Battery and electric device

Abstract

Provided in the embodiments of the present application are a battery and an electric device. The battery comprises a battery cell group, a plurality of thermal management components, a first connecting pipe, and a first protective mechanism, wherein the battery cell group comprises a plurality of battery cells. The plurality of thermal management components are arranged spaced apart from each other in a first direction, and each thermal management component has a first end and a second end in a second direction. At least one battery cell is arranged between two adjacent thermal management components, and the first direction is perpendicular to the second direction. The first connecting pipe is located on a side of the battery cell group in the second direction, and connects the first ends of two adjacent thermal management components. The first protective mechanism is configured to shield the first connecting pipe, so as to limit the contact between emissions from the battery cell and the first connecting pipe. The probability of the emissions melting the first connecting pipe is reduced, and the probability of fluid leakage from the first connecting pipe caused by the emissions discharged from the battery cell is also reduced, thereby improving the reliability of the battery when in use.

Description

Batteries and electrical equipment

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims priority to Chinese patent application No. 202420013029.2, filed on January 2, 2024, entitled “Batteries and Electrical Equipment,” the entire contents of which are incorporated herein by reference. Technical Field

[0003] The present application relates to the field of battery technology, and in particular to a battery and an electrical device. Background Art

[0004] Energy conservation and emission reduction are key to the sustainable development of the automotive industry. Electric vehicles, due to their energy-saving and environmentally friendly advantages, have become an important component of the sustainable development of the automotive industry. For electric vehicles, battery technology is a key factor in their development.

[0005] In the development of battery technology, in addition to improving battery performance, the reliability of batteries during use is also an issue that needs to be considered.

[0006] Therefore, how to improve battery reliability is an urgent problem to be solved in battery technology.

[0007] Summary of the Invention

[0008] In view of the above problems, the embodiments of the present application provide a battery and an electrical device, which can improve the reliability of the battery during use.

[0009] In a first aspect, an embodiment of the present application provides a battery comprising a battery cell group, a plurality of thermal management components, a first connecting tube and a first protective mechanism, wherein the battery cell group comprises a plurality of battery cells. The plurality of thermal management components are spaced apart along a first direction, and each thermal management component has a first end and a second end in a second direction. At least one battery cell is disposed between two adjacent thermal management components, and the first direction and the second direction are perpendicular. The first connecting tube is located on one side of the battery cell group in the second direction, and the first connecting tube connects the first ends of the two adjacent thermal management components. The first protective mechanism is configured to shield the first connecting tube to limit the discharge of the battery cells from contacting the first connecting tube.

[0010] In the technical solution of the embodiment of the present application, the first protective mechanism is configured to shield the first connecting tube so that when the battery cell discharges emissions due to thermal runaway, the first protective mechanism can limit the emissions from contacting the first connecting tube, thereby reducing the probability of the emissions melting the first connecting tube, and further reducing the probability of fluid leakage from the first connecting tube due to the discharge of emissions from the battery cell, thereby improving the reliability of the battery during use.

[0011] In some embodiments, the battery further comprises a housing, in which the battery cells and the thermal management components are housed. The housing comprises a bottom wall and a top wall arranged relative to each other along a third direction, and a pressure relief mechanism is provided at one end of the battery cell facing the top wall. Along the third direction, at least a portion of the first protective mechanism is located between the top wall and the first connecting tube, and the first direction, the second direction and the third direction are perpendicular to each other. The housing provides installation space for the battery cells and the thermal management components, thereby improving the integration of the battery. The pressure relief mechanism is provided at one end of the battery cell facing the top wall, so that when the pressure relief mechanism is braked, the emissions enter the housing along the third direction, so that the emissions are located between the top wall and the battery cells, thereby enabling the portion of the first protective mechanism located between the top wall and the first connecting tube along the third direction to limit the emissions from contacting the first connecting tube.

[0012] In some embodiments, the projection of the first protection mechanism and the projection of the pressure relief mechanism along the third direction do not overlap. This design prevents emissions from the pressure relief mechanism from directly contacting the first protection mechanism along the third direction. This further limits the emissions from passing through the gap between the first protection mechanism and the battery pack in the third direction and contacting the first connecting pipe.

[0013] In some embodiments, the housing has a first sidewall and a second sidewall disposed opposite each other along a second direction. Along the second direction, the first connecting tube is located between the first sidewall and the battery cell group. At least a portion of the first protective mechanism is located between the first sidewall and the battery cell group. This design allows the housing to vibrate under external force, causing the first protective mechanism to contact the housing earlier than the battery cell group when the battery cell group moves relative to the housing in the second direction, thereby providing a buffer for the battery cell group. This is beneficial for reducing the extent of damage to the battery caused by external force collisions.

[0014] In some embodiments, the first protective mechanism includes a first protective cover, and the battery cell pack has a first side surface facing the first connecting tube. The first protective cover and the first side surface together form a first accommodating cavity, and at least a portion of the first connecting tube is located within the first accommodating cavity. Disposing at least a portion of the first connecting tube within the first accommodating cavity formed by the first protective cover and the first side surface is advantageous for limiting contact between emissions and the first connecting tube.

[0015] In some embodiments, the first protective cover is connected to the battery pack and / or the housing. This allows the battery pack and / or the housing to provide support for the first protective cover. In particular, when the first protective cover is connected to both the battery pack and the housing, the stability of the first accommodating chamber near the housing and near the battery pack can be improved, which is beneficial for enhancing the stability of the first accommodating chamber.

[0016] In some embodiments, the first protective cover includes a first top plate and a first side plate, and one end of the first top plate is connected to the battery cell group. The other end of the first top plate is connected to the first side plate. The first top plate blocks the first connecting tube along the third direction, and the first side plate blocks the first connecting tube along the second direction. By setting the first top plate to block the first connecting tube along the third direction, it is possible to limit the discharge between the top wall and the first top plate from contacting the first connecting tube along the third direction. By setting the first side plate to block the first connecting tube along the second direction, it is possible to limit the discharge between the inner wall of the box and the first side plate from contacting the first connecting tube along the second direction.

[0017] In some embodiments, the end of the first side panel away from the first top panel abuts the bottom wall. By abutting the end of the first side panel away from the first top panel against the bottom wall, the bottom wall can provide support for the first side panel, which is beneficial for improving the stability of the first accommodating chamber. Furthermore, the abutment of the first side panel against the bottom wall can limit the entry of emissions into the first accommodating chamber through the gap between the first side panel and the bottom wall in the third direction, which is beneficial for reducing the occurrence of arcing between the box body and the battery cell pack.

