CN218385477U - Battery pack and electric device - Google Patents

Abstract

The application provides a battery package and power consumption device, battery package include box, electric subassembly and install electrically conductive and casing in the box, and electric subassembly is including the electric element who is used for controlling charge-discharge circuit, and the one end of electrically conductive is connected with the electric quantity output of battery package is electric, and the casing cover covers electric element and covers the one end of electrically conductive and the junction of electric quantity output at least. Like this, this battery package utilizes the casing of the electrical component of shroud to come the junction of shroud electrically conductive piece and electric quantity output end, on the electric safety's of realizing electrically conductive piece basis, need not additionally to set up the protection casing, then the part of battery package does not increase, and then is favorable to avoiding the cost of battery package to rise to can realize the electric safety of battery package with low costs.

Description

Battery pack and electric device

Technical Field

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

Background

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

The battery pack is internally provided with an electrical assembly, and the battery is subjected to high-voltage distribution by configuring the electrical assembly. And a conductive piece is also arranged in the battery pack, and transmits the current of the battery to each electric component of the electric vehicle through the connector by the conductive piece so as to supply power to the electric vehicle. However, how to realize the electrical safety in the battery pack at low cost is a problem to be solved.

SUMMERY OF THE UTILITY MODEL

An object of the present application is to provide a battery pack and a power consumption device that can realize electrical safety in the battery pack at low cost.

An embodiment of a first aspect of the present application provides a battery pack, including: the battery pack comprises a box body, an electrical assembly, a conductive piece and a shell, wherein the conductive piece and the shell are installed in the box body, the electrical assembly comprises an electrical element used for controlling a charging and discharging circuit, one end of the conductive piece is electrically connected with the electric quantity output end of the battery pack, and the shell covers the electrical element and at least covers the joint of one end of the conductive piece and the electric quantity output end.

In the technical scheme of this application embodiment, the one end that electrically conducts and the junction of electric quantity output can be covered by the casing cover to electric connection department exposes, and then is favorable to avoiding the staff to appear electrocuteeing danger when assembling battery module, makes the battery package satisfy the IPXXB protection requirement.

The battery pack of this embodiment utilizes the casing of the electrical component of shroud to come the junction of shroud electrically conductive piece and electric quantity output end, on the electric safety's of realizing electrically conductive piece basis, need not additionally to set up the protection casing, then the part of battery pack does not increase, and then is favorable to avoiding the cost of battery pack to rise to can realize the electric safety of battery pack with low costs.

In some embodiments, the power output end comprises a connector, the connector is provided with a plugging part and a terminal part, and the plugging part is located outside the box body and used for being electrically connected with an external power utilization device; the terminal part is positioned in the box body and is used for being connected with one end of the conductive piece. The battery pack can deliver the current of the battery cell to the external power consumption device depending on the connector.

In some embodiments, the terminal portion is disposed on the first board body of the box body, the terminal portion includes a positive terminal and a negative terminal, the conductive members include a positive conductive member and a negative conductive member, one end of the positive conductive member is electrically connected to the positive terminal, and one end of the negative conductive member is electrically connected to the negative terminal.

In some embodiments, the housing has an opening, and the electrical component is accommodated in the housing through the opening, and the opening faces the first plate body, and one end of the positive conductive member and one end of the negative conductive member extend to the opening. In this embodiment, one end of the conductive member may directly extend to the opening to be connected to the terminal portion.

In some embodiments, the housing has an opening and an avoiding opening, the opening and the avoiding opening are located on different side walls of the housing, the avoiding opening faces the first plate body, and one end of the positive conductive member and one end of the negative conductive member extend to the avoiding opening. During assembly, after the conductive piece is connected with the terminal part, the shell of the embodiment is easier to cover the box body, and the installation is convenient.

In some embodiments, the housing includes a first side wall provided with an avoiding opening, a mounting gap is provided between the first side wall and the first plate, a width of the mounting gap along a center line direction of the avoiding opening is gradually reduced from a top end of the housing to a bottom end of the housing, and the mounting gap can be accommodated by the insulating annular seat of the connector, so as to prevent the insulating annular seat from interfering with the housing. Moreover, since the width of the mounting gap is gradually reduced from the top end of the casing to the bottom end of the casing, in the process of assembling the battery pack, fingers of workers are difficult to extend from the mounting gap to the avoiding opening, and the fingers of the workers are difficult to extend into the casing from the avoiding opening to be in contact with the connecting part of the conductive member and the terminal part, so that the battery pack can meet the IPXXB protection.

In some embodiments, the edge of the avoiding opening is provided with a flange towards the mounting gap, the flange can occupy part of the mounting gap, and the shell can cover a larger area, so that the possibility that the joint of one end of the conductive piece and the connector is exposed out of the mounting gap is further reduced, and the electrical safety of the battery pack is improved.

In some embodiments, a distance between one surface of the flange facing the first plate and the first plate is greater than or equal to 0mm and less than or equal to 12mm. By the design, fingers of workers cannot stretch into the avoidance opening between the flanging and the first plate body, so that the workers are prevented from touching the connection part of the conductive piece and the terminal part, the battery pack can achieve IPXXB protection, and the battery pack has good electrical safety.

In some embodiments, an insulating barrier portion is further protruded from an inner surface of the casing, and the insulating barrier portion is located between the positive conductive member and the negative conductive member, so that the positive conductive member and the negative conductive member are insulated and isolated, and a short circuit phenomenon of the battery caused by contact between the positive conductive member and the negative conductive member is avoided.

In some embodiments, the housing has an opening through which the electrical component passes, and the insulating barrier portion has a connecting end and a free end in a direction parallel to a center line of the opening, the connecting end being connected to an inner surface of the housing, and the free end extending between a connection point of the positive conductive member and the terminal portion and a connection point of the negative conductive member and the terminal portion. With the arrangement, the free end of the insulating barrier part can easily extend into a position between one end of the positive electrode conductive piece and one end of the negative electrode conductive piece.

In some embodiments, the inner surface of the shell is convexly provided with a reinforcing part, and the reinforcing part is connected with the insulating barrier part. Through setting up the rib, the rib separates the fender portion with casing and insulation simultaneously and is connected, then the rib can play the effect that supports insulating fender portion to improve the stability that insulating fender portion was separated.

In some embodiments, the reinforcement portion is a surrounding wall, the surrounding wall surrounds the connection end of the insulation barrier portion, and the extending length of the surrounding wall is smaller than the extending length of the insulation barrier portion along the direction parallel to the center line of the opening. In this embodiment, the surrounding wall can prevent the contact between the connection portion of the terminal portion and the conductive member and the inner surface of the housing, a large space is provided between the connection portion of the terminal portion and the conductive member and the inner surface of the housing, the temperature of the connection portion of the terminal portion and the conductive member is raised due to the passing of current, and the heat at the connection portion can be dissipated into the housing to prevent the connection portion from being overheated.

