Battery case

Abstract

Battery housing, comprising: a surrounding frame which is designed in a ring shape; a base plate connected to the surrounding frame, wherein the base plate and the surrounding frame enclose a receiving space, wherein the base plate has a heat exchanger plate and wherein the heat exchanger plate is arranged opposite the receiving space in a direction perpendicular to the base plate; a center beam having two ends in a longitudinal direction, each connected to the peripheral frame to divide the receiving space; a first thermal insulation plate arranged between the central support and the heat exchanger plate, wherein the first thermal insulation plate has a lower thermal conductivity than the heat exchanger plate; wherein the center beam has a first upper wall and a first lower wall, wherein the first upper wall and the first lower wall are both arranged parallel to the bottom plate, wherein the first lower wall is arranged towards the bottom plate, wherein the first lower wall, the first thermal insulation plate and the heat exchanger plate are firmly connected via rivet connectors, wherein in the direction perpendicular to the bottom plate, a dimension of the first thermal insulation plate is D1, a dimension of the heat exchanger plate is D2, a dimension of the first lower wall is D3, where: 0.14≤D1 / (D1+D2+D3)≤0.46.

Description

FIELD OF TECHNOLOGY

[0001] The present application relates to the field of battery technology, in particular to a battery housing. STATE OF THE ART

[0002] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles have become an important component of the sustainable development of the automotive industry due to their energy-saving and environmentally friendly advantages. For electric vehicles, battery technology is a key factor that impacts vehicle development.

[0003] Battery reliability is an issue that cannot be ignored in the battery manufacturing process. Therefore, improving battery reliability is an urgent technical challenge that must be addressed in battery technology. SUMMARY

[0004] The present application provides a battery case, a battery, and an electrical device. The technical solutions of the present application can improve the reliability of the battery.

[0005] The essential technical solutions of the present application to achieve the above-mentioned objectives include: The embodiments of the present application provide a battery housing comprising a peripheral frame, a base plate, a center support, and a first thermal insulation plate. The peripheral frame is formed in a ring shape. The base plate is connected to the peripheral frame, wherein the base plate and the peripheral frame enclose a receiving space. The base plate has a heat exchanger plate, and the heat exchanger plate is arranged opposite the receiving space in a direction perpendicular to the base plate. The center support has two ends in the longitudinal direction, each of which is connected to the peripheral frame to divide the receiving space. The first thermal insulation plate is arranged between the center support and the heat exchanger plate, wherein a thermal conductivity of the first thermal insulation plate is lower than a thermal conductivity of the heat exchanger plate.The center beam has a first upper wall and a first lower wall. The first upper wall and the first lower wall are both arranged parallel to the base plate, and the first lower wall is arranged toward the base plate. The first lower wall, the first thermal insulation plate, and the heat exchanger plate are firmly connected via rivet connectors. In the direction perpendicular to the base plate, a dimension of the first thermal insulation plate is D1, a dimension of the heat exchanger plate is D2, and a dimension of the first lower wall is D3, where 0.14≤D1 / (D1+D2+D3)≤0.46.

[0006] In the above solution, the first bottom wall, the first thermal insulation plate, and the heat exchanger plate are firmly connected via rivet connectors, which enables quick and easy fastening of the first bottom wall, the first thermal insulation plate, and the heat exchanger plate, simplifying operation and saving time and money, thereby improving battery production efficiency. The dimension of the first thermal insulation plate is D1, the dimension of the heat exchanger plate is D2, and the thickness of the first bottom wall is D3, where 0.14≤D1 / (D1+D2+D3)≤0.46. This ensures sufficient static strength of the first thermal insulation plate, reduces the probability of the first thermal insulation plate being crushed during the blind riveting process, and thus improves the reliability of the battery casing.On the other hand, the thickness of the first thermal insulation plate is not too large, thus reducing the probability of insufficient riveting force for sealing and connecting the heat exchanger plate and the center support. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] To better illustrate the technical solutions in the specific embodiments of the present application or the prior art, the drawings necessary for describing the specific embodiments or the prior art are briefly described here by way of introduction. It is understood that the drawings described below represent some embodiments of the present application. A person of ordinary skill in the art can also create further drawings based on these drawings without any creative effort. Fig. 1 is a schematic diagram of a vehicle according to some embodiments of the present application; Fig. 2 is a perspective view of a battery case according to some embodiments of the present application; Fig. 3 is a plan view of a battery cell according to some embodiments of the present application; Fig. 4 is a sectional view along direction AA in Fig. 3; Fig. 5 is an enlarged partial view of circle D in Fig. 4; Fig. 6 is a sectional view along direction BB in Fig. 3; Fig. 7 is an enlarged partial view of circle E in Fig. 6; Fig. 8 is an enlarged partial view of circle F in Fig. 6; Fig. 9 is a sectional view along direction CC in Fig. 3; and Fig. 10 is an enlarged partial view of circle G in Fig. 9.

[0008] [Reference numeral] Battery case 100, surrounding frame 110, first side support 111, second side support 112, third side support 113, fourth side support 114, bottom plate 120, heat exchanger plate 121, first heat exchanger plate 121a, second heat exchanger plate 121b, center support 130, first upper wall 130a, first lower wall 130b, first center support 131, second center support 132, first heat insulation plate 141, receiving space 101, battery compartment 101a, electrical compartment 101b, rivet connector 160, first protruding edge 111a, second protruding edge 112a. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0009] To clarify the objectives, technical solutions, and advantages of the embodiments of the present application, the technical solutions in the embodiments of the present application are clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. It is understood that the described embodiments are only a portion of the embodiments of the present application and not all embodiments of the present application. All further embodiments derivable by a person skilled in the art from the embodiments of the present application without creative effort fall within the scope of the present application.

[0010] Unless otherwise defined, all technical and scientific terms used in this application have the same meanings as commonly understood by one of ordinary skill in the art to which this application refers. The terms used in the description of this application are for the purpose of describing particular embodiments only and are not intended to be limiting of this application. The terms "comprising" and "having" and any variations of these terms in the description, claims, and above drawings of this application are intended to be a non-exclusive list. The terms "first," "second," etc. in the description, claims, or above drawings of this application are used to distinguish different objects, not to describe a particular order or precedence-subordination relationship.

[0011] Reference to "embodiment" in this application means that particular features, structures, or characteristics described in connection with the embodiments may be included in at least one embodiment of this application. The appearance of this term in various places in the specification does not necessarily imply that it refers to one and the same embodiment, nor does it necessarily refer to independent or alternative embodiments that exclude one another. Those skilled in the art will explicitly and implicitly understand that the embodiments described in this application may be combined with other embodiments.

[0012] It should be noted that in the description of the present application, the terms "mounted," "connected," "coupled," and "attached" are to be understood in a broad sense unless expressly stated and limited otherwise. This may, for example, be a fixed connection, a detachable connection, or an integral connection; this may be a direct connection or an indirect connection via intermediate media. The relevant skilled person can understand the specific meanings of these terms in the present application according to the respective situations.

[0013] In this application, the term "and / or" is merely a description of the association relationship between associated objects and indicates that three relationships can exist. For example, A and / or B can indicate: only A exists, both A and B exist, or only B exists. Furthermore, the character " / " in this application generally indicates an "or" relationship between the association objects before and after this character.

