CN115312938A - Power battery structure and vehicle - Google Patents
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- CN115312938A CN115312938A CN202211065451.4A CN202211065451A CN115312938A CN 115312938 A CN115312938 A CN 115312938A CN 202211065451 A CN202211065451 A CN 202211065451A CN 115312938 A CN115312938 A CN 115312938A
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- 239000000498 cooling water Substances 0.000 claims description 11
- 239000011324 bead Substances 0.000 claims description 6
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- 230000009286 beneficial effect Effects 0.000 description 2
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- 238000005516 engineering process Methods 0.000 description 2
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
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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
- H01M50/233—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
- H01M50/242—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 against vibrations, collision impact or swelling
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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
- H01M50/204—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
- H01M50/209—Racks, modules or packs for multiple batteries or multiple cells characterised by their shape adapted for prismatic or rectangular cells
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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
- H01M50/244—Secondary casings; Racks; Suspension devices; Carrying devices; Holders characterised by their mounting method
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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
- H01M50/249—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
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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
The utility model provides a power battery structure and vehicle relates to power battery technical field. The power battery structure includes: the floor frame assembly and the electric core assembly; the floor frame assembly comprises a battery compartment, an auxiliary beam and a bearing plate; the battery core assembly is positioned in the battery cabin; the auxiliary beam is longitudinally arranged in the middle of the battery compartment, and two ends of the auxiliary beam are respectively connected with the inner wall of the battery compartment; prevent that the loading board is located the top of electric core subassembly, prevent that the edge of loading board is connected with the inner wall and the auxiliary beam in battery compartment respectively, prevent that the loading board is honeycomb structure, prevent that the loading board is used for preventing that electric core subassembly from bearing vertical load. This disclosed power battery structure, electric core subassembly's top has honeycombed and prevents the loading board, plays vertical bearing function, and the lateral anti impact deformation ability of reinforcing floor frame subassembly to be favorable to protecting electric core subassembly, improve electric core subassembly's safety in utilization and life.
Description
Technical Field
The disclosure relates to the technical field of power batteries, in particular to a power battery structure and a vehicle.
Background
With the vigorous advocation of energy conservation and emission reduction, electric vehicles are continuously developed, the battery technology as the main component of the electric vehicles is also rapidly advanced, in order To increase the endurance capacity of the vehicles, batteries are developed from small modules To CTP (Cel 1 To Pack, high-integration power battery) To CTC (Cell To sessions, battery integration), higher-degree integration is realized, and the CTC power battery gradually becomes a hot door for battery installation at present.
The CTC power battery is characterized in that a battery cell and a vehicle body are integrated, namely the battery cell is integrated in a floor frame of an automobile, and in order to realize larger endurance mileage and reduce charging frequency, more electric quantity is arranged in a limited space as far as possible.
However, the cells in the CTC power batteries in the related art need to bear loads, which causes deterioration of the use environment of the cells and increases the risk of cell damage.
Disclosure of Invention
The utility model provides a power battery structure and vehicle can solve among the CTC power battery electric core and need bear load, leads to the worsening of electric core service environment, has increased the problem of the risk that electric core damaged.
The technical scheme is as follows:
in one aspect, a power battery structure is provided, which includes: the floor frame assembly and the electric core assembly;
the floor frame assembly comprises a battery compartment, an auxiliary beam and a bearing plate;
the electric core assembly is positioned in the battery cabin;
the auxiliary beam is longitudinally arranged in the middle of the battery compartment, and two ends of the auxiliary beam are respectively connected with the inner wall of the battery compartment;
the anti-loading plate is located above the cell assembly, the edge of the anti-loading plate is respectively connected with the inner wall of the battery cabin and the auxiliary beam, the anti-loading plate is of a honeycomb-shaped structure, and the anti-loading plate is used for preventing the cell assembly from bearing vertical load.
In some embodiments, the battery compartment comprises two transverse frame beams, two longitudinal frame beams, a floor, and a floor;
the two transverse frame beams and the two longitudinal frame beams are respectively arranged in the transverse direction or the longitudinal direction and then are sequentially connected, the bottom plate is positioned on one side of the battery compartment, which faces the ground, and the bottom plate is respectively connected with the two transverse frame beams and the two longitudinal frame beams; the floor is positioned on one side, away from the bottom surface, of the battery cabin, and the floor is connected with the two transverse frame beams and the two longitudinal frame beams respectively;
the auxiliary beam is arranged in parallel with the two longitudinal frame beams, and two ends of the auxiliary beam are connected with the two transverse frame beams respectively.