In some embodiments, the free end of the insulating barrier is tapered, or the free end of the insulating barrier has a tapered surface; and the sectional area of the free end of the insulating barrier part is gradually reduced towards the direction close to the bottom end of the shell. When the shell is manufactured by adopting an injection molding process, the insulating blocking part is easy to separate from the mold, so that the difficulty in manufacturing the shell is reduced.

In some embodiments, the bottom edge of the shell is fixedly connected with the box body, or the battery pack further comprises a covering part, and the bottom edge of the shell is fixedly connected with the covering part. When the bottom edge of the shell is fixedly connected with the covering part, the shell and the covering part form a high-pressure box, and the high-pressure box can be used as an independent part, so that the whole installation and maintenance are facilitated. When the bottom edge of the shell is tightly connected with the box body, the plate body in the box body can serve as a covering part, so that the covering part is omitted, and the number of parts of the battery pack is reduced.

An embodiment of a second aspect of the present application provides an electric device, which includes the battery pack in the above embodiment, and the battery pack is used for providing electric energy.

The above description is only an overview of the technical solutions of the present application, and the present application may be implemented in accordance with the content of the description so as to make the technical means of the present application more clearly understood, and the detailed description of the present application will be given below in order to make the above and other objects, features, and advantages of the present application more clearly understood.

Drawings

In the drawings, like reference numerals refer to the same or similar parts or elements throughout the several views unless otherwise specified. The figures are not necessarily to scale. It is appreciated that these drawings depict only some embodiments in accordance with the disclosure and are not to be considered limiting of its scope.

FIG. 1 is a schematic structural diagram of a vehicle according to some embodiments of the present application;

fig. 2 is an exploded view of a battery pack provided in some embodiments of the present application;

fig. 3 is a schematic diagram of a partial structure of a battery pack provided in some embodiments of the present application;

FIG. 4 is an exploded view of a portion of the structure shown in FIG. 3;

fig. 5 is a schematic diagram of a partial structure of a battery pack according to another embodiment of the present application;

fig. 6 is an exploded schematic view of a portion of the structure of the battery pack shown in fig. 5;

FIG. 7 is a cut-away view of the example shown in FIG. 5;

FIG. 8 is a schematic view of the housing of FIG. 4;

fig. 9 is a sectional view of the battery pack shown in fig. 3;

fig. 10 is a schematic structural view of a high-voltage case in a battery pack according to still another embodiment of the present application;

FIG. 11 is a left side view of the housing shown in FIG. 10;

fig. 12 is a top view of a portion of a battery pack according to still other embodiments of the present application;

FIG. 13 is an enlarged view of a portion of FIG. 12 at A;

FIG. 14 is a bottom view of the housing shown in FIG. 10;

FIG. 15 is a schematic cross-sectional view taken along line B-B of FIG. 13;

FIG. 16 is a partial schematic view of FIG. 12 with the housing omitted;

fig. 17 is a partial structure view of fig. 16 with the case omitted.

Description of reference numerals:

1000-a vehicle;

100-a battery pack;

10-a box body; 11-a first part; 12-a second part; 13-a first plate body; 130-mounting holes; 14-a second plate body;

20-a battery cell;

30-a high-voltage box; 31-a housing; 310-a top plate; 311-peripheral side plate; 3110-first sidewall; 3111-a second sidewall;

3112-third side wall; 3113-a fourth sidewall; 3114-open end face; 312 — avoiding the opening; 313 — a first via;

314-insulating barrier; 315-flanging; 316-enclosure wall; 3160-a substrate; 3161-a first shroud;

3162-a second enclosing plate; 317-connecting plates; 3170 — a second via; 318-installation clearance; 32-a cover portion;

40-positive conductive member; 41-main positive conductive member; 42-positive electrode connecting conductive piece;

50-a negative electrode conductive member; 51-a main negative conductive member; 52-negative pole connecting conductive piece;

60-a connector; 61-positive terminal; 62-negative terminal; 63-an insulating annular seat; 64-a plug-in part;

70-bolt;

200-a controller;

300-motor.

Detailed Description

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are merely used to more clearly illustrate the technical solutions of the present application, and therefore are only examples, and the protection scope of the present application is not limited thereby.

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 "including" and "having," and any variations thereof, in the description and claims of this application and the description of the above figures are intended to cover non-exclusive inclusions.

In the description of the embodiments of the present application, the technical terms "first", "second", and the like are used only for distinguishing different objects, and are not to be construed as indicating or implying relative importance or implicitly indicating the number, specific order, or primary-secondary relationship of the technical features indicated. In the description of the embodiments of the present application, "a plurality" means two or more unless specifically defined otherwise.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase 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. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

In the description of the embodiments of the present application, the term "and/or" is only one kind of association relationship describing an associated object, and means that three relationships may exist, for example, a and/or B, and may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in 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 pieces" refers to two or more (including two).

In the description of the embodiments of the present application, the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate orientations and positional relationships that are based on the orientations and positional relationships shown in the drawings, and are used for convenience in describing the embodiments of the present application and for simplification of the description, but do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus, should not be construed as limiting the embodiments of the present application.

In the description of the embodiments of the present application, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are used in a broad sense, and for example, may be fixedly connected, detachably connected, or integrated; mechanical connection or electrical connection is also possible; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the embodiments of the present application can be understood by those of ordinary skill in the art according to specific situations.

With the popularization of new energy technology in the automobile field, new energy automobiles such as pure electric vehicles and hybrid electric vehicles are more and more widely applied. The power battery is used as a power source of the new energy automobile, and the performance of the power battery is closely related to the endurance mileage and the output power of the new energy automobile. At present, a power battery of a new energy automobile generally has the characteristics of large capacity and high voltage (200V-400V). For safety, the power battery of the new energy automobile is generally provided with a high-voltage box, and the new energy automobile performs high-voltage distribution, voltage monitoring and the like on the power battery by using the high-voltage box. Specifically, the high-voltage box sets up the inside at power battery, the inside electrically conductive piece that is equipped with of high-voltage box, electrically conductive piece includes anodal copper bar and negative pole copper bar, the one end of anodal copper bar is connected with power battery's high voltage connector's positive terminal, the other end of anodal copper bar can be connected with the free anodal of battery among the power battery, the one end of negative pole copper bar is connected with high voltage connector's negative terminal, the other end of negative pole copper bar can be connected with the free negative pole of battery, in order to give high voltage connector with the free electric current transmission of battery, and then transmit the electric current with the new energy automobile that high voltage connector is connected.

Because power battery's voltage is higher, when the equipment battery package, can cause the danger of electrocuteeing if touch the junction of copper bar and high voltage connector, perhaps, if the instrument (for example metal pincers, screwdriver) that are used for the equipment in the assembling process drops to the junction of copper bar and high voltage connector and can take place to strike sparks danger. Meanwhile, the contact of the anode copper bar and the cathode copper bar can cause the short circuit of the power battery, and further the danger of the combustion and even the explosion of the power battery can be caused. Therefore, the high voltage box and the cell to high voltage connector loop need to achieve the IPXXB protection rating. Wherein the IPXXB protection rating refers to preventing or limiting finger contact with hazardous parts.