[0014] The terms "plurality of" or "several" appearing in the present application refer to two or more (including two), similarly "several groups" refers to two or more groups (including two groups), "several parts" refers to two or more parts (including two parts).

[0015] In some embodiments, the battery may be a battery module. If multiple battery cells are present, the multiple battery cells are arranged and secured to form a battery module.

[0016] In some embodiments, the battery may be a battery pack. The battery pack includes a battery housing and battery cells, with the battery cells or battery module housed in the battery housing.

[0017] In some embodiments, the battery cell may be a secondary battery, which refers to a battery cell that can be reused by charging it after discharge to activate the active materials. The battery cell may be a lithium-ion battery, sodium-ion battery, sodium-lithium-ion battery, lithium metal battery, sodium metal battery, lithium-sulfur battery, magnesium-ion battery, nickel-metal hydride battery, nickel-cadmium battery, lead-acid battery, etc., which is not limited in the embodiments of the present application.

[0018] Electric vehicles have developed dramatically in recent years. Batteries play an irreplaceable role as a power source in electric vehicles. Batteries are a key component of electric vehicles and, as such, are subject to high stability requirements.

[0019] Currently, a battery case typically incorporates a thermal insulation component between a center support and a heat exchanger plate to reduce heat transfer. The heat exchanger plate, thermal insulation component, and center support can be firmly connected using threaded fasteners or welding, but using threaded fasteners or welding to achieve the connection is complicated and time-consuming, resulting in low production efficiency for the battery case.

[0020] In order to improve the production efficiency of the battery housing while simultaneously taking into account the static stability of the battery housing, some embodiments of the present application provide a battery housing comprising a peripheral frame, a base plate, a center support and a first thermal insulation plate.

[0021] The surrounding frame is formed in a ring shape. The base plate is connected to the surrounding frame, wherein the base plate and the surrounding frame enclose a receiving space. The base plate has a heat exchanger plate, and the heat exchanger plate is arranged opposite the receiving space in a direction perpendicular to the base plate. The center support has two ends in the longitudinal direction, each of which is connected to the surrounding frame to divide the receiving space. The first thermal insulation plate is arranged between the center support and the heat exchanger plate, wherein a thermal conductivity of the first thermal insulation plate is lower than a thermal conductivity of the heat exchanger plate.The center beam has a first upper wall and a first lower wall. The first upper wall and the first lower wall are both arranged parallel to the base plate, and the first lower wall is arranged toward the base plate. The first lower wall, the first thermal insulation plate, and the heat exchanger plate are firmly connected via rivet connectors. In the direction perpendicular to the base plate, a dimension of the first thermal insulation plate is D1, a dimension of the heat exchanger plate is D2, and a dimension of the first lower wall is D3, where 0.14≤D1 / (D1+D2+D3)≤0.46.

[0022] In the above solution, the first bottom wall, the first thermal insulation plate, and the heat exchanger plate are firmly connected via rivet connectors, which enables quick and easy fastening of the first bottom wall, the first thermal insulation plate, and the heat exchanger plate, simplifying operation and saving time and money, thereby improving battery production efficiency. The dimension of the first thermal insulation plate is D1, the dimension of the heat exchanger plate is D2, and the thickness of the first bottom wall is D3, where 0.14≤D1 / (D1+D2+D3)≤0.46. This ensures sufficient static strength of the first thermal insulation plate, reduces the probability of the first thermal insulation plate being crushed during the blind riveting process, and thereby improves the reliability of the battery casing.In addition, the thickness of the first thermal insulation plate is not too large, thus reducing the probability of insufficient riveting force for sealing and connecting the heat exchanger plate and the center beam.

[0023] The battery disclosed in the embodiments of the present application may be used in vehicles, but is not limited thereto, and may also be used in other electrical devices having structural supports in which the battery may be arranged to avoid the structural supports of other electrical devices.

[0024] The battery disclosed in the embodiments of the present application can be used, but is not limited to, in vehicles, ships, aircraft, and other electrical devices that have longitudinal beams and can ensure that the battery avoids these structural beams. The power system of such electrical devices can be constructed using batteries with features disclosed in the present application.

[0025] The embodiments of the present application provide an electrical device that uses a battery as a power source. The electrical device may include, but is not limited to, mobile phones, tablets, laptops, electric toys, electric tools, electric bicycles, electric motorcycles, electric cars, ships, heavy-duty trucks, buses, spacecraft, etc. The electric toys may include stationary or mobile electric toys, such as game consoles, toy electric cars, toy electric ships, and toy electric airplanes, etc. Spacecraft may include airplanes, rockets, space shuttles, and spaceships, etc.

[0026] For convenience of explanation, the following embodiments use a vehicle as an example of an electrical device in an embodiment of the present application.

[0027] It will be Fig. 1, which is a schematic diagram of a vehicle 1000 according to some embodiments of the present application. The vehicle 1000 may be a fuel-powered vehicle, a gas-powered vehicle, or a new energy vehicle, where the new energy vehicle may be a pure electric vehicle, a hybrid vehicle, a range-extended vehicle, etc. The type of vehicle 1000 may be a sedan, an SUV, a heavy-duty truck, a bus, etc. A battery 100 is installed in the vehicle 1000, and the battery 100 may be installed on the bottom, front, or rear of the vehicle 1000.The battery 100 may be used to supply power to the vehicle 1000. For example, the battery 100 may serve as the operating power source of the vehicle 1000, used for the vehicle's electrical system, such as the power required to start, navigate, and operate the vehicle.

[0028] The vehicle 1000 may also include a controller 200 and a motor 300, wherein the controller 200 is used to control the battery 100 to supply energy to the motor 300, for example, for the power requirements of starting, navigating, and driving the vehicle.

[0029] In some embodiments of the present application, the battery 100 may serve not only as the operating power source of the vehicle 1000, but also as the motive power source of the vehicle 1000, and may replace fuel or natural gas in whole or in part to provide the motive power for the vehicle 1000.

[0030] Some embodiments of the present application provide a battery housing. Reference is made to the Fig. 2-9, whereby Fig. 2 is a perspective view of the battery housing according to some embodiments of the present application, Fig. 3 is a plan view of a battery cell according to some embodiments of the present application, Fig. 4 is a sectional view along direction AA in Fig. 3, Fig. 5 is an enlarged partial view of circle D in Fig. 4, Fig. 6 is a sectional view along direction BB in Fig. 3, Fig. 7 is an enlarged partial view of circle E in Fig. 6, Fig. 8 is an enlarged partial view of circle F in Fig. 6, Fig. 9 is a sectional view along direction CC in Fig. 3, and Fig. 10 is an enlarged partial view of circle G in Fig. 9.

[0031] The battery case 100 according to embodiments of the present application may include a peripheral frame 110, a bottom plate 120, a center support 130, and a first thermal insulation plate 141. As the name suggests, the peripheral frame 110 and the bottom plate 120 form the frame structure of the battery case 100, and battery cells or electrical components in the battery case 100 may be installed directly or indirectly on the peripheral frame 110 and the bottom plate 120.

