Battery and electric device

Abstract

The battery comprises at least one battery pack, each battery pack comprises two battery rows, each battery row comprises at least one single battery, the surface of one side, facing the other battery row in the same battery pack, of each single battery is a first end face, and the first end face is provided with a pressure relief structure. The electric connection ends of the single batteries are arranged on other surfaces of the single batteries except the first end faces.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of batteries, in particular to a battery and a power consumption device. BACKGROUND

[0002] In the related art, when the internal pressure of a battery is too high, a pressure relief method is used to ensure the safe use of the battery. However, during the pressure relief process, the discharge emitted by the battery can easily flow to the electrical connection area of the battery, causing high-voltage sparking. SUMMARY

[0003] The present application aims to at least solve one of the technical problems existing in the prior art. To this end, the present application provides a battery which can reduce the impact of discharge emitted by a pressure relief structure on an electrical connection end, avoid insulation failure, high-voltage sparking, and the like, and has good use safety and reliability.

[0004] The present application also provides a power consumption device having the above battery.

[0005] According to the battery of the first aspect of the present application, at least one battery group is provided, the battery group includes two rows of battery rows, each row of battery rows includes at least one battery monomer, the side surface of the battery monomer facing the other battery row in the same battery group is a first end surface, the first end surface has a pressure relief structure, and the electrical connection end of the battery monomer is arranged on the surface of the battery monomer other than the first end surface.

[0006] According to the battery of the present application, the pressure relief structure and the electrical connection end of the battery monomer are arranged on different surfaces of the battery monomer, so as to effectively avoid the problem of insulation failure, high-voltage sparking, and the like caused by the discharge emitted by the battery monomer through the pressure relief structure, such as particles, flowing to the electrical connection end, and ensure the use safety and reliability of the battery.

[0007] In some embodiments, the side surface of the battery monomer facing the other battery row in the same battery group is a second end surface, and the electrical connection end of the battery monomer is arranged on the second end surface.

[0008] In some embodiments, the side surface of the battery monomer facing the other battery row in the same battery group is a second end surface, and the surface of the battery monomer between the first end surface and the second end surface is a peripheral wall surface, and the electrical connection end of the battery monomer is arranged on the peripheral wall surface.

[0009] In some embodiments, each of the battery rows comprises a plurality of the battery cells arranged along a first direction, two of the battery rows in the same battery group are arranged along a second direction, the peripheral wall surface comprises two third end surfaces oppositely arranged along a third direction, the electrical connection ends of the battery cells are arranged at the third end surfaces, and the first direction, the second direction and the third direction are perpendicular to each other.

[0010] In some embodiments, the pressure relief structures of the two battery rows in the same battery group are staggered in the direction of the relative arrangement of the two battery rows.

[0011] In some embodiments, the pressure relief structures of the two battery rows in the same battery group are staggered in the length direction or the height direction of the battery rows.

[0012] In some embodiments, the pressure relief structures are arranged at the middle part of the first end surface, and the battery cells of the two battery rows in the same battery group are staggered in the direction of the relative arrangement of the two battery rows.

[0013] In some embodiments, the battery cells of the two battery rows in the same battery group are staggered in the length direction of the battery rows.

[0014] In some embodiments, each of the battery rows comprises a plurality of the battery cells arranged along the length direction of the battery row.

[0015] In some embodiments, a plurality of the battery groups are arranged along the height direction of the battery row to form a battery unit.

[0016] In some embodiments, the number of the battery groups included in the battery unit is less than the number of the battery cells included in the battery row.

[0017] In some embodiments, the number of the battery groups included in the battery unit is 1-3.

[0018] In some embodiments, the thickness direction of the battery cell is the same as the height direction of the battery.

[0019] In some embodiments, the battery cell is a ternary lithium battery.

[0020] In some embodiments, the battery further comprises a discharge member arranged between two of the battery rows in the same battery group, and the discharge member defines a discharge cavity for receiving the discharge of at least one group of the battery groups from the pressure relief structure.

[0021] In some embodiments, the side of the exhaust member facing the battery rows is provided with an inlet area corresponding to the pressure relief structure, and the exhaust cavity is adapted to receive the exhaust from the corresponding pressure relief structure through the inlet area.

[0022] In some embodiments, the orthographic projections of the inlet areas on the opposite sides along the opposite arrangement direction of the two rows of battery rows are staggered in the length direction of the exhaust member.

[0023] In some embodiments, the outer peripheral area of each inlet area is provided with an insulating member.

[0024] In some embodiments, the battery further comprises a box member comprising a side wall and a partition beam located in the space enclosed by the side wall to divide the space into multiple accommodation cavities for accommodating the battery rows, and the partition beam is configured as the exhaust member.

[0025] In some embodiments, the battery further comprises a heat exchange member located between two battery rows of the same battery group, and the heat exchange member is adapted to exchange heat with at least one of the two battery rows.

[0026] In some embodiments, the battery further comprises a box member comprising a side wall and a partition beam located in the space enclosed by the side wall to divide the space into multiple accommodation cavities for accommodating the battery rows, and the partition beam is configured as the heat exchange member.

[0027] In some embodiments, the battery further comprises a heat management assembly located between two battery rows of the same battery group, and the heat management assembly further comprises an exhaust member for receiving the exhaust from the pressure relief structure of at least one battery group, and heat exchange members located on both sides of the thickness of the exhaust member, each heat exchange member being located between the exhaust member and the battery row, and each heat exchange member being adapted to exchange heat with the corresponding side of the battery row, and at least part of the exhaust member being adapted to exchange heat with the heat exchange members.

[0028] In some embodiments, the heat exchange member defines a heat exchange cavity having an inlet and an outlet, so that the heat exchange medium is adapted to flow into the heat exchange cavity through the inlet and flow out through the outlet, and the heat exchange cavities on both sides of the thickness of the exhaust member are connected in series or in parallel.

[0029] In some embodiments, the outer side plate of the thermal management assembly is configured as the heat exchange member, and the outer side plate has an inlet region corresponding to the pressure relief structure; and the discharge member defines a discharge cavity adapted to receive the discharge from the corresponding pressure relief structure through the inlet region.

[0030] In some embodiments, a heat conducting member is arranged between the heat exchange member and the discharge member.

[0031] In some embodiments, the battery further comprises a box member comprising a side plate and a partition beam located in a space surrounded by the side plate to divide the space into a plurality of accommodation cavities for accommodating the battery rows, and the partition beam is configured as the thermal management assembly.

[0032] In some embodiments, the partition beam comprises a longitudinal beam extending along a length direction of the box member; or the partition beam comprises a transverse beam extending along a width direction of the box member; or the partition beam comprises a longitudinal beam extending along a length direction of the box member and a transverse beam extending along a width direction of the box member.

[0033] In some embodiments, the side plate is formed with a discharge path in communication with the discharge cavity of the discharge member.

[0034] In some embodiments, the battery further comprises a box member comprising a top cover, and the thermal management assembly is arranged on the top cover.

[0035] In some embodiments, the battery further comprises a box member comprising a bottom plate, and the thermal management assembly is arranged on the bottom plate.

[0036] In some embodiments, the battery further comprises a box member defining an accommodation cavity for accommodating the battery rows; a fixing member arranged in the box member, the fixing member being arranged on a thickness side of the battery rows and being in abutting engagement with all the outermost battery rows, and the fixing member being fixedly connected with the box member.

[0037] According to the second aspect of the embodiments of the present application, the power consuming device comprises the battery according to the first aspect of the embodiments of the present application, and the battery is used to provide electric energy for the power consuming device.

[0038] According to the power consuming device of the embodiments of the present application, by using the above battery, the use safety and reliability of the power consuming device are improved.

[0039] Additional aspects and advantages of the present application will be in part apparent and in part pointed out hereinafter. BRIEF DESCRIPTION OF DRAWINGS

[0040] The above and / or additional aspects and advantages of the present application will become apparent and more readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings in which:

[0041] Figure 1 is a schematic diagram of an electrical device in the related art;

[0042] Figure 2 is Figure 1 is a schematic diagram of a battery shown in

[0043] Figure 3 is a schematic diagram of a battery according to one embodiment of the present application;

[0044] Figure 4 is Figure 3 is a schematic diagram of a battery cell shown in

[0045] Figure 5 is Figure 3 is a schematic diagram of another embodiment of a battery cell shown in

[0046] Figure 6 is Figure 3 is a schematic diagram of yet another embodiment of a battery cell shown in

[0047] Figure 7 is Figure 3 is an exploded view of yet another embodiment of a battery cell shown in

[0048] Figure 8 is a schematic diagram of a battery according to one embodiment of the present application;

[0049] Figure 9 is a schematic diagram of a battery according to another embodiment of the present application;

[0050] Figure 10 is a schematic diagram of a battery according to two further embodiments of the present application;

[0051] Figure 11 is a schematic diagram of a battery according to one embodiment of the present application;

[0052] Figure 12 is Figure 11 is an exploded view of a battery shown in

[0053] Figure 13 is Figure 11 is an exploded view of a battery shown in

[0054] Figure 14 is Figure 11 is an exploded view of a thermal management assembly shown in

[0055] Figure 15 is a schematic illustration of an inlet region of a thermal management assembly according to one embodiment of the present application;

[0056] Figure 16 is a schematic illustration of an assembly of a thermal management assembly and a battery cell according to yet another embodiment of the present application;

[0057] Figure 17 is a schematic illustration of an assembly of a thermal management assembly and a battery cell according to still another embodiment of the present application;

[0058] Figure 18 is a schematic illustration of an assembly of a thermal management assembly and a battery cell according to yet another embodiment of the present application;

[0059] Figure 19 is an exploded view of a battery according to one embodiment of the present application;

[0060] Figure 20 is a partial schematic illustration of a battery as shown in Figure 19

[0061] Figure 21 is a schematic illustration of a battery pack according to another embodiment of the present application;

[0062] Figure 22 is a schematic illustration of a battery pack according to still another embodiment of the present application;

[0063] Figure 23 is an exploded view of a battery according to another embodiment of the present application;

[0064] Figure 24 is a partial schematic illustration of a battery as shown in Figure 23

[0065] Figure 25 is a schematic illustration of a discharge of a thermal management assembly as shown in Figure 24

[0066] is a schematic illustration of a discharge of a thermal management assembly according to another embodiment of the present application, the arrows indicating the direction of flow of the discharge; Figure 26

[0067] Figure 27 is a schematic illustration of an electrical consumer according to one embodiment of the present application.

