Box assembly, battery pack and electric device

Abstract

The utility model provides a kind of box assembly, battery pack and electric equipment, wherein, box assembly, comprising: box, for placing battery in box;Heat exchange part, it is set in the bottom of box, heat exchange part has by the first protruding portion of the outside of box from the inside of box direction protruding to the outside of box, first protruding portion is provided with heat exchange mouth;Protective part, it is set below heat exchange part, protective part has by the second protruding portion of the outside of box from the inside of box direction protruding to the outside of box, second protruding portion is supported below first protruding portion;Reinforcing part, it is set above first protruding portion, and it is connected with second protruding portion, wherein, first protruding portion is clamped between reinforcing part and second protruding portion.The technical scheme of the application effectively solves the problem that the protruding portion is prone to deformation in the related art.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and more specifically, to a housing assembly, a battery pack, and an electrical device. Background Technology

[0002] In related technologies, the housing is used to house batteries. A heat exchanger is located at the bottom of the housing and has a protrusion extending from the inside to the outside of the housing. The protrusion has a heat exchange port for connecting to external heat exchange pipelines.

[0003] However, because the protrusion extends beyond the outer side of the box, the structural strength at the contact point between the protrusion and the box is low, and the protrusion is prone to deformation. Utility Model Content

[0004] The main objective of this invention is to provide a housing assembly, a battery pack, and an electrical device to solve the problem of deformation of protrusions in related technologies.

[0005] To achieve the above objectives, according to one aspect of the present invention, a housing assembly is provided, comprising: a housing for housing a battery; a heat exchange member disposed at the bottom of the housing, the heat exchange member having a first protrusion extending from the inside of the housing to the outside of the housing, the first protrusion having a heat exchange port; a protective member disposed below the heat exchange member, the protective member having a second protrusion extending from the inside of the housing to the outside of the housing, the second protrusion being supported below the first protrusion; and a reinforcing member disposed above the first protrusion and connected to the second protrusion, wherein the first protrusion is sandwiched between the reinforcing member and the second protrusion.

[0006] According to another aspect of the present invention, a battery pack is provided, including a housing assembly and a battery disposed within the housing assembly, wherein the housing assembly is the aforementioned housing assembly.

[0007] According to another aspect of the present invention, an electrical device is provided, including a battery pack, wherein the battery pack is the aforementioned battery pack.

[0008] The casing assembly, utilizing the technical solution of this utility model, includes: a casing, a heat exchanger, a protective component, and a reinforcing component. The casing houses the battery. The heat exchanger is located at the bottom of the casing and has a first protrusion extending from the inside to the outside of the casing, with a heat exchange port on the first protrusion. The protective component is located below the heat exchanger and has a second protrusion extending from the inside to the outside of the casing, supported below the first protrusion. The reinforcing component is located above the first protrusion and connected to the second protrusion, with the first protrusion sandwiched between the reinforcing component and the second protrusion. This sandwiching of the first protrusion between the reinforcing component and the second protrusion improves the overall structural strength of the first protrusion, effectively enhancing the structural strength at the contact point between the first protrusion and the casing, preventing deformation of the first protrusion, thereby improving the strength of the heat exchanger, ensuring its heat exchange effect, and reducing safety risks. Therefore, the technical solution of this application effectively solves the problem that protrusions in related technologies are prone to deformation. Attached Figure Description

[0009] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an undue limitation of the present invention. In the drawings:

[0010] Figure 1 A partial perspective view of an embodiment of the housing assembly according to the present invention is shown;

[0011] Figure 2 It shows Figure 1 An enlarged schematic diagram of point A of the housing assembly;

[0012] Figure 3 It shows Figure 1 A top view of point A of the housing assembly;

[0013] Figure 4 It shows Figure 1 A longitudinal sectional view at point A of the housing assembly;

[0014] Figure 5 A partial perspective view of an embodiment of the housing assembly according to the present invention is shown.

[0015] Figure 6 It shows Figure 5 An enlarged schematic diagram of point B of the housing assembly;

[0016] Figure 7 It shows Figure 5 A bottom view of the housing assembly at point B after the protective components have been removed.

[0017] The above figures include the following reference numerals:

[0018] 10. Box body;

[0019] 20. Heat exchanger; 21. First protrusion; 211. Clearance notch; 22. Heat exchange port; 221. Inlet; 222. Outlet; 23. Heat exchanger body;

[0020] 30. Protective component; 31. Second protrusion;

[0021] 40. Reinforcing member; 401. Opening; 41. Reinforcing plate; 42. Cavity; 43. First reinforcing section; 44. Second reinforcing section; 45. Third reinforcing section; 46. Outward flange;

[0022] 51. First fastener; 52. Second fastener; 521. Fastener one; 522. Fastener two;

[0023] 60. Seal; 61. Buffer space; 62. Protruding section. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. The following description of at least one exemplary embodiment is merely illustrative and is in no way intended to limit the present utility model or its application or use. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0025] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0026] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this invention. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings.