In the related art, the power battery is further provided with a protective cover, and the protective cover covers the joint of the copper bar and the high-voltage connector so as to prevent a worker or an assembling tool from contacting the joint. And moreover, the protective cover is provided with a partition plate which is positioned between the joint of the positive copper bar and the positive terminal of the high-voltage connector and the joint of the negative copper bar and the negative terminal of the high-voltage connector, so that the battery short circuit caused by the contact of the positive copper bar and the negative copper bar is avoided. However, the applicant finds that when the IPXXB protection level is achieved in this way, the battery pack of the power battery needs to be additionally provided with the protective cover, and the number of parts of the battery pack of the power battery is increased, so that the cost for realizing the electrical safety connection between the conductive component and the high-voltage connector is increased, and the assembly process of the battery pack is multiple and complicated.

In addition, the free electric current of battery transmits for high voltage connector through the copper bar, and the junction of copper bar and high voltage connector rises because of the water conservancy diversion temperature, and the protection casing hugs closely in the copper bar among the correlation technique, and like this, the heat of the junction of copper bar and high voltage connector is difficult for giving off, leads to the junction of copper bar and high voltage connector overheated.

In view of the above problems, the applicant thought to cover the junction of the copper bar and the high voltage connector with existing parts on the power battery, without providing additional parts. Based on this technical idea, finally, the applicant thought to design the housing for covering the electrical assembly so as to also cover the junction of the copper bars with the high-voltage connector.

The battery pack disclosed by the embodiment of the application is not limited to automobiles, and can also be used in electric devices such as ships or aircrafts. A battery pack having the powered device disclosed herein may be used such that the IPXXB protection rating may be achieved at low cost.

The embodiment of the application provides an electric device using a battery pack as a power supply, wherein the electric device can be but is not limited to a mobile 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. The electric toy may include a stationary or mobile electric toy, such as a game machine, an electric car toy, an electric ship toy, an electric airplane toy, and the like, and the spacecraft may include an airplane, a rocket, a space shuttle, a spacecraft, and the like.

For convenience of description, the following embodiments take an example in which a power consuming apparatus according to an embodiment of the present application is a vehicle 1000.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a vehicle 1000 according to some embodiments of the present disclosure. The vehicle 1000 may be a fuel automobile, a gas automobile, or a new energy automobile, and the new energy automobile may be a pure electric automobile, a hybrid electric automobile, or a range-extended automobile, etc. The battery pack 100 is disposed inside the vehicle 1000, and the battery pack 100 may be disposed at the bottom or the head or the tail of the vehicle 1000. The battery pack 100 may be used for power supply of the vehicle 1000, and for example, the battery pack 100 may serve as an operating power source of the vehicle 1000. Vehicle 1000 may also include a controller 200 and a motor 300, where controller 200 may be used to control battery pack 100 to power motor 300, for example, so that vehicle 1000 starts and runs, and controller 200 may also be used to control battery pack 100 to be used for other operational power requirements of vehicle 1000, where the operational power requirements may refer to battery pack 100 providing power for power consuming components of a lighting system or the like of vehicle 1000.

In some embodiments of the present application, the battery pack 100 may be used not only as an operating power source of the vehicle 1000, but also as a driving power source of the vehicle 1000, instead of or in part of fuel or natural gas, to provide driving power for the vehicle 1000.

Referring to fig. 2, fig. 2 is an exploded view of a battery pack 100 according to some embodiments of the present disclosure. The battery pack 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 a receiving space for the battery cells 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 cover each other, and the first portion 11 and the second portion 12 together define a receiving space for receiving the battery cell 20. The second part 12 may be a hollow structure with one open end, the first part 11 may be a plate-shaped structure, and the first part 11 covers the open side of the second part 12, so that the first part 11 and the second part 12 jointly define a containing space; the first portion 11 and the second portion 12 may be both hollow structures with one side open, and the open side of the first portion 11 may cover the open side of the second portion 12. Of course, the case 10 formed by the first and second portions 11 and 12 may have various shapes, such as a cylinder, a rectangular parallelepiped, and the like.

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

Wherein each battery cell 20 may be a secondary battery or a primary battery; but is not limited to, a lithium sulfur battery, a sodium ion battery, or a magnesium ion battery. The battery cell 20 may be cylindrical, flat, rectangular parallelepiped, or other shape.

Fig. 3 is a schematic diagram of a partial structure of a battery pack 100 according to some embodiments of the present disclosure, and fig. 4 is an exploded schematic diagram of the partial structure shown in fig. 3. Referring to fig. 2 to 4, the battery pack 100 provided in the embodiment of the present invention may further include an electrical component (not shown) including electrical elements for controlling a charge and discharge circuit, a conductive member and a case 31 installed in the case 10. One end of the conductive member is electrically connected to the power output terminal of the battery pack 100, the other end of the conductive member is electrically connected to the battery cell 20, and the housing 31 covers the electrical component and at least covers the connection between the one end of the conductive member and the power output terminal.

The battery cell 20, the conductive member and the power output end are sequentially connected to form a charging and discharging circuit, and in order to control the charging and discharging circuit, the electrical component may specifically include a current collecting unit, a battery management unit, a pre-charging resistor, a wire harness, and the like. Since the voltage of the battery cell 20 is 200V to 400V, it is understood that the conductive member may be used to transmit a high voltage signal. Here, the electrical element may further include a relay and/or a fuse provided on a circuit between the battery cell 20 and the conductive member, and the relay and the fuse may be timely opened when the circuit between the battery cell 20 and the conductive member is short-circuited, so as to prevent the battery pack 100 from being burned or even exploded due to the short-circuit. The conductive member may be, for example, a copper bar made of copper, or the conductive member may be made of conductive metal such as silver, gold, or aluminum.

The housing 31 may be mounted in the first portion 11 of the housing 10, or, as shown in FIG. 3, the housing 31 may be mounted in the second portion 12 of the housing 10. The following embodiments are described by taking the case 31 as an example, and those skilled in the art will understand the technical solution when the case 31 is installed in the first portion 11 of the box 10.

The housing 31 is a hollow structure with an opening at one end, and the opening of the housing 31 can be used for passing through the electrical component, so that the electrical component can be accommodated in the housing 31 through the opening to be covered by the housing 31. Therefore, the electrical accident easily caused by the exposure of the high-voltage electrical component can be avoided. That is, the case 31 may be regarded as the high voltage case 30, and the electrical components covered by the case 31 can secondarily distribute the electric power of the battery cells 20.