[0032] The surrounding frame 110 can be made of a metallic material, such as steel, so that sufficient static strength of the surrounding frame 110 is ensured.

[0033] The surrounding frame 110 may be formed as an annular structure. The surrounding frame 110 may, for example, include a first side support 111, a third side support 113, a second side support 112, and a fourth side support 114 connected end-to-end. The first side support 111 and the second side support 112 may be arranged opposite each other in one direction, and the third side support 113 and the fourth side support 114 may be arranged opposite each other in another direction.

[0034] The base plate 120 is connected to the surrounding frame 110. The base plate 120 can be firmly connected to the surrounding frame 110, for example, along the thickness direction of the base plate 120, and the base plate 120 and the surrounding frame 110 enclose a receiving space 101. The receiving space 101 can be a space for accommodating battery cells or electrical components, which is not limited in the present application.

[0035] The base plate 120 includes a heat exchanger plate 121. The heat exchanger plate 121 is arranged opposite the receiving space 101 in the direction perpendicular to the base plate 120. The heat exchanger plate 121 can exchange heat with battery cells located in the receiving space 101 and thereby adjust the temperature of the battery cells to ensure that the battery cells operate at suitable operating temperatures.

[0036] The two longitudinal ends of the center beam 130 are connected to the peripheral frame 110. The center beam 130 is arranged within the space enclosed by the peripheral frame 110 and the base plate 120 (i.e., the accommodation space 101), so that the center beam 130 can divide the accommodation space 101. The accommodation space 101 can be divided into spaces for accommodating battery cells and spaces for electrical components, etc., which is not particularly limited in the present application. The two longitudinal ends of the center beam 130 are connected to the first side beam 111 and the second side beam 112, respectively.

[0037] The heat exchanger plate 121 can be connected to the surrounding frame 110. The heat exchanger plate 121 is arranged opposite the receiving space 101 in the direction perpendicular to the base plate 120. It should be noted that the direction perpendicular to the base plate 120 is the thickness direction of the base plate 120.

[0038] Battery cells can be arranged in the receiving space 101, and the heat exchanger plate 121 is arranged opposite the receiving space 101 in the direction perpendicular to the base plate 120. The heat exchanger plate 121 can be in direct or indirect contact with the battery cells and adjust the temperature of the battery cells to ensure that the battery cells always operate at suitable temperatures.

[0039] In the direction perpendicular to the base plate 120, the first thermal insulation plate 141 is arranged between the center support 130 and the heat exchanger plate 121. The first thermal insulation plate 141 can separate the center support 130 from the heat exchanger plate 121, thereby preventing direct contact between the heat exchanger plate 121 and the center support 130.

[0040] In this case, a thermal conductivity of the first thermal insulation plate 141 is lower than a thermal conductivity of the heat exchanger plate 121, which reduces the heat transfer from the heat exchanger plate 121 to the center support 130 and ensures that the heat exchanger plate 121 maximizes the heat transport with the battery cells.

[0041] In the embodiments of the present application, the center beam 130 has a first upper wall 130a and a first lower wall 130b, both of which are arranged parallel to the bottom plate 120. The first lower wall 130b faces the bottom plate 120, or in other words, the first lower wall 130b is closer to the bottom plate 120 than the first upper wall 130a. The first upper wall 130a and the first lower wall 130b are arranged opposite each other in the direction perpendicular to the bottom plate 120.

[0042] The first bottom wall 130b, the first thermal insulation plate 141 and the heat exchanger plate 121 are firmly connected via rivet connectors 160, which enables quick and easy fastening, simplifies operation, and saves time and money, thereby improving the efficiency of battery production.

[0043] In the thickness direction of the frame of the battery case, a dimension of the first heat insulation plate 141 is D1, a dimension of the heat exchanger plate 121 is D2, and the thickness of the first bottom wall 130b is D3, where: 0.14≤D1 / (D1+D2+D3)≤0.46.

[0044] The rivet connectors 160 must pass through the first bottom wall 130b, the first thermal insulation plate 141, and the heat exchanger plate 121. Since the rivet force is within a fixed range, D1+D2+D3 is also within a fixed range. D1 / (D1+D2+D3) represents the proportion of the thickness of the first thermal insulation plate 141 within a fixed thickness.

[0045] For example, D1 / (D1+D2+D3) may be 0.14, 0.18, 0.22, 0.26, 0.3, 0.34, 0.38, 0.42, or 0.46. This application does not specifically limit the value of D1 / (D1+D2+D3) as long as D1 / (D1+D2+D3) remains within the above range.

[0046] Generally, the larger the dimension D1 of the first thermal insulation plate 141, the better the static strength of the first thermal insulation plate 141. Since 0.14≤D1 / (D1+D2+D3)≤0.46, this ensures sufficient static strength of the first thermal insulation plate 141 and reduces the likelihood of damage during the blind riveting process, while simultaneously reducing the likelihood of poor thermal insulation due to an excessively small dimension D1 of the first thermal insulation plate 141, thereby improving the reliability of the battery case 100. On the other hand, the thickness of the first thermal insulation plate 141 is not excessive, thus reducing the likelihood of insufficient riveting force for sealing and connecting the heat exchanger plate 121 and the center beam 130.

[0047] According to some embodiments of the present application, D1 is: 1mm≤D1≤2mm, and (D1+D2+D3) is: 4mm≤(D1+D2+D3)≤7mm.

[0048] The dimension D1 of the first thermal insulation plate 141 can be, for example, 1 mm, 1.25 mm, 1.5 mm, 1.75 mm, or 2 mm. This therefore not only ensures the heat-blocking effect but also reduces the likelihood of a reduced overall energy density of the battery due to an excessive thickness of the first thermal insulation plate 141.

[0049] (D1+D2+D3) can be 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm, or 7 mm. This application does not specifically limit the value of (D1+D2+D3); as long as (D1+D2+D3) satisfies 4 mm ≤ (D1+D2+D3) ≤ 7 mm, it falls within the scope of this application.

[0050] Consequently, on the one hand, the overall dimensions of the first lower wall 130b, the first thermal insulation plate 141, and the heat exchanger plate 121 in the direction perpendicular to the base plate 120 are sufficient to provide adequate strength for accommodating the rivet connectors. On the other hand, the overall dimensions of the first lower wall 130b, the first thermal insulation plate 141, and the heat exchanger plate 121 in the direction perpendicular to the base plate 120 are not so large that the overall energy density of the battery is significantly reduced.

[0051] In some embodiments of the present application, the dimension of the first thermal insulation plate 141 in the direction perpendicular to the base plate 120 may be 1 mm-2 mm. For example, the dimension D1 of the first thermal insulation plate 141 may be 1 mm, 1.25 mm, 1.5 mm, 1.75 mm, or 2 mm. This therefore not only ensures the heat-blocking effect but also reduces the likelihood of a reduced overall energy density of the battery due to an excessive thickness of the first thermal insulation plate 141.

[0052] The dimension D2 of the heat exchanger plate 121 can be 1.8 mm - 2.4 mm in the direction perpendicular to the base plate 120. The dimension of the heat exchanger plate 121 can be, for example, 1.8 mm, 1.9 mm, 2.0 mm, 2.1 mm, 2.2 mm, 2.3 mm, or 2.4 mm. This consequently improves the static strength of the heat exchanger plate 121 while ensuring sufficient heat transfer capacity.

