4 yes Figure 2 The diagram shows the internal structure of the battery management system.

[0031] Figure 5 yes Figure 2 The diagram shows the structure of the drying box in the battery management system.

[0032] Reference numerals: 10 - bearing space, 11 - housing, 110 - receiving cavity, 111 - first part, 1111 - mounting hole, 1112 - positioning hole, 112 - second part, 113 - inclined part, 1131 - opening, 114 - heat dissipation vent, 115 - first housing, 1151 - slot, 116 - second housing, 1161 - snap fastener, 12 - circuit board, 13 - connector, 14 - flexible electrical connector, 15 - drying box, 151 - first surface, 1511 - vent, 16 - buffer, 2 - bearing, x - first direction, z - second direction, y - third direction. Detailed Implementation

[0033] Embodiments of the present invention will now be described in detail. Examples of these embodiments are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention. All other embodiments obtained by those skilled in the art based on the embodiments in this application without inventive effort are within the scope of protection of this application.

[0034] 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 invention, 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.

[0035] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0036] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0037] This application provides a Battery Management System (BMS) for intelligent management and maintenance of individual battery cells, monitoring battery status, preventing overcharging and over-discharging, and extending battery life. Specifically, the BMS may include a control module, a display module, a wireless communication module, a battery pack, and a data acquisition module for collecting battery information.

[0038] Reference Figures 1 to 4 This illustration shows a schematic diagram of the structure of a battery management system described in an embodiment of this application, such as... Figures 1 to 4 As shown, the battery pack has a first direction x, a second direction z, and a third direction y that are perpendicular to each other. The battery pack may include a battery management system and a carrier 2. The battery management system may specifically include a housing 11, which is mounted on the carrier 2. The housing 11 has a receiving cavity 110. The housing 11 includes a first part 111, a second part 112, and an inclined part 113 that are connected to each other. The first part 111 extends along the first direction x, and the second part 112 extends along the second direction z. The first part 111 and the second part 112 surround... The assembly forms a bearing space 10 for avoiding the bearing member 2. An inclined portion 113 is disposed at one end of the first portion 111 away from the second portion 112, and the inclined portion 113 is inclined toward the bearing space 10. A circuit board 12 and a connector 13 are disposed in the receiving cavity 110. The circuit board 12 and the connector 13 are electrically connected. The connector 13 is disposed in the inclined portion 113. An opening 1131 is provided at the end of the inclined portion 113 away from the first portion 111. The opening 1131 is opposite to the connector 13, and the connector 13 can be at least partially exposed through the opening 1131.

[0039] In this embodiment, the housing 11 of the battery management system may include a first part 111 and a second part 112 connected to each other. The first part 111 and the second part 112 extend along a first direction x and a second direction z that are perpendicular to each other, respectively. Therefore, the first part 111 and the second part 112 can enclose a bearing space 10 for avoiding the bearing member 2. In specific applications, the bearing member 2 can be a component such as an expansion beam already present in the battery pack. The housing 11 can be flexibly shaped according to the structural characteristics of the bearing member 2 to facilitate mounting the housing 11 on the bearing member 2. In this way, when the battery management system is applied to a battery pack, not only can the flexible layout of the first part 111 and the second part 112 improve the space utilization rate within the battery pack, but it can also avoid the need to set up a separate fixing bracket to fix the battery management system, further improving the space utilization rate and energy density of the battery pack. Furthermore, by placing the connector 13 in the receiving cavity 110 within the inclined portion 113 and providing an opening 1131 opposite to the connector 13 at one end of the inclined portion 113 away from the first portion 111, the risk of condensation on the connector 13 at the opening 1131 is greatly reduced.

[0040] It should be noted that the pairwise perpendicularity of the first direction x, the second direction z, and the third direction y can be understood as the angle between any two of these three directions being close to 90 degrees, not necessarily strictly perpendicular. For example, the angle between any two directions can be any value between 85 and 95 degrees.

[0041] For example, the first direction x can be the length direction of the battery management system, the second direction z can be the height direction of the battery management system, and the third direction y can be the thickness direction of the battery management system.