[0027] According to one aspect of this application, a housing assembly is provided, such as Figures 1 to 4 As shown, an embodiment of the housing assembly includes: a housing 10, a heat exchanger 20, a protective member 30, and a reinforcing member 40. The housing 10 houses the battery. The heat exchanger 20 is disposed at the bottom of the housing 10 and has a first protrusion 21 extending from the inside to the outside of the housing 10, protruding from the outer side of the housing 10. A heat exchange port 22 is provided on the first protrusion 21. The protective member 30 is disposed below the heat exchanger 20 and has a second protrusion 31 extending from the inside to the outside of the housing 10, protruding from the outer side of the housing 10. The second protrusion 31 is supported below the first protrusion 21. The reinforcing member 40 is disposed above the first protrusion 21 and connected to the second protrusion 31, wherein the first protrusion 21 is sandwiched between the reinforcing member 40 and the second protrusion 31.

[0028] The technical solution of the embodiment using the housing assembly, because the first protrusion 21 is sandwiched between the reinforcing member 40 and the second protrusion 31, can improve the overall structural strength of the first protrusion 21, effectively improve the structural strength at the contact point between the first protrusion 21 and the housing 10, prevent the first protrusion 21 from deforming, thereby improving the strength of the heat exchange component, ensuring the heat exchange effect of the heat exchange component, and reducing safety risks. Therefore, the technical solution of this application effectively solves the problem of protrusions being prone to deformation in related technologies.

[0029] The heat exchanger 20 mentioned above is preferably a heat exchange plate, which can be used as a component to regulate the battery temperature. The heat exchange plate is made of the following material / composed form: A heat exchange channel is provided inside the heat exchange plate. This channel is used to circulate the heat exchange medium, which can be a gas (air), a liquid (such as water, alcohol, refrigerant, oil, etc.), or a solid (such as thermally conductive adhesive, thermally conductive solder paste, etc.). The heat exchange channel has an inlet and an outlet for the heat exchange medium. The heat exchange medium can enter the heat exchange channel through the inlet, exchange heat with the battery cells, and then exit through the outlet, thus achieving heat exchange with the battery cells.

[0030] like Figures 1 to 4 As shown, the reinforcing member 40 is connected to the second protrusion 31 via the first fastener 51. This connection ensures that the reinforcing member 40, while reinforcing the first protrusion 21, forms a stable connection with the protective member 30, improving the overall structural stability and preventing structural loosening due to external impacts.

[0031] like Figures 1 to 4 As shown, there are multiple first fasteners 51, which are located on both sides of the first protrusion 21. The multiple first fasteners 51 are located on both sides of the first protrusion 21 along the width direction X of the housing 10. By increasing the number of connection points, the first protrusion 21 is more securely fixed, and the structural strength of the first protrusion 21 is further improved.

[0032] like Figures 1 to 4 As shown, one side of the reinforcing member 40 is welded to the outer side of the housing 10, and the other side of the reinforcing member 40 is connected to the second protrusion 31 via the first fastener 51. The welding of one side of the reinforcing member 40 to the outer side of the housing 10 forms a rigid connection, while the connection of the other side to the second protrusion 31 via the first fastener 51 forms an elastic connection. This ensures the overall structural strength while allowing for a certain degree of deformation absorption, thus improving the system's resistance to impact.

[0033] like Figures 1 to 4 As shown, the first protrusion 21 is provided with a clearance notch 211 to avoid the first fastener 51. This makes the connection between the reinforcing member 40 and the first fastener 51 more flexible, avoids installation difficulties caused by interference between the fastener and the protrusion, and improves the convenience of assembly.

[0034] like Figures 1 to 4As shown, the reinforcing member 40 includes a reinforcing plate 41, wherein the thickness T1mm of the reinforcing plate 41 satisfies the following condition: 0.6mm ≤ T1mm ≤ 3mm. The thickness T1mm range of the reinforcing plate 41 is set to prevent T1mm from exceeding 3mm, which would make the reinforcing plate too heavy and increase the weight of the battery pack; and to prevent T1mm from being less than 0.6mm, which would make the reinforcing plate too thin and lack sufficient strength, resulting in poor reinforcement of the heat exchange components. This ensures sufficient strength while avoiding excessive material usage, balancing structural optimization and cost control.

