Housing mechanism and battery pack

Abstract

The application provides a shell mechanism and a battery pack. The shell mechanism comprises a box body and a pole structure; the box body has a receiving cavity; the pole structure comprises a conductive sheet, a first conductive column and a second conductive column; the conductive sheet is arranged on the box body; the conductive sheet comprises a first subpart and a second subpart connected with each other; the first subpart is connected with the first conductive column and located in the receiving cavity; the second subpart is connected with the second conductive column and located outside the receiving cavity; and in the thickness direction of the shell mechanism, the orthographic projection of the pole structure is located in the orthographic projection of the box body. Since the pole structure is arranged on the box body, the height of the pole structure in the thickness direction of the shell mechanism can be effectively reduced, that is, the height of the pole structure protruding from the box body is reduced, the overall thickness of the shell mechanism is controlled, the side edge of the pole structure does not exceed the side edge of the box body, and finally the risk of interference between the battery pack and other structures in the external environment is reduced.

Description

Technical Field

[0001] This application relates to the field of battery manufacturing technology, specifically to a housing mechanism and a battery pack. Background Technology

[0002] In related technologies, a battery pack includes a housing, battery modules, and a cover. The battery modules are housed within the housing, and the cover encloses the battery modules within the housing. To electrically connect the battery modules to external circuitry outside the battery pack, the cover also features terminals that connect to the battery modules to extend them out. However, in this configuration, the terminals protrude from the cover, increasing the risk of interference between the battery pack and other external structures. Utility Model Content

[0003] The embodiments of this application provide a housing mechanism and a battery pack, which can improve the technical problem of battery packs being prone to interference.

[0004] In a first aspect, embodiments of this application provide a housing mechanism, comprising:

[0005] The box has a receiving cavity; and

[0006] The electrode structure includes a conductive sheet, a first conductive post, and a second conductive post. The conductive sheet is disposed on the housing. The conductive sheet includes a first sub-part and a second sub-part connected together. The first sub-part and the first conductive post are connected and both are located within the receiving cavity. The second sub-part and the second conductive post are connected and both are located outside the receiving cavity. In the thickness direction of the housing mechanism, the orthographic projection of the electrode structure is located within the orthographic projection of the housing.

[0007] In one embodiment, the housing includes a bottom plate and a side plate, the side plate being disposed on the bottom plate and together defining the receiving cavity, the conductive sheet passing through the side plate, and the orthographic projection of the pole structure in the thickness direction of the housing mechanism being located within the orthographic projection of the housing.

[0008] In one embodiment, the side plate is partially bent inward and defines a receiving groove outside the receiving cavity with the bottom plate. In the thickness direction of the housing mechanism, the orthographic projection of the receiving groove is located within the orthographic projection of the bottom plate. The second sub-part and the second conductive post are both received in the receiving groove.

[0009] In one embodiment, the housing further includes a support plate disposed within the receiving slot, the support plate being connected to the side plate and spaced apart from the bottom plate, and the second sub-part being supported on the support plate.

[0010] In one embodiment, the support plate divides the receiving groove into a first sub-groove and a second sub-groove, and the second conductive post is located in the first sub-groove; the housing mechanism further includes a connector disposed on the side plate and received in the second sub-groove; and / or, the support plate is an insulating structure, and the second sub-part is covered within the support plate.

[0011] In one embodiment, the housing is a plastic structure, the pole structure is a metal structure, and the housing and the pole structure are integrally injection molded.

[0012] In one embodiment, in the thickness direction of the housing mechanism, the height of the apex of the pole structure is lower than or equal to the height of the apex of the housing.

[0013] In one embodiment, the housing mechanism further includes a cover that covers the housing to close the receiving cavity, wherein the free end of the second conductive post is lower than the top surface of the cover; or the end face of the free end of the second conductive post is flush with the top surface of the cover.

[0014] In one embodiment, the cover is flat; and / or, the housing has a support surface, the cover is supported on the support surface and welded to the support surface.

[0015] Secondly, embodiments of this application provide a battery pack, including a battery module and the aforementioned housing mechanism, wherein the battery module is disposed within the receiving cavity and is connected to the first conductive post.