In some embodiments, the battery cell assembly includes a first battery cell and a second battery cell, and the load-resistant plate includes a first plate and a second plate;
the first battery cell and the second battery cell are symmetrically arranged in the battery compartment along the auxiliary beam, the first plate body is located above the first battery cell, and the second plate body is located above the second battery cell.
In some embodiments, the lateral side of the transverse frame beam facing the inside of the battery compartment is provided with a first assembling step, the lateral side of the longitudinal frame beam facing the inside of the battery compartment is provided with a second assembling step, and the upper surface of the auxiliary beam is provided with a third assembling step;
the edge of the bearing plate is connected with the first assembling step, the second assembling step and the third assembling step respectively, and the bearing plate is supported above the cell assembly by the first assembling step, the second assembling step and the third assembling step.
In some embodiments, the first assembly step is protruded toward the inside of the battery compartment along the inner side surface of the transverse frame beam, and the top surface of the first assembly step is connected with the load-proof plate;
the second assembling step is protruded towards the inner part of the battery compartment along the inner side surface of the longitudinal frame beam, and the top surface of the second assembling step is connected with the bearing plate.
In some embodiments, the upper surface of the transverse frame beam is provided with a first rib structure, and the upper surface of the longitudinal frame beam is provided with a second rib structure;
the first convex rib structure is positioned on the outer side of the first assembling step, and the second convex rib structure is positioned on the outer side of the second assembling step;
the top surfaces of the first assembling step and the second assembling step are respectively connected with the lower surface of the bearing-proof plate, and the inner side surfaces of the first convex rib structure and the second convex rib structure are respectively connected with the outer side surface of the bearing-proof plate;
the upper surfaces of the first convex rib structure and the second convex rib structure are respectively connected with the lower surface of the floor.
In some embodiments, the height of the upper surfaces of the first and second rib structures is greater than the height of the upper surfaces of the transverse and longitudinal frame beams;
and/or the presence of a gas in the atmosphere,
the height of the upper surfaces of the first rib structure and the second rib structure is larger than the height of the top surfaces of the first assembly step and the second assembly step.
In some embodiments, the lower surface of the longitudinal frame beam is provided with an inward-recessed routing channel, and an opening of the routing channel is sealed by a cover plate; the lower surface of the longitudinal frame beam is also provided with a protective rib which protrudes to the lower part of the cover plate.
In some embodiments, a cooling water cavity and a collision buffer cavity are arranged in the bottom plate;
the cooling water cavity is positioned close to the battery compartment and used for containing and circulating cooling water; the collision buffer cavity is located at a position close to the bottom surface and used for providing collision buffer of the bottom for the electric core assembly.
In another aspect, a vehicle is provided that includes the power battery structure of the present disclosure.
The beneficial effect that technical scheme that this disclosure provided brought includes at least:
the utility model discloses a power battery structure, including floor frame subassembly and electric core subassembly, wherein the floor frame subassembly includes the battery compartment, the electric core subassembly is located this battery compartment, the middle part of battery compartment has auxiliary beam, the top of electric core subassembly has prevents the loading board, this prevent that the loading board is honeycomb type structure, can play vertical bearing function, it receives vertical load to avoid the electric core subassembly, can also strengthen the anti impact deformation ability of floor frame subassembly side direction, can effectively reduce the gravity of power battery structure again, thereby be favorable to protecting the electric core subassembly, the safety in utilization and the life of improvement electric core subassembly.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a power battery structure provided in an embodiment of the present disclosure;
fig. 2 is an exploded view of a power battery structure provided in an embodiment of the present disclosure;
FIG. 3 is a structural cross-sectional view of a power cell structure provided by an embodiment of the present disclosure;
FIG. 4 is an enlarged view of a portion of FIG. 3 at A;
FIG. 5 is an enlarged view of a portion of FIG. 3 at B;
fig. 6 is a partially enlarged view of fig. 3 at C.
