Batteries and vehicles

Abstract

This application provides a battery and a vehicle. The battery includes: a cell pack comprising a plurality of cells arranged and connected in series along a first direction, the plurality of cells including a first cell and a second cell, the first cell and the second cell being located at the outermost ends of the cell pack along the first direction; the first cell including a first end face away from the second cell along the first direction, the second cell including a second end face away from the first cell along the first direction, the first end face having a first connection end, the second end face having a second connection end, the polarities of the first connection end and the second connection end being opposite; a sampling unit electrically connected to the first connection end and the second connection end respectively; wherein the first end face has a first sampling end, the first sampling end having a polarity opposite to the first connection end, and the first sampling end being electrically connected to the sampling unit; and / or, the second end face has a second sampling end, the second sampling end having a polarity opposite to the second connection end, and the second sampling end being electrically connected to the sampling unit.

Description

Technical Field

[0001] This utility model relates to the field of battery technology, and in particular to a battery and a vehicle. Background Technology

[0002] Currently, some batteries utilize multiple cells connected in series to save space required for cell connection, sampling, and assembly, thereby improving the overall volume utilization rate of the battery and contributing to increased overall battery range within the same volume. When sampling batteries with multiple cells connected in series, to improve sampling accuracy, related technologies typically weld sampling harnesses at the connection points between two adjacent cells. However, this welding process is not only technically challenging to implement but also affects the force transmission mode of the cells within the battery, leading to reduced battery reliability. Utility Model Content

[0003] This application provides a battery and a vehicle that can effectively sample a battery with multiple series-connected cells while reducing the impact of the sampling process on battery reliability, thereby improving the safety and stability of the battery during long-term operation.

[0004] This application provides a battery, comprising: a cell assembly including a plurality of cells arranged and connected in series along a first direction, the plurality of cells including a first cell and a second cell, the first cell and the second cell being located at the outermost ends of the cell assembly along the first direction; the first cell including a first end face away from the second cell along the first direction, the second cell including a second end face away from the first cell along the first direction, the first end face having a first connection end, the second end face having a second connection end, the polarities of the first connection end and the second connection end being opposite; a sampling unit electrically connected to the first connection end and the second connection end respectively; wherein, the first end face has a first sampling end, the first sampling end having a polarity opposite to the first connection end, and the first sampling end being electrically connected to the sampling unit; and / or, the second end face has a second sampling end, the second sampling end having a polarity opposite to the second connection end, and the second sampling end being electrically connected to the sampling unit.

[0005] Optionally, the first connection terminal includes a first overcurrent terminal; and / or, the second connection terminal includes a second overcurrent terminal; and / or, the first sampling terminal includes a first sampling terminal; and / or, the second sampling terminal includes a second sampling terminal.

[0006] Optionally, the first end face is provided with a first sampling end, and the sampling unit is disposed along the first direction on the side close to the first end face; or, the second end face is provided with a second sampling end, and the sampling unit is disposed along the first direction on the side close to the second end face.

[0007] Optionally, the first end face is provided with a first sampling end and the second end face is provided with a second sampling end, and the sampling unit is disposed along the first direction on either side close to the first end face or close to the second end face.

[0008] Optionally, the first end face is provided with a first sampling end, and the first battery cell includes a first tab, a second tab, and a third tab; wherein the first tab is connected to a first connection end; the second tab is connected to other adjacent battery cells of the first battery cell; the third tab is connected to the first sampling end; the polarities of the first tab and the second tab are opposite, and the polarities of the first tab and the third tab are also opposite; or, the second end face is provided with a second sampling end, and the second battery cell includes a fourth tab, a fifth tab, and a sixth tab; wherein the fourth tab is connected to a second connection end; the fifth tab is connected to other adjacent battery cells of the second battery cell; the sixth tab is connected to the second sampling end; the polarities of the fourth tab and the fifth tab are opposite, and the polarities of the fourth tab and the sixth tab are also opposite.

[0009] Optionally, the first end face is provided with a first sampling end, and the second end face is provided with a second sampling end; the first battery cell includes a first tab, a second tab, and a third tab; wherein, the first tab is connected to a first connection end; the second tab is connected to other adjacent battery cells of the first battery cell; the third tab is connected to the first sampling end; the polarities of the first tab and the second tab are opposite, and the polarities of the first tab and the third tab are opposite; the second battery cell includes a fourth tab, a fifth tab, and a sixth tab; wherein, the fourth tab is connected to a second connection end; the fifth tab is connected to other adjacent battery cells of the second battery cell; the sixth tab is connected to the second sampling end; the polarities of the fourth tab and the fifth tab are opposite, and the polarities of the fourth tab and the sixth tab are opposite.

