WO2023240872A1 - 电池包 - Google Patents
电池包 Download PDFInfo
- Publication number
- WO2023240872A1 WO2023240872A1 PCT/CN2022/127211 CN2022127211W WO2023240872A1 WO 2023240872 A1 WO2023240872 A1 WO 2023240872A1 CN 2022127211 W CN2022127211 W CN 2022127211W WO 2023240872 A1 WO2023240872 A1 WO 2023240872A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- battery
- battery pack
- hole
- glue
- pack according
- Prior art date
Links
- 239000003292 glue Substances 0.000 claims description 65
- 238000012423 maintenance Methods 0.000 claims description 11
- 238000004891 communication Methods 0.000 claims description 8
- 238000002347 injection Methods 0.000 claims description 8
- 239000007924 injection Substances 0.000 claims description 8
- 238000009434 installation Methods 0.000 claims description 8
- 238000003860 storage Methods 0.000 claims description 8
- 230000000149 penetrating effect Effects 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 14
- 230000001070 adhesive effect Effects 0.000 description 14
- 238000001816 cooling Methods 0.000 description 9
- 238000010586 diagram Methods 0.000 description 6
- 238000004880 explosion Methods 0.000 description 5
- 230000001965 increasing effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 238000012546 transfer Methods 0.000 description 4
- 239000000110 cooling liquid Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- HBBGRARXTFLTSG-UHFFFAOYSA-N Lithium ion Chemical compound [Li+] HBBGRARXTFLTSG-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 229910001416 lithium ion Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000003892 spreading Methods 0.000 description 1
Images
Classifications
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- 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
- 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
- H01M50/204—Racks, modules or packs for multiple batteries or multiple cells
- H01M50/207—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape
- H01M50/213—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for cells having curved cross-section, e.g. round or elliptic
-
- 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
- H01M50/30—Arrangements for facilitating escape of gases
-
- 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
- H01M50/35—Gas exhaust passages comprising elongated, tortuous or labyrinth-shaped exhaust passages
Definitions
- the present application relates to the field of battery technology, for example, to a battery pack.
- the pressure is usually relieved by setting a guide channel at the bottom of the box and a pressure relief valve on the side wall of the box.
- the high-temperature gas can flow to the pressure relief valve along the guide channel.
- the guide channel limits the high-temperature gas. Due to the diffusion range, the high-temperature gas accumulated in the pressure relief channel will easily cause the local temperature in the box to be too high, and the pressure relief and cooling effect will be poor.
- This application provides a battery pack.
- high-temperature gas can be dispersed in time, thus having higher safety performance.
- An embodiment of the present application provides a battery pack, including a plurality of battery cells, and the battery pack further includes:
- the box is provided with a support beam inside the box.
- the support beam divides the inside of the box into a plurality of compartments.
- Channel, the connecting channel connects two adjacent compartments;
- At least two battery modules are arranged in the compartment.
- a pad is provided on the inner bottom surface of the box, and the support beam is provided on the pad to form the communication channel.
- a pressure relief port is provided on the side wall of the box.
- a side beam is provided on the outer wall of the box, and the side beam has a pressure relief channel running through both ends.
- the pressure relief port is connected to the pressure relief channel, and the battery core is heated.
- the high-temperature gas generated out of control can be discharged to the outside of the box through the compartment, the pressure relief port and the pressure relief channel in sequence.
- an electrical chamber is provided in the box, and the battery pack further includes a maintenance upper cover.
- the maintenance upper cover is provided on the electrical chamber and connected to the box.
- the battery module includes a tray, the battery core is arranged on the tray, and a pressure relief hole is provided at the bottom of the tray, so that high-temperature gas generated by thermal runaway of the battery core can pass through the tray.
- the pressure relief hole discharges into the compartment.
- a bracket is provided on the tray, and the battery core is placed on the bracket.
- a plurality of through holes are provided on the bracket, and the high-temperature gas generated by the thermal runaway of the battery core can pass through all the holes in sequence.
- the through hole and the pressure relief hole are discharged into the compartment.
- the battery module further includes structural glue, and a glue overflow hole is provided on the bracket, and the glue overflow hole is disposed facing the gap between adjacent battery cells, and the tray and the There is a glue injection space between the brackets, and the structural glue can be filled in the gap, the glue overflow hole and the glue injection space.
- the bracket is provided with a plurality of convex ribs, the convex ribs are arranged toward the tray, and the convex ribs are used to increase the contact area between the structural glue and the bracket.
- the bracket is provided with a plurality of positioning parts
- the bottom surface of the bracket has a plurality of placement parts
- the positioning parts and the placement part form positioning grooves
- the through hole is provided in the placement part.
- the battery core is arranged in the positioning groove.
- a plurality of annular ribs are provided at the bottom of the placing part, the annular ribs are arranged in contact with the tray, and both ends of the annular ribs are connected to the through holes and the pressure relief holes respectively.
- the positioning part includes a plurality of positioning blocks, and the plurality of positioning blocks are spaced apart along the outer periphery of the placing part.
- grooves are provided on the side of the positioning block.
- the thickness of the top of the positioning block is smaller than the thickness of the bottom.
- the battery module further includes a fixing frame.
- the fixing frame is arranged on the top of the battery core.
- the fixing frame is provided with a plurality of positioning protrusions.
- the positioning protrusions extend into the corresponding positioning protrusions. It is disposed adjacent to the gap between the two battery cores and in contact with the side surface of the battery core.
- the battery module further includes a bus bar
- the fixing frame is further provided with a mounting hole
- the bus bar is embedded in the mounting hole
- the bus bar is arranged in contact with the battery core. Electrically connect a plurality of the battery cores.
- the bus bar includes a positive electrode connection part and a negative electrode connection part
- the mounting hole includes a positive electrode mounting hole and a negative electrode mounting hole
- the positive electrode connection part passes through the positive electrode mounting hole and the positive electrode of the battery core. Electrically connected, the negative electrode connecting portion is electrically connected to the negative electrode of the battery core through the negative electrode mounting hole.
- the busbar is provided with positioning holes
- the fixing frame is provided with positioning posts
- the positioning posts are inserted through the positioning holes.
- the battery module further includes thermally conductive glue, which is disposed on the end surfaces of the fixing bracket and the busbar to bond the fixing bracket and the busbar.
