CN219350576U - Battery pack and electric vehicle - Google Patents
Battery pack and electric vehicle Download PDFInfo
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- CN219350576U CN219350576U CN202320545259.9U CN202320545259U CN219350576U CN 219350576 U CN219350576 U CN 219350576U CN 202320545259 U CN202320545259 U CN 202320545259U CN 219350576 U CN219350576 U CN 219350576U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
Abstract
The present utility model relates to a battery pack and an electric vehicle. The battery pack comprises a box body and N battery packs, wherein N is more than or equal to 2 and is an integer; the box body comprises a mounting cavity for accommodating N battery packs; n battery packs are arranged in sequence along a second direction, each battery pack comprises a plurality of battery cells arranged along a first direction, each battery cell comprises a shell, a first pole and a second pole, the first pole and the second pole are arranged on two sides of the shell, and in the same battery pack, the first pole of one battery cell is connected with the second pole of the other battery cell in two adjacent battery cells, so that the two adjacent battery cells are electrically connected. Therefore, a plurality of electric cores in the battery pack are sequentially arranged in series, and the process of arranging the insulating sheets is omitted, so that the space utilization rate in the battery pack can be improved, and the process difficulty is reduced.
Description
Technical Field
The utility model relates to the technical field of batteries, in particular to a battery pack and an electric vehicle.
Background
The short endurance distance and long charging time are one of limiting factors for development of the electric automobile, the improvement of the battery energy density is a main technical path for solving the technical problem of short endurance distance of the electric automobile, one of the methods for improving the battery energy density is to improve the space utilization rate of a battery pack, and more battery cells can be arranged in the battery pack by improving the space utilization rate in the battery pack.
The prior battery pack comprises a plurality of battery cells, the battery cells are sequentially connected in series, when the battery cells are connected in series, the positive pole post and the negative pole post of the adjacent battery cells are generally fixed through welding, meanwhile, an inter-battery cell insulating sheet is further arranged between the adjacent battery cells, so that the space utilization rate in the battery pack is reduced, and the process difficulty is also increased.
Disclosure of Invention
The utility model provides a battery pack and an electric vehicle, which are used for solving the technical problems of low space utilization rate and high process difficulty caused by the fact that an insulating sheet between cells needs to be arranged in the conventional battery pack and the electric vehicle for connecting a positive pole post and a negative pole post of adjacent cells through a welding process.
The present utility model provides a battery pack comprising: the battery pack comprises a box body and N battery packs, wherein N is more than or equal to 2 and is an integer; the box body comprises a mounting cavity for accommodating N battery packs; n the group battery is arranged in proper order along the second direction, every the group battery includes a plurality of edges the electric core of arranging of first direction, every the electric core include the casing with set up in first utmost point post and the second utmost point post of casing both sides in same in the group battery, adjacent two in the electric core, first utmost point post of electric core is connected with another the second utmost point post of electric core, so that adjacent two the electric core electricity is connected.
The first pole comprises a first top surface, the second pole comprises a second top surface, and the first top surface and the second top surface are propped against each other and welded.
The first pole comprises a first top surface, the second pole comprises a second top surface, a first protruding portion is arranged on the first top surface, a first concave portion is arranged at a position, corresponding to the protruding portion, on the second top surface, and the protruding portion is inserted into the concave portion.
The first pole comprises a first top surface, the second pole comprises a second top surface, the surface area of the second top surface is larger than that of the first top surface, a second concave part is arranged on the second top surface corresponding to the position of the first top surface, and the first pole is inserted into the second concave part.
Wherein, be equipped with the cooling plate between two adjacent group battery.
In each battery pack, two opposite side surfaces of the battery cell in the second direction are first side surfaces, and two side surfaces of the battery cell in the first direction are second side surfaces; the first side has an area greater than an area of the second side.
And heat-conducting glue is arranged between the cooling plate and the battery cell connected with the cooling plate.
