WO2026007233A1 - 电池包及车辆 - Google Patents

电池包及车辆

Info

Publication number
WO2026007233A1
WO2026007233A1 PCT/CN2024/119132 CN2024119132W WO2026007233A1 WO 2026007233 A1 WO2026007233 A1 WO 2026007233A1 CN 2024119132 W CN2024119132 W CN 2024119132W WO 2026007233 A1 WO2026007233 A1 WO 2026007233A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
battery pack
frame
battery
assembly
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/CN2024/119132
Other languages
English (en)
French (fr)
Inventor
刘家为
邹城
殷杰
张薇
苟斌
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Dongfeng Motor Group Co Ltd
Original Assignee
Dongfeng Motor Group Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Dongfeng Motor Group Co Ltd filed Critical Dongfeng Motor Group Co Ltd
Publication of WO2026007233A1 publication Critical patent/WO2026007233A1/zh
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/30—Arrangements for facilitating escape of gases
    • H01M50/375—Vent means sensitive to or responsive to temperature
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/233—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions
    • H01M50/24—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by physical properties of casings or racks, e.g. dimensions adapted for protecting batteries from their environment, e.g. from corrosion
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/249—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders specially adapted for aircraft or vehicles, e.g. cars or trains
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H01M50/289—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders characterised by spacing elements or positioning means within frames, racks or packs
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M2220/00—Batteries for particular applications
    • H01M2220/20—Batteries in motive systems, e.g. vehicle, ship, plane
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

Definitions

  • This application belongs to the field of battery pack technology, and particularly relates to a battery pack and a vehicle.
  • This application aims to address at least one of the technical problems existing in the prior art. To this end, this application proposes a battery pack and vehicle that enables directional exhaust in the event of thermal runaway of the battery pack, promptly expelling the fumes outside the battery pack, avoiding contact with the circuit board, and reducing the risk of thermal runaway.
  • a battery pack comprising:
  • the enclosure assembly includes a frame and a first crossbeam disposed within the frame.
  • the inner cavity of the frame is divided into a control compartment and a main mounting area by the first crossbeam.
  • At least one explosion-proof valve is provided on the frame to connect the main mounting area to the outside.
  • the top cover is a sealed connection to the housing assembly and covers the upper opening of the inner cavity of the frame;
  • the first and second plates are spaced apart and positioned below the upper cover
  • the battery cell assembly is located in the main mounting area;
  • a control component is located in the control compartment and is electrically connected to the battery cell assembly via a conductive element;
  • the first plate is sealed to the housing assembly and covers the upper opening of the main mounting area, and the second plate is sealed to the housing assembly and covers the lower opening of the inner cavity of the frame, so that the main mounting area and the control compartment form independent spaces;
  • the first plate is provided with a wire passage for the conductive component to pass through, and a wire passage seal is provided in the gap between the conductive component and the wire passage.
  • the housing assembly further includes at least one second crossbeam and at least one longitudinal beam disposed within the frame, wherein the second crossbeam and the longitudinal beam are both located in the main mounting area and divide the main mounting area into several battery compartments;
  • Both the first plate and the second plate are sealed to the second crossbeam and the longitudinal beam, so that each of the battery compartments forms a closed and independent space.
  • the battery cell assembly includes a plurality of battery cell modules electrically connected by connecting copper busbars, and the plurality of battery cell modules are disposed one-to-one in the plurality of battery compartments.
  • the upper cover and the first plate are spaced apart to form a wiring space that communicates with the control cabin; the connecting copper busbar and the conductive component both extend into the wiring space through the wiring channel and are sealed by the wiring seal.
  • control component includes an electrically connected control device and a power distribution device
  • conductive element includes an output copper busbar for connecting the battery cell assembly and the power distribution device, and a low-voltage sampling harness for connecting the battery cell assembly and the control device.
  • the via includes a first via, several second vias, and several third vias spaced apart; the output copper busbar extends into the first via, the connecting copper busbar extends into the second via, and the low-voltage sampling harness extends into the third via.
  • the first via and several second vias are distributed on the edge of the first plate; the third via is distributed on the edge and/or center of the first plate.
  • the first plate is provided with reinforcing ribs, and the wire passage is located in the reinforcing ribs.
  • sealing gaskets are provided on the first crossbeam, the second crossbeam, the longitudinal beam, and the side crossbeam of the frame, and the first plate, the housing assembly, and the second plate together compress the sealing gaskets.
  • both the top cover and the second plate are connected to the housing assembly FDS, and the connection is coated with sealant; the top cover applies a force to the first plate to compress the sealing gasket.
  • the first plate is connected to the housing assembly FDS or by screws, and the connection is coated with sealant; or, the top cover is welded to the first plate as a whole.
  • the inner wall of the housing assembly is provided with at least one-way valve corresponding to the position of the main installation area
  • the explosion-proof valve is provided on the outer wall of the frame
  • the frame and the first crossbeam both have connected exhaust channels
  • the one-way valve and the explosion-proof valve are both connected to the exhaust channels.
  • the second crossbeam and/or the longitudinal beam also have the exhaust channel, and the exhaust channel of the second crossbeam and/or the longitudinal beam is connected to the exhaust channel of the frame.
  • both the one-way valve and the explosion-proof valve are located on the frame and correspond one-to-one with several of the battery compartments; the one-way valve and the explosion-proof valve are staggered.
  • the battery pack further includes a cooling assembly, which includes an upper liquid cooling plate and a lower liquid cooling plate, the upper liquid cooling plate and the lower liquid cooling plate respectively constituting the first plate and the second plate; the cell assembly is disposed on the lower liquid cooling plate.
  • a cooling assembly which includes an upper liquid cooling plate and a lower liquid cooling plate, the upper liquid cooling plate and the lower liquid cooling plate respectively constituting the first plate and the second plate; the cell assembly is disposed on the lower liquid cooling plate.
  • both the upper liquid cooling plate and the lower liquid cooling plate include a flat plate and a flow channel plate, with the flow channel plate facing the battery cell assembly; both the flat plate and the flow channel plate are provided with reinforcing ribs, and the edges of the flat plate and the flow channel plate, as well as the locations of the reinforcing ribs, are welded; the wire passage is located in the reinforcing rib.
  • the battery cells in the battery cell assembly are pouch cells or cylindrical cells.
  • a vehicle in a second aspect of this application, includes the battery pack described in the first aspect.
  • a battery pack is provided, forming an independent control compartment and a main mounting area by setting a housing assembly, a first plate, and a second plate.
  • the control compartment is used to install control components
  • the main mounting area is used to install battery cell components.
  • An explosion-proof valve is provided on the frame to connect the main mounting area to the outside. When thermal runaway occurs in the battery cell components, high-temperature fumes can be discharged from the battery pack through the explosion-proof valve. Since the main mounting area is jointly enclosed by the frame, the first crossbeam, the first plate, and the second plate, high-temperature fumes cannot pass through the main mounting area and will not enter the control compartment.
  • the main mounting area is a closed space, to facilitate the electrical connection between the control components and the battery cell components, the first plate is provided with a wiring channel for conductive components to pass through, and a wiring seal is provided in the gap between the conductive components and the wiring channel. This ensures the sealing of the main mounting area and allows wiring to be routed using the gap between the top cover and the first plate, preventing high-temperature fumes from adversely affecting the conductive components.
  • the housing assembly, the first plate and the second plate isolate an independent sealed space for installing the cell assembly.
  • the first plate separates the control assembly and the conductive parts used to connect the control assembly and the cell assembly from the cell assembly, thus preventing problems such as the sticking of electronic components inside the control assembly and short circuit of wiring harness caused by the high-temperature fumes generated during thermal runaway of the cell, achieving thermal and electrical separation and improving the safety of the battery pack.
  • Figure 1 shows an exploded view of the battery pack in one or more embodiments of this application.
  • the control components are hidden to facilitate the display of the control compartment.
  • Figure 2 shows a schematic diagram of the battery pack structure after the top cover is removed in one or more embodiments of this application.
  • Figure 3 shows a schematic diagram of the structure of the first plate in the battery pack of Figure 2.
  • Figure 4 shows the assembly structure diagram of the copper busbar connecting the battery pack in Figure 2 to the first plate.
  • Figure 5 shows the assembly structure of the housing assembly and the second plate in the battery pack of Figure 2.
  • Figure 6 shows a schematic diagram of the cell module of the battery pack in one or more embodiments of this application.
  • Figure 7 shows a schematic diagram of the exhaust path of the battery pack in one or more embodiments of this application.
  • Figure 8 shows a cross-sectional view along line A-A of Figure 7.
  • Figure 9 shows an assembly structure diagram of the battery pack frame and the first crossbeam in one or more embodiments of this application.
  • Figure 10 shows a structural schematic diagram of the front side of the upper liquid cooling plate of the battery pack in one or more embodiments of this application.
  • Figure 11 shows a schematic diagram of the structure of the back side (the side where the flow channel is located) of the upper liquid cooling plate of the battery pack in one or more embodiments of this application.
  • the most common pressure relief method in battery packs is to install explosion-proof valves on the side beams of the battery pack. These valves connect the internal space of the battery pack to the external environment.
