CN219203385U - Battery module, battery and power utilization device - Google Patents

Abstract

The application discloses a battery module, a battery and an electric device. The battery module includes: the module body comprises a plurality of battery cells stacked along a first direction, the module body is provided with two first side surfaces which are oppositely arranged along a second direction, and the first direction and the second direction are mutually perpendicular; the first heat management components are arranged in number, are oppositely arranged along the second direction and correspond to the first side faces one by one, and are connected to the first side faces for adjusting the temperature of the battery cells. The technical scheme provided by the application can improve the reliability of the battery.

Description

Battery module, battery and power utilization device

Technical Field

The application relates to the technical field of batteries, in particular to a battery module, a battery and an electric device.

Background

Energy conservation and emission reduction are key to sustainable development of the automobile industry, and electric vehicles become an important component of sustainable development of the automobile industry due to the energy conservation and environmental protection advantages of the electric vehicles. For electric vehicles, battery technology is an important factor in the development of the electric vehicles.

In the development of battery technology, how to improve the reliability of a battery is a technical problem that needs to be solved in battery technology.

Disclosure of Invention

The application provides a battery module, a battery and an electric device, which can improve the reliability of the battery.

The application is realized by the following technical scheme:

in a first aspect, the present application provides a battery module, comprising: the module body comprises a plurality of battery cells stacked on each other along a first direction, wherein the module body is provided with two first side surfaces which are oppositely arranged along a second direction, and the first direction and the second direction are mutually perpendicular; the number of the first heat management components is two, the two first heat management components are oppositely arranged along the second direction and correspond to the first side surfaces one by one, and the first heat management components are connected to the first side surfaces and are used for adjusting the temperature of the battery cells.

In the scheme, the two first heat management components are arranged on the two sides of the module body and are connected with the first side face of the module body, so that on one hand, the heat exchange area of the module body can be increased, the heat management capability of the battery is effectively improved, the risk of thermal runaway of the battery is reduced, and the battery has higher reliability; on the other hand, can effectively resist the expansive force of battery monomer, promote the structural strength and the anti-expansion ability of battery module, and then improve the reliability of battery.

According to some embodiments of the application, the battery module further comprises a glue, the first thermal management component and the first side are glued by the glue.

In the above-mentioned scheme, first thermal management part bonds in the first side through the colloid, can make to have good connection stability between first thermal management part and the first side, guarantees battery module's structural strength.

According to some embodiments of the application, the gel is a heat conductive gel.

In the above-mentioned scheme, first thermal management part bonds in the first side through the heat conduction glue, on the one hand, can guarantee the connection stability between first thermal management part and the first side, on the other hand, can guarantee the heat transfer effect between first thermal management part and the first side, guarantees battery module's reliability.

According to some embodiments of the present application, the module body further includes two end plates, the two end plates are disposed opposite to each other along the first direction, and the plurality of battery cells are disposed between the two end plates; two ends of the first thermal management component along the first direction are respectively connected with the two end plates.

In the above scheme, through setting up end plate and first thermal management part and being connected, can fasten the battery monomer effectively for battery module has higher structural strength and anti expansion energy, makes the battery have higher reliability.

According to some embodiments of the present application, the battery module further includes a fastener connecting the first thermal management component and the end plate.

In the above scheme, the first thermal management component is connected with the end plate through the fastener, so that the connection stability of the first thermal management component and the end plate can be improved, the risk that the first thermal management component is separated from the module body is reduced, and the heat exchange effect of the first thermal management component on the battery cell is ensured.

According to some embodiments of the present application, a first chamber is formed inside the first thermal management component, the first chamber is configured to accommodate a heat exchange medium, the first thermal management component has a first inlet and a second inlet, and the first inlet and the second inlet are both communicated with the first chamber.

In the scheme, the first chamber is formed in the first thermal management component so as to accommodate the heat exchange medium with good heat exchange effect, and the circulation of the heat exchange medium is realized through the first inlet and the second outlet, so that the heat exchange effect with the battery monomer can be improved, the thermal management capability of the battery is improved, and the reliability of the battery is further improved.

According to some embodiments of the present application, the module body has a first end face and a second end face disposed opposite along the first direction; the first thermal management component has oppositely disposed first and second ends in the first direction; along the first direction, the first end protrudes from the first end face, the second end protrudes from the second end face, the first inlet and outlet are formed in the first end, and the second inlet and outlet are formed in the second end.

In the scheme, the first inlet and the second outlet are formed in the part of the first thermal management component, which exceeds the end face of the module body, so that the first inlet and the second outlet can be conveniently connected with the pipeline in an external mode, the layout arrangement of pipelines is facilitated, and the space utilization rate is improved.

According to some embodiments of the present application, the battery module further includes a first pipe through which the first chambers of the two first thermal management components communicate.

In the scheme, the two first heat management components of the battery module are mutually communicated through the first pipeline, so that heat exchange media can be fully utilized, heat exchange efficiency of a battery monomer is improved, heat management capacity of the battery is improved, and reliability of the battery is further improved.

In a second aspect, the present application further provides a battery, including the battery module of the first aspect.