[0035] The thickness T1mm of the reinforcing plate 41 is preferably 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2mm, 1.3mm, 1.4mm, 1.5mm, 1.6mm, 1.7mm, 1.8mm, 1.9mm, 2.0mm, 2.1mm, 2.2mm, 2.3mm, 2.4mm, 2.5mm, 2.6mm, 2.7mm, 2.8mm, 2.9mm, or 3.0mm.

[0036] like Figures 1 to 4 As shown, a cavity 42 is provided inside the reinforcing member 40. The cavity 42 reduces the weight of the reinforcing member 40 and also enhances its rigidity, achieving the dual effects of lightweight and high strength.

[0037] like Figures 1 to 4 As shown, the reinforcing member 40 includes a first reinforcing section 43 spaced apart from the outer side of the housing 10, a second reinforcing section 44 connected to the first end of the first reinforcing section 43 and the outer side of the housing 10, and a third reinforcing section 45 connected to the second end of the first reinforcing section 43 and the outer side of the housing 10. A cavity 42 is disposed inside the first reinforcing section 43, the second reinforcing section 44, and the third reinforcing section 45. The arrangement of the first reinforcing section 43, the second reinforcing section 44, and the third reinforcing section 45 creates a more uniform stress distribution, enabling the reinforcing member 40 to better disperse force and reduce local stress concentration when subjected to external impacts.

[0038] like Figures 1 to 4 As shown, the first reinforcing section 43, the second reinforcing section 44, and the third reinforcing section 45 are arranged around the outside of the heat exchange port 22. The first reinforcing section 43, the second reinforcing section 44, and the third reinforcing section 45 provide protection for the heat exchange port 22.

[0039] like Figures 1 to 4 As shown, the cavity wall of cavity 42 is provided with transverse reinforcing ribs and / or longitudinal reinforcing ribs. The provision of transverse reinforcing ribs and / or longitudinal reinforcing ribs further enhances the structural stability of cavity 42, prevents cavity 42 from deforming under external pressure, and ensures effective support of reinforcing member 40 under various working conditions.

[0040] like Figures 1 to 4 As shown, in the height direction Z of the housing 10, the ratio of the height H1mm of the cavity 42 to the height H2mm of the reinforcing member 40 satisfies: 0.75≤H1 / H2≤0.95. This range of ratio is set to prevent H1 / H2 from being less than 0.75, which would result in excessive weight of the reinforcing member and affect the overall weight of the housing and battery pack; and to prevent H1 / H2 from being greater than 0.95, which would lead to poor strength of the reinforcing member and poor reinforcement effect on the heat exchange components. This, in turn, helps to optimize the internal structure of the reinforcing member 40 and achieve a better strength-to-weight ratio.

[0041] The ratio of the height H1mm of the cavity 42 to the height H2mm of the reinforcing member 40 is preferably 0.75 or 0.76 or 0.77 or 0.78 or 0.79 or 0.80 or 0.81 or 0.82 or 0.83 or 0.84 or 0.85 or 0.86 or 0.87 or 0.88 or 0.89 or 0.90 or 0.91 or 0.92 or 0.93 or 0.94 or 0.95.

[0042] The height H1mm of cavity 42 must satisfy the following condition: 8mm≤H1mm≤35mm. This is to prevent H1mm from being less than 8mm, which would make the reinforcing component too heavy and affect the overall weight of the casing and battery pack, and to prevent H1mm from being greater than 35mm, which would make the reinforcing component weak and affect the reinforcement effect of the heat exchange component.

[0043] The height H1mm of cavity 42 is preferably 8mm or 9mm or 10mm or 11mm or 12mm or 13mm or 14mm or 15mm or 16mm or 17mm or 18mm or 19mm or 20mm or 21mm or 22mm or 23mm or 24mm or 25mm or 26mm or 27mm or 28mm or 29mm or 30mm or 31mm or 32mm or 33mm or 34mm or 35mm.

[0044] The height H2mm of the reinforcing member 40mm must meet the following condition: 10mm≤H2mm≤40mm. This prevents the reinforcing member from being too heavy if H2mm is less than 10mm, which would affect the overall weight of the casing and battery pack. It also prevents the reinforcing member from being too weak if H2mm is greater than 40mm, which would affect the reinforcement effect of the heat exchanger.