  • the explosion-proof valve When thermal runaway occurs, the internal pressure of the battery pack increases, and once the explosion-proof valve reaches its threshold, it opens, releasing the high-temperature substances inside the battery pack.
  • the battery pack cavities are interconnected. After thermal runaway occurs, before the explosion-proof valve opens, the thermal runaway can easily spread from a localized area to the entire battery pack, causing the entire battery pack to catch fire and explode, resulting in severe damage. The spread of smoke generated by the battery cells can also cause secondary short circuits in the BDU and other battery modules, leading to even more severe thermal runaway.
  • high-temperature smoke can cause relays inside the BDU to stick and become unable to apply high voltage; conductive substances in the high-temperature smoke can adhere to the low-voltage connection points of the BMS, causing inaccurate detection signals; and high-temperature smoke can cause short circuits in the low-voltage connection points of the BMS, resulting in damage to the internal circuit boards of the BMS due to excessive voltage.
  • one or more embodiments of this application provide a battery pack and vehicle that can at least partially solve the technical problems existing in related technologies, and have no requirements on the type and structure of battery cells, applicable to all types of battery cells.
  • the technical solution of this application will be described in detail below with reference to the accompanying drawings and embodiments.
  • a first aspect embodiment of this application provides a battery pack 1000, including a housing assembly 100, a first plate 10, a second plate 20, a cell assembly 200, a top cover 300, and a control assembly 500.
  • the housing assembly 100 includes a frame 110 and a first crossbeam 120 connected to the frame 110.
  • the frame 110 has mounting holes for connecting to a vehicle to mount the battery pack 1000 on the vehicle.
  • the first crossbeam 120 is located within the frame 110, dividing the inner cavity of the frame 110 into a control compartment 101 and a main mounting area 102, as shown in Figure 5.
  • the cell assembly 200 is located in the main mounting area 102 of the housing assembly 100, and the control assembly 500 is located in the control compartment 101 of the housing assembly 100.
  • the control assembly 500 and the cell assembly 200 are electrically connected via a conductive element 230, which transmits high-voltage current and/or low-voltage detection signals.
  • the top cover 300 is sealed to the housing assembly 100, and the top cover 300 covers the upper opening of the inner cavity of the frame 110.
  • the first plate 10 and the second plate 20 are spaced apart below the top cover 300, wherein: the second plate 20 is sealed to the housing assembly 100 and covers the lower opening of the inner cavity of the frame 110, and the top cover 300, the housing assembly 100 and the second plate 20 form a sealed battery pack 1000, which meets the IP67 sealing requirement of the battery pack 1000; the first plate 10 is sealed to the housing assembly 100 and covers the upper opening of the main mounting area 102, so that the main mounting area 102 is jointly closed by the first plate 10, the housing assembly 100 and the second plate 20, and the main mounting area 102 and the control compartment 101 form independent spaces.
  • At least one explosion-proof valve 30 is provided on the frame 110.
  • the explosion-proof valve 30 When the explosion-proof valve 30 is open, the main mounting area 102 is connected to the outside.
  • the high-temperature flue gas can be discharged from the battery pack 1000 through the explosion-proof valve 30.
  • the main mounting area 102 Since the main mounting area 102 is jointly sealed by the frame 110, the first crossbeam 120, the first plate 10, and the second plate 20, the high-temperature flue gas cannot pass through the main mounting area 102 and will not enter the control compartment 101. This avoids situations such as short circuits or internal electronic components sticking together and being unable to switch on or off high voltage after the control component 500 comes into contact with the high-temperature flue gas, thus reducing the risk of thermal runaway.
  • the first plate 10 is provided with a wire passage 11 for the conductive component 230 to pass through, and a wire sealing component 12 is provided in the gap between the conductive component 230 and the wire passage 11. This ensures the sealing of the main mounting area 102 and allows the wires to be routed through the gap between the top cover 300 and the first plate 10, preventing high-temperature flue gas from having an adverse effect on the conductive component 230.
  • the battery pack 1000 has a housing assembly 100, a first plate 10 and a second plate 20 that isolate an independent sealed space for installing the cell assembly 200.
  • the first plate 10 separates the control assembly 500 and the conductive component 230 for connecting the control assembly 500 and the cell assembly 200 from the cell assembly 200. This prevents the high-temperature fumes generated during thermal runaway of the cell from causing problems such as the sticking of electronic components inside the control assembly 500 and short circuits in the wiring harness, thus achieving thermal and electrical separation and improving the safety of the battery pack 1000.
  • the battery pack 1000's cell assembly 200 typically contains a large number of cells, which are divided into multiple cell units. Taking pouch cells as an example, typically several pouch cells are first assembled into a battery module, and then several battery modules are connected in series and parallel to form the cell assembly 200. For prismatic cells, a certain number of prismatic cells are divided into a module, and multiple modules are connected in series and parallel to form the cell assembly 200.
  • the cell assembly 200 includes several cell modules 210 electrically connected by connecting copper busbars 220.
  • the cell module 210 can be a battery module formed by several pouch cells or a module formed by several prismatic cells. It is certain that the cell module 210 is a combination of two or more cells.
  • the housing assembly 100 further includes at least one second crossbeam 130 and at least one longitudinal beam 140 disposed within the frame 110. Both the second crossbeam 130 and the longitudinal beam 140 are located in the main mounting area 102 and divide the main mounting area 102 into several battery compartments 103. The first plate 10 and the second plate 20 are both sealed to the second crossbeam 130 and the longitudinal beam 140, so that each battery compartment 103 forms a closed and independent space, with each battery cell module 210 correspondingly disposed in one of the several battery compartments 103.
  • the thermal spread of the battery pack 1000 can be effectively blocked when thermal runaway occurs in a battery cell module 210 of a certain battery compartment 103, preventing high-temperature fumes from entering other battery compartments 103.
  • the number of second crossbeams 130 and longitudinal beams 140 is determined by the number of cell modules 210. As shown in Figure 1, a battery pack 1000 with four cell modules 210 is illustrated, in which case there is only one second crossbeam 130 and one longitudinal beam 140. If the cell assembly 200 includes six cell modules 210 arranged in a 2*3 matrix, then two second crossbeams 130 and one longitudinal beam 140 are required.
  • the gap between the top cover 300 and the first plate 10 is used for wiring.
  • the top cover 300 and the first plate 10 can be spaced apart to form a wiring space, or the wiring can be carried out using the space formed by the reinforcing ribs 413 of the top cover 300 itself.
  • the specific structure is not limited in this application.
  • the top cover 300 and the first plate 10 are spaced apart to enclose a wiring space for wiring. Since the first plate 10 only covers the upper opening of the main mounting area 102, the wiring space above the first plate 10 is connected to the control compartment 101. High-voltage copper busbars, low-voltage wire harnesses and other conductive components 230 can pass through the first plate 10, extend in the wiring space and be electrically connected to the control components 500 in the control compartment 101.
  • the wiring space is connected to the control compartment 101, so that both the high-voltage copper busbar and the low-voltage wiring harness can be connected to the control component 500 normally. Since the wiring space and the control compartment 101 are isolated from the main installation area 102, the high-temperature flue gas in the main installation area 102 will not spread to the wiring space and the control compartment 101, thus avoiding faults such as the internal electronic components of the control component 500 sticking together and being unable to switch on or off high voltage.
  • the connecting copper busbar 220 used to realize the electrical connection between the cell modules 210 also extends into the wiring space through the wiring channel 11 and is sealed by the wiring seal 12, which can be sealant or sealing ring. That is, the two connecting ends of the connecting copper busbar 220 extend into different battery compartments 103 through the wiring channel 11 and are electrically connected to the two cell modules 210 respectively, while the main body of the connecting copper busbar 220 is located in the wiring space and crosses the second crossbeam 130 or longitudinal beam 140.
  • the control component 500 includes an electrically connected control device 510 and a power distribution device 520.
  • the control device 510 may be a BMS (Battery Management System), and the power distribution device 520 may be a BDU (Battery Energy Distribution Unit, also known as a high-voltage distribution box).
  • the control device 510 and the power distribution device 520 are arranged side by side along the transverse direction (axial direction of the beam).
  • the control device 510 adopts a master-slave topology, including one master control unit and two or more slave control units.
  • the conductive component 230 includes an output copper busbar 231 for connecting the cell assembly 200 and the power distribution device 520, and a low-voltage sampling harness 232 for connecting the cell assembly 200 and the control device 510. That is, the low-voltage sampling harness 232 is electrically connected to each cell module 210 and is used to collect at least one of the voltage, current, and temperature of the cell module 210; the output copper busbar 231 is used to realize the high-voltage electrical connection between the entire cell assembly 200 and the power distribution device 520.
  • the battery pack 1000 is also equipped with a thermal runaway sensor, which is also electrically connected to the control device 510.
  • the thermal runaway sensor is typically installed in the battery compartment 103 and can acquire information such as particulate matter concentration, temperature, and air pressure within the battery compartment 103 to determine whether thermal runaway has occurred in the battery compartment 103.