[0042] Specifically, when the battery management system is applied to a battery pack, the support member 2 can be a structural component of the battery pack itself. For example, the support member 2 can be an expansion beam, crossbeam, longitudinal beam, or side beam of the battery pack. This embodiment only uses an expansion beam as an example for illustration; other cases can be handled similarly.

[0043] In this embodiment, the circuit board 12 of the battery management system can be used to carry functional modules such as controllers and circuits. The connector 13 is electrically connected to the circuit board 12 and can be used to connect to the battery cells in the battery pack. The housing 11 can cover the circuit board 12 and the connector 13 to protect them. Since the housing 11 can include a first part 111 and a second part 112 that are perpendicular to each other, the first part 111 and the second part 112 can enclose a bearing space 10 for avoiding the bearing member 2.

[0044] like Figure 1 As shown, when the housing 11 is mounted on the support member 2, the first part 111 of the housing 11 can be located above the support member 2 along the second direction z, and the second part 112 can be located on the side of the support member 2 along the first direction x. Compared with the existing regular cuboid-shaped battery management system, the battery management system described in this application embodiment bends the first part 111 of the housing 11 relative to the second part 112 and suspends the first part 111 on the support member 2. On the one hand, the overall height of the housing 11 along the second direction z can be reduced, thereby avoiding the need to set up a large regular-shaped space in the battery pack to house the battery management system, and improving the space utilization rate in the battery pack. On the other hand, by mounting the housing 11 on the expansion beam and other components of the battery pack, it is also possible to avoid setting up an additional separate fixing bracket in the battery pack to fix the battery management system, further improving the space utilization rate and energy density of the battery pack.

[0045] In practical applications, to facilitate the connection between the connector 13 and the cells in the battery pack, the connector 13 needs to be at least partially exposed outside the housing 11 at the opening 1131. Therefore, external liquids such as water can easily enter the housing 11 through the opening 1131 of the connector 13, affecting the safety of the battery management system. In this embodiment, a downwardly sloping portion 113 is provided at the end of the first portion 111 away from the second portion 112. The connector 13 is placed inside the sloping portion 113, and the opening 1131 on the sloping portion 113 opposite to the connector 13 is tilted downwards. This facilitates the connection between the connector 13 and the cells, and also prevents external liquids such as water from entering the housing 11 along the opening 1131, reducing the risk of condensation on the connector 13 at the opening 1131 and improving the safety of the battery management system.

[0046] Optionally, the angle between the plane containing the inclined portion 113 and the plane containing the first portion 111 can be an obtuse angle. This allows the inclined portion 113 to tilt away from the bearing space 10, thereby avoiding interference between the inclined portion 113 and the bearing member 2 within the bearing space 10.

[0047] Preferably, the angle between the plane containing the inclined portion 113 and the plane containing the first portion 111 is 120°–155°, so as to control the inclination of the inclined portion 113 within a reasonable range. This ensures that the housing 11 can be reliably mounted on the support member 2, and also ensures that the inclination of the opening 1131 of the inclined portion 113 is reasonable. This not only facilitates the electrical connection between the connector 13 and the battery cells in the battery pack, but also prevents external water and impurities from entering the inclined portion 113 through the opening 1131.

[0048] For example, the angle between the plane of the inclined portion 113 and the plane of the first portion 111 can be 120°, 135°, 138°, 140°, 145°, or 155°, etc., and this application embodiment does not specifically limit this.

[0049] In some alternative embodiments of this application, such as Figure 3 and Figure 4 As shown, connector 13 is disposed within the first part 111, and circuit board 12 is disposed within the second part 112. The battery management system may further include a flexible electrical connector 14, which is electrically connected between circuit board 12 and connector 13. In specific applications, since connector 13 and circuit board 12 occupy a large space within housing 11, by disposing of connector 13 and circuit board 12 within the first part 111 and second part 112 respectively, the volumes of the first part 111 and second part 112 can be correspondingly smaller, which is beneficial for the flexible layout of circuit board 12 and connector 13.

[0050] It should be noted that those skilled in the art can also simultaneously set the first part 111 or the second part 112 of the circuit board 12 and the connector 13 according to actual needs. The embodiments of this application do not specifically limit the position of the circuit board 12 and the connector 13.