According to some embodiments of the present application, the module body has a second side and a third side disposed opposite to each other along a third direction, and the first direction, the second direction, and the third direction are perpendicular to each other; the battery also includes a second thermal management component disposed on the second side for regulating a temperature of the battery cell.

In the above scheme, through setting up the second thermal management part in order to realize with the heat transfer of second side at the second side of module body, can improve the heat transfer area of module body, improve the thermal management ability of battery, and then improve the reliability of battery.

According to some embodiments of the present application, a first chamber is formed inside the first thermal management component, a second chamber is formed inside the second thermal management component, and the first chamber and the second chamber are used for accommodating a heat exchange medium to regulate the temperature of the battery cell; the battery further includes a second conduit through which the second chamber of the second thermal management component communicates with the first chamber of at least one of the first thermal management components.

In the scheme, the first heat management component and the second heat management component exchange heat with the battery monomer through the heat exchange medium with good heat exchange effect, so that the temperature regulation effect of the battery module can be effectively improved, the heat management capability of the battery is improved, and the reliability of the battery is further improved. Meanwhile, the second heat management component is communicated with at least one first heat management component through the second pipeline, so that heat exchange medium can circulate between the first heat management component and the second heat management component, the utilization rate of the heat exchange medium is guaranteed, and the heat exchange efficiency is improved.

According to some embodiments of the present application, the battery further comprises a case, the battery module is accommodated in the case, the case comprises a bottom wall and a side wall surrounding the bottom wall, and the second thermal management component is the bottom wall.

In the scheme, the box body is arranged to provide protection for the battery module, so that the influence of external substances on the battery module is reduced, and the safety of the battery is ensured. Meanwhile, the second thermal management component is used as the bottom wall of the box body, so that the manufacturing cost of the box body can be effectively saved, and the energy density of the battery can be improved.

According to some embodiments of the application, the number of the battery modules is a plurality, and the plurality of the battery modules are stacked along the second direction.

In the above scheme, the battery has a plurality of battery modules, and a plurality of battery modules pile up the setting along the second direction, on the one hand can make the battery have great electric energy capacity, on the other hand, because each battery module has two first thermal management parts in the second direction in order to realize battery module's high heat transfer performance, so the battery has higher reliability.

In a third aspect, the present application also provides an electrical device comprising a battery according to the second aspect for providing electrical energy.

Additional aspects and advantages of the application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a schematic illustration of a vehicle in some embodiments of the present application;

FIG. 2 is a perspective exploded view of a battery in some embodiments of the present application;

fig. 3 is a perspective view of a battery module according to some embodiments of the present application;

fig. 4 is an exploded perspective view of a battery module according to some embodiments of the present application;

FIG. 5 is a schematic illustration of a first thermal management component, gel, and battery cell according to some embodiments of the present application;

fig. 6 is a schematic view of a battery module according to some embodiments of the present application at another view angle;

FIG. 7 is a schematic illustration of two first thermal management components in some embodiments of the present application;

Fig. 8 is a schematic diagram of a battery in some embodiments of the present application.

Icon: 100-cell; 10-a battery module; 11-a module body; 110-battery cell; 111-a first side; 112-a first end face; 113-a second end face; 114-end plates; 12-a first thermal management component; 120-a first port; 121-a second port; 122-a first end; 123-a second end; 124-a first via; 13-colloid; 140-a second through hole; 15-a first conduit; 16-a strap;

20-a second thermal management component; 21-a second conduit; 22-a first inlet and outlet pipe; 23-a second inlet and outlet pipe;

x-a first direction; y-a second direction; z-a third direction;

1000-vehicle; 200-a controller; 300-motor; 30-a box body; 31-a first part; 32-a second part.

Detailed Description

Embodiments of the technical solutions of the present application will be described in detail below with reference to the accompanying drawings. The following examples are only for more clearly illustrating the technical solutions of the present application, and thus are only examples, and are not intended to limit the scope of protection of the present application.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application; the terms "comprising" and "having" and any variations thereof in the description and claims of the present application and in the description of the figures above are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first," "second," etc. are used merely to distinguish between different objects and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated, a particular order or a primary or secondary relationship. In the description of the embodiments of the present application, the meaning of "plurality" is two or more unless explicitly defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment may be included in at least one embodiment of the present application. The appearances of such phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. Those of skill in the art will explicitly and implicitly appreciate that the embodiments described herein may be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is merely an association relationship describing an association object, which means that three relationships may exist, for example, a and/or B may mean: there are three cases, a, B, a and B simultaneously. In addition, the character "/" herein generally indicates that the front and rear associated objects are an "or" relationship.

In the description of the embodiments of the present application, the term "plurality" refers to two or more (including two), and similarly, "plural sets" refers to two or more (including two), and "plural sheets" refers to two or more (including two).

In the description of the embodiments of the present application, the orientation or positional relationship indicated by the technical terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of describing the embodiments of the present application and for simplifying the description, rather than indicating or implying that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally formed; or may be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, the battery cell may include a lithium ion secondary battery, a lithium ion primary battery, a lithium sulfur battery, a sodium lithium ion battery, a sodium ion battery, a magnesium ion battery, or the like, which is not limited by the embodiment of the present application. The battery cell may be in a rectangular parallelepiped or other shape, etc., and the embodiments of the present application are not limited thereto. Reference to a battery in embodiments of the present application refers to a single physical module that includes one or more battery cells to provide higher voltage and capacity. For example, the battery referred to in the present application may include a battery module. The battery module may include a plurality of battery cells stacked one on another.