  • the thermal runaway sensor can also detect other characteristic parameters or be installed in other locations within the battery pack 1000. Thermal runaway sensors are mature existing technology, and specific details can be found in relevant prior art disclosures; this application does not impose any limitations.
  • the control device 510 determines whether thermal runaway has occurred within the battery pack 1000 based on the feedback signal from the thermal runaway sensor. When the thermal runaway sensor is typically installed in the battery compartment 103, the wiring harness connecting the thermal runaway sensor and the control device 510 also needs to extend into the wiring space through the wiring channel 11 and be sealed by the wiring seal 12.
  • the cable channel 11 includes a first via 11a, a plurality of second vias 11b, and a plurality of third vias 11c spaced apart.
  • An output copper busbar 231 extends into the first via 11a
  • a connecting copper busbar 220 extends into the second via 11b
  • a low-voltage sampling harness 232 extends into the third via 11c.
  • the positions of the first via 11a, second vias 11b, and third vias 11c are determined based on the positions of the high-voltage connection position 211 and the low-voltage sampling port 212 in the battery cell module 210, and are not limited thereto in this application.
  • FIG. 6 shows a schematic diagram of the battery cell module 210 in some embodiments.
  • the high-voltage connection position 211 and the low-voltage sampling port 212 of the battery cell module 210 are distributed on different sides.
  • the high-voltage connection position 211 is close to the frame 110
  • the low-voltage sampling port 212 is close to the second crossbeam 130 or the longitudinal beam 140.
  • the first through hole 11a and several second through holes 11b are distributed on the edge of the first plate 10; the third through hole 11c is distributed in the middle of the first plate 10, thereby realizing the separation of high and low voltage.
  • the high-voltage connection position 211 and the low-voltage sampling port 212 are distributed on the same side of the battery cell module 210, and when the battery cell module 210 is installed, the high-voltage connection position 211 is close to the frame 110, then the first through hole 11a, the second through hole 11b and the third through hole 11c are all distributed on the edge of the first plate 10.
  • the extension of the wire harness is located as far above the frame 110, the second crossbeam 130, and the longitudinal beam 140 as possible.
  • the height of the second crossbeam 130 and the longitudinal beam 140 can be set lower than the frame 110, so that the corresponding position of the first plate 10 can form a recessed area to accommodate the wire harness.
  • the first plate 10 is provided with a reinforcing rib 413 to improve the rigidity of the first plate 10.
  • the wire passage 11 is provided in the reinforcing rib 413. Since the structural strength and rigidity at the location of the reinforcing rib 413 are both good, opening the wire passage 11 in the reinforcing rib 413 will not reduce the strength of the first plate 10 too much.
  • first crossbeam 120, the second crossbeam 130, the longitudinal beam 140, and the side crossbeams of the frame 110 are all provided with sealing gaskets 50.
  • the first plate 10, the housing assembly 100, and the second plate 20 jointly compress the sealing gaskets 50 to achieve mutual sealing between the various battery compartments 103.
  • both the top cover 300 and the second plate 20 are connected to the housing assembly 100 using FDS (flow drill screws), and the connection is coated with sealant to meet the IP67 sealing requirements of the battery pack 1000.
  • FDS flow drill screws
  • the top cover 300 and the second plate 20 are both connected to the housing assembly 100 using FDS, so that the top cover 300 and the second plate 20 are stably connected to the housing assembly 100 to withstand Z-direction loads, and the top cover 300 can apply a force to the first plate 10 to compress the sealing gasket 50.
  • the sealing connection between the first plate 10 and the housing assembly 100 only needs to ensure that the thermal runaway airflow does not diffuse outward.
  • the sealing requirement is lower than the IP67 sealing requirement. Therefore, the first plate 10 and the housing assembly 100 can be connected by FDS or by screws, and the connection is coated with sealant to achieve a seal.
  • the top cover 300 and the first plate 10 can be two separate parts or integrated into one unit.
  • both the top cover 300 and the first plate 10 are made of metal and are welded together.
  • Connecting copper busbars 220, output copper busbars 231, low-voltage sampling harnesses 232, etc., are pre-installed between the top cover 300 and the first plate 10, with their interfaces extending through the wiring channel 11 of the first plate 10 to electrically connect with the control component 500 and the battery cell assembly 200.
  • a sealed connection between the first plate 10 and the housing assembly 100 is simultaneously achieved.
  • the explosion-proof valve 30 is located on the outer wall of the frame 110, and at least one-way valve 40 is provided on the inner wall of the housing assembly 100 corresponding to the position of the main mounting area 102.
  • the frame 110 and the first crossbeam 120 both have interconnected exhaust channels 104.
  • the one-way valve 40 and the explosion-proof valve 30 are both connected to the exhaust channels 104.
  • the battery pack 1000 provided in one or more embodiments of this application has no requirements on the type and structure of the cells. It is applicable to prismatic cells with explosion-proof valves 30, as well as pouch cells and cylindrical cells without explosion-proof valves 30. Therefore, in some embodiments, the cells of the cell assembly 200 are pouch cells or cylindrical cells.
  • the high-temperature flue gas can enter the exhaust channel 104 of the frame 110 and the first crossbeam 120 through the one-way valve 40.
  • the flue gas in the exhaust channel 104 cannot be discharged back into the control compartment 101 and the main mounting area 102.
  • the flue gas in the exhaust channel 104 is discharged outside the battery pack 1000 through the explosion-proof valve 30.
  • the exhaust channel 104 can store a certain volume of high-temperature flue gas, which acts as a buffer and reduces the impact force of the airflow discharged from the explosion-proof valve 30.
  • the temperature of the high-temperature flue gas gradually decreases as it flows through the exhaust channel 104, reducing the high-temperature hazard of the airflow discharged from the explosion-proof valve 30.
  • the high-temperature flue gas flows through the exhaust channel 104, some particles will settle downwards, thereby reducing the content of conductive particles in the airflow emitted by the explosion-proof valve 30 and reducing the impact of the airflow emitted by the explosion-proof valve 30 on other electrical components of the vehicle.
  • the second crossbeam 130 and/or the longitudinal beam 140 can also be configured as hollow structures. That is, the second crossbeam 130 and/or the longitudinal beam 140 also have exhaust channels 104, and the exhaust channels 104 of the second crossbeam 130 and/or the longitudinal beam 140 are connected to the exhaust channels 104 of the frame 110.
  • the frame 110, the first crossbeam 120, the second crossbeam 130, and the longitudinal beam 140 are all extruded aluminum profiles with internal cavities, which can form the exhaust channels 104.
  • two partitions 160 are respectively provided inside the two side longitudinal beams 111 of the frame 110, and the two partitions 160 correspond to the positions of the first crossbeam 120.
  • the two partitions 160 block the cavities of the two side longitudinal beams 111, so that the cavity of the part corresponding to the control compartment 101 in the side longitudinal beams 111 is not connected to the cavity of the part corresponding to the main installation area 102, and the high-temperature flue gas will not enter the corresponding position of the control compartment 101, thereby reducing the heating rate inside the control compartment 101.
  • the explosion-proof valve 30 is provided on the frame 110 of the part corresponding to the main installation area 102, as shown in Figure 5, and the explosion-proof valve 30 is not provided on the frame 110 of the part corresponding to the control compartment 101.
  • the partition 160 can be two flat plates extending outward from both ends of the first crossbeam 120, with the two flat plates extending into the cavity of the side longitudinal beam 111, thereby dividing the cavity of the side longitudinal beam 111 into two parts.
  • the partition 160 can also be an independently set plate, which is connected and fixed to the first crossbeam 120 by means of adhesive, welding, fasteners, etc., to close the corresponding part of the control compartment 101.
  • each battery compartment 103 is equipped with one or more one-way valves 40.
  • the one-way valves 40 can be installed on the frame 110, the first crossbeam 120, the second crossbeam 130, or the longitudinal beam 140, and their specific installation positions are not limited in this application.
  • Each battery compartment 103 can be equipped with one or more explosion-proof valves 30, which are located on the outer wall of the frame 110.
  • both the one-way valve 40 and the explosion-proof valve 30 are located on the frame 110 and correspond one-to-one with several battery compartments 103.
  • the one-way valve 40 and the explosion-proof valve 30 corresponding to the same battery compartment 103 are staggered. On the one hand, this avoids the high-temperature fumes in the battery compartment 103 from being directly ejected from the explosion-proof valve 30 without buffering, which would have an adverse effect on the external structure of the vehicle.
  • the locations of the one-way valve 40 and the explosion-proof valve 30 are weak points of the frame 110. By staggering the distribution of these weak points, the frame 110 is prevented from being weak both inside and out, thus ensuring the structural strength of the frame 110.
  • the first plate 10 and the second plate 20 can be separate plates within the battery pack 1000, or components of the battery pack 1000 itself can be used as the first plate 10 and the second plate 20.
  • the battery pack 1000 further includes a cooling assembly comprising an upper liquid cooling plate 410 and a lower liquid cooling plate 420.
  • the upper liquid cooling plate 410 and the lower liquid cooling plate 420 respectively constitute the first plate 10 and the second plate 20, and the battery cell assembly 200 is disposed on the lower liquid cooling plate 420.