[0016] In one embodiment, the battery module includes a battery cell, a bracket, a busbar, and a battery management system module. The battery cell and the battery management system module are respectively disposed on opposite sides of the bracket. The busbar is disposed on the bracket and connects the battery cell and the battery management system module. The battery management system module is connected to the first conductive post.

[0017] The beneficial effects of the embodiments of this application are as follows:

[0018] In the embodiments of this application, the housing mechanism can be used in a battery pack, wherein the receiving cavity of the housing can be used to house the battery module for protection; and the terminal post structure on the housing can be used to electrically connect with the battery module. Current transmission between the battery module and external circuitry can be achieved using the first sub-part and first conductive post located within the receiving cavity, and the second sub-part and second conductive post located outside the receiving cavity in the terminal post structure. Furthermore, since the terminal post structure is located on the housing, compared to a method where it is located on the cover, this method can effectively reduce the height of the terminal post structure in the thickness direction of the housing mechanism, i.e., reduce the height of the terminal post structure protruding from the housing, control the overall thickness of the housing mechanism, and simultaneously control the orthographic projection of the terminal post structure in the thickness direction of the housing mechanism to be within the orthographic projection of the housing, that is, keep the side edge of the terminal post structure from exceeding the side edge of the housing, ultimately reducing the risk of interference between the battery pack and other external structures. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural diagram of the housing mechanism provided in an embodiment of this application from one perspective;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the housing mechanism provided in an embodiment of this application from another perspective;

[0022] Figure 3 This is a schematic diagram of the three-dimensional structure of the battery pack provided in the embodiments of this application. Figure 1 ;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the battery pack provided in the embodiments of this application. Figure 2 ;

[0024] Figure 5 This is a three-dimensional structural diagram of the battery module provided in an embodiment of this application.

[0025] Explanation of reference numerals in the attached figures:

[0026] 10. Shell structure;

[0027] 1. Box body; 11. Receiving cavity; 12. Bottom plate; 13. Side plate; 14. Receiving slot; 141. First sub-slot; 142. Second sub-slot; 15. Support plate; 16. Support surface;

[0028] 2. Pole post structure; 21. Conductive sheet; 211. First sub-section; 212. Second sub-section; 22. First conductive post; 23. Second conductive post;

[0029] 3. Connector

[0030] 4. Cover;

[0031] 100. Battery pack; 110. Battery module; 111. Battery cell; 112. Bracket; 113. Busbar; 114. Battery management system module. Detailed Implementation

[0032] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] Furthermore, it should be understood that the specific embodiments described herein are for illustrative and explanatory purposes only and are not intended to limit the scope of this application. In this application, unless otherwise stated, directional terms such as "upper" and "lower" generally refer to the upper and lower positions of the device in its actual use or operation, specifically the directions shown in the accompanying drawings; while "inner" and "outer" refer to the outline of the device.

[0034] The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0035] In the description of this application, it should be noted that, unless otherwise expressly 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, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0036] The terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus 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 apparatus. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0037] In the description of the embodiments of this application, the words "example" or "for example" are used to indicate exemplification, illustration, or description. Any embodiment or design described as "example" or "for example" in the embodiments of this application is not to be construed as being more preferred or having more advantages than another embodiment or design. The use of the words "example" or "for example" is intended to present relative concepts in a clear manner.

[0038] To facilitate understanding of the present application, the spline curves and arrows used in the reference numerals in the accompanying drawings are explained below: spline curves without arrows indicate solid parts, that is, parts with solid structures; spline curves with arrows indicate virtual parts, that is, parts without solid structures.

[0039] Firstly, please see Figures 1 to 5 This application provides a housing mechanism 10. The housing mechanism 10 includes a housing 1 and a pole structure 2. The housing 1 has a receiving cavity 11; the pole structure 2 includes a conductive sheet 21, a first conductive post 22, and a second conductive post 23. The conductive sheet 21 passes through the housing 1 and includes a first sub-part 211 and a second sub-part 212 connected together. The first sub-part 211 and the first conductive post 22 are connected and both are located within the receiving cavity 11, while the second sub-part 212 and the second conductive post 23 are connected and both are located outside the receiving cavity 11. In the thickness direction of the housing mechanism 10, the orthographic projection of the pole structure 2 is located within the orthographic projection of the housing 1.