[0045] The height H2mm of the reinforcing member 40 is preferably 10mm or 11mm or 12mm or 13mm or 14mm or 15mm or 16mm or 17mm or 18mm or 19mm or 20mm or 21mm or 22mm or 23mm or 24mm or 25mm or 26mm or 27mm or 28mm or 29mm or 30mm or 31mm or 32mm or 33mm or 34mm or 35mm or 36mm or 37mm or 38mm or 39mm or 40mm.

[0046] like Figures 1 to 4 As shown, the reinforcing member 40 has an outward flange 46 on the side facing the outer side of the housing 10, and the outward flange 46 is welded to the outer side of the housing 10. The above structure can enhance the connection strength between the reinforcing member 40 and the housing 10, and at the same time help to improve the overall strength of the reinforcing member 40.

[0047] like Figures 1 to 4 As shown, in the height direction Z of the housing 10, the height H3mm of the outer flange 46 satisfies: 4mm ≤ H3mm ≤ 20mm. The size range of the outer flange 46 is set to effectively meet the connection strength requirements. This prevents H3mm from being less than 4mm, resulting in a small connection area for the outer flange 46 and poor connection strength, which would affect the reinforcing effect of the reinforcement on the heat exchanger. Conversely, it prevents H3mm from being greater than 20mm, resulting in a large connection area for the outer flange 46 and excessive weight for the reinforcement.

[0048] The height H3mm of the outer flange 46 is preferably 4mm or 5mm or 6mm or 7mm or 8mm or 9mm or 10mm or 11mm or 12mm or 13mm or 14mm or 15mm or 16mm or 17mm or 18mm or 19mm or 20mm.

[0049] like Figures 1 to 4 As shown, the reinforcing member 40 is provided with an opening 401, and the heat exchange port 22 includes an inlet 221 and an outlet 222 spaced apart, with the opening 401 covering the inlet 221 and the outlet 222. This provides a direct access point for the heat exchange pipeline, simplifying the assembly process of the heat exchange pipeline.

[0050] like Figures 1 to 4 As shown, in the width direction of the housing 10, the first dimension of the opening 401 is L1mm, and the second dimension of the reinforcing member 40 is L2mm. In the length direction Y of the housing 10, the third dimension of the opening 401 is L3mm, and the fourth dimension of the reinforcing member 40 is L4mm. The ratio of the first dimension L1mm to the second dimension L2mm satisfies: 0.5≤L1 / L2≤0.85, and the ratio of the third dimension L5mm to the fourth dimension L6mm satisfies: 0.6≤L3 / L4≤0.85. This design prevents L1 / L2 from being less than 0.5 and L3 / L4 from being less than 0.6, which would affect the installation of the heat exchange port and other heat exchange components, and affect the heat exchange function of the heat exchange components. It also prevents L1 / L2 from being greater than 0.85 and L3 / L4 from being greater than 0.85, which would result in poor strength of the reinforcing member. Therefore, the above-mentioned structure optimizes the structural weight of the reinforcing member 40.

[0051] The aforementioned first dimension L1mm ranges from 72mm to 100mm; the second dimension L2mm ranges from 86mm to 194mm; the third dimension L3mm ranges from 20mm to 50mm; and the fourth dimension L4mm ranges from 26mm to 60mm. This prevents L1mm from being less than 72mm, L2mm from being less than 86mm, L3mm from being less than 20mm, and L4mm from being less than 26mm, which would affect the installation of the heat exchange port and other heat exchange components, and thus affect the heat exchange function of the heat exchange components; and prevents L1mm from being greater than 100mm, L2mm from being greater than 194mm, L3mm from being greater than 50mm, and L4mm from being greater than 60mm, which would result in poor strength of the reinforcing components.

[0052] The ratio of the first dimension L1mm to the second dimension L2mm is preferably 0.5 or 0.51 or 0.52 or 0.53 or 0.54 or 0.55 or 0.56 or 0.57 or 0.58 or 0.59 or 0.6 or 0.61 or 0.62 or 0.63 or 0.64 or 0.65 or 0.66 or 0.67 or 0.68 or 0.69 or 0.7 or 0.71 or 0.72 or 0.73 or 0.74 or 0.75 or 0.76 or 0.77 or 0.78 or 0.79 or 0.8 or 0.81 or 0.82 or 0.83 or 0.84 or 0.85.

[0053] The ratio of the third dimension L5mm to the fourth dimension L6mm is 0.6 or 0.61 or 0.62 or 0.63 or 0.64 or 0.65 or 0.66 or 0.67 or 0.68 or 0.69 or 0.7 or 0.71 or 0.72 or 0.73 or 0.74 or 0.75 or 0.76 or 0.77 or 0.78 or 0.79 or 0.8 or 0.81 or 0.82 or 0.83 or 0.84 or 0.85.