[0068] Reference signs:

[0069] ​​​Battery 100, electric device 200, battery pack 1, battery row 11, battery monomer 111, pressure relief structure 1111, electrical connection end 1112, electric core 1113, shell 1114, end plate 112, thermal insulation piece 113, first end surface 111a, second end surface 111b, peripheral wall surface 111c, third end surface 111d, fourth end surface 111e, battery unit 2, thermal management assembly 3, discharge cavity 3a, inlet area 3b, heat exchange cavity 3c, discharge piece 31, heat exchange piece 32, outer side plate 33, inlet 32a, outlet 32b, box component 4, side wall plate 41, space 410, containing cavity 410a, partition beam 42, longitudinal beam 421, transverse beam 422, top cover 43, bottom plate 44, fixing piece 5. DETAILED DESCRIPTION

[0070] Embodiments of the present application are described below in detail with reference to examples thereof illustrated in the accompanying drawings, in which like or similar elements or components thereof have the same or similar reference numbers throughout. The embodiments described below through reference to the drawings are illustrative only, and are not intended to limit the present application.

[0071] The disclosure that follows provides many different embodiments, or examples, for implementing different structures of the present application. For the purpose of simplicity, the elements and settings of the particular examples below are described in some instances by a specific reference number. It is to be understood, however, that this is for simplicity and illustration only and that the application can be practiced or carried out in other instances without the specific elements or settings. Moreover, the use of the same reference numbers in different instances in the description indicates similar or like elements or components.

[0072] In the description of the present application, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential", and the like, indicate relative or positional relationships based on the orientation or position shown in the drawings, and are merely used to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, unless otherwise stated, the meaning of "a plurality of" is two or more.

[0073] In the description of the application, it is necessary to point out that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the internal communication of two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0074] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] In the present application, the battery cell can include a lithium ion secondary battery, a lithium ion primary battery, a lithium-sulfur battery, a sodium lithium ion battery, a sodium ion battery or a magnesium ion battery, etc. The present application embodiments are not limited thereto. The battery cell can be in the shape of a cylinder, a flat body, a cuboid or other shapes, etc. The present application embodiments are not limited thereto. The battery cell is generally divided into three types according to the packaging method: cylindrical battery cell, square battery cell and soft package battery cell, and the present application embodiments are not limited thereto.

[0076] The battery mentioned in the present application refers to a single physical module including one or more battery cells to provide higher voltage and capacity. For example, the battery mentioned in the present application can include a battery module or a battery pack, etc. The battery generally includes a box for packaging one or more battery cells or multiple battery modules; of course, the battery can also not include a box. The box can avoid the influence of liquid or other foreign matters on the charging or discharging of the battery cell.

[0077] For example, a battery cell includes a casing, electrode assembly, and electrolyte. The casing houses the electrode assembly and electrolyte. The electrode assembly consists of a positive electrode, a negative electrode, and a separator. The battery cell primarily functions by the movement of metal ions between the positive and negative electrode plates. The positive electrode includes a positive current collector and a positive active material layer. The positive active material layer is coated on the surface of the positive current collector, and the uncoated positive current collector protrudes beyond the coated positive current collector, serving as the positive electrode tab. Taking a lithium-ion battery as an example, the positive current collector can be made of aluminum, and the positive active material can be lithium cobalt oxide, lithium iron phosphate, ternary lithium, or lithium manganese oxide, etc. The negative electrode includes a negative current collector and a negative active material layer. The negative active material layer is coated on the surface of the negative current collector, and the negative current collector without the negative active material layer protrudes from the one with the negative active material layer. The negative current collector without the negative active material layer serves as the negative electrode tab. The material of the negative current collector can be copper, and the negative active material can be carbon or silicon, etc. To ensure that a large current can be passed without melting, there are multiple positive electrode tabs stacked together, and there are multiple negative electrode tabs stacked together.

[0078] The separator can be made of PP (polypropylene) or PE (polyethylene), etc. Furthermore, the electrode assembly can be a wound structure or a stacked structure; the embodiments of this application are not limited to these.

[0079] The pressure relief structure on the battery cell mentioned in this application is used to release the gas inside the battery cell when the internal pressure is too high (e.g., due to overcharging), thereby reducing the internal pressure of the battery cell and preventing it from exploding due to excessively rapid pressurization. For example, the pressure relief structure can be an explosion-proof valve, an explosion-proof plate, etc.

[0080] Some electrical appliances 200' (e.g.) Figure 1 As shown), battery 100' is used (e.g. Figure 2 As shown, the battery 100' provides power to the battery, which includes a housing 4' and a battery cell 111'. The housing 4' includes an upper shell 41' and a lower shell 42'. In conventional technology, the square-shell battery cell structure places the electrical connection end and the pressure relief mechanism on the same end face. However, when the pressure relief mechanism actuates the valve to release the internal pressure of the battery cell, conductive particles in the discharge of the battery cell often move to the electrical connection end and overlap with it to form an internal short circuit, or reduce the creepage gap between conductive components, resulting in insulation failure such as high-voltage arcing.

[0081] Therefore, in order to avoid the insulation failure problem caused by the battery cell when releasing the internal pressure, the electrical connection end of the battery cell and the pressure relief mechanism are arranged on different end surfaces of the square battery cell. However, in order to make the battery have appropriate voltage and capacity, multiple battery cells are often arranged in multiple rows and multiple columns, and the above structure can only make the electrical connection end of each battery cell away from the pressure relief structure of the battery cell itself.

[0082] Based on this, the inventors have conducted in-depth research and proposed a battery, which includes at least one battery group, the battery group includes two rows of battery rows, each row of battery rows includes at least one battery cell, the side surface of the battery cell facing the other battery row in the same battery group is a first end surface, the first end surface has a pressure relief structure, and the electrical connection end of the battery cell is arranged on the other surface of the battery cell except the first end surface.

[0083] In the battery with the above structure, by arranging the pressure relief structure and the electrical connection end of the battery cell on different end surfaces of the battery cell, the discharge of the battery cell through the pressure relief structure, such as particles, is prevented from flowing to the electrical connection end to cause high-pressure sparking and insulation failure, the creepage distance of each conductive part in the battery is ensured to avoid internal short circuit, and the electrical connection end of the battery cell is not arranged opposite to the pressure relief structure of the other battery row in the same battery group, so that the electrical connection end of the battery cell is not affected by the discharge of other battery cells, and the safety and reliability of the battery are ensured.

[0084] The battery disclosed in the embodiments of the present application can be used in an electric device such as a vehicle, a ship or an aircraft, and can be used in a power supply system of the electric device to ensure the safety and reliability of the electric device.

[0085] The electric device disclosed in the embodiments of the present application can be, but is not limited to, a car, a mobile phone, a tablet, a notebook computer, a ship, a spacecraft, an electric toy and an electric tool, etc. The vehicle can be a fuel car, a gas car, a new energy car or a rail vehicle, and the new energy car can be a pure electric car, a hybrid car or a range extended car, etc. The spacecraft includes an airplane, a rocket, a space shuttle and a spacecraft, etc. The electric toy includes a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy and an electric plane toy, etc. The electric tool includes a metal cutting electric tool, a grinding electric tool, an assembling electric tool and a railway electric tool, such as an electric drill, an electric grinder, an electric wrench, an electric screwdriver, an electric hammer, an impact drill, a concrete vibrator and an electric planer, etc.

[0086] Hereinafter, the battery 100 according to the embodiments of the present application will be described with reference to the accompanying drawings.

[0087] As shown in Figure 3 The battery 100 comprises at least one battery pack 1, the battery pack 1 comprises two rows of battery rows 11, each row of battery rows 11 comprises at least one battery monomer 111, the side surface of the battery monomer 111 facing the other battery row 11 in the same battery pack 1 is a first end surface 111a, the first end surface 111a has a pressure relief structure 1111, and the electrical connection end 1112 of the battery monomer 111 is arranged on the surface of the battery monomer 111 other than the first end surface 111a.