[0053] The dimension of the first lower wall 130b in the direction perpendicular to the base plate 120 can be 1.6 mm - 2.5 mm. The dimension of the first lower wall 130b can be, for example, 1.6 mm, 1.7 mm, 1.8 mm, 1.9 mm, 2 mm, 2.1 mm, 2.2 mm, 2.3 mm, 2.4 mm, or 2.5 mm. Therefore, this not only ensures sufficient static strength of the first lower wall 130b, but also avoids difficulties during riveting or a significant reduction in the energy density of the battery due to an overly large dimension of the first lower wall 130b in the direction perpendicular to the base plate 120.

[0054] In the present application, the direction perpendicular to the base plate 120 is denoted by X in the drawings, the first direction is denoted by Y in the drawings, and the second direction is denoted by Z in the drawings.

[0055] In some embodiments of the present application, a ratio of an overhang area of ​​the first thermal insulation panel 141 to an overhang area of ​​the center beam 130 in the direction perpendicular to the base plate 120 is not greater than 1.2. The ratio of the overhang area of ​​the first thermal insulation panel 141 to the overhang area of ​​the center beam 130 may be, for example, 1.2, 1.4, 1.6, 1.8, 2.0, 2.2, etc.

[0056] In other words, the overhang area of ​​the first thermal insulation plate 141 in the direction perpendicular to the base plate 120 can be less than or equal to the overhang area of ​​the center support 130. This not only ensures a stable connection and seal between the first thermal insulation plate 141 and the center support 130, but also prevents the first thermal insulation plate 141 from protruding too deeply (or not at all) into the subchambers formed in the receiving space 101 divided by the center support 130, thus reducing the likelihood of the first thermal insulation plate having a disruptive influence on battery cells or electrical components.

[0057] It is understood that the overhang area of ​​the first thermal insulation panel 141 in the direction perpendicular to the base plate 120 can be larger than the overhang area of ​​the center support 130. In this case, a partial section of the first thermal insulation panel 141 can extend into the subchambers separated by the center support 130. It should be noted that the partial section of the first thermal insulation panel 141 can only extend into an electrical compartment 101b for electrical components; the first thermal insulation panel 141 cannot extend into a battery compartment 101a for battery cells.

[0058] In some embodiments of the present application, the projection of the first thermal insulation plate 141 in the direction perpendicular to the base plate 120 lies within the projection of the center support 130. Accordingly, the first thermal insulation plate 141 does not protrude beyond the center support 130 in the direction perpendicular to the base plate 120, thereby preventing interference with components in the sub-chambers separated by the center support 130 and interference with the frame structure.

[0059] In a first direction, a dimension of the projection of the first thermal insulation plate 141 is smaller than a dimension of the projection of the center support 130, wherein the first direction, the longitudinal direction of the center support 130, and the thickness direction of the base plate 120 are perpendicular to one another. The center support 130 divides the receiving space 101 in the first direction, so that the receiving space 101 can be divided into several sub-chambers. Since the projection dimension of the first thermal insulation plate 141 is smaller than the projection dimension of the center support 130 in the first direction, the first thermal insulation plate 141 does not protrude into the sub-chambers, which reduces the likelihood of interference with battery cells or electrical components in the sub-chambers.

[0060] According to some embodiments of the present application, the overhang of the first thermal insulation plate 141 in the first direction has a first edge and a second edge, and the overhang of the center support 130 has a third edge and a fourth edge.

[0061] In the first direction, the first edge and the third edge lie on the same side, with a distance between the first edge and the third edge not being greater than 5 mm, and the second edge and the fourth edge lie on the same side, with a distance between the second edge and the fourth edge not being greater than 5 mm.

[0062] The first edge does not protrude beyond the third edge, and the second edge does not protrude beyond the fourth edge. The distance between the first edge and the third edge is no greater than 5 mm, and the distance between the second edge and the fourth edge is no greater than 5 mm. This ensures, on the one hand, that the two ends of the first thermal insulation panel 141 do not protrude into the corresponding subchambers in the first direction. On the other hand, it ensures that the dimensions of the first thermal insulation panel 141 are not too small, thus avoiding insufficient dimensioning for the thermal insulation and sealing effects.

[0063] According to some embodiments of the present application, the projection of the first thermal insulation panel 141 in the direction perpendicular to the base plate 120 lies within the projection of the center beam 130; in the first direction, the projection of the first thermal insulation panel 141 is equal to the projection of the center beam 130, wherein the first direction, the longitudinal direction of the center beam 130, and the direction perpendicular to the base plate 120 are perpendicular to each other.

[0064] In the above solution, the center beam 130 divides the receiving space 101 in the first direction, and the receiving space 101 is divided into a plurality of subchambers. Since the protrusion of the first thermal insulation plate 141 in the first direction is equal to the protrusion of the center beam 130, the two ends of the first thermal insulation plate 141 in the first direction are aligned with the two ends of the center beam 130 in the first direction, thereby preventing the first thermal insulation plate 141 from protruding into the subchambers and reducing the likelihood of the first thermal insulation plate 141 interfering with battery cells or electrical components in the subchambers.

[0065] In some embodiments of the present application, the receiving space 101 includes a battery compartment 101a and an electrical compartment 101b, with the center support 130 separating the battery compartment 101a from the electrical compartment 101b. That is, one side of the center support 130 in the thickness direction is the battery compartment 101a, and the other side of the center support 130 in the thickness direction is the electrical compartment 101b.

[0066] In other embodiments, there are multiple battery compartments 101a, with the center support 130 separating adjacent battery compartments 101a. That is, one side of the center support 130 in the thickness direction is the battery compartment 101a, and the other side of the center support 130 in the thickness direction is also the battery compartment 101a.

[0067] In other embodiments, there are multiple battery compartments 101a, with some center supports 130 separating the battery compartment 101a from the electrical compartment 101b. That is, for these center supports 130, one side of the center supports 130 in the thickness direction is the battery compartment 101a, and the other side of the center supports 130 in the thickness direction is the electrical compartment 101b. Other center supports 130 separate adjacent battery compartments 101a, that is, for these center supports 130, one side of the center supports 130 in the thickness direction is the battery compartment 101a, and the other side of the center supports 130 in the thickness direction is also the battery compartment 101a.

[0068] According to some embodiments of the present application, the center beam 130 comprises a first center beam 131, the two ends of which are each connected to the peripheral frame 110 in the longitudinal direction to separate the battery compartment 101a from the electrical compartment 101b. In the first direction, the projection of the first thermal insulation plate 141 in the direction perpendicular to the bottom plate 120 has a first edge and a second edge, and the projection of the first center beam 131 in the direction perpendicular to the bottom plate 120 has a third edge and a fourth edge. The first edge and the third edge both face the electrical compartment 101b, while the second edge and the fourth edge both face the battery compartment 101a. In the first direction, the first edge protrudes beyond the third edge, but the second edge does not protrude beyond the fourth edge.The first direction, the longitudinal direction of the central support and the direction perpendicular to the base plate 120 are perpendicular to each other.