The development of battery technology is taking into consideration various design factors such as energy density, cycle life, discharge capacity, charge-discharge rate and other performance parameters, and the reliability of the battery. For example, thermal runaway of the battery can cause the battery to burn and explode, severely affecting the reliability of the battery. Thermal runaway is caused by the fact that the heat generation rate of the battery cells is far higher than the heat dissipation rate, and a large amount of heat is accumulated and not dissipated in time; or, for example, the low temperature environment may cause a decrease in the electrochemical reaction rate inside the battery, affecting the charge and discharge capacity of the battery, so that the reliability of the battery is reduced, resulting in a decrease in the endurance of the electric device.

In order to improve the reliability of the battery, the battery generally further comprises a thermal management component, wherein the thermal management component is used for adjusting the temperature of the battery unit and cooling or heating the battery unit so as to ensure that the battery is in a proper temperature range and ensure higher reliability.

However, the inventors found that the effect of the existing battery being cooled and heated is poor, resulting in lower reliability of the battery. The inventor researches and discovers that in the battery, a thermal management component is usually arranged at the bottom of the battery module to cool or heat the battery cells in the battery module, and the cooling and heating effects on the battery cells are poor due to the fact that the contact area between the thermal management component and the battery module is limited and the heat exchange area is small, so that the thermal management capability of the battery is low, and further the reliability of the battery is low.

In view of this, in order to improve the thermal management capability of the battery so that the battery has higher reliability, the inventors have intensively studied, devised a battery module including a module body including a plurality of battery cells stacked one on another, and two first thermal management members connected to the first sides of the module body to adjust the temperature of the battery cells, the module body having two first sides disposed opposite to each other on both sides of the stacking direction of the battery cells, to realize cooling or heating of the battery cells.

In the above scheme, two first heat management components are arranged in the battery module and the first heat management components are arranged corresponding to the side surfaces of the module body, so that the module body is positioned between the two first heat management components, on one hand, the heat exchange area with the module body can be increased to improve the heat exchange effect of the battery module, the heat management capability of the battery is improved, and the reliability of the battery is further improved; on the other hand, because the battery monomer is when charging and discharging, inside expands because of electrochemical reaction, through set up first thermal management part in the both sides of module body, can resist battery monomer's expansion force effectively for the battery has higher structural strength and anti expansion ability, makes the battery have higher reliability.

The technical scheme described in the embodiment of the application is applicable to electricity utilization devices using batteries.

The electric device may be a vehicle, a mobile phone, a portable device, a notebook computer, a ship, a spacecraft, an electric toy, an electric tool, or the like. The vehicle can be a new energy automobile, and the new energy automobile can be a pure electric automobile, a hybrid electric automobile or an extended range automobile and the like; spacecraft including airplanes, rockets, space planes, spacecraft, and the like; the electric toy includes fixed or mobile electric toys, such as a game machine, an electric car toy, an electric ship toy, and an electric airplane toy; power tools include metal cutting power tools, grinding power tools, assembly power tools, and railroad power tools, such as electric drills, electric grinders, electric wrenches, electric screwdrivers, electric hammers, impact drills, concrete shakers, and electric planers, among others. The embodiment of the application does not limit the electric device in particular.

For convenience of explanation, the following embodiments will be described taking the electric device as an example of the vehicle 1000.

Fig. 1 is a schematic diagram of a vehicle 1000 in some embodiments of the present application.

The controller 200, the motor 300, and the battery 100 may be provided inside the vehicle 1000, and the controller 200 is used to control the battery 100 to supply power to the motor 300. For example, the battery 100 may be provided at the bottom or the head or tail of the vehicle 1000. Battery 100 may be used to power vehicle 1000, for example, battery 100 may be used as an operating power source for vehicle 1000, for circuitry of vehicle 1000, for example, for operating power requirements during start-up, navigation, and operation of vehicle 1000. In another embodiment of the present application, battery 100 may not only serve as an operating power source for vehicle 1000, but may also serve as a driving power source for vehicle 1000, instead of or in part instead of fuel oil or natural gas, to provide driving power for vehicle 1000.

Referring to fig. 2, fig. 2 is a perspective exploded view of battery 100 in some embodiments of the present application.

The battery 100 includes a battery module 10 and a case 30, and the battery module 10 is accommodated in the case 30. The case 30 is used to provide an accommodating space for the battery module 10, and the case 30 may have various structures. In some embodiments, the case 30 may include a first portion 31 and a second portion 32, the first portion 31 and the second portion 32 being overlapped with each other, the first portion 31 and the second portion 32 together defining an accommodating space for accommodating the battery module 10. The second portion 32 may be a hollow structure with one end opened, the first portion 31 may be a plate-shaped structure, and the first portion 31 covers the opening side of the second portion 32, so that the first portion 31 and the second portion 32 together define an accommodating space; the first portion 31 and the second portion 32 may be hollow structures each having an opening at one side, and the opening side of the first portion 31 is engaged with the opening side of the second portion 32. Of course, the case 30 formed by the first portion 31 and the second portion 32 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the battery modules 10 may be one or more, and each battery module 10 may be fixed to the case 30 by a coupling member (e.g., a bolt), or each battery module 10 may be adhesively fixed to the case 30.

