Battery pack shell structure and battery pack

Abstract

The utility model relates to battery pack technical field and provide a kind of battery package shell structure and battery package.The utility model discloses battery package shell structure, including frame, bottom plate assembly in the bottom of frame, and bottom guard plate in the bottom of bottom plate assembly, and the installation cavity for installing module is formed between frame and bottom plate assembly, and the cavity is formed between bottom guard plate and bottom plate assembly, and there is collision sensing device on bottom guard plate in cavity.The utility model discloses battery package shell structure, can be perceived bottom knock by collision sensing device, to provide collision sensing function for battery package, to facilitate the promotion of vehicle safety performance.

Description

Technical Field

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

[0002] The casing structure of the power battery pack is crucial, its main function being to support the entire power battery pack's output assembly and provide protection for internal components such as modules and electrical parts. However, in actual use of electric vehicles, especially when the wheels traverse complex road conditions such as potholes, bumps, or rocky surfaces, the bottom of the electric vehicle is highly susceptible to impacts and scrapes. Currently, most vehicles on the market lack bottom impact detection capabilities, posing a significant safety risk. Utility Model Content

[0003] In view of this, the present invention aims to propose a battery pack housing structure that can provide collision sensing function for the battery pack, thereby improving the overall vehicle safety performance.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A battery pack housing structure includes a frame, a bottom plate assembly disposed at the bottom of the frame, and a bottom protective plate disposed at the bottom of the bottom plate assembly.

[0006] The frame and the base plate assembly form a mounting cavity for mounting the module. The bottom guard plate and the base plate assembly form a cavity, and a collision sensing device mounted on the bottom guard plate is provided in the cavity.

[0007] Furthermore, the base plate assembly has a wire harness passage portion and a sealing portion provided at the wire harness passage portion.

[0008] Furthermore, the wiring harness passage includes an opening that penetrates the base plate assembly, and the sealing part includes a main body located at the bottom of the base plate assembly and an annular protrusion protruding to one side of the main body, and a wiring harness through hole located within the annular protrusion on the main body; the annular protrusion is inserted into the opening, and the wiring harness of the collision sensing device passes through the wiring harness through hole.

[0009] Furthermore, the main body is provided with a sealing groove surrounding the annular protrusion, and a sealing strip disposed within the sealing groove; the sealing strip is sandwiched between the main body and the base plate assembly and is used to seal the gap between the two.

[0010] Furthermore, a wire harness constraint groove is provided on the side of the main body away from the base plate assembly, and the wire harness constraint groove extends to the edge of the main body; the wire harness through hole communicates with the wire harness constraint groove, and the wire harness of the collision sensing device passes through the wire harness constraint groove and is inserted into the wire harness through hole.

[0011] Furthermore, the annular protrusion and / or the wire harness constraint groove are filled with structural adhesive.

[0012] Furthermore, the main body is provided with a through mounting hole, which is located between the sealing groove and the annular protrusion; the main body is mounted on the base plate assembly by a threaded component passing through the mounting hole and a nut screwed to the threaded component.

[0013] Furthermore, the main body is provided with a glue-filling groove on the side away from the base plate assembly; the glue-filling groove is radially protruding outward along the mounting hole, and structural adhesive is filled into the glue-filling groove.

[0014] Furthermore, the base plate assembly includes a base plate, a first insulating layer disposed on top of the base plate, a flow channel plate disposed at the bottom of the base plate, and a second insulating layer disposed at the bottom of the flow channel plate, the cavity being disposed between the base plate and the second insulating layer; and / or, the collision sensing device includes a plurality of elastic wave sensors spaced apart along the edge of the base plate.

[0015] Compared with the prior art, this utility model has the following advantages:

[0016] (1) The battery pack housing structure of this utility model includes a frame, a bottom plate assembly disposed at the bottom of the frame, and a bottom guard plate disposed at the bottom of the bottom plate assembly. The frame and the bottom plate assembly form a mounting cavity for mounting modules, and the bottom guard plate and the bottom plate assembly form a cavity. A collision sensing device mounted on the bottom guard plate is disposed within the cavity. With this configuration, the collision sensing device can detect bottom impacts, thereby providing a collision sensing function for the battery pack and improving the overall vehicle safety performance.

[0017] (2) The base plate assembly has a wire harness passage and a sealing part located at the wire harness passage. This design can effectively prevent foreign objects from entering the battery pack through the wire harness channel, thereby improving the reliability of the battery pack, while allowing the wire harness to pass through the base plate assembly, which helps to ensure the stability of the electrical connection performance and signal transmission performance of the wire harness.

