CN221614023U - Battery and electric equipment - Google Patents

Abstract

The application discloses a battery and electric equipment, and relates to the technical field of batteries. The battery of the embodiment of the application comprises a box body, a cooling plate and a fixing frame, wherein the cooling plate is arranged on the box body, the cooling plate is provided with a liquid joint, the fixing frame is connected with the liquid joint and the box body, the fixing frame comprises a ferrule and a fixing piece, the ferrule is sleeved on the liquid joint, and the fixing piece is connected with the ferrule and the box body. In the battery of the embodiment of the application, the liquid joint is connected with the box body through the fixing frame, and the liquid joint is fixed on the box body, so that the position stability of the liquid joint is improved, and the risks of damaging, tilting and breaking the liquid joint in the production, transportation, installation, test and use processes are reduced.

Description

Battery and electric equipment

Technical Field

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

Background

The battery used by the new energy automobile is usually provided with a cooling plate for exchanging heat with the battery cell, so that the thermal management energy efficiency of the battery is improved. The cooling plate generally includes a cooling water pipe for circulating a liquid refrigerant and a joint for connecting the cooling water pipe. However, for a double-layer module battery or a high-pack battery, the joint length is long, the degree of freedom of movement is large, the position accuracy is difficult to ensure, and the battery is easy to bruise and skew or even break in the battery assembly process.

Disclosure of utility model

The application provides a battery and electric equipment, which can solve the problem that a joint is easy to bruise and skew or even break in the battery assembly process.

In a first aspect, the present application provides a battery comprising a case, a cooling plate and a fixing frame, the cooling plate being disposed on the case, the cooling plate being provided with a liquid joint; the fixing frame is connected with the liquid joint and the box body, and comprises a ferrule and a fixing piece, wherein the ferrule is sleeved on the liquid joint, and the fixing piece is connected with the ferrule and the box body.

In the battery of the embodiment of the application, the liquid joint is connected with the box body through the fixing frame, and the liquid joint is fixed on the box body, so that the position stability of the liquid joint is improved, and the risks of damaging, tilting and breaking the liquid joint in the production, transportation, installation, test and use processes are reduced. The sleeve is sleeved on the liquid joint, and the fixing piece is connected with the ferrule and the box body, so that the connecting surface of the liquid joint and the fixing frame is wrapped by the ferrule, and the fixing frame is prevented from scratching the outer surface of the liquid joint while the connection strength is high and the position of the liquid joint is stable.

In certain embodiments, the ferrule is a resilient member. Therefore, the ferrule is an elastic piece, the sleeve is sleeved on the liquid joint to apply certain elastic force to the liquid joint, so that the ferrule can be attached to the outer surface of the liquid joint, the assembly gap is reduced, and the stability of the fixed frame and the liquid joint fixed connection is improved through extrusion between the ferrule and the liquid joint.

In some embodiments, the securing member includes a surrounding portion that extends circumferentially of the ferrule and is coupled to at least a portion of the ferrule, and a mounting portion coupled to the surrounding portion that is fixedly coupled to the housing.

So, encircle portion and installation department and connect and make the mounting easy make, encircle the circumference that the portion extends along the lasso and is connected with at least a part of lasso for the mounting can be connected with the lasso steadily through encircling the portion, and the installation department is connected with encircling portion and box, can improve the joint strength of mounting and box.

In some embodiments, the number of mounting portions is two, and the two mounting portions are distributed at both ends of the circumferential direction of the surrounding portion.

Therefore, the two mounting portions are distributed at the two ends of the circumference of the surrounding portion, so that acting forces on the surrounding portion are balanced when the two mounting portions are fixedly connected with the box body, acting forces on the ferrule by the mounting portions and the liquid joint by the fixing frame are relatively balanced in the circumferential direction of the ferrule, and the liquid joint is kept stable in position.

In some embodiments, the surrounding portion is snap-connected to at least a portion of the ferrule by a snap-fit structure.

Therefore, the surrounding part is connected with at least one part of the ferrule in a clamping way through the clamping structure, so that the surrounding part and the ferrule are easy to assemble, the manufacturing cost of the fixing piece is reduced, and the connection strength of the ferrule and the fixing piece can be improved to avoid falling.

In some embodiments, the ferrule is formed with a clamping groove, the surrounding portion includes an annular portion and a clamping block, the annular portion is formed with a containing groove with an opening, the clamping block is arranged at the edge of the opening, and the ferrule is arranged through the opening and is partially embedded in the containing groove, and the clamping block is clamped with the clamping groove.

So, wear to locate the opening and partly imbed in the holding tank through the lasso for encircle the portion and exert the pressure from the direction of periphery to inner circumference and upper and lower direction to the lasso, thereby encircle the portion and can press from both sides tight lasso, improve the joint strength of mount and lasso, in battery production, transportation, installation, test and in-process that uses, mounting and lasso are difficult for droing.

In some embodiments, the mounting portion includes a connecting tab and a mounting tab, the connecting tab connecting the mounting tab and the surrounding portion, the mounting tab conforming to the case.