[0088] It can be seen that the electrical connection end 1112 and the pressure relief structure 1111 of the battery monomer 111 are respectively arranged on different surfaces of the battery monomer 111, so as to ensure that the electrical connection end 1112 and the pressure relief structure 1111 of the battery monomer 111 have a large spacing therebetween, thereby effectively avoiding that the discharge of the battery monomer 111 through the pressure relief structure 1111 (for example, in the case of thermal runaway of the battery monomer 111) flows to the electrical connection end 1112 of the battery monomer 111, causing insulation failure, high-voltage sparking and other problems. At the same time, the electrical connection end 1112 of the battery monomer 111 is not arranged opposite to the pressure relief structure 1111 of the other battery row 11 in the same battery pack 1, so as to prevent the electrical connection end 1112 of the battery monomer 111 from being affected by the discharge of other battery monomers 111 through the pressure relief structure 1111, and reduce the influence of the discharge of the battery monomer 111 through the pressure relief structure 111 on the electrical connection end 1112 of other battery monomers 111, thereby avoiding the battery monomer 111 to ensure the use safety and reliability of the battery

[0089] In addition, since the pressure relief structures 1111 of the two rows of battery rows 11 in the same battery pack 1 are arranged opposite to each other, the discharge of the two rows of battery rows 11 in the same battery pack 1 can be concentratedly received, thereby facilitating reduction of the number of components of the battery 100 and simplification of the structure of the battery 100.

[0090] According to the battery 100 of the embodiments of the present application, by arranging the pressure relief structure 1111 and the electrical connection end 1112 of the battery monomer 111 on different surfaces of the battery monomer 111 respectively, the discharge of the battery monomer 111 through the pressure relief structure 1111 (for example, in the case of thermal runaway of the battery monomer 111) is effectively avoided from flowing to the electrical connection end 1112, causing insulation failure problems such as high-voltage sparking, thereby ensuring the use safety and reliability of the battery 100.

[0091] In some embodiments, as shown in Figure 3 and Figure 4As shown, the side surface of the battery cell 111 facing away from the other battery row 11 in the same battery pack 1 is the second end face 111b. For the same battery cell 111, the first end face 111a and the second end face 111b are arranged back-to-back. The electrical connection terminal 1112 of the battery cell 111 is located on the second end face 111b. Therefore, the pressure relief structure 1111 and the electrical connection terminal 1112 of the battery cell 111 are arranged back-to-back along the arrangement direction of the two rows of battery rows 11 in the same battery pack 1, thereby further increasing the capacity of the battery cell 111. The spacing between the pressure relief structure 1111 and the electrical connection terminal 1112 of battery cell 11 keeps the electrical connection terminal 1112 away from the pressure relief structure 1111, further preventing the heat from the high-temperature emissions discharged by the battery cell 111 through the pressure relief structure 1111 from causing adverse thermal effects on the electrical connection structure at the electrical connection terminal 1112. At the same time, it can further reduce the risk of insulation failure caused by the leakage of particles in the emissions to the electrical connection area at the electrical connection terminal 1112, effectively ensuring the reliability and safety of battery 100.

[0092] As can be seen, the electrical connection end 1112 is located on the second end face 111b, which maximizes the distance between the electrical connection area of ​​the battery cell 111 and the pressure relief structure 1111. If the battery 100 also includes a discharge member 31, which has a discharge cavity 3a for receiving the discharge material discharged by the battery cell 111 through the pressure relief structure 1111, then the above-mentioned arrangement of the electrical connection end 1112 can also maximize the distance between the electrical connection area and the discharge cavity 3a, effectively improving insulation safety. Simultaneously, for battery cells 111 formed by winding bare cells (such as…),… Figure 7 As shown, the battery cell 111 includes a housing 1114 and a cell 1113 disposed within the housing 1114. The cell 1113 is formed by winding. In this case, tabs can be provided at both ends of the winding axis of the cell 1113, and electrical connection terminals 1112 and pressure relief structures 1111 are provided at both ends of the winding axis. This can shorten the lead-out path of the tabs and electrical connection terminals 1112. At the same time, the discharge direction of the discharge material is roughly along the winding axis, and the discharge material between layers can pass smoothly between layers, ensuring smoother discharge, such as smoother exhaust.

[0093] In addition, leakage, such as electrolyte leakage, is likely to occur at the pressure relief structure 1111 of the battery cell 111. The pressure relief structure 1111 is set back from the electrical connection end 1112, which can make the leakage location far away from the electrical connection area, further ensuring the safety of the battery cell 111 in use.

[0094] It can be understood that when the discharge member 31 described below is arranged between the two battery rows 11 of the same battery pack 1, the electrical connection end 1112 is arranged at the second end surface 111b, so that the electrical connection end 1112 is away from the pressure relief structure 1111 and the discharge member 31 at the same time, avoiding the high temperature of the discharge member 31 when discharging and guiding the gas from affecting the structure for electrical connection at the electrical connection end 1112, and reducing the probability of the discharge member 31 leaking the discharge particles to the electrical connection area to cause insulation failure, thereby ensuring the safety of the battery 100.

[0095] In addition, when the heat exchange member 32 is arranged between the two battery rows 11 of the same battery pack 1, if the liquid heat exchange medium is arranged in the heat exchange member 32, and the electrical connection end 1112 is arranged at the second end surface 111b, the distance between the electrical connection end 1112 and the heat exchange member 32 can be increased, so that the electrical connection end 1112 is away from the pressure relief structure 1111 of the corresponding battery monomer 111 and the heat exchange member 32 at the same time, and even if the liquid heat exchange medium in the heat exchange member 32 leaks, it is not easy to affect the electrical connection area formed by the electrical connection end 1112, so as to avoid the electrical connection area being conducted by the leaked liquid heat exchange medium, and ensure the insulation reliability.

[0096] In some embodiments, as shown in Figure 3 , Figure 5 and Figure 6 , the side surface of the battery monomer 111 facing away from the other battery row 11 in the same battery pack 1 is the second end surface 111b, the surface of the battery monomer 111 between the first end surface 111a and the second end surface 111b is the peripheral wall surface 111c, and the electrical connection end 1112 of the battery monomer 111 is arranged at the peripheral wall surface 111c. Thus, the appropriate distance between the electrical connection end 1112 of the battery monomer 111 and the pressure relief structure 1111 can be ensured, thereby ensuring the reliability and safety of the battery 100.

[0097] In some embodiments, as shown in Figure 3 and Figure 5 , each battery row 11 includes a plurality of battery monomers 111 arranged in a first direction (for example, the AA' direction in Figure 3 , the length direction of the battery row 11), and the two battery rows 11 in the same battery pack 1 are arranged in a second direction (for example, the BB' direction in Figure 3 , the width direction or height direction of the battery row 11), the peripheral wall surface 111c includes two third end surfaces 111d oppositely arranged in a third direction (for example, the CC' direction in Figure 3 , the height direction or width direction of the battery row 11), and the electrical connection end 1112 of the battery monomer 111 is arranged at the third end surface 111d. The first direction, the second direction and the third direction are perpendicular to each other.

[0098] For example, inFigure 3 and Figure 5 In the example of the battery monomer 111 being a hexahedral structure, taking the battery monomer 111 as a cuboid structure for example, the third direction being the up-down direction, and the third end surface 111d being the top surface of the battery monomer 111, the electrical connection of the battery monomer 111 is performed on the top surface of the battery monomer 111, which is conducive to reducing the difficulty of boxing of the PACK, and the battery 100 can be implemented to be boxed once after grouping, which is conducive to improving the assembly efficiency of the battery 100.

[0099] Of course, the present application is not limited thereto; in Figure 6 In the example of the battery monomer 111 being a hexahedral structure, taking the battery monomer 111 as a cuboid structure for example, the third direction being the up-down direction, and the third end surface 111d being the top surface of the battery monomer 111, the electrical connection of the battery monomer 111 is performed on the top surface of the battery monomer 111, which is conducive to reducing the difficulty of boxing of the PACK, and the battery 100 can be implemented to be boxed once after grouping, which is conducive to improving the assembly efficiency of the battery 100.

[0100] In some embodiments, as shown in Figure 3 and Figure 8 The normal projection of the pressure relief structure 1111 of the two rows of battery rows 11 of the same battery group 1 along the relative arrangement direction of the two rows of battery rows 11 (for example, the BB' direction in Figure 3 ) is staggered, at least part of the normal projection of the pressure relief structure 1111 of the two rows of battery rows 11 of the same battery group 1 along the arrangement direction of the two rows of battery rows 11 does not overlap, when one of the battery monomers 111 discharges the discharge through the pressure relief structure 1111, at least part of the discharge can not be sprayed to the other battery monomer 111 arranged opposite to the battery monomer 111, which is conducive to avoiding causing the other battery monomer 111 to lose control, and reducing the rate of internal thermal runaway spread of the battery 100; when the two opposite battery monomers 111 respectively discharge the discharge through the pressure relief structure 111, it is conducive to avoiding the mutual spraying when the battery monomers 111 corresponding in thickness on both sides discharge the discharge, so as to avoid the thermal influence of other battery monomers 111 on the battery monomers 111, so as to further reduce the probability of thermal spread.