In some embodiments, the battery 100 may further be provided with a thermal management member located under the battery module 10, and the thermal management member may act on the bottom surface of the battery module 10 to cool or heat the battery cells 110.

Referring to fig. 3 and 4, fig. 3 is a perspective view of the battery module 10 according to some embodiments of the present application, and fig. 4 is a perspective exploded view of the battery module 10 according to some embodiments of the present application.

The battery module 10 includes a module body 11 and a first thermal management member 12. The module body 11 includes a plurality of battery cells 110 stacked on each other along a first direction x, and the module body 11 has two first side surfaces 111 disposed opposite to each other along a second direction y, and the first direction x is perpendicular to the second direction y. The number of the first thermal management components 12 is two, the two first thermal management components 12 are oppositely arranged along the second direction y and are in one-to-one correspondence with the first side 111, and the first thermal management components 12 are connected to the first side 111 for adjusting the temperature of the battery cell 110.

In some embodiments, the number of battery cells 110 in the module body 11 may be two, three, four, five, or the like. In other embodiments, the number of battery cells 110 in the module body 11 may be one.

The first direction x is a stacking direction of the battery cells 110 and may be a length direction of the module body 11, and in some embodiments, the first direction x may be a thickness direction of the battery cells 110, that is, in the module body 11, large faces of two adjacent battery cells 110 (side faces with larger areas of the battery cells 110) face each other. The second direction y is a direction perpendicular to the first direction x, and the second direction y may be a width direction of the module body 11. In some embodiments, the second direction y may be a width direction of the module body 11. The two opposite sides of the battery cell 110 in the second direction y are sides of the battery cell 110 having a smaller area. In some embodiments, when the first direction x is the length direction of the module body 11 and the second direction y is the width direction of the module body 11, the first side 111 may be a surface perpendicular to the top and bottom surfaces of the module body 11.

The first thermal management component 12 is a component capable of cooling or heating the battery cell 110, and in some embodiments, the interior of the first thermal management component 12 may contain a heat exchange medium to regulate the temperature of the battery cell 110, so that the battery 100 is in a suitable temperature range, and high reliability of the battery 100 is ensured. The heat exchange medium may be a fluid (liquid) or a gas, and the temperature adjustment means heating or cooling the plurality of battery cells 110. In other embodiments, such as when the first thermal management component 12 may only heat the battery cells 110, the first thermal management component 12 may be an electrical heating structure that is energized to heat the battery cells 110.

In some embodiments, the first thermal management component 12 may be plate-shaped. In other embodiments, the first thermal management component 12 may be block-shaped or otherwise shaped.

"two first thermal management components 12 are disposed opposite to each other along the second direction y and are in one-to-one correspondence with the first side surfaces 111", it is understood that the two first thermal management components 12 are disposed on both sides of the module body 11 and are disposed corresponding to the first side surfaces 111. "the first thermal management component 12 is connected to the first side 111" may mean that there is not only a relationship between the first thermal management component 12 and the first side 111 for heat transfer to achieve temperature regulation but also a relationship between the first thermal management component and the first side 111 for physical connection to ensure stability between the first thermal management component and the first side 111; meanwhile, it may also mean that the first thermal management part 12 can be connected with the side of each battery cell 110 of the module body 11.

In the above-mentioned solution, by disposing two first thermal management components 12 on two sides of the module body 11 and in one-to-one correspondence with the first side 111 of the module body 11, on one hand, the heat exchange area of the module body 11 can be increased, the thermal management capability of the battery 100 is effectively improved, the risk of thermal runaway of the battery 100 is reduced, and the battery 100 has higher reliability; on the other hand, the expansion force of the battery cell 110 can be effectively resisted, the structural strength and the expansion resistance of the battery module 10 can be improved, and the reliability of the battery 100 can be further improved.

Referring to fig. 5, fig. 5 is a schematic diagram of a first thermal management component 12, a gel 13, and a battery cell 110 according to some embodiments of the present application.

The battery module 10 further includes a gel 13, and the first thermal management part 12 and the first side 111 are adhered by the gel 13.

The gel 13 is a member provided between the first side 111 and the first thermal management component 12, and has an adhesive property to achieve adhesion between the first thermal management component 12 and the first side 111. In some embodiments, the glue 13 may be acrylic glue, silicone glue, or other adhesive material.

In some embodiments, the first thermal management component 12 extends in the first direction x, and each of the battery cells 110 of the module body 11 can be bonded by the tackiness of the gel 13.

In the above scheme, the first thermal management component 12 is adhered to the first side 111 through the glue 13, so that good connection stability between the first thermal management component 12 and the first side 111 can be achieved, and structural strength of the battery module 10 is ensured.