[0018] (3) The wiring harness passage includes an opening that penetrates the base plate assembly. The sealing part includes a main body located at the bottom of the base plate assembly and an annular protrusion protruding to one side of the main body. A wiring harness through hole is provided on the main body within the annular protrusion. The annular protrusion is inserted into the opening, and the wiring harness of the collision sensing device passes through the wiring harness through hole. In this way, the cooperation between the annular protrusion and the opening can provide guidance for the installation of the main body, thereby facilitating the installation of the main body. The design of the wiring harness through hole allows the wiring harness to pass stably at the bottom of the base plate assembly, reducing the shaking of the wiring harness during vehicle operation and friction with surrounding components, reducing the risk of wiring harness wear and breakage, and further ensuring the electrical connection performance and signal transmission reliability of the wiring harness.

[0019] (4) The main body is provided with a sealing groove surrounding the annular protrusion, and a sealing strip is provided in the sealing groove. The sealing strip is sandwiched between the main body and the base plate assembly and is used to seal the gap between the two. With this arrangement, the softness and elasticity of the sealing strip can fit tightly against the surfaces of the main body and the base plate assembly, thereby fully filling the tiny gap between them, which helps to further enhance the sealing performance of the sealing part. The matching arrangement of the sealing strip and the sealing groove can simplify the installation process between the main body and the base plate assembly while ensuring the sealing effect.

[0020] (5) A wire harness constraint groove is provided on the side of the main body away from the base plate assembly, extending to the edge of the main body. The wire harness through hole communicates with the wire harness constraint groove, and the wire harness of the collision sensing device passes through the wire harness constraint groove and into the wire harness through hole. This arrangement provides a clear guiding path for the wire harness of the collision sensing device, reduces the risk of signal transmission failure or electrical connection problems caused by wire harness entanglement, and also facilitates the constraint of the wire harness within the wire harness constraint groove, further enhancing the stability of the wire harness.

[0021] (6) Structural adhesive is injected into the annular protrusion and / or the wire harness constraint groove. This arrangement fills the gaps between the annular protrusion, the wire harness constraint groove, and the wire harness through-hole, thereby further enhancing the sealing effect of the sealing part. In addition, the injected structural adhesive also provides additional protection for the wire harness, preventing the wire harness from being damaged by friction in the groove, thereby reducing the risk of wire harness breakage and further ensuring the stability of signal transmission and electrical connection.

[0022] (7) The main body is provided with a through mounting hole, located between the sealing groove and the annular protrusion. The main body is installed on the base plate assembly via a threaded fitting that passes through the mounting hole and a nut that is screwed into the threaded fitting. This configuration, by providing a mounting hole on the main body and utilizing the cooperation of the threaded fitting and the nut, allows the main body to be precisely and firmly fixed to the base plate assembly, effectively preventing loosening or displacement of the main body due to vibration and bumps during vehicle operation. At the same time, the mounting hole is located between the sealing groove and the annular protrusion, ensuring that the main body can be firmly installed without damaging the sealing performance of the sealing strip in the sealing groove, thereby effectively ensuring the sealing performance of the sealing part.

[0023] (8) A glue-filling groove is provided on the side of the main body away from the base plate assembly. The glue-filling groove protrudes radially outward along the mounting hole, and structural adhesive is filled into the glue-filling groove. This arrangement can fill the gap between the threaded parts and the mounting hole, thereby sealing the area around the mounting hole and effectively ensuring the sealing performance of the sealing part.

[0024] (9) The base plate assembly includes a base plate, a first insulating layer disposed on top of the base plate, a flow channel plate disposed at the bottom of the base plate, and a second insulating layer disposed at the bottom of the flow channel plate. A cavity is disposed between the base plate and the second insulating layer. The collision sensing device includes multiple elastic wave sensors spaced apart along the edge of the base plate. Thus, the multi-layer design of the base plate assembly provides better protection for the battery pack and also provides installation space for the collision sensing device. Furthermore, the collision sensing device uses multiple elastic wave sensors spaced apart along the edge of the base plate, which can better detect bottom collisions and impacts. It also allows for a more rational placement of the collision sensing device, reducing the number of sensors used and lowering production costs. This allows for the implementation of collision sensing functionality without significantly increasing the cost of the battery pack, thereby improving the overall vehicle safety level.

[0025] This utility model also proposes a battery pack, which includes the battery pack housing structure described above.