Wherein, be provided with one or more baffles in the box, the baffle will the installation cavity is divided into a plurality of check mouths, and at least one group battery is held to every check mouth.
The box body comprises a top plate and a bottom plate, and structural adhesive used for bonding is arranged between each battery cell in the battery pack and the top plate and the bottom plate.
The two ends of the cooling plate in the first direction are provided with extension parts and notch parts which are parallel to the extension parts, and the extension parts are fixedly connected with the box body; the cooling plate is internally provided with a refrigerant pipeline, and the refrigerant pipeline is communicated with an external pipeline at the notch part.
The box body comprises a first electric connection terminal and a second electric connection terminal, and any two adjacent battery packs among the N battery packs are connected in series at the notch part so as to connect the N battery packs in series in sequence; in the N battery packs, according to a second direction, the first pole of one end of the battery pack in the first direction, which is arranged in the first order, is electrically connected with the first electric connection terminal, and the second pole of one end of the battery pack in the first direction, which is arranged in the nth order, is electrically connected with the second electric connection terminal.
Each cell is provided with an explosion-proof valve, and the explosion-proof valve is arranged at the bottom side of the cell.
The utility model provides an electric vehicle which comprises the battery pack.
Compared with the prior art, the battery pack and the electric vehicle provided by the utility model have the following advantages:
in the battery pack provided by the utility model, among the plurality of battery cells which are sequentially arranged along the first direction in each battery pack, the first pole and the second pole of the two adjacent battery cells can be connected with each other only by being clamped on the contact surface of the two adjacent battery cells, so that the sequential serial arrangement of the plurality of battery cells in the battery pack is realized. The process of arranging the insulating sheet is omitted, so that the space utilization rate in the battery pack can be improved, and the process difficulty is reduced.
The electric vehicle provided by the utility model comprises the battery pack, and certainly has the beneficial effects consistent with those of the battery pack, and the details are not repeated.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the utility model and together with the description, serve to explain the principles of the utility model.
In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, and it will be obvious to a person skilled in the art that other drawings can be obtained from these drawings without inventive effort.
Fig. 1 is a schematic structural diagram of a battery cell of a battery pack in a first view angle direction according to an embodiment of the present utility model;
fig. 2 is a schematic structural diagram of the battery cell shown in fig. 1 in a second view angle direction;
FIG. 3 is a schematic diagram of two cell connections in a battery pack;
FIG. 4 is a schematic illustration of the connection of the cells in a battery pack to a cooling plate;
FIG. 5 is a schematic illustration of the connection of the cooling plate, cells in a battery pack, and the case;
fig. 6 is a schematic view of the structure of fig. 5 in a top view.
In the figure:
10-a box body; 11-cell grid; 12-cooling plates;
121-an extension; 122-notch portion;
20-an electric core; 21-a first pole; 22-second pole; 23-a first side; 24-a second side; 25-explosion-proof valve; 26-structural adhesive.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Embodiments of a battery pack and an electric vehicle according to the present utility model will be described below with reference to the accompanying drawings.
In one embodiment of the battery pack of the present utility model, referring to FIGS. 1 to 6, the battery pack includes a case 10 and N battery packs, N.gtoreq.2 and being an integer. The case 10 includes a mounting cavity for accommodating N battery packs. N battery packs are arranged in sequence along the second direction, each battery pack comprises a plurality of battery cells 20 which are arranged along the first direction, each battery cell 20 comprises a shell, a first pole column 21 and a second pole column 22 which are arranged on two sides of the shell, and in the same battery pack, the first pole column 21 of one battery cell 20 is connected with the second pole column 22 of the other battery cell 20 in two adjacent battery cells, so that the two adjacent battery cells are electrically connected. The N battery packs are sequentially arranged along the second direction, the N battery packs are connected in series, and the first pole post 21 and the second pole post 22 which are positioned at two ends after the N battery packs are connected in series are respectively connected with the first electric terminal and the second electric terminal.