[0040] The housing mechanism 10 is used in the battery pack 100, specifically for housing the battery module 110 of the battery pack 100, in order to protect the battery module 110.

[0041] The housing mechanism 10 includes a housing 1 with a receiving cavity 11 for accommodating the battery module 110. The housing mechanism 10 also includes a terminal structure 2, which is disposed on the housing 1 and connected to the battery module 110. The battery module 110 can be electrically connected to an external circuit via the terminal structure 2. Here, the external circuit refers to a circuit outside the battery pack 100. This can be either an external circuit outputting current to the battery module 110 through the terminal structure 2, or the battery module 110 outputting current to an external circuit through the terminal structure 2. Optionally, the terminal structure 2 can be either a positive terminal or a negative terminal.

[0042] In detail, the electrode structure 2 includes a conductive sheet 21, a first conductive post 22, and a second conductive post 23. That is, the conductive sheet 21, the first conductive post 22, and the second conductive post 23 are all conductors to realize the transmission of current. Optionally, the conductive sheet 21, the first conductive post 22, and the second conductive post 23 each independently contain at least one of copper, aluminum, nickel, and silver.

[0043] The conductive sheet 21 is disposed on the housing 1, that is, the conductive sheet 21 is disposed through the side wall of the receiving cavity 11, so that part of the conductive sheet 21 is located inside the receiving cavity 11 and part is located outside the receiving cavity 11. Specifically, the conductive sheet 21 includes a first sub-part 211 and a second sub-part 212, the first sub-part 211 is located inside the receiving cavity 11 and the second sub-part 212 is located outside the receiving cavity 11. The first sub-part 211 and the second sub-part 212 are connected. Optionally, the conductive sheet 21 also includes a middle part (not shown in the figure). The first sub-part 211, the middle part and the second sub-part 212 are arranged sequentially, and the first sub-part 211 is indirectly connected to the second sub-part 212 through the middle part. As an example, the first sub-part 211, the middle part and the second sub-part 212 are integrally formed.

[0044] Both the first conductive post 22 and the second conductive post 23 are connected to the conductive sheet 21. As an example, the first conductive post 22 and the second conductive post 23 are spaced apart on the same side surface of the conductive sheet 21. Of course, in other examples, the first conductive post 22 and the second conductive post 23 can also be disposed on opposite sides of the conductive sheet 21. Specifically, the first conductive post 22 is disposed on the first sub-part 211, that is, the first conductive post 22 is connected to the first sub-part 211, and the first sub-part 211 is located inside the receiving cavity 11, so the first conductive post 22 is also located inside the receiving cavity 11; the second conductive post 23 is disposed on the second sub-part 212, that is, the second conductive post 23 is connected to the second sub-part 212, and the second sub-part 212 is located outside the receiving cavity 11, so the second conductive post 23 is also located outside the receiving cavity 11. With this configuration, current can flow from outside the housing 1 through the second conductive post 23, sequentially through the second sub-part 212, the first sub-part 211, and the first conductive post 22 into the housing 1; or current can flow from inside the housing 1 through the first conductive post 22, sequentially through the first sub-part 211, the second sub-part 212, and the second conductive post 23 out of the housing 1, thereby realizing the transmission of current between the charged components inside the housing 1, such as the battery module 110, and the external circuit.

[0045] In the thickness direction of the housing mechanism 10, the orthographic projection of the pole post structure 2 lies within the orthographic projection of the box body 1, meaning that the side edge of the pole post structure 2 does not extend beyond the side edge of the box body 1. With this arrangement, when the housing mechanism 10 interferes with other external structures, the larger box body 1 typically contacts the other external structures first, thereby reducing the probability of the pole post structure 2 colliding with them and thus reducing the risk of damage to the pole post structure 2.