Moreover, the housing 31 can cover at least the connection between one end of the conductive member and the power output end, so that the connection between the conductive member and the power output end is shielded and not exposed. Of course, in some cases, the housing 31 may cover all of the conductive member. The cross-sectional shape of the housing 31 is not limited to a rectangular shape, and may be a circular shape, a triangular shape, or the like.

With such a configuration, the connection between the conductive member and the power output terminal can be covered by the housing 31, so as to prevent the electrical connection from being exposed, thereby preventing the risk of electric shock when the battery module is assembled by a worker, and allowing the battery pack 100 to satisfy the protection requirement of IPXXB.

Compared with the prior art in which the high-voltage box 30 is arranged to cover the electrical component and the protective cover is additionally arranged to cover the connection between the conductive component and the connector 60, the housing 31 in the embodiment can cover the connection between the conductive component and the power output end and can also cover the electrical component, and thus, the battery pack 100 in the embodiment utilizes the housing 31 covering the electrical component to cover the connection between the conductive component and the power output end, and on the basis of realizing the electrical safety of the conductive component, the protective cover does not need to be additionally arranged, so that the number of parts of the battery pack 100 is not increased, and further, the cost of the battery pack 100 is favorably prevented from rising, and the electrical safety of the battery pack 100 can be realized at low cost. In addition, when the battery pack 100 of the embodiment is assembled, the assembling process of the protective cover can be omitted, so that the assembling process of the battery pack 100 is prevented from being complicated due to the increase of the assembling process of the battery pack 100.

With continued reference to fig. 2 and 4, the power output terminal may include a connector 60, the connector 60 may also be called a connector, the connector 60 is provided with a plug portion 64 and a terminal portion, and the plug portion 64 is located outside the case 10 and is used for electrically connecting with an external power device; the terminal portion is located in the case 10 and is used to connect with one end of the conductive member. By providing the connector 60 with the plug 64 electrically connected to the external electric device, the charging/discharging circuit can be electrically connected to the external electric device, and the battery pack 100 can supply the current of the battery cell 20 to the external electric device depending on the connector 60.

With continued reference to fig. 3 and 4, the case 10 includes a first board 13, the connector 60 is disposed on the first board 13, the terminal portion includes a positive terminal 61 and a negative terminal 62, the conductive member includes a positive conductive member 40 and a negative conductive member 50, one end of the positive conductive member 40 is electrically connected to the positive terminal 61, and one end of the negative conductive member 50 is electrically connected to the negative terminal 62.

In the embodiment where the housing 31 is mounted to the second portion 12 of the case 10, the first panel 13 is not limited to being a side panel of the second portion 12 of the case 10, and may be another panel of the second portion 12 of the case 10. The first plate 13 may be provided with a mounting hole 130, and both the positive terminal 61 and the negative terminal 62 extend into the accommodating space of the case 10 through the mounting hole 130, and the positive terminal 61 and the negative terminal 62 are electrically connected to the positive conductive member 40 and the negative conductive member 50, respectively. Illustratively, the positive terminal 61 and the positive conductive member 40, and the negative terminal 62 and the negative conductive member 50 may be connected by a bolt 70 (see fig. 16 described below) or a rivet, and the bolt 70 or the rivet can be fastened and energized. The insertion part 64 is located outside the receiving space of the case 10 so that an external electric device can be electrically connected to the insertion part 64 with ease.

In this example, the case 31 covers at least a connection between one end of the conductive member and the power output end: the case 31 covers at least the connection between the positive electrode conductor 40 and the positive electrode terminal 61 and the connection between the negative electrode conductor 50 and the negative electrode terminal 62. As shown in fig. 4, an insulating annular seat 63 is disposed around the outer sides of the positive terminal 61 and the negative terminal 62, and the insulating annular seat 63 can protect the positive terminal 61 and the negative terminal 62 from being connected to other electrical components in the case 10 to cause short circuit.

Fig. 5 is a schematic view of a partial structure of a battery pack 100 according to another embodiment of the present disclosure, fig. 6 is an exploded schematic view of the partial structure of the battery pack 100 shown in fig. 5, and fig. 7 is a cross-sectional view of the battery pack 100 shown in fig. 5. In one example, as shown in fig. 7 and 8, the case 31 has an opening through which the electrical components are received in the case 31, and the opening is directed toward the first plate body 13, and one ends of the positive electrode conductive member 40 and the negative electrode conductive member 50 extend to the opening.

By such design, the housing 31 has an open end face 3114 surrounding the opening, the open end face 3114 of the housing 31 is attached to the first board 13, so that the housing 31 covers the first board 13, the positive terminal 61 extends into the housing 31 from the opening to be connected with the positive conductive member 40, and the negative terminal 62 extends into the housing 31 from the opening to be connected with the negative conductive member 50. When the battery pack 100 is assembled, the housing 31 is placed in the case 10 such that the opening of the housing 31 faces the first plate 13, and the housing 31 is moved along the thickness direction of the first plate 13 such that the housing 31 gradually approaches the first plate 13 until the housing 31 covers the connection between the conductive member and the terminal portion of the connector 60.

In this example, the case 31 is further provided with a first through hole 313, and the other end of the positive conductive member 40 and the other end of the negative conductive member 50 extend out of the case 31 through the first through hole 313 and extend into the case 10 to be connected to the positive electrode and the negative electrode of the battery cell 20, respectively. The first through hole 313 may be disposed on a side wall of the casing 31 opposite to the opening, so that the first through hole 313 may be opposite to the opening, and therefore, the positive conductive member 40 and the negative conductive member 50 may extend from the casing 31 into the case 10 without bending.

In another example, as shown in fig. 3, 4, 8 and 9, the housing 31 has an opening and an escape opening 312 communicated with each other, the electrical components are accommodated in the housing 31 through the opening, the opening and the escape opening 312 are located on different side walls of the housing 31, and the escape opening 312 extends to the escape opening 312 toward the first plate 13 and one end of the positive conductive member 40 and the negative conductive member 50. Fig. 8 is a schematic structural view of the case 31 in fig. 4, and fig. 9 is a cross-sectional view of the battery pack 100 shown in fig. 3.

For example, when the second portion 12 of the box 10 is in the shape shown in fig. 3, the second portion 12 of the box 10 further has a second board 14, the second board 14 is adjacent to and perpendicular to the first board 13, the housing 31 has an open end 3114 surrounding the open end, the open end 3114 of the housing 31 is attached to the second board 14, the avoiding opening 312 faces the first board 13, so that the housing 31 covers the second board 14, the positive terminal 61 extends into the housing 31 to be connected to the positive conductive member 40, and the negative terminal 62 extends into the housing 31 to be connected to the negative conductive member 50.

