CN115621677B

CN115621677B - Sampling structure, battery and vehicle

Info

Publication number: CN115621677B
Application number: CN202211633948.1A
Authority: CN
Inventors: 陈明文; 林水杉; 黄建; 曹东奎
Original assignee: BYD Co Ltd
Current assignee: BYD Co Ltd
Priority date: 2022-12-19
Filing date: 2022-12-19
Publication date: 2023-10-17
Anticipated expiration: 2042-12-19
Also published as: CN115621677A

Abstract

The invention discloses a sampling structure and a battery and a vehicle with the same. According to the sampling structure provided by the embodiment of the invention, the sampling structure can be inserted into the battery cell group for sampling, so that the sampling efficiency can be optimized, and the space utilization rate can be improved.

Description

Sampling structure, battery and vehicle

Technical Field

The invention relates to the technical field of batteries, in particular to a sampling structure, a battery with the sampling structure and a vehicle.

Background

With the continuous popularization of new energy vehicles, the use requirements of power batteries in the new energy vehicles become higher and higher. In the related art battery, a single string of battery cells is generally adopted, no middle sampling point exists, and the sampling structure is simpler.

In order to improve the energy density and the contact capability of the battery, a plurality of strings of battery cells are provided in the related art, however, in the plurality of strings of battery cells, the battery cells are difficult to sample signals, which is not beneficial to the stability of the use of the battery.

Disclosure of Invention

The invention aims to provide a sampling structure which can be inserted into a battery cell group to sample, so that the sampling efficiency can be optimized, and the space utilization rate can be improved.

Another object of the present invention is to provide a battery comprising the aforementioned sampling structure.

It is a further object of the present invention to provide a vehicle comprising the aforementioned battery or sampling structure.

The sampling structure comprises a sampling plate, wherein the sampling plate comprises a main body part and a plurality of sampling parts, the sampling parts are connected with the main body part, and the sampling parts are used for being inserted into a battery cell group to sample.

According to the sampling structure provided by the embodiment of the invention, the sampling structure can be inserted into the battery cell group for sampling, so that the sampling efficiency can be optimized, and the space utilization rate can be improved.

In addition, the sampling structure according to the above embodiment of the present invention may further have the following additional technical features:

optionally, the main body portion extends along a first direction, the sampling portion extends along a second direction, and the plurality of sampling portions are arranged along the first direction and located on the same side of the main body portion, and the first direction is perpendicular to the second direction.

Optionally, grooves are formed between adjacent sampling parts, and the grooves are used for fixing the sampling plate to a battery.

Optionally, the sampling part has at least three sampling points for electrically connecting the positive and/or negative poles of adjacent cells in the cell group.

Optionally, the at least three sampling points are arranged along the first direction.

Optionally, the at least three sampling points include a first sampling point, a second sampling point and a third sampling point, the first sampling point is connected with a side end of the sampling portion, and the second sampling point and the third sampling point are respectively connected with two opposite sides of the sampling portion.

Optionally, the sampling plate is sheet-shaped.

Optionally, in the first direction, a width dimension of the sampling portion is smaller than a width dimension of the battery cell.

Optionally, the sampling portion is configured as a triangle, rectangle, or sector.

A battery according to an embodiment of the present invention includes: the battery cell group sampling device comprises a plurality of battery cell groups and the sampling structure, wherein a plurality of sampling parts correspond to the battery cell groups, and the sampling parts are inserted into the corresponding battery cell groups for sampling.

According to the battery provided by the embodiment of the invention, the sampling effect of the battery can be improved by applying the sampling structure to the battery, and the battery structure is facilitated to be simplified.

Optionally, the battery further includes a sampling member connected to the sampling portion and configured to be electrically connected to the battery cell group, and a width dimension of the sampling portion is greater than a width dimension of the sampling member.

Optionally, the sampling member includes a plurality of sampling members, and a maximum distance between the plurality of sampling members along a length direction of the cell is not greater than 30mm.

Optionally, the electric core group includes first electric core, second electric core and connect in first electric core with compound utmost point post between the second electric core, compound utmost point post with corresponding sampling portion electricity is connected.