- the fixing frame is provided with a mounting slot
- the bus bar is arranged in the mounting slot
- the mounting hole is arranged at the bottom of the mounting slot
- the side of the bus bar is in contact with the mounting slot.
- the bottom of the installation groove and the side wall of the installation groove form a glue storage tank, and the glue storage tank can accommodate the thermally conductive glue.
- the fixing frame is provided with a glue hole
- the glue hole is located at the top of the battery core
- the thermally conductive glue can be filled in the glue hole and connected with the top of the battery core. touch.
- the battery pack provided by this application divides the interior of the box into multiple compartments by setting support beams.
- the compartments are used to place battery modules. Since there is a communication channel between the bottom of the support beam and the inner bottom of the box, , adjacent compartments are connected to each other.
- the high-temperature gas it generates can diffuse to other compartments through the connecting channels, thereby avoiding heat concentration and playing a cooling role, effectively avoiding risks such as explosion of the battery pack and improving the efficiency of the battery pack. Improve the safety performance of the battery pack.
- Figure 1 is a schematic structural diagram of a box provided by an embodiment of the present application.
- Figure 2 is a schematic structural diagram of the box provided by the embodiment of the present application.
- FIG. 3 is an exploded view of the battery pack provided by the embodiment of the present application.
- FIG. 4 is an exploded view of the battery module provided by the embodiment of the present application.
- Figure 5 is a schematic structural diagram of the bracket provided by the embodiment of the present application.
- Figure 6 is a second structural schematic diagram of a bracket provided by an embodiment of the present application.
- Figure 7 is a schematic structural diagram of a fixation bracket provided by an embodiment of the present application.
- Figure 8 is a schematic assembly diagram of the busbar and the fixing bracket provided by the embodiment of the present application.
- first position and second position are two different positions, and the first feature “on”, “above” and “above” the second feature include the first feature on the second feature. Directly above and diagonally above, or simply means that the level of the first feature is higher than that of the second feature. “Below”, “under” and “under” the first feature is the second feature includes the first feature being directly below and diagonally below the second feature, or simply means that the first feature is less horizontally than the second feature.
- connection should be understood in a broad sense.
- it can be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
- connection should be understood in a broad sense.
- it can be a fixed connection or a detachable connection. Or integrally connected; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be an internal connection between two components.
- this embodiment provides a battery pack including a plurality of battery cells 10 .
- the battery pack further includes a box 100 and a plurality of battery modules 200 .
- a support beam 110 is provided inside the box 100.
- the support beam 110 divides the inside of the box 100 into a plurality of compartments.
- the connecting channels will be adjacent to each other.
- the two compartments are connected.
- the battery module 200 is arranged in the compartment.
- the above-mentioned battery pack divides the interior of the box 100 into multiple compartments by providing support beams 110.
- the compartments are used to place the battery modules 200. Since there is a communication channel between the bottom of the support beam 110 and the inner bottom surface of the box 100 , therefore, adjacent compartments are connected to each other.
- the high-temperature gas generated by the thermally runaway battery cells can diffuse to other compartments through the connecting channels, thereby avoiding heat concentration, cooling down, and effectively preventing the battery from being heated.
- the safety performance of the battery pack is improved by eliminating the dangers such as explosion of the battery pack.
- the support beam 110 is in a cross shape, dividing the interior of the box 100 into four compartments, in which four battery modules 200 can be placed.
- Side beams 120 are also provided around the interior of the box 100 .
- the end faces of the side beams 120 are flush with the end faces of the support beams 110 , so that the side beams 120 and the support beams 110 can support the battery module 200 .
- the support beam 110 includes a cross beam and a longitudinal beam.
- the cross beam is arranged along the central axis in the width direction of the box 100 .
- the longitudinal beam is arranged along the central axis in the length direction of the box 100 .
- the longitudinal beam is disconnected in the middle and connected to the cross beam.
- a cushion block 130 is provided on the inner bottom surface of the box 100 , and a support beam 110 is provided on the cushion block 130 .
- the arrangement of the pads 130 creates a gap between the support beam 110 and the inner bottom surface of the box 100, thereby forming a communication channel to connect adjacent compartments.
- communication holes 221 can also be opened on the support beam 110 to connect adjacent compartments.
- the support beam 110 and the pad 130 are connected by welding, and of course, bonding or connection may also be used.
- the bottom plate and side walls of the box 100 are connected by full welding to ensure structural strength.
- a pressure relief port 140 is provided on the side wall of the box 100 for releasing high-temperature gas.
- side beams 150 can also be provided on the outer wall of the box 100.
- the side beams 150 have pressure relief channels 151 that run through both ends.
- the pressure relief ports 140 are connected to the pressure relief channels 151. Therefore, thermal runaway of the battery core 10 occurs.
- the high-temperature gas can be discharged to the outside of the box 100 through the compartment, the pressure relief port 140 and the pressure relief channel 151 in sequence.
- the side beam 150 is located on the outer wall of the box 100 in the length direction. Since the side beam 150 is long, high-temperature gas flows through the pressure relief channel 151 and the temperature is reduced, thereby reducing the risk of explosion or fire of the battery pack. .
- an electrical chamber is provided inside the box 100 .
- the battery pack also includes a maintenance upper cover 160 .
- the maintenance upper cover 160 is disposed on the electrical chamber and connected to the box 100 .
- a sealing strip 180 can be provided between the maintenance upper cover 160 and the box 100 .
- the electrical chamber is separately sealed with a maintenance cover 160. When an electrical component fails, only the maintenance cover 160 is removed. Yes, easy maintenance and less operating costs.
- the battery pack also includes a liquid-cooling upper cover 170 . The liquid-cooling upper cover 170 is located on the compartment and connected to the box 100 .
- the liquid cooling upper cover 170 can seal the battery module 200 in the compartment.
- the connection strength can be increased by providing battens 190 .
- the liquid-cooling upper cover 170 is provided with a cooling liquid channel 171 , and the cooling liquid channel 171 is provided with cooling liquid, which can reduce the temperature of the battery module 200 .
- the liquid cooling plate and box cover in the relevant battery structure are integrated into one body, which reduces the number of parts and components, lowers the overall cost, improves assembly efficiency, and makes the overall structure more compact.
- the battery module 200 includes a tray 210.
- the battery core 10 is arranged on the tray 210.
- a pressure relief hole 211 is provided at the bottom of the tray 210.