  • This double-layer liquid cooling can effectively improve the cooling rate and reduce the risk of thermal runaway.
  • the upper liquid cooling plate 410 and the lower liquid cooling plate 420 can be connected by a flexible hose, so the battery pack 1000 only needs to be equipped with one inlet and one outlet.
  • the upper liquid cooling plate 410 and the lower liquid cooling plate 420 are two independent cooling systems that are not connected, and two inlets and two outlets are correspondingly provided on the frame 110.
  • an adapter can also be provided on the frame 110, and the inner cavity of the adapter realizes the function of one inlet and two outlets.
  • the battery pack 1000 further includes a bottom protective plate 600, which is located at the bottom of the battery pack 1000.
  • the bottom protective plate 600 is connected to the housing assembly 100 and protects the lower liquid cooling plate 420.
  • the bottom protective plate 600 is sealed to the housing assembly 100 and to the lower liquid cooling plate 420.
  • thermal insulation foam is provided between the upper cover 300 and the upper liquid-cooled plate 410 and between the bottom protective plate 600 and the lower liquid-cooled plate 420.
  • thermal insulation foam plays a role in thermal insulation, and on the other hand, it can support the upper cover 300, the upper liquid-cooled plate 410, the bottom protective plate 600 and the lower liquid-cooled plate 420, thereby improving the modality.
  • Both the upper liquid cooling plate 410 and the lower liquid cooling plate 420 include a planar plate 411 and a flow channel plate 412.
  • the flow channel plate 412 has a flow channel 414 structure stamped on it, and during assembly, the flow channel plate 412 faces the cell assembly 200.
  • Both the planar plate 411 and the flow channel plate 412 are provided with reinforcing ribs 413, which are staggered with the flow channel 414.
  • the planar plate 411 and the flow channel plate 412 are welded and fixed, and the weld lines are located at the edges of the planar plate 411 and the flow channel plate 412, as well as at the location of the reinforcing ribs 413.
  • the wire passage 11 is provided in the reinforcing rib 413 of the upper liquid cooling plate 410 and does not occupy the space of the flow channel 414, as shown in Figure 11.
  • the upper liquid cooling plate 410, the lower liquid cooling plate 420, the frame 110, the first crossbeam 120, the second crossbeam 130, and the longitudinal beam 140 isolate the interior of the battery pack 1000 into an independent sealed space—the battery compartment 103.
  • a cell module 210 formed by several soft-pack cells is placed on the lower liquid cooling plate 420 and located in the aforementioned battery compartment 103.
  • the upper and lower double-layer liquid cooling can effectively improve the cooling rate and reduce the risk of thermal runaway.
  • the pressure in the battery compartment 103 containing the corresponding cell module 210 increases.
  • the high-temperature substances generated by the thermal runaway enter the exhaust channels 104 of the horizontal and vertical beams and frame 110 through the one-way valve 30, completely filling the exhaust channels 104.
  • the sealing of the upper liquid cooling plate 410 confines the fumes generated by the thermal runaway to a single battery compartment 103.
  • Other battery compartments 103 are restricted by the one-way valve 40, preventing the gas inside the exhaust channels 104 from flowing back in, thus preventing secondary damage to other cell modules 210 within the battery pack 1000 and reducing losses caused by thermal runaway.
  • the upper liquid cooling plate 410 separates the BDU and BMS from the battery cells.
  • the connection of the high-voltage copper busbar and the arrangement of the low-voltage sampling line of the battery pack 1000 are both located on the upper part of the upper liquid cooling plate 410.
  • the connection of the copper busbar 220 of the adjacent battery compartment 103 and the low-voltage sampling line harness 232 are realized through the wire passage 11.
  • the wire passage 11 is sealed by the wire passage seal 12, thereby ensuring that the smoke from the thermal runaway of the battery cells will not spread to the BDU and BMS, and avoiding problems such as the internal relay of the BDU sticking and being unable to switch on and off high voltage.
  • the battery pack 1000 provided according to one or more embodiments of this application has the following advantages:
  • the housing assembly 100, the first plate 10 and the second plate 20 isolate an independent sealed space for installing the cell assembly 200.
  • the first plate 10 separates the control assembly 500 and the wiring harness from the cell, thus preventing problems such as the sticking of internal electronic components of the control assembly 500 and short circuit of the wiring harness caused by the thermal runaway smoke of the cell, achieving thermal and electrical separation and improving the safety of the battery pack 1000.
  • the upper and lower liquid cooling plates can cool the battery cell on both sides, which improves the cooling rate and reduces the risk of thermal runaway.
  • the internal space of the side beams and internal horizontal and vertical beams 140 is used as an exhaust channel 104, which, together with the one-way valve 40 and the explosion-proof valve 30, enables directional spraying, blocking the heat spread of the battery pack 1000 and improving the safety of the battery pack 1000. Furthermore, it has no requirements on the type and structure of the battery cells and is suitable for all types of battery cells.
  • All explosion-proof valves 30 are connected to the exhaust channel 104. In the event of thermal runaway, all explosion-proof valves 30 can be opened simultaneously to quickly reduce the internal pressure of the battery pack 1000 and reduce the risk of battery pack 1000 explosion.
  • a second aspect of this application provides a vehicle including a battery pack 1000 according to any of the embodiments of the first aspect described above.
  • the vehicle includes a vehicle body and a battery pack 1000.
  • the battery pack 1000 is mounted on the vehicle body and can be integrated into the chassis of the vehicle body or mounted under the floor of the vehicle body.
  • the two side longitudinal beams 111 of the battery pack 1000's frame 110 are respectively connected to the vehicle's sill beams via mounting bolts, and the mounting portion 112 of the side longitudinal beam 111 extends below the sill beam and connects to it.
  • the second crossbeam 130 of the battery pack 1000 is also provided with mounting bolts, and the second crossbeam 130 is connected to the vehicle's floor assembly via mounting bolts. To prevent the mounting structure of the mounting portion 112 from being impacted in the event of thermal runaway of the battery pack 1000, the position of the explosion-proof valve 30 should be offset from the mounting holes of the mounting portion 112.
  • the battery pack 1000 also includes several mounting brackets 150.
  • the mounting brackets 150 are distributed at the front and rear ends (X-direction) of the frame 110, and are connected to the vehicle's floor assembly via mounting bolts.
  • the connection between the battery pack 1000 and the vehicle body is primarily achieved through the side mounting portions 112, which bear the pressure.
  • the front and rear mounting brackets 150 play an auxiliary role in distributing the pressure.
  • the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, “above,” “over,” and “on top” of the second feature includes the first feature being directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. “Below,” “below,” and “under” the second feature includes the first feature being directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.
  • connection can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components.
  • connection can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components.