[0101] In some embodiments, as shown in Figure 8As shown, the pressure relief structures 1111 of the two rows of battery bars 11 in the same battery pack 1 are staggered in the length direction of the battery bar 11 to facilitate the arrangement of the pressure relief structures 1111 of the individual battery cells 111. Of course, this application is not limited to this; in other embodiments, the pressure relief structures 1111 of the two rows of battery bars 11 in the same battery pack 1 are staggered in the height direction of the battery bar 11 (e.g., Figure 3 The CC' direction is offset.

[0102] In some embodiments, such as Figure 9 As shown, the pressure relief structure 1111 is located in the middle of the first end face 111a. The orthographic projections of the battery cells 111 of the two rows of battery bars 11 in the same battery pack 1 along the relative arrangement direction of the two rows of battery bars 11 can be staggered to ensure that the orthographic projections of the pressure relief structure 1111 of the two rows of battery bars 11 in the same battery pack 1 along the relative arrangement direction of the two rows of battery bars 11 are staggered. At this time, multiple battery cells 111 can adopt the same specifications.

[0103] For example, the pressure relief structure 1111 is located in the middle of the first end face 111a, which can be understood as: 1. The pressure relief structure 111 is located in the middle of the first end face 111a along the length direction of the battery pack 11, such as Figure 9 As shown, at this time, the battery cells 111 of the two rows of battery bars 111 in the same battery pack 1 can be staggered along the length direction of the battery bar 111; 2. The pressure relief structure 111 is located in the middle of the first end face 111a in the height direction of the battery bar 11, at this time, the battery cells 111 of the two rows of battery bars 111 in the same battery pack 1 can be staggered along the height direction of the battery bar 111; 3. The pressure relief structure 111 is located in the middle of the first end face 111a in both the length and height directions of the battery bar 11, at this time, the battery cells 111 of the two rows of battery bars 111 in the same battery pack 1 can be staggered along the height direction and / or length direction of the battery bar 111.

[0104] Of course, this application is not limited to this; for example, the battery cells 111 of the two rows of battery bars 11 in the same battery pack 1 can be arranged facing each other. In this case, the pressure relief structure 1111 can be set away from the middle of the battery cell 111 in the length or height direction of the battery bar 11, which can also make the pressure relief structures 1111 of the two rows of battery bars 11 in the same battery pack 1 staggered.

[0105] In some embodiments, such as Figure 3 As shown, each battery pack 11 includes components along the length direction of the battery pack 11 (e.g., Figure 3 Multiple battery cells 111 arranged in the AA' direction in the battery pack 11 are convenient to meet the voltage and other requirements of the battery pack 11.

[0106] It can be understood that when the battery row 11 includes a plurality of battery monomers 111, the battery monomers 111 of the two rows of battery rows 11 of the same battery group 1 are staggered, which can be understood as the corresponding battery monomers 111 of the two rows of battery rows 11 are staggered; the number of battery monomers 111 of the two rows of battery rows 11 of the same battery group 1 can be equal or unequal.

[0107] In some embodiments, as shown in FIG. 1, a plurality of battery groups 1 are arranged along the height direction of the battery row 11 to constitute a battery unit 2, which facilitates the compact arrangement of the plurality of battery groups 1, and reasonably utilizes the internal space 410 of the battery 100, thereby improving the space utilization rate. Figure 3

[0108] In addition, when the battery monomer 111 is arranged in a flat manner as described below, it is beneficial to reduce the height of the battery unit 2. It can be understood that the battery 100 includes one or more battery units 2.

[0109] In some embodiments, as shown in FIG. 1, the number of battery groups 1 included in the battery unit 2 is less than the number of battery monomers 111 included in the battery row 11. Thus, under the premise of ensuring the arrangement of the battery row 11, it is beneficial to reduce the extrusion force borne by the battery row 11 in the height direction, and to reduce the impact of the extrusion force on the degree of violence of the battery monomer 111 when discharging the discharge material. Figure 3

[0110] In some embodiments, as shown in FIG. 1, the number of battery groups 1 included in the battery unit 2 is 1-3, i.e., the number of battery groups 1 included in the battery unit 2 is one, or two, or three. Thus, under the premise of ensuring the arrangement of the battery row 11, it is also beneficial to reduce the extrusion force borne by the battery row 11 in the height direction, and to reduce the impact of the extrusion force on the degree of violence of the battery monomer 111 when discharging the discharge material. Figure 3

[0111] In some embodiments, as shown in FIG. 1, the thickness direction of the battery monomer 111 is the same as the height direction of the battery 100, the thickness of the battery monomer 111 is less than the length of the battery monomer 111, and the thickness of the battery monomer 111 is less than the width of the battery monomer 111. Thus, when the height direction of the battery 100 is the upward and downward direction, the battery monomer 111 is arranged in a flat manner, which can reduce the height of the gravity center of the battery monomer 111 and reduce the spatter range of the battery monomer 111. Figure 3

[0112] ​​​​It can be understood that the lower the center of gravity of the battery monomer 111, the lower the height of the battery monomer 111 when it is sprayed through the pressure relief structure 1111 (such as the explosion-proof valve), thereby reducing the influence range of the battery monomer 111 in the up-down direction, and at the same time, the distance that the battery monomer 111 can spray is smaller, which is beneficial to improve the safety performance. For example, when the battery monomer 111 is discharged through the pressure relief structure 1111, due to the flat arrangement of the battery monomer 111, the height of the pressure relief structure 1111 can be reduced, which can effectively reduce the height of the pressure relief structure 1111, thereby reducing the diffusion area and the spraying area, and improving the safety performance of the battery 100 as a whole.

[0113] In Figure 3 In an example, the battery monomer 111 is arranged flat, the pressure relief structure 1111 is located at the first end face 111a, the first end face 111a is vertically arranged, and the electrical connection end 1112 can be located at the second end face 111b, or at the third end face 111d, or at the fourth end face 111e, the second end face 111b is vertically arranged, the third end face 111d is the top face or the bottom face of the battery monomer 111, and the fourth end face 111e is the side face of the battery monomer 111, and the fourth end face 111e is also vertically arranged; of course, the third end face 111a can be the end face of the battery monomer 111 in the height direction, and the fourth end face 111e is the end face of the battery monomer 111 in the length direction.

[0114] Optionally, the battery monomer 111 is a ternary lithium battery 100, and the ternary lithium battery 100 has a smaller expansion rate than the lithium iron phosphate battery 100. Therefore, the expansion deformation amount of the ternary lithium battery 100 is relatively small, and the constraint requirement for the expansion deformation of the ternary lithium battery 100 is relatively low, so that the ternary lithium battery 100 can adapt to the scenario of the flat arrangement of the battery monomer 111.

[0115] In some embodiments, as Figure 10 (a) and Figure 10 show that the battery 100 includes a battery pack 1 and a discharge member 31, the discharge member 31 is arranged between two battery rows 11 of the same battery pack 1, and the discharge member 31 defines a discharge cavity 3a, the discharge cavity 3a is used to receive at least one group of battery monomers 111 discharged from the pressure relief structure 1111. Therefore, the discharge cavity 3a can collect the discharge of the battery monomer 111, so as to realize the storage or centralized discharge of the discharge of the battery monomer 111, and avoid the leakage of particles in the discharge of the battery monomer 111 to other areas such as the electrical connection area between two battery monomers 111, etc. to cause insulation failure.

[0116] It can be understood that the discharge cavity 3a can directly receive the discharge of the battery monomer 111, or indirectly receive the discharge of the battery monomer 111. In addition, the discharge cavity 3a can be used only for the storage of the discharge of the battery monomer 111, can be used in the case of less discharge of the battery monomer 111, and the discharge is basically not accumulated, for example, the discharge cavity 3a has no discharge port; of course, the discharge cavity 3a can also discharge the discharge after receiving the discharge, and can be used in the case of more discharge of the battery monomer 111, for example, the discharge cavity 3a is formed with a discharge port, so that the discharge in the discharge cavity 3a is discharged through the discharge port.

[0117] In some embodiments, a plurality of battery groups 1 are arranged along the height direction of the battery row 11 to form a battery unit 2, and at this time, the discharge cavity 3a can be used to receive the discharge of the battery unit 2, so that the plurality of battery groups 1 of the battery unit 2 can share the same discharge part 31, so as to reduce the number of discharge parts 31 of the battery 100 and simplify the structure of the battery 100.

[0118] Optionally, as shown in Figure 16 , the discharge cavity 3a is one, and the discharge part 31 on the two sides of the two battery rows 11 shares the same discharge cavity 3a; or, as shown in Figure 17 , the discharge cavity 3a is multiple, and the battery rows 11 on the opposite sides of the discharge part 31 can correspond to different discharge cavities 3a respectively.

[0119] In some embodiments, as shown in Figure 14 and Figure 15 , the side of the discharge part 31 facing the battery row 11 is provided with an inlet area 3b corresponding to the pressure relief structure 1111, and the discharge cavity 3a is adapted to receive the discharge from the corresponding pressure relief structure 1111 through the inlet area 3b, so as to facilitate the smooth reception of the discharge.