[0018] In some embodiments, the first protective cover further includes a first bottom plate, one end of the first bottom plate being connected to the battery cell group, the other end of the first bottom plate being connected to the first side plate, and a first connecting pipe being located between the first top plate and the first bottom plate along the third direction. By positioning the first connecting pipe between the first top plate and the first bottom plate along the third direction, it is possible to limit contact of emissions with the first connecting pipe along the third direction.

[0019] In some embodiments, the first bottom plate abuts the bottom wall. This abutment allows the bottom wall to provide support for the first bottom plate and first side plate, which is beneficial for improving the stability of the first accommodating chamber. Furthermore, the abutment of the first bottom plate against the bottom wall limits the accumulation of emissions within the gap between the first bottom plate and the bottom wall in the third direction, which is beneficial for reducing arcing between the housing and the battery pack.

[0020] In some embodiments, the first accommodating chamber has first openings formed at both ends along the first direction, and the first protective mechanism further includes a first sealing plate that seals the first openings. This design can prevent emissions from passing through the first openings in the first protective cover, entering the first accommodating chamber along the first direction, and contacting the first connecting pipe.

[0021] In some embodiments, the first protective mechanism is made of a heat-resistant material. The heat-resistant material can reduce the probability of the emissions melting through the first protective mechanism, thereby improving the reliability of the first protective mechanism in shielding the first connecting pipe to a certain extent.

[0022] In some embodiments, the battery further includes a second connecting tube and a second protective mechanism. The second connecting tube is located on a side of the battery cell group facing away from the first connecting tube in the second direction. The second connecting tube connects the second ends of two adjacent thermal management components. The second protective mechanism is configured to shield the second connecting tube to limit contact between the discharge of the battery cells and the second connecting tube. This design reduces the probability of the discharge melting the second connecting tube, thereby reducing the probability of fluid leakage from the second connecting tube due to the discharge of the battery cells, thereby improving the reliability of the battery during use.

[0023] In some embodiments, the second protective mechanism includes a second protective cover, and the battery pack has a second side surface facing the second connecting tube. The second protective cover and the second side surface together form a second accommodating cavity, and at least a portion of the second connecting tube is located within the second accommodating cavity. Disposing at least a portion of the second connecting tube within the second accommodating cavity formed by the second protective cover and the second side surface is advantageous in limiting contact between emissions and the second connecting tube.

[0024] In a second aspect, an embodiment of the present application provides an electrical device, which includes the battery in the above embodiment, and the battery is used to provide electrical energy.

[0025] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following is a brief introduction to the drawings required for use in the embodiments of the present application. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the drawings without creative work.

[0027] FIG1 is a schematic structural diagram of a vehicle provided in some embodiments of the present application;

[0028] FIG2 is a schematic diagram of the exploded structure of a first battery according to some embodiments of the present application;

[0029] FIG3 is a schematic structural diagram of a first battery in some embodiments of the present application;

[0030] FIG4 is a schematic diagram of the exploded structure of a second battery according to some embodiments of the present application;

[0031] FIG5 is a schematic diagram of a cross-sectional structure of a second battery along a first direction X according to some embodiments of the present application;

[0032] FIG6 is a schematic cross-sectional view of a third type of battery along a first direction X according to some embodiments of the present application;

[0033] FIG7 is a schematic diagram of a cross-sectional structure of a fourth battery along a first direction X according to some embodiments of the present application;

[0034] FIG8 is a schematic cross-sectional view of a fifth battery along a first direction X according to some embodiments of the present application;

[0035] FIG9 is a schematic cross-sectional view of a sixth type of battery along a first direction X according to some embodiments of the present application;

[0036] FIG10 is a schematic structural diagram of a first protective cover according to some embodiments of the present application;

[0037] FIG11 is a schematic diagram of the exploded structure of a second battery excluding the first part according to some embodiments of the present application;

[0038] FIG12 is a schematic structural diagram of another first protective cover according to some embodiments of the present application;

[0039] FIG13 is a schematic diagram of the exploded structure of a fourth battery excluding the first part according to some embodiments of the present application;

[0040] In the drawings, the drawings are not drawn to scale.

[0041] Marking instructions: 1000-vehicle; 100-battery; 200-controller; 300-motor; 10-housing; 11-first part; 111-top wall; 12-second part; 121-bottom wall; 122-first side wall; 123-second side wall; 20-battery cell group; 21-battery cell; 211-pressure relief mechanism; 212-first side; 213-second side; 30-thermal management component; 31-first end; 32-second end; 40-first connecting pipe; 41-second connecting pipe; 50-first protective mechanism; 501-first accommodating chamber; 502-second accommodating chamber; 51-first protective cover; 511-first top plate; 512-first side plate; 513-first bottom plate; 52-first sealing plate; 53-second protective mechanism; 531-second protective cover. DETAILED DESCRIPTION

[0042] The following detailed description of the embodiments of the present application is provided in conjunction with the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are used to illustrate the principles of the present application, but are not intended to limit the scope of the present application, that is, the present application is not limited to the described embodiments.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application belongs; the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned figure descriptions are intended to cover non-exclusive inclusions.

[0044] In the description of the embodiments of the present application, technical terms such as "first" and "second" are only used to distinguish different objects and cannot be understood as indicating or implying relative importance or implicitly indicating the number, specific order or primary and secondary relationship of the indicated technical features.

[0045] References herein to "embodiments" mean that a particular feature, structure, or characteristic described in connection with the embodiments may be included in at least one embodiment of the present application. The appearance of this phrase in various places in the specification does not necessarily refer to the same embodiment, nor does it constitute an independent or alternative embodiment that is mutually exclusive of other embodiments. It is understood, both explicitly and implicitly, by those skilled in the art that the embodiments described herein may be combined with other embodiments.

[0046] In the description of the embodiments of the present application, the term "multiple" refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces), unless otherwise clearly and specifically defined.

[0047] In the description of the embodiments of the present application, the technical terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the present application.

[0048] In the description of the embodiments of the present application, unless otherwise expressly specified or limited, technical terms such as "installed," "connected," "connected," and "fixed" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integration; mechanical connections or electrical connections; direct connections or indirect connections through an intermediate medium; internal connections between two components or interactions between two components. Those skilled in the art can understand the specific meanings of the above terms in the embodiments of the present application based on specific circumstances.

[0049] The term "multiple" in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple pieces" refers to more than two pieces (including two pieces).