The reference numerals in the figures are denoted respectively by:
1. a floor frame assembly;
11. a battery compartment; 12. an auxiliary beam; 13. a load-bearing prevention plate; 14. a battery coolant passage;
111. a transverse frame beam; 112. a longitudinal frame beam; 113. a base plate; 114. a floor;
1111. a first assembly step; 1112. a first rib structure; 1113. routing channels; 1114. a deck member; 1115. a protective rib;
1121. a second assembly step; 1122. a second rib structure;
121. a third assembly step;
131. a first plate body; 132. a second plate body;
1131. a cooling water cavity; 1132. a collision buffer chamber;
2. an electrical core assembly; 21. a first cell; 22. a second cell;
3. a wire harness.
Detailed Description
Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below do not represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
In the description of the present disclosure, it is to be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present disclosure, but are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are therefore not to be considered limiting of the present disclosure.
Unless defined otherwise, all technical terms used in the embodiments of the present disclosure have the same meaning as commonly understood by one of ordinary skill in the art.
In the prior art, a battery system and a vehicle body chassis system of an electric vehicle are separately arranged and connected to form a whole. The battery system is formed by assembling battery cores into modules, then assembling the battery packs with the vehicle body floor from the lower part. Advantages of this battery solution include: a. the battery pack consists of a plurality of modules, and each module is provided with an independent shell protection and control unit, so that the control and the heat management of the battery are facilitated; b. can change battery module alone, cost of maintenance and convenience are high.
The drawbacks of the above battery solutions are also evident: a. due to the shell and the safety clearance between the modules, the whole weight is higher, and the space utilization rate is lower; b. each module is provided with a separate control unit, which results in relatively high cost; c. after the battery system is connected with the vehicle body, the whole thickness size is large, the ground clearance of the chassis is influenced, and the risk of damaging the battery is increased in the future driving.
The CTC battery scheme is that a battery core is directly integrated on a vehicle body, so that the space utilization rate is improved to the maximum extent, namely more batteries can be arranged in the same space, the electric quantity of the batteries is improved, and the purpose of increasing the endurance mileage is achieved. The battery is further integrated by a CTP battery scheme, an upper plate and a lower plate of a floor are completely used for replacing a battery shell and a cover plate, and the upper plate and the lower plate are integrally designed with a vehicle body floor and a chassis, so that the installation form of the battery is fundamentally changed.
Advantages of CTC battery solutions include: a. the space utilization rate is greatly improved; b. the structural part of the battery pack is eliminated, so that the weight is reduced; c. a high degree of integration and modularity can be achieved.
However, CTC battery solutions also suffer from the following drawbacks: a. the battery cell needs to be used as a part of a structural member to bear load, and how to fix the battery cell with the upper and lower structural members needs to be considered so as to deal with the most severe shearing force; b. higher requirements are put on the process, if the manufacturing is unqualified, the whole battery is scrapped, and the maintainability is low; c. the battery system needs to be integrated with a vehicle body floor and a chassis in a high-standard design, and the outer frame structure of the battery is the structure of the vehicle body chassis, so that the design and processing difficulty is increased.
In the related technology, multiple cross beams are generally adopted in the internal structure of the power battery, the layout space of the battery cell is occupied, and the arrangement amount of the battery cell is influenced, so that the endurance mileage of an automobile is influenced, the battery cell needs to bear load, the use environment of the battery cell is deteriorated, and the risk of damage to the battery cell is increased; the battery core is sealed only by clamping the sealant on the upper contact plane and the lower contact plane; in addition, the water path and the low-voltage line of the front bin and the rear bin are interactive without determining the layout channel.
Therefore, this disclosure provides power battery structure, and the middle part of battery compartment has auxiliary beam, and electricity core subassembly's top has honeycombed shape and prevents the loading board, plays vertical bearing function, and the shock resistance deformability of reinforcing floor frame subassembly side direction to be favorable to protecting electricity core subassembly, improve electricity core subassembly's safety in utilization and life.
To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.
Fig. 1 is a schematic structural diagram of a power battery structure provided in an embodiment of the present disclosure; fig. 2 is an exploded view of a power battery structure provided in an embodiment of the present disclosure.
On one hand, as shown in fig. 1 and fig. 2, the present embodiment provides a power battery structure, which includes: the floor frame assembly 1, the electric core assembly 2 and the load-resisting plate 13.