[0120] Optionally, the inlet area 3b can be a discharge inlet formed on the discharge part 31, or the inlet area 3b can also be a weak area formed on the discharge part 31, which can ensure that the discharge of the battery monomer 111 is discharged to the discharge cavity 3a through the inlet area 3b when the battery monomer 111 is relieved.

[0121] In some embodiments, as shown in Figure 10 (a), Figure 14 and Figure 15 , the orthographic projection of the opposite sides of the inlet area 3b along the relative arrangement direction of the two battery rows 11 is staggered in the length direction of the discharge part 31, and the projection of the opposite sides of the inlet area 3b along the relative arrangement direction of the two battery rows 11 in the thickness direction of the heat management assembly 3 is at least partially not overlapped, which is beneficial to avoid the opposite sides of the corresponding battery monomers 111 from being sprayed at the same time, so as to further reduce the probability of heat spread.

[0122] It can be understood that, in the example of the solid line, the inlet area 3b of the opposite side is arranged staggered in the length direction of the discharge member 31, while the inlet area 3b of the opposite side is arranged directly opposite in the length direction of the discharge member 31. Figure 15

[0123] In some embodiments, the outer peripheral area of each inlet area 3b is provided with an insulating member, so as to achieve insulation between the battery monomer 111 and the thermal management assembly 3, so as to further ensure the safety of the battery monomer 111 in use.

[0124] For example, when the inlet area 3b is a discharge inlet, the insulating member can be provided at least on the peripheral wall of the discharge inlet.

[0125] In some embodiments, the battery 100 includes a discharge member 31 and a box component 4, the box component 4 includes a side wall 41 and a partition beam 42, the partition beam 42 is located in the space 410 surrounded by the side wall 41, so as to divide the space 410 into a plurality of accommodation cavities 410a, the accommodation cavities 410a are used to accommodate the battery row 11, and the partition beam 42 is configured as the discharge member 31. Wherein, the box component 4 can be Figures 19-24 the box component 4 shown in the

[0126] It can be seen that the partition beam 42 can be used to receive the discharge of the battery row 11, and at the same time the partition beam 42 can divide the space 410 into a plurality of accommodation cavities 410a, so as to facilitate the arrangement of the battery row 11, and also can enhance the structural strength of the box component 4, realizes the one thing of the partition beam 42. Multiple uses, facilitate to reduce the number of beam structures of the battery 100 on the premise of ensuring the structural strength of the box component 4, so as to improve the utilization rate of the space 410 of the box component 4, so that the structure of each component inside the box component 4 is more compact, which is beneficial to improve the energy density of the battery 100.

[0127] In some embodiments, as shown in Figure 12 and Figure 13 The battery row 11 includes a plurality of battery monomers 111 arranged in sequence along the length direction of the discharge member 31, and each battery monomer 111 respectively and individually discharges discharge to the discharge cavity 3a, so as to facilitate the discharge of the plurality of battery monomers 111 to be mutually interfered, such as one of the battery monomers 111 discharges discharge to the discharge cavity 3a, which will not affect whether the battery monomer 111 adjacent to it discharges discharge to the discharge cavity 3a, which is beneficial to further reduce the probability of thermal spread of the battery row 11, and improve the safety of the battery 100 in use.

[0128] ​For example, the battery monomer 111 is adapted to discharge the exhaust to the exhaust cavity 3a through the inlet area 3b of the exhaust piece 31, and each battery monomer 111 corresponds to an inlet area 3b, respectively.

[0129] Optionally, in the example of Figure 13 , the length of the battery row 11 is respectively provided with an end plate 112 at both ends to limit the movement of the entire battery row 11 in the length direction; of course, when a plurality of battery rows 11 are arranged along the height of the exhaust piece 31, the length of the plurality of battery rows 11 can share the same end plate 112.

[0130] Optionally, in the example of Figure 13 , the battery row 11 includes a plurality of battery monomers 111, and a heat insulation piece 113 is arranged between adjacent two battery monomers 111.

[0131] In some embodiments, as shown in Figure 10 (b), the battery 100 includes a battery group 1 and a heat exchange piece 32, the heat exchange piece 32 is arranged between two battery rows 11 of the same battery group 1, and the heat exchange piece 32 is adapted to exchange heat with at least one of the two battery rows 11; for example, the heat exchange piece 32 exchanges heat with the battery monomer 111 to take away the heat of the battery monomer 111, or the heat exchange piece 32 is used to transfer heat to the battery monomer 111 to achieve preheating of the battery monomer 111, etc., so as to make the battery monomer 111 have a suitable working temperature, so as to ensure the service life of the battery monomer 111.

[0132] Optionally, the heat exchange piece 32 directly exchanges heat with the battery row 11; or the heat exchange piece 32 indirectly exchanges heat with the battery row 11 through other heat conduction pieces.

[0133] In some embodiments, the battery 100 includes a heat exchange piece 32 and a box component 4, the box component 4 includes a side wall plate 41 and a partition beam 42, the partition beam 42 is located in a space 410 surrounded by the side wall plate 41, so as to divide the space 410 into a plurality of accommodation cavities 410a, the accommodation cavities 410a are used to accommodate the battery row 11, and the partition beam 42 is configured as the heat exchange piece 32. Wherein, the box component 4 can be Figures 19-24 the box component 4 shown in

[0134] It can be seen that the partition beam 42 can be used to exchange heat with the battery row 11, and at the same time, the partition beam 42 can divide the space 410 into a plurality of accommodation cavities 410a, so as to facilitate the arrangement of the battery row 11, and can also enhance the structural strength of the box component 4, realizing the one thing of the partition beam 42. Multiple uses, under the premise of ensuring the structural strength of the box component 4, appropriately reducing the number of beam structures of the battery 100, so as to improve the utilization rate of the space 410 of the box component 4, so that the structure of each component inside the box component 4 is more compact, which is beneficial to improve the energy density of the battery 100.

[0135] In some embodiments, as shown in Figure 14 The battery 100 further comprises a thermal management assembly 3 arranged between two battery rows 11 of the same battery pack 1, and the thermal management assembly 3 comprises a discharge member 31 for receiving at least one set of discharges discharged from the pressure relief structure 1111 of the battery pack 1, and the discharge member 31 is provided with a heat exchange member 32 on both sides of the thickness of the discharge member 31, and each heat exchange member 32 is arranged between the discharge member 31 and the battery row 11, so that the discharge member 31 can exchange heat with two heat exchange members 32 at the same time, and each heat exchange member 32 is adapted to exchange heat with the battery row 11 on the corresponding side, for example, the heat exchange member 32 exchanges heat with the battery monomer 111 to take away the heat of the battery monomer 111, or the heat exchange member 32 is used to transfer heat to the battery monomer 111 to achieve preheating of the battery monomer 111, etc., so as to make the battery monomer 111 have a suitable working temperature, so as to ensure the service life of the battery monomer 111.

[0136] Wherein, at least part of the discharge member 31 is adapted to exchange heat with the heat exchange member 32, that is, part of the discharge member 31 exchanges heat with the heat exchange member 32, or the entire discharge member 31 exchanges heat with the heat exchange member 32; for example, the discharge is the discharge when the battery monomer 111 is in thermal runaway, the discharge is discharged through the pressure relief structure 1111 of the battery monomer 111, and the temperature of the discharge is relatively high. The heat exchange member 32 exchanges heat with the discharge in the discharge member 31, so that the heat exchange member 32 not only can dissipate the heat of the discharge in time to avoid the heat being concentrated near the eruption position of the battery monomer 111 for a long time, thereby improving the safety of the battery monomer 111, but also can cool the discharge to reduce the probability of the spread of the thermal runaway of the battery monomer 111, thereby further effectively improving the safety of the battery monomer 111 during the thermal runaway discharge.

[0137] It can be understood that at least part of the discharge member 31 is adapted to directly exchange heat with the heat exchange member 32, for example, at least part of the discharge member 31 directly contacts the heat exchange member 32; or at least part of the discharge member 31 is adapted to indirectly exchange heat with the heat exchange member 32, for example, at least part of the discharge member 31 indirectly cooperates with the heat exchange member 32 through a heat conduction member.

[0138] As can be seen, the thermal management component 3 integrates the emission component 31 and the heat exchange component 32, which has good maintainability and helps to save the space occupied by the thermal management component 3 410, thereby improving the space utilization of the battery 100. In addition, the heat exchange component 32 can also exchange heat with at least part of the emission component 31 to dissipate the heat of the emission in a timely manner, so as to avoid the heat from being concentrated near the emission location of the battery cell 111 for a long time. At the same time, the heat exchange component 32 can also cool down the emission to reduce the probability of thermal runaway propagation of the battery cell 111, thereby effectively improving the safety of the battery cell 111 during thermal runaway discharge and ensuring the safe and reliable use of the battery cell 111.

[0139] Furthermore, along the thickness direction of the thermal management component 3, the heat exchanger 32 is disposed on the outside of the discharge component 31, so as to be relatively close to the battery cell 111 disposed on the outside of the thickness of the thermal management component 3. That is to say, the thermal management component 3 and the battery cell 111 are arranged along the thickness direction of the thermal management component 3, and in the thickness direction of the thermal management component 3, the heat exchanger 32 is closer to the battery cell 111 than the discharge component 31, so as to further improve the heat exchange effect of the heat exchanger 32 on the battery cell 111. Moreover, at this time, the discharge component 31 is located on the side of the heat exchanger 32 away from the battery cell 111. This not only allows the heat exchanger 32 to still exchange heat with the discharge component 31, but also allows the heat exchanger 32 to separate the battery cell 111 from the discharge component 31. Thus, the heat exchanger 32 can separate the battery cell 111 from the discharge, so as to effectively avoid the heat of the discharge from causing adverse thermal effects on the battery cell 111, thereby ensuring the reliable use of the battery cell 111.