Optionally, the electric core group further includes a first polar post, the first polar post is connected with the first electric core, and the first polar post and the composite polar post are arranged at the same end of the first electric core, and the first polar post is electrically connected with the corresponding sampling part.

Optionally, the battery cell group further includes a second pole, the second pole is connected with the second battery cell, and the second pole and the composite pole are disposed at the same end of the second battery cell, and the second pole is electrically connected with the corresponding sampling portion.

Optionally, the battery further comprises: the fixed bottom plate is connected with the battery cell group, a first positioning groove is formed in the fixed bottom plate, and one side of the sampling plate is embedded into the first positioning groove.

Optionally, the battery further comprises: the battery cell group is arranged in the shell, and a second positioning groove for fixing the sampling plate is formed in the shell.

Optionally, the plurality of sampling parts are respectively inserted into the corresponding battery cell groups, grooves are formed between the adjacent sampling parts, insulating partition plates are arranged on the battery cell groups, and the insulating partition plates are embedded into the grooves.

Optionally, the plurality of electric core groups are stacked, and in the direction of stacking of electric core groups, the both ends of insulating barrier set up constant head tank portion and location convex part respectively, adjacent insulating barrier on the electric core group passes through constant head tank portion with the cooperation of location convex part.

The vehicle according to the embodiment of the invention comprises the battery or the sampling structure.

The invention provides a sampling structure, a battery and a vehicle, wherein the sampling structure can be inserted into a battery cell group to sample, so that the voltage, current and charge and discharge conditions of each battery cell can be conveniently sampled, the charge and discharge conditions, the service conditions and the like of the battery can be conveniently and fully known, the stability of the battery can be effectively maintained, and the cruising ability, stability and safety of the vehicle with the battery are improved.

Drawings

Fig. 1 is a schematic view of a partial structure of a battery according to some embodiments of the present invention.

Fig. 2 is a schematic view of a partial structure of a battery according to some embodiments of the present invention (illustrating a manner of splicing a plurality of battery cells).

Fig. 3 is a cross-sectional view of a battery (illustrating how a sampling member mates with a sampling structure) in some embodiments of the present invention.

Fig. 4 is a cross-sectional view of a battery (illustrating how a stationary base plate mates with a sampling structure) in some embodiments of the present invention.

Fig. 5 is a schematic structural view of a fixing base plate according to some embodiments of the present invention.

Fig. 6 is a schematic diagram of a cell stack according to some embodiments of the invention.

Fig. 7 is a schematic view of a partial structure of a battery cell assembly according to some embodiments of the present invention (showing the first pole, the second pole, and the composite pole mated with a sampling member).

FIG. 8 is a schematic diagram of the structure of a sampling plate in some embodiments of the present invention.

Reference numerals:

100. a battery; 10. a cell group; 11. a first cell; 12. a second cell; 110. a composite pole; 111. a first pole; 121. a second post; 14. a sampling member; 15. a blocking rib; 16. a fixed bottom plate; 160. a first positioning groove; 161. an insulating frame; 162. a second blocking rib; 163. a third rib; 164. a first electrical connection; 165. a second electrical connection; 21. sampling plate; 211. a main body portion; 212. a sampling unit; 210. a groove; 213. an insulating separator; 2130. a positioning groove part; 2131. and positioning the convex part.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

Referring to fig. 1 to 8, a sampling structure according to an embodiment of the present invention includes a sampling plate 21, the sampling plate 21 may transmit an external signal, the sampling plate 21 includes a main body 211 and a plurality of sampling parts 212, the plurality of sampling parts 212 are connected to the main body 211, and the sampling parts 212 are used to be inserted into the battery cell group 10 for sampling. That is, the plurality of sampling portions 212 may be inserted into the plurality of battery cell groups 10 to sample, so that voltages or other data of the plurality of battery cell groups 10 may be collected simultaneously, and the plurality of sampling portions 212 may be connected to the main body 211, so that the plurality of sampling portions 212 may be collected into the plurality of sampling portions 212, which is beneficial to simplifying the structure and facilitating the spatial arrangement.