The floor frame assembly 1 comprises a battery compartment 11, an auxiliary beam 12 and a bearing plate 13; the electric core assembly 2 is positioned in the battery cabin 11; the auxiliary beam 12 is longitudinally arranged in the middle of the battery compartment 11, and two ends of the auxiliary beam are respectively connected with the inner wall of the battery compartment 11; prevent that loading board 13 is located the top of electric core subassembly 2, prevent that the edge of loading board 13 is connected with the inner wall of battery compartment 11 and auxiliary beam 12 respectively, prevent that loading board 13 is honeycomb structure, prevent that loading board 13 is used for preventing that electric core subassembly 2 from bearing vertical load.
The power battery structure of this embodiment, including floor frame subassembly 1 and electric core subassembly 2, wherein floor frame subassembly 1 includes battery compartment 11, electric core subassembly 2 is located this battery compartment 11, the middle part of battery compartment 11 has auxiliary beam 12, electric core subassembly 2's top has prevents loading board 13, this prevent that loading board 13 is honeycomb shape structure, can play vertical bearing function, it receives vertical load to avoid electric core subassembly 2, can also strengthen the anti-impact deformation ability of 1 side direction of floor frame subassembly, can effectively reduce the gravity of power battery structure again, thereby be favorable to protecting electric core subassembly 2, improve electric core subassembly 2's safety in utilization and life.
The power battery structure of this embodiment is integrated with the floor 114 of electric core subassembly 2 and vehicle to promoted the volume that holds of battery compartment 11, can hold more electric cores simultaneously, thereby be favorable to promoting battery capacity, reach the effect that increases continuation of the journey mileage.
For the internal space of the battery compartment 11, the power battery structure of the embodiment is only internally provided with one auxiliary beam 12, and the cross design of the transverse and longitudinal beams is cancelled, so that the space occupied by a plurality of beam bodies is saved, and the space utilization rate of the battery compartment 11 is improved.
For the problem that the strength of the floor frame assembly 1 is reduced after the transverse and longitudinal beams inside the battery compartment 11 are removed, optionally, the longitudinal beam body in the floor frame assembly 1 is locally thickened, and the strength of the longitudinal beam body is improved by using the locally thickened design.
Illustratively, the material of the upper surface and the outer side surface of the longitudinal beam body is thickened, so that the overall strength of the floor frame assembly 1 can not be affected.
In some possible implementations, the through holes are arranged in an array on the load-proof plate 13, so that the load-proof plate 13 has a honeycomb shape.
Illustratively, the shape of the through-hole includes, but is not limited to, a circular hole, an elliptical hole, a square hole, an elongated hole, and the like. Optionally, the load-resistant plate 13 is made using a stamping process.
As another example, the lower surface of the loading-prevention plate 13 is spaced from the upper surface of the cell assembly 2, so that the loading-prevention plate 13 has a certain space for buffering the downward deformation, thereby better protecting the cell assembly 2 below.
In some possible implementations, the floor frame assembly 1 is provided with a battery cooling liquid channel 14, and the battery cooling liquid can be introduced into the battery compartment 11 through the battery cooling liquid channel 14 to control the temperature of the electric core assembly 2, so as to improve the use safety of the electric core assembly 2.
As shown in connection with fig. 1 and 2, in some embodiments, the battery compartment 11 includes two transverse frame beams 111, two longitudinal frame beams 112, a bottom plate 113, and a floor 114.
The two transverse frame beams 111 and the two longitudinal frame beams 112 are respectively and sequentially connected after being arranged along the transverse direction or the longitudinal direction, the bottom plate 113 is positioned on one side of the battery compartment 11 facing the ground, and the bottom plate 113 is respectively connected with the two transverse frame beams 111 and the two longitudinal frame beams 112; the floor 114 is located on a side of the battery compartment 11 facing away from the bottom surface, and the floor 114 is connected to the two transverse frame beams 111 and the two longitudinal frame beams 112, respectively.
The auxiliary beam 12 is arranged parallel to the two longitudinal frame beams 112, and both ends of the auxiliary beam 12 are connected to the two transverse frame beams 111, respectively.
The battery compartment 11 of the present embodiment is surrounded by two transverse frame beams 111 and two longitudinal frame beams 112 to form a circumferential frame, and a floor 114 and a bottom plate 113 respectively cover the upper and lower sides of the circumferential frame, thereby forming a closed battery compartment 11. Inside the battery compartment 11, an auxiliary beam 12 is arranged in the middle along the longitudinal direction, and is respectively connected with two transverse frame beams 111, and the auxiliary beam 12 plays a role of reinforcing the strength of the floor frame assembly 1.