[0140] In this application, the heat exchanger 32 and the discharge component 31 can be separate parts, which can be assembled together; or, the heat exchanger 32 and the discharge component 31 can be an integral part, for example, the thermal management component 3 can be an integral extruded part. Thus, the thermal management component 3 can be processed in a suitable manner according to actual needs.

[0141] In some embodiments, such as Figures 11-14 As shown, the thermal management component 3 extends into a long strip shape, then the length of the thermal management component 3 (for example, Figure 11 The AA' direction in the middle is greater than the height of the thermal management component 3 (e.g., Figure 11 (in the CC' direction), while the height of the thermal management component 3 is greater than the thickness of the thermal management component 3, and the heat exchange element 32 and the discharge element 31 are along the thickness direction of the thermal management component 3 (e.g., in the CC' direction). Figure 11If the heat exchange member 32 and the exhaust member 31 are arranged in the width direction of the thermal management assembly 3 (i.e., the BB' direction in FIG. 1), the arrangement of the heat exchange member 32 and the exhaust member 31 is relatively simple, which facilitates the processing and manufacturing of the thermal management assembly 3. Meanwhile, the areas of the wall surfaces on both sides of the thickness of the thermal management assembly 3 are relatively large relative to the areas of the remaining wall surfaces, which facilitates increasing the area of the heat exchange member 32 for heat exchange with the battery monomer 111, thereby further ensuring the working temperature of the battery monomer 111. Meanwhile, it is beneficial to increase the area of the heat exchange member 32 for heat exchange with the exhaust member 31 and / or increase the area of the exhaust member 31 for heat exchange with the heat exchange member 32, thereby increasing the heat conduction area of the heat exchange member 32 and the exhaust member 31, so as to improve the heat dissipation effect of the heat exchange member 32 on the exhaust and improve the cooling effect of the heat exchange member 32 on the exhaust.

[0142] It should be noted that, in the description of the present application, "and / or" is merely a description of the association relationship of the associated objects, which means that there can be three relationships, for example, A and / or B, which can represent the three cases of A alone, A and B together, and B alone.

[0143] For example, in the example of FIG. 1, the thermal management assembly 3 can extend as a beam structure, which can enhance the structural strength and stability of the battery 100. Figure 12

[0144] Of course, the arrangement of the heat exchange member 32 and the exhaust member 31 is not limited to this; in other embodiments, the heat exchange member 32 and the exhaust member 31 are arranged in sequence along the width direction of the thermal management assembly 3; but not limited to this.

[0145] In some embodiments, as shown in FIG. 1, the heat exchange member 32 and the exhaust member 31 are arranged in the width direction of the thermal management assembly 3 (i.e., the BB' direction in FIG. 1), the arrangement of the heat exchange member 32 and the exhaust member 31 is relatively simple, which facilitates the processing and manufacturing of the thermal management assembly 3. Meanwhile, the areas of the wall surfaces on both sides of the thickness of the thermal management assembly 3 are relatively large relative to the areas of the remaining wall surfaces, which facilitates increasing the area of the heat exchange member 32 for heat exchange with the battery monomer 111, thereby further ensuring the working temperature of the battery monomer 111. Meanwhile, it is beneficial to increase the area of the heat exchange member 32 for heat exchange with the exhaust member 31 and / or increase the area of the exhaust member 31 for heat exchange with the heat exchange member 32, thereby increasing the heat conduction area of the heat exchange member 32 and the exhaust member 31, so as to improve the heat dissipation effect of the heat exchange member 32 on the exhaust and improve the cooling effect of the heat exchange member 32 on the exhaust. Figure 14 Figures 16-18 In some embodiments, as shown in FIG. 1, the heat exchange member 32 and the exhaust member 31 are arranged in the width direction of the thermal management assembly 3 (i.e., the BB' direction in FIG. 1), the arrangement of the heat exchange member 32 and the exhaust member 31 is relatively simple, which facilitates the processing and manufacturing of the thermal management assembly 3. Meanwhile, the areas of the wall surfaces on both sides of the thickness of the thermal management assembly 3 are relatively large relative to the areas of the remaining wall surfaces, which facilitates increasing the area of the heat exchange member 32 for heat exchange with the battery monomer 111, thereby further ensuring the working temperature of the battery monomer 111. Meanwhile, it is beneficial to increase the area of the heat exchange member 32 for heat exchange with the exhaust member 31 and / or increase the area of the exhaust member 31 for heat exchange with the heat exchange member 32, thereby increasing the heat conduction area of the heat exchange member 32 and the exhaust member 31, so as to improve the heat dissipation effect of the heat exchange member 32 on the exhaust and improve the cooling effect of the heat exchange member 32 on the exhaust.

[0146] ​​The positions of the inlet 32a and the outlet 32b can be set according to actual requirements. For example, the heat exchange member 32 is extended in a long strip shape, the inlet 32a is located at one end of the length of the heat exchange member 32, and the outlet 32b is located at the other end of the length of the heat exchange member 32, so as to ensure the length of the heat exchange path of the heat exchange cavity 3c.

[0147] Optionally, the heat exchange member 32 defines the heat exchange cavity 3c alone, or the discharge member 31 and the heat exchange member 32 jointly define the heat exchange cavity 3c. Optionally, the heat exchange medium is a gas, or a liquid, or a gas-liquid mixture. For example, the heat exchange medium is water or refrigerant, but is not limited thereto.

[0148] In some embodiments, as shown in Figure 18 , the heat exchange cavity 3c includes a plurality of heat exchange branch cavities, which is beneficial to increase the contact area of the heat exchange member 32 and the heat exchange medium, thereby enhancing the heat exchange effect of the heat exchange member 32 on the battery monomer 111 and the discharge cavity 3a.

[0149] In some embodiments, as shown in Figure 14 and Figure 18 , the heat exchange member 32 has an inlet 32a and an outlet 32b, the inlet 32a and the outlet 32b are respectively communicated with the heat exchange cavity 3c, each heat exchange branch cavity is respectively communicated with the inlet 32a and the outlet 32b, then the plurality of heat exchange branch cavities are arranged in parallel, the heat exchange medium at the inlet 32a is distributed into the plurality of heat exchange branch cavities, and the heat exchange medium in each heat exchange branch cavity respectively flows out through the outlet 32b, so as to ensure the heat exchange effect of each heat exchange branch cavity.

[0150] Of course, in other embodiments of the present application, the plurality of heat exchange branch cavities can also be arranged in series, or at least two of the plurality of heat exchange branch cavities 111 are arranged in series and at least two of the plurality of heat exchange branch cavities are arranged in parallel.

[0151] In some embodiments, as shown in Figure 18 , a heat-conducting material member is arranged in the heat exchange cavity 3c, which is beneficial to increase the contact area of the heat exchange member 32 and the heat exchange medium, thereby enhancing the heat exchange effect of the heat exchange member 32 on the battery monomer 11 and the discharge cavity 3a, and can also enhance the structural strength of the heat exchange cavity 3c. Optionally, the heat-conducting material member is a metal member.

[0152] Optionally, in the example of Figure 18 , the heat-conducting material member divides the heat exchange cavity 3c into a plurality of heat exchange branch cavities.

[0153] It can be understood that the plurality of heat exchange branch cavities divided by the heat-conducting member material can be arranged in series and / or in parallel. Of course, the present application is not limited thereto; for example, the heat-conducting material member is formed as a flow guide rib.

[0154] In some embodiments, as shown in Figure 14As shown, the outer side plate 33 of the thermal management assembly 3 is configured as the heat exchange member 32, and the outer side plate 33 has an inlet area 3b corresponding to the pressure relief structure 1111. The discharge member 31 defines a discharge cavity 3a, which is adapted to receive the discharge from the corresponding pressure relief structure 1111 through the inlet area 3b, so as to ensure smooth release of the discharge, and the heat exchange member 32 can participate in forming the outer side wall of the thermal management assembly 3, so as to ensure the heat exchange effect of the heat exchange member 32 on the battery monomer 111.

[0155] Optionally, the discharge member 31 alone defines the discharge cavity 3a, or the discharge member 31 and the heat exchange member 32 jointly define the discharge cavity 3a.

[0156] In some embodiments, a heat conduction member is arranged between the heat exchange member 32 and the discharge member 31, so as to ensure the heat exchange efficiency between the heat exchange member 32 and the discharge member 31, thereby ensuring the cooling effect of the heat exchange member 32 on the discharge. Optionally, the heat conduction member is a heat conduction glue or a heat conduction plate, and the material of the heat conduction plate can be selected according to actual needs to have a suitable heat conductivity, for example, the heat conduction member is a metal member.

