Battery device and electric equipment

Abstract

The embodiment of the invention provides a battery device and electric equipment, and belongs to the technical field of batteries. The battery device comprises a battery box body, a partition beam is arranged in the battery box body, the partition beam divides a containing space in the battery box body into a first containing cavity and a second containing cavity, and a maintenance part correspondingly communicated with the first containing cavity is formed in the battery box body; the power distribution module is arranged in the first accommodating cavity; and the first battery module and the second battery module are both arranged in the second accommodating cavity, and the first battery module and the second battery module are both electrically connected with the power distribution module through the partition beam. The safety protection performance of the battery device and the electric equipment provided by the invention is relatively high.

Description

Technical Field

[0001] The present application relates to the field of battery technology, and in particular to a battery device and electrical equipment. Background Art

[0002] Battery devices are an important component of electrical equipment such as new energy vehicles and are used to supply power to electrical equipment.

[0003] In the related art, the battery device includes a battery case, a power distribution module and a battery module. The power distribution module and the battery module are both assembled in the battery case. A maintenance section is provided on the battery case at a position corresponding to the power distribution module. The maintenance section faces the passenger compartment of the vehicle. The power distribution module or other component structures in the battery case can be inspected and repaired through the maintenance section.

[0004] However, when the battery module thermally runs away, the flames and smoke generated can easily damage the power distribution module and easily enter the passenger compartment through the maintenance department, resulting in poor safety protection performance of the battery device. Summary of the Invention

[0005] The embodiments of the present application provide a battery device and an electrical device to improve the safety protection performance of the battery device.

[0006] In a first aspect, an embodiment of the present application provides a battery device, comprising:

[0007] A battery box body is provided with a partition beam in the battery box body, which divides the accommodation space in the battery box body into a first accommodation cavity and a second accommodation cavity, and a maintenance portion is provided on the battery box body and is connected to the first accommodation cavity;

[0008] A power distribution module is disposed in the first accommodating cavity;

[0009] The first battery module and the second battery module are both arranged in the second accommodating cavity, and the first battery module and the second battery module are both electrically connected to the power distribution module via the partition beam.

[0010] In a possible embodiment, the battery device provided in the present application further includes a plurality of connecting terminals, a plurality of mounting holes are opened on the partition beam, the mounting holes connect the first accommodating cavity and the second accommodating cavity, the connecting terminals are arranged in a one-to-one correspondence with the mounting holes, and the first battery module and the second battery module are respectively electrically connected to the distribution module through their corresponding connecting terminals.

[0011] In one possible embodiment, the battery device provided in this application has a connection terminal comprising:

[0012] A support block, the support block is sealed and disposed in the mounting hole;

[0013] An electrical connecting plate is connected to the support block, a first end of the electrical connecting plate is located in the first accommodating cavity to be electrically connected to the power distribution module, and a second end of the electrical connecting plate is located in the second accommodating cavity to be electrically connected to the first battery module or the second battery module.

[0014] In one possible embodiment, the battery device provided in the present application has a first battery module having a first electrical connection assembly, and the first battery module is electrically connected to a corresponding connection terminal through the first electrical connection assembly;

[0015] The second battery module has a second electrical connection assembly, and the second battery module is electrically connected to the corresponding connection terminal through the second electrical connection assembly.

[0016] In one possible embodiment, the battery device provided in this application, the first electrical connection assembly includes:

[0017] a first protective shell bracket connected to the first battery module;

[0018] A battery sampling execution unit is provided in the first protective shell support and is electrically connected to the connection terminal;

[0019] A first electrode lead-out piece, two first electrode lead-out pieces are provided, and both first electrode lead-out pieces are provided in the first protective shell support;

[0020] The two first electrode lead-out tabs are electrically connected to the positive electrode and the negative electrode of the first battery module respectively, wherein the first electrode lead-out tab connected to the positive electrode is electrically connected to the battery sampling execution unit, and the first electrode lead-out tab connected to the negative electrode is grounded.

[0021] In one possible embodiment, the battery device provided in the present application includes two second electrical connection assemblies, which are respectively disposed at the positive electrode and the negative electrode of the second battery module. The second electrical connection assemblies include:

[0022] a second protective shell bracket connected to the second battery module;

[0023] A second electrode lead-out piece, the second electrode lead-out piece is arranged in the second protective shell bracket;

[0024] The second electrode lead-out tab is electrically connected to the positive electrode or the negative electrode of the second battery module, and the second electrode lead-out tab is electrically connected to the connection terminal.

[0025] In one possible embodiment, the battery device provided in the present application includes a battery box comprising:

[0026] The tray and the partition beam are integrally provided on the tray, and the partition beam and the tray together enclose a first accommodating cavity and a second accommodating cavity;

[0027] The cover plate is arranged on the tray, and the maintenance part is arranged on the cover plate.

[0028] In a possible embodiment, in the battery device provided in the present application, the tray has an exhaust channel, and the second accommodation cavity is connected to the outside through the exhaust channel.

[0029] In a possible embodiment, the battery device provided by the present application has a cavity on a portion of the side wall of the tray corresponding to the second accommodating cavity;

[0030] An air inlet and an exhaust port are provided on the side wall. The air inlet faces the second accommodating cavity, and the exhaust port faces the outside. The air inlet is connected with the exhaust port through the cavity. The air inlet, the cavity and the exhaust port together form an exhaust channel.

[0031] In a possible embodiment, the battery device provided in the present application, the battery case further includes an explosion-proof valve, which is disposed on the exhaust port and is in communication with the exhaust port.

[0032] In a possible embodiment, in the battery device provided in the present application, the exhaust port is located on a side of the second accommodating cavity away from the first accommodating cavity.

[0033] In a possible embodiment, the battery device provided in the present application has at least two air inlets spaced apart on its side wall.