  • first and second in this application is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with “first” or “second” may explicitly or implicitly include one or more features. In the description of this application, “multiple” means two or more, unless otherwise explicitly specified.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Aviation & Aerospace Engineering (AREA)
  • Battery Mounting, Suspending (AREA)

Abstract

一种电池包(1000)及车辆。电池包(1000)包括箱体总成(100)、上盖(300)、电芯组件(200)、控制组件(500)、第一板件(10)和第二板件(20)；箱体总成(100)包括边框(110)和第一横梁(120)，边框(110)的内腔通过第一横梁(120)分隔为控制舱(101)和主安装区(102)；边框(110)上设有防爆阀(30)；第一板件(10)密封覆盖于主安装区(102)的上方开口，第二板件(20)密封覆盖于边框(110)的内腔的下方开口，上盖(300)密封覆盖于边框(110)的内腔的上方开口，第一板件(10)上设有过线通道(11)和过线密封件(12)。通过箱体总成(100)、第一板件(10)和第二板件(20)隔离出独立的密闭空间用于安装电芯组件(200)，第一板件(10)将控制组件(500)以及用于连接控制组件(500)与电芯组件(200)的导电件(230)均与电芯组件(200)分隔开来，杜绝了电芯热失控时产生的高温烟气导致控制组件(500)内部电子元件粘连和线束短路等问题，实现热电分离，提高电池包(1000)安全性。

Description

电池包及车辆 相关申请的交叉引用
本申请要求于2024年07月05日提交的申请号为202410897939.6的中国专利申请的优先权，其全部内容通过引用并入本文。
技术领域
本申请属于电池包技术领域，尤其涉及一种电池包及车辆。
 背景技术
随着新能源汽车迅猛发展，电池包的安全性也愈发重要。电池包中一个电池单元发生热失控会迅速蔓延到相邻电池单元。当电芯内部的压力升高到一定程度，或者电芯内部结构破裂时，电芯可能会爆炸或者释放有毒的气体。电芯释放的浓烟中含有导电颗粒，这些导电性的颗粒扩散到整个电池包中会引发二次短路，带来更加剧烈的热失控。
 发明内容
本申请旨在至少解决现有技术中存在的技术问题之一。为此，本申请提出一种电池包及车辆，实现电池包热失控时定向排气，及时将烟气排出电池包外，避免与电路板接触，降低热失控风险。
在本申请的第一方面，提供一种电池包，包括：
箱体总成，包括边框和设于所述边框内的第一横梁，所述边框的内腔通过所述第一横梁分隔为控制舱和主安装区；所述边框上设有至少一个用于连通所述主安装区与外界的防爆阀； 
上盖，密封连接于所述箱体总成且覆盖于所述边框的内腔的上方开口；
第一板件和第二板件，间隔设于所述上盖的下方； 
电芯组件，设于所述主安装区；
控制组件，设于所述控制舱、且通过导电件与所述电芯组件电连接；
其中，所述第一板件密封连接于所述箱体总成且覆盖于所述主安装区的上方开口，所述第二板件密封连接于所述箱体总成且覆盖于所述边框的内腔的下方开口，以使所述主安装区与所述控制舱形成相互独立的空间；所述第一板件上设有用于供所述导电件穿过的过线通道，所述导电件与所述过线通道的间隙中设有过线密封件。
在一些优化的技术方案中，所述箱体总成还包括设于所述边框内的至少一个第二横梁和至少一个纵梁，所述第二横梁和所述纵梁均位于所述主安装区中、并将所述主安装区分隔为若干电池舱；
所述第一板件和所述第二板件均与所述第二横梁和所述纵梁密封连接，以使各个所述电池舱形成封闭且相互独立的空间；
所述电芯组件包括通过连接铜排电连接的若干电芯模块，若干所述电芯模块一一对应设于若干所述电池舱中。
在一些优化的技术方案中，所述上盖与所述第一板件间隔设置，以合围成与所述控制舱连通的走线空间；所述连接铜排以及所述导电件均通过所述过线通道伸入于所述走线空间、且通过所述过线密封件密封。
在一些优化的技术方案中，所述控制组件包括电连接的控制装置和配电装置，所述导电件包括用于连接所述电芯组件与所述配电装置的输出铜排，以及用于连接所述电芯组件与所述控制装置的低压采样线束。
在一些优化的技术方案中，所述过线通道包括间隔分布的第一过孔、若干第二过孔和若干第三过孔；所述输出铜排伸入所述第一过孔中，所述连接铜排伸入所述第二过孔中，所述低压采样线束伸入所述第三过孔中。
在一些优化的技术方案中，所述第一过孔和若干第二过孔均分布于所述第一板件的边缘；所述第三过孔分布于所述第一板件的边缘和/或中部。
在一些优化的技术方案中，所述第一板件设有加强筋，所述过线通道设于所述加强筋中。
在一些优化的技术方案中，所述第一横梁、所述第二横梁、所述纵梁以及所述边框的边横梁上均设有密封垫，所述第一板件、所述箱体总成和所述第二板件共同压缩所述密封垫。
在一些优化的技术方案中，所述上盖和所述第二板件均与所述箱体总成FDS连接，且连接处涂覆有密封胶；所述上盖向所述第一板件施加用于压缩所述密封垫的作用力。
在一些优化的技术方案中，所述第一板件与所述箱体总成FDS连接或者通过螺钉连接，且连接处涂覆有密封胶；或者，所述上盖与所述第一板件焊接为一体。
在一些优化的技术方案中，所述箱体总成的内壁对应于所述主安装区的位置设有至少一个单向阀，所述防爆阀设于所述边框的外壁，所述边框和所述第一横梁均具有相连通的排气通道，所述单向阀和所述防爆阀均与所述排气通道连通。
在一些优化的技术方案中，所述第二横梁和/或所述纵梁中同样具有所述排气通道，且所述第二横梁和/或所述纵梁的所述排气通道与所述边框的所述排气通道连通。
在一些优化的技术方案中，所述单向阀和所述防爆阀均设于所述边框上，且与若干所述电池舱一一对应；所述单向阀与所述防爆阀错位分布。
在一些优化的技术方案中，所述电池包还包括冷却组件，所述冷却组件包括上液冷板和下液冷板，所述上液冷板和所述下液冷板分别构成所述第一板件和所述第二板件；所述电芯组件设于所述下液冷板上。
在一些优化的技术方案中，所述上液冷板和所述下液冷板均包括平面板和流道板，所述流道板朝向所述电芯组件；所述平面板和所述流道板上均设有加强筋，所述平面板与所述流道板的边缘部位以及所述加强筋所在处焊接；所述过线通道设于所述加强筋中。
在一些优化的技术方案中，所述电芯组件的电芯为软包电芯或圆柱电芯。 
在本申请的第二方面，提供一种车辆，包括上述第一方面的电池包。
根据本申请一个或多个实施例提供的电池包，通过设置箱体总成、第一板件和第二板件，形成相互独立的控制舱与主安装区，控制舱用于安装控制组件，主安装区用于安装电芯组件。边框上设有用于连通主安装区与外界的防爆阀。当电芯组件中发生热失控，高温烟气能够通过防爆阀排出电池包外，由于主安装区被边框、第一横梁、第一板件和第二板件共同封闭，因此高温烟气无法穿过主安装区，不会进入控制舱，从而避免出现控制组件与高温烟气接触后发生短路或者内部电子元件粘连无法上下高压电等情况，降低热失控风险。由于主安装区为封闭空间，为方便控制组件与电芯组件的电连接，第一板件上设有用于供导电件穿过的过线通道，且导电件与过线通道的间隙中设有过线密封件，既保证了主安装区的密封性，又能够利用上盖与第一板件之间的间隙走线，防止高温烟气对导电件产生不利影响。
由此，根据本申请一个或多个实施例提供的电池包，箱体总成、第一板件和第二板件隔离出独立的密闭空间用于安装电芯组件，同时第一板件将控制组件以及用于连接控制组件与电芯组件的导电件均与电芯组件分隔开来，杜绝了电芯热失控时产生的高温烟气导致控制组件内部电子元件粘连和线束短路等问题，实现热电分离，提高电池包安全性。
 附图说明
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他的附图。
图1示出了本申请的一个或多个实施例中电池包的爆炸图，为方便展示控制舱，将控制组件作隐藏处理。
图2示出了本申请的一个或多个实施例中电池包在拆除上盖后的结构示意图。
图3示出了图2的电池包中第一板件的结构示意图。
图4示出了图2的电池包中连接铜排与第一板件的装配结构图。
图5示出了图2的电池包中箱体总成与第二板件的装配结构图。
图6示出了本申请的一个或多个实施例中电池包的电芯模块的结构示意图。
图7示出了本申请的一个或多个实施例中电池包的排气路径示意图。
图8示出了图7的A-A向剖视图。
图9示出了本申请的一个或多个实施例中电池包的边框与第一横梁的装配结构图。
图10示出了本申请的一个或多个实施例中电池包的上液冷板的正面侧的结构示意图。
图11示出了本申请的一个或多个实施例中电池包的上液冷板的背面侧（流道所在侧）的结构示意图。
附图标记说明：
1000-电池包；10-第一板件，11-过线通道，11a-第一过孔，11b-第二过孔，11c-第三过孔，12-过线密封件；20-第二板件；30-防爆阀；40-单向阀；50-密封垫；100-箱体总成，101-控制舱，102-主安装区，103-电池舱，104-排气通道；110-边框，111-边纵梁，112-挂载部；120-第一横梁；130-第二横梁；140-纵梁；150-挂载支架；160-隔板；200-电芯组件，210-电芯模块，211-高压连接位，212-低压采样口，220-连接铜排，230-导电件，231-输出铜排，232-低压采样线束；300-上盖。410-上液冷板，411-平面板，412-流道板，413-加强筋，414-流道；420-下液冷板；500-控制组件；510-控制装置；520-配电装置；600-底护板。