[0050] In the embodiments of the present application, battery cells may include lithium-ion secondary batteries, lithium-ion primary batteries, lithium-sulfur batteries, sodium-lithium-ion batteries, sodium-ion batteries, or magnesium-ion batteries, etc., and the embodiments of the present application do not limit this. Battery cells may be cylindrical, flat, rectangular, or other shapes, etc., and the embodiments of the present application do not limit this. Battery cells are generally divided into three types based on the packaging method: cylindrical battery cells, prismatic battery cells, and soft-pack battery cells, and the embodiments of the present application do not limit this.

[0051] The battery referred to in the embodiments of this application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. A battery generally includes a housing that encloses one or more battery cells. The housing prevents liquids or other foreign matter from affecting the charging or discharging of the battery cells.

[0052] A battery cell consists of an electrode assembly and an electrolyte. The electrode assembly is composed of a positive electrode sheet, a negative electrode sheet, and a separator. A battery cell primarily operates by the movement of metal ions between the positive and negative electrode sheets.

[0053] The development of battery technology must take into account multiple design factors at the same time, such as energy density, cycle life, discharge capacity, charge and discharge rate and other performance parameters. In addition, the reliability of the battery during use must also be considered.

[0054] The emissions from the battery cells mentioned in the embodiments of the present application include, but are not limited to: electrolyte, dissolved or split positive and negative electrode plates, fragments of the separator, high-temperature and high-pressure gas generated by the reaction, flames, etc.

[0055] When a short circuit or overcharge occurs, thermal runaway may occur inside the battery cell, causing a sudden increase in pressure or temperature. In this case, the battery cell can release the internal pressure and temperature to prevent the battery cell from exploding or catching fire.

[0056] In order to improve the reliability and stability of the battery in the battery assembly solution, a thermal management component is usually installed in the box. The thermal management component is used to contain fluid to regulate the temperature of multiple battery cells. In some cases, in order to increase the contact area between the thermal management component and the battery cell, the thermal management component is set on the large side of the battery cell. At the same time, in order to enable the fluid in multiple thermal management components to circulate between multiple thermal management components. In some cases, a first connecting tube is set on the non-large side of the battery to connect multiple thermal management components. Therefore, when a battery cell experiences thermal runaway, the emissions from the battery cell may fall on the first connecting tube through the rebound of the inner wall of the box and melt through the first connecting tube, causing safety problems.

[0057] In view of this, embodiments of the present application provide a battery comprising a battery cell group, multiple thermal management components, a first connecting tube, and a first protective mechanism. The battery cell group comprises multiple battery cells. The multiple thermal management components are spaced apart. At least one battery cell is disposed between two adjacent thermal management components. The first connecting tube is configured to connect the two adjacent thermal management components.

[0058] The first protection mechanism is configured to shield the first connecting tube to limit contact between exhaust from the battery cells and the first connecting tube. If exhaust from a battery cell occurs due to thermal runaway, the first protection mechanism can prevent the exhaust from contacting the first connecting tube, thereby reducing the probability of the exhaust melting the first connecting tube. This in turn reduces the probability of fluid leakage from the first connecting tube due to exhaust from the battery cell, thereby improving the reliability of the battery during use.

[0059] The embodiments of the present application provide an electric device that uses a battery as a power source. The electric device may be, but is not limited to, a mobile phone, a tablet, a laptop computer, an electric toy, an electric tool, a battery-powered vehicle, an electric car, a ship, a spacecraft, etc. The electric toy may include a fixed or mobile electric toy, such as a game console, an electric car toy, an electric ship toy, and an electric airplane toy, etc. The spacecraft may include an airplane, a rocket, a space shuttle, and a spacecraft, etc.

[0060] For the convenience of description, the following embodiments are described by taking a vehicle 1000 as an example of an electrical device according to an embodiment of the present application.

[0061] Please refer to Figure 1, which is a schematic structural diagram of a vehicle 1000 provided in some embodiments of the present application. The vehicle 1000 can be a fuel vehicle, a gas vehicle or a new energy vehicle. The new energy vehicle can be a pure electric vehicle, a hybrid vehicle or an extended-range vehicle, etc. A battery 100 is provided inside the vehicle 1000, and the battery 100 can be provided at the bottom, head or tail of the vehicle 1000. The battery 100 can be used to power the vehicle 1000. For example, the battery 100 can serve as an operating power source for the vehicle 1000. The vehicle 1000 may also include a controller 200 and a motor 300. The controller 200 is used to control the battery 100 to power the motor 300, for example, for starting, navigating and driving the vehicle 1000.

[0062] In some embodiments of the present application, the battery 100 can serve not only as an operating power source for the vehicle 1000, but also as a driving power source for the vehicle 1000, replacing or partially replacing fuel or natural gas to provide driving power for the vehicle 1000.

[0063] According to some embodiments of the present application, referring to FIG. 2 and further to FIG. 3 , FIG. 2 is an exploded schematic diagram of a first battery 100 according to some embodiments of the present application, and FIG. 3 is a schematic diagram of the structure of the first battery 100 according to some embodiments of the present application. Some embodiments of the present application provide a battery 100 comprising a battery cell group 20, a plurality of thermal management components 30, a first connecting pipe 40, and a first protective mechanism 50. The battery cell group 20 includes a plurality of battery cells 21. The plurality of thermal management components 30 are spaced apart along a first direction X, each having a first end 31 and a second end 32 in a second direction Y. At least one battery cell 21 is disposed between two adjacent thermal management components 30, with the first direction X and the second direction Y being perpendicular. The first connecting pipe 40 is located on one side of the battery cell group 21 in the second direction Y, connecting the first ends 31 of two adjacent thermal management components 30. The first protective mechanism 50 is configured to shield the first connecting pipe 40 to prevent emissions from the battery cells 21 from contacting the first connecting pipe 40.

[0064] In the figure, the first direction X is the length direction of the battery 100 , the second direction Y is the width direction of the battery 100 , and the third direction Z is the height direction of the battery 100 .

[0065] In order to meet different power usage requirements, the battery 100 of some embodiments of the present application may include a battery cell group 20, wherein the battery cell group 20 may include a plurality of battery cells 21, and the plurality of battery cells 21 may be connected in series, in parallel, or in hybrid connection, where hybrid connection refers to a mixture of series and parallel connection. The battery 100 may also include a plurality of battery cell groups 20. For example, a plurality of battery cells 21 may first be connected in series, in parallel, or in hybrid connection to form a battery cell group 20, and a plurality of battery cell groups 20 may then be connected in series, in parallel, or in hybrid connection to form a battery 100. In other words, a plurality of battery cells 21 may directly form a battery 100, or may first form a battery cell group 20, and the battery cell group 20 may then form a battery 100.