So, laminating through mounting plate and box, increase the area of contact of mounting and box, the mounting plate is connected to the connection piece and is encircleed the portion for encircle the portion and can be with box surface interval certain distance, thereby provide installation space for the liquid joint.

In some embodiments, the mounting tab is secured to the case by a fastener.

Thus, the mounting piece is fixed on the box body through the fastener, so that the mounting part and the box body are firmly connected.

In some embodiments, the mount is mounted near an end of the liquid joint remote from the cooling plate.

Therefore, the fixing frame is arranged near the end part of the liquid joint far away from the cooling plate, so that the free end of the liquid joint is effectively limited, and the position stability of the liquid joint and the connection precision of the liquid joint and the connection position of other interfaces are further ensured.

In some embodiments, the tank is provided with a hollow portion, and the liquid joint penetrates through the tank and is partially located in the hollow portion.

So, through box body formation fretwork portion, liquid joint wears to locate the box and stretches into fretwork portion partially for liquid joint's installation space and the wall partial coincidence of box, thereby improve space utilization, be favorable to improving the energy density of battery.

In some embodiments, the battery includes a battery cell, the battery cell is accommodated in the case, and the hollowed-out portion is formed at a side of the case facing the battery cell.

So, fretwork portion forms in the box towards the free one side of battery, and liquid joint partially stretches into fretwork portion for liquid joint is located the inside of box, thereby the mount is connected on the internal surface of box, reduces the whole volume of battery.

In some embodiments, the number of cooling plates is two, the two sets of cooling plates are opposite and spaced apart along the thickness direction of the cooling plates, each set of cooling plates is connected with a liquid joint, and the two liquid joints are connected through an adapter.

So, two sets of cooling plates set up relatively along the thickness direction of cooling plate, connect two liquid joints of two sets of cooling plates and pass through the adaptor and connect to the coolant liquid can circulate in two sets of cooling plates, increases heat radiating area, improves cooling efficiency.

In some embodiments, the battery includes a plurality of battery cells arranged in two layers with one cooling plate disposed between the two layers of battery cells.

Thus, one of the two cooling plates is arranged between the two layers of battery cells, so that the structure is compact, and the cooling efficiency of the cooling plates is improved.

In a second aspect, the present application provides a powered device comprising a battery according to any of the embodiments described above.

The electric equipment provided by the embodiment of the application comprises the battery provided by the embodiment of the application, so that the electric equipment has all the beneficial effects of the battery provided by the embodiment of the application.

The foregoing description is only an overview of the present application, and is intended to be implemented in accordance with the teachings of the present application in order that the same may be more clearly understood and to make the same and other objects, features and advantages of the present application more readily apparent.

Drawings

Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the application. Also, like reference numerals are used to designate like parts throughout the accompanying drawings. In the drawings:

FIG. 1 is a schematic illustration of a vehicle according to some embodiments of the application;

FIG. 2 is a schematic diagram of an exploded structure of a battery according to some embodiments of the present application;

FIG. 3 is an enlarged partial schematic view of a battery according to some embodiments of the present application;

FIG. 4 is a schematic structural view of a fixing frame according to some embodiments of the present application;

FIG. 5 is a schematic diagram illustrating a structure of a fixing frame according to some embodiments of the present application in a top view;

Fig. 6 is a schematic view illustrating a cross-sectional structure of a fixing frame A-A according to some embodiments of the present application.

Description of main reference numerals:

A vehicle 1000, a motor 300, a controller 400;

The battery 100, the case 10, the first portion 11, the second portion 12, the hollowed-out portion 103, the through hole 104, the battery cell 20, the cooling plate 30, the liquid joint 31, the fixing frame 40, the ferrule 41, the clamping groove 413, the fixing member 42, the surrounding portion 422, the clamping structure 4221, the ring portion 4222, the opening 4223, the accommodating groove 4224, the clamping block 4225, the mounting portion 424, the connecting piece 4241, the mounting piece 4243, the fastening member 426, and the rivet 4261.

Detailed Description

Embodiments of the technical scheme 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 aspects of the present application, and thus are merely examples, and are not intended to limit the scope 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 of the application and the claims and the description of the drawings above are intended to cover a non-exclusive inclusion.

In the description of embodiments of the present application, the technical terms "first," "second," and the like 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 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, and indicates that three relationships may exist, for example, a and/or B may indicate: a exists alone, A and B exist together, and B exists alone. 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" means two or more (including two), and similarly, "plural sets" means two or more (including two), and "plural sheets" means 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 description and simplification of the description, and do not indicate or imply 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 should 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 specific circumstances.

Currently, the application of power batteries is more widespread from the development of market situation. The power battery is not only applied to energy storage power supply systems such as hydraulic power, firepower, wind power and solar power stations, but also widely applied to electric vehicles such as electric bicycles, electric motorcycles, electric automobiles and the like, and various fields such as aerospace and the like. With the continuous expansion of the application field of the power battery, the market demand of the power battery is also continuously expanding.