In other embodiments, the first thermal management component 12 may also be connected to the first side 111 by other connection structures, for example, the first thermal management component 12 may also be secured to the module body 11 by a strap 16 to contact the first side 111 and have good structural stability. In other embodiments, the plurality of battery cells 110 may be integrally secured by straps 16, and the first thermal management component 12 is adhered to the first side 111 by glue 13.

According to some embodiments of the present application, the gel 13 is a heat conductive gel.

The heat conductive glue is a material having thermal conductivity and having adhesiveness, such as a silicone gel. The heat conductive adhesive can realize efficient heat exchange between the first thermal management component 12 and the first side 111 while ensuring that the first thermal management component is connected to the first side 111.

In the above-mentioned scheme, the first thermal management component 12 is adhered to the first side 111 through the heat-conducting adhesive, so that on one hand, the connection stability between the first thermal management component 12 and the first side 111 can be ensured, and on the other hand, the heat exchange effect between the first thermal management component 12 and the first side 111 can be ensured, and the reliability of the battery module 10 can be ensured.

Referring to FIG. 5, in some embodiments, the thickness of the heat-conductive adhesive is w, which satisfies 0.5 mm.ltoreq.w.ltoreq.2 mm, when w is less than 0.5mm, the connection stability between the first thermal management component 12 and the first side 111 is not high, and is easy to fall off, and when w is greater than 2mm, there is a case where the heat exchange effect between the first thermal management component 12 and the first side 111 is not good, and the volumetric energy density of the battery 100 is affected, and for this reason, 0.5 mm.ltoreq.w.ltoreq.2 mm may be made so as to ensure the connection stability of the first thermal management component 12 and the first side 111 to be high and the heat exchange effect to be good. The value of w can be 0.5mm, 0.6mm, 0.7mm, 0.8mm …, 1.8mm, 1.9mm or 2mm.

Referring to fig. 3 and 4, according to some embodiments of the present application, the module body 11 further includes two end plates 114, two end plates 114 are oppositely disposed along the first direction x, and the plurality of battery cells 110 are disposed between the two end plates 114. Both ends of the first thermal management component 12 in the first direction x are connected to two end plates 114, respectively.

The end portions may have a plate-shaped structure, and are disposed at the end portions of the plurality of battery cells 110 to fasten the plurality of battery cells 110 in the first direction x.

Referring to fig. 3 and 4, in some embodiments, the surface of the end plate 114 may be provided with reinforcing ribs or beads so that the end plate 114 has high structural strength and can effectively resist the expansion force of the battery cells 110.

The "both ends of the first thermal management member 12 in the first direction x are connected with the two end plates 114, respectively," may mean that the two end plates 114 are connected by the first thermal management member 12, and the first thermal management member 12 may tighten the two end plates 114 to fasten the plurality of battery cells 110 together, so that the battery module 10 has high structural stability.

In the above-described scheme, by providing the end plate 114 and connecting the end plate 114 with the first thermal management part 12, the battery cells 110 can be effectively fastened, so that the battery module 10 has high structural strength and expansion resistance, and the battery 100 has high reliability.

According to some embodiments of the present application, the battery module 10 further includes a fastener (not shown) that connects the first thermal management component 12 and the end plate 114.

Referring to fig. 3 and 4, in some embodiments, the first thermal management component 12 is formed with a first through hole 124, and the side of the end plate 114 in the second direction y is formed with a second through hole 140, and the second through hole 140 may be provided with an internal thread structure, such as a nut. The fasteners, which in this embodiment may be bolts or screws, pass through the first and second through holes 124, 140 and are threadably coupled to the internal threaded structure to effect connection of the first thermal management component 12 and the end plate 114.

In other embodiments, the fastener may also be a rivet.

In the above-mentioned scheme, the first thermal management component 12 is connected with the end plate 114 through the fastener, so that the connection stability of the first thermal management component 12 and the end plate 114 can be improved, the risk that the first thermal management component 12 is separated from the module body 11 is reduced, and the heat exchange effect of the first thermal management component 12 on the battery cell 110 is ensured.

In other embodiments, the first thermal management component 12 may also be bonded or welded to the end plate 114.

Fig. 6 is a schematic diagram of a battery module 10 according to some embodiments of the present application, and fig. 7 is a schematic diagram of two first thermal management components 12 according to some embodiments of the present application, referring to fig. 6 and fig. 7. Wherein fig. 3 and 6 are views of the battery module 10 at different viewing angles.

The first thermal management component 12 has a first chamber formed therein for receiving a heat exchange medium, the first thermal management component 12 having a first port 120 and a second port 121, the first port 120 and the second port 121 each communicating with the first chamber.

In some embodiments, the first thermal management component 12 may be a water cooled plate, which may be made of aluminum, aluminum alloy, copper, or the like.

In some embodiments, the first thermal management component 12 may be a plate-like structure having a first chamber therein. In some embodiments, the first thermal management component 12 may be formed by bonding or welding two substrates to each other, such as in fig. 4, wherein one of the substrates is formed into a groove by a blow-up or roll process, and the groove is surrounded by the other substrate into a first chamber to accommodate a heat exchange medium, which may flow along the groove.

The heat exchange medium may be a liquid or a gas.