[0054] The first dimension L1mm is preferably 72mm or 73mm or 74mm or 75mm or 76mm or 77mm or 78mm or 79mm or 80mm or 81mm or 82mm or 83mm or 84mm or 85mm or 86mm or 87mm or 88mm or 89mm or 90mm or 91mm or 92mm or 93mm or 94mm or 95mm or 96mm or 97mm or 98mm or 99mm or 100mm.

[0055] The second dimension L2mm is preferably 86mm, 88mm, 90mm, 92mm, 94mm, 96mm, 98mm, 100mm, 102mm, 104mm, 106mm, 108mm, 110mm, 112mm, 114mm, 116mm, 118mm, 120mm, 122mm, 124mm, 126mm, 128mm, 130mm, 132mm, 134mm, 136mm, 138mm, or 1 40mm or 142mm or 144mm or 146mm or 148mm or 150mm or 152mm or 154mm or 156mm or 158mm or 160mm or 162mm or 164mm or 166mm or 168mm or 170mm or 172mm or 174mm or 176mm or 178mm or 180mm or 182mm or 184mm or 186mm or 188mm or 190mm or 192mm or 194mm.

[0056] The third dimension L3mm is preferably 20mm or 21mm or 22mm or 23mm or 24mm or 25mm or 26mm or 27mm or 28mm or 29mm or 30mm or 31mm or 32mm or 33mm or 34mm or 35mm or 36mm or 37mm or 38mm or 39mm or 40mm or 41mm or 42mm or 43mm or 44mm or 45mm or 46mm or 47mm or 48mm or 49mm or 50mm.

[0057] The fourth dimension L4mm is preferably 26mm or 28mm or 30mm or 32mm or 34mm or 36mm or 38mm or 40mm or 42mm or 44mm or 46mm or 48mm or 50mm or 52mm or 54mm or 56mm or 58mm or 60mm.

[0058] like Figures 4 to 7 As shown, a sealing element 60 is provided between the edge of the protective element 30 and the edge of the heat exchange element 20, and a buffer space 61 is formed between the sealing element 60, the protective element 30, and the heat exchange element 20. The sealing element 60 is located between the protective element 30 and the heat exchange element 20, forming a buffer space 61. When the protective element 30 is impacted, the buffer space 61 can absorb the external impact of the protective element 30 and protect the heat exchange element 20 from damage.

[0059] The protective component 30 is preferably a bottom protective plate.

[0060] like Figures 4 to 7 As shown, the seal 60 includes a protruding section 62 disposed between the edge of the first protrusion 21 and the edge of the second protrusion 31. The protruding section 62 of the seal 60 improves the airtightness of the buffer space 61 and further enhances the protective performance of the protective component 30.

[0061] like Figures 4 to 7 As shown, the heat exchanger 20 includes a heat exchanger body 23, a first protrusion 21 connected to the heat exchanger body 23, and the connection between the first protrusion 21 and the heat exchanger body 23 is connected to the housing 10 by a second fastener 52. This fastener connection method improves the connection strength and stability between the heat exchanger 20 and the housing 10.

[0062] like Figures 4 to 7 As shown, the second fastener 52 includes multiple fasteners, and the first protrusion 21 has a symmetrical structure. One of the multiple second fasteners 52 is located on the axis of symmetry C1 of the symmetrical structure. The fact that one of the second fasteners 52 is located on the axis of symmetry C1 ensures the symmetry of the connection between the heat exchanger 20 and the housing 10, which is beneficial to the distribution of balanced forces and improves the structural stability of the first protrusion 21.

[0063] like Figures 4 to 7 As shown, the first protrusion 21 has a symmetrical structure. Among the multiple second fasteners 52, the two second fasteners 52 located on both sides of the axis of symmetry C1 of the symmetrical structure are fastener one 521 and fastener two 522, respectively. In the width direction X of the housing, fastener one 521 has a fifth dimension L5mm between it and the axis of symmetry C1, and fastener two 522 has a sixth dimension L6mm between it and the axis of symmetry C1. To ensure that the distances of fastener one 521 and fastener two 522 from the axis of symmetry C1 are consistent or close, the ratio of the fifth dimension L5mm to the sixth dimension L6mm satisfies: 0.9≤L5 / L6≤1.1. The aforementioned fifth dimension L5mm and sixth dimension L6mm can ensure that the first protrusion 21 can adapt to the force requirements under different working conditions, while ensuring the reliability of the connection. In this embodiment, fastener one 521, fastener two 522, and the first fastener are all preferably screws or bolts. The aforementioned ratio of the fifth dimension L5mm to the sixth dimension L6mm is preferably 0.9, 1, or 1.1.