Illustratively, the longitudinal direction refers to a direction parallel to the direction of the head and tail of the vehicle, the transverse direction is a direction of the side of the vehicle, and the vertical direction is a direction perpendicular to the ground.
In some possible implementations, the lower surface of the bottom plate 113 is flush with the lower surfaces of the longitudinal frame beams 112 and the transverse frame beams 111, thereby ensuring that the bottom plate 113 is not stressed alone with maximum vertical utilization of the dimensions.
The periphery of the bottom plate 113 is welded to the inner side surfaces of the transverse frame beam 111 and the longitudinal frame beam 112. It should be noted that, the assembly of the bottom plate 113 is performed before the electric core assembly 2 and the floor plate 114, and it is required to ensure that the upper and lower ends of the circumferential side surface of the bottom plate 113 are symmetrically welded, respectively, so as to ensure the welding tightness of the bottom plate 113 with the inner side surfaces of the transverse frame beam 111 and the longitudinal frame beam 112.
Fig. 3 is a structural sectional view of a power battery structure provided in an embodiment of the present disclosure.
As shown in fig. 2 and 3, in some embodiments, the battery cell assembly 2 includes a first battery cell 21 and a second battery cell 22, and the carrier plate 13 includes a first plate 131 and a second plate 132; the first cell 21 and the second cell 22 are symmetrically arranged in the battery compartment 11 along the auxiliary beam 12, the first plate 131 is located above the first cell 21, and the second plate 132 is located above the second cell 22.
The auxiliary beam 12 of the present embodiment is disposed in the middle of the battery compartment 11 along the longitudinal direction, and divides the battery compartment 11 into two parts, so that the first cell 21 and the second cell 22 can be disposed in the two parts of the battery compartment 11, and the first plate 131 and the second plate 132 are disposed above the first cell 21 and the second cell 22, so as to perform vertical anti-load protection on each cell.
The load-proof plate 13 is divided into the first plate 131 and the second plate 132 having a small area, thereby contributing to an improvement in the strength and load-bearing capacity of each plate.
Fig. 4 is a partially enlarged view of a portion a in fig. 3, showing an assembly structure of the lateral frame beam 111 and the longitudinal frame beam 112 with the load-proof plate 13. Fig. 5 is a partially enlarged view of B in fig. 3, showing an assembly structure of the auxiliary beam 12 and the load-proof plate 13.
As shown in fig. 4 and 5, in some embodiments, the lateral frame beam 111 is provided with a first mounting step 1111 at a side facing the inside of the battery compartment 11, the longitudinal frame beam 112 is provided with a second mounting step 1121 at a side facing the inside of the battery compartment 11, and the auxiliary beam 12 is provided with a third mounting step 121 at an upper surface thereof.
The edge of the loading prevention plate 13 is connected with the first assembly step 1111, the second assembly step 1121 and the third assembly step 121, respectively, and the first assembly step 1111, the second assembly step 1121 and the third assembly step 121 support the loading prevention plate 13 above the electric core assembly 2.
Exemplarily, the load-resisting plate 13 is mounted behind the first assembly step 1111, the second assembly step 1121 and the third assembly step 121, and is reinforced by welding, so that the load-resisting plate 13 is rigidly connected to the floor frame assembly 1, and the load-resisting plate 13 has better capability of bearing vertical load and lateral load.
By carrying and rigidly connecting the load-resistant plate 13 to the first assembly step 1111, the second assembly step 1121 and the third assembly step 121, rigid connection of the peripheral edges of the load-resistant plate 13 is achieved, the reliability of connection between the load-resistant plate 13 and the floor frame assembly 1 is high, and good protection capability can be provided when vertical load or lateral load is applied.
As shown in fig. 6, in some embodiments, the first mounting step 1111 protrudes toward the inside of the battery compartment 11 along the inner side surface of the lateral frame rail 111, and the top surface of the first mounting step 1111 is connected to the loading prevention plate 13.
The second fitting step 1121 protrudes toward the inside of the battery compartment 11 along the inner side surface of the longitudinal frame beam 112, and the top surface of the second fitting step 1121 is connected to the load-preventing plate 13.
The first assembly step 1111 and the second assembly step 1121 function to support the load-resisting plate 13, and by means of the protruding arrangement of the transverse frame beam 111 or the longitudinal frame beam 112 toward the inner side of the battery compartment 11, the reserved gap between the inner wall of the battery compartment 11 and the electric core assembly 2 is fully utilized, and the damage to the rigid cross section of the transverse frame beam 111 and the longitudinal frame beam 112 can be avoided, so that the transverse frame beam 111 and the longitudinal frame beam 112 maintain good rigidity.