[0046] In summary, the housing mechanism 10 provided in this application embodiment can be used in the battery pack 100, wherein the receiving cavity 11 of the housing 1 can be used to receive the battery module 110 to protect the battery module 110; and the terminal post structure 2 on the housing 1 can be used to make electrical connection with the battery module 110. The first sub-part 211 and the first conductive post 22 located in the receiving cavity 11 of the terminal post structure 2, and the second sub-part 212 and the second conductive post 23 located outside the receiving cavity 11 can realize the current transmission between the battery module 110 and the external circuit. Furthermore, since the terminal structure 2 is located on the housing 1, compared to the method of setting it on the cover 4 (i.e., the terminal structure 2 completely protrudes from the housing 1), this method can effectively reduce the height of the terminal structure 2 in the thickness direction of the housing mechanism 10, that is, reduce the height of the terminal structure 2 protruding from the housing 1, control the overall thickness of the housing mechanism 10, and at the same time control the orthographic projection of the terminal structure 2 in the thickness direction of the housing mechanism 10 to be within the orthographic projection of the housing 1. In other words, it keeps the side edge of the terminal structure 2 from exceeding the side edge of the housing 1, ultimately reducing the risk of interference between the battery pack 100 and other external structures. For example, when the battery pack 100 is installed on an electrical device (such as a vehicle), it can reduce the risk of interference between the battery pack 100 and other structures on the electrical device. Other external structures refer to structures other than the battery pack 100.

[0047] In some implementations, please refer to Figure 1 and Figure 2 The housing 1 includes a bottom plate 12 and a side plate 13. The side plate 13 is disposed on the bottom plate 12 and together defines the receiving cavity 11. The conductive sheet 21 passes through the side plate 13.

[0048] The conductive sheet 21 is disposed on the housing 1, specifically on the side plate 13. Optionally, the conductive sheet 21 is perpendicular to the side plate 13, or the conductive sheet 21 is disposed at an angle relative to the side plate 13. As an example, both the first conductive post 22 and the second conductive post 23 extend along the thickness direction of the housing mechanism 10.

[0049] As an example, the box 1 has a square structure, the bottom plate 12 is a flat plate, and the side plate 13 includes a first side plate, a second side plate, a third side plate and a fourth side plate connected end to end in sequence. The first side plate, the second side plate, the third side plate and the fourth side plate are all set on the same side surface of the bottom plate 12. The first side plate, the second side plate, the third side plate and the fourth side plate and the bottom plate 12 enclose the receiving cavity 11.

[0050] In some embodiments, the orthographic projection of the pole post structure 2 is located within the orthographic projection of the base plate 12 in the thickness direction of the housing mechanism 10, that is, the side edge of the pole post structure 2 does not extend beyond the side edge of the base plate 12.

[0051] In some embodiments, the apex of the pole post structure 2 does not protrude beyond the apex of the housing 1 in the thickness direction of the housing mechanism 10. For example, in the thickness direction of the housing mechanism 10, the height of the apex of the pole post structure 2 may be equal to the height of the apex of the housing 1, or the height of the apex of the pole post structure 2 may be lower than the height of the apex of the housing 1. With this arrangement, when the housing mechanism 10 interferes with other external structures in its thickness direction, the taller housing 1 usually contacts other external structures first, thereby reducing the probability of the pole post structure 2 colliding with other external structures, and thus reducing the risk of damage to the pole post structure 2.

[0052] In some implementations, please refer to Figure 1 and Figure 2 The side plate 13 is partially bent inward and defines a receiving groove 14 located outside the receiving cavity 11. In the thickness direction of the housing mechanism 10, the orthographic projection of the receiving groove 14 is located within the orthographic projection of the bottom plate 12. The second sub-part 212 and the second conductive post 23 are both received in the receiving groove 14.

[0053] The partial inward bending of the side plate 13 refers to a portion of the side plate 13 bending into the receiving cavity 11. The bent portion of the side plate 13 can define a receiving groove 14. This can be either only the bent portion of the side plate 13 defining the receiving groove 14, or the bent portion of the side plate 13 and the bottom plate 12 jointly defining the receiving groove 14. As an example, a portion of the first side plate is bent into the receiving cavity 11. Specifically, the first side plate includes a first sub-plate, a second sub-plate, and a third sub-plate connected together. The first sub-plate extends along a first direction, the second sub-plate extends along a second direction, and the third sub-plate extends along a third direction. The first direction, the second direction, and the third direction intersect. The first sub-plate, the second sub-plate, and the third sub-plate define the receiving groove 14, that is, the groove walls of the receiving groove 14 are the first sub-plate, the second sub-plate, and the third sub-plate, respectively. As another example, the first side plate includes a fourth sub-plate and a fifth sub-plate connected together. The fourth sub-plate extends along a fourth direction, and the fifth sub-plate extends along a fifth direction. The fourth and fifth directions intersect. The fourth and fifth sub-plates are both erected on the base plate 12. The fourth sub-plate, the fifth sub-plate, and the base plate 12 define a receiving groove 14, that is, the groove walls of the receiving groove 14 are the fourth sub-plate, the fifth sub-plate, and the base plate 12, respectively.

