Battery box body, battery and electric equipment

Abstract

The utility model belongs to the technical field of batteries, and particularly relates to a battery box body, a battery and electric equipment. The battery box body comprises a frame body, openings at two ends of the frame body in a first direction are communicated, a cooling plate is connected to the opening at one end of the frame body, and a battery cell chamber is formed; the bottom protection plate is arranged on the side, away from the battery cell cavity, of the cooling plate, a gap is reserved between the bottom protection plate and the cooling plate, the periphery of the bottom protection plate is connected with the cooling plate in a sealed mode so that a sealed cavity can be formed between the bottom protection plate and the cooling plate, and the sealed cavity is filled with high-pressure gas. According to the utility model, the structural form of the battery box body is improved, and the sealing cavity filled with the high-pressure gas is arranged between the bottom protection plate and the cooling plate, so that the pressure action of the high-pressure gas is utilized to counteract the impact of the bottom ball, the deformation of the bottom protection plate is reduced, and the bottom protection plate is prevented from colliding with the cooling plate and the battery cell due to deformation; therefore, the protection effect on the cooling plate and the battery cell is enhanced, the safety risk of damage to the battery cell is reduced, and the use safety of the battery is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of batteries, and in particular relates to a battery box, a battery and an electrical device. Background Art

[0002] With the rapid development of battery technology, lithium batteries have become one of the common battery types in the field of new energy. They are often used as power batteries in electric vehicles, and the safety of power batteries is also an important factor affecting the performance of electric vehicles. In order to cool the battery, a liquid cooling plate is usually set at the bottom of the battery to cool the battery cell. However, during use, the bottom of the battery device is easily bumped, resulting in bottom ball impact, causing the bottom guard plate or liquid cooling plate to deform and squeeze the battery cell. Especially for the battery cell with the pole facing the bottom, the pole is easily damaged after being squeezed, which poses a major safety hazard and affects the safety of the battery and the entire vehicle. Utility Model Content

[0003] In view of this, in order to improve at least one of the above-mentioned problems existing in the prior art, the utility model provides a battery box, a battery and an electrical device.

[0004] The first technical solution of the utility model provides a battery box, including: a frame body, the two ends of the frame body are opened in a first direction, a cooling plate is connected to the opening at one end of the frame body, and a battery cell chamber is formed; a bottom guard plate is arranged on the side of the cooling plate away from the battery cell chamber, and a gap is left between the bottom guard plate and the cooling plate, the periphery of the bottom guard plate is sealed with the cooling plate to form a sealed chamber between the bottom guard plate and the cooling plate, and the sealed chamber is filled with high-pressure gas.

[0005] In a feasible implementation, the bottom guard plate includes an edge plate and a main bottom plate; the edge plate is detachably connected to the periphery of the cooling plate; the main bottom plate is located on the inner side of the edge plate, the main bottom plate is recessed away from the cooling plate, and is enclosed with the cooling plate to form a sealed chamber.

[0006] In a feasible implementation, the main bottom plate is provided with an inflation port for installing an inflation valve, and the sealed chamber is inflated through the inflation valve; and / or

[0007] A plurality of raised ribs are arranged on the main bottom plate, the raised ribs are raised toward one side of the main bottom plate, and the plurality of raised ribs are arranged at intervals in a second direction perpendicular to the first direction.

[0008] In a feasible implementation, the first seal is arranged between the frame and the cooling plate and extends along the periphery of the cooling plate; the second seal is arranged between the cooling plate and the bottom guard plate and extends along the periphery of the cooling plate; wherein the first seal and the second seal are both flexible thermal insulation seals.

[0009] In a feasible implementation, the high-pressure gas includes high-pressure air or high-pressure inert gas; wherein the inflation pressure of the high-pressure gas is less than 12 bar.

[0010] In a feasible implementation, the battery box also includes: a pressure detector, which is arranged in the sealed chamber and is used to detect the air pressure of the high-pressure gas. The pressure detector is suitable for transmitting air pressure detection data to an external control system.

[0011] The technical solution of the second aspect of the utility model provides a battery, comprising: the battery box body of any one of the above-mentioned first aspect; a battery cell assembly, which is inverted in the battery cell chamber of the battery box body and connected to a cooling plate.