 具体实施方式
为了使本申请所属技术领域中的技术人员更清楚地理解本申请，下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请的一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。
相关技术中，电池包中最常见的泄压方式为：电池包边梁上装配防爆阀，防爆阀将电池包内部空间与外部环境连通，当发生热失控时电池包内部压力增大，达到防爆阀阈值后防爆阀被顶开，将电池包内部的高温物质释放出去。现有方案中电池包腔体整体联通，发生热失控后在防爆阀开启前，热失控很容易从局部扩散到整个电池包，导致整个电池包起火、爆炸，造成严重的损失。电芯产生的烟气蔓延，其中的导电物质会引发BDU和其他电池模组二次短路导致更加剧烈的热失控，例如：高温烟气导致BDU内部继电器粘连无法上下高压电；高温烟气中的导电物质附着于BMS的低压连接点导致检测信号不准；高温烟气导致BMS的低压连接点短路，造成BMS内部电路板因电压过大而损坏等。
现有技术中关于电池包热失控的研究主要着重于如何实现电芯热失控时高温烟气的定向喷发，从而防止热失控蔓延。部分相关技术在电池包箱体中设置排气通道，将电芯以电芯防爆阀朝向排气通道的姿态放置。热失控时电芯防爆阀喷射出的气体会通过导向烟道直接导向至箱体防爆阀处排出电池包外，以此实现电芯发生热失控时的高温烟气定向喷发进入排气通道，避免在电池包内部蔓延。该技术仅适用于本身设有防爆阀的方壳电芯，并不适用于单体电芯无防爆阀的软包电芯和圆柱电芯，且由于未实现热电分离，仍存在高温烟气与控制组件接触导致控制组件内部电子元件粘连和线束短路等问题。
为此，本申请一个或多个实施例提供一种电池包及车辆，至少能一定程度解决相关技术所存在的技术问题，并且对电芯种类和结构没有要求，适用于所有类型电芯。下面结合附图和实施例对本申请的技术方案进行详细说明。
请参阅图1，本申请第一方面实施例，提供一种电池包1000，包括箱体总成100、第一板件10、第二板件20、电芯组件200、上盖300和控制组件500。箱体总成100包括边框110和与边框110连接的第一横梁120，边框110上设置挂载孔，用于连接车辆，以将电池包1000安装在车辆上。第一横梁120设于边框110内，边框110的内腔通过第一横梁120分隔为控制舱101和主安装区102，如图5所示。电芯组件200设于箱体总成100的主安装区102中，控制组件500设于箱体总成100的控制舱101中，并且控制组件500与电芯组件200通过导电件230电连接，导电件230用于传输高压电流和/或低压检测信号。
上盖300与箱体总成100密封连接，上盖300覆盖于边框110的内腔的上方开口。第一板件10和第二板件20间隔设于上盖300的下方，其中：第二板件20密封连接于箱体总成100且覆盖于边框110的内腔的下方开口，上盖300、箱体总成100和第二板件20形成电池包1000整包密封，满足电池包1000的IP67密封需求；第一板件10密封连接于箱体总成100且覆盖于主安装区102的上方开口，以使主安装区102被第一板件10、箱体总成100和第二板件20共同封闭，主安装区102与控制舱101形成相互独立的空间。
请参阅图5，边框110上设有至少一个防爆阀30，当防爆阀30开启时，主安装区102与外界连通。当电芯组件200中发生热失控，高温烟气能够通过防爆阀30排出电池包1000外，由于主安装区102被边框110、第一横梁120、第一板件10和第二板件20共同封闭，因此高温烟气无法穿过主安装区102，不会进入控制舱101，从而避免出现控制组件500与高温烟气接触后发生短路或者内部电子元件粘连无法上下高压电等情况，降低热失控风险。
请参阅图2和图3，由于主安装区102为封闭空间，为方便控制组件500与电芯组件200的电连接，第一板件10上设有用于供导电件230穿过的过线通道11，且导电件230与过线通道11的间隙中设有过线密封件12，既保证了主安装区102的密封性，又能够利用上盖300与第一板件10之间的间隙走线，防止高温烟气对导电件230产生不利影响。
由此，根据本申请一个或多个实施例提供的电池包1000，箱体总成100、第一板件10和第二板件20隔离出独立的密闭空间用于安装电芯组件200，同时第一板件10将控制组件500以及用于连接控制组件500与电芯组件200的导电件230均与电芯组件200分隔开来，杜绝了电芯热失控时产生的高温烟气导致控制组件500内部电子元件粘连和线束短路等问题，实现热电分离，提高电池包1000安全性。
电池包1000的电芯组件200通常包含数量众多的电芯，若干电芯划分为多个电芯单元。以软包电芯为例，通常是若干软包电芯先集合成电池模组，再将若干电池模组串、并联形成电芯组件200。对于方壳电芯，将一定数量的方壳电芯划分为一个模组，多个模组串、并联形成电芯组件200。请参阅图2，在某些实施例中，电芯组件200包括通过连接铜排220电连接的若干电芯模块210，电芯模块210可以是若干软包电芯形成的电池模组，也可以是若干方壳电芯形成的模组，可以确定的是，电芯模块210是两个以上电芯的组合体。
为了避免单个电芯模块210热失控时蔓延至其他电芯模块210，在某些实施例中，箱体总成100还包括设于边框110内的至少一个第二横梁130和至少一个纵梁140，第二横梁130和纵梁140均位于主安装区102中、并将主安装区102分隔为若干电池舱103。第一板件10和第二板件20均与第二横梁130和纵梁140密封连接，以使各个电池舱103形成封闭且相互独立的空间，若干电芯模块210一一对应设于若干电池舱103中。通过将各个电池舱103形成封闭且相互独立的空间，能够在某个电池舱103的电芯模块210发生热失控时有效阻断电池包1000热蔓延，防止高温烟气进入其他电池舱103中。
第二横梁130和纵梁140的数量根据电芯模块210的数量而确定，如图1所示，示出了具有4个电芯模块210的电池包1000，则第二横梁130和纵梁140均只有一个。若电芯组件200包括呈2*3矩阵分布的6个电芯模块210，则对应需要设置两个第二横梁130和一个纵梁140。
上盖300与第一板件10之间的间隙用于走线，可以将上盖300与第一板件10间隔设置以形成走线空间，也可以利用上盖300自身的加强筋413所形成的空间走线，具体结构本申请不做限制。在某些实施例中，上盖300与第一板件10间隔设置，以合围成用于走线的走线空间，由于第一板件10仅覆盖于主安装区102的上方开口，因此位于第一板件10上方的走线空间与控制舱101相连通，高压铜排、低压线束等导电件230均可从第一板件10中穿过，在走线空间中延伸并与控制舱101中的控制组件500电连接。走线空间与控制舱101连通，使得高压铜排和低压线束均可正常连接至控制组件500，由于走线空间与控制舱101均与主安装区102隔离，因此主安装区102内的高温烟气不会蔓延至走线空间与控制舱101，避免发生控制组件500内部电子元件粘连无法上下高压电等故障。
请参阅图4，在某些实施例中，由于各个电池舱103之间均相对封闭且相互独立，用于实现电芯模块210之间的电连接的连接铜排220同样通过过线通道11伸入于走线空间、且通过过线密封件12密封，过线密封件12可以是密封胶或者密封圈。也就是说，连接铜排220的两个连接端通过过线通道11伸入不同的电池舱103中，并与两个电芯模块210分别电连接，而连接铜排220的主体部分位于走线空间中、并跨越第二横梁130或纵梁140。
请参阅图2，在某些实施例中，控制组件500包括电连接的控制装置510和配电装置520，控制装置510可以是BMS（电池管理系统），配电装置520可以是BDU（电池能量分配单元，也称高压配电盒）。控制装置510和配电装置520沿横向（横梁的轴向）并排设置。在某些实施例中，控制装置510采用一主多从的拓扑框架，包括一个主控单元和两个以上从控单元。相对应的，导电件230包括用于连接电芯组件200与配电装置520的输出铜排231，以及用于连接电芯组件200与控制装置510的低压采样线束232。也即，低压采样线束232与各个电芯模块210均电连接，用于采集电芯模块210的电压、电流、温度中的至少一种；输出铜排231用于实现整个电芯组件200与配电装置520的高压电连接。
在某些实施例中，电池包1000还设有热失控传感器，热失控传感器同样与控制装置510电连接。热失控传感器通常安装在电池舱103中，可以获取电池舱103中的颗粒物浓度、温度、气压等，以此判断该电池舱103中是否发生热失控。当然，热失控传感器还可以检测其他的特征参数，或者安装于电池包1000的其他位置，热失控传感器是成熟的现有技术，具体内容均可参考现有技术的相关公开，本申请不做限制。控制装置510根据热失控传感器的反馈信号判断电池包1000内是否发生热失控，当热失控传感器通常安装在电池舱103中，则热失控传感器与控制装置510电连接的线束也需要通过过线通道11伸入于走线空间、且通过过线密封件12密封。