[0010] Optionally, in the battery cell assembly, one of two adjacent battery cells is provided with a third connection terminal, and the other is provided with a fourth connection terminal; the third connection terminal and the fourth connection terminal are electrically connected.

[0011] Optionally, multiple cells within a cell group can be connected to adjacent cells via a shared terminal.

[0012] Optionally, there are multiple battery cell groups, and the first connection end and the second connection end of each battery cell group are connected to the sampling unit; wherein, when the first end face of the battery cell group is provided with a first sampling end, the first sampling end is electrically connected to the sampling unit; and / or, when the second end face of the battery cell group is provided with a second sampling end, the second sampling end is electrically connected to the sampling unit; and / or, when the first end face of the battery cell group is provided with a first sampling end and the second end face is provided with a second sampling end, both the first sampling end and the second sampling end are electrically connected to the sampling unit.

[0013] This application provides a vehicle including the aforementioned battery.

[0014] The battery and vehicle provided in this application have a first sampling end provided on a first end face at one end of the cell assembly, and / or a second sampling end provided on a second end face at the other end of the cell assembly, thereby enabling internal sampling of the cell assembly. This eliminates the need to weld sampling harnesses at the connection points between two cells in the cell assembly, achieving internal sampling of the cell assembly. This not only reduces manufacturing complexity but also minimizes the impact on the power transmission mode of the cell assembly. It allows for effective sampling of batteries with multiple series-connected cells while reducing the impact of the sampling process on battery reliability, thus improving the long-term safety and stability of the battery.

[0015] Meanwhile, since the first and second sampling ends are located at the ends of the battery cell assembly, the space required for the wiring harness arrangement is often small when connected to the sampling unit via a wiring harness. This has little impact on the internal layout of the battery, which helps to simplify the wiring harness layout and make the internal structure of the battery more compact, thereby improving the overall volume utilization of the battery. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the battery structure provided in one embodiment of this application;

[0017] Figure 2 This is a schematic diagram of the battery structure provided in another embodiment of this application;

[0018] Figure 3 This is a schematic diagram of the battery structure provided in another embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the battery structure provided in another embodiment of this application;

[0020] Figure 5 This is a schematic diagram of the battery structure provided in another embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the battery structure provided in another embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the battery structure provided in another embodiment of this application.

[0023] Figure Labels

[0024] 10: Cell assembly; 11: First cell; 110: First end face; 111: First connection end; 112: First sampling end; 1110: First overcurrent terminal; 1120: First sampling terminal; 12: Second cell; 120: Second end face; 121: Second connection end; 122: Second sampling end; 1210: Second overcurrent terminal; 1220: Second sampling terminal; 102: Common terminal; 13: Third cell; 20: Sampling unit. Detailed Implementation

[0025] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings.

[0026] Combination Figures 1 to 7 As shown, this application provides a battery.

[0027] The battery includes a cell assembly and a sampling unit 20. The cell assembly includes multiple cells arranged in series along a first direction. The multiple cells include a first cell 11 and a second cell 12, located at the outermost ends of the cell assembly along the first direction. The first cell 11 includes a first end face 110 away from the second cell 12 along the first direction, and the second cell 12 includes a second end face 120 away from the first cell 11 along the first direction. The first end face 110 has a first connection terminal 111, and the second end face 120 has a second connection terminal 121, with opposite polarities. The sampling unit 20 is electrically connected to the first connection terminal 111 and the second connection terminal 121. The first end face 110 is provided with a first sampling end 112, which has the opposite polarity to the first connection end 111 and is electrically connected to the sampling unit 20; and / or, the second end face 120 is provided with a second sampling end 122, which has the opposite polarity to the second connection end 121 and is electrically connected to the sampling unit 20. It should be noted that the dashed lines in the attached drawings only indicate that the two ends of the dashed line have the same polarity and do not represent actual connecting lines.