[0064] The range of the fifth dimension L5mm and the sixth dimension L6mm mentioned above is 35mm-85mm. This is to prevent L5mm from being less than 35mm or L6mm from being less than 35mm, resulting in excessively dense fasteners. This would lead to overly dense mounting holes (used for fastener installation) on the reinforcing and protective components, affecting the strength of the second protrusions of the reinforcing and protective components, and thus affecting the reinforcement effect on the heat exchanger. Conversely, to prevent L5mm from being greater than 85mm or L6mm from being greater than 85mm, resulting in poor installation strength between the reinforcing and protective components, which would also affect the reinforcement effect.

[0065] The fifth dimension L5mm and the sixth dimension L6mm mentioned above are preferably 35mm or 36mm or 37mm or 38mm or 39mm or 40mm or 41mm or 42mm or 43mm or 44mm or 45mm or 46mm or 47mm or 48mm or 49mm or 50mm or 51mm or 52mm or 53mm or 54mm or 55mm or 56mm or 57mm or 58mm or 59mm or 60mm or 61mm or 62mm or 63mm or 64mm or 65mm or 66mm or 67mm or 68mm or 69mm or 70mm or 71mm or 72mm or 73mm or 74mm or 75mm or 76mm or 77mm or 78mm or 79mm or 80mm or 81mm or 82mm or 83mm or 84mm or 85mm.

[0066] The heat exchanger 20 is preferably plate-shaped, but it can also be a heat exchange pipe.

[0067] According to another aspect of this utility model, a battery pack is provided, including a housing assembly and a battery disposed within the housing assembly, wherein the housing assembly is the aforementioned housing assembly. Since the aforementioned housing assembly can solve the problem of deformation of protrusions in the relevant technology, the battery pack including this housing assembly can also solve the same technical problem.

[0068] In this embodiment, the enclosure refers to a closed or semi-closed structure made of materials such as metal and plastic. It serves as the physical carrier of the battery pack, and its design and manufacturing must meet the safety, reliability, and functionality requirements of the battery pack under different usage scenarios. The enclosure provides installation space for the battery pack, BMS, cooling system, electrical connection components, etc., and through a reasonable structural design, fixes these components within the enclosure, ensuring they maintain a relatively stable position during battery pack operation and preventing damage or loosening of connections due to vibration, impact, or other factors. The enclosure can be cast from materials such as steel plates or aluminum alloys, or lightweight materials such as glass fiber reinforced composite materials or carbon fiber reinforced composite materials. The shape of the enclosure can be cylindrical, cuboid, cube, etc.

[0069] The aforementioned frame refers to the framework structure of the battery pack housing, serving a supporting, protective, and connecting function. The frame can be formed by splicing together multiple beams. The frame includes four sub-frames, which connect end-to-end to form an enclosed space. This enclosed space is sealed by a top cover and a bottom plate to form a accommodating cavity. The frame can be made of various materials, such as aluminum alloy, copper alloy, steel, and plastic. The frame can be rectangular, circular, polygonal, etc., with no specific limitations. The interior of the frame can be a solid structure or contain cavities.

[0070] The aforementioned battery pack includes a battery pack composed of multiple batteries connected in series and / or in parallel to form a battery management system (BMS), a thermal management system, an electrical connection system (high-voltage / low-voltage connectors, wiring harnesses, etc.), structural components (casing, brackets, etc.), and protective components. All of these components are placed inside a housing and sealed with a cover plate to form a complete functional unit that can directly output electrical energy.

[0071] The aforementioned batteries can be secondary or primary batteries, and can also be lithium-ion batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, or magnesium-ion batteries, etc., but this embodiment of the invention is not limited to these. Batteries can be cylindrical, flat, cuboid, or other shapes, but this embodiment of the invention is not limited to these shapes either. Batteries are generally classified into three types according to their packaging method: cylindrical batteries, square batteries, and pouch batteries, but this embodiment of the invention is not limited to these types either.

[0072] For example, a battery may include a casing, a cell, and an electrolyte, with the casing housing the cell and electrolyte. The cell also includes a separator. Batteries primarily function by the movement of metal ions between the positive and negative electrodes.