The batteries mentioned in the art can be classified into disposable batteries and rechargeable batteries according to whether they are rechargeable or not. Disposable batteries (Primary batteries), i.e., primary batteries, cannot be recharged for use after the charge is exhausted and can only be discarded. The rechargeable battery is also called a secondary battery (Secondary Battery) or a secondary battery and a storage battery, and can be recycled after being charged for a plurality of times. The types of rechargeable batteries that are currently common are: lead acid batteries, nickel hydrogen batteries, and lithium ion batteries.

The battery described in the embodiments of the present application refers to a rechargeable battery. Reference to a battery in accordance with an embodiment 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, a battery pack, or the like.

In the process of charging and discharging the battery, the positive and negative active substances undergo a violent chemical reaction, so that chemical energy is converted into electric energy, and a certain amount of heat is released along with the chemical reaction. Heat accumulation easily causes risks of thermal runaway and thermal spread of the battery, so as the market and application grow and expand, the requirements on the cooling integration efficiency of the battery are also higher and higher.

For the battery adopting the liquid cooling heat dissipation mode, the existing battery pack adopts a double-layer design, stacks the battery modules, or adds a bracket in the battery pack to support the upper-layer modules so as to improve the integration efficiency of the water cooling plate. Water-cooled joints are typically provided on the water-cooled plates to reduce the risk of leakage of the cooling liquid.

However, since the length required for extending the water-cooled joint from the water-cooled plate to another layer of water-cooled plate is longer, the degree of freedom of movement is greater, and the water-cooled joint is easily skewed, bumped or even broken during the assembly process, which adversely affects the sealability of the water-cooled joint.

Based on the above consideration, the application provides a novel battery, wherein the water-cooling joint is connected with the box body of the battery through the fixing frame, so that the position of the water-cooling joint is fixed relative to the box body, the position stability of the water-cooling joint is ensured, and the possibility of skew, bruise and even fracture of the water-cooling joint is further reduced.

The battery disclosed by the embodiment of the application can be used for electric equipment using the battery as a power supply or various energy storage systems using the battery as an energy storage element. The powered device may be, but is not limited to, a cell phone, a tablet, a notebook computer, an electric toy, an electric tool, a battery car, an electric automobile, a ship, a spacecraft, and the like. Among them, the electric toy may include fixed or mobile electric toys, such as game machines, electric car toys, electric ship toys, electric plane toys, and the like, and the spacecraft may include planes, rockets, space planes, and spacecraft, and the like.

For convenience of description, the following embodiments take a powered device according to an embodiment of the present application as an example of the vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the application. The vehicle 1000 may be a fuel oil vehicle, a gas vehicle or a new energy vehicle, and the new energy vehicle may be a pure electric vehicle, a hybrid vehicle or a range-extended vehicle. The battery 100 is provided in the interior of the vehicle 1000, and the battery 100 may be provided at the bottom or the head or the tail of the vehicle 1000. The battery 100 may be used for power supply of the vehicle 1000, for example, the battery 100 may be used as an operating power source of the vehicle 1000. The vehicle 1000 may also include a controller 400 and a motor 300, the controller 400 being configured to control the battery 100 to power the motor 300, for example, for operating power requirements during start-up, navigation, and travel of the vehicle 1000.

In some embodiments 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 an exploded view of a battery 100 according to some embodiments of the present application. The battery 100 includes a case 10 and a battery cell 20, and the battery cell 20 is accommodated in the case 10. The case 10 is used to provide an accommodating space for the battery cell 20, and the case 10 may have various structures. In some embodiments, the case 10 may include a first portion 11 and a second portion 12, the first portion 11 and the second portion 12 being overlapped with each other, the first portion 11 and the second portion 12 together defining an accommodating space for accommodating the battery cell 20. The second portion 12 may be a hollow structure with one end opened, the first portion 11 may be a plate-shaped structure, and the first portion 11 covers the opening side of the second portion 12, so that the first portion 11 and the second portion 12 together define a containing space; the first portion 11 and the second portion 12 may be hollow structures each having an opening at one side, and the opening side of the first portion 11 is engaged with the opening side of the second portion 12. Of course, the case 10 formed by the first portion 11 and the second portion 12 may be of various shapes, such as a cylinder, a rectangular parallelepiped, or the like.

In the battery 100, the plurality of battery cells 20 may be connected in series, parallel or a series-parallel connection, wherein the series-parallel connection refers to that the plurality of battery cells 20 are connected in series or parallel. The plurality of battery cells 20 can be directly connected in series or in parallel or in series-parallel, and then the whole formed by the plurality of battery cells 20 is accommodated in the box 10; of course, the battery 100 may also be a form of a plurality of battery cells 20 connected in series or parallel or series-parallel to form a battery 100 module, and a plurality of battery 100 modules connected in series or parallel or series-parallel to form a whole and accommodated in the case 10. The battery 100 may further include other structures, for example, the battery 100 may further include a bus member for making electrical connection between the plurality of battery cells 20.