According to the sampling structure provided by the embodiment of the invention, the sampling structure can be inserted into the battery cell group 10 to sample, so that the sampling efficiency can be optimized, and the space utilization rate can be improved. The plurality of sampling portions 212 can sample the plurality of battery cell groups 10 at the same time, and are suitable for being integrated on the main body portion 211, so as to facilitate simplifying the structure of the battery 100 and facilitating the spatial arrangement.

In addition, the sampling part 212 of the present invention is inserted into the cell stack 10, so that the space in the cell stack 10, particularly the space occupied by the composite electrode when two cells are electrically connected, can be fully utilized, and the space utilization rate of the battery 100 having the sampling structure can be improved while the cell stack 10 is conveniently sampled, thereby improving the energy density and stability of the battery 100. In addition, the sampling portion 212 is inserted into the cell group 10 to sample, so that the distance from the sampling point to the sampling plate 21 can be shortened, the influence of the external environment on the cell sampling signal can be effectively reduced by utilizing the protection of the cell group 10, and the influence of the sampling signal on the external environment can be avoided.

In some embodiments of the present invention, the plurality of sampled lines may be distributed individually, or the plurality of sampled lines may be laid out on the main body 211.

In some embodiments of the present invention, referring to fig. 8, the sampling parts 212 may be disposed in a side-by-side arrangement on the main body 211, or the sampling parts 212 may be disposed in a staggered arrangement; the sampling parts 212 may be arranged on different sides of the main body part 211, etc., and the specific connection form of the sampling parts 212 and the main body part 211 is not limited in the present invention, and the above description is only some embodiments of the present invention.

Referring to fig. 8, in some embodiments of the present invention, the body portion 211 extends in a first direction, the sampling portion 212 extends in a second direction, and the plurality of sampling portions 212 are arranged in the first direction, the first direction being perpendicular to the second direction. In other words, the plurality of sampling portions 212 are arranged along the extending direction of the main body portion 211, so that the number of the sampling portions 212 arranged on the main body portion 211 can be increased, which is advantageous for spatial arrangement.

In addition, the plurality of sampling units 212 may be disposed on the same side of the main body 211, that is, the plurality of sampling units 212 may be disposed side by side, so that the sampling units 212 may be directly inserted into the battery cell group 10 to perform sampling. For example, after the plurality of battery cells 10 are connected, the sampling structure may be inserted into the battery 100, and the plurality of sampling portions 212 are synchronously connected with the plurality of battery cells 10, so as to facilitate manufacturing and assembly.

Of course, the actual use situation can be different; to adjust the installation position of the sampling portion 212, for example, the sampling portion 212 may be provided on both opposite sides of the main body portion 211.

It should be noted that, as shown in fig. 2 and fig. 4, the first direction may be a thickness direction of the battery cell group 10, i.e. a front-to-back direction in the drawing, and the second direction may be a width direction of the battery cell group 10, i.e. an up-to-down direction in fig. 4, so that the sampling structure may extend between the battery cells, so as to facilitate sampling, and facilitate making full use of a gap between the battery cells, and improve a space utilization rate. In addition, there may be a third direction perpendicular to the first direction and the second direction, respectively, and the third direction may be a length direction of the cell group 10, i.e., a left-right direction in fig. 4.

Referring to fig. 3 and 8, in some embodiments of the present invention, a groove 210 is formed between adjacent sampling parts 212, and an insulating spacer 213 on a cell may be inserted into the groove 210 during installation of the sampling structure, so that positioning of the sampling structure is achieved by cooperation of the groove 210 and the insulating spacer 213. Meanwhile, insulation between adjacent sampling parts 212 can be realized through the insulating partition plates 213 inserted into the grooves 210, so that short circuit between the sampling parts 212 can be avoided, signal interference between the adjacent sampling parts 212 can be avoided, and the like.

Of course, the sides of adjacent sampling portions 212 may be directly connected together in the present invention, that is, the grooves 210 may not be provided between the adjacent sampling portions 212.