The first inlet and outlet 120 is a portion where the heat exchange medium flows into or out of the first chamber, and referring to fig. 4, the first inlet and outlet 120 may have a tubular structure. In other embodiments, the first port 120 may be a hole-like structure. The second inlet/outlet 121 is a portion through which the heat exchange medium flows into or out of the first chamber, and referring to fig. 6, the second inlet/outlet 121 may have a tubular structure. In other embodiments, the second port 121 may be a hole-like structure.

In the above-mentioned scheme, the first chamber is formed in the first thermal management component 12 to accommodate the heat exchange medium with a better heat exchange effect, and the circulation of the heat exchange medium is realized through the first inlet and outlet 120 and the second inlet and outlet 121, so that the heat exchange effect with the battery cell 110 can be improved, the thermal management capability of the battery 100 is improved, and the reliability of the battery 100 is further improved.

Please combine fig. 3 and 6 according to some embodiments of the present application. The module body 11 has a first end face 112 and a second end face 113 disposed opposite to each other along a first direction x. The first thermal management component 12 has oppositely disposed first and second ends 122, 123 in a first direction x. Along the first direction x, the first end 122 protrudes from the first end surface 112, the second end 123 protrudes from the second end surface 113, the first inlet and outlet 120 is formed at the first end 122, and the second inlet and outlet 121 is formed at the second end 123.

In some embodiments, the dimension of the first thermal management component 12 in the first direction x is greater than the dimension of the module body 11 in the first direction x, and two ends of the first thermal management component 12 respectively extend beyond two ends of the module body 11.

"the first inlet and outlet 120 is formed at the first end 122, and the second inlet and outlet 121 is formed at the second end 123", which may mean that the first inlet and outlet 120 is located at a portion of the first thermal management component 12 beyond the first end face 112 of the module body 11, and the second inlet and outlet 121 is located at a portion of the first thermal management component 12 beyond the second end face 113 of the module body 11; the first inlet and outlet 120 and the second inlet and outlet 121 cannot interfere with the battery cell 110, so that the layout and arrangement of pipelines are facilitated; and can make the heat exchange medium act on each battery cell 110, guaranteeing the effect of the first thermal management component 12 on the temperature regulation of the battery cells 110.

In the above scheme, the first inlet and outlet 120 and the second inlet and outlet 121 are formed at the part of the first thermal management component 12 beyond the end face of the module body 11, so that the first inlet and outlet 120 and the second inlet and outlet 121 can be conveniently connected with a pipeline in an external mode, the layout arrangement of pipelines is facilitated, and the space utilization rate is improved.

In other embodiments, the first end 122 of the first thermal management component 12 may protrude from the first end surface 112, the second end 123 may not protrude from the second end surface 113, and the heat exchange medium may flow between the first end 122 and the second end 123 through the arrangement of the flow channels in the first chamber, so in some embodiments, the first inlet and outlet 120 and the second inlet and outlet 121 may be both disposed at the first end 122.

In other embodiments, the first end 122 of the first thermal management component 12 may not protrude from the first end face 112 and the second end 123 may not protrude from the second end face 113.

According to some embodiments of the present application, referring to fig. 6 and 7, the battery module 10 further includes a first duct 15, and the first chambers of the two first thermal management members 12 are communicated through the first duct 15.

The first duct 15 is a member that communicates with the first chambers of the two first thermal management members 12 of the battery module 10. In some embodiments, the first conduit 15 may be a straight tube, and in other embodiments, the first conduit 15 may be an elbow, as may be appropriate for communicating two first thermal management components 12.

Referring to fig. 6 and 7, the first duct 15 communicates the second inlet and outlet 121 of one of the first thermal management members 12 with the second inlet and outlet 121 of the other first thermal management member 12, and both the second inlet and outlet 121 of one of the first thermal management member 12 and the second inlet and outlet 121 of the other first thermal management member 12 face the inside of the battery module 10 in order to improve the space utilization of the battery module 10.

In the above-mentioned scheme, the two first heat management components 12 of the battery module 10 are mutually communicated through the first pipeline 15, so that the heat exchange medium can be fully utilized, the heat exchange efficiency of the battery unit 110 is improved, the heat management capability of the battery 100 is improved, and the reliability of the battery 100 is further improved.

In some embodiments, the heat exchange medium may enter from the first inlet 120 of one of the first thermal management components 12, flow along the first chamber of that first thermal management component 12, pass through the second inlet 121 of that first thermal management component 12, enter into the first chamber of the other first thermal management component 12 through the first conduit 15 through the second inlet 121 of the other first thermal management component 12, and then flow out from the first inlet 120 of the other first thermal management component 12.

According to some embodiments of the present application, there is also provided a battery 100, the battery 100 including the battery module 10 described above.

Referring to fig. 8, fig. 8 is a schematic diagram of a battery 100 according to some embodiments of the present application.

The module body 11 has a second side surface and a third side surface which are oppositely arranged along a third direction z, and the first direction x, the second direction y and the third direction z are mutually perpendicular; the battery 100 further includes a second thermal management component 20, where the second thermal management component 20 is disposed on the second side surface for adjusting the temperature of the battery cell 110.

In some embodiments, the third direction z may be a height direction of the module body 11, the second side may be a bottom surface of the module body 11, and the third side may be a top surface of the module body 11. The electrode terminals (parts for accomplishing the outward charge and discharge) of the battery cells 110 are generally located at the top surface.