[0157] It can be understood that when the heat exchange member 32 and the discharge member 31 are integrated, the heat conduction member between the heat exchange member 32 and the discharge member 31 can be formed as a heat conduction wall, and the opposite sides of the heat conduction wall can be the heat exchange cavity 3c and the discharge cavity 3a, respectively.

[0158] In some embodiments, as shown, Figures 19-22 As shown, the battery 100 further comprises a box component 4, which comprises a side wall plate 41 and a partition beam 42. The partition beam 42 is located in a space 410 surrounded by the side wall plate 41, so as to divide the space 410 into a plurality of accommodation cavities 410a for accommodating the battery row 11. The partition beam 42 has the battery monomer 111 on both sides of the thickness of the partition beam 42, and the partition beam 42 is configured as the thermal management assembly 3.

[0159] It can be seen that the partition beam 42 can not only divide the space 410 into a plurality of accommodation cavities 410a, but also enhance the structural strength of the box component 4, thereby realizing the one thing with multiple uses of the thermal management assembly 3. On the premise of ensuring the structural strength of the box component 4, the number of beam structures of the battery 100 can be appropriately reduced, so as to improve the utilization rate of the space 410 of the box component 4, make the structure of each component inside the box component 4 more compact, and be beneficial to improving the energy density of the battery 100.

[0160] Optionally, the lengthwise ends of the partition beam 42 are fixedly connected with the corresponding side walls 41 respectively; or, the box component 4 comprises a top cover 43, and the partition beam 42 is fixedly connected with the top cover 43; or, the box component 4 comprises a bottom plate 44, and the partition beam 42 is fixedly connected with the bottom plate 44; or, the box component 4 comprises the top cover 43 and the bottom plate 44, and the partition beam 42 is fixedly connected with at least one of the top cover 43 and the bottom plate 44.

[0161] It can be understood that, when the partition beam 42 is configured as the thermal management assembly 3, if the thermal management assembly 3 defines a heat exchange cavity 3c, and the heat exchange cavity 3c has an inlet 32a and an outlet 32b to enable the heat exchange medium to flow into the heat exchange cavity 3c through the inlet 32a and flow out of the heat exchange cavity 3c through the outlet 32b, different heat exchange paths or thermal management loops can be set according to the objects to which the partition beam 42 is fixedly connected, so as to realize the circulating flow of the heat exchange medium in the heat exchange paths; similarly, when the partition beam 42 is configured as the thermal management assembly 3, if the thermal management assembly 3 defines a discharge cavity 3a, and the discharge cavity 3a has a discharge inlet and a discharge outlet to enable the discharge to be received to flow into the discharge cavity 3a through the discharge inlet and flow out of the discharge cavity 3a through the discharge outlet, different discharge paths can be set according to the objects to which the partition beam 42 is fixedly connected, so as to realize the smooth discharge of the discharge.

[0162] Optionally, in the example of the box component 4 comprising the top cover 43 and the bottom plate 44, the partition beam 42 is fixedly connected with at least one of the top cover 43 and the bottom plate 44. Figure 24 In the example of the box component 4 comprising the top cover 43 and the bottom plate 44, the partition beam 42 is fixedly connected with at least one of the top cover 43 and the bottom plate 44, and the side wall 41 corresponding to at least one of the lengthwise ends of the partition beam 42 is formed with a discharge path in communication with the discharge cavity 3a.

[0163] For example, the lengthwise ends of the partition beam 42 are fixedly connected with the corresponding side walls 41 respectively, the discharge cavity 3a penetrates one of the lengthwise ends of the partition beam 42, and the side wall 41 corresponding to the above-mentioned one of the lengthwise ends of the partition beam 42 is formed with a discharge path in communication with the discharge cavity 3a; or, the discharge cavity 3a penetrates the lengthwise ends of the partition beam 42 respectively, and the side walls 41 of the lengthwise ends of the partition beam 42 are formed with discharge paths in communication with the discharge cavity 3a respectively.

[0164] In other embodiments, as shown in Figure 26 In the example of the box component 4 comprising the top cover 43 and the bottom plate 44, the partition beam 42 is fixedly connected with at least one of the top cover 43 and the bottom plate 44, and the side wall 41 corresponding to at least one of the lengthwise ends of the partition beam 42 is formed with a discharge path in communication with the discharge cavity 3a.

[0165] In some embodiments, as shown in Figure 20As shown, the partition beam 42 includes a longitudinal beam 421 extending along the length direction of the box member 4, the longitudinal beam 421 is configured as the thermal management assembly 3, and the thickness sides of the longitudinal beam 421 are respectively provided with the battery monomer 111.

[0166] In some embodiments, as shown in Figure 21 As shown, the partition beam 42 includes a transverse beam 422 extending along the width direction of the box member 4, the transverse beam 422 is configured as the thermal management assembly 3, and the thickness sides of the transverse beam 422 are respectively provided with the battery monomer 111.

[0167] In some embodiments, as shown in Figure 22 As shown, the partition beam 42 includes a longitudinal beam 421 extending along the length direction of the box member 4, the longitudinal beam 421 is configured as the thermal management assembly 3, and the thickness sides of the longitudinal beam 421 are respectively provided with the battery monomer 111.

[0168] Therefore, the thermal management assembly 3 can be formed as the transverse beam 422 and / or the longitudinal beam 421 in the box member 4, which facilitates flexible setting of the box member 4 to better meet the heat exchange requirements of the battery monomer 111.

[0169] In some embodiments, as shown in Figure 23 As shown, the box member 4 includes a top cover 43, and the thermal management assembly 3 is arranged on the top cover 43. The top cover 43 can be arranged on the top side of the accommodation cavity 410a, and the top cover 43 can apply a certain force to the thermal management assembly 3 to ensure stable installation of the thermal management assembly 3. For example, the thermal management assembly 3 can be fixedly connected with the top cover 43 (for example, the thermal management assembly 3 and the top cover 43 are fixed by threaded fasteners); of course, the thermal management assembly 3 can also be directly or indirectly abuttingly matched with the top cover 43.

[0170] In some embodiments, as shown in Figure 23 As shown, the box member 4 includes a bottom plate 44, and the thermal management assembly 3 is arranged on the bottom plate 44. The bottom plate 44 can be arranged on the lower side of the accommodation cavity 410a, so as to directly or indirectly support the battery monomer 111, and the bottom plate 44 can apply a certain force to the thermal management assembly 3 to ensure stable installation of the thermal management assembly 3. For example, the thermal management assembly 3 can be fixedly connected with the bottom plate 44 (for example, the thermal management assembly 3 and the bottom plate 44 are fixed by threaded fasteners); of course, the thermal management assembly 3 can also be directly or indirectly abuttingly matched with the bottom plate 44.

[0171] In some embodiments, as shown in Figure 23 As shown, the box member 4 includes a top cover 43 and a bottom plate 44, and the thermal management assembly 3 is arranged on at least one of the top cover 43 and the bottom plate 44 to ensure stable installation of the thermal management assembly 3.

[0172] Of course, the thermal management assembly 3 can also be not connected with the top cover 43 and the bottom plate 44.

[0173] In some embodiments, as shown in Figure 19 The battery 100 further comprises a box component 4 and a fixing member 5, the box component 4 defines a receiving cavity 410a for accommodating the battery rows 11, and the fixing member 5 is arranged in the box component 4, the fixing member 5 is arranged at the thickness side of the battery rows 11, and the fixing member 5 is in abutting engagement with all the outermost battery rows 11, i.e., the fixing member 5 is in abutting engagement with one side surface of all the outermost battery monomers 111, so as to apply a certain binding force to all the battery monomers 111 of the battery 100; when the fixing member 5 is in abutting engagement with the large surface of all the outermost battery monomers 111, the performance of the battery monomers 111 after swelling and deformation can be ensured to remain stable. The fixing member 5 is fixedly connected with the box component 4, so as to facilitate the reliable installation of the fixing member 5; for example, the fixing member 5 is fixedly connected with the side wall 41 of the box component 4.

[0174] For example, in the example shown in Figure 19 The fixing member 5 is arranged at the top side of all the battery rows 11, and the fixing member 5 is in direct or indirect abutting engagement with the large surface of all the uppermost battery rows 11, and when the battery monomers 111 swell, the fixing member 5 will be deformed and arch upward, so as to at least apply a downward force to the battery monomers 111 during swelling and deformation of the battery monomers 111.

[0175] Optionally, the fixing member 5 is formed in a plate structure, so as to simplify the structure of the fixing member 5; of course, the fixing member 5 can also be in a grid structure, or a mesh structure, etc.

[0176] According to the power consuming device 200 of the second aspect of the present application, the battery 100 according to the first aspect of the present application is used to provide power for the power consuming device 200. Therefore, by using the above-mentioned battery 100, the use safety and reliability of the power consuming device 200 can be improved.

[0177] Optionally, as shown in Figure 27 When the battery 100 is used for a vehicle, the battery 100 can be arranged at the bottom, or the head, or the tail of the vehicle. The battery 100 can be used for power supply of the vehicle, for example, the battery 100 can be used as the operating power supply of the vehicle. The vehicle can further comprise a controller and a motor, the controller is used to control the battery 100 to supply power to the motor, for example, for the working power demand of the vehicle during starting, navigation and driving.