Here, the housing 31 may be understood as including a top plate 310 and a peripheral side plate 311, the peripheral side plate 311 is connected to a peripheral edge of the top plate 310 and is convexly disposed toward one side of the top plate 310, and a side of the peripheral side plate 311 facing away from the top plate 310 is formed as an open end surface 3114. The avoiding opening 312 is disposed at the edge of the peripheral side plate 311 of the housing 31 far from the top plate 310, such that the avoiding opening 312 is communicated with the opening, and the avoiding opening 312 is configured to allow the positive conductive member 40 and the negative conductive member 50 to pass through. Thus, when the battery pack 100 is assembled, the conductive member may be connected to the terminal portion of the connector 60, the housing 31 is then placed in the box 10, the opening of the housing 31 faces the second board 14, the avoiding opening 312 faces the first board 13, the housing 31 is moved along the thickness direction of the second board 14 to gradually approach the second board 14, the conductive member passes through the avoiding opening 312, the connection portion between the conductive member and the terminal portion of the connector 60 enters the housing 31 through the opening, and the housing 31 is continuously moved until the end surface 3114 of the opening is attached to the second board 14. By providing the avoiding opening 312, the housing 31 is covered on the second board 14, so that the conductive member and the housing 31 are prevented from interfering with each other in the process that the connection portion of the conductive member and the terminal portion enters the housing 31.

The first through hole 313 may be provided in the top plate 310 or in the peripheral side plate 311. In the embodiment where the first through hole 313 is disposed on the peripheral side plate 311, the first through hole 313 and the escape opening 312 may be disposed on two opposite side walls of the peripheral side plate 311, respectively, so that the first through hole 313 and the escape opening 312 may be aligned, and thus, the positive conductive member 40 and the negative conductive member 50 may extend from the first through hole 313 to the outside of the case 31 and into the case 10 without being bent.

In view of the above description, it can be understood that the housing 31 shown in fig. 3 and the housing 31 shown in fig. 5 cover different directions in the casing 10.

Comparing the two examples, when the housing 31 is shown in fig. 5, the housing 31 does not need to be additionally provided with the avoiding opening 312, one end of the conductive member can be directly extended to the opening to be connected with the terminal portion, and when the housing 31 is shown in fig. 3, after the conductive member is connected with the terminal portion, the housing 31 is more easily covered on the box body 10, and the installation is convenient.

On the basis of the example shown in fig. 3, when the housing 31 has the opening and the escape opening 312 communicated with each other, and the escape opening 312 faces the first plate body 13, the peripheral side plate 311 may include a first side wall 3110, the escape opening 312 is disposed on the first side wall 3110, a mounting gap 318 is provided between the first side wall 3110 and the first plate body 13, and the width of the mounting gap 318 in the center line direction of the escape opening 312 is gradually reduced from the top end of the housing 31 to the bottom end of the housing 31.

Along the direction of the central line of the opening, the bottom end of the shell 31 is the end of the shell 31 with the opening, and the top end of the shell 31 is the end of the shell 31 far away from the opening. With this configuration, the housing 31 is mounted in the box 10, and the first side wall 3110 of the housing 31 is not completely attached to the first plate 13, but has a mounting gap 318. It should be understood that even if there is a mounting gap 318 between the housing 31 and the first board body 13, the connection point of the conductive member and the terminal portion is not exposed in the mounting gap 318, but is located in the housing 31 and covered by the housing 31.

By designing the mounting gap 318 between the housing 31 and the first plate 13, the mounting gap 318 can be accommodated by the insulating annular seat 63 of the connector 60, so as to prevent the insulating annular seat 63 from interfering with the housing 31. Moreover, since the width of the mounting gap 318 gradually decreases from the top end of the housing 31 to the bottom end of the housing 31, during the process of assembling the battery pack 100, it is difficult for the fingers of the worker to extend from the mounting gap 318 to the opening 312, and then the fingers of the worker are difficult to extend from the opening 312 into the housing 31 to contact the connection point of the conductive member and the terminal portion, so as to facilitate the battery pack 100 to satisfy the IPXXB protection.

Further, the housing 31 may be configured such that the longitudinal sectional area thereof gradually increases from the top end of the housing 31 toward the bottom end of the housing 31. By adopting the design, when the shell 31 is manufactured by adopting an injection molding process, the shell 31 is easily separated from a mold, so that the difficulty in manufacturing the shell 31 is reduced.

Fig. 10 is a schematic structural view of a high-voltage case 30 in a battery pack 100 according to still other embodiments of the present application, and fig. 11 is a left side view of a housing 31 shown in fig. 10. Exemplarily, as shown in fig. 10 and 11, the peripheral side plate 311 is further provided with a second side wall 3111, a third side wall 3112 and a fourth side wall 3113 in addition to the first side wall 3110, the second side wall 3111 is opposite to the first side wall 3110, the third side wall 3112 is opposite to the fourth side wall 3113, the second side wall 3111, the third side wall 3112 and the fourth side wall 3113 are perpendicular to the top plate 310, and the first side wall 3110 is obliquely connected to the top plate 310. Thus, the mounting gap 318 is made to gradually decrease from the top end of the housing 31 to the top end of the housing 31.

Alternatively, in other embodiments, at least one of the second side wall 3111, the third side wall 3112 and the fourth side wall 3113 may be obliquely connected to the top plate 310, so that the variation of the longitudinal cross-sectional area of the shell 31 is larger from the top end of the shell 31 to the top end of the shell 31, further reducing the difficulty of demolding the shell 31.

Fig. 12 is a top view of a part of a battery pack 100 according to still another embodiment of the present disclosure, and fig. 13 is a partially enlarged view of a portion a in fig. 12. Referring to fig. 10, 11, 12 and 13, the edge of the escape opening 312 is formed with a flange 315 toward the mounting gap 318, the flange 315 extending into the mounting gap 318. It is understood that the following possible implementations of the flange 315 exist:

in a first possible implementation, the width of the flange 315 in the direction of the center line of the escape opening 312 is constant from the bottom end of the shell 31 to the top end of the shell 31. In this example, since the first side wall 3110 is obliquely connected to the top plate 310, a surface of the flange 315 facing the first plate 13 is an inclined surface, and a distance between the surface of the flange 315 facing the first plate 13 and the first plate 13 is gradually reduced from a top end of the housing 31 to a bottom end of the housing 31.

In a second possible implementation, as shown in fig. 10 and 11, the width of the flange 315 in the direction of the center line of the escape opening 312 gradually increases from the bottom end of the shell 31 to the top end of the shell 31. In this example, a surface of the flange 315 facing the first plate 13 may be a plane, and a distance between the surface of the flange 315 facing the first plate 13 and the first plate 13 may be equal everywhere.

By designing the flange 315 such that the flange 315 occupies a portion of the mounting gap 318 along the direction of the center line of the escape opening 312, the housing 31 can cover a larger area, thereby further reducing the possibility that the connection between one end of the conductive member and the connector 60 is exposed in the mounting gap 318, and improving the electrical safety of the battery pack 100. Moreover, the difficulty that the worker extends fingers from the mounting gap 318 to the avoiding opening 312 and extends from the avoiding opening 312 to the inside of the shell 31 to contact the connection part of the conductive component and the terminal part is increased, so that the risk of electric shock during the assembly or maintenance process of the battery worker is reduced.