请参阅图3，在某些实施例中，过线通道11包括间隔分布的第一过孔11a、若干第二过孔11b和若干第三过孔11c，输出铜排231伸入第一过孔11a中，连接铜排220伸入第二过孔11b中，低压采样线束232伸入第三过孔11c中。第一过孔11a、第二过孔11b和第三过孔11c的位置根据电芯模块210中高压连接位211和低压采样口212的位置而确定，本申请不做限制。
请参阅图6，示出了某些实施例中电芯模块210的结构示意图，电芯模块210的高压连接位211和低压采样口212分布于不同侧边，电芯模块210安装时高压连接位211靠近于边框110、低压采样口212靠近于第二横梁130或纵梁140。相对应的，第一过孔11a和若干第二过孔11b均分布于第一板件10的边缘；第三过孔11c分布于第一板件10的中部，从而实现高低压分隔。在某些实施例中，高压连接位211和低压采样口212分布于电芯模块210的相同侧边，并且电芯模块210安装时高压连接位211靠近于边框110，则第一过孔11a、第二过孔11b和第三过孔11c均分布于第一板件10的边缘。通过将第一过孔11a、第二过孔11b和第三过孔11c设置于第一板件10的边缘和/或中部，使得线束的延伸尽量位于边框110、第二横梁130、纵梁140的上方，可以将第二横梁130、纵梁140的高度设置为低于边框110，使得第一板件10的对应位置能够形成下沉区域，以容纳线束。
请参阅图3和图4，在某些实施例中，第一板件10设有加强筋413，提高第一板件10的刚度，过线通道11设于加强筋413中，由于加强筋413所在处结构强度和刚度均较好，因此在加强筋413中开设过线通道11不会过多的降低第一板件10的强度 。
第一板件10和第二板件20与箱体总成100的密封连接可以是通过挤压密封件、焊接或者涂抹密封胶等方式实现，本申请不做限制。请参阅图1，在某些实施例中，第一横梁120、第二横梁130、纵梁140以及边框110的边横梁上均设有密封垫50，第一板件10、箱体总成100和第二板件20共同压缩密封垫50，实现各个电池舱103之间相互密封。
由于上盖300和第二板件20分别密封连接于箱体总成100且覆盖于边框110的内腔的上方和下方开口，形成电池包1000整包密封，在某些实施例中，上盖300和第二板件20均与箱体总成100采用FDS（流钻螺钉）连接，且连接处涂覆有密封胶，满足电池包1000的IP67密封需求。同时，上盖300和第二板件20均与箱体总成100采用FDS连接，使得上盖300和第二板件20与箱体总成100稳定连接，以承受Z向载荷，上盖300能够向第一板件10施加用于压缩密封垫50的作用力。
第一板件10与箱体总成100的密封连接满足热失控气流不向外扩散即可，密封需求低于IP67密封需求，因此第一板件10与箱体总成100可以采用FDS连接或者通过螺钉连接，且连接处涂覆有密封胶实现密封。
上盖300与第一板件10可以是两个独立的零件，也可以是集成为一体。在某些实施例中，上盖300与第一板件10均为金属材质，二者焊接为一体。连接铜排220、输出铜排231、低压采样线束232等预先设于上盖300与第一板件10之间，其接口部分通过第一板件10的过线通道11伸出，以与控制组件500和电芯组件200电连接。上盖300与箱体总成100连接后同步实现第一板件10与箱体总成100的密封连接。
请参阅图5、图7和图8，在某些实施例中，防爆阀30设于边框110的外壁，箱体总成100的内壁对应于主安装区102的位置设有至少一个单向阀40，边框110和第一横梁120均具有相连通的排气通道104，单向阀40和防爆阀30均与排气通道104连通，通过设置单向阀40和防爆阀30能够将热失控产生的高温物质定向释放到电池包1000外部，防止包内其他电芯收到二次伤害，减小热失控带来的损失。因此，本申请一个或多个实施例提供的电池包1000，对电芯种类和结构没有要求，适用于本身设有防爆阀30的方壳电芯，也适用于单体电芯无防爆阀30的软包电芯和圆柱电芯，因此，在某些实施例中，电芯组件200的电芯为软包电芯或圆柱电芯。
当电芯组件200中发生热失控，由于单向阀40与主安装区102位置对应，高温烟气能够通过单向阀40进入边框110和第一横梁120的排气通道104中，但排气通道104中烟气无法倒排进控制舱101与主安装区102内，排气通道104中烟气通过防爆阀30排出电池包1000外。通过排气通道104的设置，延长高温烟气外排之前的流通路径，第一方面排气通道104可以存储一定体积的高温烟气，起到缓冲作用，降低防爆阀30排出的气流的冲击力；第二方面高温烟气在排气通道104中流通时温度逐渐降低，减小防爆阀30排出的气流的高温危害；第三方面，高温烟气在排气通道104中流通时，一些颗粒物会向下沉降，从而降低防爆阀30喷发气流中导电颗粒物的含量，降低防爆阀30喷发气流对车辆其他电器件的影响。
当边框110内部形成有多个电池舱103时，可以将第二横梁130和/或纵梁140同样设置为空心结构。也就是说，第二横梁130和/或纵梁140中同样具有排气通道104，且第二横梁130和/或纵梁140的排气通道104与边框110的排气通道104连通。在某些实施例中，边框110、第一横梁120、第二横梁130和纵梁140均为挤压成型的铝型材，内部具有型腔，该型腔即可形成排气通道104。将边框110、第一横梁120、第二横梁130和纵梁140的连接处的型材外蒙皮去除，并将型腔相对，随后进行焊接，即可使得边框110、第一横梁120、第二横梁130和纵梁140内部的型腔全部导通，如图7所示。
请参阅图9，在某些实施例中，为了降低高温烟气对控制舱101的影响，在边框110的两个边纵梁111内部分别设置两个隔板160，两个隔板160与第一横梁120位置对应。两个隔板160阻断两个边纵梁111的型腔，使得边纵梁111中控制舱101所对应部分的型腔与主安装区102所对应部分的型腔不连通，高温烟气不会进入控制舱101所对应位置，降低控制舱101内部的升温速率。相对应的，防爆阀30设置于主安装区102所对应部分的边框110上，如图5所示，控制舱101所对应部分的边框110上不设置防爆阀30。
隔板160可以是由第一横梁120两端向外延伸出的两个平板，两个平板伸入于边纵梁111的型腔中，从而将边纵梁111的型腔隔断为两个部分。隔板160也可以是独立设置的板件，通过胶粘、焊接、紧固件等方式与第一横梁120连接固定，以封闭控制舱101所对应部分。
当边框110内部形成有多个电池舱103时，每个电池舱103均对应配置一个以上单向阀40。单向阀40可以设置在边框110、第一横梁120、第二横梁130或纵梁140上，其具体安装位置本申请不做限制。每个电池舱103均可对应配置一个以上防爆阀30，防爆阀30设于边框110的外壁。当电芯组件200的某个电芯模块210发生热失控，其所在的电池舱103压力升高，热失控产生的高温物质通过单向阀40进入到排气通道104中，首先将整个排气通道104全部充满。其他电池舱103受单向阀40的限制，排气通道104内部气体无法倒排入内。待排气通道104内压力升高至防爆阀30的开启阈值后，排气通道104的烟气再通过防爆阀30释放到外部。
请参阅图8，在某些实施例中，单向阀40和防爆阀30均设于边框110上，且与若干电池舱103一一对应。与同一个电池舱103对应的单向阀40与防爆阀30错位分布，一方面避免电池舱103中的高温烟气未经过缓冲直接从防爆阀30喷发，对车辆的外部结构产生不利影响；另一方面，单向阀40与防爆阀30所在位置属于边框110的薄弱处，通过将薄弱处错位分布，避免出现边框110局部内外均薄弱的情况，保证边框110的结构强度。
第一板件10和第二板件20可以是电池包1000中单独设置的板件，也可以将电池包1000自有零件作为第一板件10和第二板件20。请参阅图1、图10和图11，在某些实施例中，电池包1000还包括冷却组件，冷却组件包括上液冷板410和下液冷板420，上液冷板410和下液冷板420分别构成第一板件10和第二板件20，电芯组件200设于下液冷板420上。上下双层液冷可以有效提高降温速率，降低热失控风险。
上液冷板410和下液冷板420之间可以通过软管连通，则电池包1000只需要设置一个进水口和一个出水口。在某些实施例中，上液冷板410和下液冷板420为两个独立的冷却系统，二者不连通，边框110上对应设置两个进水口和两个出水口。在某些实施例中，也可在边框110上设置转接头，转接头内腔实现一进两出的分流功能。
请参阅图1，在某些实施例中，电池包1000还包括底护板600，底护板600位于电池包1000的最下方，底护板600与箱体总成100连接，保护下液冷板420。底护板600与箱体总成100之间以及底护板600与下液冷板420之间均密封设置。
由于第一板件10和第二板件20均为液冷板，在某些实施例中，上盖300与上液冷板410之间以及底护板600与下液冷板420之间均设有保温泡棉，一方面起保温隔热作用，另一方面能够支撑上盖300、上液冷板410、底护板600与下液冷板420，提高模态。
请参阅图10和图11，示出了某些实施例中上液冷板410的正面和背面的结构示意图，上液冷板410和下液冷板420均包括平面板411和流道板412，流道板412上冲压有流道414结构，装配时流道板412朝向电芯组件200。平面板411和流道板412上均设有加强筋413，加强筋413与流道414错位分布。平面板411与流道板412焊接固定，焊线位于平面板411与流道板412的边缘部位以及加强筋413所在处。过线通道11设于上液冷板410的加强筋413中，不占用流道414所在空间，如图11所示。
下面以图1和图2所示电池包1000为例，对本申请的电池包1000在发生热失控时的工作原理进行说明：