[0012] In a feasible implementation, the battery cell assembly includes a battery cell assembly and a support assembly; the support assembly is disposed between the battery cell assembly and the cooling plate, and is connected to the battery cell assembly and the cooling plate.

[0013] In a feasible implementation, the battery cell assembly includes a plurality of battery cells and a CCS assembly arranged in sequence along the second direction; the pole of each battery cell is located at one end facing the cooling plate, and the CCS assembly is connected to the poles of the plurality of battery cells through a bar sheet;

[0014] The support assembly includes a first support member, a second support member, structural adhesive and a heat conductor; the first support member and the second support member are arranged between the poles of the battery cell, and are respectively located on both sides of the CCS assembly in a first direction, for supporting the CCS assembly; the heat conductor is arranged between the bar and the cooling plate, and is respectively connected to the bar and the cooling plate; the structural adhesive is arranged on the side of the pole away from the first support member, and connects the cooling plate and the battery cell.

[0015] The technical solution of the third aspect of the utility model provides an electrical device, comprising the battery in any one of the above-mentioned second aspects.

[0016] The beneficial effects of the above technical solution of the utility model are embodied in:

[0017] The structural form of the battery case has been improved. A sealed chamber filled with high-pressure gas is provided between the bottom guard plate and the cooling plate to utilize the pressure of the high-pressure gas to offset the impact of the bottom ball. When the bottom is bumped, the deformation of the bottom guard plate can be reduced. At the same time, the bottom guard plate can be prevented from colliding with the cooling plate and the battery cell due to deformation, thereby enhancing the protection of the cooling plate and the battery cell, reducing the safety risk of damage to the battery cell, and greatly improving the safety of the battery during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 Shown is a three-dimensional schematic diagram of a battery provided by an embodiment of the utility model.

[0019] Figure 2Shown is a schematic diagram of an exploded view of a battery provided by an embodiment of the utility model.

[0020] Figure 3 Shown is a cross-sectional view of a battery provided by an embodiment of the utility model.

[0021] Figure 4 Shown is a partial cross-sectional view of a battery provided by an embodiment of the utility model.

[0022] Figure 5 Shown Figure 4 Enlarged view of part A.

[0023] Figure 6 The figure shows a top view of a bottom guard plate provided by an embodiment of the utility model.

[0024] Figure 7 Shown is a schematic diagram of an exploded view of a battery provided by an embodiment of the utility model from another viewing angle.

[0025] Figure 8 Shown is a three-dimensional schematic diagram of a battery provided by an embodiment of the utility model at another viewing angle.

[0026] Fig. 9 Shown Figure 8 Enlarged view of part B.

[0027] In the above drawings, arrow F1 indicates a first direction, arrow F2 indicates a second direction, and arrow F3 indicates a third direction.

[0028] Description of reference numerals:

[0029] 1 frame, 11 battery cell chambers;

[0030] 2 cooling plate;

[0031] 3 bottom guard plate, 30 sealing chamber, 31 edge plate, 32 main bottom plate, 321 inflation valve, 3212 inflation port, 322 raised ribs,

[0032] 41 first sealing member, 42 second sealing member, 43 pressure detector;

[0033] 5 battery cell assembly, 51 battery cell assembly, 511 battery cell, 512 pole, 513 CCS assembly, 514 bar, 52 support assembly, 521 first support member, 522 second support member, 523 thermal conductive member, 524 structural adhesive. DETAILED DESCRIPTION

[0034] In the description of the application, the meaning of "multiple" is at least two, for example, two, three, etc., unless otherwise clearly and specifically limited. In the embodiment of the present application, all directional indications (such as up, down, left, right, front, back, top, bottom ...) are only used to explain the relative position relationship, motion conditions, etc. between the components under a certain specific posture (as shown in the drawings). If the specific posture changes, the directional indication also changes accordingly. In addition, the terms "including" and "having" and any of their deformations are intended to cover non-exclusive inclusions. For example, the process, method, system, product or equipment comprising a series of steps or units are not limited to the steps or units listed, but optionally also include the steps or units not listed, or optionally also include other steps or units inherent to these processes, methods, products or equipment.