In some embodiments of the present invention, sampling portion 212 has at least three sampling points for electrically connecting the positive and/or negative poles of adjacent cells in cell stack 10. Specifically, after the sampling portion 212 is inserted into the cell group 10, the sampling portion 212 may be located between two adjacent cells in the cell group 10, so three sampling points set on the sampling portion 212 may be used to connect the positive electrode in one cell, the negative electrode in one cell, and the composite electrode connected in series between the adjacent cells, so as to facilitate improving the sampling effect. Of course, more sampling points may be provided on the sampling unit 212 according to actual situations, so as to improve the sampling effect.

Specifically, the battery cell group 10 may include a first battery cell 11 and a second battery cell 12, where one end of the first battery cell 11 is provided with a first positive electrode and a first negative electrode; one end of the second battery cell 12 is provided with a second positive electrode and a second negative electrode, wherein the battery cell group 10 needs the first positive electrode of the first battery cell 11 to be electrically connected with the first negative electrode of the second battery cell 12, so that the first positive electrode and the second negative electrode can be combined to form a composite electrode, meanwhile, the first battery cell 11 is also provided with the first negative electrode, the second battery cell 12 is provided with the second positive electrode, and at the moment, the second positive electrode, the first negative electrode and the composite electrode are respectively connected with the sampling part 212, and therefore, three sampling points can be arranged on the sampling part 212 to connect the second positive electrode, the first negative electrode and the composite electrode. In addition, for example, the first positive electrode and the first negative electrode of the first battery cell 11, and the second positive electrode and the second negative electrode of the second battery cell 12 need to be connected to the sampling plate 21, and four sampling points may be disposed on the sampling portion 212 to connect the electrodes of the first battery cell 11 and the second battery cell 12, respectively. In addition, the sampling unit 212 of the present invention may be provided with four or more sampling points, which may be adjusted according to actual sampling requirements.

In some embodiments of the present invention, at least three sampling points are arranged along the first direction, so that the sampling points can be conveniently connected with the positive electrode and/or the negative electrode of the battery core or can be conveniently connected with the sampling contact or the sampling switching structure, which is beneficial to shortening the connection distance, simplifying the structure, conveniently ensuring the insulation between different sampling points, and improving the safety and stability of the battery 100 or the sampling structure.

In some embodiments of the present invention, the at least three sampling points include a first sampling point, a second sampling point and a third sampling point, the first sampling point being connected to a side end of the sampling part 212, the second sampling point and the third sampling point being respectively connected to opposite sides of the sampling part 212. Thereby, the electrical isolation between the first sampling point and the second sampling point can be conveniently realized, the connection of the switching piece is convenient, and the stability and the safety of the battery 100 are improved.

Specifically, as described above with reference to fig. 1 and fig. 6, the battery cell group 10 may include a first battery cell 11 and a second battery cell 12, where a first positive electrode and a first negative electrode are disposed at an end of the first battery cell 11, a second positive electrode and a second negative electrode are disposed at an end of the second battery cell 12, the first battery cell 11 and the second battery cell 12 are connected, and the first positive electrode and the second negative electrode are electrically conducted, where an extension size of the first negative electrode relative to the first battery cell 11 is smaller than an extension size of the first positive electrode, and an extension size of the second positive electrode relative to the second battery cell 12 is smaller than an extension size of the second negative electrode, so as to facilitate connection between the first positive electrode and the second negative electrode, improve stability of battery cell connection in the battery cell group 10, and at the same time, lead a first switching tab between the first positive electrode and the second negative electrode, which may be used to connect the first sampling point; the first negative electrode and the second positive electrode can be respectively arranged on two opposite sides of the first switching sheet and respectively used for connecting the second sampling point and the third sampling point, and in addition, the stability of the battery cell can be ensured.

In some embodiments of the present invention, as shown in fig. 8, the sampling plate 21 is in a sheet shape, so as to be inserted between two adjacent cells in the cell group 10, so that the space in the cell group 10 can be fully utilized, which is beneficial to improving the space utilization and reducing the size of the battery 100.

In some embodiments of the present invention, in conjunction with fig. 1 and 3, the width dimension of the sampling portion 212 is smaller than the width dimension of the cell in the first direction, which facilitates spatial arrangement, and may prevent the sampling portion 212 from being exposed from the cell for ease of management.

