Battery pack case, battery pack, and vehicle

Abstract

The present disclosure relates to a battery pack box, a battery pack and a vehicle, the battery pack box comprises a frame beam, a support beam and a pressing strip, the support beam is connected with the frame beam, the support beam is located in the frame beam, and both sides of the support beam are used for arranging battery monomers respectively; the pressing strip is used for being connected with the battery monomers; the support beam is provided with the pressing strip on both sides; and one end of the pressing strip is inserted and matched with the support beam. The battery pack box sets the pressing strip on both sides of the support beam, that is, the pressing strips on both sides of the support beam are not connected with each other, and are connected and matched with the support beam respectively, so that the effect of the integral pressing strip penetrating through the support beam is approximately achieved on the mechanical performance of the whole battery pack, and the problem of being unable to be sealed caused by the conventional integral pressing strip penetrating through the support beam is effectively avoided.

Description

Technical Field

[0001] This disclosure relates to the field of battery pack manufacturing technology, and more particularly to a battery pack housing, a battery pack, and a vehicle. Background Technology

[0002] In related technologies, the pressure strip in the battery pack penetrates through the beam and connects to it. The pressure strip penetrating through the beam creates gaps, resulting in a lack of sealing. Utility Model Content

[0003] The purpose of this disclosure is to provide a battery pack housing, a battery pack, and a vehicle to solve the problems in the aforementioned related technologies.

[0004] To achieve the above objectives, one aspect of this disclosure provides a battery pack housing, comprising: Border beam; A support beam is connected to the frame beam and is located inside the frame beam. The two sides of the support beam are respectively used to arrange battery cells. A pressure strip is used to connect to the battery cell to restrict the movement of the battery cell; The support beam has pressure strips on both sides, and one end of the pressure strip is inserted into the support beam.

[0005] The aforementioned technical solution utilizes the cooperation of the support beam and the frame beam to form a space for arranging individual battery cells. This space can accommodate the battery cells, and can be configured in multiple ways depending on the arrangement of the support beam and frame beam. This reduces mutual interference between battery cells, thereby lowering the risk of thermal propagation between cells in different spaces during thermal runaway. Pressure strips are installed on both sides of the support beam. These pressure strips are not interconnected but are individually connected to the support beam, thus achieving a near-integral pressure strip effect on the mechanical performance of the entire battery pack. This effectively avoids the sealing problems caused by conventional integrated pressure strip designs, making it suitable for situations where multiple spaces are used to arrange battery cells, allowing the pressure strips to restrict the placement of the individual cells.

[0006] In some possible implementations, one of the support beam and the pressure strip is provided with an insertion part, and the other is provided with an insertion port, wherein the insertion part is inserted into the insertion port.

[0007] This design facilitates plug-in connections and allows the battery pack to function almost like a single, integrated pressure bar running through the support beam, improving its overall mechanical performance.

[0008] In some possible implementations, the interior of the support beam is hollow, and both sides of the support beam are provided with insertion ports, with one end of the pressure strip located on both sides of the support beam being inserted into the corresponding insertion ports; The support beam is provided with a blocking part, which is connected to the inner wall of the support beam. At least part of the blocking part is disposed between the insertion ports on both sides of the support beam to block and isolate the insertion ports on both sides of the support beam.

[0009] This configuration creates a seal between battery cells in different locations, preventing mutual interference between them and reducing the risk of thermal spread between them during thermal runaway.

[0010] In some possible implementations, the blocking part includes a baffle and a support plate, the support plate being connected to the inner wall of the support beam, the baffle being angled relative to the support plate, and both sides of the baffle facing the insertion ports located on both sides of the support beam. Wherein, the baffle is connected to the inner wall of the support plate and the support beam; or, The baffle is connected to the support plate.

[0011] This setup facilitates the creation of a barrier and ensures a stable connection.

[0012] In some possible implementations, the support beam has two opposing sidewalls, and the insertion port is disposed on the sidewall and spaced from the edge of the sidewall, such that the edge of the insertion port is annular and surrounds the pressure strip around the axis of the pressure strip.

[0013] This design ensures that the circumferential edge of the insertion port is closed, and when the insertion part is inserted into the insertion port, the edge of the insertion port surrounds the pressure strip, improving the sealing performance.

[0014] In some possible implementations, the battery pack housing further includes a seal connected to both the pressure strip and the support beam, the seal being used to seal the gap between the pressure strip and the support beam.

[0015] This design allows for the sealing of the gap between the pressure strip and the support beam, preventing liquid penetration.