[0035] In addition, the reference to "embodiment" herein means that a particular feature, structure, or characteristic described in conjunction with the embodiment may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0036] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0037] Application Overview

[0038] In recent years, with the rapid development of battery technology, power batteries have been widely used in many fields. For example, in the fields of electric vehicles, power batteries are common energy supply equipment, and their safety plays a vital role for electrical equipment. Among them, cooling and dissipating the battery is one of the important measures to improve the safety of battery operation. Usually, a liquid cooling plate is set at the bottom of the battery to cool and dissipate the heat of the battery cell. However, during use, the bottom of the battery device is easily bumped, resulting in bottom ball impact, causing the bottom guard plate 3 or the liquid cooling plate to deform and squeeze the battery cell. In particular, for battery packs that use an inverted battery cell, the pole faces the bottom of the shell, and the pole is easily damaged after being squeezed, which poses a major safety hazard and affects the safety of the battery and the entire vehicle.

[0039] Some embodiments of the battery box, battery and electrical equipment in the technical solution of the utility model are provided below.

[0040] In an embodiment of the first aspect of the present utility model, a battery box is provided, such as Figure 1 , Figure 2 and Figure 3 As shown, the battery box includes a frame 1 and a bottom guard plate 3. The frame 1 has two openings at both ends in the first direction F1, and a cooling plate 2 is connected to the opening at one end of the frame 1. The cooling plate 2 blocks the opening and is combined with the frame 1 to form a cell chamber 11 for accommodating a cell. The bottom guard plate 3 is arranged on a side of the cooling plate 2 away from the cell chamber 11, and a gap is left between the bottom guard plate 3 and the cooling plate 2; Figure 4 In the example, the periphery of the bottom guard plate 3 is sealed and connected to the cooling plate 2 so that the gap space between the bottom guard plate 3 and the cooling plate 2 forms a sealed chamber 30; wherein, the sealed chamber 30 is filled with high-pressure gas so that the sealed chamber 30 forms an inflatable buffer space.

[0041] In practical applications, such as Figure 3 In the state in the middle, the first direction F1 may be the height direction, and the bottom guard plate 3 and the cooling plate 2 are arranged at the bottom of the frame 1. When a battery cell is installed in the battery cell chamber 11, the high pressure gas in the sealed chamber 30 is used as a buffer layer.

[0042] It should be noted that the frame 1 is not limited to Figure 1 The rectangular structure shown in the figure may also adopt other shapes according to assembly requirements; the size of the frame 1 in the first direction F1 (i.e. Figure 1 The height dimension shown in the figure can be specifically set according to the size specifications of the battery cell to be accommodated, so that the battery cell can be completely placed in the battery cell chamber during assembly. In addition, the cooling plate 2 can specifically adopt a liquid cooling plate structure, which can be connected to the liquid cooling system according to the use requirements so that the coolant can circulate; of course, under low temperature conditions, the cooling plate can also heat and keep the battery cell warm as needed.

[0043] It can be understood that in the existing box structure, due to the overall assembly requirements of the battery, the liquid cooling plate and the bottom guard plate 3 are usually in direct contact or there is only a small gap. Bottom ball impact is easily generated during use, causing the bottom guard plate 3 or the liquid cooling plate to be deformed after being bumped, and then squeezing the battery cell and damaging the battery cell. Especially for inverted battery cells, the pole at the bottom of the battery cell is easily damaged after being squeezed, affecting the safety of the battery.

[0044] In this embodiment, the structural form of the battery box is improved. A sealed chamber 30 filled with high-pressure gas is arranged between the bottom guard plate 3 and the cooling plate 2 to offset the impact of the bottom ball by the pressure of the high-pressure gas. When the bottom is bumped, the deformation of the bottom guard plate 3 can be reduced, and the bottom guard plate 3 can be prevented from bumping against the cooling plate 2 and the battery cell due to deformation, thereby enhancing the protection of the cooling plate 2 and the battery cell, reducing the safety risk of damage to the battery cell, and greatly improving the safety of the battery during use. It is particularly suitable for battery products using inverted batteries, and the protection effect is better.