[0034] In a possible embodiment, the battery device provided in the present application is provided with two exhaust channels, and the two exhaust channels are respectively located on opposite sides of the second accommodating cavity.

[0035] In a possible embodiment, the battery device provided in the present application further includes a heat insulating member, which is disposed on a surface of the partition beam facing the first accommodating cavity and / or the second accommodating cavity.

[0036] In a possible embodiment, in the battery device provided in the present application, a folded portion is provided at the end of the thermal insulation member along its own extension direction, and the folded portion is connected to the adjacent side wall of the battery case.

[0037] In a possible embodiment, in the battery device provided in the present application, the thermal insulation member is further provided on the side wall of the battery box.

[0038] In a possible embodiment, in the battery device provided in the present application, the thermal insulation member is a ceramic thermal insulation belt.

[0039] In a possible embodiment, in the battery device provided in the present application, the first battery module and / or the second battery module includes a plurality of battery cells, and a fireproof interlayer is provided between two adjacent battery cells.

[0040] In one possible embodiment, in the battery device provided herein, the fireproof interlayer is a hydrogel layer.

[0041] In a second aspect, an embodiment of the present application provides an electrical device, comprising a device body and any of the above-mentioned battery devices arranged on the device body.

[0042] The battery device and electrical equipment provided by the embodiments of the present application include a battery case, a power distribution module, a first battery module, and a second battery module, wherein a partition beam is provided in the battery case, and the storage space inside the battery case is divided into a first storage cavity and a second storage cavity by the partition beam. The power distribution module is installed in the first storage cavity, and the first battery module and the second battery module are both installed in the second storage cavity, and both battery modules are electrically connected to the power distribution module through the partition beam. In addition, a maintenance section corresponding to the power distribution module is provided on the battery case, and the maintenance section is connected to the first storage cavity. When at least one of the first battery module and the second battery module thermally runs away, the flame or smoke generated will be blocked by the partition beam, and it will be difficult to transmit from the second storage cavity to the first storage cavity, thereby avoiding damage to the power distribution module in the first storage cavity. Furthermore, because the maintenance section is connected to the first accommodating chamber, flames and smoke cannot escape from the first accommodating chamber through the maintenance section due to the barrier effect of the partition beam. When the battery device is used in a new energy vehicle and the maintenance section faces the vehicle's passenger compartment, flames and smoke generated by thermal runaway of the battery module can be effectively prevented from entering the passenger compartment. This improves the safety and protection performance of the battery device and electrical equipment provided by this application. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0044] Figure 1 A schematic diagram of the overall structure of the battery device provided in an embodiment of the present application;

[0045] Figure 2 for Figure 1 Schematic diagram of the structure of the middle tray and its partition beams;

[0046] Figure 3 for Figure 2 Structural diagram from another perspective;

[0047] Figure 4 for Figure 1 Schematic diagram of the internal structure of the battery box;

[0048] Figure 5 for Figure 4 Schematic diagram of the structure of the first battery module, the second battery module and the partition beam;

[0049] Figure 6 for Figure 5 The diagram in the figure shows the structure of the first battery module and the partition beam;

[0050] Figure 7 for Figure 2 A partial enlarged view of point A in the middle;

[0051] Figure 8 for Figure 7 A partial enlarged view of point B in the middle;

[0052] Figure 9 for Figure 6 A partial enlarged view of point C in the middle.

[0053] Description of reference numerals:

[0054] 100 - battery box; 110 - tray; 111 - first accommodating chamber; 112 - second accommodating chamber; 113 - side wall; 1131 - air inlet; 1132 - exhaust port; 114 - explosion-proof valve; 115 - blocking block; 120 - cover plate; 121 - maintenance section;

[0055] 200-partition beam; 210-mounting hole;

[0056] 300-power distribution module;

[0057] 400 - first battery module; 410 - first electrical connection assembly; 411 - first housing bracket; 4111 - first battery cell bracket; 4112 - first plastic bracket; 4113 - first protective cover; 412 - battery sampling execution unit; 413 - first electrode lead-out tab; 420 - first battery cell;

[0058] 500 - second battery module; 510 - second electrical connection assembly; 511 - second housing bracket; 5111 - second battery cell bracket; 5112 - second plastic bracket; 5113 - second protective cover; 512 - second electrode lead-out tab; 520 - second battery cell;

[0059] 600-connection terminal; 610-support block; 620-electrical connection piece;

[0060] 700-heat insulation; 710-folding part.

[0061] The above drawings illustrate specific embodiments of the present application, which will be described in more detail below. These drawings and the textual description are not intended to limit the scope of the present application in any way, but rather to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments. DETAILED DESCRIPTION

[0062] To make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention. The following embodiments and features in the embodiments can be combined with each other unless there is a conflict.

[0063] In related technologies, a battery device includes a battery case, a power distribution module, and a battery module. The battery case has a storage space within which the power distribution module and battery module are assembled. A maintenance access is provided on the battery case at a location corresponding to the power distribution module. The access communicates with the storage space and faces the vehicle's passenger compartment. A maintenance cover is provided on the access to open and close the access. When the cover is open, the power distribution module or other components within the battery case can be inspected through the access.

[0064] Currently, a sealing foam is usually provided between the maintenance cover and the maintenance opening to achieve sealing between the maintenance cover and the maintenance opening.

[0065] However, when a battery module experiences thermal runaway, the resulting flames and smoke can easily damage the power distribution module within the same enclosure. Furthermore, as the flames and smoke spread, the sealing foam is unable to effectively block the flames and smoke generated by the battery module, allowing them to easily enter the passenger compartment through the gap between the maintenance cover and the access hatch. Consequently, the battery assembly's safety protection is poor.