In some embodiments of the present invention, sampling portion 212 is configured as a triangle, rectangle, or sector, wherein the sector may include a semicircle, a semi-ellipse, or the like. Specifically, the sampling part 212 may be configured according to the actual situation, for example, the shape of the battery cell, and according to the sampling part 212 of the embodiment of the present invention, the sampling part 212 is configured in a rectangular shape to be adapted to match the shape of the battery cell.

Referring to fig. 1 to 8, a battery 100 according to an embodiment of the present invention includes: the plurality of cell groups 10 and the sampling structure described above, the plurality of sampling portions 212 correspond to the plurality of cell groups 10, and the sampling portions 212 are inserted into the corresponding cell groups 10 to sample, so as to collect the voltage or various data of the cell groups 10. Specifically, the sampling structure includes a plurality of sampling portions 212, and the plurality of sampling portions 212 may be disposed corresponding to the plurality of battery cell groups 10, so that the plurality of sampling portions 212 are respectively inserted into the plurality of battery cell groups 10 to realize simultaneous sampling of the plurality of battery cell groups 10. Therefore, the sampling point can be arranged at the middle part of the battery cell group 10, so that the sampling part 212 can be integrated on the battery cell, which is beneficial to shortening the sampling distance and facilitating the spatial arrangement. In addition, the plurality of sampling parts 212 may be integrated on the sampling structure, the sampling structure may be simplified, and management may be facilitated.

According to the battery 100 of the embodiment of the invention, by applying the aforementioned sampling structure to the battery 100, the sampling effect of the battery 100 can be improved, and the structure of the battery 100 can be simplified.

Referring to fig. 3 and 7, in some embodiments of the present invention, the battery 100 further includes a sampling member 14, and the sampling member 14 is connected to the sampling portion 212 and is used for electrically connecting to the battery cell pack 10, so that the sampling portion 212 samples the battery 100 through the sampling member 14, wherein the width dimension of the sampling portion 212 is greater than the width dimension of the sampling member 14, so that the sampling portion 212 can cover the sampling member 14, so that the electrical connection between the sampling member 14 and the sampling portion 212 is facilitated, and the spatial arrangement and the management are facilitated.

According to the battery 100 of the embodiment of the invention, the sampling part 212 can enter the middle of two battery cells of the battery cell group 10 to sample, thereby fully utilizing the gap in the battery cell group 10 and avoiding arranging the sampling part 212 at the end part so as to avoid increasing the length of the battery 100.

Referring to fig. 3, in some embodiments of the present invention, the plurality of sampling members 14 are included, and the maximum distance between the plurality of sampling members 14 along the length direction of the battery cell is not greater than 30mm (millimeters), so that the plurality of sampling members 14 have a gap therebetween, which can avoid a short circuit phenomenon occurring in contact between the two sampling members 14, and facilitate control of the size of the battery 100, improve the safety of the battery 100, and facilitate spatial arrangement. Specifically, a safety distance may be provided between the plurality of sampling members 14, which may ensure the stability and safety of the operation of the plurality of sampling members 14, and may also prevent the size of the battery 100 from being increased due to an excessively large interval between the plurality of sampling members 14. More specifically, the safety distance may be between 3mm and 30mm to avoid shorting and not increase the size of battery 100. Of course, the safety distance may be increased according to the actual situation, and the present invention is not limited thereto. For example, an insulating structure may be provided between the plurality of sampling parts 212 to space the plurality of sampling parts 212 apart and to provide an insulating effect.

Referring to fig. 6 and 7, in some embodiments of the present invention, the battery cell group 10 includes a first battery cell 11, a second battery cell 12, and a composite electrode post 110 connected between the first battery cell 11 and the second battery cell 12, where the composite electrode post 110 may electrically connect the first battery cell 11 and the second battery cell 12, and the composite electrode post 110 is electrically connected to a corresponding sampling portion 212, so that sampling of the first battery cell 11 and the second battery cell 12 may be achieved.