[0045] In a further embodiment of the present invention, Figure 3 , Figure 4 and Figure 5 As shown, the bottom guard plate 3 specifically includes a main bottom plate 32 and an edge plate 31 connected to the periphery of the main bottom plate 32. The edge plate 31 is detachably connected to the periphery of the cooling plate 2. The main bottom plate 32 is located on the inner side of the edge plate 31 and is recessed in the first direction F1 in a direction away from the cooling plate 2, so that a sealed chamber 30 is formed between the main bottom plate 32 and the cooling plate 2. When the sealed chamber 30 is filled with high-pressure gas, the high-pressure gas can be used to exert a certain pressure on the bottom guard plate 3 to offset the force of the bottom ball impact, thereby reducing the deformation of the bottom guard plate 3 when it is impacted by a bump, which is beneficial to reducing the impact force on the cooling plate 2 caused by the deformation of the bottom guard plate 3, thereby preventing the cooling plate 2 from impacting the battery cell, and achieving a protective effect on the battery cell.

[0046] Furthermore, in a specific implementation, Figures 4 to 6 As shown, the main bottom plate 32 is provided with an air filling port 3212, and an air filling valve 321 is installed at the air filling port 3212, so that the sealed chamber 30 is filled with high-pressure gas, thereby using the pressure of the high-pressure gas to offset the impact of the bottom ball. By providing the air filling port 3212 and the air filling valve 321 on the main bottom plate 32, it is convenient to perform the air filling operation according to the use needs, and the air pressure in the sealed chamber 30 can be controlled as needed. It should be noted that in actual applications, the air filling valve 321 can be set as an integrated structure for filling and exhausting, and can be inflated or exhausted as needed, and of course, an additional exhaust valve can also be provided.

[0047] Furthermore, in another specific implementation, as Figures 4 to 6As shown, a plurality of raised ribs 322 are provided on the main bottom plate 32, and the raised ribs 322 are raised toward one side of the main bottom plate 32, for example, toward the side close to the cooling plate 2 or toward the side far from the cooling plate 2, so as to strengthen the strength of the main bottom plate 32 through the raised ribs 322 and improve the anti-deformation capability. Among them, the plurality of raised ribs 322 are arranged at intervals in the second direction F2 perpendicular to the first direction F1. Preferably, the plurality of raised ribs 322 are arranged at equal intervals, so that the force transmission of the main bottom plate 32 is more uniform, thereby further improving the overall strength. It should be noted that the raised ribs 322 can specifically adopt a strip structure, a block structure or other structural forms, for example Figure 6 Preferably, a corresponding groove structure can also be provided on the raised rib 322 of the rectangular block structure, for example Figure 6 The diamond-shaped grooves shown in FIG. 1 are located on a rectangular block structure.

[0048] In a further embodiment of the present invention, Figure 2 and Figure 3 As shown, the battery case also includes a first seal 41 and a second seal 42. The first seal 41 is arranged between the frame 1 and the cooling plate 2, and the first seal 41 extends along the periphery of the cooling plate 2 and surrounds the cooling plate 2 to seal the gap between the periphery of the cooling plate 2 and the frame 1. The second seal 42 is arranged between the cold plate and the bottom guard plate 3, and the second seal 42 extends along the periphery of the cooling plate 2 and surrounds the cooling plate 2 to seal the gap between the periphery of the cooling plate 2 and the bottom guard plate 3. The first seal 41 and the second seal 42 form a sealed connection between the cooling plate 2 and the frame 1 and the bottom guard plate 3 to meet the battery assembly requirements, absorb the contact tolerance between the frame 1 and the cooling plate 2, and at the same time limit the heat conduction between the frame 1 and the cooling plate 2 through the sealing and heat insulation effect, reduce energy loss, and prevent the leakage of high-pressure gas in the sealed chamber 30.

[0049] Preferably, both the first sealing member 41 and the second sealing member 42 are sealing rings, and the specific shape of the sealing rings is adapted to the peripheral shape of the cooling plate 2 .

[0050] Furthermore, the high-pressure gas includes but is not limited to high-pressure air or inert gas. The inflation pressure of the high-pressure gas is less than 12 bar to prevent the inflation pressure in the sealed chamber 30 from being too high and causing deformation of the bottom guard plate 3 or the cooling plate 2.