[0066] In order to overcome the defects in the prior art, the battery device and electrical equipment provided in the embodiments of the present application include a battery case, a power distribution module, a first battery module, and a second battery module, wherein a partition beam is provided in the battery case, and the storage space inside the battery case is divided into a first storage cavity and a second storage cavity by the partition beam. The power distribution module is installed in the first storage cavity, and the first battery module and the second battery module are both installed in the second storage cavity, and both battery modules are electrically connected to the power distribution module through the partition beam. In addition, a maintenance part corresponding to the power distribution module is provided on the battery case, and the maintenance part is connected to the first storage cavity. When at least one of the first battery module and the second battery module thermally runs away, the flame or smoke generated will be blocked by the partition beam, and it will be difficult to transmit from the second storage cavity to the first storage cavity, thereby avoiding damage to the power distribution module in the first storage cavity. Furthermore, because the maintenance section is connected to the first accommodating chamber, flames and smoke cannot escape from the first accommodating chamber through the maintenance section due to the barrier effect of the partition beam. When the battery device is used in a new energy vehicle and the maintenance section faces the vehicle's passenger compartment, flames and smoke generated by thermal runaway of the battery module can be effectively prevented from entering the passenger compartment. This improves the safety and protection performance of the battery device and electrical equipment provided by this application.

[0067] The content of the present invention will be described in detail below with reference to the accompanying drawings so that those skilled in the art can understand the content of the present invention more clearly and in detail.

[0068] Reference Figures 1 to 4 As shown, an embodiment of the present application provides a battery device, including:

[0069] The battery case 100 includes a partition beam 200 disposed therein. The partition beam 200 separates the accommodation space within the battery case 100 into a first accommodation cavity 111 and a second accommodation cavity 112. The battery case 100 includes a maintenance portion 121 that communicates with the first accommodation cavity 111.

[0070] The power distribution module 300 is disposed in the first accommodating cavity 111;

[0071] The first battery module 400 and the second battery module 500 are both disposed in the second accommodating cavity 112 , and are both electrically connected to the power distribution module 300 via the partition beam 200 .

[0072] It can be understood that a partition beam 200 is provided in the battery box 100, and the two end faces of the partition beam 200 in the extension direction are respectively connected to the two opposite side walls 113 of the battery box 100, and the upper and lower side faces in the extension direction of the partition beam 200 can be respectively connected to the bottom and top surfaces inside the battery box 100, so that the storage space inside the battery box 100 can be divided into two parts by the partition beam 200, namely the first storage cavity 111 and the second storage cavity 112.

[0073] Among them, the first accommodating cavity 111 can be used to assemble the distribution module 300, and the second accommodating cavity 112 can be used to assemble the first battery module 400 and the second battery module 500, so that the distribution module 300 is physically isolated from the first battery module 400 and the second battery module 500 by using the partition beam 200, so as to avoid the distribution module 300 and the first battery module 400 and the second battery module 500 being in the same accommodating space, and the first battery module 400 and the second battery module 500 are also electrically connected to the distribution module 300 through the partition beam 200 respectively, so as to ensure that the distribution module 300 distributes electrical energy to the first battery module 400 and the second battery module 500.

[0074] A maintenance section 121 is provided on the battery case 100 at a position corresponding to the first accommodating cavity 111. For example, the maintenance section 121 may comprise a maintenance port provided on the battery case 100 and a maintenance cover provided over the maintenance port. The maintenance cover and the maintenance port are removable or openably connected. When the maintenance cover is removed or opened to expose the maintenance port, maintenance and inspection of the power distribution module 300 and other related structures within the first accommodating cavity 111 can be performed through the maintenance port.

[0075] And, exemplarily, the first battery module 400 is a starting power supply battery module, which is used to output a large current to the electrical equipment in a short time under the distribution of the power distribution module 300 when the electrical equipment connected to the battery device is started, so that the electrical equipment can be started; and the second battery module 500 is a power supply battery module, which is used to continuously provide stable current to the electrical equipment under the distribution of the power distribution module 300 after the electrical equipment is driven, so as to maintain smooth operation of the electrical equipment.

[0076] Specifically, the first battery module 400 and the second battery module 500 can be placed side by side according to the space allocation requirements of the second accommodating cavity 112, or in some embodiments, the first battery module 400 and the second battery module 500 can be stacked up and down, which is not limited in this application.

[0077] Therefore, the battery device provided in the embodiment of the present application includes a battery case 100, a power distribution module 300, a first battery module 400 and a second battery module 500, wherein a partition beam 200 is provided in the battery case 100, and the storage space inside the battery case 100 is divided into a first storage cavity 111 and a second storage cavity 112 by the partition beam 200, the power distribution module 300 is installed in the first storage cavity 111, the first battery module 400 and the second battery module 500 are both installed in the second storage cavity 112, and the two battery modules are electrically connected to the power distribution module 300 through the partition beam 200.

[0078] When at least one of the first battery module 400 and the second battery module 500 experiences thermal runaway, the flame or smoke generated will be blocked by the partition beam 200, making it difficult for it to be transmitted from the second accommodating chamber 112 to the first accommodating chamber 111, thereby preventing the power distribution module 300 in the first accommodating chamber 111 from being damaged. Furthermore, since the maintenance section 121 is connected to the first accommodating chamber 111, the flame and smoke cannot be discharged from the first accommodating chamber 111 through the maintenance section 121 due to the blocking effect of the partition beam 200. When the battery device is used in a new energy vehicle and the maintenance section 121 faces the passenger compartment of the vehicle, it can also effectively prevent the flame and smoke generated by thermal runaway of the battery module from entering the passenger compartment. In this way, the safety protection performance of the battery device provided by the present application is improved.

[0079] In some embodiments, reference Figures 2 to 6 As shown, the battery device also includes a plurality of connecting terminals 600, and a plurality of mounting holes 210 are opened on the partition beam 200. The mounting holes 210 connect the first accommodating cavity 111 and the second accommodating cavity 112. The connecting terminals 600 are arranged in a one-to-one correspondence with the mounting holes 210. The first battery module 400 and the second battery module 500 are respectively electrically connected to the distribution module 300 through their respective corresponding connecting terminals 600.