In this embodiment, among the plurality of battery cells 20 sequentially arranged along the first direction in each battery pack, on the contact surface of two adjacent battery cells 20, the first pole 21 and the second pole 22 of the two battery cells 20 can be attached to each other only by being clamped, so as to realize sequential serial arrangement of the plurality of battery cells 20 in the battery pack. The arrangement can cancel the welding process between two adjacent battery cells 20 and cancel the arrangement of the insulating sheets between the battery cells, thereby improving the space utilization rate in the battery pack and reducing the process difficulty.
On the basis of the structure, the plurality of battery packs sequentially arranged along the second direction can be sequentially connected in series along the second direction, can be optionally matched in series, can be sequentially connected in parallel or optionally matched in parallel along the second direction, and can be further connected in series and parallel, so long as a complete charge and discharge loop can be formed.
In one embodiment of the battery pack, the first top surface of the first pole 21 and the second top surface of the second pole 22 are abutted and fixed by adopting a welding mode, the first top surface and the second top surface can be directly abutted, or heat-conducting glue can be arranged between the first top surface and the second top surface for being abutted again, the limitation is not limited herein, the first top surface is the surface of the first pole 21 away from the battery core, and the second top surface is the surface of the second pole 22 away from the battery core, and the manufacturing and assembling efficiency of the method of the first abutting and then welding is high, the operation steps are few, and the cost is reduced.
In an embodiment of the battery pack, a first protruding portion is disposed on a first top surface of the first pole 21, a first recess portion is disposed on a position, corresponding to the first protruding portion, of a second top surface of the second pole 22, the first protruding portion is inserted into the first recess portion, preferably, the first protruding portion is matched with the first recess portion, so that the first top surface is connected with the second top surface, the contact surface is large, the overcurrent area is large, the adaptation is not an absolute size perfect match, for example, a difference between a protruding size of the first protruding portion and a concave size of the first recess portion is in an error range of + -10%, the protruding size of the first protruding portion and the concave size of the first recess portion are optionally in butt joint, adhesion, welding, buckling connection and the like, so long as the mutual fixing and positioning can be guaranteed, two adjacent electric cores can be made to be in a first direction and a second direction, the electric core can be not loose, the welding process can be omitted, and the laser welding process can be prevented, and the laser welding process can be omitted.
In an embodiment of the battery pack, the surface area of the second top surface of the second pole 22 is larger than the surface area of the first top surface 21 of the first pole 21, a second concave portion is disposed on the second top surface corresponding to the position of the first top surface, the first pole 21 is inserted into the second concave portion, in a preferred embodiment, the first pole 21 is matched with the second concave portion, so that the first top surface is connected with the bottom surface of the second concave portion, the contact surface is large, the overflow area is large, the connection mode optionally has a fitting arrangement, an abutting arrangement, an adhesion arrangement, a welding arrangement, a buckling connection arrangement and the like, and the first top surface is preferably fitted with the bottom surface of the second concave portion.
In one embodiment of the battery pack, the case 1 includes a first electrical terminal and a second electrical terminal, and any adjacent two battery packs are arranged in series to connect N of the battery packs in series in order; of the N battery packs, the first electrode post 21 of one end of the battery pack of the first order in the first direction is electrically connected to the first electric connection terminal, and the second electrode post 22 of one end of the battery pack of the nth order in the first direction is electrically connected to the second electric connection terminal, based on the second direction. It is easy to say that in this embodiment, the second post 22 at one end of the first battery pack is connected to the first post 21 at one end of the second battery pack in the second direction, while the second post 22 at the other end of the second battery pack is connected to the first post 21 at one end of the third battery pack, and so on, to the last battery pack, and one second post 22 remains in the last battery pack, and this second post 22 is electrically connected to the second electric terminal, while the first post 21 in the aforementioned first battery pack is electrically connected to the first electric terminal. With the above arrangement, all the cells in the first battery pack to the last battery pack are connected in series between the first and second power receiving terminals, in which case all the cells in the battery pack are connected in series as a unit, and the outside is charged and discharged through the first and second power receiving terminals.