[0066] It can be understood that the gap between two adjacent battery cells 21 along the first direction X is filled with glue to limit emissions from passing through the gap between the two adjacent battery cells 21 in the first direction X and abutting against the first connecting pipe 40 .

[0067] The thermal management component 30 is used to regulate the temperature of the battery cells 21. It can contain a fluid or a solid-liquid phase change material to regulate the temperature of the battery cells 21. Specifically, the fluid can be a liquid or a gas. The solid-liquid phase change material is initially solid and becomes liquid after absorbing heat.

[0068] Adjusting the temperature refers to heating or cooling the multiple battery cells 21. In the case of cooling or lowering the temperature of the battery cells 21, the thermal management component 30 is used to accommodate a cooling fluid or a solid-liquid phase change material to lower the temperature of the multiple battery cells 21. At this time, the thermal management component 30 can also be called a cooling component, a cooling system or a cooling plate, etc., and the fluid it accommodates can also be called a cooling medium or a cooling fluid, more specifically, a coolant or a cooling gas. In addition, the thermal management component 30 can also be used for heating to increase the temperature of the multiple battery cells 21, and the embodiments of the present application are not limited to this. Optionally, the fluid can be circulating to achieve a better temperature regulation effect. Optionally, the fluid can be water, a mixture of water and ethylene glycol, or air, etc.

[0069] It is understandable that the thermal management component 30 may be fixedly connected to the battery cell 21 by an adhesive; or, the thermal management component 30 may be clamped and fixed by two adjacent battery cells 21 , which is not limited in the embodiments of the present application.

[0070] The first connecting tube 40 is used to connect the first ends 31 of two adjacent heat management components 30. Fluid or solid-liquid phase change material can flow between the two adjacent heat management components 30 through the first connecting tube 40.

[0071] It is understandable that the first connecting tube 40 can be made of plastic, and the first connecting tube 40 can be connected to the first end 31 by an adhesive; or, the first connecting tube 40 can also be connected to the first end 31 by being integrally formed with the first end 31, and the embodiments of the present application are not limited thereto.

[0072] The first guard mechanism 50 being configured to shield the first connecting pipe 40 means that at least a portion of the first guard mechanism 50 is located between the location where the battery cells 21 discharge exhaust and the first connecting pipe 40 .

[0073] Therefore, when the battery cell 21 discharges emissions due to thermal runaway, the first protective mechanism 50 can limit the emissions from contacting the first connecting tube 40, thereby reducing the probability of the emissions melting the first connecting tube 40, and further reducing the probability of fluid leakage from the first connecting tube 40 due to the discharge of emissions from the battery cell 21, thereby improving the reliability of the battery 100 during use.

[0074] According to some embodiments of the present application, optionally, with reference to FIG. 4 and further with reference to FIG. 5 , FIG. 4 is a schematic diagram of the exploded structure of the second type of battery 100 according to some embodiments of the present application, and FIG. 5 is a schematic diagram of the cross-sectional structure of the second type of battery 100 according to some embodiments of the present application along the first direction X. The battery 100 may further include a housing 10, in which the battery cells 21 and the thermal management component 30 are housed. The housing 10 includes a bottom wall 121 and a top wall 111 arranged opposite to each other along a third direction Z, and a pressure relief mechanism 211 is provided at one end of the battery cell 21 facing the top wall 111. Along the third direction Z, at least a portion of the first protective mechanism 50 is located between the top wall 111 and the first connecting tube 40.

[0075] The box body 10 is a shell for providing a stable and sealed working environment for the battery cells 21 .

[0076] As can be understood, referring to Figure 4, the housing 10 may include two parts, referred to herein as a first part 11 and a second part 12, which are buckled together along a third direction Z. The shapes of the first part 11 and the second part 12 may be determined according to the shapes of the plurality of battery cell groups 20, and the first part 11 and the second part 12 may each have an opening. For example, the first part 11 and the second part 12 may both be hollow rectangular parallelepipeds and each may have only one open face, the opening of the first part 11 and the opening of the second part 12 are arranged opposite to each other, and the first part 11 and the second part 12 are buckled together to form a housing 10 having a closed chamber. The battery cell 21 and the thermal management component 30 are combined and placed in the housing 10 formed by the buckling of the first part 11 and the second part 12.

[0077] Optionally, the first part 11 and the second part 12 can be made of a material with a certain hardness and strength (such as aluminum alloy). In this way, the box body 10 is not easily deformed when squeezed or collided, so that the battery cell 21 can have a higher structural strength, which is beneficial to reducing the degree of damage to the battery 100 caused by external force collision.

[0078] The top wall 111 and the bottom wall 121 are two inner walls of the box body 10 that are distributed along the third direction Z and are perpendicular to the third direction Z. The bottom wall 121 is used to accommodate the battery cells 21 and the thermal management component 30. In addition, other components may be disposed on the bottom wall 121, for example, a structure for securing the battery cells 21 and / or the thermal management component 30 may be disposed on the bottom wall 121.

[0079] It can be understood that the bottom wall 121 can be located on the second portion 12 . When the bottom wall 121 is located on the second portion 12 , the top wall 111 can be located on the first portion 11 .

[0080] For battery cells 21, the primary safety risks arise from the charging and discharging processes, as well as the need for a suitable ambient temperature. To effectively prevent unnecessary damage, battery cells 21 typically employ at least three layers of protection. Specifically, these protections include at least a switch element, appropriate isolation membrane material, and a pressure relief mechanism 211.

[0081] The pressure relief mechanism 211 refers to an element or component that is actuated to release the internal pressure or temperature when the internal pressure or temperature or other conditions of the battery cell 21 reach a predetermined threshold. The threshold design varies according to different design requirements. The threshold may depend on one or more materials of the positive electrode plate, negative electrode plate, electrolyte and isolation membrane in the battery cell 21. The pressure relief mechanism 211 can take the form of an explosion-proof valve, an air valve, a pressure relief valve or a safety valve, and can specifically adopt a pressure-sensitive or temperature-sensitive element or structure, that is, when the internal pressure or temperature or other conditions of the battery cell 21 reach a predetermined threshold, the pressure relief mechanism 211 performs an action or the weak structure provided in the pressure relief mechanism 211 is destroyed, thereby forming an opening or channel for the internal pressure or temperature to be released.