[0069] It can be seen that the direction perpendicular to the base plate 120 is the thickness direction of the base plate.

[0070] In the above solution, the spaces on both sides of the first center beam 131 in the first direction are the battery compartment 101a and the electrical compartment 101b, respectively. Since more space is available in the electrical compartment 101b, the first edge in the first direction can extend beyond the third edge, thereby allowing the first thermal insulation plate 141 to protrude into the electrical compartment, while the second edge does not extend beyond the fourth edge, preventing the first thermal insulation plate 141 from protruding into the battery compartment 101a.

[0071] In some embodiments of the present application, the material of the first thermal insulation plate 141 may comprise epoxy resin. The first thermal insulation plate 141 may, for example, be an epoxy resin component that provides good thermal insulation properties and effectively reduces heat transfer from the heat exchanger plate 121 to the center support 130.

[0072] According to some embodiments of the present application, a plurality of rivet connectors 160 are arranged at intervals. The first thermal insulation plate 141 has a plurality of first through-holes for the passage of the rivet connectors 160, wherein the first through-holes correspond one-to-one to the rivet connectors 160. This enables the plurality of rivet connectors 160 to more firmly fasten the center beam 130, the first thermal insulation plate 141, and the heat exchanger plate 121 to one another.

[0073] The first thermal insulation panel 141 can, for example, be a continuous strip that is attached to the center support 130 via several rivet connectors 160. Compared to the first thermal insulation panel 141 divided into several smaller components, the first thermal insulation panel 141 as a continuous strip provides, on the one hand, greater assembly efficiency. On the other hand, the first thermal insulation panel 141 as a continuous strip also offers a better thermal insulation effect.

[0074] According to some embodiments of the present application, the number of first through holes is N1, where: 2≤N1 / D1≤12.

[0075] N1 / D1 represents the number of first through holes per unit thickness of the first thermal insulation board 141. A larger N1 / D1 indicates a lower strength of the first thermal insulation board 141, while a smaller N1 / D1 indicates a better strength of the first thermal insulation board 141.

[0076] N1 / D1 can be, for example, 2, 4, 6, 8, 10, or 12. This application does not specifically limit the value of N1 / D1; as long as N1 / D1 is within the above range, it falls within the scope of this application. Note that the unit of measurement for the thickness of the first thermal insulation board 141 in this application is millimeters.

[0077] By maintaining the above-mentioned relationship between the number of the first through holes and the dimension of the first thermal insulation plate 141 in the thickness direction of the housing, sufficient static strength of the first thermal insulation plate 141 is ensured and the probability of damage during riveting due to insufficient strength is reduced, while also solving the problem of insufficient sealing between the heat exchanger plate 121 and the first center beam 131, which might result from excessive thickness.

[0078] In some embodiments of the present application, the heat exchanger plate 121 comprises a first heat exchanger plate 121a and a second heat exchanger plate 121b connected sequentially in the thickness direction of the housing, with the first thermal insulation plate 141 arranged between the first heat exchanger plate 121a and the center support 130. The first heat exchanger plate 121 is formed as a flat plate structure, while the second heat exchanger plate 121 has heat transfer channels inside.

[0079] The materials of the first heat exchanger plate 121a and the second heat exchanger plate 121b may be the same, or the thermal conductivities of the first heat exchanger plate 121a and the second heat exchanger plate 121b may be the same. This ensures that heat can be transferred between the first heat exchanger plate 121a and the second heat exchanger plate 121b at a relatively uniform rate.

[0080] The first heat exchanger plate 121a is configured as a flat plate structure without grooves, which simplifies the formation of the first heat exchanger plate 121a and provides shorter heat transfer paths compared to the first heat exchanger plate 121a, which is configured as a non-flat structure. As the flat plate structure of the first heat exchanger plate 121a, the first heat exchanger plate 121a acts as a heat equalization plate, enabling uniform heat transfer to battery cells and reducing operating temperature differences across different areas of the battery cells.

[0081] According to some embodiments of the present application, the first bottom wall 130b and the first thermal insulation plate 141 have a first side surface and a second side surface, respectively, which are in contact with each other, wherein the first side surface and the second side surface are both formed as planar surfaces.

[0082] That is, the contact sides of the first bottom wall 130b and the first thermal insulation plate 141 are both flat, which provides a more stable pairing of the first wall and the first thermal insulation plate 141, while neither the side of the first bottom wall 130b facing the first thermal insulation plate 141 nor the side of the first thermal insulation plate 141 facing the bottom wall 130b is provided with grooves, whereby the first bottom wall 130b and the first thermal insulation plate 141 are easier to manufacture.

[0083] In some embodiments of the present application, a first adhesive layer is disposed between the heat exchanger plate 121 and the first thermal insulation plate 141. Before inserting the rivet connectors 160 through the heat exchanger plate 121, the first thermal insulation plate 141, and the center support 130, the first thermal insulation plate 141 must be pre-positioned on the heat exchanger plate 121. The present application uses the first adhesive layer to temporarily fix the first thermal insulation plate 141 to the center support 130, thus reducing the likelihood of displacement or detachment of the first thermal insulation plate 141 during the fastening process of the rivet connectors 160 passing through the heat exchanger plate 121.

[0084] It should be noted that after the rivet connectors 160 are pushed through the first adhesive layer, the first adhesive layer deforms with the movement of the rivet connectors 160 and thus seals the gap between the rivet connectors 160 and the first bottom wall 130b, which improves the sealing performance of the battery case 100.

[0085] According to some embodiments of the present application, a dimension of the first adhesive layer in the thickness direction of the housing is t, where: 0.05mm≤t≤1mm.

[0086] A larger dimension t of the first adhesive layer ensures a more secure positioning of the first thermal insulation plate 141 on the heat exchanger plate 121, while a smaller dimension t of the first adhesive layer reduces the probability of adhesive penetration into the battery compartment 101a, thereby reducing the impact on battery cells in the battery compartment 101a.

[0087] The dimension t of the first adhesive layer can be, for example, 0.05 mm, 0.1 mm, 0.15 mm, 0.2 mm, 0.25 mm, 0.3 mm, 0.35 mm, 0.4 mm, 0.45 mm, 0.5 mm, 0.55 mm, 0.6 mm, 0.65 mm, 0.7 mm, 0.75 mm, 0.8 mm, 0.85 mm, 0.9 mm, 0.95 mm, or 1 mm. The present application does not impose any particular limitation on the value; as long as it is within the above range, it falls within the scope of the present application.

[0088] This ensures, on the one hand, that the first thermal insulation plate 141 can be securely positioned on the heat exchanger plate 121. On the other hand, it prevents excessive thickness of the adhesive, which could overflow into the receiving space 101 and thereby impair battery cells.

[0089] In some embodiments of the present application, the thermal conductivity of the first adhesive layer is greater than or equal to 0.38 W / (m K). Note that in the present application, the test standard GB / T 10297-2015 can be used to measure the thermal conductivity of the first adhesive layer.