[0016] In some possible implementations, the seal is configured as an annular structure, the seal is fitted onto the pressure strip, and the inner annular wall of the seal is in contact with the pressure strip.

[0017] This design creates a ring-shaped seal, ensuring a tight seal.

[0018] In some possible implementations, the seal is provided with a snap-fit ​​portion that engages with the edge of the insertion port, such that a portion of the seal is disposed within the insertion port.

[0019] This design facilitates the connection between the seal and the support beam, ensuring connection stability and thus guaranteeing a tight seal.

[0020] In some possible implementations, the support beam is configured as a middle beam, and the space between the two sides of the middle beam and the corresponding frame beam is used to arrange the battery cells; The number of pressure strips is multiple, and the multiple pressure strips are spaced apart along the length direction of the intermediate beam.

[0021] This setup allows for the creation of multiple deployment spaces, each for a separate battery cell.

[0022] A second aspect of this disclosure also provides a battery pack, including the battery pack housing described above.

[0023] The above technical solution achieves a mechanical performance similar to that of an integrated pressure strip penetrating the support beam, effectively avoiding the sealing problems caused by conventional integrated pressure strip penetrating the support beam.

[0024] A third aspect of this disclosure also provides a vehicle that includes the aforementioned battery pack housing, or that includes the aforementioned battery pack.

[0025] The above technical solution achieves a mechanical performance similar to that of an integrated pressure strip penetrating the support beam, effectively avoiding the sealing problems caused by conventional integrated pressure strip penetrating the support beam.

[0026] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0027] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is an exploded view of the connection method between the pressure strip and the support beam according to one embodiment of this disclosure.

[0028] Figure 2 This is a structural schematic diagram of the connection method between the pressure strip and the support beam according to one embodiment of the present disclosure.

[0029] Figure 3 This is a structural schematic diagram of the distribution of the pressure strip and support beam according to one embodiment of the present disclosure.

[0030] Figure 4 This is a schematic diagram illustrating the relationship between the pressure strip and the battery cell in one embodiment of this disclosure.

[0031] Figure 5 This is a cross-sectional view of the connection method between the pressure strip and the support beam according to one embodiment of this disclosure.

[0032] Figure 6 This is one embodiment of the present disclosure. Figure 5 An enlarged diagram of position A.

[0033] Explanation of reference numerals in the attached figures 1. Support beam; 11. Insertion port; 2. Side frame beam; 3. Pressure strip; 31. Insertion part; 4. Battery cells; 5. Blocking part; 51. Baffle; 52. Support plate; 6. Sealing element; 61. Snap-fit ​​part. Detailed Implementation

[0034] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0035] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "left," and "right" are generally used to define the orientation of the accompanying drawings, and "inner" and "outer" refer to the inner and outer parts of the relevant components. Furthermore, terms such as "first" and "second" are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0036] In the description of this disclosure, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can be 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 disclosure according to the specific circumstances.

[0037] In order to ensure the support performance of the battery cells, the battery pack box structure will be equipped with multiple beam structures. At the same time, in order to keep the position of the battery cells in place and prevent them from moving, pressure strips will be set to restrict the battery cells. The pressure strips will be connected to the beams.

[0038] In related technologies, the pressure strip in the battery pack penetrates through the beam and connects to it. The pressure strip penetrating through the beam creates gaps, resulting in a lack of sealing.

[0039] Therefore, such as Figures 1-6 As shown, one aspect of this disclosure provides a battery pack housing, including a side frame beam 2, a support beam 1, and a pressure strip 3; Support beam 1 is connected to frame beam 2, and is located inside frame beam 2. Battery cells 4 are arranged on both sides of support beam 1. It can be understood that support beam 1 plays a supporting role, which can improve the overall stability of the battery pack. Battery cells 4 are located on the side of support beam 1. Support beam 1 can limit the position of battery cells 4, ensuring that battery cells 4 are arranged according to the design.

[0040] The pressure strip 3 is used to connect with the battery cell 4 to restrict the movement of the battery cell 4. Specifically, the pressure strip 3 can press the battery cell 4 tightly, thereby restricting the movement of the battery cell 4.

[0041] The support beam 1 has pressure strips 3 on both sides, and one end of the pressure strip 3 is inserted into the support beam 1.