[0051] In a further embodiment of the present invention, Figure 5As shown, the battery box also includes a pressure detector 43. The pressure detector 43 is arranged in the sealed chamber 30, and is used to detect the air pressure of the high-pressure gas in the sealed chamber 30; the pressure detector 43 can establish a communication connection with the external control system to transmit the detected air pressure detection data to the external control system, thereby realizing air pressure monitoring of the sealed chamber 30, and facilitating timely adjustment operations when the air pressure is too high or too low, so that the air pressure in the sealed chamber 30 meets the requirements. Specifically, the air pressure detector can adopt a sensing device such as a pressure sensor; in addition, the air pressure detector can establish a communication connection with the external control system in a wired or wireless manner.

[0052] In an embodiment of the second aspect of the present utility model, a battery is provided, such as Figure 1 and Figure 7 As shown, the battery includes a battery box and a battery cell assembly 5 in any embodiment of the first aspect. The battery cell assembly 5 is installed in an inverted manner in the battery cell chamber 11 of the battery box, and the battery cell assembly 5 is connected to the cooling plate 2 so that the pole 512 of the battery cell assembly 5 is located at one end close to the cooling plate 2.

[0053] When in use, the sealed chamber 30 of the battery box is filled with high-pressure gas, and the air pressure of the high-pressure gas can be used to offset the impact of the bottom ball, thereby reducing the deformation of the bottom guard plate 3, and further preventing the cooling plate 2 and the battery cell from being deformed by impact, thereby improving the protection capability, especially for the pole 512 of the battery cell assembly 5.

[0054] Furthermore, if Figure 7 , Figure 8 and Fig. 9 As shown, the battery cell assembly 5 includes a battery cell assembly 51 and a support assembly 52. ​​The battery cell assembly 51 includes one or more battery cells; the support assembly 52 is disposed between the battery cell assembly 51 and the cooling plate 2, and the support assembly 52 is connected to the battery cell assembly 51 and the cooling plate 2 at the same time, so that the battery cell assembly 51 and the cooling plate 2 are connected as a whole through the support assembly 52, and support is provided for the battery cell assembly 51 at the same time.

[0055] Furthermore, if Figure 7 , Figure 8 and Fig. 9In the example, the battery cell assembly 51 specifically includes a plurality of battery cells 511 and a CCS assembly 513 (integrated busbar). The plurality of battery cells 511 are arranged in sequence along the second direction F2, and the pole 512 of each battery cell 511 is located at one end facing the cooling plate 2; the CCS assembly 513 is provided with a bar 514, and is connected to the poles 512 of the plurality of battery cells 511 through the bar 514 (for example, welded), so that the plurality of battery cells 511 are connected in series or in parallel. The support assembly 52 specifically includes a first support member 521 and a second support member 522, a structural adhesive 524 and a heat conductive member 523; the first support member 521 and the second support member 522 are located between the poles 512 of the battery cell 511, and in the first direction F1 (i.e. Figure 7 The height direction shown in the figure), the first support member 521 and the second support member 522 are respectively located on both sides of the CCS assembly 513 to provide support for the CCS assembly 513, so that the installation height of the CCS assembly 513 is compatible with the pole 512 of the battery cell 511. The heat conductor 523 is arranged between the bar 514 and the cooling plate 2, and the two sides of the heat conductor 523 are respectively connected to the bar 514 and the cooling plate 2 to play a heat conduction role between the bar 514 and the cooling plate 2, thereby realizing cooling and heat dissipation of the bar 514 and the battery cell 511. The heat conductor 523 can specifically adopt a structure such as a thermal pad. A structural adhesive 524 is provided on the side of the pole 512 away from the first support member 521, and the cooling plate 2 and the battery cell 511 are connected by the bonding effect of the structural adhesive 524 to achieve fixation of the battery cell 511, and at the same time, it can also play a certain buffering role on the battery cell 511.

[0056] Furthermore, in practical applications, a top cover may be provided according to assembly requirements to seal the top of the frame.

[0057] It should be noted that the battery in this embodiment is also applicable to non-inverted cell assembly methods, such as top-mounted or other forms, which will not be described in detail here.

[0058] In addition, the battery in this embodiment also has all the beneficial effects of the battery box in any embodiment of the first aspect mentioned above, which will not be repeated here.