[0090] This ensures, on the one hand, that the first adhesive layer has sufficient thermal insulation properties and reduces the heat transfer rate within the first adhesive layer. On the other hand, it also ensures that the material selection for the first adhesive layer is sufficiently replaceable, which reduces the operating costs of the first adhesive layer. If an adhesive with poor thermal conductivity is used for the first adhesive layer, sufficient bond strength must of course be ensured.

[0091] In some embodiments of the present application, the surrounding frame 110 comprises a first side support 111 and a second side support 112 spaced apart in a second direction, with the two ends of the first center support 131 being connected to the first side support 111 and the second side support 112, respectively. The second direction is parallel to a longitudinal direction of the first center support 131.

[0092] The first side support 111 and / or the second side support 112 has a protruding edge that protrudes toward the receiving space 101. In the direction perpendicular to the base plate 120, a projection of the protruding edge partially overlaps a projection of the heat exchanger plate 121.

[0093] This means that either the first side support 111 or the second side support 112 or both can each have a protruding edge.

[0094] Since in the above solution the first side support 111 and / or the second side support 112 has a protruding edge, the protrusion of the protruding edge partially overlaps the protrusion of the heat exchanger plate 121 in the direction perpendicular to the bottom plate 120 and promotes a firm connection between the first side support 111 and / or the second side support 112 and the heat exchanger plate 121, which improves the efficiency of the connection and the effectiveness of the connection.

[0095] According to some embodiments of the present application, the protruding edges comprise a first protruding edge 111a and a second protruding edge 112a. The first side support 111 and the second side support 112 have the first protruding edge 111a and the second protruding edge 112a, respectively, which protrude toward the receiving space 101. In the direction perpendicular to the base plate 120 a projection of the first projecting edge 111a partially overlaps the projection of the heat exchanger plate 121, and a projection of the second projecting edge 112a partially overlaps the projection of the heat exchanger plate 121. This arrangement promotes a firm connection between the first side support 111 and the heat exchanger plate 121 or between the second side support 112 and the heat exchanger plate 121.

[0096] In some embodiments, friction welding may be used to firmly join the first protruding edge 111a to the heat exchanger plate 121 and the second protruding edge 112a to the heat exchanger plate 121.

[0097] In some embodiments of the present application, the two ends of the first thermal insulation plate 141 in the second direction are in contact with the first protruding edge 111a and the second protruding edge 112a.

[0098] Since the two ends of the first thermal insulation plate 141 are connected in the second direction to the first protruding edge 111a and the second protruding edge 112a, respectively, the thermal insulation effectiveness of the first thermal insulation plate 141 is improved, thereby effectively blocking the heat transferred from the heat exchanger plate 121 to the center support 130. Furthermore, the sealing performance of the first thermal insulation plate 141 is improved, preventing the intrusion of dust, dirt, or condensate between the center support 130 and the heat exchanger plate 121.

[0099] In some embodiments of the present application, the two ends of the first thermal insulation plate 141 are spaced apart in the second direction from the first protruding edge 111a and the second protruding edge 112a by a distance E, where: 3mm≤E≤7mm.

[0100] The distance between the first protruding edge 111a and the first thermal insulation plate 141 and the distance between the second protruding edge 112a and the first thermal insulation plate 141 in the second direction may be, for example, 3 mm, 3.5 mm, 4 mm, 4.5 mm, 5 mm, 5.5 mm, 6 mm, 6.5 mm and 7 mm.

[0101] Since the two ends of the first thermal insulation plate 141 are spaced apart in the second direction from the first protruding edge 111a and the second protruding edge 112a, this reduces the probability of the first thermal insulation plate 141 compressing the first protruding edge 111a and the second protruding edge 112a due to thermal expansion, thereby effectively reducing the probability of deformation and improving the overall static stability of the battery case 100.

[0102] According to some embodiments of the present application, in the direction perpendicular to the base plate 120, the side of both the first protruding edge 111a and the second protruding edge 112a facing the receiving space 101 each protrudes beyond the side of the first thermal insulation plate 141 facing the receiving space 101; in the direction perpendicular to the base plate 120, the side facing the heat exchanger plate 121 partially protrudes so that it touches the first thermal insulation plate 141.

[0103] The underside of the central support 130 must touch the side of both the first protruding edge 111a and the second protruding edge 112a facing the first receiving space 101, as well as the side of the first thermal insulation panel 141 facing the first receiving space 101. In the longitudinal direction of the central support 130, the central region of the underside of the central support 130 protrudes from the two end regions of the underside of the central support 130. The protruding central region touches the first thermal insulation panel 141, while the two end regions touch the first protruding edge 111a and the second protruding edge 112a, respectively.

[0104] In other words, the central region and the two end regions form correspondingly stepped sections. In the longitudinal direction of the center support 130, the first protruding edge 111a and the second protruding edge 112a are each arranged opposite the protruding central region. This provides a more stable connection between the center support 130 and the peripheral frame 110 and improves the overall strength of the battery case 100.

[0105] According to some embodiments of the present application, a tensile strength of the first thermal insulation board 141 at room temperature is not less than 135 MPa.

[0106] The hardness of the first thermal insulation plate 141 can be, for example, 135 MPa, 140 MPa, 145 MPa, 150 MPa or 155 MPa.

[0107] This ensures, on the one hand, sufficient hardness and contact strength of the first thermal insulation plate 141 during the riveting process and, on the other hand, sufficient deformability, thereby reducing the probability of damage due to excessive hardness of the first thermal insulation plate 141.

[0108] According to some embodiments of the present application, the center support 130 comprises a first center support 131 and a second center support 132. The first center support 131 has two ends in the longitudinal direction, which are connected to the surrounding frame 110 to divide the receiving space 101 into a battery compartment 101a and an electrical compartment 101b. The second center support 132 has two ends in the longitudinal direction, which are connected to the surrounding frame 110 to separate the battery compartment 101a.

[0109] The first thermal insulation plate 141 is arranged between the first center support 131 and the heat exchanger plate 121, while the second center support 132 contacts the heat exchanger plate 121; alternatively, the first thermal insulation plate 141 is arranged between the first center support 131 and the heat exchanger plate 121, and a second thermal insulation plate is arranged between the second center support 132 and a heat transfer section, wherein the thickness of the first thermal insulation plate 141 is greater than the thickness of the second thermal insulation plate in the direction perpendicular to the base plate 120.

[0110] Several battery cells can be arranged in the battery compartment 101a, while electrical components, such as the battery management system, can be arranged in the electrical compartment 101b.

[0111] The first center beam 131 has the electrical compartment 101b and the battery compartment 101a on both sides of the first center beam 131 in the thickness direction, while the second center beam 132 has battery compartments 101a on both sides of the second center beam 132.

[0112] In the above solution, the heat exchanger plate 121 is mainly used to regulate the temperature of battery cells in the battery compartment 101a, so that by placing the first thermal insulation plate 141 between the first center support 131 and the heat exchanger plate 121, the heat transfer between the first center support 131 and the heat exchanger plate 121 is reduced, which reduces the heat transport to spaces outside the battery compartment 101a.

[0113] Furthermore, with a second thermal insulation plate between the second center support 132 and the heat transfer portion, heat can be transferred from the heat exchanger plate 121 to the second center support 132, and since battery cells are arranged on both sides of the second center support 132 in the thickness direction, heat can be transferred indirectly to battery cells.