In some embodiments of the present invention, the battery cell group 10 further includes a first electrode column 111, the first electrode column 111 is connected to the first battery cell 11, and the first electrode column 111 and the composite electrode column 110 are disposed at the same end of the first battery cell 11, and the first electrode column 111 is electrically connected to the corresponding sampling portion 212, so that the sampling portion 212 can collect data of the first electrode column 111, and the first electrode column 111 and the composite electrode column 110 are disposed at the same end, so that the sampling portion 212 can sample simultaneously, thereby facilitating simplification of the structure of the sampling portion 212 and shortening of the sampling distance.

In some embodiments of the present invention, the battery cell set 10 further includes a second pole 121, where the second pole 121 is connected to the second battery cell 12, and the second pole 121 and the composite pole 110 are disposed at the same end of the second battery cell 12, and the second pole 121 is electrically connected to the corresponding sampling portion 212, so that the sampling portion 212 can collect data of the second pole 121, and the second pole 121 and the composite pole 110 are disposed at the same end, so that the sampling portion 212 can sample simultaneously, thereby facilitating simplification of the structure of the sampling portion 212 and shortening of the sampling distance.

Specifically, the first pole 111 and the second pole 121 are respectively located at two opposite sides of the composite pole 110, and when the sampling portion 212 is inserted between the first battery cell 11 and the second battery cell 12, voltages or other data of the first pole 111, the second pole 121 and the composite pole 110 can be collected simultaneously to obtain voltages or other data of the first battery cell 11, the second battery cell 12 or the battery cell group 10, so as to be suitable for timely adjustment when the data is abnormal, thereby improving stability and safety of the operation of the battery 100. More specifically, the first pole 111, the second pole 121 and the composite pole 110 are respectively connected with the sampling member 14, where the sampling member 14 is adapted to extend toward the direction of the sampling portion 212 to draw out a contact, so as to be suitable for the sampling member 14 to be electrically connected with the sampling portion 212, which is beneficial to simplifying the structure of the sampling structure, and reducing the cost without changing the structure of the electric core. Specifically, one cell may be provided with three point linkage points, two of which are overcurrent, one for sampling, wherein the sampling member 14 may be a sampling switch tab, which may lead down to the contact.

According to the battery 100 of the embodiment of the present invention, one of the first and second poles 111 and 121 is a positive pole and the other is a negative pole. Alternatively, the sampling structure may be made of a metal material to enhance the conductive effect, for example, may be made of aluminum. Further, the first pole 111 or the second pole 121 may be made of a metal material, for example, the positive pole may be made of aluminum, the negative pole may be made of copper, or the same material such as nickel, iron, etc.

Referring to fig. 7, in some embodiments of the present invention, the battery 100 further includes a first rib 15 disposed on at least one of the first cell 11 and the second cell 12, where the first rib 15 may be used for limiting and electrically isolating between different cells, so as to facilitate improving the safety of the battery 100. Alternatively, the ribs 15 may be welded to the cells.

Referring to fig. 1 and 4, in some embodiments of the present invention, the battery 100 further includes: the fixed bottom plate 16, fixed bottom plate 16 links to each other with electric core group 10, is equipped with first constant head tank 160 on the fixed bottom plate 16, and one side of sampling board 21 is embedded in first constant head tank 160 to fixed sampling board 21 improves the structural stability after the sampling board 21 assembly and does benefit to spatial arrangement, does benefit to the reduction in cell 100 size. That is, the fixing base plate 16 can play a role of fixing the cell group 10, and meanwhile, a groove suitable for fixing and limiting the sampling plate 21 can be formed on the fixing base plate 16, so that the sampling plate 21 can be prevented from shaking, and the connection stability can be improved. Further, a fixing glue may be disposed in the first positioning groove 160, for example, glue is injected into the first positioning groove 160 to improve the positioning effect.

Referring to fig. 1 and 5, according to the battery 100 of the embodiment of the present invention, the fixing base plate 16 includes an insulation frame 161, the insulation frame 161 is connected to the battery cell group 10 and to one side of the sampling plate 21, and a first positioning groove 160 may be formed on the insulation frame 161. The insulating frame 161 is provided with a first electrical connection portion 164 and a second electrical connection portion 165, the second electrical connection portion 165 and the second electrical connection portion 165 are disposed on opposite sides of the insulating frame 161, and the first electrical connection portion 164 and the second electrical connection portion 165 can be used to achieve electrical connection between the fixed base plate 16 and the electric core or the sampling plate 21.