- the high-temperature gas generated by the thermal runaway of the battery core 10 can pass through the pressure relief hole. 211 is discharged into the compartment.
- the tray 210 is made of metal and has sufficient structural strength.
- the tray 210 mainly includes a bottom plate and side plates vertically connected to the bottom plate.
- the pressure relief hole 211 is set on the bottom plate.
- the position of the pressure relief hole 211 is set according to the arrangement of the battery cells 10 to ensure that the two are facing each other, thereby enabling high temperature The gas escapes quickly.
- the edges of the side panels are connected with flanges. When the battery module 200 and the box 100 are assembled, the flanges are set up on the support beams 110 or the side beams 120 , and screws can be used to lock the flanges to the box. Body 100.
- the tray 210 is provided with a bracket 220, and the battery is placed on the bracket 220.
- the bracket 220 is provided with a plurality of through holes 221, and the high-temperature gas generated by the thermal runaway of the battery core 10 can pass through the through holes 221 and the pressure relief hole 211 in sequence. Discharge into the compartment.
- the through hole 221 and the pressure relief hole 211 are arranged in one-to-one correspondence, and the through hole 221 and the battery core 10 are arranged in one-to-one correspondence.
- the bracket 220 is made of plastic or other materials with good insulation properties, which can insulate and isolate the battery core 10 and the tray 210 to prevent the two from contact and short circuit.
- the battery module 200 also includes a structural glue 230.
- the bracket 220 is provided with a glue overflow hole 222.
- the glue overflow hole 222 is located facing the gap between adjacent cells 10. There is a space for glue injection between the tray 210 and the bracket 220.
- the structure The glue 230 can be filled in the gaps, glue overflow holes 222 and glue injection spaces, thereby bonding the battery core 10, the bracket 220 and the tray 210 together.
- the structural adhesive 230 can also play the role of insulation to prevent adjacent cells 10 from contacting and causing short circuits.
- the bracket 220 is provided with a positioning portion.
- the bottom surface of the bracket 220 has a plurality of placement portions 226.
- the positioning portion and the placement portions 226 form positioning grooves.
- the through hole 221 is provided at the bottom of the placement portion 226.
- the battery core 10 is arranged in the positioning groove.
- the placement portion 226 is annular, and the positioning portion is provided on the outer periphery of the placement portion 226 .
- the glue overflow hole 222 is roughly triangular in shape according to the shape of the gap between the battery cores 10
- the through hole 221 is circular in shape according to the shape of the battery cores 10
- the glue overflow hole 222 and the through hole 222 are arranged in a circular shape according to the shape of the battery cores 10 .
- the shape of the hole 221 can be determined according to actual conditions.
- the positioning part includes a plurality of positioning blocks 225, and the plurality of positioning blocks 225 are arranged at intervals. Both sides of the positioning block 225 are arc-shaped surfaces, and the two arc-shaped surfaces are respectively arranged toward two different battery cores 10 .
- the positioning part may also be a cylindrical structure provided on the outer periphery of the placing part 226 and extending to the top of the battery core 10 , or a plurality of arc-shaped plate structures provided along the outer periphery of the positioning part, as long as it can The structural forms of the battery core 10 that play a positioning role are within the protection scope of this application.
- the positioning block 225 is provided at the connection of adjacent placement parts 226 .
- six placement portions 226 are connected around each placement portion 226 . Therefore, six positioning blocks 225 are provided on the outer periphery of the placement portion 226 .
- the number of positioning blocks 225 may be three, five or other numbers, and the positions of the positioning blocks 225 may be set according to the actual arrangement of the battery cells 10 .
- the thickness of the top of the positioning block 225 is smaller than the thickness of the bottom, and the width of the top is smaller than the width of the bottom.
- the positioning block 225 adopts such a structure that is thin at the top and thick at the bottom, narrow at the top and wide at the bottom, which can increase the distance between the structural adhesive 230 and the positioning block 225.
- the contact area between the structural adhesive 230 and the battery core 10 makes the bonding stronger, the battery core 10 and the bracket 220 are not easy to loosen, and it can make the bracket 220 demoulding more convenient and reduce manufacturing difficulties.
- grooves can be provided on the sides of the positioning block 225, which can accommodate the structural glue 230.
- grooves are provided on both sides of the positioning block 225, and the grooves are V-shaped grooves that can accommodate the structural glue 230.
- the circle formed by the bottom of the positioning block 225 is slightly larger than the diameter of the bottom of the battery core 10, and the diameter difference between the two ranges from 0.1 to 0.4 mm.
- it can be 0.1 mm, 0.2mm, 0.3mm or 0.4mm, etc.
- the bottom of the positioning part can also be in contact with the bottom of the battery core 10 to lock the battery core 10 into the positioning part.
- a plurality of convex ribs 223 are provided on the bracket 220 .
- the convex ribs 223 are arranged toward the tray 210 , which can increase the contact area between the structural adhesive 230 and the bracket 220 , thereby increasing the firmness of the bonding.
- the protruding rib 223 is in the shape of an annular ring.
- the protruding rib 223 is arranged on the outer periphery of the placement portion 226 and is concentric with the through hole 221.
- the protruding rib 223 can also be square, circular, or arc-shaped. Protrusions in the shape of 230 or other shapes, as long as they are in a structural form that can increase the bonding area between the structural adhesive 230 and the bracket 220, are within the protection scope of this application.
- a plurality of annular ribs 224 are provided at the bottom of the placement portion 226 .
- the annular ribs 224 are in contact with the tray 210 . Both ends of the annular ribs 224 are connected to the through holes 221 and the pressure relief holes 211 respectively.
- the ring rib 224 plays a supporting role between the bracket 220 and the tray 210.
- the ring rib 224 is provided on the inner ring of the placement part 226, so that there is a gap between adjacent ring ribs 224, and the ring rib 224 has a certain height.
- the pressure relief hole 211 and the through hole 221 are connected.
- the The high-temperature gas generated by the battery core 10 can quickly pass through the through hole 221 and overflow from the pressure relief hole 211 along the ring rib 224, effectively preventing the high-temperature gas from spreading to the bottom of other battery cores 10 and increasing the risk of thermal runaway of other battery cores 10.
- the battery module 200 also includes a fixing frame 240.
- the fixing frame 240 is arranged on the top of the battery cell 10.
