CN218123654U - Battery pack and electric equipment - Google Patents

Abstract

The disclosure relates to the technical field of batteries, and discloses a battery pack and electric equipment; the battery pack comprises a conductive bar and a plurality of single batteries; the conductive bar is arranged on the same side of the single batteries and is electrically connected with the single batteries; the conductive bar comprises a second conductive sheet and at least two first conductive sheets, the first conductive sheets comprise a first connecting end and a second connecting end which are connected with each other, the at least two first connecting ends are correspondingly connected with the first electrodes of the at least two single batteries, and the at least two second connecting ends are connected into a whole; the second conducting strips comprise a third connecting end and a fourth connecting end which are connected with each other, the third connecting end is connected with the second connecting ends of the at least two first conducting strips, the fourth connecting end is connected with the second electrode of the single battery, and a safety structure is arranged on the second conducting strips. The battery pack is not easily overheated and thus does not easily pose a safety risk.

Description

Battery pack and electric equipment

Technical Field

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

Background

The new energy electric vehicle is more and more concerned by society and becomes the development direction of future motor vehicles. The battery is an important component in the electric vehicle, and the design optimization of the battery becomes an important project for the development of the electric vehicle.

However, the interior of the battery pack is currently susceptible to safety risks due to overheating.

It is to be noted that the information disclosed in the above background section is only for enhancement of understanding of the background of the present disclosure, and thus may include information that does not constitute prior art known to those of ordinary skill in the art.

SUMMERY OF THE UTILITY MODEL

The present disclosure is directed to overcome the disadvantages of the related art described above that may easily cause a safety risk due to overheating, and to provide a battery pack that may not easily overheat and may not easily cause a safety risk, and an electric device including the battery pack.

According to an aspect of the present disclosure, there is provided a battery pack including:

a plurality of unit cells;

the conductive bar is arranged on the same side of the single batteries and is electrically connected with the single batteries; the conductive bar includes:

the first conductive sheets comprise a first connecting end and a second connecting end which are connected with each other, the at least two first connecting ends are correspondingly connected with the first electrodes of the at least two single batteries, and the at least two second connecting ends are connected into a whole;

the second conducting strip comprises a third connecting end and a fourth connecting end which are connected with each other, the third connecting end is connected with the second connecting ends of at least two first conducting strips, the fourth connecting end is connected with the second electrode of the other single battery, and a safety structure is arranged on the second conducting strip.

This disclosed battery package, parallelly connected two at least monomer batteries through two at least first conducting strips forms a battery unit, establish ties above-mentioned battery unit and another monomer battery through the second conducting strip, parallelly connected can increase the electric current of battery unit, therefore, the electric current on the second conducting strip can increase, the electric current on the second conducting strip is the electric current sum on two at least first conducting strips, thereby make calorific capacity of second conducting strip increase, locate the second conducting strip with insurance structure, insurance structure can fuse under the great temperature rising of calorific capacity of second conducting strip, with the cutoff circuit, and avoid heat transfer to monomer battery, avoid overheated monomer battery to produce the safety risk, avoid influencing other monomer batteries in the battery package, thereby avoid initiating the inside safety risk that produces of battery package.

According to another aspect of the present disclosure, there is provided an electric device including the battery pack described above.

The utility model discloses an electric equipment, connect at least two battery cells in parallel through at least two first conducting strips and form a battery unit, establish ties above-mentioned battery unit and another battery cell through the second conducting strip, parallelly connected can increase battery unit's electric current, therefore, the electric current on the second conducting strip can increase, the electric current on the second conducting strip is the electric current sum on at least two first conducting strips, thereby make the calorific capacity of second conducting strip increase, locate the second conducting strip with insurance structure, insurance structure can fuse under the great temperature rising of second conducting strip calorific capacity, with the circuit cut-off, and avoid heat transfer to battery cell, avoid overheated battery cell to produce the safety risk, avoid influencing other battery cell in the battery package, thereby avoid causing the inside safety risk that produces of battery package, and then avoid electric equipment to take place the safety risk.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure. It should be apparent that the drawings in the following description are merely examples of the disclosure and that other drawings may be derived by those of ordinary skill in the art without inventive effort.

Fig. 1 is a schematic structural diagram of an exemplary embodiment of a battery pack according to the present disclosure.

Fig. 2 is a partial top view of the battery pack of fig. 1 with the protective cover removed.

Fig. 3 is a partial top view of the fixing frame of fig. 2 with the fixing frame removed.

Description of reference numerals:

1. a battery box; 11. a base plate; 12. a protective cover; 13. a side plate;

2. a single battery; 21. a first electrode; 22. a second electrode;

3. a fixed structure; 4. a fixed mount; 5. a dummy structure;

6. a conductive bar; 61. a first conductive sheet; 611. a first connection end; 612. a second connection end; 62. a second conductive sheet; 621. a third connection end; 622. a fourth connection end; 63. a third conductive sheet; 64. a fourth conductive sheet; 65. a fifth conductive sheet; 66. a total conductive sheet; 67. a safety structure; 68. a connecting portion;

7. an electronic component;

81. a first battery row; 82. a second battery row;

x, a first direction; y, second direction.

Detailed Description

Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their detailed description will be omitted. Furthermore, the drawings are merely schematic illustrations of the present disclosure and are not necessarily drawn to scale.

