Battery modules and vehicles

Abstract

This application provides a battery module and a vehicle. The battery module includes multiple individual battery cells. Each individual battery cell includes a cell, a casing, a first terminal, and a second terminal. The cell includes a first tab and a second tab. The cell is located inside the casing. Along a first direction, the first terminal is positioned at one end of the casing. The first terminal is connected to the first tab. Along the first direction, a second terminal is positioned at the other end of the casing. The second terminal is connected to the second tab. The multiple individual battery cells are electrically connected. One individual battery cell is directly connected to another individual battery cell through its own first terminal. The battery module of this application can solve the problem of adapter plates occupying internal space of the battery module and affecting the energy density of the battery module.

Description

Technical Field

[0001] This application relates to the field of battery technology, specifically to a battery module and a vehicle. Background Technology

[0002] With the progress of economic globalization and the large-scale use of fossil fuels, environmental pollution and energy shortages have received increasing attention. The search for new energy storage devices has become a research hotspot in the field of new energy. Batteries, with their advantages of high energy density, low self-discharge, good cycle performance, and no memory effect, have rapidly developed into a new generation of energy storage devices, used for power support in fields such as information technology, electric vehicles, and aerospace.

[0003] Multiple individual battery cells can be electrically connected and placed within the same frame to form a battery module. In related technologies, multiple individual battery cells within a battery module can be electrically connected via adapter plates. These adapter plates have relatively large dimensions, which can lead to low space utilization within the battery module, thus affecting its energy density. Summary of the Invention

[0004] This application provides a battery module and a vehicle that can solve the problem of adapter plates occupying internal space of the battery module and affecting the energy density of the battery module.

[0005] On one hand, this application provides a battery module, which includes:

[0006] Multiple individual cells, including:

[0007] The battery cell includes a first tab and a second tab;

[0008] The battery cell is located inside the casing.

[0009] The first pole post is disposed at one end of the housing along the first direction, and the first pole post is connected to the first pole tab;

[0010] The second pole post, along the first direction, is disposed at the other end of the housing, and the second pole post is connected to the second pole lug;

[0011] In this configuration, multiple individual cells are electrically connected, with one individual cell directly connected to another individual cell via its own first terminal.

[0012] The battery module provided in this application does not have any adapters or other connecting structures between adjacent individual cells. Individual cells can be directly connected via their respective first and second terminals. Therefore, it saves the internal space occupied by adapters in the battery module, which is beneficial for improving the volume utilization rate of individual cell cells, thereby increasing the energy density of the battery module.

[0013] Furthermore, eliminating the need for adapters between individual cells reduces the overcurrent path, thereby improving the overcurrent capacity between cells, lowering their internal resistance, and reducing heat generation. Simultaneously, it improves battery module assembly efficiency, reducing both the material costs of the adapters themselves and the overall assembly and maintenance costs of the battery module.

[0014] According to one embodiment of this application, along a first direction, in two adjacent single cells, the first terminal of one single cell is disposed opposite to the second terminal of the other single cell.

[0015] According to one embodiment of this application, in two adjacent single cells, at least a portion of the two opposing surfaces of the first terminal of one single cell and the second terminal of the other single cell are connected.

[0016] According to one embodiment of this application, the first electrode post includes a first body and a first connecting portion connected to each other. The first connecting portion is disposed on the side of the first body facing the battery cell. The first connecting portion is electrically connected to the first electrode tab. Along a second direction, the size of the first body is greater than or equal to 2 / 3 of the size of the housing. And along a third direction, the size of the first body is greater than or equal to 2 / 3 of the size of the housing.

[0017] According to one embodiment of this application, the second pole post includes a second body and a second connecting part connected to each other. The second connecting part is disposed on the side of the second body facing the battery cell. The second connecting part is electrically connected to the second electrode tab. Along the second direction, the size of the second body is greater than or equal to 2 / 3 of the size of the housing. And along the third direction, the size of the second body is greater than or equal to 2 / 3 of the size of the housing.

[0018] According to one embodiment of this application, in two adjacent single cells, the first body of one single cell and the second body of the other single cell are connected to two surfaces that are opposite to each other.

[0019] According to one embodiment of this application, the second body is provided with a recess that is recessed toward the cell. In two adjacent single cells, a portion of the first body of one single cell is located within the recess of the second body of the other single cell.