[0026] The battery pack of this utility model, by having the battery pack shell structure as described above, can realize battery collision warning, improve the overall safety performance of the battery pack, and thus enhance the competitiveness of the battery pack in the market. Attached Figure Description

[0027] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0028] Figure 1 This is an overall schematic diagram of the battery pack housing structure described in an embodiment of the present invention;

[0029] Figure 2 for Figure 1 A partial view at point A in the middle;

[0030] Figure 3 for Figure 1 A schematic diagram of the structure shown from another perspective;

[0031] Figure 4 for Figure 3 A partial view at point B in the middle;

[0032] Figure 5 This is a cross-sectional view of the battery pack housing structure described in the embodiments of this utility model;

[0033] Figure 6 for Figure 5 A partial view at point C;

[0034] Figure 7 This is an overall schematic diagram of the sealing part described in an embodiment of the present utility model;

[0035] Figure 8 for Figure 7 A schematic diagram of the structure shown from another perspective;

[0036] Figure 9 for Figure 8 Sectional view at point DD;

[0037] Figure 10 for Figure 8 Sectional view at EE;

[0038] Figure 11 This is a schematic diagram of the bottom protective plate in this embodiment;

[0039] Explanation of reference numerals in the attached figures:

[0040] 1. Frame; 11. Frame body; 12. Crossbeam; 2. Base plate assembly; 21. Flow channel plate; 22. Bottom guard plate; 221. Intermediate fixing point; 23. First insulation layer; 24. Second insulation layer; 25. Base plate; 3. Wiring harness passage section;

[0041] 4. Sealing part; 41. Main body; 42. Annular protrusion; 43. Wire harness through hole; 44. Sealing groove; 45. Sealing strip; 46. Wire harness constraint groove; 47. Mounting hole; 48. Threaded part; 49. Nut; 410. Glue potting groove; 5. Collision sensing device; 6. Wire harness; 7. Controller. Detailed Implementation

[0042] To make the technical solution and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0043] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0044] Furthermore, in the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" appear, indicating orientation or positional relationship, they 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 do not 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. In addition, if terms such as "first" or "second" appear, they are also used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0045] Furthermore, in the description of this utility model, unless otherwise explicitly defined, the terms "installation," "connection," "joining," and "connector" 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 in light of the specific circumstances.

[0046] In this utility model, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of this utility model. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0047] The present invention will now be described in detail through exemplary embodiments. However, it should be understood that, without further description, elements, structures, and features in one embodiment may be advantageously incorporated into other embodiments.

[0048] The first aspect of this utility model provides a battery pack housing structure, which is applied in a battery pack and is mainly used to improve the safety performance of the battery pack. Furthermore, the battery pack of this embodiment utilizes an innovative structural design to accommodate collision sensing functions, thereby improving the overall vehicle safety performance.

[0049] Currently, most vehicles on the market lack the ability to detect bottom impacts, posing a significant safety risk.

[0050] In view of this, in order to overcome the shortcomings of the prior art, the battery pack housing structure of this embodiment incorporates... Figures 1 to 4 as well as Figure 11 As shown, the overall design includes a frame 1, a base plate assembly 2 located at the bottom of the frame 1, and a bottom protective plate 22 located at the bottom of the base plate assembly 2.

[0051] The frame 1 and the base plate assembly 2 form an installation cavity for mounting the module, and the bottom guard plate 22 and the base plate assembly 2 form a cavity, and a collision sensing device 5 is installed on the bottom guard plate 22 in the cavity.

[0052] Therefore, by forming a mounting cavity for mounting the module between the frame 1 and the base plate assembly 2, and forming a cavity between the bottom guard plate 22 and the base plate assembly 2, a collision sensing device 5 mounted on the bottom guard plate 22 is provided within the cavity. This configuration allows the collision sensing device 5 to detect bottom impacts, thereby providing collision sensing functionality for the battery pack and improving overall vehicle safety performance.

[0053] Furthermore, in specific implementation, to be detailed, such as Figure 5 and Figure 6 As shown, in this embodiment, the frame 1 includes a frame 11 surrounding the battery pack housing structure. The frame 11 forms a cavity for holding the battery cells. A crossbeam 12 is provided inside the cavity. The crossbeam 12 is arranged along the width direction of the battery pack housing and multiple crossbeams are arranged along the length direction of the battery pack housing. This arrangement can enhance the structural strength of the battery pack housing, improve its torsional resistance, and further improve the safety performance of the battery pack. The bottom protective plate 22 is also provided with a middle fixing point 221. The middle fixing point 221 is used to connect the bottom protective plate 22 to the crossbeam 12, and the middle fixing point 221 is correspondingly arranged with the crossbeam 12 and multiple crossbeams are arranged along the width direction of the battery pack housing.