In some possible implementations, the cross-sectional shapes of the first fitting step 1111 and the second fitting step 1121 include, but are not limited to, a right triangle, a right trapezoid, a rectangle, and the like.
Illustratively, the cross-sectional shape of the second fitting step 1121 is a right-angled trapezoid whose right-angled sides are located at the top surface for contacting the support shield plate 13. The lower bottom edge (longer edge) of the right trapezoid is connected with the inner side surface of the battery compartment 11 (i.e., the inner side surface of the longitudinal frame beam 112), so that the connection area of the two is increased. In addition, the other side of the right trapezoid is supported on the inner side of the battery compartment 11 in an inclined manner, which is beneficial to improving the bearing capacity of the second assembly step 1121.
In another possible implementation, the second assembling step 1121 is integrally formed with the longitudinal frame beam 112, such as integrally extrusion molding, integrally fusion-cast imaging, and the like.
As shown in fig. 6, in some embodiments, the material thickness d of the upper surface of the two longitudinal frame beams 112 and the outer side surface facing away from the battery compartment 11 has a value in the range of 5mm to 10mm.
The material thickness d of the upper surface and the outer side surfaces of the two longitudinal frame beams 112 satisfies the above value, so that the rigidity of the longitudinal frame beams 112 can be enhanced, and the rigidity loss of a plurality of beams in the battery compartment 11 can be compensated.
As shown in fig. 6, in some embodiments, the upper surface of the transverse frame beam 111 is provided with a first rib structure 1112, and the upper surface of the longitudinal frame beam 112 is provided with a second rib structure 1122; the first bead structure 1112 is located on the outer side of the first fitting step 1111, and the second bead structure 1122 is located on the outer side of the second fitting step 1121.
The top surfaces of the first assembling step 1111 and the second assembling step 1121 are respectively connected to the lower surface of the load-resisting plate 13, and the inner side surfaces of the first rib structure 1112 and the second rib structure 1122 are respectively connected to the outer side surface of the load-resisting plate 13.
The upper surfaces of the first rib structure 1112 and the second rib structure 1122 are connected to the lower surface of the floor panel 114, respectively.
The upper surfaces of the transverse frame beams 111 and the longitudinal frame beams 112 of the present embodiment are connected to a floor 114, the area of the floor 114 is larger than that of the battery compartment 11, and the peripheries of the floor are connected to the transverse frame beams 111 and the longitudinal frame beams 112, respectively, so as to close the battery compartment 11.
The first rib structure 1112 and the second rib structure 1122 form a sealing rib at the periphery of the opening of the battery compartment 11, so as to achieve a double sealing effect when connected with the floor 114.
As shown in connection with fig. 6, in some embodiments, the height of the upper surfaces of the first rib structure 1112 and the second rib structure 1122 is greater than the height of the upper surfaces of the transverse frame beams 111 and the longitudinal frame beams 112.
In other embodiments, the height of the upper surfaces of the first and second rib structures 1112 and 1122 is greater than the height of the top surfaces of the first and second mounting steps 1111 and 1121.
In other embodiments, the heights of the upper surfaces of the first rib structures 1112 and the second rib structures 1122 are greater than the heights of the upper surfaces of the transverse frame beams 111 and the longitudinal frame beams 112 and the heights of the top surfaces of the first mounting step 1111 and the second mounting step 1121.
In other embodiments, the heights of the upper surfaces of the first rib structures 1112 and the second rib structures 1122 are greater than the heights of the upper surfaces of the transverse frame beams 111 and the longitudinal frame beams 112, and the heights of the upper surfaces of the transverse frame beams 111 and the longitudinal frame beams 112 are greater than the heights of the top surfaces of the first assembly steps 1111 and the second assembly steps 1121.
As shown in fig. 6, in some embodiments, the lower surface of the longitudinal frame beam 112 is provided with an inwardly recessed trace channel 1113, and the opening of the trace channel 1113 is sealed by a cover plate 1114; the lower surface of the longitudinal frame beam 112 is provided with a guard rib 1115, and the guard rib 1115 protrudes below the cap member 1114.