[0028] When a first sampling terminal 112 is provided on the first end face 110, the sampling unit 20 is connected to the first sampling terminal 112 and the first connection terminal 111 with opposite polarities on the first end face 110, forming a loop, which enables sampling of the first cell 11. Simultaneously, the sampling unit 20 is connected to the first connection terminal 111 on one side of the cell group and the second connection terminal 121 on the other side of the cell group. The sampling unit 20 forms a loop with the first connection terminal 111 and the second connection terminal 121 with opposite polarities, enabling sampling of the entire cell group formed in series. Based on the two sets of sampling results, the sampling results of other cells in the cell group besides the first cell 11 can be further obtained.

[0029] When a second sampling terminal 122 is provided on the second end face 120, the sampling unit 20 is connected to the second sampling terminal 122 and the second connection terminal 121 with opposite polarities on the second end face 120, forming a loop, which enables sampling of the second cell 12. Simultaneously, the sampling unit 20 is connected to the first connection terminal 111 on one side of the cell group and the second connection terminal 121 on the other side of the cell group. The sampling unit 20 forms a loop with the first connection terminal 111 and the second connection terminal 121 with opposite polarities, enabling sampling of the entire cell group formed in series. Based on the two sets of sampling results, the sampling results of other cells in the cell group besides the second cell 12 can be further obtained.

[0030] When a first sampling terminal 112 is provided on the first end face 110 and a second sampling terminal 122 is provided on the second end face 120, independent sampling of the first cell 11 and the second cell 12, as well as overall sampling of the entire cell group, can be achieved respectively. If there are other cells in the cell group besides the first cell 11 and the second cell 12, the overall sampling results of the other cells in the cell group besides the first cell 11 and the second cell 12 can be further obtained based on the three sets of sampling results.

[0031] Using the battery provided in this application embodiment, a first sampling terminal 112 is provided on the first end face 110 at one end of the cell assembly, and / or a second sampling terminal 122 is provided on the second end face 120 at the other end of the cell assembly, thereby realizing internal sampling of the cell assembly. In this way, internal sampling of the cell assembly can be achieved without welding sampling harnesses at the connection points between two cells in the cell assembly. This not only reduces manufacturing complexity but also minimizes the impact on the power transmission mode of the cell assembly. It allows for effective sampling of batteries with multiple series-connected cells while reducing the impact of the sampling process on battery reliability, thereby improving the safety and stability of the battery during long-term operation.

[0032] Meanwhile, since the first sampling end 112 and the second sampling end 122 are located at the ends of the battery cell assembly, the space required for the wiring harness arrangement is often small when connected to the sampling unit 20 via a wiring harness. This has little impact on the internal layout of the battery, which helps to simplify the wiring harness layout and make the internal structure of the battery more compact, thereby improving the overall volume utilization of the battery.

[0033] In some embodiments, the battery is used within a vehicle as a power battery to provide power for the vehicle's operation. In other embodiments, the battery may be another type of battery within the vehicle besides a power battery; or a battery for other devices besides the vehicle. This is not a limitation.

[0034] In some embodiments, the first direction is the length direction of each cell in the cell group. That is, the cells in the cell group are arranged along the length direction. In this way, the arrangement direction of each cell is consistent, which facilitates series connection between the cells and is beneficial to the packaging of the cell group. In addition, the arrangement along the length direction is also beneficial to the heat dissipation of each cell. In some embodiments, each cell is a blade cell. Setting the series-connected blade cells to be arranged along the length direction gives the cells a larger surface area in the length direction, thereby achieving good heat dissipation.

[0035] The first battery cell 11 includes a first battery cell 11 housing and a first electrode core disposed within the first battery cell 11 housing. A first connection end 111 is disposed within the first battery cell 11 housing and is directly or indirectly connected to the first electrode core. More specifically, the first battery cell 11 housing includes the aforementioned first end face 110, which is, for example, a battery cell cover. The second battery cell 12 includes a second battery cell 12 housing and a second electrode core disposed within the second battery cell 12 housing. A second connection end 121 is disposed within the second battery cell 12 housing and is directly or indirectly connected to the second electrode core. The second battery cell 12 housing includes the aforementioned second end face 120, which is, for example, a battery cell cover.