[0054] Based on the above overall introduction, specifically, as an exemplary structural form, such as Figure 3 As shown, for the battery pack housing structure of this embodiment, the collision sensing device 5 is installed on the bottom guard plate 22. During installation, the collision sensing device 5 should be as close as possible to the edge of the bottom guard plate 22 to avoid damage to the sensor due to vibration of the bottom guard plate 22 during driving. During installation, the collision sensing device 5 should be pressed evenly onto the surface of the bottom guard plate 22, maintaining tight contact, and the contact surface should be free of laitance, dust, or other foreign matter. Furthermore, the distance between the collision sensing device 5 and the middle fixing point 221 of the bottom guard plate 22 should be ≥150mm to avoid affecting sensor detection in the event of an impact.

[0055] Continue to combine Figures 1 to 4 As shown, in some exemplary embodiments, the base plate assembly 2 has a wiring harness passage portion 3 and a sealing portion 4 located at the wiring harness passage portion 3. It should be noted that providing the sealing portion 4 at the wiring harness passage portion 3 effectively prevents foreign objects from entering the battery pack through the wiring harness passage portion 3, improving battery pack reliability. The dedicated wiring harness passage portion 3 allows the wiring harness 6 to pass through the base plate assembly 2, thereby ensuring the stability of the electrical connection performance and signal transmission performance of the wiring harness 6.

[0056] Depend on Figure 2 and Figure 4 and combined Figure 7 and Figure 8 As shown, in some exemplary embodiments, the wiring harness passage 3 includes an opening that passes through the base plate assembly 2, the sealing part 4 includes a main body 41 located at the bottom of the base plate assembly 2, and an annular protrusion 42 protruding to one side of the main body 41, and a wiring harness through hole 43 located in the annular protrusion 42 on the main body 41. The annular protrusion 42 is inserted into the opening, and the wiring harness 6 of the collision sensing device 5 passes through the wiring harness through hole 43.

[0057] At this time, the cooperation between the annular protrusion 42 and the opening can provide guidance for the installation of the main body 41, thereby facilitating the installation of the main body 41. The design of the wire harness through hole 43 is conducive to the stable passage of the wire harness 6 at the bottom of the base plate assembly 2, reducing the shaking of the wire harness 6 during vehicle operation and friction with surrounding components, reducing the risk of wear and breakage of the wire harness 6, and ensuring the electrical connection performance and signal transmission reliability of the wire harness 6.

[0058] Furthermore, the main body 41 is made of aluminum, which effectively controls the weight of the main body 41 while ensuring the structural strength of the sealing part 4, thus contributing to the lightweighting of the battery pack casing. Aluminum also has good machinability, which reduces processing difficulty and improves production efficiency, thereby enhancing the production efficiency and market competitiveness of the battery pack.

[0059] In addition, a controller 7 is provided inside the frame 1. The controller 7 is connected to the wiring harness 6 of the collision sensing device 5. The controller 7 is the control unit of the battery. Existing technology can be used. This embodiment does not improve it. Therefore, its arrangement and structure will not be described in detail.

[0060] Continue to combine Figures 7 to 10As shown, in some exemplary embodiments, the main body 41 has a sealing groove 44 surrounding the annular protrusion 42, and a sealing strip 45 disposed within the sealing groove 44. The sealing strip 45 is sandwiched between the main body 41 and the base plate assembly 2 and is used to seal the gap between them. This arrangement allows the sealing strip 45 to fit tightly against the surfaces of the main body 41 and the base plate assembly 2, thereby fully filling the tiny gaps between them and further enhancing the sealing performance of the sealing portion 4. The cooperative arrangement of the sealing strip 45 and the sealing groove 44 simplifies the installation process between the main body 41 and the base plate assembly 2 while ensuring a sealing effect.

[0061] It is worth noting that, in specific implementation, the compression of the sealing strip 45 should be maintained at 10% to 50% to ensure that the sealing strip 45 fits tightly with the main body 41 and the base plate assembly 2, thereby effectively ensuring the sealing effect and avoiding installation difficulties caused by excessive compression.