Specifically, referring to fig. 5, the insulating frame 161 includes a plurality of second ribs 162 and a plurality of third ribs 163, the plurality of second ribs 162 and the plurality of third ribs 163 are oppositely disposed in the left-right direction, and a side plate of the sampling plate 21 is adapted to be inserted into the first positioning groove 160 between the second ribs 162 and the third ribs 163. The second blocking ribs 162 and the third blocking ribs 163 are respectively arranged at intervals along the front-back direction or the stacking direction of the battery cell group 10, a first electric connection part 164 is arranged between two adjacent second blocking ribs 162, a second electric connection part 165 is arranged between two adjacent third blocking ribs 163, the blocking ribs can be used for isolating the electric connection parts so as to ensure electric insulation, and the first electric connection parts 164 respectively correspond to the battery cell group 10; the plurality of second electrical connection parts 165 correspond to the plurality of battery cell groups 10, respectively.

Alternatively, the first and second electrical connection portions 164 and 165 may be metal connection points to enhance the electrical connection effect.

In some embodiments of the present invention, the battery 100 further includes a housing, where the battery cell 10 is placed, so as to protect the battery cell 10, improve the structural stability of the battery 100, and provide a second positioning slot for fixing the sampling plate 21 on the housing. That is, the second positioning groove suitable for positioning the sampling plate 21 can be directly formed on the housing, so that the housing can not only play a role in protecting the cell group 10, but also can position and fix the sampling plate 21, thereby facilitating the simplification of the structure. Alternatively, the housing may be an aluminum housing.

Referring to fig. 3, in some embodiments of the present invention, a plurality of sampling portions 212 are respectively inserted into the corresponding cell groups 10, and grooves 210 are disposed between adjacent sampling portions 212, and insulating spacers 213 are disposed on the cell groups 10, and the insulating spacers 213 are embedded into the grooves 210. Specifically, the grooves 210 disposed between the adjacent sampling portions 212 can space the sampling portions 212 apart to avoid shorting, and further, insulating spacers 213 can be disposed in the grooves 210 to electrically isolate the adjacent sampling portions 212, so as to improve the insulation effect and the sampling effect.

The sampling structure and the battery 100 according to the embodiment of the present invention, the insulating structure such as the insulating spacer 213 or the baffle 15 may be plastic or ceramic, and the present invention is not limited thereto.

Still further, in some embodiments of the present invention, a plurality of the battery cell groups 10 are stacked, which is advantageous for improving the compactness and reducing the size of the battery 100, and the positioning groove portions 2130 and the positioning protrusion 2131 are respectively provided at both ends of the insulating spacer 213 in the stacking direction of the battery cell groups 10, and the insulating spacer 213 on the adjacent battery cell groups 10 is matched with the positioning groove portions 2130 and the positioning protrusion 2131, so as to improve the compactness and the structural stability. Specifically, the sampling portions 212 can be inserted into the battery cell group 10, the sampling portions 212 are correspondingly matched with the battery cell group 10, the insulating partition plates 213 are arranged in the grooves 210 between the adjacent sampling portions 212, the insulating partition plates 213 not only can play an insulating role between the adjacent sampling portions 212 and the battery cell group 10, but also can play a limiting role between the adjacent sampling portions 212 and the battery cell group 10, so that the stability of the matching of the sampling structure and the battery 100 is improved, and the positioning is facilitated during the assembly. Specifically, during assembly, the plurality of battery cell groups 10 are stacked, in the stacking direction, the insulation separators 213 are respectively disposed in the plurality of grooves 210 between the plurality of sampling portions 212, and the positioning groove portion 2130 of the previous insulation separator 213 is matched with the positioning protrusion 2131 of the next insulation separator 213, that is, the positioning protrusion 2131 may be embedded into the positioning groove portion 2130, so as to splice the plurality of insulation separators 213 together, which is beneficial to improving the structural stability of the sampling structure and the structural stability of the cooperation of the plurality of battery cell groups 10, and is beneficial to improving the compactness of the battery 100.