- the fixing frame 240 is provided with a plurality of positioning protrusions 241, and the positioning protrusions 241 extend into the adjacent battery cells 10. It is disposed in the gap and in contact with the side surface of the battery core 10 .
- the positioning protrusions 241 are inserted into the gaps between adjacent battery cores 10 when the fixing bracket 240 and the battery cores 10 are assembled.
- the shape of the positioning protrusion 241 is set according to the gap between adjacent battery cells 10, so that the positioning protrusion 241 can contact the side of the battery core 10, play a role in limiting the position of the battery core 10, and prevent the battery core 10 from causing a short circuit due to contact. .
- the battery module 200 also includes a bus bar 250.
- the fixing frame 240 is also provided with a mounting hole.
- the bus bar 250 is embedded in the mounting hole.
- the bus bar 250 is in contact with the battery cells 10 and connects multiple battery cells. 10 electrical connections.
- the bus bar 250 is embedded in the installation hole, which can increase the stability of the connection between the bus bar 250 and the battery core 10 .
- the bus bar 250 includes a positive electrode connection part 251 and a negative electrode connection part 252.
- the mounting holes include a positive electrode mounting hole 242 and a negative electrode mounting hole 243.
- the positive electrode connecting part 251 is electrically connected to the positive electrode of the battery core 10 through the positive electrode mounting hole 242.
- the negative electrode connecting portion 252 is electrically connected to the negative electrode of the battery core 10 through the negative electrode mounting hole 243 .
- the bus bar 250 includes a plurality of bus bar units, each bus bar unit includes a positive electrode connection part 251 and a negative electrode connection part 252, and the bus bar units are connected through a base material 253.
- the bus bar 250 is provided with a positioning hole
- the fixing frame 240 is provided with a positioning post 244.
- the positioning post 244 is passed through the positioning hole, thereby positioning the bus bar 250 and preventing the occurrence of an accident between the bus bar 250 and the battery core 10. dislocation.
- each busbar unit is provided with a positioning hole.
- the positioning hole is provided between the positive electrode connecting part 251 and the negative electrode connecting part 252.
- the positioning post 244 is provided between the positive electrode mounting hole 242 and the negative electrode mounting hole 243. between. It can be understood that the positions and shapes of the positioning holes and the positioning posts 244 should be coordinated.
- the positioning post 244 may also be provided on the base material 253 or the positive electrode connecting part 251 or the negative electrode connecting part 252.
- the battery module 200 further includes a thermally conductive adhesive 260 , which is disposed on the end surfaces of the fixing bracket 240 and the busbar 250 and can bond the fixing bracket 240 and the busbar 250 .
- the thermal conductive adhesive 260 is configured to transfer the heat of the bus 250 to a lower temperature part, thereby preventing the local temperature inside the battery from being too high, causing thermal runaway of the battery core 10 and other safety issues. Hidden danger.
- the provision of thermally conductive adhesive 260 can bond the bus bar 250 and the bracket 220, thereby increasing the rigidity and stability of the structure.
- the fixing frame 240 is provided with a mounting slot, the bus bar 250 is set in the mounting slot, the mounting hole is set at the bottom of the mounting slot, and the sides of the bus bar 250, the bottom of the mounting slot and the side walls of the mounting slot form a glue storage slot 261 , the glue storage tank 261 can be used to accommodate the thermally conductive glue 260 .
- the cross-sectional area of the installation groove is larger than the cross-sectional area of the bus bar 250. Therefore, after the bus bar 250 is placed in the fixing frame 240, there is a gap around the bus bar 250. This gap is the glue storage groove 261.
- This structural arrangement can accommodate more thermally conductive adhesive 260, thereby enhancing the effect of heat transfer and the stability of the connection between components.
- the height of the installation groove is greater than the thickness of the bus bar 250, so the thermally conductive adhesive 260 can fill the surface of the busbar 250, and the busbar 250 is covered under the thermally conductive adhesive 260, which can also improve the heat transfer effect and increase the space between components.
- the solidity of the connection is greater than the thickness of the bus bar 250, so the thermally conductive adhesive 260 can fill the surface of the busbar 250, and the busbar 250 is covered under the thermally conductive adhesive 260, which can also improve the heat transfer effect and increase the space between components.
- the solidity of the connection is provided.
- the fixing bracket 240 is provided with a glue hole 245 , the glue hole 245 is located at the top of the battery core 10 , and the thermally conductive glue 260 can be filled in the glue hole 245 and contact the top of the battery core 10 .
- the arrangement of the glue holes 245 can make the thermal conductive glue 260 directly contact with part of the surface of the top of the battery core 10, and can directly transfer the heat generated by the battery core 10, quickly reducing the heat of the battery core 10, thereby ensuring the safety of the battery core 10.
- the shape of the glue hole 245 can be set according to the shape of the bus bar 250. Its area should be large enough, but at the same time, it should ensure that the bracket 220 has sufficient structural strength.