[0114] In the direction perpendicular to the base plate 120, the thickness of the first thermal insulation plate 141 is greater than the thickness of the second thermal insulation plate. Since the first center support 131 is located closer to the exterior of the battery compartment 101a than the second center support 132, making the first thermal insulation plate 141 thicker than the second thermal insulation plate reduces heat transfer from the heat exchanger plate 121 to the exterior of the battery compartment 101a.

[0115] According to some embodiments of the present application, a second thermal insulation plate (not shown) is also arranged between the second center support 132 and the heat exchanger plate 121, and in the direction perpendicular to the base plate 120, the thickness of the first thermal insulation plate 141 is greater than the thickness of the second thermal insulation plate.

[0116] This means that even in battery cell groups, a second thermal insulation plate can be arranged between the second center support 132 and the heat exchanger plate 121 in the thickness direction on both sides of the second center support 132 in order to reduce the heat transfer from the heat exchanger plate 121 to the second center support 132.

[0117] Since the first center support 131 is located closer to the second center support 132 compared to the first receiving space 101, making the first thermal insulation plate 141 thicker than the second thermal insulation plate reduces the heat transfer from the heat exchanger plate 121 to the outside of the battery compartment 101a.

[0118] According to some embodiments of the present application, the center support 130 comprises a first center support 131 and a second center support 132. The first center support 131 has two longitudinal ends, each connected to the surrounding frame 110, to divide the receiving space 101 into a battery compartment 101a and an electrical compartment 101b, while the second center supports 132 have two longitudinal ends, each connected to the surrounding frame 110, to separate the battery compartment 101a.

[0119] The second thermal insulation plate is arranged between the second center support 132 and the heat transfer section, so that the second center support 132 and the heat transfer section are provided in plural numbers and in numerical correspondence to each other. In the direction perpendicular to the base plate 120, the thickness ratio between any two of the plurality of second thermal insulation plates is 0.9-1.1.

[0120] The thickness ratio between any two of the plurality of second thermal insulation boards may be, for example, 0.9, 0.95, 1, 1.05 or 1.1.

[0121] In the above solution, the second center beam 132 and the second thermal insulation plate are each provided in plurality and in numerical correspondence to each other, wherein a thickness ratio of any two of the plurality of second thermal insulation plates is 0.9-1.1, thereby ensuring that the thicknesses of the plurality of second center beams 132 do not differ significantly and the heat can be evenly transferred to a plurality of second center beams 132, and thereby improving the temperature uniformity of a plurality of battery cells among each other.

[0122] According to some embodiments of the present application, the heat exchanger plate 121 has a heat exchanger channel 102. In the direction perpendicular to the base plate 120, there is no overlap between the projection of the first thermal insulation plate 141 and a projection of the heat transfer channels 102.

[0123] This further reduces the heat transfer from the heat exchanger plate 121 to the center support 130 and directs the heat from the heat exchanger plate 121 mainly to battery cells in the battery compartment 101a for better regulation of the battery cell temperature.

[0124] According to some embodiments of the present application, the minimum distance S between the projection of the first thermal insulation plate 141 and the projection of the heat exchanger channel 102 is as follows: 5 mm≤S≤20 mm.

[0125] The greater the minimum distance between the projection of the first thermal insulation plate 141 and the projection of the heat exchanger channel 102, the lower the probability of heat transfer from the heat exchanger plate 121 to the first thermal insulation plate 141, and the smaller the distance between the projection of the first thermal insulation plate 141 and the projection of the heat exchanger channel 102, the larger the effective heat transfer area of ​​the first thermal insulation plate 141 for battery cells.

[0126] The minimum distance S between the projection of the first thermal insulation plate 141 and the projection of the heat exchanger channel 102 can be, for example, 5 mm, 7 mm, 9 mm, 11 mm, 13 mm, 15 mm, 17 mm, 19 mm or 250 mm.

[0127] As a result, on the one hand, the heat transfer from the heat exchanger plate 121 to the first thermal insulation plate 141 is further reduced. On the other hand, this prevents a channel area within the heat exchanger plate 121 that is insufficient for effective temperature regulation, which would otherwise result from an excessively large distance between the heat exchanger channel 102 and the first thermal insulation plate 141, thereby ensuring effective temperature regulation of the first thermal insulation plate 141 for the battery cells. Brief description of the battery according to embodiments of the present application:

[0128] The battery according to the embodiments of the present application comprises the above battery case 100 and battery cells arranged in the case frame of the battery case 100, wherein the heat exchanger plate 121 of the battery case 100 provides heat transfer for the battery cells.

[0129] The battery according to the embodiments of the present application achieves high production efficiency and significantly improved stability due to the incorporation of the above battery case 100. Brief description of the electrical device according to embodiments of the present application:

[0130] The electrical device according to the embodiments of the present application includes the above-mentioned battery for supplying electrical energy. The electrical device according to the embodiments of the present application achieves high production efficiency and significantly improved stability by incorporating the above-mentioned battery.

[0131] It should be noted that terms such as "comprising," "including," or other variations are intended as non-exclusive lists, such that a process, method, article, or device containing a set of elements includes not only the explicitly listed elements but also additional elements not explicitly stated, or also includes elements inherent in such a process, method, article, or device. Unless further limitations apply, an element defined by the phrase "including a..." does not preclude the presence of additional identical elements in the process, method, product, or device containing that element.

[0132] The various embodiments in this specification are described progressively, with identical or similar parts being inter-referenced between the various embodiments where appropriate. Each embodiment focuses on describing its differences from other embodiments. In particular, for system embodiments, descriptions are kept brief due to their similarity to method embodiments, with pertinent details referring to the description of method embodiments.

[0133] The above description merely illustrates embodiments of the present application and is not intended to limit the present application. Various changes and modifications will be apparent to those skilled in the art. Modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.

[0134] Although the embodiments of the present application have been described in conjunction with the drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present application, and such modifications and variations fall within the scope of the appended claims. QUOTES CONTAINED IN THE DESCRIPTION

[0000] This list of documents submitted by the applicant was generated automatically and is included solely for the convenience of the reader. This list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions. Cited patent literature

[0000] GB 10297-2015

[0089]

Claims

[1] Battery housing, comprising: a surrounding frame which is designed in a ring shape; a base plate connected to the surrounding frame, wherein the base plate and the surrounding frame enclose a receiving space, wherein the base plate has a heat exchanger plate and wherein the heat exchanger plate is arranged opposite the receiving space in a direction perpendicular to the base plate; a center beam having two ends in a longitudinal direction, each connected to the peripheral frame to divide the receiving space; a first thermal insulation plate arranged between the central support and the heat exchanger plate, wherein the first thermal insulation plate has a lower thermal conductivity than the heat exchanger plate; wherein the center beam has a first upper wall and a first lower wall, wherein the first upper wall and the first lower wall are both arranged parallel to the bottom plate, wherein the first lower wall is arranged towards the bottom plate, wherein the first lower wall, the first thermal insulation plate and the heat exchanger plate are firmly connected via rivet connectors, wherein in the direction perpendicular to the bottom plate, a dimension of the first thermal insulation plate is D1, a dimension of the heat exchanger plate is D2, a dimension of the first lower wall is D3, where: 0.14≤D1 / (D1+D2+D3)≤0.