[0082] The "actuation" mentioned in the embodiments of the present application refers to the action of the pressure relief mechanism 211 or its activation to a certain state, so that the internal pressure and temperature of the battery cell 21 can be released, so that the internal pressure and temperature of the battery cell 21 can be released. The action produced by the pressure relief mechanism 211 may include but is not limited to: at least a part of the pressure relief mechanism 211 is broken, shattered, melted, torn or opened, etc. When the pressure relief mechanism 211 is actuated, the high-temperature and high-pressure substances inside the battery cell 21 will be discharged outward from the actuated part as emissions. In this way, the battery cell 21 can be depressurized and cooled under controllable pressure or temperature, thereby avoiding potential more serious accidents.

[0083] It can be understood that the pressure relief mechanism 211 is arranged at one end of the battery cell 21 facing the top wall 111, so that when the pressure relief mechanism 211 is braked, the emissions enter the box body 10 along the third direction Z, so that the emissions are located between the top wall 111 and the battery cell 21, and further along the third direction Z, the part of the first protective mechanism 50 located between the top wall 111 and the first connecting pipe 40 can limit the emissions from contacting the first connecting pipe 40.

[0084] By arranging at least a portion of the first protection mechanism 50 between the top wall 111 and the first connecting pipe 40 in the third direction Z, the discharge discharged from the pressure relief mechanism 211 is restricted from contacting the first connecting pipe 40, which is beneficial to improving the reliability of the battery 100 during use.

[0085] According to some embodiments of the present application, optionally, please continue to refer to FIG. 5 , along the third direction Z, the projection of the first protection mechanism 50 does not overlap with the projection of the pressure relief mechanism 211 .

[0086] Along the third direction Z, the projection of the first protection mechanism 50 refers to the projection of the first protection mechanism 50 on any plane perpendicular to the third direction Z.

[0087] Along the third direction Z, the projection of the pressure relief mechanism 211 refers to the projection of the pressure relief mechanism 211 on any plane perpendicular to the third direction Z.

[0088] It can be understood that when the projection of the first protective mechanism 50 does not overlap with the projection of the pressure relief mechanism 211 along the third direction Z, the emissions discharged from the pressure relief mechanism 211 will not contact the first protective mechanism 50 when moving in the direction of the box close to the top wall 111 along the third direction Z, thereby reducing the probability of the emissions passing through the gap between the first protective mechanism 50 and the battery cell 21 in the third direction Z and contacting the first connecting pipe 40.

[0089] According to some embodiments of the present application, optionally, referring to FIG. 5 , the housing 10 includes a first side wall 122 and a second side wall 123 disposed opposite each other along a second direction Y. Along the second direction Y, the first connecting tube 40 is located between the first side wall 122 and the battery cell group 20. At least a portion of the first protective mechanism 50 is located between the first side wall 122 and the battery cell group 20.

[0090] The first side wall 122 and the second side wall 123 are two inner walls of the box body 10 distributed along the second direction Y and perpendicular to the second direction Y. The first side wall 122 faces the first connecting pipe 40 .

[0091] It is understandable that because at least a portion of the first protection mechanism 50 is located between the first side wall 122 and the battery cell group 20, when the housing 10 is subjected to an external force and vibrates, causing the battery cell group 20 to move relative to the housing 10 in the second direction Y, the first protection mechanism 50 will abut the housing 10 earlier than the battery cell group 20, thereby providing a buffer for the battery cell group 20. This is beneficial for reducing the extent of damage to the battery 100 caused by the collision.

[0092] According to some embodiments of the present application, please optionally continue to refer to FIG. 5 and further refer to FIG. 6 to FIG. 9 . FIG. 6 to FIG. 9 respectively illustrate schematic cross-sectional structures of several possible battery cells 100 along a first direction X according to embodiments of the present application. The first protective mechanism 50 includes a first protective cover 51 , and the battery cell group 20 has a first side surface 212 facing the first connecting tube 40 . The first protective cover 51 and the first side surface 212 together form a first accommodating cavity 501 , and at least a portion of the first connecting tube 40 is located within the first accommodating cavity 501 .

[0093] The first protective cover 51 is a component that forms the first accommodating cavity 501 together with the first side surface 212 .

[0094] The first side surface 212 refers to a surface of the battery cell 21 facing the first connecting tube 40 and perpendicular to the second direction Y.

[0095] The first accommodating chamber 501 is used to accommodate at least a portion of the first connecting pipe 40. Referring to Figure 5 , the first accommodating chamber 501 may be non-sealed. Alternatively, referring to Figures 6 to 9 , the first accommodating chamber 501 may also be sealed.

[0096] Alternatively, referring to Figures 8 and 9 , the first accommodating cavity 501 may be formed jointly by the first protective cover 51 and the first side surface (not shown). Referring to Figures 5 and 6 , the first accommodating cavity 501 may also be formed jointly by the first protective cover 51, the first side surface 212, and the bottom wall 121. Referring to Figure 7 , the first accommodating cavity 501 may also be formed jointly by the first protective cover 51, the first side surface 212, the first side wall 122, and the bottom wall 121. This embodiment is not limited thereto.

[0097] It can be understood that by arranging at least a portion of the first connecting pipe 40 in the first accommodating chamber 501, when the pressure relief mechanism 211 discharges emissions, the emissions rebounding through the top wall 111 will first contact the inner wall of the box body 10 and / or the outer side of the first protective cover 51, thereby limiting the emissions from contacting the first connecting pipe 40.

[0098] According to some embodiments of the present application, optionally, please continue to refer to FIG. 5 , and further refer to FIG. 6 to FIG. 9 , the first protective cover 51 is connected to the battery cell group 20 and / or the box body 10 .

[0099] It is understandable that the first protective cover 51 can be fixedly connected to the battery cell group 20 and / or the box body 10 by an adhesive; or, the first protective cover 51 can be clamped and fixed by the first side surface 212 and the first side wall 122, which is not limited in the embodiments of the present application.

[0100] 5 to 8 , the first protective cover 51 may be connected to the surface of the battery cell group 20 facing the top wall 111. Referring to FIG. 9 , the first protective cover 51 may be connected to the first side surface 212 of the battery cell group 20.

[0101] Optionally, the gap between the first protective cover 51 and the battery cell group 20 may be filled with glue to prevent emissions from passing through the gap between the first protective cover 51 and the battery cell group 20 and contacting the first connecting pipe 40 .

[0102] It is understood that the portion where the first protective cover 51 is connected to the battery cell group 20 and / or the housing 10 can provide support for the first protective cover 51 around the connection portion, thereby providing support for the first accommodating chamber 501. When the first protective cover 51 is connected to both the battery cell group 20 and the housing 10, the stability of the first accommodating chamber 501 near the housing 10 and the battery cell group 20 can be improved, which is beneficial to improving the stability of the first accommodating chamber 501.