- the glue hole 245 may also be a round hole, a square hole, a waist-shaped hole, etc.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Battery Mounting, Suspending (AREA)
Abstract
本申请公开了一种电池包。该电池包包括多个电芯,该电池包还包括箱体和多个电池模组。箱体的内部设置有支撑梁,支撑梁将箱体的内部分隔成多个隔仓,支撑梁的底部和箱体的内底面之间具有连通通道,连通通道将相邻两个隔仓连通。电池模组设置在隔仓内。
Description
本申请要求在2022年06月17日提交中国专利局、申请号为202221526034.0的中国专利申请的优先权,要求在2022年06月17日提交中国专利局、申请号为202210691718.4的中国专利申请的优先权,以上申请的全部内容通过引用结合在本申请中。
本申请涉及电池技术领域,例如涉及一种电池包。
随着高科技工业的持续发展,动力电池的应用越来越广泛。动力电池的安全性能是用户关注的重要问题之一。对于锂离子电池,电芯热失控是最严重的安全事故,热失控产生的原因有很多,例如,电池内部缺陷导致短路或电池外部短路造成电池内热量积累过快等。
热失控后产生的高温气体若不能及时排出,则容易引起电池失火甚至是***等危险。因此,如何避免电芯热失控产生的高温气体造成电池失火或***是电池结构设计中需要考虑的重点问题。相关技术中,通常采用在箱体的底部设置导向通道并在箱体的侧壁设置泄压阀的方式进行泄压,高温气体能够沿导向通道流向泄压阀,但由于导向通道限制了高温气体的扩散范围,在泄压通道中累积的高温气体容易使箱体内局部温度过高,泄压降温的效果较差。
发明内容
本申请提供一种电池包,该电池包中的电芯发生热失控时,高温气体能够及时分散,因而具有更高的安全性能。
本申请实施例提供了一种电池包,包括多个电芯,所述电池包还包括:
箱体,所述箱体的内部设置有支撑梁,所述支撑梁将所述箱体的内部分隔成多个隔仓,所述支撑梁的底部与所述箱体的内底面之间具有连通通道,所述连通通道将相邻两个所述隔仓连通;
至少两个电池模组,所述电池模组设置在所述隔仓内。
在一实施例中,所述箱体的内底面上设置有垫块,所述支撑梁设置在所述 垫块上,以形成所述连通通道。
在一实施例中,所述箱体的侧壁上设置有泄压口。
在一实施例中,所述箱体的外侧壁上设置有边梁,所述边梁具有两端贯通的泄压通道,所述泄压口与所述泄压通道连通,所述电芯热失控产生的高温气体能够依次通过所述隔仓、所述泄压口和所述泄压通道排出到所述箱体的外部。
在一实施例中,所述箱体内设置有电气腔室,所述电池包还包括维修上盖,所述维修上盖盖设在所述电气腔室上并与所述箱体连接。
在一实施例中,所述电池模组包括托盘,所述电芯设置在所述托盘上,所述托盘的底部设置有泄压孔,所述电芯热失控产生的高温气体能够通过所述泄压孔排出到所述隔仓内。
在一实施例中,所述托盘上设置有支架,所述电芯放置在所述支架上,所述支架上开设有多个通孔,所述电芯热失控产生的高温气体能够依次通过所述通孔和所述泄压孔排出到所述隔仓内。
在一实施例中,所述电池模组还包括结构胶,所述支架上设置有溢胶孔,所述溢胶孔正对相邻所述电芯之间的间隙设置,所述托盘与所述支架之间具有注胶空间,所述结构胶能够填充于所述间隙、所述溢胶孔以及所述注胶空间。
在一实施例中,所述支架上设置有多个凸棱,所述凸棱朝向所述托盘设置,所述凸棱用于增加所述结构胶与所述支架的接触面积。
在一实施例中,所述支架上设置有多个定位部,所述支架的底面具有多个放置部,所述定位部与所述放置部形成定位槽,所述通孔设置在所述放置部的底部,所述电芯设置在所述定位槽中。
在一实施例中,所述放置部的底部设置有多个环肋,所述环肋与所述托盘接触设置,所述环肋的两端分别和所述通孔以及所述泄压孔连通。
在一实施例中,所述定位部包括多个定位块,多个所述定位块沿所述放置部的外周间隔设置。
在一实施例中,所述定位块的侧面设置有沟槽。
在一实施例中,所述定位块顶部的厚度小于底部的厚度。
在一实施例中,所述电池模组还包括固定架,所述固定架设置在所述电芯 的顶部,所述固定架上设置有多个定位凸起,所述定位凸起伸入相邻两个所述电芯的间隙之中并与所述电芯的侧面接触设置。
在一实施例中,所述电池模组还包括汇流排,所述固定架上还设置有安装孔,所述汇流排嵌入所述安装孔中,所述汇流排与所述电芯接触设置并将多个所述电芯电连接。
在一实施例中,所述汇流排包括正极连接部和负极连接部,所述安装孔包括正极安装孔和负极安装孔,所述正极连接部通过所述正极安装孔和所述电芯的正极电连接,所述负极连接部通过所述负极安装孔和所述电芯的负极电连接。
在一实施例中,所述汇流排上设置有定位孔,所述固定架上设置有定位柱,所述定位柱穿设于所述定位孔。
在一实施例中,所述电池模组还包括导热胶,所述导热胶设置在所述固定架和所述汇流排的端面,能够将所述固定架和所述汇流排粘接。
在一实施例中,所述固定架上设置有安装槽,所述汇流排设置在所述安装槽内,所述安装孔设置在所述安装槽的槽底,所述汇流排的侧边与所述安装槽的槽底及所述安装槽的侧壁形成储胶槽,所述储胶槽能够容纳所述导热胶。
在一实施例中,所述固定架上设置有过胶孔,所述过胶孔位于所述电芯的顶端,所述导热胶能够填充于所述过胶孔并与所述电芯的顶端接触。
本申请的有益效果:
本申请提供的电池包通过设置支撑梁将箱体的内部分隔成多个隔仓,隔仓内用于放置电池模组,由于支撑梁的底部和箱体的内底面之间具有连通通道,因而,相邻的隔仓之间互相连通。当一个电池模组中的电芯发生热失控时,其产生的高温气体能够通过连通通道向其他隔仓扩散,从而避免热量集中,起到降温的作用,有效避免电池包发生***等危险,提高了电池包的安全性能。
图1是本申请实施例提供的箱体的结构示意图一;
图2是本申请实施例提供的箱体的结构示意图二;
图3是本申请实施例提供的电池包的***图;
图4是本申请实施例提供的电池模组的***图;
图5是本申请实施例提供的支架的结构示意图一;
图6是本申请实施例提供的支架的结构示意图二;
图7是本申请实施例提供的固定架的结构示意图;
图8是本申请实施例提供的汇流排和固定架的装配示意图。
图中:
10、电芯;100、箱体;110、支撑梁;120、侧梁;130、垫块;140、泄压口;150、边梁;151、泄压通道;160、维修上盖;170、液冷上盖;171、冷却液通道;180、密封条;190、压条;200、电池模组;210、托盘;211、泄压孔;220、支架;221、通孔;222、溢胶孔;223、凸棱;224、环肋;225、定位块;226、放置部;230、结构胶;240、固定架;241、定位凸起;242、正极安装孔;243、负极安装孔;244、定位柱;245、过胶孔;250、汇流排;251、正极连接部;252、负极连接部;253、基材;260、导热胶;261、储胶槽。
下面将结合附图对本申请进行清楚、完整地描述,所描述的实施例是本申请一部分实施例,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。
在本申请的描述中,需要说明的是,术语“中心”、“上”、“下”、“左”、“右”、“竖直”、“水平”、“内”、“外”等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。此外,术语“第一”、“第二”、仅用于描述目的,而不能理解为指示或暗示相对重要性。其中,术语“第一位置”和“第二位置”为两个不同的位置,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,需要说明的是,除非另有明确的规定,术语“安装”、“相连”、“连接”应做广义理解,例如,可以是固定连接,也可以是可拆卸连接,或一体地连接;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。对于本领域的普通技术人员而言,可以实际情况理解上述术语在本申请中的含义。
下面详细描述本申请的实施例,所述实施例的示例在附图中示出,其中自始至终相同或类似的标号表示相同或类似的元件或具有相同或类似功能的元件。下面通过参考附图描述的实施例是示例性的,仅用于解释本申请。
参见图1,本实施例提供一种电池包,包括多个电芯10,该电池包还包括箱体100和多个电池模组200。箱体100的内部设置有支撑梁110,支撑梁110将箱体100的内部分隔成多个隔仓,支撑梁110的底部和箱体100的内底面之间具有连通通道,连通通道将相邻两个隔仓连通。电池模组200设置在隔仓内。
上述电池包通过设置支撑梁110将箱体100的内部分隔成多个隔仓,隔仓内用于放置电池模组200,由于支撑梁110的底部和箱体100的内底面之间具有连通通道,因而,相邻的隔仓之间互相连通。当一个电池模组200中的电芯10发生热失控时,发生热失控的电芯产生的高温气体能够通过连通通道向其他隔仓扩散,从而避免热量集中,起到降温的作用,有效避免电池包发生***等危险,提高了电池包的安全性能。
参见图1,在本实施例中,支撑梁110呈十字型,将箱体100的内部分隔成四个隔仓,可以放置四个电池模组200。在箱体100内部的四周还设置有侧梁120,侧梁120端面和支撑梁110端面平齐,从而侧梁120和支撑梁110能够对电池模组200起到支撑作用。支撑梁110包括横梁和纵梁,横梁沿箱体100宽度方向的中轴线设置,纵梁沿箱体100长度方向的中轴线设置,其中,纵梁的中间断开,并和横梁进行连接。
参见图2,箱体100的内底面上设置有垫块130,支撑梁110设置在垫块130上。可以理解地,垫块130的设置使支撑梁110和箱体100的内底面之间存在间隔,从而形成了连通通道,将相邻的隔仓之间进行连通。在本实施例中,垫块130设置有多个,多个垫块130间隔设置,垫块130的数量和位置根据支撑梁110的设置进行选择即可。在其他实施例中,也可以在支撑梁110上开设连通孔221将相邻隔仓进行连通。可选地,支撑梁110和垫块130之间采用焊接的方式进行连接,当然也采用粘接或连接方式。可选地,箱体100的底板和侧壁之间采用满焊的方式进行连接,保证结构强度。
示例性地,箱体100的侧壁上设置有泄压口140,用于泄放高温气体。示例性地,箱体100的外侧壁上还可以设置边梁150,边梁150具有两端贯通的泄压通道151,泄压口140和泄压通道151连通,因此,电芯10热失控产生的高温气体能够依次通过隔仓、泄压口140和泄压通道151排出到箱体100的外部。在本实施例中,边梁150位于箱体100长度方向的外侧壁上,由于边梁150长度较长,高温气体流经泄压通道151,温度降低,进而降低了电池包***或起火的风险。
参见图3,箱体100的内部设置有电气腔室,电池包还包括维修上盖160,维修上盖160盖设在电气腔室上,并和箱体100连接。为保证电气腔室的密封性,可以在维修上盖160和箱体100之间设置密封条180。在电池包使用过程中,电气元件相较于电池模组200更容易出现问题,因此,电气腔室单独采用维修上盖160进行封盖,在电气元件发生故障时,只拆卸维修上盖160即可,维修方便,较少操作成本。电池包还包括液冷上盖170,液冷上盖170盖设在隔仓上,并和箱体100连接。液冷上盖170能够将电池模组200封盖在隔仓中。可选地,可以通过设置压条190增加连接强度。可选地,液冷上盖170上设置有冷却液通道171,冷却液通道171中设置有冷却液,能够对电池模组200起到降温的作用。采用这种结构设置,将相关电池结构中的液冷板和箱盖集成于一体,减少了零部件的数量,降低整体成本,并且能够提高装配效率,整体结构更加紧凑。
示例性地,参见图4,电池模组200包括托盘210,电芯10设置在托盘210上,托盘210的底部设置有泄压孔211,电芯10热失控产生的高温气体能够通过泄压孔211排出到隔仓内。托盘210的材质为金属,具有足够的结构强度。托盘210主要包括底板和与底板垂直连接的侧板,泄压孔211设置在底板上,泄压孔211的位置根据电芯10的排列方式进行设置,保证两者正对设置,从而能够使高温气体迅速排出。示例性地,侧板的边缘连接有翻边,在进行电池模组200和箱体100的装配时,翻边搭设在支撑梁110或侧梁120上,可采用螺丝将翻边锁附于箱体100。
示例性地,托盘210上设置有支架220,电池放置在支架220上,支架220上设置有多个通孔221,电芯10热失控产生的高温气体能够依次通过通孔221和泄压孔211排出到隔仓内。在本实施例中,通孔221和泄压孔211一一对应地相对设置,通孔221和电芯10一一对应地相对设置。支架220采用塑料或其他绝缘性较好的材料,能够将电芯10和托盘210绝缘隔离,防止两者接触短路。
电池模组200还包括结构胶230,支架220上设置有溢胶孔222,溢胶孔222正对相邻电芯10之间的间隙设置,托盘210与支架220之间具有注胶空间,结构胶230能够填充于间隙、溢胶孔222以及注胶空间,从而将电芯10、支架220以及托盘210粘接在一起。结构胶230除了能够起到固定连接的作用外,还能够起到绝缘作用,防止相邻的电芯10相接触造成短路。