[0054] Specifically, the receiving groove 14 is located outside the receiving cavity 11. The receiving groove 14 is used to receive the portion of the pole structure 2 located outside the receiving cavity 11, that is, the second sub-part 212 and the second conductive post 23 are both received in the receiving groove 14. In the thickness direction of the housing mechanism 10, the orthographic projection of the receiving groove 14 is located within the orthographic projection of the base plate 12, that is, the orthographic projection of the second sub-part 212 and the orthographic projection of the second conductive post 23 are both located within the orthographic projection of the base plate 12.

[0055] By providing a receiving groove 14, the second sub-part 212 and the second conductive post 23, which are located outside the receiving cavity 11, are both housed in the receiving groove 14, reducing the risk of collision between the second sub-part 212 and the second conductive post 23 and objects outside the housing mechanism 10, thereby protecting the second sub-part 212 and the second conductive post 23.

[0056] In some implementations, please refer to Figure 1 and Figure 2 The housing 1 also includes a support plate 15 disposed in the receiving slot 14. The support plate 15 is connected to the side plate 13 and is spaced apart from the bottom plate 12. The second sub-part 212 is supported on the support plate 15.

[0057] As an example, when the first side plate includes a first sub-plate, a second sub-plate, and a third sub-plate, the support plate 15 is connected to the first sub-plate and the second sub-plate, the support plate 15 is located above the third sub-plate, and the third sub-plate is located between the support plate 15 and the bottom plate 12, that is, the support plate 15 and the bottom plate 12 are separated by the third sub-plate.

[0058] As another example, when the first side plate includes a fourth sub-plate and a fifth sub-plate, the support plate 15 is connected to the fourth sub-plate and the fifth sub-plate, and the support plate 15 is located above the bottom plate 12 and spaced apart from the bottom plate 12.

[0059] The second sub-part 212 is supported on the support plate 15. The second sub-part 212 may be located inside the support plate 15 or on the surface of the support plate 15.

[0060] By providing a support plate 15 inside the receiving groove 14 to support the second sub-part 212, the risk of deformation of the second sub-part 212 can be reduced when the second conductive post 23 is connected to an external circuit, for example, when it is plugged in.

[0061] In some implementations, please refer to Figure 1 and Figure 2 The support plate 15 is an insulating structure, and the second sub-part 212 is enclosed within the support plate 15.

[0062] The support plate 15 is an insulating structure. Optionally, the material of the support plate 15 includes at least one of plastic and ceramic. The second sub-part 212 is covered within the support plate 15. The second sub-part 212 may be completely covered within the support plate 15, or the second sub-part 212 may be partially covered within the support plate 15.

[0063] With the above configuration, on the one hand, the support plate 15 can protect the second sub-part 212 and reduce the risk of the second sub-part 212 being corroded by corrosive media; on the other hand, it can isolate the second sub-part 212 and reduce the risk of electric shock.

[0064] In some implementations, please refer to Figure 1 and Figure 2 The support plate 15 divides the receiving groove 14 into a first sub-groove 141 and a second sub-groove 142, and the second conductive post 23 is located in the first sub-groove 141; the housing mechanism 10 also includes a connector 3, which is disposed on the side plate 13 and is received in the second sub-groove 142.

[0065] As an example, when the first side plate includes a first sub-plate, a second sub-plate, and a third sub-plate, the support plate 15, the first sub-plate, and the second sub-plate define a first sub-groove 141, and the first sub-plate, the second sub-plate, the third sub-plate, and the support plate 15 define a second sub-groove 142.

[0066] As another example, when the first side plate includes a fourth sub-plate and a fifth sub-plate, the support plate 15, the fourth sub-plate, and the fifth sub-plate define a first sub-groove 141, and the fourth sub-plate, the fifth sub-plate, the support plate 15, and the bottom plate 12 define a second sub-groove 142.