[0020] According to one embodiment of this application, the bottom wall of the recess is provided with a heat insulation groove, the opening of the heat insulation groove is facing away from the cell, and in two adjacent single cells, there is a gap between the surface of the first body of one single cell facing away from its own cell and the bottom wall of the heat insulation groove of the second body of the other single cell.

[0021] According to one embodiment of this application, the connection methods of two adjacent individual cells include welding, riveting, and bonding.

[0022] On the other hand, this application provides a vehicle that includes the battery module as described in the above embodiments. The battery module can provide power to the vehicle. Attached Figure Description

[0023] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0024] Figure 1 This is a schematic diagram of the structure of a single battery cell according to an embodiment of this application;

[0025] Figure 2 This is an exploded structural diagram of a single cell battery according to an embodiment of this application;

[0026] Figure 3 This is a partial structural diagram of a battery pack according to an embodiment of this application;

[0027] Figure 4 for Figure 3 Enlarged view of point A in the middle;

[0028] Figure 5 This is a schematic diagram of the structure of the first pole post according to an embodiment of this application;

[0029] Figure 6 This is a schematic diagram of the structure of the second pole post according to an embodiment of this application;

[0030] Figure 7 This is a partial cross-sectional view of a battery pack according to an embodiment of this application;

[0031] Figure 8 This is a partial structural diagram of a battery module according to an embodiment of this application.

[0032] Explanation of reference numerals in the attached figures:

[0033] 1. Battery module;

[0034] 10. Battery pack;

[0035] 100. Single cell battery;

[0036] 110. Battery cells;

[0037] 111. First pole ear; 112. Second pole ear;

[0038] 120. Shell;

[0039] 130. First pole;

[0040] 131. First body; 132. First connecting part;

[0041] 140. Second pole column;

[0042] 141. The Second Body;

[0043] 141a, Recess; 141b, Insulation groove;

[0044] 142. Second connecting part;

[0045] 150. Discharge channel plate;

[0046] 160. Explosion-proof valve;

[0047] X, first direction; Y, second direction; Z, third direction.

[0048] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0049] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0050] The single-cell battery 100 in this application embodiment may include a lithium-ion secondary battery, a lithium-sulfur battery, or a sodium-lithium-ion battery, etc. The battery 100 in this application embodiment may be a solid-state battery or a semi-solid-state battery. No limitation is made in this application. The single-cell battery 100 can generally be divided into prismatic batteries and pouch batteries according to the packaging method. Exemplarily, the single-cell battery 100 of this application may be a prismatic battery.

[0051] The battery module 1 of this application can provide energy for equipment such as vehicles, ships, and small aircraft. Taking a vehicle as an example, the vehicle in this application can be a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid electric vehicle, or a range-extended electric vehicle.

[0052] The battery module 1 can serve as a driving power source for the vehicle, replacing or partially replacing fuel or natural gas to provide driving power. For example, the battery module 1 can provide electrical energy to the drive motor. The drive motor is connected to the wheels of the vehicle via a transmission mechanism to drive the vehicle. Specifically, the battery module 1 can be horizontally mounted on the bottom of the vehicle.

[0053] Battery module 1 may include multiple individual battery cells 100. Each individual battery cell 100 includes a battery cell 110. Each battery cell 110 may include a positive electrode, a separator, and a negative electrode. The positive electrode, separator, and negative electrode may be formed into a wound battery cell using a winding process. Alternatively, the positive electrode, separator, negative electrode, and separator may be stacked sequentially to form a stacked battery cell. Alternatively, the positive electrode, separator, and negative electrode may be formed into a battery cell using a combination of winding and stacking processes.

[0054] The single-cell battery 100 mainly relies on the movement of lithium ions between the positive and negative electrode plates for charging and discharging. During the charging process, lithium ions can be extracted from the positive electrode plate, and then inserted into the negative electrode plate after passing through the separator.

[0055] In this application, multiple individual battery cells 100 can be electrically connected to form a battery module 1.