[0062] Combination Figure 4 , Figure 7 as well as Figure 9 As shown, in some exemplary embodiments, the main body 41 has a wire harness constraint groove 46 on the side away from the base plate assembly 2, extending to the edge of the main body 41. A wire harness through-hole 43 communicates with the wire harness constraint groove 46, and the wire harness 6 of the collision sensing device 5 passes through the wire harness constraint groove 46 into the wire harness through-hole 43. This provides a clear guiding path for the wire harness 6 of the collision sensing device 5, reducing the risk of signal transmission failures or electrical connection problems caused by wire harness 6 entanglement, and also facilitates the constraint of the wire harness 6 within the wire harness constraint groove 46, further enhancing the stability of the wire harness 6.

[0063] In some exemplary embodiments, structural adhesive is injected into the annular protrusion 42 and the wire harness constraint groove 46. This fills the gaps between the annular protrusion 42, the wire harness constraint groove 46, and the wire harness through-hole 43 and the wire harness 6, thereby further enhancing the sealing effect of the sealing portion 4. The injected structural adhesive also provides additional protection for the wire harness 6, preventing frictional damage within the groove, thus reducing the risk of wire harness breakage and further ensuring the stability of signal transmission and electrical connections.

[0064] In specific implementation, the structural adhesive in this embodiment can be epoxy resin, silicone, or any other material that can achieve waterproof sealing, as is well known to those skilled in the art. Further details will not be provided.

[0065] Depend on Figure 2 , Figure 4 , Figure 7 and continue to combine Figure 10As shown, in some exemplary embodiments, the body 41 has a through mounting hole 47 located between the sealing groove 44 and the annular protrusion 42. The body 41 is mounted on the base plate assembly 2 by means of a threaded member 48 passing through the mounting hole 47 and a nut 49 screwed to the threaded member 48.

[0066] This configuration, by providing mounting holes 47 on the main body 41 and utilizing the engagement of threaded parts 48 and nuts 49, allows the main body 41 to be precisely and securely fixed to the base plate assembly 2, effectively preventing loosening or displacement of the main body 41 due to vibration and bumps during vehicle operation. Simultaneously, the mounting holes 47 are located between the sealing groove 44 and the annular protrusion 42. This arrangement ensures a secure installation of the main body 41 without compromising the sealing performance of the sealing strip 45 within the sealing groove 44, thus effectively guaranteeing the sealing performance of the sealing part 4.

[0067] Depend on Figure 4 , Figure 7 as well as Figure 10 As shown, in some exemplary embodiments, the main body 41 has a potting groove 410 on the side away from the base plate assembly 2. The potting groove 410 is radially protruding outward along the mounting hole 47, and structural adhesive is poured into the potting groove 410. This arrangement can fill the gap between the threaded part 48 and the mounting hole 47, thereby sealing the area around the mounting hole 47 and further ensuring the sealing performance of the sealing part 4.

[0068] In some exemplary embodiments, the base plate assembly 2 includes a base plate 25, a first insulating layer 23 disposed on top of the base plate 25, a flow channel plate 21 disposed at the bottom of the base plate 25, and a second insulating layer 24 disposed at the bottom of the flow channel plate 21, with a cavity disposed between the bottom protective plate 22 and the second insulating layer 24. Thus, the multi-layer design of the base plate assembly 2 provides better protection for the battery pack and provides installation space for the collision sensing device 5.

[0069] In practice, both the first insulating layer 23 and the second insulating layer 24 are sprayed onto the top of the base plate 25 and the bottom of the flow channel plate 21 using a spraying process. This ensures that the first insulating layer 23 and the second insulating layer 24 are evenly covered on the surfaces of the base plate 25 and the flow channel plate 21, forming a complete insulating protective layer. This helps improve the overall insulation performance and protective effect of the battery pack. Furthermore, the existing spraying process can be automated, reducing production costs while maintaining production efficiency.

[0070] Continue as Figure 3As shown, the collision sensing device 5 includes multiple elastic wave sensors spaced apart along the edge of the bottom guard plate 22. The advantage of this arrangement is that by using multiple elastic wave sensors spaced apart along the edge of the bottom guard plate 22, the collision sensing device 5 can better detect bottom collisions and impacts. It also allows for a more rational arrangement of the collision sensing device 5, reducing the number of sensors used and lowering production costs. This allows for the implementation of collision sensing functionality without significantly increasing battery pack costs, thereby improving the overall vehicle safety level.

[0071] In addition, in specific implementations, the elastic wave sensor can be replaced with other sensors well known to those skilled in the art, such as resistive sensors, capacitive sensors, etc., as long as the sensor can detect collisions and has a low cost. This will not be elaborated further.