The second thermal management component 20 is a component capable of cooling or heating the battery cell 110, and in some embodiments, the interior of the second thermal management component 20 may contain a heat exchange medium to regulate the temperature of the battery cell 110, so that the battery 100 is in a suitable temperature range, and high reliability of the battery 100 is ensured. The heat exchange medium may be a fluid (liquid) or a gas, and the temperature adjustment means heating or cooling the plurality of battery cells 110. In other embodiments, such as when the second thermal management component 20 may only heat the battery cells 110, the second thermal management component 20 may be an electrical heating structure that is energized to heat the battery cells 110.

When the second side is the bottom surface of the module body 11, the second thermal management part 20 can heat or cool the battery cells 110 from the bottom surface of the battery cells 110.

In the above-mentioned scheme, through setting up second thermal management part 20 in order to realize with the heat transfer of second side at the second side of module body 11, can improve the heat transfer area of module body 11, improve battery 100's thermal management ability, and then improve battery 100's reliability.

According to some embodiments of the present application, the first thermal management component 12 is internally formed with a first chamber and the second thermal management component 20 is internally formed with a second chamber, the first and second chambers being for receiving a heat exchange medium to regulate the temperature of the battery cell 110. The battery 100 further comprises a second conduit 21, the second chamber of the second thermal management component 20 being in communication with the first chamber of the at least one first thermal management component 12 via the second conduit 21.

In some embodiments, the first thermal management component 12 and the second thermal management component 20 may be water cooled plates, which may be made of aluminum, aluminum alloy, copper, or the like.

In some embodiments, the first thermal management component 12 may be a plate-like structure having a first chamber therein and the second thermal management component 20 may be a plate-like structure having a second chamber therein.

The second pipe 21 is a member that communicates the second thermal management member 20 with at least one first thermal management member 12 of the battery module 10, and the second pipe 21 may be a straight pipe or a bent pipe to achieve communication between the second thermal management member 20 and the first thermal management member 12.

In some embodiments, the second thermal management member 20 may communicate with one first thermal management member 12 in the battery module 10 through the second pipe 21, and in other embodiments, the second thermal management member 20 may also communicate with two first thermal management members 12 of the battery module 10 through the second pipe 21.

In some embodiments, the second thermal management component 20 is provided with a first inlet and outlet pipe 22 and a second inlet and outlet pipe 23, and the heat exchange medium can enter the second chamber from the first inlet and outlet pipe 22 of the second thermal management component 20, and can flow out from the second inlet and outlet pipe 23 after passing through the first thermal management component 12.

In the above scheme, the first thermal management component 12 and the second thermal management component 20 exchange heat with the battery unit 110 through the heat exchange medium with good heat exchange effect, so that the temperature regulation effect of the battery module 10 can be effectively improved, the thermal management capability of the battery 100 is improved, and the reliability of the battery 100 is further improved. Meanwhile, since the second thermal management component 20 is communicated with at least one first thermal management component 12 through the second pipeline 21, the heat exchange medium can circulate between the first thermal management component 12 and the second thermal management component 20, the utilization rate of the heat exchange medium is ensured, and the heat exchange efficiency is improved.

According to some embodiments of the present application, the battery 100 further includes a case 30 (see fig. 2), the battery module 10 is accommodated in the case 30, the case includes a bottom wall and a side wall surrounding the bottom wall, and the second thermal management member 20 is the bottom wall.

The bottom wall may refer to a wall capable of supporting the battery cell 110 and corresponding to the bottom surface of the battery cell 110.

The second thermal management component 20 is a bottom wall, and may mean that the second thermal management component 20 can not only regulate the temperature of the battery cell 110, but also serve as a bottom wall of the case.

In the above scheme, the battery module 10 is protected by the box, so that the influence of external substances on the battery module 10 is reduced, and the safety of the battery 100 is ensured. Meanwhile, the second thermal management member 20 serves as the bottom wall of the case, which can effectively save the manufacturing cost of the case and improve the energy density of the battery 100.

In other embodiments, the second thermal management component 20 and the case may be separate components, and the second thermal management component 20 may be disposed between the battery cell 110 and the bottom wall of the case.

According to some embodiments of the present application, the number of the battery modules 10 is plural, and the plurality of battery modules 10 are stacked in the second direction y.

The number of the battery modules 10 may be plural, and it is understood that the number of the battery modules 10 having the first thermal management part 12 may be plural, and the thermal management capability of the battery 100 may be ensured and the reliability of the battery 100 may be improved by the combined action of the first thermal management part 12 and the second thermal management part 20.

In some embodiments, the battery 100 may further include a battery module 10 without the first thermal management member 12, and the battery module 10 without the thermal management member may be located between the plurality of battery modules 10 with the first thermal management member 12.

In the above-mentioned scheme, the battery 100 has a plurality of battery modules 10, and the plurality of battery modules 10 are stacked along the second direction y, on the one hand, it is possible to make the battery 100 have a larger power capacity, and on the other hand, since each battery module 10 has two first thermal management components 12 in the second direction y to achieve high heat exchange performance of the battery module 10, the battery 100 has higher reliability.