[0080] It can be understood that compared to directly passing wires through the partition beam 200 for electrical connection, the embodiment of the present application provides a plurality of mounting holes 210 on the partition beam 200, and correspondingly provides connecting terminals 600 in the mounting holes 210, so that the first battery module 400 and the second battery module 500 are respectively electrically connected to their corresponding connecting terminals 600, and the connecting terminals 600 are further electrically connected to the distribution module 300, so that the electrical connection structure between the first battery module 400 and the distribution module 300, and the second battery module 500 and the distribution module 300 is more stable and reliable.

[0081] In addition, by using the connecting terminal 600 for electrical connection, the first battery module 400, the second battery module 500 and the distribution module 300 can be relatively independent. During installation or subsequent maintenance and overhaul, relevant operations can be performed more conveniently on a single battery module or distribution module 300, making the disassembly, assembly, maintenance and modification of the battery device convenient and efficient.

[0082] Further, refer to Figures 7 to 9 As shown, the connection terminal 600 includes:

[0083] A support block 610 , the support block 610 is sealed and disposed in the mounting hole 210 ;

[0084] The electrical connecting piece 620 is connected to the support block 610, and the first end of the electrical connecting piece 620 is located in the first accommodating cavity 111 to be electrically connected to the distribution module 300, and the second end of the electrical connecting piece 620 is located in the second accommodating cavity 112 to be electrically connected to the first battery module 400 or the second battery module 500.

[0085] It can be understood that by setting the support block 610 and sealing the support block 610 with the mounting hole 210, the flame or smoke generated when the first battery module 400 and the second battery module 500 thermally run away can be effectively prevented from entering the first accommodating cavity 111 through the fitting gap between the connecting terminal 600 and the mounting hole 210, thereby effectively ensuring the partition effect of the partition beam 200 on the first accommodating cavity 111 and the second accommodating cavity 112.

[0086] For example, support block 610 may be a ceramic block or a polyphenylene sulfide (PPS) block to ensure the insulation and fire resistance of support block 610. Furthermore, to ensure more stable and reliable installation of support block 610, an aluminum spacer may be added between support block 610 and mounting hole 210, although this application does not impose any restrictions on this.

[0087] The electrical connection piece 620 is connected to the support block 610. Specifically, the electrical connection piece 620 is sealed and inserted into the support block 610, so that the support block 610 provides stable installation support for the electrical connection piece 620 and further ensures the sealing performance between the electrical connection piece 620 and the support block 610. The two ends of the electrical connection piece 620 in the extension direction are respectively located on opposite sides of the support block 610. After the support block 610 is inserted into the mounting hole 210, the first end of the electrical connection piece 620 is located in the first accommodating cavity 111, and the second end of the electrical connection piece 620 is located in the second accommodating cavity 112, thereby facilitating the electrical connection between the battery module and the power distribution module 300.

[0088] And, in some embodiments, reference Figure 5 、 Figure 6 、 Figure 8and Figure 9 As shown, the first battery module 400 has a first electrical connection assembly 410 , and the first battery module 400 is electrically connected to the corresponding connection terminal 600 through the first electrical connection assembly 410 ;

[0089] The second battery module 500 has a second electrical connection assembly 510 , and the second battery module 500 is electrically connected to the corresponding connection terminal 600 via the second electrical connection assembly 510 .

[0090] It is easy to understand that by setting a first electrical connection component 410 in the first battery module 400 and a second electrical connection component 510 in the second battery module 500, the first battery module 400 and the second battery module 500 can be electrically connected to the connection terminal 600 more safely and conveniently, respectively, to ensure the safety performance of the battery device during use.

[0091] Among them, reference Figure 6 and Figure 8 As shown, the first electrical connection assembly 410 includes:

[0092] A first protective shell bracket 411 , the first protective shell bracket 411 is connected to the first battery module 400 ;

[0093] The battery sampling execution unit 412 is disposed in the first shield bracket 411 and is electrically connected to the connection terminal 600;

[0094] A first electrode lead-out piece 413 , two first electrode lead-out pieces 413 are provided, and both first electrode lead-out pieces 413 are provided in the first protective shell support 411 ;

[0095] The two first electrode lead-out tabs 413 are electrically connected to the positive and negative electrodes of the first battery module 400 , respectively. The first electrode lead-out tab 413 connected to the positive electrode is electrically connected to the battery sampling execution unit 412 , and the first electrode lead-out tab 413 connected to the negative electrode is grounded.

[0096] The first battery module 400 has a plurality of first battery cells 420 electrically connected in sequence. The positive electrode of the first first battery cell 420 serves as the positive electrode of the first battery module 400, and the negative electrode of the last first battery cell 420 serves as the negative electrode of the first battery module 400. The first protective shell bracket 411 includes a first battery cell bracket 4111, a first plastic bracket 4112, and a first protective cover 4113. The first battery cell bracket 4111 is adapted to be disposed at the end of the first battery module 400 and exposes the positive or negative electrode of the first battery cell 420 of the first battery module 400. The first plastic bracket 4112 is snapped onto the first battery cell bracket 4111. The first protective cover 4113 covers the first battery cell bracket 4111 and the first plastic bracket 4112 to provide physical protection.

[0097] The first protective shell bracket 411 is embedded with a battery sampling execution unit 412 and two first electrode lead-out pieces 413. The two first electrode lead-out pieces 413 are electrically connected to the positive and negative electrodes of the first battery cell 420, respectively. The first electrode lead-out piece 413 connected to the positive electrode of the first battery cell 420 is electrically connected to the battery sampling execution unit 412. The battery sampling execution unit 412 is further electrically connected to the connection terminal 600. The connection terminal 600 is electrically connected to the power distribution module 300 through a copper busbar to realize the current output of the first battery module 400. The first electrode lead-out piece 413 connected to the negative electrode of the first battery cell 420 is grounded through the battery case 100 to ensure the safety performance of the first battery module 400.