[0051] Optionally, the flexible electrical connector 14 may include at least one of a flexible circuit board and a conductor. In specific applications, the flexible circuit board has the advantage of stable transmission performance, while the conductor has the advantage of simple structure and low cost. Those skilled in the art can select at least one of the two as the flexible electrical connector 14 according to the actual situation. This application embodiment does not specifically limit the type of flexible electrical connector 14.

[0052] In other alternative embodiments of this application, such as Figure 2 As shown, the housing 11 is provided with a heat dissipation vent 114, which communicates with the receiving cavity 110. The receiving cavity 110 inside the housing 11 can exchange heat with the outside through the heat dissipation vent 114, thereby achieving heat dissipation. Figure 3 and Figure 4 As shown, the battery management system may further include a drying box 15, which contains a desiccant. The drying box 15 is disposed within the receiving cavity 110 and opposite the heat dissipation port 114. The desiccant in the drying box 15 can be used to adsorb water vapor in the gas entering and exiting from the heat dissipation port 114, so as to avoid condensation at the heat dissipation port 114 and achieve the effect of preventing condensation.

[0053] Reference Figure 5 The diagram shows a structural schematic of a drying box according to an embodiment of this application, as shown below. Figure 5 As shown, the drying box 15 has a first surface 151, which is parallel to the plane where the heat dissipation port 114 is located. The first surface 151 is provided with a plurality of vent holes 1511, which can be used for gas to pass through, so that hot air inside the housing 11 can be discharged to the outside of the housing 11 through the vent holes 1511, and at the same time, it can facilitate the input of cooler air outside the housing 11 into the housing 11 through the vent holes 1511 to achieve the effect of heat dissipation.

[0054] For example, the first surface 151 may have multiple vent holes 1511, which may be evenly distributed on the first surface 151. For example, the diameter of the vent holes 1511 may be between 0.8 mm and 1.2 mm, so that the vent holes 1511 can effectively promote the diffusion and absorption of moisture, ensuring that the desiccant in the drying box 15 can be in full contact with the moisture.

[0055] It should be noted that the first surface 151 of the drying box 15 includes a surface close to the heat dissipation port 114 and a surface away from the heat dissipation port 114. That is, there can be two first surfaces 151 on the drying box 15 so that air can pass through the two first surfaces 151 to realize the circulation between the inside and outside of the shell 11.

[0056] like Figure 3 As shown, the heat dissipation vent 114 is located at the end of the second part 112 away from the first part 111, so that the drying box 15 located at the heat dissipation vent 114 is located away from the connector 13, thereby further improving the anti-condensation effect of the drying box 15 on the heat dissipation vent 114.

[0057] It should be noted that, in practical applications, the heat dissipation vent 114 can also be set at other locations on the housing 11 as needed. For example, the heat dissipation vent 114 can be set on the side of the first part 111 or the second part 112 of the housing 11, etc. The embodiments of this application do not specifically limit the location of the heat dissipation vent 114.

[0058] Optionally, the desiccant is silica gel desiccant. As a moisture-absorbing material, silica gel desiccant's high porosity and high specific surface area enable it to quickly absorb large amounts of moisture, with a moisture absorption capacity far exceeding that of traditional moisture-absorbing materials. Furthermore, silica gel desiccant has the advantage of long-term effectiveness; it has a long service life and can continuously absorb moisture for several months or even longer under normal use conditions, significantly reducing the frequency of replacement. Therefore, using silica gel desiccant greatly enhances its ability to adsorb water vapor, further improving the anti-condensation effect of the drying box 15 on the heat dissipation vent 114, and also provides a longer service life.

[0059] like Figure 3As shown, the housing 11 may specifically include a first housing 115 and a second housing 116, which are detachably connected. When the first housing 115 and the second housing 116 are connected, they enclose a receiving cavity 110. In practical applications, because the first housing 115 and the second housing 116 are detachably connected, when the drying box 15 needs to be replaced, the connection between the first housing 115 and the second housing 116 can be disconnected to remove the old drying box 15 from the first housing 115 and place the new drying box 15 inside. Then, the first housing 115 and the second housing 116 can be reconnected.

[0060] like Figure 3 As shown, the first housing 115 is provided with a slot 1151, and the second housing 116 is provided with a buckle 1161 at a position corresponding to the slot 1151. By engaging the buckle 1161 with the slot 1151, a detachable connection can be achieved between the first housing 115 and the second housing 116.