[0042] In the above technical solution, the cooperation between the support beam 1 and the frame beam 2 forms a space for arranging the battery cells 4, allowing the battery cells 4 to be accommodated. The arrangement of the space can be customized according to the configuration of the support beam 1 and the frame beam 2, resulting in multiple spaces for arranging the battery cells 4 separately. This reduces mutual interference between the battery cells 4, thereby lowering the risk of thermal propagation between battery cells 4 in different spaces during thermal runaway. Pressure strips 3 are provided on both sides of the support beam 1. These pressure strips 3 are not connected to each other, but are connected and cooperate with the support beam 1 respectively. This achieves a near-integral pressure strip effect on the mechanical performance of the entire battery pack, effectively avoiding the sealing problems caused by conventional integrated pressure strips penetrating the support beam 1. This solution is suitable for situations where multiple spaces are used to arrange the battery cells 4 separately, where the pressure strips 3 restrict the battery cells 4.

[0043] Optionally, in one embodiment of this disclosure, one of the support beam 1 and the pressure strip 3 is provided with an insertion part 31, and the other is provided with an insertion port 11, with the insertion part 31 inserted into the insertion port 11. The cooperation between the insertion part 31 and the insertion port 11 facilitates a plug-in connection, achieving an effect similar to an integral pressure strip penetrating the support beam in terms of the overall mechanical performance of the battery pack.

[0044] Optionally, in one embodiment of this disclosure, the support beam 1 is provided with an insertion port 11, and one end of the pressure strip 3 is provided as an insertion part 31 and inserted into the insertion port 11.

[0045] In this design, an insertion port 11 can be directly provided on the support beam 1, which is convenient to manufacture and low in cost. One end of the pressure strip 3 is set as the insertion part 31, eliminating the need for additional related structures. The connection can be achieved simply by inserting one end of the pressure strip 3 directly into the insertion port 11, making the plug-in fit more convenient while ensuring the connection strength between the pressure strip 3 and the support beam 1. Optionally, in some examples, the insertion port 11 is located on the side of the support beam 1, with one end of the pressure strip 3 facing the side of the support beam 1 and inserted into the insertion port 11, thereby allowing the pressure strip 3 to be set at an angle to the support beam 1.

[0046] Optionally, in another embodiment of this disclosure, the support beam 1 is provided with an insertion part 31, and one end of the pressure strip 3 is provided as an insertion port 11. The insertion part 31 may be a protrusion on the support beam 1, and the insertion port 11 may be an open end of one end of the pressure strip 3, which can also facilitate the insertion and engagement of the support beam 1 and the pressure strip 3.

[0047] Optionally, in one embodiment of this disclosure, the support beam 1 is hollow inside, and insertion ports 11 are provided on both sides of the support beam 1. One end of the pressure strips 3 located on both sides of the support beam 1 is inserted into the corresponding insertion ports 11. Thus, the pressure strips 3 located on both sides of the support beam 1 can be inserted and engaged with the two sides of the support beam 1 respectively to achieve connection and fixation. The hollow interior of the support beam 1 is designed to reduce the weight of the support beam 1 and ensure lightweight requirements.

[0048] To ensure the stability and safety of the battery pack, the arrangement spaces on both sides of the support beam 1 need to be isolated so that the battery cells 4 on both sides of the support beam 1 do not interfere with each other. In other words, it is necessary to prevent thermal runaway of one battery cell 4 from affecting the battery cell 4 on the other side. To this end, optionally, in one embodiment of this disclosure, a blocking part 5 is provided inside the support beam 1. The blocking part 5 is connected to the inner wall of the support beam 1, and at least a portion of the blocking part 5 is disposed between the insertion ports 11 on both sides of the support beam 1 to block and isolate the insertion ports 11 on both sides of the support beam 1. The blocking part 5 can form a sealing effect between the battery cells in different arrangement spaces, thereby preventing the liquid from thermal runaway of one battery cell 4 from flowing to the other side through the insertion port 11 of the support beam 1 and affecting the battery cell 4 on the other side. This reduces the risk of thermal spread between battery cells 4 in different arrangement spaces during thermal runaway.

[0049] It is understandable that the blocking part 5 is located inside the support beam 1, between the insertion ports 11 on both sides of the support beam 1, blocking and isolating the insertion ports 11 on both sides of the support beam 1, that is, the insertion ports 11 on both sides of the support beam 1 will not be connected.

[0050] Optionally, in one embodiment of this disclosure, the blocking part 5 includes a baffle 51 and a support plate 52. The support plate 52 is connected to the inner wall of the support beam 1. The baffle 51 and the support plate 52 are set at an angle, and the two sides of the baffle 51 face the insertion ports 11 located on both sides of the support beam 1.