[0059] In a specific embodiment, Figures 7 to 9 As shown, the number of battery cell components 51 is two groups, in the third direction F3 (i.e. Figure 7 The two groups of battery cell assemblies 51 are arranged in sequence, and each group of battery cell assemblies 51 includes a plurality of battery cell assemblies along the second direction F2 (i.e. Figure 7The battery cells 511 are sequentially arranged along the length direction of the battery box shown in FIG. 1 ; two poles 512 are arranged at the bottom end of each battery cell 511, and the two poles 512 are arranged at intervals in the third direction F3. A CCS assembly 513 is correspondingly arranged between the two poles 512 of each battery cell 511, and in the first direction F1, a first support member 521 is arranged above the CCS assembly 513, and a second support member 522 is arranged below the CCS assembly 513, and the CCS assembly 513 is supported by the first support member 521 and the second support member 522, so that the height of the CCS assembly 513 is adapted to the pole 512; the CCS assembly 513 extends along the second direction F2, and a plurality of tabs 514 are sequentially arranged on both sides of the CCS assembly 513 in the third direction F3, and each tab 514 is electrically connected to an adjacent pole 512, so that the plurality of poles 512 are connected in series or in parallel according to the designed circuit. A heat conducting member 523 is provided between each bar 514 and the cooling plate 2, and the cooling plate 2 cools and dissipates heat from the bar 514, the pole 512, and the battery cell 511 through the heat conducting member 523. In the third direction F3, a structural adhesive 524 is provided on the side of each pole 512 away from the first support member 521, and the bottom end of the battery cell 511 is bonded and fixed to the cooling plate 2 through the structural adhesive 524.

[0060] like Figures 3 to 5 As shown, the sealed chamber 30 of the battery box is filled with high-pressure gas, which is specifically inflated into the sealed chamber 30 through the inflation valve 321; the sealed chamber 30 is also provided with a pressure detector 43 that can communicate with the external control system to detect the inflation pressure in the sealed chamber 30, so as to monitor the air pressure in the sealed chamber 30 so that the inflation pressure meets the use requirements. When the battery is installed in an electric vehicle or other electrical equipment, the air pressure of the high-pressure gas can be used to offset the impact of the bottom ball, reduce the deformation of the bottom guard plate 3 under the impact force, thereby preventing the cooling plate 2 and the battery cell 511 from being damaged by collision, and improving the safety of the battery during use.

[0061] In an embodiment of the third aspect of the utility model, an electric device is also provided, comprising the battery in any embodiment of the second aspect, wherein the battery serves as a power supply device to supply power to the electric device.

[0062] Among them, electrical equipment includes but is not limited to electric vehicles.

[0063] In addition, the electrical equipment in this embodiment also has all the beneficial effects of the battery in any embodiment of the second aspect mentioned above, which will not be repeated here.

[0064] The basic principle of the present invention is described above in conjunction with specific embodiments. However, it should be pointed out that the advantages, strengths, effects, etc. mentioned in the present invention are only examples and not limitations, and it cannot be considered that these advantages, strengths, effects, etc. are required by each embodiment of the present invention. In addition, the specific details disclosed above are only for the purpose of illustration and ease of understanding, not limitation, and the above details do not limit the present invention to being implemented by adopting the above specific details.

[0065] The block diagrams of the devices, apparatuses, equipment and systems involved in the present utility model are only illustrative examples and are not intended to require or imply that they must be connected, arranged and configured in the manner shown in the block diagrams. As will be appreciated by those skilled in the art, these devices, apparatuses, equipment and systems can be connected, arranged and configured in any manner. Words such as "including", "comprising", "having" and the like are open words, referring to "including but not limited to" and can be used interchangeably with them. The words "or" and "and" used here refer to the words "and / or" and can be used interchangeably with them unless the context clearly indicates otherwise. The words "such as" used here refer to the phrase "such as but not limited to" and can be used interchangeably with them. It should also be noted that in the apparatus and equipment of the present utility model, each component can be decomposed and / or recombined. These decompositions and / or recombinations should be regarded as equivalent schemes of the present utility model.