上液冷板410、下液冷板420与边框110、第一横梁120、第二横梁130和纵梁140，将电池包1000内部隔离出独立的密闭空间——电池舱103，若干软包电芯形成的电芯模块210放在下液冷板420上且位于上述电池舱103中，上下双层液冷可以有效提高降温速率降低热失控风险。
当某个软包电芯发生热失控时，对应的电芯模块210所在电池舱103压力升高，热失控产生的高温物质通过单向阀30进入到横、纵梁和边框110的排气通道104中，将整个排气通道104全部充满。待排气通道104内压力升高至防爆阀30的开启阈值后，多个防爆阀30同时开启，排气通道104的烟气通过多个防爆阀30释放到外部。上液冷板410的密封将热失控产生的烟气控制在单个电池舱103中，其他电池舱103受单向阀40的限制，排气通道104内部气体无法倒排入内，防止电池包1000内其他电芯模块210受到二次伤害，减小热失控带来的损失。
同时上液冷板410将BDU和BMS均与电芯分隔开来，电池包1000的高压铜排的连接与低压采样线的排布都是在上液冷板410的上部，通过过线通道11实现相邻电池舱103的连接铜排220和低压采样线束232的连接，过线通道11处通过过线密封件12密封，从而保证电芯热失控的烟气不会弥漫到BDU和BMS处，避免发生BDU内部继电器粘连无法上下高压电的等问题。
根据本申请一个或多个实施例提供的电池包1000，具有如下优点：
1）箱体总成100、第一板件10和第二板件20隔离出独立的密闭空间用于安装电芯组件200，同时第一板件10将控制组件500和线束均与电芯分隔开来，杜绝了电芯热失控烟气导致控制组件500内部电子元件粘连和线束短路等问题，实现热电分离，提高电池包1000安全性。
2）上下两层液冷板可以对电芯双面冷却，提高了冷却速率，减低热失控风险。
3）利用边梁和内部横、纵梁140的内部空间作为排气通道104，配合单向阀40和防爆阀30实现定向喷发，阻断电池包1000热蔓延，提高电池包1000安全性。且对电芯种类和结构没有要求，适用于所有类型电芯。
4）各个防爆阀30与排气通道104均连通，热盛热失控时所有防爆阀30可以同时开启，快速降低电池包1000内部压力，降低电池包1000爆炸风险。
本申请第二方面实施例，提供一种车辆，包括上述第一方面任一实施例的电池包1000。该车辆具体包括车身和电池包1000，电池包1000安装于车身上，电池包1000可以集成于车身的底盘中，或者安装于车身的地板的下方。
在某些实施例中，电池包1000的边框110的两个边纵梁111分别通过挂载螺栓连接于车身的门槛梁，边纵梁111的挂载部112伸入于门槛梁下方与门槛梁连接。在某些实施例中，电池包1000的第二横梁130上同样设置有挂载螺栓，第二横梁130通过挂载螺栓连接于车身的地板总成。为避免电池包1000热失控时对挂载部112的挂载结构产生冲击，防爆阀30的位置应该与挂载部112的挂载孔错位分布。
若电池包体积较大，在某些实施例中，请参阅图1、图7和图8，电池包1000还包括若干挂载支架150，挂载支架150分布于边框110的前后两端（X向），挂载支架150通过挂载螺栓连接于车身的地板总成。电池包1000与车身连接主要通过侧边的挂载部112承受压力，前部和后部的挂载支架150起辅助作用，分摊压力。
在本申请中，除非另有明确的规定和限定，第一特征在第二特征之“上”或之“下”可以包括第一和第二特征直接接触，也可以包括第一和第二特征不是直接接触而是通过它们之间的另外的特征接触。而且，第一特征在第二特征“之上”、“上方”和“上面”包括第一特征在第二特征正上方和斜上方，或仅仅表示第一特征水平高度高于第二特征。第一特征在第二特征“之下”、“下方”和“下面”包括第一特征在第二特征正下方和斜下方，或仅仅表示第一特征水平高度小于第二特征。
在本申请的描述中，需要理解的是，术语“中心”、“纵向”、“横向”、“长度”、“宽度”、“厚度”、“上”、“下”、“前”、“后”、“左”、“右”、“竖直”、“水平”、“顶”、“底”、“内”、“外”、“顺时针”、“逆时针”指示的方位或位置关系为基于附图所示的方位或位置关系，仅是为了便于描述本申请和简化描述，而不是指示或暗示所指的装置或元件必须具有特定的方位、以特定的方位构造和操作，因此不能理解为对本申请的限制。
在本申请中，除非另有明确的规定和限定，术语“连接”、“固定”等应做广义理解，例如，“固定”可以是固定连接，也可以是可拆卸连接，或成一体；可以是机械连接，也可以是电连接；可以是直接相连，也可以通过中间媒介间接相连，可以是两个元件内部的连通或两个元件的相互作用关系。对于本领域的普通技术人员而言，可以根据具体情况理解上述术语在本申请中的具体含义。
另外，在本申请中如涉及“第一”、“第二”等的描述仅用于描述目的，而不能理解为指示或暗示其相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括一个或者多个特征。在本申请的描述中，“多个”的含义是两个或两个以上，除非另有明确具体的限定。
尽管已经示出和描述了本申请的实施方式，本领域的普通技术人员可以理解：在不脱离本申请的原理和宗旨的情况下可以对这些实施方式进行多种变化、修改、替换和变型，本申请的范围由权利要求及其等同物限定。

Claims (14)

  1. 一种电池包，包括：
    箱体总成，包括边框和设于所述边框内的第一横梁，所述边框的内腔通过所述第一横梁分隔为控制舱和主安装区；所述边框上设有至少一个用于连通所述主安装区与外界的防爆阀； 
    上盖，密封连接于所述箱体总成且覆盖于所述边框的内腔的上方开口；
    第一板件和第二板件，间隔设于所述上盖的下方； 
    电芯组件，设于所述主安装区；
    控制组件，设于所述控制舱、且通过导电件与所述电芯组件电连接；
    其中，所述第一板件密封连接于所述箱体总成且覆盖于所述主安装区的上方开口，所述第二板件密封连接于所述箱体总成且覆盖于所述边框的内腔的下方开口，以使所述主安装区与所述控制舱形成相互独立的空间；所述第一板件上设有用于供所述导电件穿过的过线通道，所述导电件与所述过线通道的间隙中设有过线密封件。
  2. 根据权利要求1所述的电池包，其中，所述箱体总成还包括设于所述边框内的至少一个第二横梁和至少一个纵梁，所述第二横梁和所述纵梁均位于所述主安装区中、并将所述主安装区分隔为若干电池舱；
    所述第一板件和所述第二板件均与所述第二横梁和所述纵梁密封连接，以使各个所述电池舱形成封闭且相互独立的空间；
    所述电芯组件包括通过连接铜排电连接的若干电芯模块，若干所述电芯模块一一对应设于若干所述电池舱中。
  3. 根据权利要求2所述的电池包，其中，所述上盖与所述第一板件间隔设置，以合围成与所述控制舱连通的走线空间；所述连接铜排以及所述导电件均通过所述过线通道伸入于所述走线空间、且通过所述过线密封件密封。
  4. 根据权利要求3所述的电池包，其中，所述控制组件包括电连接的控制装置和配电装置，所述导电件包括用于连接所述电芯组件与所述配电装置的输出铜排，以及用于连接所述电芯组件与所述控制装置的低压采样线束；
    所述过线通道包括间隔分布的第一过孔、若干第二过孔和若干第三过孔；所述输出铜排伸入所述第一过孔中，所述连接铜排伸入所述第二过孔中，所述低压采样线束伸入所述第三过孔中。
  5. 根据权利要求4所述的电池包，其中，所述第一过孔和若干第二过孔均分布于所述第一板件的边缘；所述第三过孔分布于所述第一板件的边缘和/或中部；
    所述第一板件设有加强筋，所述过线通道设于所述加强筋中。
  6. 根据权利要求2-5中任一项所述的电池包，其中，所述第一横梁、所述第二横梁、所述纵梁以及所述边框的边横梁上均设有密封垫，所述第一板件、所述箱体总成和所述第二板件共同压缩所述密封垫。
  7. 根据权利要求6所述的电池包，其中，所述上盖和所述第二板件均与所述箱体总成FDS连接，且连接处涂覆有密封胶；所述上盖向所述第一板件施加用于压缩所述密封垫的作用力；
    所述第一板件与所述箱体总成FDS连接或者通过螺钉连接，且连接处涂覆有密封胶；或者，所述上盖与所述第一板件焊接为一体。
  8. 根据权利要求2-5中任一项所述的电池包，其中，所述箱体总成的内壁对应于所述主安装区的位置设有至少一个单向阀，所述防爆阀设于所述边框的外壁，所述边框和所述第一横梁均具有相连通的排气通道，所述单向阀和所述防爆阀均与所述排气通道连通。
  9. 根据权利要求8所述的电池包，其中，所述第二横梁和/或所述纵梁中同样具有所述排气通道，且所述第二横梁和/或所述纵梁的所述排气通道与所述边框的所述排气通道连通。
  10. 根据权利要求8所述的电池包，其中，所述单向阀和所述防爆阀均设于所述边框上，且与若干所述电池舱一一对应；所述单向阀与所述防爆阀错位分布。
  11. 根据权利要求1-5中任一项所述的电池包，其中，所述电池包还包括冷却组件，所述冷却组件包括上液冷板和下液冷板，所述上液冷板和所述下液冷板分别构成所述第一板件和所述第二板件；所述电芯组件设于所述下液冷板上。
  12. 根据权利要求11所述的电池包，其中，所述上液冷板和所述下液冷板均包括平面板和流道板，所述流道板朝向所述电芯组件；所述平面板和所述流道板上均设有加强筋，所述平面板与所述流道板的边缘部位以及所述加强筋所在处焊接；所述过线通道设于所述加强筋中。
  13. 根据权利要求1-5中任一项所述的电池包，其中，所述电芯组件的电芯为软包电芯或圆柱电芯。
  14. 一种车辆，包括权利要求1-13中任一项所述的电池包。
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