According to the vehicle provided by the embodiment of the invention, the battery 100 is included, and the battery 100 is applied to the vehicle, so that the sampling efficiency of the battery 100 can be improved, the size of the battery 100 can be reduced, and the functionality of the vehicle can be improved.

According to the vehicle provided by the embodiment of the invention, the sampling structure is adopted on the vehicle, so that the sampling efficiency can be optimized, the functionality of the battery 100 can be improved, the size of the battery 100 can be reduced, and the space arrangement can be facilitated.

In the description of the present invention, it should be understood that the terms "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. A battery, comprising:

the battery cell group comprises a first battery cell, a second battery cell, a composite electrode column connected between the first battery cell and the second battery cell, and a first electrode column connected with the first battery cell and arranged at the same end of the first battery cell;

the sampling structure comprises a sampling plate, the sampling plate comprises a main body part and a plurality of sampling parts, the sampling parts are connected with the main body part, the sampling parts are used for being inserted into the battery cell groups for sampling, the sampling parts correspond to the battery cell groups, the sampling parts are inserted between the first battery cells and the second battery cells of the corresponding battery cell groups for sampling,

the composite pole is electrically connected with the corresponding sampling part, the first pole is electrically connected with the corresponding sampling part, the sampling part is provided with at least three sampling points, one of the three sampling points is electrically connected with the first pole, and the other of the three sampling points is electrically connected with the composite pole.

2. The battery of claim 1, wherein the body portion extends in a first direction, the sampling portion extends in a second direction, and a plurality of the sampling portions are arranged in the first direction and on the same side of the body portion, the first direction being perpendicular to the second direction.

3. The battery of claim 2, wherein grooves are formed between adjacent ones of the sampling portions, the grooves being for securing the sampling plate to the battery.

4. The battery of claim 2, wherein the at least three sampling points are arranged along the first direction.

5. The battery of claim 1, wherein the at least three sampling points comprise a first sampling point, a second sampling point, and a third sampling point, the first sampling point being connected to a side end of the sampling portion, the second sampling point and the third sampling point being respectively connected to opposite sides of the sampling portion.

6. The battery of any one of claims 1-5, wherein the sampling plate is sheet-like.

7. The battery of claim 2, 3 or 4, wherein the sampling portion has a width dimension in the first direction that is smaller than a width dimension of the cell.

8. The battery according to any one of claims 1 to 5, wherein the sampling portion is configured in a triangle, a rectangle, or a sector.

9. The battery of any of claims 1-5, further comprising a sampling member coupled to the sampling portion and configured to be electrically coupled to the cell stack, the sampling portion having a width dimension greater than a width dimension of the sampling member.

10. The battery of claim 9, wherein the sampling members comprise a plurality of sampling members, and a maximum distance between the plurality of sampling members along a length of the cell is no greater than 30mm.

11. The battery of any one of claims 1-5, wherein the cell stack further comprises a second post connected to the second cell and disposed at a same end of the second cell as the composite post, the second post being electrically connected to the corresponding sampling portion, wherein one of three sampling points is electrically connected to the first post, another of three sampling points is electrically connected to the composite post, and a remaining one of three sampling points is electrically connected to the second post.

12. The battery of any one of claims 1-5, wherein the battery further comprises:

the fixed bottom plate is connected with the battery cell group, a first positioning groove is formed in the fixed bottom plate, and one side of the sampling plate is embedded into the first positioning groove.

13. The battery of any one of claims 1-5, wherein the battery further comprises:

the battery cell group is arranged in the shell, and a second positioning groove for fixing the sampling plate is formed in the shell.

14. The battery according to any one of claims 1 to 5, wherein a plurality of the sampling portions are inserted into the corresponding cell groups, grooves are formed between the adjacent sampling portions, insulating separators are arranged on the cell groups, and the insulating separators are embedded into the grooves.

15. The battery according to claim 14, wherein a plurality of the cell groups are stacked, and in the stacking direction of the cell groups, positioning groove portions and positioning convex portions are provided at both ends of the insulating separator respectively, and the insulating separators on adjacent cell groups are fitted through the positioning groove portions and the positioning convex portions.

16. A vehicle characterized by comprising a battery according to any one of claims 1-15.