[0066] The above description has been given for the purpose of illustration and description. In addition, this description is not intended to limit the embodiments of the present application to the forms disclosed herein. Although multiple example aspects and embodiments have been discussed above, those skilled in the art will recognize some variations, modifications, changes, additions and sub-combinations thereof. The above description of the disclosed aspects is provided to enable any technician in the field to make or use the utility model. Various modifications to these aspects are very obvious to those skilled in the art, and the general principles defined herein can be applied to other aspects without departing from the scope of the utility model. Therefore, the utility model is not intended to be limited to the aspects shown herein, but in accordance with the widest range consistent with the principles and novel features of this utility model.

[0067] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A battery box, characterized in that: include: A frame (1), wherein two ends of the frame (1) in a first direction (F1) are open and connected, and a cooling plate (2) is connected to an opening at one end of the frame (1), thereby forming a battery cell chamber (11); A bottom guard plate (3) is arranged on a side of the cooling plate (2) away from the battery cell chamber (11), and a gap is left between the bottom guard plate (3) and the cooling plate (2). The periphery of the bottom guard plate (3) is sealed to the cooling plate (2) so that a sealed chamber (30) is formed between the bottom guard plate (3) and the cooling plate (2), and the sealed chamber (30) is filled with high-pressure gas.

2. The battery box according to claim 1, characterized in that: The bottom guard plate (3) comprises an edge plate (31) and a main bottom plate (32); The edge plate (31) is detachably connected to the periphery of the cooling plate (2); The main bottom plate (32) is located on the inner side of the edge plate (31), the main bottom plate (32) is recessed in a direction away from the cooling plate (2), and together with the cooling plate (2) forms the sealed chamber (30).

3. The battery box according to claim 2, characterized in that: The main bottom plate (32) is provided with an inflation port (3212) for installing an inflation valve (321), and inflation is performed into the sealed chamber (30) through the inflation valve (321); and / or The main bottom plate (32) is provided with a plurality of raised ribs (322), the raised ribs (322) protrude toward one side of the main bottom plate (32), and the plurality of raised ribs (322) are arranged at intervals in a second direction (F2) perpendicular to the first direction (F1).

4. The battery box according to claim 2, characterized in that: Also includes: A first sealing member (41) is disposed between the frame (1) and the cooling plate (2) and extends along the periphery of the cooling plate (2); A second sealing member (42) is disposed between the cooling plate (2) and the bottom guard plate (3) and extends along the periphery of the cooling plate (2); Wherein, the first sealing member (41) and the second sealing member (42) are both flexible heat-insulating sealing members.

5. The battery case according to any one of claims 1 to 4, characterized in that: Also includes: A pressure detector (43) is disposed in the sealed chamber (30) and is used to detect the air pressure of the high-pressure gas. The pressure detector (43) is suitable for transmitting air pressure detection data to an external control system.

6. A battery, characterized in that: include: The battery box according to any one of claims 1 to 5; The battery cell assembly (5) is inverted in the battery cell chamber (11) of the battery box and connected to the cooling plate (2).

7. The battery according to claim 6, characterized in that The battery cell assembly (5) comprises a battery cell component (51) and a support component (52); The support assembly (52) is arranged between the battery core assembly (51) and the cooling plate (2), and is connected to the battery core assembly (51) and the cooling plate (2).

8. The battery according to claim 7, characterized in that The battery cell assembly (51) comprises a plurality of battery cells (511) and a CCS assembly (513) arranged in sequence along a second direction (F2); the pole (512) of each battery cell (511) is located at one end facing the cooling plate (2), and the CCS assembly (513) is connected to the poles (512) of the plurality of battery cells (511) via a bar sheet (514); The support assembly (52) comprises a first support member (521), a second support member (522), a structural adhesive (524) and a heat conducting member (523); The first support member (521) and the second support member (522) are arranged between the poles (512) of the battery cell (511) and are respectively located on two sides of the CCS assembly (513) in the first direction (F1) for supporting the CCS assembly (513); The heat conducting member (523) is disposed between the bar sheet (514) and the cooling plate (2), and is respectively connected to the bar sheet (514) and the cooling plate (2); The structural adhesive (524) is arranged on a side of the pole (512) away from the first support member (521), and connects the cooling plate (2) and the battery cell (511).

9. An electrical device, characterized in that: include: A battery as claimed in any one of claims 6 to 8.

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