[0036] In some embodiments, the first connection terminal 111 includes a first overcurrent terminal 1110. The first overcurrent terminal 1110 helps ensure stable current transmission between the first cell 11 and the sampling unit 20, as well as between the first cell 11 and other external devices connected to it, reducing resistance losses during current transmission and thus improving the overall charging and discharging efficiency of the battery. The first overcurrent terminal 1110 also enhances the mechanical stability of the first cell 11 connection, reducing the risk of poor contact due to loose connections, thereby further improving the reliability and safety of the battery.

[0037] In some embodiments, the second connection terminal 121 includes a second overcurrent terminal 1210. The second overcurrent terminal 1210 helps ensure stable current transmission between the second cell 12 and the sampling unit 20, as well as between the second cell 12 and other external devices connected to it, reducing resistance losses during current transmission and thus improving the overall charging and discharging efficiency of the battery. The second overcurrent terminal 1210 also enhances the mechanical stability of the second cell 12 connection, reducing the risk of poor contact due to loose connections, thereby further improving the reliability and safety of the battery.

[0038] In some embodiments, the first sampling terminal 112 includes a first sampling terminal 1120. The use of a first sampling terminal 112 with a first sampling terminal 1120 helps to ensure stable current transmission between the sampling unit 20 and the first battery cell 11, thus ensuring the stability and reliability of the sampling process.

[0039] In some embodiments, the second sampling terminal 122 includes a second sampling terminal 1220. The first sampling terminal 112 adopting the form of a first sampling terminal 1120 helps to ensure stable current transmission between the sampling unit 20 and the first battery cell 11, thus ensuring the stability and reliability of the sampling process.

[0040] In some embodiments, the first end face 110 is provided with a first sampling end 112, and the sampling unit 20 is disposed along a first direction on the side close to the first end face 110. This makes the connection between the sampling unit 20 and the first sampling end 112 more compact, which helps to shorten the path length of the sampling signal transmission, thereby avoiding some potential interference and improving the stability and accuracy of the sampling signal. At the same time, it helps to reduce the complexity of the wiring layout, which not only reduces the risk of failure caused by complex wiring but also facilitates management and maintenance, improving the overall operational reliability of the battery.

[0041] In some embodiments, the second end face 120 is provided with a second sampling end 122, and the sampling unit 20 is disposed along the first direction on the side close to the second end face 120. This makes the connection between the sampling unit 20 and the first sampling end 112 more compact, which helps to shorten the path length of the sampling signal transmission, thereby avoiding some potential interference and improving the stability and accuracy of the sampling signal. At the same time, it helps to reduce the complexity of the wiring layout, which not only reduces the risk of failure caused by complex wiring but also facilitates management and maintenance, improving the overall operational reliability of the battery.

[0042] In some embodiments, the first end face 110 is provided with a first sampling end 112 and the second end face 120 is provided with a second sampling end 122, and the sampling unit 20 is disposed along a first direction on either side near the first end face 110 or near the second end face 120. In this way, the cell assembly and the sampling unit 20 are both disposed in the same direction, which helps to ensure the compactness of the connection between the sampling unit 20 and the first sampling end 112 or the second sampling end 122, thereby shortening the path length of the sampling signal transmission, avoiding some potential interference, and improving the stability and accuracy of the sampling signal. At the same time, it helps to reduce the complexity of the wiring layout, which not only reduces the risk of failure caused by complex wiring but also facilitates management and maintenance, improving the overall operational reliability of the battery.

[0043] In some embodiments, the first end face 110 is provided with a first sampling terminal 112, and the first battery cell 11 includes a first tab, a second tab, and a third tab. The first tab is connected to the first connection terminal 111, the second tab is connected to other adjacent battery cells of the first battery cell 11, and the third tab is connected to the first sampling terminal 112. The first tab and the second tab have opposite polarities, and the first tab and the third tab also have opposite polarities. Each battery cell includes a core, and communication between the core and the outside is achieved through the tabs. Unlike common battery cells that include one positive tab and one negative tab, the first battery cell 11 includes a first tab, a second tab, and a third tab, adapted to the provision of a first sampling terminal 112 on the first end face 110 of the first battery cell 11. The first tab and the third tab are connected to the first connection terminal 111 and the first sampling terminal 112, respectively, and the second tab is used to connect to other battery cells. If the battery pack contains only two cells, the first cell 11 and the second cell 12, then the second tab is used to connect to the second cell 12. If the battery pack also includes a third cell 13 disposed between the first cell 11 and the second cell 12, then the second tab is used to connect to the third cell 13. In this way, the first tab, the second tab, and the third tab ensure stable transmission of electrical signals.