[0067] As an example, connector 3 is a communication connector. Connector 3 is used for electrical connection with battery module 110, and in particular for electrical connection with battery management system module 114 in battery module 110.

[0068] By dividing the receiving slot 14 into a first sub-slot 141 and a second sub-slot 142, wherein the first sub-slot 141 is used to receive the second conductive post 23 and the second sub-slot 142 is used to receive the connector 3, the second conductive post 23 and the connector 3 are protected respectively.

[0069] In some implementations, please refer to Figure 1 and Figure 2 The housing 1 is made of plastic, while the pole structure 2 is made of metal. The housing 1 and the pole structure 2 are integrally injection molded. This design not only enhances the connection between the housing 1 and the pole structure 2, but also reduces the risk of moisture entering the containment cavity 11 through the connection between the housing 1 and the pole structure 2.

[0070] As an example, the formation process of the shell structure 10 includes: first preparing the metal pole structure 2, then placing the pole structure 2 into the injection mold, injecting high-temperature molten plastic into the mold, and after the plastic solidifies, the box 1 and pole structure 2 are integrally injection molded together.

[0071] In some implementations, please refer to Figure 3 and Figure 4 The housing mechanism 10 also includes a cover 4, which is placed on the housing 1 to close the receiving cavity 11. The free end of the second conductive post 23 is lower than the top surface of the cover 4; or the end face of the free end of the second conductive post 23 is flush with the top surface of the cover 4.

[0072] The free end of the second conductive post 23 refers to the end of the second conductive post 23 that is away from the second sub-part 212. The end face of the free end of the second conductive post 23 is not higher than the top surface of the cover 4.

[0073] The above technical solution can not only effectively control the overall thickness of the housing mechanism 10, but also reduce the risk of collision between the second conductive post 23 and objects outside the housing mechanism 10, thereby improving the structural stability of the second conductive post 23.

[0074] In some implementations, please refer to Figure 3 and Figure 4 The cover 4 is flat. This makes it easier to control the overall thickness of the housing mechanism 10.

[0075] In some implementations, please refer to Figure 3 and Figure 4 The housing 1 has a support surface 16, and the cover 4 is supported on and welded to the support surface 16. The support surface 16 increases the contact area between the cover 4 and the housing 1, improving the welding effect between them. Compared to using screws, welding the cover 4 to the housing 1 further reduces the thickness of the housing mechanism 10.

[0076] As an example, the cover 4 is welded to the support surface 16 of the box 1 by laser welding or ultrasonic welding.

[0077] Secondly, please see Figures 1 to 5 This application provides a battery pack 100, which includes a battery module 110 and the aforementioned housing mechanism 10. The battery module 110 is disposed in the receiving cavity 11 and is connected to the first conductive post 22.

[0078] The battery pack 100 includes the aforementioned housing mechanism 10, and therefore the battery pack 100 has all the beneficial effects of the aforementioned housing mechanism 10, which will not be elaborated here.

[0079] In some implementations, please refer to Figure 5The battery module 110 includes a battery cell 111, a bracket 112, a busbar 113, and a battery management system module 114. The battery cell 111 and the battery management system module 114 are respectively disposed on opposite sides of the bracket 112. The busbar 113 is disposed on the bracket 112 and connects the battery cell 111 and the battery management system module 114. The battery management system module 114 is connected to the first conductive post 22. By connecting the battery cell 111, bracket 112, busbar 113, and battery management system module 114 together to form a whole, the assembly difficulty of the battery pack 100 can be reduced. Of course, in other embodiments, the battery cell 111, bracket 112, busbar 113, and battery management system module 114 may not be assembled into a whole.

[0080] Here, the battery cell 111 can be a lithium-ion cell, sodium-ion cell, sodium-lithium-ion cell, lithium metal cell, sodium metal cell, lithium-sulfur cell, magnesium-ion cell, nickel-metal hydride cell, nickel-cadmium cell, lead-acid cell, etc., and this application embodiment does not limit this. The busbar 113 can be an aluminum busbar, copper busbar, or nickel busbar. The bracket 112 can be a plastic part. The battery management system module 114 includes a circuit board and a BMS chip mounted on the circuit board.