Illustratively, the distance between the surface of the turned edge 315 facing the first plate 13 and the first plate 13 is a spacing distance, and the spacing distance d is greater than or equal to 0mm and less than or equal to 12mm.

As will be understood from the foregoing description, the surface of the flange 315 facing the first plate 13 may be a slant surface or a flat surface. It should be noted that, when one surface of the turned edge 315 facing the first plate 13 is an inclined surface, the spacing distance d refers to a maximum distance between one surface of the turned edge 315 facing the first plate 13 and the first plate 13. When one surface of the turned-over edge 315 facing the first plate 13 is a plane, distances between the one surface of the turned-over edge 315 facing the first plate 13 and the first plate 13 are equal at all places, and are greater than or equal to 0mm and less than or equal to 12mm.

It should be noted that, if the spacing distance d is equal to 0mm, at this time, the flange 315 abuts against the first board 13, so that the fingers of the worker cannot extend into the avoiding opening 312 from the mounting gap 318 to touch the connection between the conductive member and the terminal portion, so that the connection between the connector 60 and one end of the conductive member is protected in an insulating manner. If the spacing distance d is equal to 12mm, it can be understood that the thickness of the human finger is usually 14mm to 21mm, and thus, the distance between the turned-over edge 315 and the first plate 13 is smaller than the thickness of the human finger, so that the worker cannot stretch the finger into the space between the turned-over edge 315 and the first plate 13, and further, the electric shock caused by the fact that the finger touches the connection between the conductive piece and the terminal part during the operation of the worker is avoided. Illustratively, the separation distance d may be equal to 0mm, 5mm, 8mm, 10mm, 12mm.

Due to the design, fingers of workers cannot extend into the avoiding opening 312 from the space between the flanging 315 and the first plate body 13, so that the workers are prevented from touching the connecting part of the conductive piece and the terminal part, the battery pack 100 can meet the IPXXB protection requirement, and the battery pack 100 has good electrical safety.

Referring to fig. 7, 9 and 10, an insulating barrier 314 may also be protrudingly provided on the inner surface of the case 31, the insulating barrier 314 being located between the positive electrode conductive member 40 and the negative electrode conductive member 50 to insulate and isolate the positive electrode conductive member 40 from the negative electrode conductive member 50.

The insulating spacer 314 may be made of Polycarbonate (PC), polypropylene (PP), polyphthalamide (PPA), resin, or other composite materials. The PC, PP, PPA, and other composite materials have good heat resistance, and are beneficial to reduce the possibility that the insulating barrier portion 314 transfers heat between the connection of the one end of the positive conductive member 40 and the positive terminal 61 and the connection of the one end of the negative conductive member 50 and the negative terminal 62.

The material of the case 31 may be the same as the insulating barrier 314, so that the case 31 can also insulate and protect the circuit between the battery cell 20 and the external power device. Wherein, casing 31 and insulating spacer 314 can be the integrative piece of making by integrated into one piece technology, so, on the one hand, has saved the installation process of insulating spacer 314 with casing 31, and on the other hand, under the prerequisite that does not improve the cost, can improve the structural strength and the stability of insulating spacer 314.

By providing the insulating barrier portion 314, the insulating barrier portion 314 can isolate the joint between the positive conductive member 40 and the positive terminal 61 from the joint between the negative conductive member 50 and the negative terminal 62, so that the positive conductive member 40 and the negative conductive member 50 are insulated and isolated, thereby preventing the short circuit phenomenon of the battery caused by the contact between the positive conductive member 40 and the negative conductive member 50.

According to some embodiments of the present application, with continued reference to fig. 7 and 9, the insulating barrier portion 314 has a connecting end connected to the inner surface of the housing 31 and a free end extending between the connection of the positive conductive member 40 and the terminal portion and the connection of the negative conductive member 50 and the terminal portion in a direction parallel to the open center line.

The insulating barrier portion 314 extends in a direction parallel to the center line of the opening of the case 31 regardless of whether the opening is directed toward the first plate 13 or the second plate 14. Thus, when the housing 31 is covered on the first board 13 or the second board 14, the insulating barrier 314 can extend between the positive conductive member 40 and the negative conductive member 50 as the housing 31 moves to cover the connection between the conductive member and the terminal portion.

The insulating barrier 314 is not limited to the plate shape shown in fig. 3, and may have a cylindrical shape, a block shape, or another shape. When the insulating barrier 314 is a plate-shaped barrier, the thickness direction of the barrier may be perpendicular to the center line direction of the opening. With this arrangement, the distance between the positive electrode conductive member 40 and the negative electrode conductive member 50 on both sides of the separator can be made small, thereby improving the utilization of the internal space of the case 31.

With this arrangement, the free end of the insulating barrier portion 314 can easily extend between the one end of the positive electrode conductive member 40 and the one end of the negative electrode conductive member 50.

With continued reference to the figures, the inner surface of the shell 31 may also be provided with a protruding reinforcement that is connected to the insulating barrier 314. Illustratively, the reinforcement portion may be, for example, a rib, which is located between the connection end of the insulating barrier portion 314 and the housing 31.

Since one end of the insulating barrier 314 is a free end, the insulating barrier 314 can be regarded as a cantilever, and the reinforcing portion is connected to the housing 31 and the insulating barrier 314 at the same time by the reinforcing portion, so that the reinforcing portion can support the insulating barrier 314 to improve the stability of the insulating barrier 314.

Fig. 14 is a bottom view of the housing 31 shown in fig. 10, and fig. 15 is a schematic sectional view in the direction B-B of fig. 13. As shown in fig. 10 and fig. 14 and 15, the reinforcement portion may be a surrounding wall 316, the surrounding wall 316 surrounds the connection end of the insulation barrier portion 314, and the length L1 of the surrounding wall 316 is smaller than the length L2 of the insulation barrier portion 314 along the direction parallel to the center line of the opening.

The shape of the wall 316 is not limited, for example, the wall 316 may be circular, square, or other irregular shape. In the example shown in fig. 10, the enclosing wall 316 may specifically include a substrate 3160, a first enclosing plate 3161 and a second enclosing plate 3162, the first enclosing plate 3161 and the second enclosing plate 3162 are respectively located at two sides of the substrate 3160 and are vertically connected to the substrate 3160, and the insulating barrier 314 is connected to the substrate 3160. In this example, the wall 316 is in the form of an open loop. The connection between the first enclosure 3161 and the substrate 3160 is configured as an arc transition, and the connection between the second enclosure 3162 and the substrate 3160 is also configured as an arc transition. Thus, when the housing 31 is manufactured by an injection molding process, the reinforcing part is easily separated from the mold, so that the difficulty in manufacturing the housing 31 is reduced.