Wherein each battery cell 20 may be a secondary battery 100 or a primary battery 100; but not limited to, lithium sulfur battery 100, sodium ion battery 100, or magnesium ion battery 100. The battery cell 20 may be in the shape of a cylinder, a flat body, a rectangular parallelepiped, or other shapes, etc.

Referring to fig. 3, and further referring to fig. 3 and 4, fig. 3 is a partially enlarged schematic view of a battery 100 according to some embodiments of the present application, and is also a combined schematic view of a liquid joint 31 and a case 10 according to an embodiment of the present application. The battery 100 provided by the embodiment of the application comprises a box body 10, a cooling plate 30 and a fixing frame 40, wherein the cooling plate 30 is arranged on the box body 10, the cooling plate 30 is provided with a liquid joint 31, and the fixing frame 40 is connected with the liquid joint 31 and the box body 10.

Specifically, the cooling plate 30 generally has a plurality of heat conductive pipes (not shown), and the plurality of heat conductive pipes are arranged in parallel and closely to form a plate structure, and are connected to each other through a confluence structure. The battery unit 20 (or module) can be placed on the cooling plate 30 to exchange heat with the cooling liquid flowing in the cooling plate 30, and the cooling liquid takes away a certain amount of heat when flowing out of the cooling plate 30, so as to achieve the effect of cooling and heat dissipation of the battery 100. The cooling plate 30 may be formed by metal plastic working, and may have a large surface area, attached to one side of the battery cell 20 or the module. The cooling plate 30 has a large surface area, so that the battery cells 20 or modules can be attached to the square battery 100 to the maximum extent, and the heat dissipation effect is good.

Taking the case 10 as a rectangular parallelepiped, for example, the cooling plate 30 may be provided on one side in the height direction of the case 10, for example, the cooling plate 30 is attached to the bottom surface of the case 10. The liquid joint 31 is connected to the cooling plate 30 and communicates with the heat conduction pipe to conduct the cooling liquid. The liquid joint 31 may be made of a metal material having good thermal conductivity, such as aluminum, aluminum alloy, copper alloy, and the like. To ensure the tightness of the liquid joint 31, the liquid joint 31 may be fixed and hermetically connected to the cooling plate 30 by welding, avoiding leakage of the cooling liquid.

The fixing frame 40 may have a composite structure partially contacting the liquid joint 31 and connected to the liquid joint 31, and partially fixedly connected to the wall surface of the case 10 adjacent to and opposite to the liquid joint 31. Since the liquid joint 31 is generally tubular, the fixing frame 40 can be sleeved on the liquid joint 31 to apply a circumferential supporting force to the liquid joint 31, so as to keep the position fixed, and meanwhile, the installation space of the fixing frame 40 is saved.

In the battery 100 according to the embodiment of the present application, the fixing frame 40 connects the liquid joint 31 and the case 10, and the liquid joint 31 is fixed to the case 10, so that the positional stability of the liquid joint 31 is improved, and the risk of bruising, warping, and breaking of the liquid joint 31 during production, transportation, installation, testing and use is reduced.

Referring to fig. 3 and 4, in some embodiments, the holder 40 includes a collar 41 and a fixing member 42, the collar 41 is configured to be sleeved on the liquid joint 31, and the fixing member 42 connects the collar 41 and the case 10.

Specifically, the collar 41 is in a closed ring shape, and the profile shape of the collar 41 matches the cross-sectional shape of the liquid joint 31, and may be circular, elliptical, square, racetrack, etc., which is not limited in this embodiment of the application. Illustratively, the liquid fitting 31 is tubular and the ferrule 41 is annular. The ferrule 41 is fitted over the liquid joint 31, and the inner peripheral surface of the ferrule 41 is in close contact with the outer surface of the liquid joint 31.

The fixing member 42 is connected to the outer periphery of the ferrule 41 and may not be in direct contact with the liquid joint 31. The material hardness of the fixing member 42 is greater than that of the ferrule 41, the ferrule 41 can be made of soft high-temperature resistant materials such as rubber and flexible plastic, and the fixing member 42 can be made of engineering plastic, metal materials and the like.

In the related art, the connector is fixed by adopting a hard fixing bracket, and the outer surface of the connector is easy to scratch in the processes of battery production, transportation, installation, test and use, so that the tightness of the water-cooled connector is adversely affected.

According to the fixing frame 40 provided by the embodiment of the application, the soft ferrule 41 is compounded with the hard fixing piece 42, the ferrule 41 is sleeved on the liquid joint 31, and the fixing piece 42 is connected with the ferrule 41 and the box body 10, so that the connecting surface of the liquid joint 31 and the fixing frame 40 is wrapped by the ferrule 41, the connection strength is high, the position of the liquid joint 31 is stable, and meanwhile, the fixing frame 40 is prevented from scratching the outer surface of the liquid joint 31.

Referring to fig. 4, in some embodiments, the ferrule 41 is a resilient member.