[0098] And, refer to Figure 5 and Figure 9 As shown, two second electrical connection components 510 are provided. The two second electrical connection components 510 are respectively provided at the positive electrode and the negative electrode of the second battery module 500. The second electrical connection components 510 include:

[0099] A second shielding bracket 511 , which is connected to the second battery module 500 ;

[0100] A second electrode lead-out piece 512 , which is disposed in the second shielding bracket 511 ;

[0101] The second electrode lead-out tab 512 is electrically connected to the positive electrode or the negative electrode of the second battery module 500 , and the second electrode lead-out tab 512 is electrically connected to the connection terminal 600 .

[0102] Similarly, the second battery module 500 has multiple second battery cells 520 electrically connected in sequence. The positive electrode of the first second battery cell 520 can serve as the positive electrode of the second battery module 500, and the negative electrode of the last second battery cell 520 can serve as the negative electrode of the second battery module 500. The number of second battery cells 520 is greater than the number of first battery cells 420. Furthermore, both the first battery cell 420 and the second battery cell 520 can be blade batteries, which have the characteristics of high safety performance, high energy density, and a regular shape that facilitates arrangement. This makes the first battery module 400 and the second battery module 500 safer and more reliable.

[0103] The second protective shell bracket 511 also includes a second battery cell bracket 5111 , a second plastic bracket 5112 and a second protective cover 5113 . The assembly structure thereof can be set with reference to the first protective shell bracket 411 , and will not be described in detail in this application.

[0104] Each of the two second shielding brackets 511 is embedded with a second electrode lead-out tab 512. The two second electrode lead-out tabs 512 are respectively connected to the positive and negative electrodes of the second battery module 500 and are electrically connected to the connection terminal 600. The second electrode lead-out tab 512 corresponding to the negative electrode of the second battery module 500 is electrically connected to the power distribution module 300 via the connection terminal 600 and the copper busbar. The connection terminal 600 connected to the second electrode lead-out tab 512 corresponding to the positive electrode of the second battery module 500 is reserved for electrical connection to electrical equipment.

[0105] In some embodiments, reference Figures 1 to 4 As shown, the battery box 100 includes:

[0106] The tray 110 and the partition beam 200 are integrally provided on the tray 110 , and the partition beam 200 and the tray 110 together enclose a first accommodating cavity 111 and a second accommodating cavity 112 ;

[0107] The cover plate 120 is covered on the tray 110 , and the maintenance portion 121 is disposed on the cover plate 120 .

[0108] The tray 110 includes a bottom plate and sidewalls 113 disposed around the bottom plate. The partition beams 200 are integrally disposed on the bottom plate and connected to the sidewalls 113 to ensure the structural strength of the partition beams 200 and the seal between the partition beams 200 and the tray 110. For example, the partition beams 200 can be integrally formed with the tray 110 or welded to the tray 110, but this application does not limit this.

[0109] The cover plate 120 is arranged on the side of the side wall 113 and the partition beam 200 facing away from the bottom plate. After the first battery module 400, the second battery module 500, the distribution module 300 and other related structures are assembled, the cover plate 120 is connected to the tray 110 by fasteners or welded to ensure the sealing of the first accommodating cavity 111 and the second accommodating cavity 112.

[0110] The maintenance portion 121 is specifically a maintenance port opened on the cover plate 120 and a maintenance cover provided on the maintenance port. Such a configuration facilitates maintenance and repair of the power distribution module 300 in the first accommodating cavity 111 .

[0111] Among them, reference Figure 3 As shown, the tray 110 has an exhaust channel, and the second accommodating cavity 112 is connected to the outside through the exhaust channel.

[0112] Figure 3The dotted arrow in the middle indicates the exhaust direction of the exhaust duct. It is understood that by providing an exhaust duct on the tray 110 that connects the second accommodating cavity 112 with the outside world, when the first battery module 400 and the second battery module 500 within the second accommodating cavity 112 experience thermal runaway, the exhaust duct can be used to specifically guide the smoke, flames, and harmful gases generated by the thermal runaway of the battery modules, thereby preventing the spread of flames and smoke that is difficult to control and improving the safety and protection performance of the battery device.

[0113] Specifically, refer to Figures 1 to 4 ,as well as Figure 7 As shown, the side wall 113 of the tray 110 corresponding to the second receiving cavity 112 has a cavity;

[0114] An air inlet 1131 and an exhaust port 1132 are provided on the side wall 113. The air inlet 1131 faces the second accommodating cavity 112, and the exhaust port 1132 faces the outside. The air inlet 1131 is connected to the exhaust port 1132 through the cavity. The air inlet 1131, the cavity and the exhaust port 1132 together form an exhaust channel.

[0115] The side walls 113 of the tray 110 can be configured as hollow plate structures. By configuring the side walls 113 of the tray 110 as cavities, the cavities can be used as exhaust passages to control the flow of smoke and flames, while also reducing the weight of the tray 110 and improving the thermal insulation performance of the tray 110. All of the side walls 113 of the tray 110 can be configured as hollow plates with cavities, and blocking blocks 115 can be provided in the side walls 113 corresponding to the first accommodating cavity 111 to prevent flames and smoke from flowing into the first accommodating cavity 111. Alternatively, only the side walls 113 corresponding to the second accommodating cavity 112 can be configured as a hollow structure, while the portion of the side walls 113 corresponding to the first accommodating cavity 111 can be configured as a solid structure, thereby also achieving the effect of preventing flames and smoke from flowing into the first accommodating cavity 111. This is not a limitation of the present application.