In one embodiment of the battery pack, each battery pack is provided with a cooling plate 12 connected to a plurality of cells 20 within the battery pack at one or both sides in the second direction.
In this embodiment, for the plurality of cells 20 in each battery pack, the cooling plates 12 located at one side or both sides thereof can exchange heat therewith, as shown in fig. 4 to 6. Specifically, a liquid-cooled or air-cooled circulation pipeline can be arranged in the cooling plate 12, and heat exchange is performed between the liquid-state or gaseous-state refrigerant in the circulation pipeline and the side part of the battery cell. In practical implementation of the present utility model, it is preferable to use a liquid cooling system, and the refrigerant in the circulation line is preferably water.
In this embodiment, the cooling plates 12, which are provided at one side or both sides of the plurality of battery cells 20 of each battery pack, are connected and contacted with the side portions of the battery cells 20 in the horizontal direction, performing heat exchange; when the temperature of the battery cell 20 is higher, the battery cell 20 is cooled, so that the overheat of the battery cell 20 is avoided, the performance and the safety of the battery cell 20 are affected, and the battery cell 20 can be heated or insulated when the temperature of the battery cell 20 is lower, so that the performance of the battery cell 20 is prevented from being deteriorated due to the lower temperature of the battery cell 20.
In one embodiment of the battery pack, in each of the battery packs, two opposite sides of the battery cell 20 in the second direction are the first sides 23, and two sides in the first direction are the second sides 24; the area of the first side 23 is larger than the area of the second side 24.
For the battery cells 20, the first side 23 is actually the side of the battery cell 20 connected to the cooling plate 12, the first pole 21 and the second pole 22 are respectively disposed on the second sides 24 of the battery cells 20, and the two second sides 24 of each battery cell 20 are actually the connection surfaces between the adjacent battery cells 20. In this embodiment, the first side 23 with a larger area of the battery cell 20 is connected to the cooling plate 12, the contact area between the cooling plate 12 and the battery cell 20 is larger, and the heat exchange efficiency between the cooling plate 12 and the battery cell 20 is higher, so that the heat dissipation effect on the battery cell 20 can be enhanced. In this case, compared with the prior art in which the heat exchange and heat dissipation are performed on the bottom side of the battery cell 20, the cooling plate 12 in this embodiment can have significantly higher heat exchange and heat dissipation effects on the battery cell 20.
Of course, in the present embodiment, the second side 24 of the battery cell 20 may be used as the side of the battery cell 20 connected to the cooling plate 12, the first pole 21 and the second pole 22 may be disposed on the first side 23, and the first side 23 may be used as the connection surface between the battery cell 20 and the adjacent battery cell 20. In this case, the area of the cell 20 connected to the cooling plate 12 is smaller than that of the above-described embodiment. However, when the height of the cell 20 is greater than half the length of the cell 20 in the first direction, the area of the two second sides 24 of the cell 20 will be greater than the area of the bottom side of the cell 20; by arranging two cooling plates 12 on both sides of each battery pack, the two cooling plates 12 are respectively connected with the second side surfaces 24 on both ends of the battery cells 20 in the battery pack, the total heat exchange area between the battery cells 20 and the two cooling plates 12 can be larger than the heat exchange area of the battery cells on the bottom sides of the battery cells in the prior art, so that compared with the scheme in the prior art, the heat exchange efficiency between the cooling plates 12 and the battery cells 20 can be higher, and the heat dissipation effect on the battery cells 20 can be enhanced.