[0073] The battery cell may have terminals or other components connected to adapters, with the terminals serving as the electrical connection points. Furthermore, the battery cell typically includes a pressure relief section. In the event of excessive internal pressure (e.g., thermal runaway), this section releases substances (e.g., gases, liquids, particulate matter) from the cell's interior, reducing internal pressure and preventing rapid pressurization that could lead to dangerous accidents such as cell explosions. For example, the pressure relief section can be an explosion-proof valve or explosion-proof plate. The adapter is preferably a connecting plate, and preferably a conductive structure. Any adjacent positive and negative electrodes are separated by a diaphragm.

[0074] The positive electrode sheet includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector. The positive current collector without the positive active material layer protrudes from the positive current collector with the positive active material layer. The positive current collector without the positive active material layer serves as the positive electrode tab. Taking a lithium-ion battery as an example, the material of the positive current collector can be aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc.

[0075] The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector. The negative current collector without the negative active material layer protrudes from the negative current collector with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0076] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure. A wound cell is generally manufactured by winding continuous positive and negative electrodes and a separator, with the separator located between adjacent positive and negative electrodes. A stacked cell is manufactured by stacking positive and negative electrodes and a separator, where the positive and negative electrodes are separated by a separator, and adjacent layers of positive and / or negative electrodes within the cell are discontinuous. The stacking process includes layering or Z-shaped folding, etc. The embodiments of this application are not limited to these.

[0077] According to another aspect of this utility model, an electrical device is provided, including a battery pack, which is the battery pack described above. Since the battery pack described above can solve the problem of deformation of protrusions in the relevant technology, the electrical device including this battery pack can also solve the same technical problem.

[0078] The electrical equipment disclosed in this utility model embodiment can be, but is not limited to, vehicles, mobile phones, tablets, laptops, ships, spacecraft, electric toys, and power tools, etc. Vehicles can be fuel-powered vehicles, natural gas vehicles, new energy vehicles, or rail vehicles; new energy vehicles can be pure electric vehicles, hybrid vehicles, or range-extended vehicles, etc. Spacecraft include airplanes, rockets, space shuttles, and spacecraft, etc. Electric toys include stationary or mobile electric toys, such as game consoles, electric vehicle toys, electric ship toys, and electric airplane toys, etc. Power tools include metal cutting power tools, grinding power tools, assembly power tools, and railway power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete vibrators, and electric planers, etc. When the electrical equipment is a vehicle, the battery pack can be located at the bottom, front, or rear of the vehicle.

[0079] In the description of this utility model, it should be understood that "multiple" means a quantity of two or more. Directional terms such as "front, back, up, down, left, right," "horizontal, vertical, perpendicular, horizontal," and "top, bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used solely for the convenience of describing this utility model and simplifying the description. Unless otherwise stated, these directional terms 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 limiting the scope of protection of this utility model. The directional terms "inner" and "outer" refer to the inner or outer contours relative to the outline of each component itself.

[0080] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0081] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this utility model.

[0082] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A housing assembly, characterized in that, include: A housing (10) for housing batteries; A heat exchanger (20) is disposed at the bottom of the housing (10). The heat exchanger (20) has a first protrusion (21) protruding from the inside of the housing (10) to the outside of the housing (10) on the outer side surface of the housing (10). A heat exchange port (22) is provided on the first protrusion (21). A protective member (30) is disposed below the heat exchange member (20). The protective member (30) has a second protrusion (31) that protrudes from the inside of the housing (10) to the outside of the housing (10) on the outer side of the housing (10). The second protrusion (31) is supported below the first protrusion (21). A reinforcing member (40) is disposed above the first protrusion (21) and connected to the second protrusion (31), wherein the first protrusion (21) is sandwiched between the reinforcing member (40) and the second protrusion (31).

2. The housing assembly according to claim 1, characterized in that, The reinforcing member (40) is connected to the second protrusion (31) by a first fastener (51).

3. The housing assembly according to claim 2, characterized in that, There are multiple first fasteners (51), and the multiple first fasteners (51) are located on both sides of the first protrusion (21) along the width direction (X) of the housing (10).

4. The housing assembly according to claim 1, characterized in that, One side of the reinforcing member (40) is welded to the outer side of the housing (10), and the other side of the reinforcing member (40) is connected to the second protrusion (31) by a first fastener (51).

5. The housing assembly according to claim 2, characterized in that, The first protrusion (21) is provided with a clearance notch (211) to avoid the first fastener (51).

6. The housing assembly according to claim 1, characterized in that, The reinforcing member (40) includes a reinforcing plate (41), wherein the thickness T1mm of the reinforcing plate (41) satisfies: 0.6mm≤T1mm≤3mm.