[0116] An air inlet 1131 is opened on the inner surface of the side wall 113 facing the second accommodating cavity 112, and the air inlet 1131 is connected to the cavity of the side wall 113, and an exhaust port 1132 is opened on the outer surface of the side wall 113 facing away from the second accommodating cavity 112, and the exhaust port 1132 is also connected to the cavity of the side wall 113. In this way, when the battery module thermally runs away, smoke and flames can enter the cavity from the air inlet 1131, flow along the cavity to the exhaust port 1132 and be discharged, thereby achieving the effect of directional emission of smoke and flames, and further preventing the smoke and flames from spreading toward the first accommodating cavity 111.

[0117] It should be noted that when the first battery module 400 and the second battery module 500 experience thermal runaway, high-temperature gas typically accumulates on the front and rear sides of the battery modules, i.e., the side of the battery modules close to the partition beam 200 and the side of the battery modules away from the partition beam 200. To address this issue, the air inlets 1131 can be correspondingly disposed on the two side walls 113 connected to the ends of the partition beam 200, and located at positions on the side walls 113 relatively close to or away from the partition beam 200, so that the air inlets 1131 correspond to the heat accumulation locations of the battery modules, facilitating the timely discharge of high-temperature gas.

[0118] And, in some embodiments, reference Figures 1 to 3 As shown, the battery box 100 further includes an explosion-proof valve 114 , which is disposed on the exhaust port 1132 and communicates with the exhaust port 1132 .

[0119] It can be understood that by providing an explosion-proof valve 114 at the exhaust port 1132, the sealing of the second accommodating chamber 112 of the battery device can be ensured under normal conditions. In addition, when the battery module thermally runs away, the opening function of the explosion-proof valve 114 can be utilized to effectively guide the high-temperature flue gas, thereby avoiding the explosion of the battery device and ensuring the safety performance of the battery device.

[0120] During specific implementation, it is necessary to set the opening pressure of the explosion-proof valve 114 to be lower than the bursting pressure of the cover 120 and the bursting pressure of the side wall 113 of the battery box 100, so that the explosion-proof valve 114 can open smoothly and the high-temperature flue gas can be discharged smoothly from the explosion-proof valve 114 through the exhaust port 1132 to avoid causing the cover 120 or the side wall 113 to burst.

[0121] In some embodiments, reference Figures 1 to 3 As shown, the exhaust port 1132 is located on a side of the second accommodating chamber 112 away from the first accommodating chamber 111 .

[0122] It can be understood that setting the exhaust port 1132 away from the first accommodating cavity 111 can make the exhaust port 1132 as far away from the distribution module 300 as possible, so as to reduce the impact of the high-temperature flue gas discharged from the exhaust port 1132 on the distribution module 300 and avoid the distribution module 300 from being damaged by high temperature.

[0123] In addition, in some embodiments, reference Figures 1 to 4 ,as well as Figure 7 As shown, the side wall 113 is provided with at least two air inlets 1131 spaced apart from each other.

[0124] This arrangement can improve the exhaust efficiency of the exhaust channel by increasing the number of exhaust ports 1132. Furthermore, the air inlets 1131 are spaced apart along the sidewall 113 so that the air inlets 1131 correspond to the heat accumulation locations of the battery modules, making the exhaust channel arrangement more targeted and the exhaust more stable and reliable.

[0125] Further, refer to Figure 3 As shown, two exhaust channels are provided, and the two exhaust channels are respectively located on two opposite sides of the second accommodating cavity 112 .

[0126] It can be understood that by providing two sets of exhaust channels, at least four air inlets 1131 and at least two explosion-proof valves 114 can be formed on the tray 110, effectively increasing the exhaust and explosion-proof capability of the battery device, enabling it to discharge high-temperature smoke more quickly, maintain the pressure inside the battery device stable, and improve the reliability and stability of the battery device.

[0127] Furthermore, in some embodiments, reference Figure 5 、 Figure 6 、 Figure 8 and Figure 9 As shown, the battery device further includes a heat insulating member 700 , which is disposed on a surface of the partition beam 200 facing the first accommodating cavity 111 and / or the second accommodating cavity 112 .

[0128] By providing the thermal insulation 700 on two opposing surfaces of the partition beam 200, the thermal insulation effect of the partition beam 200 can be effectively improved, effectively preventing heat from passing from the second accommodating cavity 112 to the first accommodating cavity 111. In a specific implementation, the thermal insulation 700 can be bonded only to the side of the partition beam 200 facing the first accommodating cavity 111, or only to the side of the partition beam 200 facing the second accommodating cavity 112, or, as shown in the figures of this application, the thermal insulation 700 can be bonded to both opposing surfaces of the partition beam 200, and this application does not impose any restrictions on this.

[0129] In order to ensure smooth installation of the connecting terminal 600 , an avoidance hole corresponding to the installation hole 210 of the partition beam 200 may be provided on the thermal insulation member 700 .

[0130] And, refer to Figure 5 、 Figure 6 、 Figure 8 and Figure 9 As shown, a folded portion 710 is provided at the end of the heat insulating member 700 along its own extension direction, and the folded portion 710 is connected to the adjacent side wall 113 of the battery box 100 .

[0131] By providing a folding portion 710 at the end of the thermal insulation member 700 in the extension direction, the thermal insulation member 700 can cover the entire surface of the partition beam 200, ensuring the thermal insulation effect of the partition beam 200, while further crossing the corner between the partition beam 200 and the side wall 113, so that the thermal insulation member 700 is connected to the adjacent side wall 113 on the tray 110, thereby achieving a more comprehensive thermal insulation protection effect.

[0132] And in other embodiments, refer to Figure 5 、 Figure 6 、 Figure 8and Figure 9 As shown, the thermal insulation member 700 is also disposed on the side wall 113 of the battery box 100 .

[0133] With this arrangement, the thermal insulation member 700 can be used to enhance the overall protection of the battery box 100. The thermal insulation member 700 can be disposed on the side wall 113 opposite the partition beam 200 within the second accommodating cavity 112, or on the side wall 113 opposite the partition beam 200 within the first accommodating cavity 111, or on both side walls 113. Furthermore, the thermal insulation member 700 can also be disposed on the side walls 113 adjacent to the partition beam 200 on the tray 110, and this application does not impose any restrictions on this.