Specifically, with reference to fig. 3, when the fixing frame 40 is sleeved on the liquid joint 31 from one end of the liquid joint 31, the ferrule 41 can elastically deform under the action of an external force to enlarge the caliber of the ferrule 41, so that the liquid joint 31 is smoothly sleeved in the ferrule 41, then the external force is removed, the ferrule 41 recovers a certain deformation amount, the caliber is reduced, and the inner ring of the ferrule 41 is tightly attached to the outer surface of the liquid joint 31. The inner diameter of the ferrule 41 under the action of no external force can be slightly smaller than the outer diameter of the liquid joint 31, when the ferrule 41 is sleeved on the liquid joint 31, the liquid joint 31 applies certain radial outward pressure to the ferrule 41, so that the ferrule 41 generates elastic deformation and applies radial inward elastic force to the liquid joint 31, interference fit between the ferrule 41 and the liquid joint 31 is realized, and the liquid joint 31 and the ferrule 41 are connected stably by extrusion.

In this way, the ferrule 41 is an elastic member, and the ferrule 41 is sleeved on the liquid joint 31 to apply a certain elastic force to the liquid joint 31, so that the ferrule 41 can be attached to the outer surface of the liquid joint 31, the assembly gap is reduced, and the stability of the fixed connection between the fixing frame 40 and the liquid joint 31 is improved through the extrusion between the ferrule 41 and the liquid joint 31.

Referring again to fig. 3 and 4, in some embodiments, the fixing member 42 includes a surrounding portion 422 and a mounting portion 424 connected to the surrounding portion 422, the surrounding portion 422 extending along a circumferential direction of the ferrule 41 and being connected to at least a portion of the ferrule 41, the mounting portion 424 being fixedly connected to the case 10.

Specifically, the surrounding portion 422 may be fitted and wrapped around the outer periphery of the ferrule 41, and extend along the circumferential direction of the ferrule 41 to form an open ring shape. The surrounding portion 422 may extend for one half of a circumference, one third of a circumference, three quarters of a circumference, etc. along the circumference of the collar 41. The width of the surrounding portion 422 from the outer circumferential center of the ferrule 41 in the radial direction of the ferrule 41 may be smaller than the width of the ferrule 41 so that the inner circumference of the surrounding portion 422 forms a certain gap with the outer surface of the liquid joint 31, avoiding the surrounding portion 422 from contacting the outer surface of the liquid joint 31.

The surrounding portion 422 forms a split ring and opens toward the portion of the tank 10 fixedly connected to the mounting portion 424, so to speak, the portion of the ferrule 41 not covered by the surrounding portion 422 is located between the tank 10 and the liquid joint 31, so as to add buffer protection to the tank 10 and the liquid joint 31.

The mounting portion 424 is fixedly connected with the surrounding portion 422, and it should be noted that the mounting portion 424 and the surrounding portion 422 are integrally formed to increase the strength of the fixing frame 40. In other embodiments, the mounting portion 424 and the surrounding portion 422 may also be formed separately and joined together during assembly. The mounting portion 424 may extend outwardly from the surrounding portion 422 in a radial direction of the collar 41, and an end of the mounting portion 424 remote from the surrounding portion 422 is fixedly connected to the case 10. The mounting portion 424 may be fixedly connected to the case 10 by at least one of riveting, screwing, gluing, snap-fit connection, and the like.

In this way, the surrounding portion 422 and the mounting portion 424 are connected such that the fixing member 42 is easily molded, the surrounding portion 422 extends in the circumferential direction of the ferrule 41 and is connected with at least a portion of the ferrule 41, so that the fixing member 42 can be stably connected with the ferrule 41 through the surrounding portion 422, and the mounting portion 424 is connected with the surrounding portion 422 and the case 10, so that the connection strength of the fixing member 42 with the case 10 can be improved.

Referring to fig. 5, in some embodiments, the number of the mounting portions 424 is two, and the two mounting portions 424 are distributed at two ends of the circumferential direction of the surrounding portion 422.

Specifically, the two mounting portions 424 are respectively connected to both ends of the surrounding portion 422 in the circumferential direction, and in fig. 3, the mounting portions 424 extend from the opening of the surrounding portion 422 to both sides of the liquid joint 31 and also to the tank 10. The two mounting portions 424 may be identical in shape and material and may be further symmetrically distributed about a diameter of the ferrule 41 such that the force provided by the mount 40 on both sides of the liquid joint 31 is sufficient to balance the liquid joint 31.

In this way, the two mounting portions 424 are distributed at two ends of the circumferential direction of the surrounding portion 422, so that the acting force on the surrounding portion 422 is balanced when the two mounting portions 424 are fixedly connected with the box 10, and the acting force on the ferrule 41 by the mounting portions 424 and the acting force on the liquid joint 31 by the fixing frame 40 are relatively balanced in the circumferential direction of the ferrule 41, so that the liquid joint 31 is kept stable.

Referring to fig. 6, in some embodiments, the surrounding portion 422 is engaged with at least a portion of the ferrule 41 via an engagement structure 4221.