[0056] In related technologies, multiple individual battery cells need to be connected via adapter plates. For example, adjacent battery cells require electrical connection via adapter plates. The applicant has found that adapter plates need to have a large overcurrent cross-section to meet high overcurrent requirements. Furthermore, adapter plates also have a certain width and thickness. Therefore, adapter plates occupy some space in the battery module, easily leading to reduced space utilization of the multiple battery cell arrangement and affecting the energy density of the battery module. In addition, the presence of adapter plates also increases the overcurrent path.

[0057] Based on the above issues, the applicant has improved the structure of the battery module. In this application, the two interconnected individual battery cells 100 do not need to be electrically connected through other adapters. They can be directly electrically connected through the first terminal 130 and the second terminal 140 to achieve electrical conduction between the two individual battery cells 100. This reduces the space occupied by adapters in the internal space of the battery module 1, which is beneficial to increasing the size of the cell 110 and thus increasing the energy density of the battery module 1.

[0058] The battery module 1 provided in this application will be further described below with reference to specific embodiments.

[0059] See Figures 1 to 4 As shown, the battery module 1 of this application embodiment includes a plurality of individual battery cells 100. Each individual battery cell 100 includes a cell 110, a casing 120, a first terminal 130, and a second terminal 140. The cell 110 includes a first tab 111 and a second tab 112. The cell 110 is located within the casing 120. The casing 120 can serve to protect the cell 110.

[0060] Along the first direction X, a first terminal 130 is disposed at one end of the housing 120. The first terminal 130 is connected to a first tab 111. Along the first direction X, a second terminal 140 is disposed at the other end of the housing 120. The second terminal 140 is connected to a second tab 112. In other words, along the first direction X, the first terminal 130 and the second terminal 140 are respectively disposed at both ends of the housing 120.

[0061] This application describes a specific implementation using a square battery as an example. The first direction X can be the length direction of a single cell 100.

[0062] The first electrode 111 and the second electrode 112 can have opposite polarities. That is, the first electrode post 130 and the second electrode post 140 also have opposite polarities.

[0063] Multiple individual battery cells 100 can be electrically connected. Among two electrically connected individual battery cells 100, one individual battery cell 100 is directly connected to the other individual battery cell 100 through its own first terminal 130.

[0064] In this embodiment, direct connection means that no adapter or other connection structure is provided between two adjacent individual battery cells 100. Individual battery cells 100 can be directly connected through their respective first terminal 130 and second terminal 140. Therefore, the internal space occupied by adapters in the battery module 1 can be saved, which is beneficial to improving the volume utilization rate of the cell 110 of the individual battery cells 100, thereby increasing the energy density of the battery module 1.

[0065] Furthermore, the elimination of the need for an adapter between the two individual battery cells 100 reduces the overcurrent path, thereby improving the overcurrent capacity between the individual battery cells 100 and reducing their internal resistance, which helps reduce heat generation. Simultaneously, it improves the assembly efficiency of the battery module 1, thus reducing both the material cost of the adapter and the assembly and subsequent maintenance costs of the battery module 1.

[0066] In some instances, each individual battery cell 100 in this application embodiment can be a complete and independent energy storage structure. During the assembly process of the battery module 1, individual battery cells 100 can be assembled first, and then multiple battery cells 100 can be assembled through the first terminal 130 or the second terminal 140. Electrical conduction can be achieved between any two battery cells 100 through the first terminal 130 and the second terminal 140.

[0067] In some examples, cell 110 can be a wound cell or a laminated cell, and this application does not limit the specific type of cell.

[0068] See also some of the possible implementation methods. Figure 3 and Figure 4 As shown, along the first direction X, in two adjacent single cells 100, the first terminal 130 of one single cell 100 is arranged opposite to the second terminal 140 of the other single cell 100.

[0069] In this embodiment of the application, multiple individual battery cells 100 can be arranged side by side along a first direction X. Specifically, between any two adjacent individual battery cells 100, the first terminal 130 of one individual battery cell 100 and the second terminal 140 of the other individual battery cell 100 are arranged opposite each other to facilitate connection.

[0070] In some examples, along the first direction X, the orthographic projection of the first terminal 130 can be located inside the orthographic projection of the second terminal 140, so that the first terminal 130 of one cell 100 and the second terminal 140 of another cell 100 can make full contact, thereby improving the overcurrent capability of the two cells 100.