[0134] The thermal insulation element 700 is a ceramic insulation tape, specifically a glass fiber composite double-sided ceramic silicone rubber or other similar materials with excellent fireproof and heat-insulating properties. As will be appreciated, the glass fiber composite double-sided ceramic silicone rubber has high strength and toughness, is easy to bend and bond, and has good heat resistance, high thermal stability and heat aging resistance. It is not susceptible to softening or performance degradation due to high temperatures, and can effectively ensure the thermal protection performance of the battery device.

[0135] In addition, the sides of the power distribution module may be covered with fireproof cotton, such as ceramic cotton or other materials with similar performance, to provide targeted high-temperature insulation protection for the power distribution module.

[0136] In some other embodiments, the first battery module 400 and / or the second battery module 500 includes a plurality of battery cells, and a fireproof interlayer is provided between two adjacent battery cells.

[0137] It can be understood that the first battery module 400 can be formed by three or more blade batteries as the first battery cells 420, which are arranged and connected in sequence. The second battery module 500 can also be formed by multiple blade batteries as the second battery cells 520, and the number of second battery cells 520 must be more than the number of first battery cells 420.

[0138] Providing a fireproof interlayer between the cells of the first battery module 400 and the second battery module 500 can form a fireproof structure between the cells, thereby improving the thermal safety performance between the battery modules. In specific implementations, it is possible to consider providing a fireproof interlayer only between two adjacent cells of the first battery module 400, or only between two adjacent cells of the second battery module 500, or between the cells of both battery modules, or even between the two battery modules, without limitation in this application.

[0139] The fireproof interlayer is a hydrogel layer. By setting the fireproof interlayer as a hydrogel layer or other material with similar properties, when the battery cell experiences thermal runaway, the hydrogel layer can effectively block heat transfer between the battery cells, slowing the propagation rate of thermal runaway in the battery device.

[0140] An embodiment of the present application further provides an electrical device, comprising a device body and a battery device according to any of the above embodiments arranged on the device body.

[0141] The battery device has been described in detail in the above embodiments and will not be described in detail here. For example, the power-consuming device may be a new energy vehicle.

[0142] The electrical equipment provided in the embodiments of the present application is provided with a battery device, which includes a battery case 100, a power distribution module 300, a first battery module 400, and a second battery module 500. A partition beam 200 is provided within the battery case 100, which divides the internal storage space of the battery case 100 into a first storage cavity 111 and a second storage cavity 112. The power distribution module 300 is installed in the first storage cavity 111, and the first battery module 400 and the second battery module 500 are both installed in the second storage cavity 112. Both battery modules are electrically connected to the power distribution module 300 via the partition beam 200. Furthermore, a maintenance section 121 corresponding to the power distribution module 300 is provided on the battery case 100, and the maintenance section 121 is connected to the first storage cavity 111. When at least one of the first battery module 400 and the second battery module 500 thermally runs away, the generated flame or smoke will be blocked by the partition beam 200, and it will be difficult to transmit from the second accommodating cavity 112 to the first accommodating cavity 111, thereby avoiding damage to the distribution module 300 in the first accommodating cavity 111.

[0143] Furthermore, because the maintenance section 121 is in communication with the first accommodating chamber 111, flames and smoke cannot escape from the first accommodating chamber 111 through the maintenance section 121 due to the blocking effect of the partition beam 200. When the battery device is used in a new energy vehicle and the maintenance section 121 faces the passenger compartment of the vehicle, flames and smoke generated by thermal runaway of the battery module can be effectively prevented from entering the passenger compartment. This improves the safety protection performance of the electrical equipment provided by this application.

[0144] It should be noted that references in this specification to "one embodiment," "an embodiment," "an exemplary embodiment," "some embodiments," and the like indicate that the described embodiment may include a particular feature, structure, or characteristic, but not necessarily every embodiment includes that particular feature, structure, or characteristic. Furthermore, such phrases do not necessarily refer to the same embodiment. Furthermore, when a particular feature, structure, or characteristic is described in conjunction with an embodiment, it is within the knowledge of those skilled in the art to implement such feature, structure, or characteristic in conjunction with other embodiments, whether explicitly described or not.

[0145] Generally speaking, terms should be understood, at least in part, based on the context in which they are used. For example, as used herein, the term "one or more" can be used to describe any feature, structure, or characteristic in the singular sense, or can be used to describe a combination of features, structures, or characteristics in the plural sense, depending at least in part on the context. Similarly, terms such as "a," "an," or "the" can also be understood to convey either singular or plural usage, depending at least in part on the context.

[0146] It should be readily understood that “on,” “above,” and “over” in this application should be interpreted in the broadest manner, such that “on” means not only “directly on something,” but also includes “on something” with intervening features or layers therebetween, and “above” or “over” includes not only the meaning of “above” or “over,” but also includes “above” or “over” with no intervening features or layers therebetween (i.e., directly on something).

[0147] Additionally, spatially relative terms, such as "below," "beneath," "beneath," "above," and the like, may be used herein for ease of description to describe the relationship of one element or feature to other elements or features as depicted in the figures. Spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. The device may be otherwise oriented (rotated 90° or at other orientations), and the spatially relative descriptors used herein should be interpreted accordingly.

[0148] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A battery device, characterized in that: include: A battery box (100), wherein a partition beam (200) is provided in the battery box (100), wherein the partition beam (200) separates the accommodation space in the battery box (100) into a first accommodation cavity (111) and a second accommodation cavity (112), and a maintenance portion (121) corresponding to and communicating with the first accommodation cavity (111) is provided on the battery box (100); A power distribution module (300), the power distribution module (300) being arranged in the first accommodating cavity (111); A first battery module (400) and a second battery module (500), wherein the first battery module (400) and the second battery module (500) are both arranged in the second accommodating cavity (112), and the first battery module (400) and the second battery module (500) are both electrically connected to the power distribution module (300) via the partition beam (200).