In the power battery structure of the embodiment, the wiring channel 1113 is formed in the lower surface of the longitudinal frame beam 112, so that a layout space is provided for water, electricity and the like of the front cabin and the rear cabin of the vehicle, and the problem of difficulty in wiring of the front cabin and the rear cabin in a CTC battery scheme is solved.
The wiring channel 1113 is concavely arranged in the longitudinal frame beam 112 and is sealed by the cover plate member 1114, the wiring harness in the wiring channel 1113 is high in safety and has good concealment, and the appearance effect of the bottom is improved.
The protection rib 1115 that the lower surface of vertical frame roof beam 112 set up, the below of protruding to the apron piece 1114 can be as the atress fulcrum of vertical load, prevents that the apron piece 1114 from atress damaging.
In some possible implementations, at least one wire harness is disposed in the routing channel 1113, and the at least one wire harness is connected to the inner wall of the routing channel 1113 through a buckle bolt. Illustratively, the wiring harness includes, but is not limited to, a low voltage circuit harness, a cooling water circuit, and the like.
Referring to FIG. 6, in some embodiments, a cooling water chamber 1131 and a crash cushion chamber 1132 are provided in the base plate 113; a cooling water chamber 1131 is located near the battery compartment 11 for receiving and circulating cooling water; the crash cushion chamber 1132 is located near the bottom surface for providing bottom crash cushion for the electrical core assembly 2. So that the bottom plate 113 can provide good cooling and collision protection functions for the power battery at the lower side.
In another aspect, the present embodiment provides a vehicle including the power battery structure of the present disclosure.
The vehicle of this embodiment adopts the power battery structure of this disclosure, has the whole technological effect of this disclosure.
In the vehicle of the embodiment, the power battery and the vehicle body are directly and integrally assembled, a battery pack assembly does not need to be assembled in advance, and the battery pack assembly does not need to be transported to the vehicle body for assembly, so that the transportation cost and the secondary assembly link are effectively reduced; and the redundant structure can be effectively reduced, so that the problems of inconvenient transportation of the battery pack, redundant structure and the like caused by non-integrated connection of the battery pack and the vehicle body are solved.
It is noted that, as used herein, references to "a plurality" or "at least one" mean one or more, and references to "a plurality" or "at least two" mean two or more. "and/or" describes the association relationship of the associated objects, meaning that there may be three relationships, e.g., a and/or B, which may mean: a exists alone, A and B exist simultaneously, and B exists alone. The character "/" generally indicates that the former and latter associated objects are in an "or" relationship.
In the description of the present disclosure, it should be noted that, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as being fixedly connected, detachably connected, or integrally connected; may be a mechanical connection; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present disclosure can be understood by those of ordinary skill in the art as appropriate.
The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of the present disclosure, "a plurality" means two or more unless specifically limited otherwise.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise the first and second features being in direct contact, or may comprise the first and second features being in contact, not directly, but via another feature in between. Also, the first feature "on," "above" and "over" the second feature may include the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present specification, reference to the description of the terms "certain embodiments," "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples" means that a particular feature, structure, material, or characteristic described in connection with the embodiments or examples is included in at least one embodiment or example of the present disclosure.
The above description is only exemplary of the present disclosure and should not be taken as limiting the disclosure, as any modifications, equivalents, improvements and the like within the spirit of the present disclosure should be included in the scope of the present disclosure.
Claims (10)
1. A power cell structure, comprising: the floor frame assembly (1) and the electric core assembly (2);
the floor frame assembly (1) comprises a battery compartment (11), an auxiliary beam (12) and a bearing plate (13);
the electric core assembly (2) is positioned in the battery cabin (11);
the auxiliary beam (12) is longitudinally arranged in the middle of the battery compartment (11), and two ends of the auxiliary beam are respectively connected with the inner wall of the battery compartment (11);
prevent that loading board (13) is located the top of electric core subassembly (2), prevent the edge of loading board (13) respectively with the inner wall of battery compartment (11) and auxiliary beam (12) are connected, prevent that loading board (13) are honeycomb structure, prevent that loading board (13) is used for preventing electric core subassembly (2) bear vertical load.