Also, the surrounding wall 316 is designed such that an extension L1 thereof in a direction parallel to the center line of the opening is smaller than an extension L2 of the insulating barrier 314. Thus, when the shell 31 covers the connection between the conductive member and the terminal portion, the free end of the insulating barrier portion 314 extends into the space between the positive conductive member 40 and the negative conductive member 50, and since the extension length L1 of the surrounding wall 316 is smaller than the extension length L2 of the insulating barrier portion 314, the end of the surrounding wall 316 close to the first board 13 may abut against the connection between the terminal portion and the conductive member, or, as shown in fig. 15, a certain distance exists between the end of the surrounding wall 316 close to the first board 13 and the connection between the terminal portion and the conductive member.

With such an arrangement, the surrounding wall 316 can prevent the contact between the connection portion of the terminal portion and the conductive component and the inner surface of the housing 31, so that the connection portion of the terminal portion and the conductive component and the inner surface of the housing 31 cannot be attached to each other, a large space exists between the connection portion of the terminal portion and the conductive component and the inner surface of the housing 31, the connection portion of the terminal portion and the conductive component is heated due to the passing of current, and the housing 31 has a sufficient space for dissipating heat at the connection portion, so as to prevent the connection portion from being overheated.

Further, as shown in fig. 10, the free end of the insulating barrier 314 is tapered, or the free end of the insulating barrier 314 has a wedge-shaped surface; the cross-sectional area of the free end of the insulating barrier 314 decreases toward the bottom end of the housing 31.

In this embodiment, when the insulating blocking portion 314 is a cylindrical blocking pillar, the free end of the blocking pillar may be conical or pyramid-shaped, and the cone tip of the free end of the blocking pillar is located at a position of the blocking pillar near the bottom end of the housing 31. When the free end of the blocking column is in a pyramid shape, the free end of the blocking column is provided with a wedge-shaped surface. When the insulating barrier 314 is a partition, the partition may be triangular or trapezoidal, the triangular or trapezoidal partition has a wedge-shaped surface, and the sectional area of the free end of the partition gradually decreases toward the direction close to the opening. Thus, when the housing 31 is manufactured using an injection molding process, the insulating barrier 314 is easily separated from the mold, which helps to reduce the difficulty of manufacturing the housing 31.

Fig. 16 is a partial schematic view of fig. 12 with the case 31 omitted, and fig. 17 is a partial structural schematic view of fig. 16 with the case 10 omitted. Referring to fig. 16 and 17, in some examples, a plurality of connectors 60 may be mounted on the housing 10, and the insertion part 64 of each connector 60 may be connected to different electric components of the external electric device to supply power to the different electric components. For example, the mating part 64 of one connector 60 is connected to the motor of the vehicle 1000, and the mating part 64 of the other connector 60 is connected to the lighting system of the vehicle 1000.

In this example, a plurality of insulating barriers 314 are disposed in the housing 31, and each insulating barrier 314 can correspondingly extend between the connection between the positive terminal 61 and the positive conductive member 40 and the connection between the negative terminal 62 and the negative conductive member 50 of one connector 60. Thus, the positive electrode conductive member 40 and the negative electrode conductive member 50 connected to the same connector 60 are not short-circuited. In the embodiment in which the housing 31 is provided with the escape opening 312, a plurality of escape openings 312 may be provided.

With continued reference to fig. 16 and 17, it will be appreciated that in embodiments where a plurality of connectors 60 are provided on the case 10, in order to enable the positive terminal 61 and the negative terminal 62 of each connector 60 to be connected to the positive conductive member 40 and the negative conductive member 50, respectively, in this embodiment, the positive conductive member 40 may be provided to include a main positive conductive member 41 and a positive connecting conductive member 42, and the negative conductive member 50 may be provided to include a main negative conductive member 51 and a negative connecting conductive member 52.

Positive connecting conductor 42 and negative connecting conductor 52 are both located within housing 31, and are completely covered by housing 31. One end of the positive connecting conductive member 42 is electrically connected to the positive terminals 61 of the plurality of connectors 60, the other end of the positive connecting conductive member 42 is connected to one end of the main positive conductive member 41, and the other end of the main positive conductive member 41 extends out of the housing 31 through the first through hole 313 and into the case 10 to be connected to the positive electrode of the battery cell 20. One end of the negative connecting conductive member 52 is electrically connected to the negative terminals 62 of the plurality of connectors 60, the other end of the negative connecting conductive member 52 is connected to one end of the main negative conductive member 51, and the other end of the main negative conductive member 51 extends out of the case 31 through the first through hole 313 and into the case 10 to be connected to the negative electrode of the battery cell 20.

On the basis of the above embodiment, the bottom end edge of the housing 31 is fastened to the case 10, or the battery pack 100 further includes a cover portion 32, and the bottom end edge of the housing 31 is fastened to the cover portion 32.

In one example, as shown in fig. 3 and 5, the housing 31 may be designed to be directly fastened to the tank 10, and the housing 31 directly covers the inner surface of the tank 10 and encloses a space for accommodating the insulation barrier 314 with the tank 10. In this example, the opening of the housing 31 is sealed by a plate body abutting against the housing 31 on the box body 10.

In another example, as shown in fig. 10, the battery pack 100 may further include a covering portion 32, a bottom end edge of the housing 31 is tightly connected to the covering portion 32, the covering portion 32 and the housing 31 together form a high voltage box 30, and the two together define a space for accommodating the insulating barrier 314. The covering portion 32 is not limited to the plate-like structure shown in fig. 10, and may be a hollow structure with one side open. In the example shown in fig. 10, the covering portion 32 has a plate-like structure, and the covering portion 32 is arranged to close off the open portion.

In the embodiment where the battery pack 100 further includes the covering portion 32, and taking the case 31 with the opening facing the second plate 14 as an example, with reference to fig. 10 and 12, an exemplary installation process of the high voltage box 30 of the battery pack 100 is substantially as follows:

tightly connecting the covering part 32 to the second plate 14 of the case 10, mounting the electrical component on the covering part 32, connecting one end of the positive connecting conductive member 42 to the positive terminal 61 of the connector 60, connecting one end of the negative connecting conductive member 52 to the negative terminal 62 of the connector 60, connecting the other end of the positive connecting conductive member 42 to one end of the main positive conductive member 41, connecting the other end of the negative connecting conductive member 52 to one end of the main negative conductive member 51, and connecting the other ends of the main positive conductive member 41 and the main negative conductive member 51 to the positive electrode and the negative electrode of the battery cell 20, respectively;

placing the casing 31 into the box 10 with the opening aligned with the second board 14, moving the casing 31 in a direction close to the second board 14 with the insulating barrier 314 of the casing 31 facing the space between the end of the positive connecting conductive member 42 and the end of the negative connecting conductive member 52, the positive connecting conductive member 42 and the negative connecting conductive member 52 passing through the opening and avoiding opening 312 until the connection between the conductive member and the terminal part enters the casing 31, and the insulating barrier 314 extending between the end of the positive connecting conductive member 42 and the end of the negative connecting conductive member 52;

the housing 31 is continuously moved in a direction approaching the second plate 14 until the housing 31 contacts the covering portion 32, and the housing 31 is connected to the covering portion 32.