参见图4和图5,示例性地,支架220上设置有定位部,支架220的底面具有多个放置部226,定位部和放置部226形成定位槽,通孔221设置在放置部226的底部,电芯10设置在定位槽中。在本实施例中,由于电芯10为圆柱型,通孔221为圆形,因此,放置部226呈环形,定位部设置在放置部226的外周。多个放置部226拼接后,其相切处连接在一起,未连接的部分形成上述的溢胶 孔222。在本实施例中,溢胶孔222根据电芯10之间的间隙的形状大致呈三角形,通孔221根据电芯10的形状设置为圆形,在其他实施例中,溢胶孔222和通孔221的形状可以根据实际情况确定。
示例性地,定位部包括多个定位块225,多个定位块225间隔设置。定位块225的两面均为弧形面,两个弧形面分别朝向两个不同的电芯10设置。在其他实施例中,定位部也可以为设置在放置部226外周并向电芯10顶部延伸的筒状结构,或为沿定位部外周设置的多个弧形板状结构等,只要是能够对电芯10起到定位作用的结构形式均在本申请的保护范围之内。
示例性地,定位块225设置在相邻放置部226的连接处。在本实施例中,对于支架220中部的放置部226而言,每个放置部226的周围连接有六个放置部226,因此,在放置部226的外周设置有六个定位块225。在其他实施例中,定位块225的数量可以为三个、五个或其他数量,定位块225的位置可以根据实际电芯10的排布方式进行设置即可。
可选地,定位块225顶部的厚度小于底部的厚度,并且顶部的宽度小于底部的宽度。对于需要在电芯10底部填充结构胶230的电池模组200结构而言,定位块225采用此种上薄下厚,且上窄下宽的结构,能够增加结构胶230和定位块225之间以及结构胶230和电芯10之间的接触面积,使粘结更加牢固,电芯10和支架220不易松动,而且能够使支架220脱模更加方便,减少制造困难。可选地,可以在定位块225的侧面设置沟槽,该沟槽能够容纳结构胶230,本实施例中在定位块225的两个侧面均设置有沟槽,沟槽为V型槽,能够增加爬电距离,保证电气安全,并且增加胶粘面积,增加成组强度。为了增加胶粘面积,本实施例中,定位块225底部所围成的圆形比电芯10底部的直径稍大,两者直径差的范围在0.1~0.4mm,示例性地,可以为0.1mm、0.2mm、0.3mm或0.4mm等。在其他实施例中,定位部的底部也可以和电芯10的底部接触设置,以将电芯10卡入定位部中。
参见图6,在支架220上设置有多个凸棱223,凸棱223朝向托盘210设置,能够增加结构胶230和支架220的接触面积,从而增加粘接的牢固性。在本实施例中,凸棱223为圆环状,凸棱223设置在放置部226的外周,和通孔221同心设置,在其他实施例中,凸棱223也可以为方形、圆形、弧形或其他形状的凸起,只要是能够增加结构胶230和支架220的粘接面积的结构形式,都在本申请的保护范围之内。
继续参见图6,放置部226的底部设置有多个环肋224,环肋224和托盘210接触设置,环肋224的两端分别和通孔221以及泄压孔211连通。环肋224在支架220和托盘210之间起到支撑作用,可选地,环肋224设置在放置部226 的内圈,从而相邻环肋224之间存在间隔,且环肋224具有一定高度,因而能够使支架220和托盘210之间形成注胶空间,结构胶230可以填充于注胶空间中,同时,将泄压孔211和通孔221连通,当一个电芯10热失控时,该电芯10产生的高温气体能够迅速地通过通孔221并沿环肋224从泄压孔211溢出,有效防止高温气体蔓延到其他电芯10的底部,增加其他电芯10的热失控风险。
参见图7,电池模组200还包括固定架240,固定架240设置在电芯10的顶部,固定架240上设置有多个定位凸起241,定位凸起241伸入相邻电芯10的间隙之中并与电芯10的侧面接触设置。通过在固定架240的一侧设置多个定位凸起241,在进行固定架240和电芯10的装配时,定位凸起241***相邻电芯10之间的间隙中。定位凸起241的形状根据相邻电芯10之间的间隙设置,从而定位凸起241能够和电芯10的侧面相接触,起到限定电芯10位置的作用,防止电芯10接触造成短路。
参见图7和图8,电池模组200还包括汇流排250,固定架240上还设置有安装孔,汇流排250嵌入安装孔中,汇流排250与电芯10接触设置并将多个电芯10电连接。汇流排250嵌入安装孔,能够增加汇流排250和电芯10连接的稳定性。
继续参见图8,汇流排250包括正极连接部251和负极连接部252,安装孔包括正极安装孔242和负极安装孔243,正极连接部251通过正极安装孔242和电芯10的正极电连接,负极连接部252通过负极安装孔243和电芯10的负极电连接。可选地,汇流排250包括多个汇流排单体,每个汇流排单体包括正极连接部251和负极连接部252,汇流排单体之间通过基材253进行连接。将正极安装孔242和负极安装孔243分别设置,相较于将正极安装孔242和负极安装孔243连通呈一体,能够提高电芯10连接的可靠性,有效避免因汇流排250错位或与电芯10接触不良导致的电芯10短路,同时,能够增加固定架240的结构强度。
汇流排250上设置有定位孔,固定架240上设置有定位柱244,定位柱244穿设于定位孔,从而对汇流排250起到定位的作用,防止汇流排250和电芯10之间发生错位。在本实施例中,每个汇流排单体上均设置有定位孔,定位孔设置在正极连接部251和负极连接部252之间,定位柱244设置在正极安装孔242和负极安装孔243之间。可以理解地,定位孔和定位柱244的位置及形状应当配合设置。在其他实施例中,定位柱244也可以设置在基材253或正极连接部251或负极连接部252上。
示例性地,电池模组200还包括导热胶260,导热胶260设置在固定架240和汇流排250的端面,能够将固定架240和汇流排250粘结。电池在充放电过 程中,汇流排250局部发热严重,导热胶260的设置能够将汇流排250的热量传递至温度较低的部位,避免电池内部局部温度过高,造成电芯10热失控等安全隐患。另外,导热胶260的设置能够将汇流排250和支架220进行粘结,增加了结构的刚度和稳定性。
固定架240上设置有安装槽,汇流排250设置在安装槽内,安装孔设置在安装槽的槽底,汇流排250的侧面与安装槽的槽底以及安装槽的侧壁形成储胶槽261,储胶槽261能够用于容纳导热胶260。可以理解地,安装槽的横截面面积大于汇流排250的横截面面积,因此汇流排250放入固定架240之后,汇流排250的周围存在一圈缝隙,该缝隙即为储胶槽261,采用这种结构设置,能够容纳更多的导热胶260,增强热量传递的效果和部件之间连接的稳定性。可选地,安装槽的高度大于汇流排250的厚度,因此导热胶260可以充满汇流排250的表面,将汇流排250覆盖在导热胶260之下,同样能够提高热量传递的效果和增加部件间连接的牢固性。