[0044] In some embodiments, the second end face 120 is provided with a second sampling terminal 122, and the second battery cell 12 includes a fourth tab, a fifth tab, and a sixth tab. The fourth tab is connected to the second connection terminal 121, the fifth tab is connected to other adjacent battery cells of the second battery cell 12, and the sixth tab is connected to the second sampling terminal 122. The fourth and fifth tabs have opposite polarities. Corresponding to the second sampling terminal 122 on the second end face 120 of the second battery cell 12, the first battery cell 11 includes a fourth tab, a fifth tab, and a sixth tab. The fourth and sixth tabs are respectively connected to the second connection terminal 121 and the second sampling terminal 122, and the fifth tab is used to connect to other battery cells. If the battery cell group only has two cells, the first battery cell 11 and the second battery cell 12, then the fifth tab is used to connect to the first battery cell 11. If the battery pack also includes a third battery cell 13 disposed between the first battery cell 11 and the second battery cell 12, then the fifth tab is used to connect to the third battery cell 13. In this way, the fourth, fifth, and sixth tabs ensure stable transmission of electrical signals.

[0045] In some embodiments, a first end face 110 is provided with a first sampling terminal 112, and a second end face 120 is provided with a second sampling terminal 122. A first battery cell 11 includes a first tab, a second tab, and a third tab, and a second battery cell 12 includes a fourth tab, a fifth tab, and a sixth tab. The first tab is connected to a first connection terminal 111, the second tab is connected to other adjacent battery cells of the first battery cell 11, and the third tab is connected to the first sampling terminal 112. The first tab and the second tab have opposite polarities, and the first tab and the third tab have opposite polarities. The fourth tab is connected to a second connection terminal 121, the fifth tab is connected to other adjacent battery cells of the second battery cell 12, and the sixth tab is connected to the second sampling terminal 122. The fourth tab and the fifth tab have opposite polarities, and the fourth tab and the sixth tab have opposite polarities. If a first sampling terminal 112 and a second sampling terminal 122 are respectively provided at both ends of the battery cell assembly, then the first battery cell 11 is provided with a first tab, a second tab and a third tab, and the second battery cell 12 is provided with a fourth tab, a fifth tab and a sixth tab, so as to achieve a stable connection between the battery cell assembly and the sampling unit 20 and ensure the stability of the sampling process.

[0046] In some embodiments, in a battery cell assembly, one of two adjacent cells is provided with a third connection terminal, and the other is provided with a fourth connection terminal; the third connection terminal and the fourth connection terminal are electrically connected. This allows for flexible and reliable current transmission between the cells, which is beneficial for ensuring the reliability of the sampling process. Specifically, in some embodiments, the third connection terminal includes a third overcurrent terminal, and the fourth connection terminal includes a fourth overcurrent terminal. The third overcurrent terminal and the fourth overcurrent terminal are electrically connected. Thus, the connection between the cells is achieved through the terminals to ensure the stability of the connection and signal transmission.

[0047] In some embodiments, multiple cells within a cell group are connected to adjacent cells via a common terminal 102. Connecting adjacent cells through a single common terminal 102 saves on mechanical components, reduces connection points between cells, thereby lowering the risk of failure and further improving the reliability of the sampling process.

[0048] Combination Figure 1 and Figure 2 As shown, in some embodiments, the battery pack includes only the first battery cell 11 and the second battery cell 12.

[0049] The sampling unit 20 is disposed along a first direction on the side close to the first battery cell 11. The first battery cell 11 includes a first electrode core and a first tab, a second tab, and a third tab connected to the first electrode core, as well as a first overcurrent terminal 1110 and a first sampling terminal 1120. The second battery cell 12 includes a second electrode core and a fourth tab and a fifth tab connected to the second electrode core, as well as a second overcurrent terminal 1210. The first tab is connected to the first overcurrent terminal 1110, and the third tab is connected to the first sampling terminal 1120. The first overcurrent terminal 1110 and the first sampling terminal 1120 are respectively connected to the sampling unit 20 via signal lines. The fourth tab is connected to the second overcurrent terminal 1210, and the second overcurrent terminal 1210 is connected to the sampling unit 20 via a signal line. A common terminal 102 is disposed along the first direction between the first battery cell 11 and the second battery cell 12, and the second tab and the fifth tab are respectively connected to the common terminal 102.