[0103] In addition, when the first protective cover 51 is connected to only one of the battery cell group 20 and the case 10, the first protective cover 51 may not be adapted to the size of the gap between the battery cell group 20 and the case 10, so that the first protective cover 51 can be applied to different combinations of battery cell groups 20 and the case 10, which is beneficial to improving the scope of use of the first protective cover 51.

[0104] According to some embodiments of the present application, optionally, please continue to refer to Figure 5, and further refer to Figures 6, 10, and 11. Figure 10 is a structural schematic diagram of a first protective cover 51 in some embodiments of the present application, and Figure 11 is a schematic diagram of the exploded structure of the second battery 100 in some embodiments of the present application that does not include the first part 11. The first protective cover 51 includes a first top plate 511 and a first side plate 512. One end of the first top plate 511 is connected to the battery cell group 20. The other end of the first top plate 511 is connected to the first side plate 512. The first top plate 511 shields the first connecting tube 40 along the third direction Z, and the first side plate 512 shields the first connecting tube 40 along the second direction Y.

[0105] The first top plate 511 is the part that connects the first protective cover 51 and the battery cell group 20. The first top plate 511 is used to block between the first connecting pipe 40 and the top wall 111 along the third direction Z to limit the discharge between the top wall 111 and the first top plate 511 from contacting the first connecting pipe 40 along the third direction Z.

[0106] The connection method between the first top plate 511 and the battery cell group 20 is the same as the connection method between the first protective cover 51 and the battery cell group 20 , and therefore will not be repeated here.

[0107] The first side plate 512 is the portion of the first protective cover 51 extending along the third direction Z. The first side plate 512 is used to block between the first connecting pipe 40 and the first side wall 122 along the second direction Y to limit the discharge between the first side wall 122 and the first side plate 512 from contacting the first connecting pipe 40 along the second direction Y.

[0108] It is understandable that the first side panel 512 and the first top panel 511 may be connected and fixed by an adhesive; or the first side panel 512 and the first top panel 511 may be integrally formed, which is not limited in this embodiment.

[0109] By providing the first top plate 511 and the first side plate 512 , the emissions discharged from the pressure relief mechanism 211 will not come into contact with the first connecting pipe 40 after rebounding once through the top wall 111 and / or the bottom wall 121 , thereby limiting the contact of the emissions with higher temperatures with the first connecting pipe 40 .

[0110] According to some embodiments of the present application, optionally, referring to FIG. 6 , one end of the first side plate 512 away from the first top plate 511 abuts against the bottom wall 121 .

[0111] It is understandable that the end of the first side plate 512 away from the first top plate 511 can abut against the bottom wall 121; or, it can also be fixedly connected to the bottom wall 121 by an adhesive, which is not limited in this embodiment.

[0112] It can be understood that by abutting one end of the first side plate 512 away from the first top plate 511 against the bottom wall 121 , the bottom wall 121 can provide support for the first side plate 512 , which is beneficial to improving the stability of the first accommodating cavity 501 .

[0113] At the same time, the first side plate 512 abuts against the bottom wall 121, restricting emissions from entering the first accommodating chamber 501 through the gap between the first side plate 512 and the bottom wall 121 in the third direction Z. This in turn limits the accumulation of emissions between the first side plate 512 and the bottom wall 121. This reduces arcing between the first side wall 122 and the battery pack 20 caused by emissions, which is beneficial for reducing fires caused by arcing.

[0114] According to some embodiments of the present application, optionally, please continue to refer to FIG. 8 , and further refer to FIG. 9 , FIG. 12 , and FIG. 13 . FIG. 12 is a schematic diagram of the structure of another first protective cover 51 according to some embodiments of the present application, and FIG. 13 is a schematic diagram of the exploded structure of a fourth type of battery 100 according to some embodiments of the present application, excluding the first portion 11 . The first protective cover 51 further includes a first bottom plate 513 , one end of which is connected to the battery cell group 20 , and the other end of which is connected to the first side plate 512 . Along the third direction Z, the first connecting tube 40 is located between the first top plate 511 and the first bottom plate 513 .

[0115] The first bottom plate 513 is the portion of the first protective cover 51 located between the bottom wall 121 and the first connecting pipe 40. The first bottom plate 513 is used to block between the first connecting pipe 40 and the bottom wall 121 along the second direction Y to limit the discharge from contacting the first connecting pipe 40 after rebounding from the bottom wall 121.

[0116] It is understandable that the first side panel 512 and the first bottom panel 513 can be connected and fixed by an adhesive; or, the first side panel 512 and the first top panel 511 and the first bottom panel 513 can also be fixed to each other by integral molding, which is not limited in this embodiment.

[0117] It can be understood that the end of the first bottom plate 513 away from the first side plate 512 can be in contact with the first side surface 212; or, the end of the first bottom plate 513 away from the first side plate 512 can also be fixedly connected to the first side surface 212 by an adhesive, which is not limited in this embodiment.

[0118] It can be understood that the first bottom plate 513 abuts against the first side surface 212 , so that the battery cell group 20 can provide support for the first protective cover 51 , which is beneficial to improving the stability of the first accommodating cavity 501 .

[0119] At the same time, the abutment between the first bottom plate 513 and the first side surface 212 can limit the emissions from entering the first accommodating cavity 501 through the gap between the first bottom plate 513 and the first side surface 212 , which is beneficial for limiting the accumulation of emissions in the first accommodating cavity 501 .

[0120] By arranging the first connecting pipe 40 to be located between the first top plate 511 and the first bottom plate 513 along the third direction Z, the discharge material may be restricted from contacting the first connecting pipe 40 along the third direction Z.

[0121] According to some embodiments of the present application, optionally, referring to FIG. 8 , the first bottom plate 513 abuts against the bottom wall 121 .

[0122] It can be understood that the first bottom plate 513 and the bottom wall 121 can be in contact with each other; or, the first bottom plate 513 and the bottom wall 121 can be connected and fixed by an adhesive, which is not limited in this embodiment.

[0123] By abutting the first bottom plate 513 against the bottom wall 121 , the bottom wall 121 can provide support for the first bottom plate 513 and the first side plate 512 , which is beneficial to improving the stability of the first accommodating cavity 501 .

[0124] At the same time, the first bottom plate 513 abuts against the bottom wall 121, which can limit the accumulation of emissions in the gap between the first bottom plate 513 and the bottom wall 121, thereby reducing the arcing phenomenon caused by the emissions between the first side wall 122 and the battery cell group 20, which is beneficial to reducing fires caused by the arcing phenomenon.