Specifically, the entire ferrule 41 is annular, a certain width is provided between the inner periphery of the ferrule 41 and the outer periphery of the ferrule 41, the inner periphery of the ferrule 41 is the side facing the center of the circle and contacting the liquid joint 31, the outer periphery of the ferrule 41 is the side of the ferrule 41 facing away from the liquid joint 31, and the upper surface of the ferrule 41 extends in the radial direction of the ferrule 41 and connects the inner periphery and the outer periphery of the ferrule 41. The engagement structure 4221 may be engaged with the outer periphery of the ferrule 41 and/or the upper and lower surfaces of the ferrule 41. For example, the collar 41 may have grooves formed on the upper and lower surfaces, and the engaging structure 4221 of the surrounding portion 422 is a protrusion and engages with the grooves on the upper and lower surfaces of the collar 41. For another example, the collar 41 may have a flange formed on the outer periphery, and the engagement structure 4221 of the surrounding portion 422 is a groove and engages with the flange of the collar 41.

Further, the connection surface between the ferrule 41 and the engaging structure 4221 may be reinforced by an adhesive, a structural adhesive, or the like.

In this way, the surrounding portion 422 is connected with at least a part of the ferrule 41 by the engaging structure 4221, so that the surrounding portion 422 and the ferrule 41 are easy to assemble, the manufacturing cost of the fixing member 42 is reduced, and the connection strength of the ferrule 41 and the fixing member 42 can be improved to avoid falling.

With continued reference to fig. 6, in some embodiments, the collar 41 is formed with a slot 413, the surrounding portion 422 includes an annular portion 4222 and a latch 4225, the annular portion 4222 is formed with a receiving slot 4224 having an opening 4223, the latch 4225 is disposed at an edge of the opening 4223, the collar 41 is disposed through the opening 4223 and is partially embedded in the receiving slot 4224, and the latch 4225 is engaged with the slot 413.

Specifically, the ferrule 41 has a concave-down-surface locking groove 413 formed on the upper surface, and a concave-up-surface locking groove 413 formed on the lower surface, and the locking groove 413 extends in the circumferential direction of the ferrule 41. The ring portion 4222 extends along the circumference of the ferrule 41 and covers the outer circumference of the ferrule 41 and the partial upper and lower surfaces of the ferrule 41 between the outer circumference and the card slot 413. The portion of the ring portion 4222 covering the outer periphery of the collar 41 forms an angle with the portion covering the upper and lower surfaces of the collar 41 and defines a receiving groove 4224. The opening 4223 of the receiving groove 4224 faces the inner periphery of the ferrule 41, a portion of the ferrule 41 between the card groove 413 and the outer periphery of the ferrule 41 is fitted into the receiving groove 4224 from the opening 4223, and a portion of the ferrule 41 between the card groove 413 and the inner periphery of the ferrule 41 protrudes from the opening 4223 outside the receiving groove 4224. The latch 4225 extends from the edge of the opening 4223 of the receiving groove 4224 in a direction opposite to the upper and lower surfaces of the ferrule 41, and is engaged with the latch 413.

In this way, the collar 41 is inserted into the opening 4223 and partially embedded in the accommodating groove 4224, and the clamping block 4225 is engaged with the clamping groove 413, so that the surrounding portion 422 applies pressure to the collar 41 in the direction from the outer circumference to the inner circumference and in the up-down direction, the surrounding portion 422 can clamp the collar 41, the connection strength between the fixing frame 40 and the collar 41 is improved, and the fixing piece 42 and the collar 41 are not easy to fall off in the process of producing, transferring, installing, testing and using the battery 100.

Referring to fig. 3 and 4, in some embodiments, the mounting portion 424 includes a connecting piece 4241 and a mounting piece 4243, the connecting piece 4241 connects the mounting piece 4243 and the surrounding portion 422, and the mounting piece 4243 is attached to the case 10.

Specifically, the connecting piece 4241 may be flat and may extend in a direction in which the liquid joint 31 is inserted into the ferrule 41. One end of the connection piece 4241 is connected to the end of the surrounding portion 422 in the circumferential direction, and one end of the connection piece 4241 remote from the surrounding portion 422 is connected to the mounting piece 4243. The connecting piece 4241 forms an included angle of more than 0 ° and less than 180 ° with the mounting piece 4243. The shape of the connecting piece 4241 and the mounting piece 4243 is not limited in this embodiment, and as illustrated in fig. 3, the mounting piece 4243 may be a square sheet structure, the connecting piece 4241 may be a trapezoid sheet structure, the short side of the connecting piece 4241 is formed at one end of the surrounding portion 422 along the circumferential direction thereof, and the long side of the connecting piece 4241 coincides with one of four sides of the mounting piece 4243.

The connecting piece 4241 and the mounting piece 4243 are integrally formed to form a unitary structure, and are different portions of the mounting portion 424 that are distinguished by the location. In some extended embodiments, the connecting piece 4241 and the mounting piece 4243 may also be separate structures and fixedly connected together.