[0071] For example, along the first direction X, the orthographic projection of the outer contour of the first terminal 130 and the orthographic projection of the outer contour of the second terminal 140 can overlap with each other. Thus, when the first terminal 130 of one single cell 100 is directly connected to the second terminal 140 of another single cell 100, the area of ​​the electrical connection between the first terminal 130 and the second terminal 140 can be maximized, which is beneficial to improving the charging and discharging speed of the battery module 1.

[0072] See also some of the possible implementation methods. Figure 4 As shown, in two adjacent single-cell batteries 100 of this application embodiment, at least a portion of the two opposing surfaces of the first terminal 130 of one single-cell battery 100 and the second terminal 140 of the other single-cell battery 100 are connected.

[0073] In some examples, the two opposing surfaces of the first terminal 130 of one cell 100 and the second terminal 140 of another cell 100 can be fitted together to increase the effective contact area between the first terminal 130 of one cell 100 and the second terminal 140 of another cell 100, thereby improving the overcurrent capability between two adjacent cells 100.

[0074] In some examples, the two opposing surfaces of the first terminal 130 of one cell 100 and the second terminal 140 of another cell 100 may be partially connected. A gap may be formed in the unconnected area along the first direction X, thereby effectively blocking heat transfer when one cell 100 malfunctions and generates significant heat. This helps reduce the rate at which the heat generated by the malfunctioning cell 100 spreads to the adjacent cell 100, thus reducing the likelihood of the battery module 1 malfunctioning due to high temperatures.

[0075] See also some of the possible implementation methods. Figure 5 As shown, the first electrode post 130 in this embodiment includes a first body 131 and a first connecting portion 132 connected together. The first connecting portion 132 is disposed on the side of the first body 131 facing the battery cell 110. The first connecting portion 132 is electrically connected to the first electrode tab 111. Along the second direction Y, the size of the first body 131 is greater than or equal to 2 / 3 of the size of the housing 120, and along the third direction Z, the size of the first body 131 is greater than or equal to 2 / 3 of the size of the housing 120.

[0076] The outer surface of the first body 131, which can be used to electrically connect other individual battery cells 100, can be set large enough to improve the overcurrent capability between the individual battery cells 100. It is understood that the size of the first body 131 along the second direction Y or the third direction Z can exceed the smaller size of the housing 120, in order to reduce the possibility that a large first body 131 would occupy external space of the individual battery cells 100, thereby reducing the utilization rate of the internal space of the battery module 10 and affecting the energy density of the battery module 10.

[0077] In some examples, the surface of the first body 131 of a single cell 100 facing away from the first connection portion 132 is used for electrical connection with another single cell 100. Along the first direction X, the orthographic projection of the outer contour of the first body 131 can coincide with the orthographic projection of the outer contour of the housing 120, and the outer contour of the surface of the first body 131 used for electrical connection with the other single cell 100 is close to the outer contour of the housing 120, thereby maximizing the first body 131 and improving the overcurrent capability of the battery.

[0078] In other examples, the exterior of the individual cell 100 is typically provided with an insulating layer for side-by-side arrangement with adjacent individual cells 100 or for insulation and isolation from the liquid cooling plate. Along the second direction Y, the size of the first body 131 can be slightly smaller than the size of the housing 120. Simultaneously, along the third direction Z, the size of the first body 131 can also be slightly smaller than the size of the housing 120. This reduces the likelihood of electrical conduction between the housing 120 and the liquid cooling plate, which could lead to a short circuit between multiple individual cells 100, should the insulating layer on the exterior of the housing 120 detach.

[0079] In some examples, the second direction Y can be the thickness direction of the square single cell 100. The third direction Z can be the width of the square single cell 100. The first direction X, the second direction Y, and the third direction Z are perpendicular to each other.

[0080] See also some of the possible implementation methods. Figure 6 As shown, the second electrode post 140 in this embodiment includes a second body 141 and a second connecting portion 142 connected together. The second connecting portion 142 is disposed on the side of the second body 141 facing the battery cell 110. The second connecting portion 142 is electrically connected to the second electrode tab 112. Along the second direction Y, the size of the second body 141 is greater than or equal to 2 / 3 of the size of the housing 120. Along the third direction Z, the size of the second body 141 is greater than or equal to 2 / 3 of the size of the housing 120.