[0125] According to some embodiments of the present application, optionally, please continue to refer to Figure 8 and Figure 13, the first accommodating cavity 501 is formed with a first opening (not shown in the figure) at both ends along the first direction X, and the first protective mechanism 50 also includes a first sealing plate 52, and the first sealing plate 52 closes the first opening (not shown in the figure).

[0126] The first sealing plate 52 is a component that is fastened together with the first protective cover 51 along the first direction X to close the first opening (not shown in the figure) and forms the first accommodating cavity 501 together with the first protective cover 51 and the first side surface 212 .

[0127] The shape of the first sealing plate 52 can be determined based on the shape of the first opening (not shown), and the first sealing plate 52 can also have an opening. For example, the first sealing plate 52 is a hollow structure, and one surface of the first sealing plate 52 has an opening, which is arranged opposite to the first opening (not shown). The first sealing plate 52 and the first protective cover 51 are interlocked and, together with the first side surface 212, form the first accommodating cavity 501.

[0128] It is understandable that the first sealing plate 52 can be fixedly connected to the first protective cover 51 by using an adhesive; or the first sealing plate 52 can also be integrally formed with the first protective cover 51, which is not limited in this embodiment.

[0129] The first sealing plate 52 is provided to prevent the emissions from entering the first accommodating chamber 501 along the first direction X through the first opening (not shown) on the first protective cover 51 and contacting the first connecting pipe 40 .

[0130] According to some embodiments of the present application, optionally, the first protection mechanism 50 is made of a heat-resistant material.

[0131] Heat-resistant materials refer to materials that can withstand temperatures above 600°C without structural damage.

[0132] It is understood that the heat-resistant material can be either flexible or rigid. When the heat-resistant material is rigid, the first protection mechanism 50 has a certain strength. This allows it to cushion the battery pack 20 when vibration causes the first protection mechanism 50 to contact the housing 10 earlier than the battery pack 20. This helps reduce the damage to the battery 100 caused by the collision. More specifically, the rigid material can be a rigid foam that withstands temperatures above 600°C without structural damage.

[0133] Furthermore, when the heat-resistant material is flexible, the first protective mechanism 50 can deform within a certain range. This allows for proper bending of the first protective mechanism 50 during installation of the battery pack 20, further facilitating installation. More specifically, the flexible material can be mica paper or ceramic composite tape, which withstands temperatures exceeding 600°C without structural damage.

[0134] It can be understood that the first protection mechanism 50 being made of heat-resistant material may mean that at least a portion of at least one component constituting the first protection mechanism 50 is made of heat-resistant material.

[0135] The heat-resistant material can reduce the probability of the emissions melting through the first protection mechanism 50 , thereby improving the reliability of the first protection mechanism 50 shielding the first connecting pipe 40 to a certain extent.

[0136] According to some embodiments of the present application, with continued reference to FIG8 and FIG13 , the battery 100 optionally further includes a second connecting tube 41 and a second protective mechanism 53. The second connecting tube 41 is located on a side of the battery cell group 20 facing away from the first connecting tube 40 in the second direction Y. The second connecting tube 41 connects the second ends 32 of two adjacent thermal management components 30. The second protective mechanism 53 is configured to shield the second connecting tube 41 to prevent emissions from the battery cells 21 from contacting the second connecting tube 41.

[0137] The second connecting tube 41 is used to connect the second ends 32 of two adjacent heat management components 30. Fluid or solid-liquid phase change material can flow between the two adjacent heat management components 30 through the first connecting tube 40.

[0138] It is understandable that the second connecting tube 41 can be made of plastic, and the second connecting tube 41 can be connected to the second end 32 by an adhesive; or, the second connecting tube 41 can also be connected to the second end 32 by being integrally formed with the second end 32, which is not limited in the embodiments of the present application.

[0139] The second guard mechanism 53 being configured to shield the second connecting pipe 41 means that at least a portion of the second guard mechanism 53 is located between the location where the battery cells 21 discharge exhaust and the second connecting pipe 41 .

[0140] Therefore, when the battery cell 21 discharges emissions due to thermal runaway, the second protective mechanism 53 can limit the emissions from contacting the second connecting tube 41, thereby reducing the probability of the emissions melting the second connecting tube 41, and further reducing the probability of fluid leakage from the second connecting tube 41 due to the discharge of emissions from the battery cell 21, thereby improving the reliability of the battery 100 during use.

[0141] According to some embodiments of the present application, optionally, with continued reference to FIG. 8 and FIG. 13 , the second protective mechanism 53 includes a second protective cover 531 , and the battery cell pack 20 has a second side surface 213 facing the second connecting tube 41 . The second protective cover 531 and the second side surface 213 together form a second accommodating cavity 502 , and at least a portion of the second connecting tube 41 is located within the second accommodating cavity 502 .

[0142] The second protective cover 531 is a component that forms the second accommodating cavity 502 together with the second side surface 213 .

[0143] The second side surface 213 refers to a surface of the battery cell 21 facing the second connecting tube 41 and perpendicular to the second direction Y.

[0144] The second accommodating chamber 502 is used to accommodate at least a portion of the second connecting pipe 41 , wherein the first accommodating chamber 501 may be non-sealed.

[0145] It can be understood that by arranging at least a portion of the second connecting pipe 41 in the second accommodating chamber 502, when the pressure relief mechanism 211 discharges emissions, the emissions rebounding through the top wall 111 will first contact the inner wall of the box body 10 and / or the outer side of the second protective cover 531, thereby limiting the emissions from contacting the second connecting pipe 41.