2. The battery device according to claim 1, wherein: The invention also includes a plurality of connection terminals (600), a plurality of mounting holes (210) are provided on the partition beam (200), the mounting holes (210) are connected to the first accommodating cavity (111) and the second accommodating cavity (112), the connection terminals (600) are arranged in a one-to-one correspondence with the mounting holes (210), and the first battery module (400) and the second battery module (500) are respectively electrically connected to the power distribution module (300) via the corresponding connection terminals (600).

3. The battery device according to claim 2, characterized in that The connecting terminal (600) comprises: a support block (610), the support block (610) being sealed and disposed in the mounting hole (210); An electrical connecting piece (620), the electrical connecting piece (620) being connected to the supporting block (610), a first end of the electrical connecting piece (620) being located in the first accommodating cavity (111) to be electrically connected to the power distribution module (300), and a second end of the electrical connecting piece (620) being located in the second accommodating cavity (112) to be electrically connected to the first battery module (400) or the second battery module (500) accordingly.

4. The battery device according to claim 2, wherein: The first battery module (400) has a first electrical connection component (410), and the first battery module (400) is electrically connected to the corresponding connection terminal (600) via the first electrical connection component (410); The second battery module (500) has a second electrical connection component (510), and the second battery module (500) is electrically connected to the corresponding connection terminal (600) via the second electrical connection component (510).

5. The battery device according to claim 4, characterized in that The first electrical connection assembly (410) comprises: a first protective shell bracket (411), the first protective shell bracket (411) being connected to the first battery module (400); a battery sampling execution unit (412), the battery sampling execution unit (412) being arranged in the first protective shell support (411) and electrically connected to the connection terminal (600); a first electrode lead-out piece (413), wherein two first electrode lead-out pieces (413) are provided, and both first electrode lead-out pieces (413) are provided in the first protective shell support (411); The two first electrode lead-out pieces (413) are electrically connected to the positive electrode and the negative electrode of the first battery module (400), respectively, wherein the first electrode lead-out piece (413) connected to the positive electrode is electrically connected to the battery sampling execution unit (412), and the first electrode lead-out piece (413) connected to the negative electrode is grounded.

6. The battery device according to claim 4, characterized in that Two second electrical connection components (510) are provided, and the two second electrical connection components (510) are respectively provided at the positive electrode and the negative electrode of the second battery module (500). The second electrical connection component (510) includes: a second protective shell bracket (511), the second protective shell bracket (511) being connected to the second battery module (500); a second electrode lead-out piece (512), the second electrode lead-out piece (512) being arranged in the second protective shell support (511); The second electrode lead-out piece (512) is electrically connected to the positive electrode or the negative electrode of the second battery module (500), and the second electrode lead-out piece (512) is electrically connected to the connection terminal (600).

7. The battery device according to claim 1, wherein: The battery box (100) comprises: A tray (110), wherein the partition beam (200) is integrally provided on the tray (110), and the partition beam (200) and the tray (110) jointly enclose the first accommodating cavity (111) and the second accommodating cavity (112); A cover plate (120), the cover plate (120) is covered on the tray (110), and the maintenance portion (121) is provided on the cover plate (120).

8. The battery device according to claim 7, characterized in that The tray (110) has an exhaust channel, and the second accommodating cavity (112) is connected to the outside through the exhaust channel.

9. The battery device according to claim 8, characterized in that A portion of the side wall (113) of the tray (110) corresponding to the second accommodating cavity (112) has a cavity; An air inlet (1131) and an exhaust port (1132) are provided on the side wall (113), the air inlet (1131) faces the second accommodating cavity (112), and the exhaust port (1132) faces the outside world. The air inlet (1131) is connected to the exhaust port (1132) through the cavity, and the air inlet (1131), the cavity and the exhaust port (1132) together form the exhaust channel.

10. The battery device according to claim 9, characterized in that The battery box (100) further includes an explosion-proof valve (114), wherein the explosion-proof valve (114) is arranged on the exhaust port (1132), and the explosion-proof valve (114) is in communication with the exhaust port (1132).

11. The battery device according to claim 9, characterized in that The exhaust port (1132) is located on a side of the second accommodating cavity (112) away from the first accommodating cavity (111).

12. The battery device according to claim 9, wherein: The side wall (113) is provided with at least two air inlets (1131) at intervals.

13. The battery device according to claim 8, characterized in that Two exhaust channels are provided, and the two exhaust channels are respectively located on two opposite sides of the second accommodating cavity (112).

14. The battery device according to any one of claims 1 to 13, characterized in that: It also includes a heat insulating member (700), the heat insulating member (700) being arranged on a surface of the partition beam (200) facing the first accommodating cavity (111) and / or the second accommodating cavity (112).

15. The battery device according to claim 14, characterized in that A folding portion (710) is provided at the end of the heat insulating member (700) along its own extension direction, and the folding portion (710) is connected to an adjacent side wall (113) on the battery box (100).

16. The battery device according to claim 14, wherein: The heat insulating member (700) is also arranged on the side wall (113) of the battery box (100).

17. The battery device according to claim 14, wherein: The thermal insulation component (700) is a ceramic thermal insulation belt.

18. The battery device according to any one of claims 1 to 13, characterized in that: The first battery module (400) and / or the second battery module (500) comprises a plurality of battery cells, and a fireproof interlayer is provided between two adjacent battery cells.

19. The battery device according to claim 18, wherein: The fireproof interlayer is a hydrogel layer.

20. An electrical device, characterized in that: The device comprises a device body and a battery device as claimed in any one of claims 1 to 19 arranged on the device body.

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