In this way, the mounting piece 4243 is attached to the case 10, so that the contact area between the fixing piece 42 and the case 10 is increased, and the connecting piece 4241 connects the mounting piece 4243 and the surrounding portion 422, so that the surrounding portion 422 can be spaced from the surface of the case 10 by a certain distance, thereby providing a mounting space for the liquid joint 31.

Referring to fig. 3 and 5, in some embodiments, the mounting tabs 4243 are secured to the case 10 by fasteners 426.

Specifically, the fastener 426 may be a rivet 4261, a bolt, or the like, and in the embodiment shown in fig. 5, the fastener 426 is a rivet 4261, and the rivet 4261 penetrates the mounting plate 4243 and secures the fixing member 42 to the surface of the case 10 via the mounting plate 4243.

In this way, the mounting piece 4243 is fixed to the case 10 by the fastener 426, so that the mounting portion 424 is firmly connected to the case 10.

Referring to fig. 3, in some embodiments, a mount 40 is mounted near an end of the liquid joint 31 remote from the cooling plate 30.

Specifically, the cooling plate 30 is located on one side in the height direction of the tank 10, and the liquid joint 31 extends from the cooling plate 30 to the other side in the height direction of the tank 10. The end of the liquid connection 31 remote from the cooling plate 30 has a large degree of freedom and can be connected to another pipe, valve or port. The fixing frame 40 is sleeved on the liquid joint 31 and is fixed near a port of the liquid joint 31 far away from the cooling plate 30, so that the freedom of movement of the liquid joint 31 is effectively limited.

In this way, the fixing frame 40 is installed near the end of the liquid joint 31 far away from the cooling plate 30, so that the free end of the liquid joint 31 is effectively limited, and the position stability of the liquid joint 31 and the connection precision of the liquid joint 31 and other connection positions are further ensured.

With continued reference to fig. 3, in some embodiments, the case 10 is provided with a hollow portion 103, and the liquid joint 31 is disposed through the case 10 and partially located in the hollow portion 103.

Specifically, the case 10 includes a bottom and a top opposite to each other in the height direction of the case 10, and a sidewall connecting the bottom and the top. The cooling plate 30 may be disposed at the bottom of the case 10, and the hollowed-out portion 103 is formed on the sidewall of the case 10, accordingly. The bottom of the case 10 is formed with a through hole 104 communicating with the hollowed-out portion 103, and the liquid joint 31 passes through the through hole 104 in the height direction of the case 10 and extends into the hollowed-out portion 103.

In this way, the hollow portion 103 is formed through the case 10, and the liquid joint 31 penetrates through the case 10 and partially stretches into the hollow portion 103, so that the installation space of the liquid joint 31 partially coincides with the wall surface of the case 10, thereby improving the space utilization efficiency and being beneficial to improving the energy density of the battery 100.

Referring to fig. 2 and 3, in some embodiments, the battery 100 includes a battery cell 20, the battery cell 20 is accommodated in a case 10, and a hollowed-out portion 103 is formed on a side of the case 10 facing the battery cell 20.

Specifically, the top, bottom and side walls of the case 10 are surrounded to form an accommodating space. The battery cell 20 is received in the receiving space at the inner side of the case 10, and the case 10 isolates the battery cell 20 from the external environment of the case 10. The hollowed-out portion 103 is formed on one side of the case 10 facing the battery cell 20, so to speak, the hollowed-out portion 103 is formed on the inner surface of the case 10, and the hollowed-out portion 103 may be formed by hollowed-out a part of the area on the inner surface of the case 10 along the thickness direction of the case 10.

The depth of the hollowed-out portion 103 in the thickness direction of the case 10 may form a step, for example, the depth of the partially hollowed-out portion 103 close to the cooling plate 30 is smaller than the thickness of the wall surface of the case 10, a portion of the case 10 facing the external environment of the case 10 is reserved, and the partially hollowed-out portion 103 away from the cooling plate 30 penetrates the wall surface of the case 10. Rivets 4261 on the mount 40 may be driven into the remaining portion of the housing 10, and the liquid joint 31 may be fixedly connected to the portion of the housing 10 facing the environment outside the housing 10 through the mount 40.

Thus, the hollowed-out portion 103 is formed on one side of the case 10 facing the battery cell 20, and the liquid joint 31 partially extends into the hollowed-out portion 103, so that the liquid joint 31 is located inside the case 10, and the fixing frame 40 is connected to the inner surface of the case 10, thereby reducing the overall volume of the battery 100.

The battery 100 provided in the above embodiment is applicable to the type of battery 100 in which the liquid joint 31 is located inside the case 10.

In some embodiments, the number of cooling plates 30 is two, and two sets of cooling plates 30 are disposed opposite to each other in the thickness direction of the cooling plates 30 at intervals, and each set of cooling plates 30 is connected with one liquid joint 31, and the two liquid joints 31 are connected by an adapter (not shown).