[0178] In some embodiments of the present application, the battery 100 can not only be used as the operating power supply of the vehicle, but also be used as the driving power supply of the vehicle, instead of or partially instead of fuel or natural gas to provide driving power for the vehicle.

[0179] Other configurations and operations of the power utilization device 200 according to the embodiments of the present application are known to those of ordinary skill in the art, and are not described in detail here.

[0180] For example, as shown in Figures 11-13 and Figure 23 The battery 100 includes a plurality of battery units 2 arranged in sequence along a second direction, each battery unit 2 including a plurality of battery groups 1 arranged in sequence along a third direction, each battery group 1 including two battery rows 11 arranged in sequence along the second direction, each battery row 11 including a plurality of battery monomers 111 arranged in sequence along a first direction; for each battery unit 2, a heat management assembly 3 is provided between the opposite two battery groups 1, and in the third direction, the plurality of battery groups 1 located on the same side of the heat management assembly 3 share the same heat management assembly 3. Wherein the first direction, the second direction and the third direction are perpendicular to each other, the number of battery groups 1 included in the battery unit 2 is less than the number of battery monomers 111 included in the battery row 11.

[0181] The side surface of each battery monomer 111 facing the other battery row 11 in the same battery group 1 is a first end surface 111a, the first end surface 111a has a pressure relief structure 1111, the side surface of each battery monomer 111 facing away from the other battery row 11 in the same battery group 1 is a second end surface 111b, and the electrical connection end 1112 of the battery monomer 111 is provided on the second end surface 111b; the heat management assembly 3 includes a discharge member 31, the discharge member 31 defines a discharge cavity 3a, the discharge cavity 3a is used to receive the discharge of the plurality of battery groups 1 of the battery unit 2 from the pressure relief structure 1111; the heat management assembly 3 further includes a heat exchange member 32, at least part of the discharge cavity 3a is adapted to exchange heat with the heat exchange member 32, the heat exchange member 32 is arranged between the discharge cavity 3a and the battery row 11, and the heat exchange member 32 is adapted to exchange heat with the plurality of battery rows 11 on the corresponding side.

[0182] The battery 100 further includes a box component 4, the box component 4 includes a side wall 41 and a partition beam 41, the partition beam 42 is located in the space 410 surrounded by the side wall 41 to divide the space 410 into a plurality of accommodation cavities 410a, the accommodation cavities 410a are used to accommodate the battery row 11, and the partition beam 42 is configured as the heat management assembly 3; wherein the partition beam 42 includes a longitudinal beam 421 extending along the length direction of the box component 4, the longitudinal beam 421 is configured as the heat management assembly 3, and the side wall 41 is formed with a discharge path in communication with the discharge cavity 3a of the longitudinal beam 421, so as to facilitate the discharge of the discharge of the battery monomer 111 out of the battery 100.

[0183] Although the embodiments of the present application have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A battery, wherein, include: At least one battery pack, the battery pack comprising two rows of battery bars, each row of battery bars comprising at least one battery cell, the surface of the battery cell facing the other battery bar in the same battery pack being a first end face, the first end face having a pressure relief structure, and the electrical connection terminal of the battery cell being disposed on other surfaces of the battery cell other than the first end face.

2. The battery according to claim 1, wherein, The surface of the battery cell facing away from the other battery bank in the same battery pack is the second end face, and the electrical connection terminal of the battery cell is located on the second end face.

3. The battery according to claim 1, wherein, The surface of the battery cell facing away from the other battery bank in the same battery pack is the second end face, the surface of the battery cell located between the first end face and the second end face is the peripheral wall surface, and the electrical connection end of the battery cell is located on the peripheral wall surface.

4. The battery according to claim 3, wherein, Each row of battery packs includes a plurality of battery cells arranged along a first direction. Two battery packs in the same battery pack are arranged along a second direction. The peripheral wall includes two third end faces arranged opposite each other along a third direction. The electrical connection end of the battery cell is located on the third end face. The first direction, the second direction and the third direction are perpendicular to each other.

5. The battery according to claim 1, wherein, The pressure relief structures of the two rows of battery banks in the same battery pack are staggered in orthographic projection along the relative arrangement direction of the two rows of battery banks.

6. The battery according to claim 5, wherein, The pressure relief structures of the two rows of battery banks in the same battery pack are staggered in the length or height direction of the battery banks.

7. The battery according to claim 5, wherein, The pressure relief structure is located in the middle of the first end face, and the orthographic projections of the battery cells in the two rows of battery bars of the same battery pack are staggered along the relative arrangement direction of the two rows of battery bars.

8. The battery according to claim 7, wherein, The individual cells of the two rows of the same battery pack are staggered along the length of the battery pack.

9. The battery according to claim 1, wherein, Each row of the battery pack includes a plurality of battery cells arranged along the length of the battery pack.

10. The battery according to claim 9, wherein, Multiple battery packs are arranged along the height direction of the battery row to form a battery cell.

11. The battery according to claim 10, wherein, The number of battery packs included in the battery cell is less than the number of individual battery cells included in the battery bar.

12. The battery according to claim 10, wherein, The number of battery packs included in the battery cell is 1 to 3.

13. The battery according to claim 1, wherein, The thickness direction of the battery cell is the same as the height direction of the battery.

14. The battery according to claim 13, wherein, The battery cell is a ternary lithium battery.

15. The battery according to any one of claims 1-14, wherein, Also includes: A discharge device is disposed between two battery banks of the same battery pack and defines a discharge chamber for receiving emissions from at least one battery pack discharged from the pressure relief structure.

16. The battery according to claim 15, wherein, The discharge component has an inlet area on its side facing the battery pack, which corresponds to the pressure relief structure. The discharge chamber is adapted to receive emissions from the corresponding pressure relief structure through the inlet area.

17. The battery according to claim 16, wherein, The orthographic projections of the inlet areas on opposite sides along the relative arrangement direction of the two rows of battery packs are offset along the length direction of the discharge member.

18. The battery according to claim 16, wherein, Each of the aforementioned entry areas has an insulating element on its outer periphery.

19. The battery according to claim 15, wherein, Also includes: The housing component includes a side panel and a partition beam. The partition beam is located within the space enclosed by the side panel to divide the space into multiple accommodating cavities for accommodating the battery pack. The partition beam is configured as the discharge component.

20. The battery according to any one of claims 1-14, wherein, Also includes: A heat exchanger is disposed between two battery banks of the same battery pack and is adapted to exchange heat with at least one of the two battery banks.

21. The battery according to claim 20, wherein, Also includes: The housing component includes a side panel and a partition beam. The partition beam is located within the space enclosed by the side panel to divide the space into multiple accommodating cavities. The accommodating cavities are used to accommodate the battery pack. The partition beam is configured as the heat exchange element.

22. The battery according to any one of claims 1-14, wherein, Also includes: A thermal management assembly is disposed between two battery banks of the same battery pack, and the thermal management assembly further includes a discharge element and a heat exchange element. The discharge element is used to receive emissions from at least one set of battery banks discharged from the pressure relief structure. The heat exchange element is provided on both sides of the thickness of the discharge element. Each heat exchange element is disposed between the discharge element and the battery bank, and each heat exchange element is adapted to exchange heat with the battery bank on the corresponding side. At least a portion of the discharge element is adapted to exchange heat with the heat exchange element.

23. The battery according to claim 22, wherein, The heat exchanger defines a heat exchange cavity having an inlet and an outlet to allow the heat exchange medium to flow into the heat exchange cavity through the inlet and out through the outlet. The heat exchange cavities on both sides of the thickness of the discharge element are connected in series or in parallel.

24. The battery according to claim 22, wherein, The outer side plate of the thermal management component is configured as the heat exchanger, and the outer side plate has an inlet area corresponding to the pressure relief structure. The discharge element defines a discharge chamber, which is adapted to receive emissions discharged from the corresponding pressure relief structure through the inlet area.

25. The battery according to claim 22, wherein, A heat-conducting element is provided between the heat exchange element and the discharge element.

26. The battery according to claim 22, wherein, Also includes: The housing component includes a side panel and a partition beam. The partition beam is located within the space enclosed by the side panel to divide the space into multiple accommodating cavities for accommodating the battery pack. The partition beam is configured as the thermal management assembly.

27. The battery according to claim 26, wherein, The partition beam includes a longitudinal beam extending along the length of the box-type component; or, The partition beam includes a crossbeam extending along the width direction of the housing component; or The partition beam includes a longitudinal beam extending along the length of the box component and a transverse beam extending along the width of the box component.

28. The battery according to claim 26, wherein, The side panel forms a discharge path that communicates with the discharge cavity of the discharge component.

29. The battery according to claim 22, wherein, The battery also includes a housing component, the housing component including a top cover, and the thermal management component disposed on the top cover.

30. The battery according to claim 22, wherein, The battery also includes a housing component, which includes a base plate, and the thermal management component is disposed on the base plate.

31. The battery according to any one of claims 1-14, wherein, Also includes: A housing component that defines a receiving cavity for accommodating the battery pack; A fastener is provided inside the housing component. The fastener is located on the thickness side of the battery pack and engages with all the outermost battery packs. The fastener is fixedly connected to the housing component.

32. An electrical device, wherein, Includes a battery according to any one of claims 1-31, the battery being used to provide electrical energy to the electrical device.

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