[0146] According to some embodiments of the present application, with reference to FIG5 and FIG11 , the present application provides a battery 100, wherein a battery cell group 20 includes a plurality of battery cells 21. A plurality of thermal management components 30 are arranged at intervals along a first direction X, each thermal management component 30 having a first end 31 and a second end 32 in a second direction Y, and a battery cell 21 is arranged between two adjacent thermal management components 30. The battery cell group 20 and the thermal management components 30 are accommodated in the housing 10. The first connecting tube 40 is located between the first side wall 122 and the first side surface 212, and the first connecting tube 40 connects the first ends 31 of the two adjacent thermal management components 30. The second connecting tube 41 is located on a side of the battery cell group 20 facing away from the first connecting tube 40 in the second direction Y, and the second connecting tube 41 connects the second ends 32 of the two adjacent thermal management components 30. The first protective mechanism 50 includes a first protective cover 51 and a first sealing plate 52. The first protective cover 51 includes a first top plate 511 and a first side plate 512. One end of the first top plate 511 is connected to the side of the battery cell group 20 facing the top wall 111, and the other end of the first top plate 511 is connected to the first side plate 512. The first top plate 511 shields the first connecting tube 40 along the third direction Z, and the first side plate 512 shields the first connecting tube 40 along the second direction Y. Along the first direction X, the edge of the first top plate 511, the edge of the first side plate 512, the bottom wall 121, and the first side surface 212 form a first opening (not shown). The first sealing plate 52 is buckled onto the first opening (not shown) and seals the first opening (not shown). The second protective mechanism 53 is sleeved around the second connecting tube 41 and is symmetrically arranged with the first protective mechanism 50. This prevents the exhaust discharged from the pressure relief mechanism 211 from contacting the first and second connecting tubes 40, 41.

[0147] According to some embodiments of the present application, with reference to Figures 8 and 13, the present application provides a battery 100, wherein a battery cell group 20 includes a plurality of battery cells 21. A plurality of thermal management components 30 are arranged at intervals along a first direction X, each thermal management component 30 having a first end 31 and a second end 32 in a second direction Y, and a battery cell 21 is arranged between two adjacent thermal management components 30. The battery cell group 20 and the thermal management components 30 are accommodated in the housing 10. The first connecting tube 40 is located between the first side wall 122 and the first side surface 212, and the first connecting tube 40 connects the first ends 31 of the two adjacent thermal management components 30. The second connecting tube 41 is located on a side of the battery cell group 20 facing away from the first connecting tube 40 in the second direction Y, and the second connecting tube 41 connects the second ends 32 of the two adjacent thermal management components 30. The first protective mechanism 50 includes a first protective cover 51 and a first sealing plate 52. The first protective cover 51 includes a first top plate 511, a first side plate 512, and a first bottom plate 513. One end of the first top plate 511 is connected to the side of the battery pack 20 facing the top wall 111, and the other end of the first top plate 511 is connected to the first side plate 512. One end of the first bottom plate 513 is connected to the battery pack 20, and the other end of the first bottom plate 513 is connected to the first side plate 512. Along the third direction Z, the first connecting tube 40 is located between the first top plate 511 and the first bottom plate 513. The first bottom plate 513 abuts the bottom wall 121. Along the first direction X, the edges of the first top plate 511, the first side plate 512, the first bottom plate 513, and the first side surface 212 form a first opening (not shown). The first sealing plate 52 is buckled onto and seals the first opening (not shown). The second protective mechanism 53 is sleeved around the second connecting tube 41 and is symmetrically arranged with the first protective mechanism 50. This restricts the exhaust discharged from the pressure relief mechanism 211 from coming into contact with the first connecting pipe 40 and the second connecting pipe 41 .

[0148] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and components may be substituted with equivalents without departing from the scope of the present application. In particular, the various technical features described in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions within the scope of the claims.

Claims

1. A battery, comprising: a battery cell group including a plurality of battery cells; a plurality of thermal management components spaced apart along a first direction, each of the thermal management components having a first end and a second end in a second direction, at least one of the battery cells being disposed between two adjacent ones of the thermal management components, the first direction and the second direction being perpendicular; a first connecting pipe located on one side of the battery cell group in the second direction, the first connecting pipe connecting the first ends of two adjacent ones of the thermal management components; a first protection mechanism configured to shield the first connecting pipe to limit contact between emissions of the battery cells and the first connecting pipe.

2. The battery according to claim 1, wherein, The battery further includes a box body, and the battery cells and the thermal management components are accommodated in the box body; The box body includes a bottom wall and a top wall disposed opposite to each other in a third direction, and a pressure relief mechanism is provided at one end of the battery cell facing the top wall; Along the third direction, at least a part of the first protection mechanism is located between the top wall and the first connecting pipe, and the first direction, the second direction and the third direction are perpendicular to each other in pairs.

3. The battery according to claim 2, wherein, Along the third direction, the projection of the first protection mechanism does not overlap with the projection of the pressure relief mechanism.

4. The battery according to claim 2 or 3, wherein, The box body has a first side wall and a second side wall disposed opposite to each other in the second direction; Along the second direction, the first connecting pipe is located between the first side wall and the battery cell group, and at least a part of the first protection mechanism is located between the first side wall and the battery cell group.

5. The battery according to any one of claims 2-4, wherein, The first protection mechanism includes a first protective cover, the battery cell group has a first side face facing the first connecting pipe, the first protective cover and the first side face together form a first accommodating cavity, and at least a part of the first connecting pipe is located in the first accommodating cavity.

6. The battery according to claim 5, wherein, The first protective cover is connected to the battery cell group and / or the box body.

7. The battery according to claim 5 or 6, wherein, The first protective cover includes a first top plate and a first side plate, one end of the first top plate is connected to the battery cell group, the other end of the first top plate is connected to the first side plate, the first top plate shields the first connecting pipe along the third direction, and the first side plate shields the first connecting pipe along the second direction.

8. The battery according to claim 7, wherein, One end of the first side plate away from the first top plate abuts against the bottom wall.

9. The battery according to claim 7 or 8, wherein, The first protective cover further includes a first bottom plate, one end of the first bottom plate is connected to the battery cell group, the other end of the first bottom plate is connected to the first side plate, and along the third direction, the first connecting pipe is located between the first top plate and the first bottom plate.

10. The battery according to claim 9, wherein, The first bottom plate abuts against the bottom wall.

11. The battery according to any one of claims 5-10, wherein, First openings are formed at both ends of the first accommodating cavity along the first direction, and the first protection mechanism further includes a first sealing plate that closes the first openings.

12. The battery according to any one of claims 1-11, wherein, The first protection mechanism is made of a heat-resistant material.

13. The battery according to any one of claims 2-12, wherein, The battery further includes: a second connecting pipe located on the side of the battery cell group in the second direction away from the first connecting pipe, the second connecting pipe connecting the second ends of two adjacent ones of the thermal management components; The second protection mechanism is configured to shield the second connecting pipe to limit contact between the emissions of the battery cell and the second connecting pipe.

14. The battery according to claim 13, wherein, The second protection mechanism includes a second protective cover. The battery cell group has a second side facing the second connecting pipe. The second protective cover and the second side jointly form a second accommodating cavity, and at least a part of the second connecting pipe is located in the second accommodating cavity.

15. An electrical device, comprising the battery according to any one of claims 1-14, wherein the battery is used to provide electrical energy.

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