[0072] It should be noted that, in specific implementation, related structures not mentioned in this embodiment, such as the first insulating layer 23 and the bottom protective plate 22, can be referred to as related structures well known to those skilled in the art, and will not be described in detail here.

[0073] The battery pack housing structure of this embodiment adopts the above design. A frame 1 is provided, and a base plate assembly 2 is provided at the bottom of the frame 1, along with a bottom guard plate 22 located at the bottom of the base plate assembly 2. The frame 1 and the base plate assembly 2 form a mounting cavity for mounting modules. A cavity is formed between the bottom guard plate 22 and the base plate assembly 2, and a collision sensing device 5 is installed on the bottom guard plate 22 within the cavity. The collision sensing device can detect bottom impacts, thereby providing collision sensing functionality for the battery pack and improving overall vehicle safety performance. A second aspect of this utility model provides a battery pack, which includes the battery pack housing structure described above.

[0074] In the battery pack of this embodiment, when a collision occurs at the bottom of the vehicle, the object will first hit the underbody protection plate 22. Subsequently, the collision sensing device 5 installed on the underbody protection plate 22 will detect the collision, and then the collision sensing device 5 will transmit the signal to the controller 7 through the wiring harness 6.

[0075] The battery pack of this embodiment, by having the battery pack housing structure as described above, can realize battery collision warning, improve the overall safety performance of the battery pack, and thus enhance the competitiveness of the battery pack in the market.

[0076] The above descriptions are merely some embodiments of this utility model and are not intended to limit the utility model. The technical features or structures in the foregoing different embodiments can be arbitrarily combined to form other specific technical solutions as needed. For those skilled in the art, this utility model can have various modifications and variations. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A battery pack housing structure, characterized in that: Includes a frame, a base plate assembly disposed at the bottom of the frame, and a bottom protective plate disposed at the bottom of the base plate assembly; The frame and the base plate assembly form a mounting cavity for mounting the module. The bottom guard plate and the base plate assembly form a cavity, and a collision sensing device mounted on the bottom guard plate is provided in the cavity.

2. The battery pack housing structure according to claim 1, characterized in that: The base plate assembly has a wire harness passage portion and a sealing portion located at the wire harness passage portion.

3. The battery pack housing structure according to claim 2, characterized in that: The wire harness passage includes an opening that penetrates the base plate assembly, and the sealing part includes a main body located at the bottom of the base plate assembly and an annular protrusion protruding to one side of the main body, and a wire harness through hole located in the annular protrusion on the main body; The annular protrusion is inserted into the opening, and the wiring harness of the collision sensing device passes through the wiring harness through hole.

4. The battery pack housing structure according to claim 3, characterized in that: The main body is provided with a sealing groove surrounding the annular protrusion, and a sealing strip disposed within the sealing groove; The sealing strip is sandwiched between the main body and the base plate assembly and is used to seal the gap between them.

5. The battery pack housing structure according to claim 3, characterized in that: The main body has a wire harness constraint groove on the side away from the base plate assembly, and the wire harness constraint groove extends to the edge of the main body; The wiring harness through hole is connected to the wiring harness constraint groove, and the wiring harness of the collision sensing device passes through the wiring harness constraint groove in the wiring harness through hole.

6. The battery pack housing structure according to claim 5, characterized in that: Structural adhesive is injected into the annular protrusion and / or the wire harness constraint groove.

7. The battery pack housing structure according to claim 3, characterized in that: The main body is provided with a through mounting hole, which is located between the sealing groove and the annular protrusion. The main body is mounted on the base plate assembly via a threaded component that passes through the mounting hole and a nut that is screwed onto the threaded component.

8. The battery pack housing structure according to claim 7, characterized in that: The main body is provided with a glue-filling groove on the side away from the base plate assembly; The glue-filling groove protrudes radially outward along the mounting hole, and structural adhesive is poured into the glue-filling groove.

9. The battery pack housing structure according to any one of claims 1 to 8, characterized in that: The base plate assembly includes a base plate, a first insulating layer disposed on top of the base plate, a flow channel plate disposed at the bottom of the base plate, and a second insulating layer disposed at the bottom of the flow channel plate, wherein the cavity is disposed between the base plate and the second insulating layer; and / or, The collision sensing device includes a plurality of elastic wave sensors spaced apart along the edge of the bottom guard plate.

10. A battery pack, characterized in that: The battery pack includes the battery pack housing structure as described in any one of claims 1 to 9.

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