[0051] The baffle 51 serves to block and separate the insertion ports 11 on both sides of the support beam 1, preventing them from connecting. The support plate 52 supports and fixes the baffle 51, allowing it to be positioned between the insertion ports 11 on both sides of the support beam 1. A gap is provided between the two sides of the baffle 51 and the corresponding insertion port 11, allowing one end of the pressure strip 3 to extend into it and remain within the support beam 1, maintaining the connection.

[0052] The circumferential edge of the support plate 52 is connected to the inner wall of the support beam 1, ensuring connection strength and providing a sealing effect. It should be noted that the baffle 51, support plate 52, and the inner wall of the support beam 1 can cooperate to form a barrier space. This barrier space is a closed space; that is, even if liquid enters the barrier space through the insertion port 11, it will not seep out to other locations, ensuring a tight seal. The barrier space is connected to the insertion port 11, and one end of the pressure strip 3 can be inserted into the space through the insertion port 11.

[0053] Optionally, in some examples, the baffle 51 is connected to the inner wall of the support plate 52 and the support beam 1. That is, the baffle 51 is connected to both the support plate 52 and the inner wall of the support beam 1, and the support plate 52 and the support beam 1 together support and fix the baffle 51, so that the baffle 51 can play a blocking and partitioning role and can maintain a distance from the insertion port 11.

[0054] Alternatively, in some other examples, the baffle 51 is connected to the support plate 52. That is, the baffle 51 is connected to the support plate 52 but not to the inner wall of the support beam 1. The support plate 52 supports and fixes the baffle 51, so that the baffle 51 can block and separate, and maintain a distance from the insertion port 11.

[0055] Optionally, in another embodiment of this disclosure, the blocking part 5 is configured as a cover, which is disposed inside the support beam 1. One end of the cover has a circumferential edge connected to the inner wall of the support beam 1, and the cover covers the insertion port 11. Each insertion port 11 is provided with a corresponding cover to achieve a closed enclosure, thereby blocking and isolating the insertion port 11 without affecting the insertion of the pressure strip 3.

[0056] Optionally, in one embodiment of this disclosure, the support beam 1 has two opposing sidewalls, and the insertion port 11 is disposed on the sidewall and spaced apart from the edge of the sidewall, such that the edge of the insertion port 11 is annular and surrounds the pressure strip 3 around its axis. This arrangement makes the circumferential edge of the insertion port 11 closed, and when the insertion part 31 is inserted into the insertion port 11, the edge of the insertion port 11 surrounds the pressure strip 3, improving sealing. It is understood that the pressure strip 3 is located on one side of the sidewall of the support beam 1, and the circumferential edge of the insertion port 11 is not broken, thereby improving the sealing between the insertion port 11 and the pressure strip 3.

[0057] Optionally, in one embodiment of this disclosure, the battery pack housing further includes a sealing element 6, which is connected to both the pressure strip 3 and the support beam 1. The sealing element 6 is used to seal the gap between the pressure strip 3 and the support beam 1. The sealing element 6 achieves a seal between the pressure strip 3 and the support beam 1, preventing liquid from seeping into the insertion port 11. Thus, the sealing element 6 provides a primary sealing effect, and the blocking part 5 provides a secondary sealing effect, achieving a double seal. Furthermore, the sealing element 6 can improve the tightness of the connection between the pressure strip 3 and the support beam 1, and can absorb assembly tolerances between the pressure strip 3 and the insertion port 11, thereby improving connection stability.

[0058] Optionally, in some examples, the seal 6 is configured as an annular structure, the seal 6 is sleeved on the pressure strip 3, and the inner annular wall of the seal 6 is in contact with the pressure strip 3.

[0059] The sealing element 6 is fitted onto the pressure strip 3 and fits tightly against it, ensuring there are no gaps between them. Simultaneously, when one end of the pressure strip 3 is inserted into the insertion port 11, the sealing element 6 creates a ring-shaped seal, guaranteeing a tight seal. In some examples, the sealing element 6 may be made of rubber.

[0060] Optionally, in one embodiment of this disclosure, the sealing member 6 is provided with a snap-fit ​​portion 61, which snaps against the edge of the insertion port 11, so that a portion of the sealing member 6 is disposed within the insertion port 11. By snapping the snap-fit ​​portion 61 against the edge of the insertion port 11, the sealing member 6 can be fixedly disposed in the position of the insertion port 11. Thus, when the pressure strip 3 extends into the insertion port 11, the sealing member 6 is entirely between the pressure strip 3 and the circumferential edge of the insertion port 11, ensuring a tight seal. Simultaneously, the sealing member 6 can also limit the movement of the pressure strip 3, improving the stability of the insertion fit between the pressure strip 3 and the support beam 1.