[0081] The second body 141 can be used to electrically connect other individual battery cells 100. Its outer surface can be set large enough to improve the overcurrent capability between the individual battery cells 100. It is understood that the size of the second body 141 along the second direction Y or the third direction Z can exceed the smaller size of the housing 120 to reduce the possibility that a larger second body 141 would occupy external space of the individual battery cells 100, thereby reducing the utilization rate of the internal space of the battery module 10 and affecting the energy density of the battery module 10.

[0082] In some examples, the surface of the second body 141 of one cell 100 facing away from the second connection portion 142 is used for electrical connection with the first body 131 of another cell 100. Along the first direction X, the orthographic projection of the outer contour of the second body 141 can coincide with the orthographic projection of the outer contour of the housing 120 to maximize the second body 141 and improve the overcurrent capability of the battery.

[0083] In other examples, the exterior of the individual cell 100 is typically provided with an insulating layer for side-by-side arrangement with adjacent individual cells 100 or for insulation and isolation from the liquid cooling plate. Along the second direction Y, the size of the second body 141 can be slightly smaller than the size of the housing 120. Simultaneously, along the third direction Z, the size of the second body 141 can also be slightly smaller than the size of the housing 120. This reduces the likelihood of electrical conduction between the housing 120 and the liquid cooling plate, which could lead to a short circuit between multiple individual cells 100, should the insulating layer on the exterior of the housing 120 detach.

[0084] See also some of the possible implementation methods. Figure 4 and Figure 7 As shown, in two adjacent single cells 100, the first body 131 of one single cell 100 and the second body 141 of the other single cell 100 are connected to each other on their two opposing surfaces.

[0085] The first body 131 and the second body 141 in this application embodiment can have the same structure, and along the first direction X, the orthographic projection of the outer contour of the first body 131 and the orthographic projection of the outer contour of the second body 141 can coincide with the orthographic projection of the outer contour of the housing 120. This can, on the one hand, more effectively increase the contact area of ​​the electrical connection between two adjacent single cells 100, thereby improving the overcurrent capability between the two single cells 100; on the other hand, it can also improve the connection stability between the two single cells 100.

[0086] Furthermore, since the orthographic projection of the outer contour of the first body 131 and the orthographic projection of the outer contour of the second body 141 can both coincide with the orthographic projection of the outer contour of the housing 120, when it is necessary to collect data such as the voltage of each individual battery 100 through the first pole post 130 or the second pole post 140, the staff can easily connect the acquisition chip to the first body 131 or the second body 141, which is beneficial to improving the maintenance efficiency of the staff.

[0087] Furthermore, along the first direction X, since the orthographic projection of the outer contour of the first body 131 and the orthographic projection of the outer contour of the second body 141 do not exceed the orthographic projection of the outer contour of the housing 120, the first body 131 and the second body 141 only occupy the external space of the housing 120 along the first direction X, and do not occupy the external space of the housing 120 in other directions. Therefore, the possibility of the first body 131 and the second body 141 occupying the internal space of the battery module 1 and causing the energy density of the battery module 1 to decrease can be reduced.

[0088] In some examples, the housing 120, the first terminal 130, and the second terminal 140 can all be made of conductive metallic materials. The housing 120 can have high strength to reduce the possibility that the housing 120 will be punctured and the cell 110 will be damaged during handling or transportation of the single battery cell 100.

[0089] For example, the material of the housing 120 may be aluminum, aluminum alloy, steel, or stainless steel, etc. No limitation is made in this application.

[0090] In some examples, the first terminal 130 and the second terminal 140 can be of the same structure, which helps to reduce the number of parts and lower the maintenance cost of the single cell 100.

[0091] In other examples, the first terminal 130 and the second terminal 140 may also have different structures, allowing operators to distinguish the polarity of the individual battery 100. During the series connection of two individual batteries 100, the likelihood of electrical connection occurring between two first terminals 130 or two second terminals 140 having the same electrical polarity can be reduced.

[0092] In some examples, both the first terminal 130 and the second terminal 140 may be insulated from the housing 120. Alternatively, one of the first terminal 130 and the second terminal 140 may be electrically connected to the housing 120, while the other may be insulated from the housing 120. No limitation is made in this application.