[0050] Combination Figure 3 and Figure 4 As shown, in some embodiments, the battery pack includes a first battery cell 11, a second battery cell 12, and a third battery cell 13 connected between the first battery cell 11 and the second battery cell 12.

[0051] The sampling unit 20 is disposed along a first direction on the side close to the first battery cell 11. The first battery cell 11 includes a first electrode core and a first tab, a second tab, and a third tab connected to the first electrode core, as well as a first overcurrent terminal 1110 and a first sampling terminal 1120. The first tab is connected to the first overcurrent terminal 1110, and the third tab is connected to the first sampling terminal 1120. The first overcurrent terminal 1110 and the first sampling terminal 1120 are respectively connected to the sampling unit 20 via signal lines. A common terminal 102 is disposed between the first battery cell 11 and the third battery cell 13, and they are connected through the common terminal 102. The second tab of the first battery cell 11 is connected to the common terminal 102. The second battery cell 12 includes a second electrode core and a fourth tab, a fifth tab, and a sixth tab connected to the second electrode core, as well as a second overcurrent terminal 1210 and a second sampling terminal 1220. The fourth tab is connected to the second overcurrent terminal 1210, and the sixth tab is connected to the second sampling terminal 1220. The second overcurrent terminal 1210 and the second sampling terminal 1220 are respectively connected to the sampling unit 20 via signal lines. A common terminal 102 is provided between the second cell 12 and the third cell 13, and they are connected through this common terminal 102. The fifth tab of the second cell 12 is connected to this common terminal 102.

[0052] Combination Figures 5 to 7As shown, in some embodiments, there are multiple cell groups, and the first connection terminal 111 and the second connection terminal 121 of each cell group are connected to the sampling unit 20. Specifically, when the first end face 110 of the cell group has a first sampling terminal 112, the first sampling terminal 112 is electrically connected to the sampling unit 20. When the second end face 120 of the cell group has a second sampling terminal 122, the second sampling terminal 122 is electrically connected to the sampling unit 20. When the first end face 110 of the cell group has a first sampling terminal 112 and the second end face 120 has a second sampling terminal 122, both the first sampling terminal 112 and the second sampling terminal 122 are electrically connected to the sampling unit 20. This explanation pertains to the case where the battery has multiple cell groups. The previous description of a single cell group also applies to any cell group among the multiple cell groups in this battery.

[0053] In some embodiments, all cell groups have the same structure, and all cell groups are arranged along a second direction perpendicular to the first direction. This ensures that the cells are neatly arranged, facilitating packaging.

[0054] More specifically, such as Figure 5 As shown, in some embodiments, each cell group is provided with a first sampling terminal 112, but not a second sampling terminal 122. The sampling unit 20 is disposed along a first direction on the side close to the first sampling terminal 112. The second connection terminal 121 of each cell group is connected to the sampling unit 20 via a signal line. Specifically, multiple signal lines, the same number as the number of cell groups, are connected one by one to the second connection terminal 121, then aggregated and uniformly led to the sampling unit 20 for connection. This simplifies the wiring structure inside the battery, reduces the risk of failure due to complex wiring, and improves the overall reliability of the battery. Simultaneously, it optimizes the internal space utilization of the battery, making the battery pack structure compact and efficient.

[0055] In some embodiments, such as Figure 6 As shown, each cell assembly is equipped with a first sampling terminal 112 and a second sampling terminal 122. A sampling unit 20 is positioned along a first direction near the first sampling terminal 112. The second connection terminal 121 and the second sampling terminal 122 of each cell assembly are connected to the sampling unit 20 via signal lines. Multiple signal lines connected to the second connection terminal 121 and multiple signal lines connected to the second sampling terminal 122 are aggregated and uniformly led to the sampling unit 20 for connection. This simplifies the internal wiring structure of the battery, reduces the risk of failure due to complex wiring, and improves the overall reliability of the battery. Simultaneously, it optimizes the internal space utilization of the battery, resulting in a compact and efficient battery pack structure.

[0056] This application also provides a vehicle including the aforementioned battery. In some embodiments, the battery is used to power the vehicle, serving as a power battery within the vehicle.