[0061] In some examples, the snap-fit ​​portion 61 is configured as a groove formed on the outer annular wall of the seal 6, the groove being engaged with the circumferential edge of the insertion port 11 to achieve snap-fit ​​fixation. In other examples, the snap-fit ​​portion 61 is configured as an annular protrusion of the seal 6 facing the insertion port 11, the annular protrusion engaging into the insertion port 11.

[0062] Optionally, in one embodiment of this disclosure, the support beam 1 is configured as a central beam, and the space between the central beam and the corresponding side beam 2 is used for arranging battery cells 4. That is, the central beam is a spacer beam, serving to divide the space for arranging battery cells 4 into multiple arrangement spaces, allowing for the arrangement of battery cells 4 as needed. It should be noted that the number of central beams can be set as needed, and can be divided into two arrangement spaces or more. The central beam can be integrally formed with the side beam 2, or it can be connected by welding, gluing, or fasteners. The central beam can be a horizontal beam or a vertical beam, and the side beam 2 can be a ring structure, with the battery cells 4 arranged within the area enclosed by the side beam 2.

[0063] Optionally, in one embodiment of this disclosure, there are multiple pressure strips 3, which are spaced apart along the length of the intermediate beam. Multiple pressure strips 3 can individually restrict the movement of multiple rows or columns of battery cells 4, preventing the battery cells 4 from moving.

[0064] A second aspect of this disclosure also provides a battery pack, including the battery pack housing described above. The battery pack further includes individual battery cells 4, which are disposed within the battery pack housing.

[0065] A third aspect of this disclosure also provides a vehicle that includes the aforementioned battery pack housing, or that includes the aforementioned battery pack.

[0066] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0067] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0068] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. A battery pack housing, characterized in that, include: Border beam; A support beam is connected to the frame beam and is located inside the frame beam. The two sides of the support beam are respectively used to arrange battery cells. A pressure strip is used to connect to the battery cell to restrict the movement of the battery cell; The support beam has pressure strips on both sides, and one end of the pressure strip is inserted into the support beam.

2. The battery pack housing according to claim 1, characterized in that, One of the support beam and the pressure strip is provided with an insertion part, and the other is provided with an insertion port, wherein the insertion part is inserted into the insertion port.

3. The battery pack housing according to claim 2, characterized in that, The interior of the support beam is hollow, and there are insertion ports on both sides of the support beam. One end of the pressure strip located on both sides of the support beam is inserted into the corresponding insertion port. The support beam is provided with a blocking part, which is connected to the inner wall of the support beam. At least part of the blocking part is disposed between the insertion ports on both sides of the support beam to block and isolate the insertion ports on both sides of the support beam.

4. The battery pack housing according to claim 3, characterized in that, The blocking part includes a baffle and a support plate. The support plate is connected to the inner wall of the support beam. The baffle is set at an angle to the support plate. The two sides of the baffle face the insertion ports located on both sides of the support beam. Wherein, the baffle is connected to the inner wall of the support plate and the support beam; or, The baffle is connected to the support plate.

5. The battery pack housing according to claim 2, characterized in that, The support beam has two opposing sidewalls, and the insertion port is disposed on the sidewall and spaced apart from the edge of the sidewall, so that the edge of the insertion port is annular and surrounds the pressure strip around the axis of the pressure strip.

6. The battery pack housing according to claim 2, characterized in that, The battery pack housing also includes a sealing element, which is connected to the pressure strip and the support beam respectively, and is used to seal the gap between the pressure strip and the support beam.

7. The battery pack housing according to claim 6, characterized in that, The sealing element is configured as a ring structure, the sealing element is sleeved on the pressure strip, and the inner ring wall of the sealing element is in contact with the pressure strip.

8. The battery pack housing according to claim 6, characterized in that, The sealing element is provided with a snap-fit ​​portion, which snaps into the edge of the insertion port so that a portion of the sealing element is disposed within the insertion port.

9. The battery pack housing according to any one of claims 1-8, characterized in that, The support beam is set as a middle beam, and the space between the two sides of the middle beam and the corresponding frame beam is used to arrange the battery cells. The number of pressure strips is multiple, and the multiple pressure strips are spaced apart along the length direction of the intermediate beam.

10. A battery pack, characterized in that, Includes the battery pack housing as described in any one of claims 1-9.

11. A vehicle, characterized in that, It includes the battery pack housing as described in any one of claims 1-9, or the battery pack as described in claim 10.

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