[0061] It should be noted that in practical applications, the first housing 115 and the second housing 116 can also be detachably connected by other connection methods such as fasteners. This application embodiment does not specifically limit the detachable connection method between the first housing 115 and the second housing 116.

[0062] In some alternative embodiments of this application, such as Figure 3 As shown, the battery management system may further include a drying box 15 and multiple buffers 16. The drying box 15 contains a desiccant and is disposed within the receiving cavity 110. At least one buffer 16 is disposed between the drying box 15 and the first housing 115, and at least another buffer 16 is disposed between the drying box 15 and the second housing 116. The drying box 15 and the buffer 16 are interference-fitted to prevent the drying box 15 from shaking within the receiving cavity 110 and to improve the connection reliability of the drying box 15 within the housing 11.

[0063] For example, the material of the buffer 16 can be foam, silicone, or cotton felt, etc. This application embodiment does not specifically limit the material of the buffer 16. Moreover, in practical applications, the buffer 16 can also be disposed only between the drying box 15 and the first housing 115, or only between the drying box 15 and the second housing 116, or simultaneously between the drying box 15 and the first housing 115 and the second housing 116, as needed. This application embodiment does not specifically limit the placement of the buffer 16.

[0064] like Figure 2As shown, the first part 111 is provided with at least two mounting holes 1111 and at least one positioning hole 1112, the carrier 2 is provided with a positioning element, and the battery pack may also include fasteners; wherein, the positioning element on the carrier 2 passes through the positioning hole 1112, and the fastener passes through the mounting hole 1111 and the carrier 2.

[0065] For example, the positioning element can be a positioning post or a positioning pin, etc., to achieve reliable positioning of the housing 11 on the carrier 2. By connecting the first part 111 of the housing 11 to the carrier 2 using the fasteners, a reliable connection between the housing 11 and the carrier 2 can be achieved. In practical applications, to improve the reliability of the connection between the housing 11 and the carrier 2, the number of fasteners can be greater than or equal to three.

[0066] Optionally, the battery pack may further include: a housing and battery cells, with the carrier and battery cells both disposed within the housing, and the battery management system mounted on the carrier. The housing can be used to house and support the battery cells, and the carrier can be connected to the housing. For example, the carrier can be an expansion beam.

[0067] In practical applications, the expansion beam in a battery pack primarily serves to enhance the structural strength of the battery housing, improve battery safety and reliability, adapt to changes in battery volume, and increase cycle life and safety. The expansion beam design strengthens the battery housing's structure; through specialized structural designs, such as the tight integration of the front panel, rear panel, and liner, the battery housing maintains stable operation even under extreme conditions. Furthermore, the expansion beam adapts to changes in battery volume, absorbing and transmitting expansion forces to reduce the probability of housing deformation due to expansion, thereby improving battery safety and stability. Specifically, the expansion beam design typically includes a front panel, a rear panel, and a liner located within the housing cavity. These components fit tightly against the housing along its length, enhancing the overall structural strength. When a cell expands, the expansion beam abuts against the cell, using the deformation of the housing cavity to absorb and transmit the expansion force, thus reducing the risk of housing deformation due to expansion. This design not only improves battery pack safety but also extends its lifespan.

[0068] Typically, the battery management system is located close to the expansion beam inside the housing. Therefore, by connecting the battery management system to the expansion beam, it is convenient to connect the battery management system to the battery cells inside the housing.

[0069] Of course, the supporting component can also be a crossbeam, longitudinal beam, or side beam of the battery pack, etc. The embodiments of this application do not specifically limit the content of the supporting component.

[0070] Specifically, the process of installing the battery management system onto the carrier 2 may include: first, overlapping the first part 111 of the housing 11 onto the carrier 2, allowing the positioning element on the carrier 2 to pass through the positioning hole 1112, thereby positioning the housing 11 on the carrier 2. Then, fasteners are used to sequentially pass through the housing 11 and the carrier 2 to install the housing 11 onto the carrier 2. The fasteners may include, but are not limited to, bolts, screws, or studs.

[0071] It should be noted that the battery management system can also be connected to the carrier 2 by a buckle 1161 or a strap, etc. This application embodiment does not specifically limit the connection method of the battery management system on the carrier 2.