In this embodiment, the first side 23 of the battery cell 20 may be connected to the cooling plate 12, or the second side 24 may be connected to the cooling plate 12, as desired. When the heat dissipation requirement of the battery cell 20 is not high, for example, a battery pack applied to an electric vehicle sold and used in a region with high latitude and cold climate, the second side 24 of the battery cell 20 may be arranged to be connected with the cooling plate 12, and the first pole 21 and the second pole 22 are respectively arranged on the two first sides 23 of the battery cell 20, and in each battery pack, the first sides 23 of adjacent battery cells 20 are opposite to each other and are sequentially connected. When the heat dissipation requirement of the battery cell 20 is high, for example, a battery pack for electric vehicles sold and used in areas with low temperature and warmer climate may be provided, wherein the first side 23 of the battery cell 20 is connected with the cooling plate 12, and the first pole 21 and the second pole 22 are respectively arranged on the two second sides 24 of the battery cell 20, and in each battery pack, the second sides 24 of adjacent battery cells 20 are opposite to each other and are sequentially connected. In practice, embodiments are preferred in which the first side 23 of the cell 20 is connected to the cooling plate 12.
In this embodiment, since the cooling plates 12 have been provided at the side of each battery pack, the need for heat exchange of the battery cells 20 is satisfied. With the battery pack of the present embodiment, there is no need to provide a cooling plate at the bottom of each battery pack, thus saving the space that the battery pack needs to occupy in the Z-direction (vertical direction).
In the prior art, the cabinet 10 generally includes a floor, side panels, and end panels, etc., that together define a mounting cavity. In the present embodiment, however, the cooling plates 12 are provided at the side of each battery pack to function as side plates, so that the case 10 can be provided without additional side plates. And, the cooling plate 12 is used for replacing the side plate, the installation mode is basically the same as that of the side plate in the prior art, and the whole structure of the box body 10 does not need to be greatly adjusted or redesigned.
In addition, the cooling plates 12 are provided at the sides of each battery pack, so that the volume expansion of the battery cells 20 in each battery pack, which may occur during operation, can be suppressed, and the cooling plates 12 can also serve as reinforcing structures, increasing the structural support strength of the battery pack in the horizontal and vertical directions.
In one embodiment of the battery pack, a heat-conductive gel is disposed between the cooling plate 12 and the cells 20 to which it is connected. By the arrangement, the cooling plate 12 and the battery cell 20 are adhered through the heat conducting adhesive, heat is conducted, the heat exchange area between the cooling plate 12 and the battery cell 20 can be increased, and the effect of heat management on the battery cell 20 is enhanced. In addition, after the cooling plate 12 and the battery cell 20 are connected by the heat-conducting glue, a side plate insulating sheet is not required to be arranged between the side plate and the battery cell as in the prior art, and the number of parts required by the battery pack is reduced in practice compared with the prior art, so that the assembly difficulty can be reduced.
In one embodiment of the battery pack, one or more partitions are disposed within the housing 20 that divide the mounting cavity into a plurality of compartments, each compartment housing at least one battery pack. The partition board can increase the structural strength of the box body 20 and reduce the deformation probability of the box body 20 under the action of external force. Furthermore, the above-described separator may also be used for mounting the cooling plate 12, i.e., attaching the cooling plate 12 to the separator.
In one embodiment of the battery pack, the case 10 includes a top plate and a bottom plate (not shown), and a structural adhesive 26 for bonding is disposed between the battery cells 20 and the top and bottom plates in each battery pack, as shown in fig. 4 (only the structural adhesive 26 on the top is shown). The battery cell 20 can be firmly fixed in the case 10 by connecting the battery cell 20 with the top plate and the bottom plate through the structural adhesive 26.
In one embodiment of the battery pack, the cooling plate 12 has an extension 121 and a notch 122 juxtaposed with the extension 121 at both ends in the first direction, and the extension 121 is fixedly connected to the case 10, specifically, may be welded. Specifically, the notch 122 is located below the extension 121. In this embodiment, the cooling plate 12 can be firmly fixed to the case 10 by the extension 121. In addition to the extension 121, the cooling plate 12 may be fixedly connected to the top and bottom plates of the case 10, and specifically, the cooling plate 12 may be adhesively fixed to the top and bottom plates by using the structural adhesive 26 described in the above embodiment.