According to some embodiments of the present application, there is also provided an electrical device comprising the battery 100 described above for providing electrical energy.

According to some embodiments of the present application, the present application provides a battery module 10, please refer to fig. 3-7. The battery module 10 includes a module body 11, a first thermal management member 12, and a first duct 15. The module body 11 includes a plurality of battery cells 110 and two end plates 114. The two end plates 114 are disposed opposite to each other in the first direction x, and the plurality of battery cells 110 are located between the two end plates 114. A strap 16 is provided between the two end plates 114 and the plurality of battery cells 110, and the strap 16 fixes the end plates 114 and the battery cells 110 as one body. The module body 11 has two first side surfaces 111 disposed opposite to each other along the second direction y. The first direction x may be a length direction of the module body 11, and the second direction y may be a width direction of the module body 11.

The first heat management components 12 are water-cooled plates, the number of the first heat management components 12 is two, and the two first heat management components 12 are oppositely arranged along the second direction y, namely, are positioned at two sides of the module body 11. The first thermal management components 12 are in one-to-one correspondence with the first side surfaces 111 of the module body 11, the first thermal management components 12 are adhered to the corresponding first side surfaces 111 through heat conducting glue, and the first thermal management components 12 are fixed to the end plates 114 through fasteners. The first thermal management component 12 has a first chamber formed therein, the first thermal management component 12 having a first port 120 and a second port 121. The second inlets and outlets 121 of the two first thermal management components 12 are connected by the first conduit 15 to enable communication of the two first thermal management components 12.

The heat exchange medium may enter the first chamber through the first inlet/outlet 120 of the first thermal management component 12 to exchange heat with the battery cell 110 at the corresponding first side 111, adjust the temperature of the battery cell 110, enter the other first thermal management component 12 through the first pipe 15 to exchange heat with the battery cell 110 at the corresponding first side 111 of the other first thermal management component 12, adjust the temperature of the battery cell 110, and finally the heat exchange medium may flow out from the first inlet/outlet 120 of the other first thermal management component 12.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (14)

1. A battery module, comprising:

the module body comprises a plurality of battery cells stacked on each other along a first direction, wherein the module body is provided with two first side surfaces which are oppositely arranged along a second direction, and the first direction and the second direction are mutually perpendicular;

the number of the first heat management components is two, the two first heat management components are oppositely arranged along the second direction and correspond to the first side surfaces one by one, and the first heat management components are connected to the first side surfaces and are used for adjusting the temperature of the battery cells.

2. The battery module according to claim 1, wherein the battery module comprises,

the battery module further comprises a colloid, and the first thermal management component and the first side face are adhered through the colloid.

3. The battery module according to claim 2, wherein,

The colloid is heat conducting glue.

4. The battery module according to claim 1, wherein the battery module comprises,

the module body further comprises two end plates, the two end plates are oppositely arranged along the first direction, and the plurality of battery cells are arranged between the two end plates;

two ends of the first thermal management component along the first direction are respectively connected with the two end plates.

5. The battery module according to claim 4, wherein the battery module,

the battery module further includes a fastener connecting the first thermal management component and the end plate.

6. The battery module according to any one of claims 1 to 5, wherein,

the first heat management component is internally provided with a first chamber for accommodating heat exchange medium, and is provided with a first inlet and a second outlet, and the first inlet and the second outlet are communicated with the first chamber.

7. The battery module according to claim 6, wherein the battery module comprises,

the module body is provided with a first end face and a second end face which are oppositely arranged along the first direction;

The first thermal management component has oppositely disposed first and second ends in the first direction;

along the first direction, the first end protrudes from the first end face, the second end protrudes from the second end face, the first inlet and outlet are formed in the first end, and the second inlet and outlet are formed in the second end.

8. The battery module according to claim 6, wherein the battery module comprises,

the battery module further includes a first pipe through which the first chambers of the two first thermal management parts are communicated.

9. A battery comprising the battery module according to any one of claims 1 to 8.

10. The battery of claim 9, wherein the battery is configured to provide the battery with a plurality of cells,

the module body is provided with a second side surface and a third side surface which are oppositely arranged along a third direction, and the first direction, the second direction and the third direction are mutually perpendicular;

the battery also includes a second thermal management component disposed on the second side for regulating a temperature of the battery cell.

11. The battery of claim 10, wherein the battery is configured to provide the battery with a plurality of cells,

a first chamber is formed inside the first thermal management component, a second chamber is formed inside the second thermal management component, and the first chamber and the second chamber are used for accommodating heat exchange medium so as to regulate the temperature of the battery cell;

The battery further includes a second conduit through which the second chamber of the second thermal management component communicates with the first chamber of at least one of the first thermal management components.

12. The battery according to claim 10 or 11, wherein,

the battery also comprises a box body, the battery module is accommodated in the box body, the box body comprises a bottom wall and a side wall surrounding the bottom wall, and the second thermal management component is the bottom wall.

13. The battery according to any one of claims 9 to 11, wherein,

the number of the battery modules is multiple, and the multiple battery modules are stacked along the second direction.

14. An electrical device comprising a battery as claimed in any one of claims 9 to 13 for providing electrical energy.

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