[0072] In summary, the battery management system described in this application embodiment may include at least the following advantages:

[0073] In this embodiment, the battery pack may include a battery management system. The housing of the battery management system may include a first part and a second part connected to each other. The first part and the second part extend along a first direction and a second direction that are perpendicular to each other, respectively. Therefore, the first part and the second part can enclose a bearing space for avoiding the support member. In specific applications, the support member can be an existing expansion beam or other component in the battery pack. The housing can be flexibly shaped according to the structural characteristics of the support member to facilitate mounting the housing on the support member. In this way, when the battery management system is applied to the battery pack, not only can the flexible layout of the first part and the second part improve the space utilization rate within the battery pack, but it can also avoid the need for additional fixed brackets to fix the battery management system, further improving the space utilization rate and energy density of the battery pack. Moreover, by setting the connector in the receiving cavity within the inclined portion and providing an opening opposite to the connector at one end of the inclined portion away from the first part, the risk of condensation on the connector at the opening is greatly reduced.

[0074] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0075] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A battery pack having a first direction (x), a second direction (z), and a third direction (y) that are mutually perpendicular, characterized in that, The battery pack includes a battery management system and a carrier (2), wherein the battery management system includes: A housing (11) is mounted on the support member (2). The housing (11) has a receiving cavity (110). The housing (11) includes a first part (111), a second part (112), and an inclined part (113) that are connected to each other. The first part (111) extends along the first direction (x), and the second part (112) extends along the second direction (z). The first part (111) and the second part (112) enclose a bearing space (10) for avoiding the support member (2). The inclined part (113) is disposed at one end of the first part (111) away from the second part (112). The inclined part (113) is inclined toward the bearing space (10). A circuit board (12) and a connector (13) are disposed in the receiving cavity (110). The circuit board (12) is electrically connected to the connector (13). The connector (13) is disposed in the inclined portion (113). An opening (1131) is provided at the end of the inclined portion (113) away from the first part (111). The opening (1131) is opposite to the connector (13).

2. The battery pack according to claim 1, characterized in that, The circuit board (12) is disposed within the second part (112); The battery management system further includes a flexible electrical connector (14) which is electrically connected between the circuit board (12) and the connector (13).

3. The battery pack according to claim 2, characterized in that, The flexible electrical connector (14) includes at least one of a flexible circuit board and a wire.

4. The battery pack according to claim 1, characterized in that, The housing (11) is provided with a heat dissipation port (114), which is connected to the receiving cavity (110); The battery management system also includes a drying box (15), which contains a desiccant and is located inside the receiving cavity (110) and opposite to the heat dissipation port (114).

5. The battery pack according to claim 4, characterized in that, The drying box (15) includes a first surface (151), which is parallel to the plane of the heat dissipation port (114), and the first surface (151) is provided with a plurality of vent holes (1511).

6. The battery pack according to claim 4, characterized in that, The heat dissipation vent (114) is located at the end of the second part (112) away from the first part (111).

7. The battery pack according to claim 1, characterized in that, The angle between the plane where the inclined part (113) is located and the plane where the first part (113) is located is an obtuse angle.

8. The battery pack according to claim 1, characterized in that, The housing (11) includes a first housing (115) and a second housing (116), wherein the first housing (115) and the second housing (116) are detachably connected; wherein, When the first housing (115) and the second housing (116) are connected, the first housing (115) and the second housing (116) enclose the receiving cavity (110).

9. The battery pack according to claim 8, characterized in that, The battery management system also includes a drying box (15) and multiple buffer components (16); wherein, The drying box (15) contains a desiccant and is disposed within the receiving cavity (110); At least one of the buffer members (16) is disposed between the drying box (15) and the first housing (115), and at least another buffer member (16) is disposed between the drying box (15) and the second housing (116), with an interference fit between the drying box (15) and the buffer member (16).

10. The battery pack according to claim 1, characterized in that, The first part (111) is provided with at least two mounting holes (1111) and at least one positioning hole (1112), the carrier is provided with a positioning element, and the battery pack further includes fasteners; wherein, The positioning element on the carrier (2) passes through the positioning hole (1112), and the fastener passes through the mounting hole (1111) and the carrier (2).

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