As described above, the cooling plate 12 has a refrigerant pipe, which needs to be connected to an external pipe, to circulate the refrigerant, and continuously exchanges heat with the battery cell 20 through the circulation of the refrigerant. Specifically, the refrigerant line in the cooling plate 12 may be in communication with the external line at the notch 122. Taking the refrigerant pipeline as water cooling as an example, the water inlet and the water outlet of the refrigerant pipeline in the cooling plate 12 are arranged at the notch 122.
In this embodiment, among the N battery packs, any adjacent two battery packs are disposed in series at the notch 122 to connect the N battery packs in series in order.
In one embodiment of the battery pack, the cells 20 in each battery pack have an explosion-proof valve 25, and the explosion-proof valve 25 is disposed at the bottom side of the cells 20, as shown in fig. 4 and 5.
The inventors of the present utility model have found that existing cells typically have a cooling plate arranged on the bottom side of the cell for cooling the cell, and accordingly that the explosion-proof valve can typically only be arranged on the top side of the cell. Taking the vehicle with the battery cell as an example, the following technical problems can occur in practice: when the battery cell accidentally discharges toxic gases outwards, the gases discharged from the battery cell rapidly diffuse and spread to the passenger cabin of the vehicle due to the explosion-proof valve facing the passenger cabin of the vehicle, which brings about the risk of damage to passengers in the passenger cabin of the vehicle.
Based on the above findings, in the present utility model, the inventors have found that, in the technical solution of the present utility model, in which the cooling plates 12 are provided at the sides of each row of battery packs on the case 10, the cooling plates 12 are brought into contact with the sides of the cells 20 and heat exchange is performed, so that the cooling plates 12 for cooling the cells 20 are not arranged at the bottom sides of the cells 20, thus freeing up space at the bottom sides of the cells 20, and the explosion-proof valves 25 can be provided at the bottom sides of the cells 20. After the explosion-proof valve 25 is disposed at the bottom side of the battery cell 20, when toxic gases are ejected from the explosion-proof valve 25 to the outside of the battery cell 20 due to an accident, the toxic gases are ejected downward toward the ground instead of toward the passenger compartment of the vehicle, so that damage to passengers in the passenger compartment of the vehicle by the ejected toxic gases can be reduced.
In the above embodiment, in each battery pack, the battery cells 20 may have a full tab structure, that is, the tabs are flattened. Under such a full tab structure, the overcurrent area of the battery cell 20 can be increased, the internal resistance of the battery cell 20 and the transmission resistance between the battery cells 20 can be reduced, correspondingly, the heating value of the battery cell 20 can be reduced, the service life of the battery cell 20 can be prolonged, and the thermal management difficulty of the battery cell 20 can be reduced.
In summary, in the battery pack according to the above embodiment of the present utility model, among the plurality of battery cells 20 sequentially arranged along the first direction in each battery pack, on the contact surface of two adjacent battery cells 20, the first pole 21 and the second pole 22 of the two battery cells 20 can be connected to each other only by being clamped, so as to realize sequential serial arrangement of the plurality of battery cells 20 in the battery pack. The arrangement can cancel the welding process between two adjacent battery cells 20 and cancel the arrangement of the insulating sheet, thereby improving the space utilization rate in the battery pack and reducing the process difficulty. On the basis of the above structure, a plurality of battery packs sequentially arranged along the second direction are connected in series, and for the plurality of battery packs after being connected in series, a first pole column 21 and a second pole column 22 are respectively arranged at two ends of the plurality of battery packs, the first pole column 21 and the second pole column 22 are respectively positioned in different battery packs, the first pole column 21 and the second pole column 22 are respectively connected with a first electric connection terminal and a second electric connection terminal, so that all battery cells 20 in the battery pack are connected together, and the outside is charged and discharged through the first electric connection terminal and the second electric connection terminal.
In one embodiment of the electric vehicle of the present utility model, the electric vehicle includes the battery pack described in the above embodiment.