示例性地,固定架240上设置有过胶孔245,过胶孔245位于在电芯10的顶端,导热胶260能够填充于过胶孔245并与电芯10的顶端接触。过胶孔245的设置能够使导热胶260和电芯10顶端的部分表面直接接触,能够直接对电芯10产生的热量进行传递,快速降低电芯10热量,从而保证电芯10的安全。在本实施例中,过胶孔245的形状可以根据汇流排250的形状进行设置,其面积应当足够大,但同时应当保证支架220具有足够的结构强度。在其他实施例中,过胶孔245也可以为圆孔,方孔或腰型孔等。
Claims (21)
- 一种电池包,包括多个电芯(10),所述电池包还包括:箱体(100),所述箱体(100)的内部设置有支撑梁(110),所述支撑梁(110)将所述箱体(100)的内部分隔成多个隔仓,所述支撑梁(110)的底部与所述箱体(100)的内底面之间具有连通通道,所述连通通道将相邻两个所述隔仓连通;至少两个电池模组(200),所述电池模组(200)设置在所述隔仓内。
- 根据权利要求1所述的电池包,其中,所述箱体(100)的内底面上设置有垫块(130),所述支撑梁(110)设置在所述垫块(130)上,以形成所述连通通道。
- 根据权利要求1所述的电池包,其中,所述箱体(100)的侧壁上设置有泄压口(140)。
- 根据权利要求3所述的电池包,其中,所述箱体(100)的外侧壁上设置有边梁(150),所述边梁(150)具有两端贯通的泄压通道(151),所述泄压口(140)与所述泄压通道(151)连通,所述电芯(10)热失控产生的高温气体能够依次通过所述隔仓、所述泄压口(140)和所述泄压通道(151)排出到所述箱体(100)的外部。
- 根据权利要求1所述的电池包,其中,所述箱体(100)内设置有电气腔室,所述电池包还包括维修上盖(160),所述维修上盖(160)盖设在所述电气腔室上并与所述箱体(100)连接。
- 根据权利要求1-5任一项所述的电池包,其中,所述电池模组(200)包括托盘(210),所述电芯(10)设置在所述托盘(210)上,所述托盘(210)的底部设置有泄压孔(211),所述电芯(10)热失控产生的高温气体能够通过所述泄压孔(211)排出到所述隔仓内。
- 根据权利要求6所述的电池包,其中,所述托盘(210)上设置有支架(220),所述电芯(10)放置在所述支架(220)上,所述支架(220)上开设有多个通孔(221),所述电芯(10)热失控产生的高温气体能够依次通过所述通孔(221)和所述泄压孔(211)排出到所述隔仓内。
- 根据权利要求7所述的电池包,其中,所述电池模组(200)还包括结构胶(230),所述支架(220)上设置有溢胶孔(222),所述溢胶孔(222)正对相邻所述电芯(10)之间的间隙设置,所述托盘(210)与所述支架(220)之间具有注胶空间,所述结构胶(230)能够填充于所述间隙、所述溢胶孔(222)以及所述注胶空间。
- 根据权利要求8所述的电池包,其中,所述支架(220)上设置有多个凸棱(223),所述凸棱(223)朝向所述托盘(210)设置,所述凸棱(223)用于增加所述结构胶(230)与所述支架(220)的接触面积。
- 根据权利要求7-9任一项所述的电池包,其中,所述支架(220)上设置 有多个定位部,所述支架(220)的底面具有多个放置部(226),所述定位部与所述放置部(226)形成定位槽,所述通孔(221)设置在所述放置部(226)的底部,所述电芯(10)设置在所述定位槽中。
- 根据权利要求10所述的电池包,其中,所述放置部(226)的底部设置有多个环肋(224),所述环肋(224)与所述托盘(210)接触设置,所述环肋(224)的两端分别和所述通孔(221)以及所述泄压孔(211)连通。
- 根据权利要求11所述的电池包,其中,所述定位部包括多个定位块(225),多个所述定位块(225)沿所述放置部(226)的外周间隔设置。
- 根据权利要求12所述的电池包,其中,所述定位块(225)的侧面设置有沟槽。
- 根据权利要求12或13所述的电池包,其中,所述定位块(225)顶部的厚度小于底部的厚度。
- 根据权利要求1所述的电池包,其中,所述电池模组(200)还包括固定架(240),所述固定架(240)设置在所述电芯(10)的顶部,所述固定架(240)上设置有多个定位凸起(241),所述定位凸起(241)伸入相邻两个所述电芯(10)的间隙之中并与所述电芯(10)的侧面接触设置。
- 根据权利要求15所述的电池包,其中,所述电池模组(200)还包括汇流排(250),所述固定架(240)上还设置有安装孔,所述汇流排(250)嵌入所述安装孔中,所述汇流排(250)与所述电芯(10)接触设置并将多个所述电芯(10)电连接。
- 根据权利要求16所述的电池包,其中,所述汇流排(250)包括正极连接部(251)和负极连接部(252),所述安装孔包括正极安装孔(242)和负极安装孔(243),所述正极连接部(251)通过所述正极安装孔(242)和所述电芯(10)的正极电连接,所述负极连接部(252)通过所述负极安装孔(243)和所述电芯(10)的负极电连接。
- 根据权利要求16或17所述的电池包,其中,所述汇流排(250)上设置有定位孔,所述固定架(240)上设置有定位柱(244),所述定位柱(244)穿设于所述定位孔。
- 根据权利要求16或17所述的电池包,其中,所述电池模组(200)还包括导热胶(260),所述导热胶(260)设置在所述固定架(240)和所述汇流排(250)的端面,能够将所述固定架(240)和所述汇流排(250)粘接。
- 根据权利要求19所述的电池包,其中,所述固定架(240)上设置有安装槽,所述汇流排(250)设置在所述安装槽内,所述安装孔设置在所述安装槽的槽底,所述汇流排(250)的侧边与所述安装槽的槽底及所述安装槽的侧壁形成储胶 槽(261),所述储胶槽(261)能够容纳所述导热胶(260)。
- 根据权利要求19所述的电池包,其中,所述固定架(240)上设置有过胶孔(245),所述过胶孔(245)位于所述电芯(10)的顶端,所述导热胶(260)能够填充于所述过胶孔(245)并与所述电芯(10)的顶端接触。
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