46. [2] Battery housing according to claim 1, characterized by that for D1: 1mm≤D1≤2mm, and for (D1+D2+D3): 4mm≤(D1+D2+D3)≤7mm. [3] Battery housing according to claim 1, characterized by that the ratio of the overhang area of ​​the first thermal insulation panel to the overhang area of ​​the central support in the direction perpendicular to the floor slab is not greater than 1.

2. [4] Battery housing according to claim 1, characterized by that in the direction perpendicular to the floor slab, the projection of the first thermal insulation panel falls into the projection of the central support; in a first direction, a dimension of the projection of the first thermal insulation panel is smaller than a dimension of the projection of the central support, wherein the first direction, the longitudinal direction of the central support and the direction perpendicular to the floor slab are perpendicular to one another. [5] Battery housing according to claim 4, characterized bythat in the first direction the overhang of the first thermal insulation panel has a first edge and a second edge and the overhang of the central support has a third edge and a fourth edge; in the first direction the first edge and the third edge are on the same side and the distance between the first edge and the third edge is not greater than 5 mm, the second edge and the fourth edge are on the same side and the distance between the second edge and the fourth edge is not greater than 5 mm. [6] Battery housing according to claim 1, characterized bythat in the direction perpendicular to the floor slab, the projection of the first thermal insulation panel falls into the projection of the central support; in the first direction, a dimension of the projection of the first thermal insulation panel is equal to a dimension of the projection of the central support, wherein the first direction, the longitudinal direction of the central support and the direction perpendicular to the floor slab are perpendicular to each other. [7] Battery housing according to claim 1, characterized by that the receiving space has a battery compartment and an electrical compartment, the central support is designed to separate the battery compartment from the electrical compartment, and / or the battery compartment is a plurality of battery compartments, wherein the central support is designed to separate two adjacent battery compartments. [8] Battery housing according to claim 7, characterized byin that the central support comprises a first central support which has two ends in a longitudinal direction, each of which is connected to the surrounding frame in order to separate the battery compartment from the electrical compartment; in a first direction, the projection of the first thermal insulation plate has a first edge and a second edge in the direction running perpendicular to the base plate, the projection of the first central support has a third edge and a fourth edge in the direction running perpendicular to the base plate, the first edge and the third edge each face the electrical compartment, the second edge and the fourth edge each face the battery compartment, in the first direction the first edge projects beyond the third edge, the second edge does not project beyond the fourth edge, wherein the first direction, the longitudinal direction of the central support and the direction running perpendicular to the base plate are perpendicular to one another. [9] Battery housing according to claim 1, characterized by that the rivet connectors are a plurality of rivet connectors, wherein the plurality of rivet connectors are spaced apart from one another, the first thermal insulation plate has a plurality of first through-holes for the rivet connectors to be inserted through, which corresponds one-to-one to the plurality of rivet connectors, wherein the number of first through-holes is N1, where: 2≤N1 / D1≤12. [10] Battery housing according to claim 1, characterized by that the first lower wall and the first thermal insulation panel have a first side surface and a second side surface, respectively, which are in contact with each other, wherein the first side surface and the second side surface are each formed as flat surfaces. [11] Battery housing according to claim 1, characterized bythat a first adhesive layer is arranged between the heat exchanger plate and the first thermal insulation plate, and that in the direction perpendicular to the base plate, a dimension of the first adhesive layer is t, where: 0.05mm≤t≤1mm. [12] Battery housing according to claim 11, characterized by that the thermal conductivity of the first adhesive layer is greater than or equal to 0.38 W / (m·K). [13] Battery housing according to claim 1, characterized byin that in a second direction the surrounding frame has a first side support and a second side support which are spaced apart from one another, wherein the two ends of the central support are connected to the first side support and the second side support respectively, wherein the second direction is parallel to the longitudinal direction of the central support; the first side support and / or the second side support has a projecting edge which extends towards the receiving space, wherein in the direction perpendicular to the base plate the projection of the projecting edge partially overlaps the projection of the heat exchanger plate. [14] Battery housing according to claim 13, characterized byin that the projecting edge has a first projecting edge and a second projecting edge, wherein the first projecting edge is arranged on the first side support, wherein the second projecting edge is arranged on the second side support, wherein in the direction perpendicular to the base plate, the projection of the first projecting edge partially overlaps the projection of the heat exchanger plate and the projection of the second projecting edge partially overlaps the projection of the heat exchanger plate. [15] Battery housing according to claim 14, characterized by that in the second direction the two ends of the first thermal insulation board are in contact with the first projecting edge and the second projecting edge, respectively. [16] Battery housing according to claim 14, characterized bythat in the second direction the two ends of the first thermal insulation board are spaced from the first protruding edge or second protruding edge by a distance E, where: 3mm≤E≤7mm. [17] Battery housing according to claim 16, characterized by that side surfaces of both the first projecting edge and the second projecting edge facing a first receiving space protrude beyond a side surface of the first thermal insulation plate facing the first receiving space in the direction perpendicular to the base plate; in the direction perpendicular to the base plate, a side surface of the central support facing the heat exchanger plate partially protrudes in order to contact the first thermal insulation plate. [18] Battery housing according to claim 1, characterized by that the tensile strength of the first thermal insulation board at room temperature is not less than 135 MPa. [19] Battery housing according to claim 1, characterized byin that the center support comprises a first center support and a second center support, the first center support has two ends in a longitudinal direction, each of which is connected to the surrounding frame in order to divide the receiving space into a battery compartment and an electrical compartment, the second center support has two ends in a longitudinal direction, each of which is connected to the surrounding frame in order to separate the battery compartment; the first thermal insulation plate is arranged between the first center support and the heat exchanger plate and the second center support touches the heat exchanger plate; or the first thermal insulation plate is arranged between the first center support and the heat exchanger plate and a second thermal insulation plate is arranged between the second center support and a heat transfer section, wherein in the direction running perpendicular to the base plate, a thickness of the first thermal insulation plate is greater than a thickness of the second thermal insulation plate. [20] Battery housing according to claim 19, characterized by in that the center support comprises a first center support and a second center support, the first center support has two ends in the longitudinal direction, each of which is connected to the surrounding frame to divide the accommodation space into a battery compartment and an electrical compartment, the second center support has two ends in the longitudinal direction, each of which is connected to the surrounding frame to separate the battery compartment; a second thermal insulation plate is arranged between the second center support and the heat transfer section, the second center support and the second thermal insulation plate are each provided in plurality and in numerical correspondence to one another, wherein the thickness ratio of any two of the plurality of second thermal insulation plates in the direction perpendicular to the base plate is 0.9-1.

1. [21] Battery housing according to claim 1, characterized bythat the heat exchanger plate has an internal heat exchanger channel which runs perpendicular to the base plate, wherein the overhang of the first thermal insulation plate does not overlap the overhang of the heat exchanger channel. [22] Battery housing according to claim 19, characterized by that the minimum distance between the projection of the first thermal insulation board and the projection of the heat exchanger channel is S, where: 5 mm≤S≤20 mm.

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