The electric vehicle in this embodiment refers to various vehicles that have a battery pack and can drive to walk according to the amount of electricity provided by the battery pack, and includes, but is not limited to, a pure electric vehicle, a plug-in hybrid electric vehicle, a non-plug-in hybrid electric vehicle, and the like.
The electric vehicle in this embodiment, which includes the above battery pack, naturally has the same beneficial effects as the above battery pack, and will not be described again.
It should be noted that in this document, relational terms such as "first" and "second" and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element.
The foregoing is only a specific embodiment of the utility model to enable those skilled in the art to understand or practice the utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A battery pack, comprising: the battery pack comprises a box body and N battery packs, wherein N is more than or equal to 2 and is an integer;
the box body comprises a mounting cavity for accommodating N battery packs;
n the group battery is arranged in proper order along the second direction, every the group battery includes a plurality of electric cores of arranging along first direction, every the electric core include the casing with set up in first utmost point post and the second post of casing both sides in same in the group battery, adjacent two in the electric core, one the first utmost point post of electric core is connected with another the second post of electric core to make adjacent two the electric core electricity is connected.
2. The battery pack of claim 1, wherein the first pole comprises a first top surface and the second pole comprises a second top surface, the first top surface being bonded against the second top surface and welded thereto.
3. The battery pack according to claim 1, wherein the first pole comprises a first top surface, the second pole comprises a second top surface, a first protruding portion is arranged on the first top surface, a first recessed portion is arranged on the second top surface corresponding to the protruding portion in position, and the protruding portion is inserted into the recessed portion.
4. The battery pack according to claim 1, wherein the first pole comprises a first top surface, the second pole comprises a second top surface, the surface area of the second top surface is larger than the surface area of the first top surface, a second concave portion is arranged on the second top surface corresponding to the position of the first top surface, and the first pole is inserted into the second concave portion.
5. The battery pack according to claim 1, wherein a cooling plate is provided between two adjacent battery packs.
6. The battery pack of claim 5, wherein a heat conductive gel is disposed between the cooling plate and the cell to which it is connected.
7. The battery pack according to claim 5, wherein both end portions of the cooling plate in the first direction have an extension portion and a cutout portion juxtaposed with the extension portion, the extension portion being fixedly connected with the case;
the cooling plate is internally provided with a refrigerant pipeline, and the refrigerant pipeline is communicated with an external pipeline at the notch part.
8. The battery pack according to claim 7, wherein the case includes a first electric connection terminal and a second electric connection terminal, and any adjacent two of the N battery packs are arranged in series at the notch portion to connect the N battery packs in series in order;
in the N battery packs, according to a second direction, the first pole of one end of the battery pack in the first direction, which is arranged in the first order, is electrically connected with the first electric connection terminal, and the second pole of one end of the battery pack in the first direction, which is arranged in the nth order, is electrically connected with the second electric connection terminal.
9. The battery pack of any one of claims 1-8, wherein each cell has an explosion-proof valve disposed on a bottom side of the cell.
10. An electric vehicle, characterized in that it comprises a battery pack according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320545259.9U CN219350576U (en) | 2023-03-15 | 2023-03-15 | Battery pack and electric vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320545259.9U CN219350576U (en) | 2023-03-15 | 2023-03-15 | Battery pack and electric vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219350576U true CN219350576U (en) | 2023-07-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320545259.9U Active CN219350576U (en) | 2023-03-15 | 2023-03-15 | Battery pack and electric vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219350576U (en) |
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2023
- 2023-03-15 CN CN202320545259.9U patent/CN219350576U/en active Active
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| CP03 | Change of name, title or address |
Address after: 518000 1-2 Floor, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen City, Guangdong Province Patentee after: Xinwangda Power Technology Co.,Ltd. Address before: 518132 1-2/F, Building A, Xinwangda Industrial Park, No. 18 Tangjianan Road, Gongming Street, Guangming New District, Shenzhen, Guangdong Province Patentee before: SUNWODA ELECTRIC VEHICLE BATTERY Co.,Ltd. |
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| CP03 | Change of name, title or address |