2. The power cell structure according to claim 1, characterized in that the battery compartment (11) comprises two transverse frame beams (111), two longitudinal frame beams (112), a floor (113) and a floor (114);
the two transverse frame beams (111) and the two longitudinal frame beams (112) are respectively arranged in the transverse direction or the longitudinal direction and then are sequentially connected, the bottom plate (113) is positioned on one side, facing the ground, of the battery compartment (11), and the bottom plate (113) is respectively connected with the two transverse frame beams (111) and the two longitudinal frame beams (112); the floor (114) is positioned on one side of the battery compartment (11) which is far away from the bottom surface, and the floor (114) is respectively connected with the two transverse frame beams (111) and the two longitudinal frame beams (112);
the auxiliary beam (12) is arranged in parallel with the two longitudinal frame beams (112), and two ends of the auxiliary beam (12) are respectively connected with the two transverse frame beams (111).
3. The power battery structure of claim 2, wherein the battery assembly (2) comprises a first battery cell (21) and a second battery cell (22), and the load-resistant plate (13) comprises a first plate body (131) and a second plate body (132);
the first battery cell (21) and the second battery cell (22) are symmetrically arranged in the battery compartment (11) along the auxiliary beam (12), the first plate body (131) is located above the first battery cell (21), and the second plate body (132) is located above the second battery cell (22).
4. The power battery structure according to claim 2, characterized in that the lateral frame beam (111) is provided with a first fitting step (1111) at the side facing the inside of the battery compartment (11), the longitudinal frame beam (112) is provided with a second fitting step (1121) at the side facing the inside of the battery compartment (11), and the auxiliary beam (12) is provided with a third fitting step (121) at the upper surface;
edges of the load-prevention plate (13) are connected with the first assembly step (1111), the second assembly step (1121) and the third assembly step (121), respectively, and the first assembly step (1111), the second assembly step (1121) and the third assembly step (121) support the load-prevention plate (13) above the electric core assembly (2).
5. The power battery structure according to claim 4, characterized in that the first assembling step (1111) is protruded toward the inside of the battery compartment (11) along the inner side surface of the lateral frame beam (111), and the top surface of the first assembling step (1111) is connected with the loading prevention plate (13);
the second assembling step (1121) protrudes towards the inside of the battery compartment (11) along the inner side surface of the longitudinal frame beam (112), and the top surface of the second assembling step (1121) is connected with the bearing plate (13).
6. The power cell structure of claim 4, wherein the upper surface of the transverse frame beam (111) is provided with a first rib structure (1112), and the upper surface of the longitudinal frame beam (112) is provided with a second rib structure (1122);
the first bead structure (1112) is located on the outer side of the first fitting step (1111), and the second bead structure (1122) is located on the outer side of the second fitting step (1121);
the top surfaces of the first assembling step (1111) and the second assembling step (1121) are respectively connected with the lower surface of the bearing plate (13), and the inner side surfaces of the first rib structure (1112) and the second rib structure (1122) are respectively connected with the outer side surface of the bearing plate (13);
the upper surfaces of the first rib structure (1112) and the second rib structure (1122) are respectively connected with the lower surface of the floor board (114).
7. The power cell structure of claim 6, wherein the height of the upper surfaces of the first rib structure (1112) and the second rib structure (1122) is greater than the height of the upper surfaces of the transverse frame beam (111) and the longitudinal frame beam (112);
and/or the presence of a gas in the gas,
the heights of the upper surfaces of the first bead structure (1112) and the second bead structure (1122) are greater than the heights of the top surfaces of the first fitting step (1111) and the second fitting step (1121).
8. The power battery structure according to claim 2, characterized in that the lower surface of the longitudinal frame beam (112) is provided with an inwardly recessed routing channel (1113), and the opening of the routing channel (1113) is sealed by a cover plate member (1114); the lower surface of the longitudinal frame beam (112) is also provided with a protective rib (1115), and the protective rib (1115) protrudes below the cover plate component (1114).
9. The power battery structure according to claim 2, characterized in that a cooling water cavity (1131) and a collision buffer cavity (1132) are arranged in the bottom plate (113);
the cooling water cavity (1131) is located close to the battery compartment (11) and is used for containing and circulating cooling water; the collision buffer cavity (1132) is positioned close to the bottom surface and used for providing bottom collision buffer for the electric core component (2).
10. A vehicle characterized by comprising the power cell structure of any one of claims 1-9.
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| CN202211065451.4A CN115312938B (en) | 2022-09-01 | 2022-09-01 | Power battery structure and vehicle |
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| CN202211065451.4A CN115312938B (en) | 2022-09-01 | 2022-09-01 | Power battery structure and vehicle |
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