[0093] For example, the first terminal 130 may have a positive polarity. The second terminal 140 may have a negative polarity. When the housing 120 is made of aluminum, the housing 120 may be electrically connected to the first terminal 130 with a positive polarity. When the housing 120 is made of steel, the housing 120 may be electrically connected to the second terminal 140 with a negative polarity.

[0094] See also some of the possible implementation methods. Figure 6 and Figure 7 As shown, the second body 141 of this embodiment is provided with a recess 141a. The recess 141a is recessed toward the cell 110. In two adjacent single cells 100, a portion of the first body 131 of one single cell 100 is located within the recess 141a of the second body 141 of the other single cell 100.

[0095] In this embodiment, the opening of the recess 141a is positioned away from the cell 110 itself, so that at least a portion of the first body 131 of the adjacent single cell 100 can be located within the recess 141a. It is understood that, along the first direction X, the size of two adjacent single cells 100 connected in series is less than the sum of the individual sizes of the two single cells 100.

[0096] Therefore, at least a portion of the first body 131 of a single cell 100 can be located within the recess 141a of the second body 141 of another single cell 100, which can effectively save space in the battery module 1 along the first direction X, thereby improving the space utilization rate inside the battery module 1 and increasing the energy density of the battery module 1.

[0097] In some examples, the cross-sectional shape of the recess 141a may match the cross-sectional shape of the first body 131. The cross-section is perpendicular to the first direction X.

[0098] See also some of the possible implementation methods. Figure 6 and Figure 7 As shown, a heat insulation groove 141b is provided on the bottom wall of the recess 141a. The opening of the heat insulation groove 141b faces away from the cell 110. The heat insulation groove 141b can be recessed towards the cell 110 of the individual battery 100 itself. In two adjacent individual batteries 100, there is a gap between the surface of the first body 131 of one individual battery 100 facing away from its own cell 110 and the bottom wall of the heat insulation groove 141b of the second body 141 of the other individual battery 100.

[0099] When a single cell 100 malfunctions and generates excessive heat, the heat can be released to the outside of the single cell 100 through the heat insulation groove 141b. This reduces the possibility that the heat from the malfunctioning single cell 100 will continue to rise and affect the working performance of adjacent single cells 100, or even affect the working performance of the entire battery module.

[0100] In some examples, the cross-sectional area of ​​the heat insulation groove 141b is smaller than the cross-sectional area of ​​the recess 141a, so that there is a gap between the surface of the first body 131 of a single cell 100 facing away from its own cell 110 and the bottom wall of the heat insulation groove 141b.

[0101] In some examples, the cross-sectional shape of the heat insulation groove 141b can be circular, elliptical, quadrilateral, or other polygonal. No limitation is made in this application.

[0102] In some examples, battery module 1 may include a temperature sensor. The temperature sensor can be used to detect the temperature of the individual battery cell 100. When the individual battery cell 100 experiences an abnormality that causes a high temperature, the temperature sensor can transmit the temperature information to the battery management system.

[0103] The heat insulation groove 141b of this embodiment can be used to accommodate a temperature sensor, which can be directly connected to the first pole 130 or the second pole 140 to improve the accuracy of temperature detection by the temperature sensor.

[0104] In some feasible ways, the connection of two adjacent individual battery cells 100 in this application embodiment includes welding, riveting, and bonding.

[0105] In this application embodiment, multiple individual battery cells 100 can be connected by at least one of welding, riveting, and bonding to improve the connection stability between adjacent individual battery cells 100. The specific connection method between individual battery cells 100 is not limited in this application.

[0106] See also some of the possible implementation methods. Figure 8 As shown, multiple individual battery cells 100 are connected in series along a first direction X to form a battery pack 10. The multiple battery packs 10 are arranged side by side along a second direction Y, with adjacent battery packs 10 connected in series.

[0107] Multiple individual battery cells 100 can be sequentially connected along a first direction X to form a battery pack 10. It should be noted that in two adjacent individual battery cells 100, the first terminal 130 of one individual battery cell 100 is electrically connected to the second terminal 140 of the other individual battery cell 100. Multiple individual battery cells 100 can be electrically connected along a second direction Y to form a square battery module 1.

[0108] In some instances, two adjacent battery packs 10 can be connected via an adapter.

[0109] In some examples, the single cell 100 of this application embodiment may be a square structure.