[0057] In the description of this application, it should be understood that the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

Claims

1. A battery, characterized by, include: A battery cell assembly includes a plurality of battery cells arranged and connected in series along a first direction. The plurality of battery cells includes a first battery cell and a second battery cell, which are respectively located at the outermost ends of the battery cell assembly along the first direction. The first battery cell includes a first end face away from the second battery cell along the first direction, and the second battery cell includes a second end face away from the first battery cell along the first direction. The first end face is provided with a first connection terminal, and the second end face is provided with a second connection terminal. The polarities of the first connection terminal and the second connection terminal are opposite. The sampling unit is electrically connected to the first connection terminal and the second connection terminal, respectively; The first end face is provided with a first sampling end, the first sampling end having opposite polarity to the first connection end, and the first sampling end being electrically connected to the sampling unit; and / or The second end face is provided with a second sampling end, the second sampling end has the opposite polarity to the second connection end, and the second sampling end is electrically connected to the sampling unit.

2. The battery according to claim 1, characterized in that, The first connection terminal includes a first overcurrent terminal; and / or The second connection terminal includes a second overcurrent terminal; and / or The first sampling terminal includes a first sampling pole; and / or The second sampling terminal includes a second sampling pole.

3. The battery according to claim 1, characterized in that, The first end face is provided with the first sampling end, and the sampling unit is disposed along the first direction on the side close to the first end face; or The second end face is provided with the second sampling end, and the sampling unit is disposed on the side close to the second end face along the first direction.

4. The battery according to claim 1, characterized in that, The first end face is provided with the first sampling end and the second end face is provided with the second sampling end, and the sampling unit is disposed along the first direction on either side close to the first end face or close to the second end face.

5. The battery according to claim 1, characterized in that, The first end face is provided with a first sampling end, and the first battery cell includes a first tab, a second tab, and a third tab; wherein, the first tab is connected to the first connection end; the second tab is connected to other battery cells adjacent to the first battery cell; the third tab is connected to the first sampling end; the polarities of the first tab and the second tab are opposite, and the polarities of the first tab and the third tab are also opposite; or The second end face is provided with a second sampling end, and the second battery cell includes a fourth tab, a fifth tab and a sixth tab; wherein, the fourth tab is connected to the second connection end; the fifth tab is connected to other battery cells adjacent to the second battery cell; the sixth tab is connected to the second sampling end; the polarities of the fourth tab and the fifth tab are opposite, and the polarities of the fourth tab and the sixth tab are also opposite.

6. The battery according to claim 1, characterized in that, The first end face is provided with a first sampling end, and the second end face is provided with a second sampling end; The first battery cell includes a first tab, a second tab, and a third tab; The first electrode tab is connected to the first connecting end; The second electrode tab is connected to other battery cells adjacent to the first battery cell; The third electrode is connected to the first sampling end; The first electrode has the opposite polarity to the second electrode, and the first electrode has the opposite polarity to the third electrode; The second battery cell includes a fourth tab, a fifth tab, and a sixth tab; The fourth electrode is connected to the second connection end; The fifth electrode is connected to other cells adjacent to the second cell; The sixth electrode is connected to the second sampling end; The fourth electrode has the opposite polarity to the fifth electrode, and the fourth electrode has the opposite polarity to the sixth electrode.

7. The battery according to claim 1, characterized in that, In the battery cell assembly, one of two adjacent battery cells is provided with a third connection terminal, and the other is provided with a fourth connection terminal; the third connection terminal and the fourth connection terminal are electrically connected.

8. The battery according to claim 1, characterized in that, Multiple cells within the cell group are connected to adjacent cells via a shared terminal.

9. The battery according to claim 1, characterized in that, The number of battery cell groups is multiple, and the first and second connection terminals of each battery cell group are connected to the sampling unit. Wherein, when the first end face of the battery cell assembly is provided with a first sampling terminal, the first sampling terminal is electrically connected to the sampling unit; and / or When the second end face of the battery cell assembly is provided with a second sampling terminal, the second sampling terminal is electrically connected to the sampling unit; and / or When the first end face of the battery cell assembly is provided with a first sampling end and the second end face is provided with a second sampling end, both the first sampling end and the second sampling end are electrically connected to the sampling unit.

10. A vehicle characterized by comprising: Includes the battery as described in any one of claims 1 to 9.

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