Specifically, one of the two sets of cooling plates 30 is located at the bottom of the case 10, and the other set is located at the middle position of the cooling plate 30 in the height direction of the case 10, and both sets of cooling plates 30 may be spread in the direction perpendicular to the height direction of the case 10. The cooling plate 30 positioned at the bottom of the cooling plate 30 may be disposed at a side of the case 10 facing the external environment, may be disposed at a side of the case 10 facing the battery cells 20, or may be integrally combined with a wall surface of the bottom of the case 10.

The liquid joint 31 connected to the cooling plate 30 at the bottom of the case 10 may extend upward in the thickness direction of the cooling plate 30 and be fixed to the sidewall of the case 10 by the fixing frame 40, and then be connected to the adapter, communicating with another liquid joint 31 connected to the other end of the adapter.

Thus, the two sets of cooling plates 30 are oppositely arranged along the thickness direction of the cooling plates 30, and the two liquid joints 31 connecting the two sets of cooling plates 30 are connected through the adapter, so that cooling liquid can circulate in the two sets of cooling plates 30, the heat dissipation area is increased, and the cooling efficiency is improved.

In some embodiments, the battery 100 includes a plurality of battery cells 20, the plurality of battery cells 20 being arranged in two layers, with one cooling plate 30 disposed between the two layers of battery cells 20.

Specifically, one cooling plate 30 of the two cooling plates 30 is disposed between the two layers of the battery cells 20, so that the cooling plate 30 can simultaneously radiate heat and cool the two layers of the battery cells 20, and the other cooling plate 30 can be disposed on the opposite side of one layer of the battery cells 20 to the other layer of the battery cells 20. For example, two layers of battery cells 20 are spaced apart from and disposed opposite to each other in the height direction of the case 10, the cooling plates 30 are arranged such that the thickness direction of the cooling plates 30 coincides with the height direction of the case 10, one cooling plate 30 is located at the bottom of the case 10, the other cooling plate 30 is spaced apart from and disposed opposite to the cooling plate 30 at the bottom of the case 10 in the height direction of the case 10, one layer of battery cells 20 is placed on the cooling plate 30 at the bottom of the case 10, and the other layer of battery cells 20 is placed on the other cooling plate 30.

In this way, one cooling plate 30 of the two cooling plates 30 is disposed between the two layers of battery cells 20, so that the structure is compact, and simultaneously the cooling efficiency of the cooling plates 30 is improved.

Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the application, and are intended to be included within the scope of the appended claims and description. In particular, the technical features mentioned in the respective embodiments may be combined in any manner as long as there is no structural conflict. The present application is not limited to the specific embodiments disclosed herein, but encompasses all technical solutions falling within the scope of the claims.

Claims (14)

1. A battery, comprising:

A case;

the cooling plate is arranged on the box body and is provided with a liquid joint; and

The fixing frame is connected with the liquid joint and the box body, the fixing frame comprises a ferrule and a fixing piece, the ferrule is used for being sleeved on the liquid joint, and the fixing piece is connected with the ferrule and the box body.

2. The battery of claim 1, wherein the ferrule is an elastic member.

3. The battery according to claim 1, wherein the fixing member includes a surrounding portion and a mounting portion connected to the surrounding portion, the surrounding portion being connected to at least a portion of the ferrule along a circumferential extension of the ferrule, the mounting portion being fixedly connected to the case.

4. A battery according to claim 3, wherein the number of said mounting portions is two, and two of said mounting portions are distributed at both ends in the circumferential direction of said surrounding portion.

5. The battery of claim 3, wherein the surround is snap-fit connected to at least a portion of the ferrule by a snap-fit structure.

6. The battery according to claim 5, wherein the collar is formed with a clamping groove, the surrounding portion includes an annular portion and a clamping block, the annular portion is formed with a containing groove with an opening, the clamping block is arranged at the edge of the opening, the collar is arranged through the opening in a penetrating manner and is partially embedded in the containing groove, and the clamping block is clamped with the clamping groove.

7. A battery according to claim 3, wherein the mounting portion includes a connecting piece and a mounting piece, the connecting piece connecting the mounting piece and the surrounding portion, the mounting piece being fitted to the case.

8. The battery of claim 7, wherein the mounting tab is secured to the case by a fastener.

9. The battery of claim 1, wherein the mount is mounted proximate an end of the liquid connection remote from the cooling plate.

10. The battery according to claim 1, wherein the case is provided with a hollowed-out portion, and the liquid joint is disposed through the case and partially located in the hollowed-out portion.

11. The battery according to claim 10, wherein the battery includes a battery cell accommodated in the case, and the hollowed-out portion is formed at a side of the case facing the battery cell.

12. The battery according to claim 1, wherein the number of the cooling plates is two, the two cooling plates are arranged opposite to each other in the thickness direction of the cooling plates at intervals, each cooling plate is connected with one of the liquid connectors, and the two liquid connectors are connected by an adapter.

13. The battery of claim 12, wherein the battery comprises a plurality of cells arranged in two layers, wherein one of the cooling plates is disposed between two layers of the cells.

14. A powered device comprising a battery as claimed in any one of claims 1-13.