[0081] In some embodiments, the battery pack 100 is a low-voltage battery pack with an output voltage less than or equal to 48V. For example, the battery pack 100 may be a 12V low-voltage battery pack, a 24V low-voltage battery pack, or a 48V low-voltage battery pack.

[0082] In some implementations, the low-voltage battery pack is a starter battery pack. A starter battery pack, also known as a starting power supply, is a power source used to provide initial power to a device or system to start it up. As an example, a starter battery pack includes an automotive starter power supply.

[0083] The embodiments of this application have been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A housing mechanism (10), characterized in that, include: The box (1) has a receiving cavity (11); as well as The pole structure (2) includes a conductive sheet (21), a first conductive post (22), and a second conductive post (23). The conductive sheet (21) is inserted through the housing (1). The conductive sheet (21) includes a first sub-part (211) and a second sub-part (212) connected together. The first sub-part (211) and the first conductive post (22) are connected and both are located inside the receiving cavity (11). The second sub-part (212) and the second conductive post (23) are connected and both are located outside the receiving cavity (11). In the thickness direction of the housing mechanism (10), the orthographic projection of the pole structure (2) is located within the orthographic projection of the housing (1).

2. The housing mechanism (10) according to claim 1, characterized in that, The housing (1) includes a bottom plate (12) and a side plate (13). The side plate (13) is disposed on the bottom plate (12) and together defines the receiving cavity (11). The conductive sheet (21) passes through the side plate (13).

3. The housing mechanism (10) according to claim 2, characterized in that, The side plate (13) is partially bent inward and defines a receiving groove (14) located outside the receiving cavity (11). In the thickness direction of the housing mechanism (10), the orthographic projection of the receiving groove (14) is located within the orthographic projection of the bottom plate (12). The second sub-part (212) and the second conductive post (23) are both received in the receiving groove (14).

4. The housing mechanism (10) according to claim 3, characterized in that, The housing (1) also includes a support plate (15) disposed in the receiving slot (14), the support plate (15) is connected to the side plate (13), and the support plate (15) is spaced apart from the bottom plate (12), and the second sub-part (212) is supported on the support plate (15).

5. The housing mechanism (10) according to claim 4, characterized in that, The support plate (15) divides the receiving groove (14) into a first sub-groove (141) and a second sub-groove (142), and the second conductive post (23) is located in the first sub-groove (141); the housing mechanism (10) further includes a connector (3), which is disposed on the side plate (13) and is received in the second sub-groove (142); and / or, the support plate (15) is an insulating structure, and the second sub-part (212) is covered in the support plate (15).

6. The housing mechanism (10) according to any one of claims 1 to 5, characterized in that, The housing (1) is a plastic structure, the pole structure (2) is a metal structure, and the housing (1) and the pole structure (2) are integrally injection molded; and / or, in the thickness direction of the housing mechanism (10), the height of the vertex of the pole structure (2) is lower than or equal to the height of the vertex of the housing (1).

7. The housing mechanism (10) according to any one of claims 1 to 5, characterized in that, The housing mechanism (10) further includes a cover (4), which covers the box (1) to close the receiving cavity (11), and the free end of the second conductive post (23) is lower than the top surface of the cover (4); or the end face of the free end of the second conductive post (23) is flush with the top surface of the cover (4).

8. The housing mechanism (10) according to claim 7, characterized in that, The cover (4) is flat; and / or the box (1) has a support surface (16), the cover (4) is supported on the support surface (16) and welded to the support surface (16).

9. A battery pack (100), characterized in that, It includes a battery module (110) and a housing mechanism (10) as described in any one of claims 1 to 8, wherein the battery module (110) is disposed within the receiving cavity (11) and the battery module (110) is connected to the first conductive post (22).

10. The battery pack (100) according to claim 9, characterized in that, The battery module (110) includes a battery cell (111), a bracket (112), a busbar (113), and a battery management system module (114). The battery cell (111) and the battery management system module (114) are respectively disposed on opposite sides of the bracket (112). The busbar (113) is disposed on the bracket (112) and connects the battery cell (111) and the battery management system module (114). The battery management system module (114) is connected to the first conductive post (22).

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