[0110] This application also provides a vehicle. The vehicle may be equipped with the battery module 1 described in the above embodiments. The battery module 1 can provide power to the vehicle.

[0111] In some examples, embodiments of this application also provide a vehicle. The vehicle includes the battery 100 described in the above embodiments. The battery 100 may further include a discharge channel plate 150 and an explosion-proof valve 160. The discharge channel plate 150 may be located inside the housing 120. The explosion-proof valve 160 may be located outside the housing 120. The discharge channel plate 150 and the explosion-proof valve 160 may be correspondingly arranged. The discharge channel plate 150 may be used to support the battery cell 110 so that there is a gap between the battery cell 110 and the inner wall of the housing 120, so that when the battery 100 malfunctions, the battery cell 110 is less likely to block the explosion-proof valve 160, thus preventing the explosion-proof valve 160 from failing.

[0112] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application according to the specific circumstances.

[0113] The devices or elements referred to in the embodiments of this application or implied herein must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of this application. In the description of the embodiments of this application, "a plurality of" means two or more, unless otherwise precisely specified.

[0114] The terms "first," "second," "third," "fourth," etc. (if present) in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in orders other than those illustrated or described herein.

[0115] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0116] The term "multiple" in this article refers to two or more. The term "and / or" in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. Furthermore, the character " / " in this article generally indicates an "or" relationship between the preceding and following related objects; in formulas, the character " / " indicates a "division" relationship between the preceding and following related objects.

[0117] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application.

[0118] It is understood that, in the embodiments of this application, the order of the above-mentioned process numbers does not imply the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of this application.

Claims

1. A battery module, characterized in that, include: Multiple individual cells, said individual cells comprising: The battery cell includes a first tab and a second tab; The housing, wherein the battery cell is located within the housing; A first pole post is disposed at one end of the housing along a first direction, and the first pole post is connected to the first pole tab; The second pole post is disposed at the other end of the housing along the first direction, and the second pole post is connected to the second pole tab; Among them, multiple individual battery cells are electrically connected, and one individual battery cell is directly connected to another individual battery cell through its own first terminal post; The first electrode post includes a first body and a first connecting part connected to each other. The first connecting part is disposed on the side of the first body facing the battery cell. The first connecting part is electrically connected to the first electrode tab. Along the first direction, the orthographic projection of the outer contour of the first body coincides with the orthographic projection of the outer contour of the housing. The second pole post includes a second body and a second connecting part connected to each other. The second connecting part is disposed on the side of the second body facing the battery cell. The second connecting part is electrically connected to the second electrode tab. Along the first direction, the orthographic projection of the outer contour of the second body coincides with the orthographic projection of the outer contour of the housing. In two adjacent single cells, the first body of one single cell and the second body of the other single cell are connected to two opposing surfaces. The second body is provided with a recess that is recessed toward the cell. In two adjacent cells, a portion of the first body of one cell is located within the recess of the second body of the other cell. The bottom wall of the recess is provided with a heat insulation groove, the opening of the heat insulation groove is facing away from the cell, and in two adjacent cells, there is a gap between the surface of the first body of one cell facing away from its own cell and the bottom wall of the heat insulation groove of the second body of the other cell.

2. The battery module according to claim 1, characterized in that, Along the first direction, in two adjacent individual cells, the first terminal of one individual cell is positioned opposite to the second terminal of the other individual cell.

3. The battery module according to claim 2, characterized in that, In two adjacent single cells, at least a portion of the two opposing surfaces of the first terminal of one single cell and the second terminal of the other single cell are connected.

4. The battery module according to claim 3, characterized in that, Along the second direction, the size of the first body is greater than or equal to 2 / 3 of the size of the shell, and along the third direction, the size of the first body is greater than or equal to 2 / 3 of the size of the shell.

5. The battery module according to claim 4, characterized in that, Along the second direction, the size of the second body is greater than or equal to 2 / 3 of the size of the housing, and along the third direction, the size of the second body is greater than or equal to 2 / 3 of the size of the housing.

6. The battery module according to claim 2, characterized in that, The connection methods for two adjacent individual cells include welding, riveting, and bonding.

7. A vehicle, characterized in that, Includes the battery module as described in any one of claims 1 to 6.

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