Wherein, the bottom edge of the shell 31 is provided with a connecting plate 317, and the connecting plate 317 is fastened and connected with the box 10 or the covering part 32. Taking the connection between the connection plate 317 and the covering portion 32 as an example, referring to fig. 10, the connection between the connection plate 317 and the covering portion 32 may be a threaded connection, wherein the connection plate 317 is provided with a second through hole 3170, the covering portion 32 is provided with a fixing plate, the fixing plate is provided with a connection threaded hole, and a screw passes through the second through hole 3170 and then is in threaded connection with the connection threaded hole. Of course, the connection manner of the connection plate 317 and the covering part 32 may be replaced by clamping, welding or bonding.

In this way, when the bottom end edge of the case 31 is tightly connected to the case 10, the plate body (e.g., the second plate body 14) in the case 10 may serve as the covering portion 32, eliminating the covering portion 32, resulting in a reduction in parts of the battery pack 100; when the bottom edge of the housing 31 is tightly connected with the covering part 32, the housing 31 and the covering part 32 form the high-voltage box 30, and the high-voltage box 30 can be used as an independent component, so that the whole installation and maintenance are convenient.

In one embodiment, as shown in fig. 10 and 13, the battery pack 100 includes a case 10, an electrical component, and a high voltage box 30 disposed in the case 10, wherein a connector 60 is disposed on the first plate 13 of the case 10, and a positive terminal 61 and a negative terminal 62 of the connector 60 extend into the case 10 and are electrically connected to the positive conductive member 40 and the negative conductive member 50, respectively. High-voltage box 30 includes casing 31 and the portion 32 that closes of lid, casing 31's bottom has the uncovered, the bottom edge of casing 31's first lateral wall 3110 is equipped with dodges opening 312, dodge opening 312 and uncovered intercommunication, the portion 32 that closes of lid is continuous with the fastening of the second plate body 14 of box 10, and the portion 32 that closes of lid still is connected with casing 31's bottom edge fastening, electric assembly sets up on the portion 32 that closes of lid and lies in the space that casing 31 and the portion 32 that closes of lid enclose, and like this, casing 31 can shroud electric assembly. Housing 31 may also cover the junction of one end of positive conductor 40 and positive terminal 61 of connector 60 and the junction of one end of negative conductor 50 and negative terminal 62 of connector 60.

Also, an insulating barrier portion 314 is connected to the inner wall of the casing 31, and when the high voltage box 30 is installed in the case 10, the insulating barrier portion 314 extends between one end of the positive conductive member 40 and one end of the negative conductive member 50, so that the positive conductive member 40 is insulated from the negative conductive member 50.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present disclosure, and the present disclosure should be construed as being covered by the claims and the specification. In particular, the technical features mentioned in the embodiments can be combined in any way as long as there is no structural conflict. The present application is not intended to be limited to the particular embodiments disclosed herein but is to cover all embodiments that may fall within the scope of the appended claims.

Claims (15)

1. A battery pack, comprising:

a box body;

the conductive piece is arranged in the box body, and one end of the conductive piece is electrically connected with the electric quantity output end of the battery pack;

an electrical assembly comprising an electrical element for controlling a charging and discharging circuit;

and the shell is arranged in the box body, and covers the electric element and at least covers the joint of one end of the conductive piece and the electric quantity output end.

2. The battery pack according to claim 1, wherein the power output terminal comprises a connector, the connector is provided with a plug-in portion and a terminal portion, and the plug-in portion is located outside the case and used for being electrically connected with an external power consumption device; the terminal part is positioned in the box body and is used for being connected with one end of the conductive piece.

3. The battery pack according to claim 2,

the terminal part is arranged on the first plate body of the box body and comprises a positive electrode terminal and a negative electrode terminal, the conductive part comprises a positive conductive part and a negative conductive part, one end of the positive conductive part is electrically connected with the positive electrode terminal, and one end of the negative conductive part is electrically connected with the negative electrode terminal.

4. The battery pack of claim 3, wherein the housing has an opening through which the electrical component is received in the housing, the opening facing the first plate, and one end of the positive and negative conductors extending to the opening.

5. The battery pack of claim 3, wherein the housing has an opening and an avoiding opening that are in communication with each other, the electrical component is accommodated in the housing through the opening, the opening and the avoiding opening are located on different side walls of the housing, the avoiding opening faces the first plate, and one end of the positive conductive member and one end of the negative conductive member extend to the avoiding opening.

6. The battery pack according to claim 5, wherein the housing includes a first side wall provided with the bypass opening, a mounting gap is provided between the first side wall and the first plate, and a width of the mounting gap in a direction of a center line of the bypass opening is gradually reduced from a top end of the housing to a bottom end of the housing.

7. The battery pack of claim 6, wherein an edge of the relief opening is formed with a flange toward the mounting gap.

8. The battery pack according to claim 7, wherein a distance between one surface of the flange facing the first plate and the first plate is greater than or equal to 0mm and less than or equal to 12mm.

9. The battery pack according to any one of claims 3 to 8, wherein an insulating barrier is further protruded from an inner surface of the case, and the insulating barrier is located between the positive electrode conductive member and the negative electrode conductive member to insulate and isolate the positive electrode conductive member and the negative electrode conductive member.

10. The battery pack according to claim 9, wherein the case has an opening through which the electrical component passes, and the insulating barrier portion has a connection end connected to an inner surface of the case and a free end extending between a connection point of the positive conductive member and the terminal portion and a connection point of the negative conductive member and the terminal portion in a direction parallel to a center line of the opening.

11. The battery pack according to claim 10, wherein a reinforcing portion is protrudingly provided on an inner surface of the case, and the reinforcing portion is connected to the insulating barrier portion.

12. The battery pack according to claim 11, wherein the reinforcement portion is a surrounding wall surrounding the connection end of the insulation barrier portion and having a length less than that of the insulation barrier portion in a direction parallel to a center line of the opening.

13. The battery pack according to any one of claims 10 to 12, wherein the free end of the insulating barrier has a tapered shape, or the free end of the insulating barrier has a tapered surface;

and the sectional area of the free end of the insulating barrier part is gradually reduced towards the direction close to the bottom end of the shell.

14. The battery pack according to any one of claims 1 to 8, wherein the bottom end edge of the case is fastened to the case, or the battery pack further comprises a lid portion, and the bottom end edge of the case is fastened to the lid portion.

15. An electric consumer, characterized in that the electric consumer comprises a battery pack according to any one of claims 1 to 14 for providing electric energy.

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