7. The housing assembly according to claim 1, characterized in that, The reinforcing member (40) has a cavity (42).

8. The housing assembly according to claim 7, characterized in that, The reinforcing member (40) includes a first reinforcing section (43) spaced apart from the outer side of the housing (10), a second reinforcing section (44) connected to the first end of the first reinforcing section (43) and the outer side of the housing (10), and a third reinforcing section (45) connected to the second end of the first reinforcing section (43) and the outer side of the housing (10). The cavity (42) is disposed inside the first reinforcing section (43), the second reinforcing section (44), and the third reinforcing section (45).

9. The housing assembly according to claim 8, characterized in that, The first reinforcing section (43), the second reinforcing section (44) and the third reinforcing section (45) are arranged around the outside of the heat exchange port (22).

10. The housing assembly according to claim 7, characterized in that, The cavity (42) is provided with transverse reinforcing ribs and / or longitudinal reinforcing ribs on its cavity wall.

11. The housing assembly according to claim 7, characterized in that, In the height direction (Z) of the housing (10), the ratio of the height H1mm of the cavity (42) to the height H2mm of the reinforcing member (40) satisfies: 0.75≤H1 / H2≤0.

95.

12. The housing assembly according to claim 11, characterized in that, The height H1mm of the cavity (42) satisfies: 8mm≤H1mm≤35mm.

13. The housing assembly according to claim 11, characterized in that, The height H2mm of the reinforcing member (40) satisfies: 10mm≤H2mm≤40mm.

14. The housing assembly according to claim 1, characterized in that, The reinforcing member (40) has an outward flange (46) on the side facing the outer side of the housing (10), and the outward flange (46) is welded to the outer side of the housing (10).

15. The housing assembly according to claim 14, characterized in that, In the height direction (Z) of the box (10), the height H3mm of the outer flange (46) satisfies: 4mm≤H3mm≤20mm.

16. The housing assembly according to claim 14, characterized in that, The reinforcing member (40) is provided with an opening (401), and the heat exchange port (22) includes an inlet (221) and an outlet (222) arranged at intervals, with the opening (401) covering the inlet (221) and the outlet (222).

17. The housing assembly according to claim 16, characterized in that, In the width direction of the housing (10), the first dimension of the opening (401) is L1mm, and the second dimension of the reinforcing member (40) is L2mm. In the length direction (Y) of the housing (10), the third dimension of the opening (401) is L3mm, and the fourth dimension of the reinforcing member (40) is L4mm. The ratio of the first dimension L1mm to the second dimension L2mm satisfies: 0.5≤L1 / L2≤0.

85. The ratio of the third dimension L5mm to the fourth dimension L6mm satisfies: 0.6≤L3 / L4≤0.

85.

18. The housing assembly according to claim 1, characterized in that, A sealing element (60) is provided between the edge of the protective element (30) and the edge of the heat exchange element (20), and a buffer space (61) is formed between the sealing element (60), the protective element (30) and the heat exchange element (20).

19. The housing assembly according to claim 18, characterized in that, The seal (60) includes a protruding section (62) disposed between the edge of the first protrusion (21) and the edge of the second protrusion (31).

20. The housing assembly according to claim 1, characterized in that, The heat exchanger (20) includes a heat exchanger body (23), the first protrusion (21) is connected to the heat exchanger body (23), and the connection between the first protrusion (21) and the heat exchanger body (23) is connected to the housing (10) by a second fastener (52).

21. The housing assembly according to claim 20, characterized in that, The second fastener (52) includes a plurality of them, the first protrusion (21) is a symmetrical structure, and one of the plurality of second fasteners (52) is located on the axis of symmetry C1 of the symmetrical structure.

22. The housing assembly according to claim 20, characterized in that, The first protrusion (21) has a symmetrical structure. Among the multiple second fasteners (52), the two second fasteners (52) located on both sides of the axis of symmetry C1 of the symmetrical structure are fastener one (521) and fastener two (522). In the width direction (X) of the box, fastener one (521) has a fifth dimension L5mm between it and the axis of symmetry C1, and fastener two (522) has a sixth dimension L6mm between it and the axis of symmetry C1. The ratio of the fifth dimension L5mm to the sixth dimension L6mm satisfies: 0.9≤L5 / L6≤1.

1.

23. A battery pack, comprising a housing assembly and a battery disposed within the housing assembly, characterized in that, The enclosure assembly is the enclosure assembly according to any one of claims 1 to 22.

24. An electrical device, comprising a battery pack, characterized in that, The battery pack is the battery pack as described in claim 23.

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