Although relative terms, such as "upper" and "lower," may be used herein to describe one element of an icon relative to another, such terms are used herein for convenience only, e.g., with reference to the orientation of the example illustrated in the drawings. It will be appreciated that if the device of the icon were turned upside down, the element described as "upper" would become the element "lower". When a structure is "on" another structure, it may mean that the structure is integrally formed with the other structure, or that the structure is "directly" disposed on the other structure, or that the structure is "indirectly" disposed on the other structure via another structure.

The terms "a", "an", "the", "said" and "at least one" are used to indicate the presence of one or more elements/components/parts/etc.; the terms "comprising" and "having" are intended to be inclusive and mean that there may be additional elements/components/etc. other than the listed elements/components/etc.; the terms "first," "second," and "third," etc. are used merely as labels, and are not limiting as to the number of their objects.

In this application, unless expressly stated or limited otherwise, the term "coupled" is to be construed broadly, e.g., "coupled" may be a fixed connection or a releasable connection or may be integral; may be directly connected or indirectly connected through an intermediate. "and/or" is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, 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 associated objects are in an "or" relationship.

The disclosed example embodiment provides a battery pack, which, as shown in fig. 1 to 3, may include a conductive bar 6 and a plurality of unit batteries 2; the conductive bar 6 is arranged on the same side of the single batteries 2 and is electrically connected with the single batteries 2; the conductive bar 6 may include a second conductive sheet 62 and at least two first conductive sheets 61, the first conductive sheet 61 may include a first connection end 611 and a second connection end 612 that are connected to each other, the at least two first connection ends 611 are correspondingly connected to the first electrodes 21 of the at least two unit batteries 2, and the at least two second connection ends 612 are connected to form a whole; the second conductive sheet 62 may include a third connection terminal 621 and a fourth connection terminal 622 connected to each other, the third connection terminal 621 is connected to the second connection terminals 612 of the at least two first conductive sheets 61, the fourth connection terminal 622 is connected to the second electrode 22 of the unit cell 2, and the safety structure 67 is disposed on the second conductive sheet 62.

Based on the same inventive concept, the disclosed example embodiments provide an electric device, which may include the battery pack described in any one of the following items.

The electric equipment can be electric vehicles, portable electric appliances, electric tools, large-scale energy storage equipment and various other equipment needing electricity.

This disclosed battery package and consumer, connect at least two battery cells 2 in parallel through at least two first conducting strips 61 and form a battery unit, establish ties above-mentioned battery unit and another battery cell 2 through second conducting strip 62, parallelly connected can increase the electric current of battery unit, therefore, the electric current on second conducting strip 62 can increase, the electric current on second conducting strip 62 is the sum of the electric current on at least two first conducting strips 61, thereby make the calorific capacity of second conducting strip 62 increase, locate second conducting strip 62 with insurance structure 67, insurance structure 67 can fuse under the great temperature rising's of second conducting strip 62 calorific capacity circumstances, with the circuit cut-off, and avoid heat transfer to battery cell 2, avoid overheated battery cell 2 to produce the safety risk, avoid influencing other battery cell 2 in the battery package, thereby avoid causing the inside safety risk that produces of battery package, and then avoid the consumer to take place the safety risk.

Referring to fig. 1, the battery pack may include a battery box 1, the battery box 1 may include a bottom plate 11, a protective cover 12, and four side plates 13, the bottom plate 11 and the protective cover 12 may be rectangular, the four side plates 13 are disposed around the bottom plate 11, the four side plates 13 are connected end to form a rectangular ring, the protective cover 12 is disposed on the other side of the four side plates 13, and the protective cover 12 is disposed opposite to the bottom plate 11. The bottom plate 11, the protective cover 12 and the four side plates 13 surround to form a receiving space.

Of course, in other example embodiments of the present disclosure, the bottom plate 11 and the protective cover 12 may be provided in a circular shape, an oval shape, a trapezoidal shape, etc., and the side plate 13 may be provided in one or more shapes and formed in a circular shape, an oval shape, a trapezoidal shape, etc., so that the battery case 1 is formed in a cylindrical shape, an oval cylindrical shape, a prismatic shape, etc. Other shapes of the battery box 1 can be used, and are not described herein.

A plurality of single batteries 2 are provided in the battery box 1, and second surfaces of the plurality of single batteries 2 may be bonded to the bottom plate 11 of the battery box 1 by an adhesive, thereby fixing the plurality of single batteries 2 in the battery box 1. The fixing method is simple and convenient, and the fixation is firmer.

The unit cell 2 may be a cylinder. The unit battery 2 may include a battery case and a cell. The battery shell can set up to cylindrical, and battery shell can all set up to circular including relative first face and the second face that sets up promptly, first face and second face, are connected with the third face between first face and second face, and the third face sets up to the face of cylinder. A through hole is arranged on the first surface.

In the present exemplary embodiment, a battery cell is provided in the receptacle of the battery housing, and the battery cell is provided as a cylinder adapted to the battery housing. A battery core protective film is arranged outside the battery core, the battery core protective film is set to be cylindrical and matched with the battery core, a battery core supporting plate is arranged at the bottom of the battery core, and the battery core supporting plate and the battery core protective film enable the battery core and a battery shell to be insulated. The battery cell may include a plurality of positive electrode tabs and a plurality of negative electrode tabs.

A battery pole is arranged on one side, close to the first surface, of the battery core, and the plurality of positive plates are connected to the battery pole; the battery pole extends out of the battery shell through the through hole on the first surface to form the positive electrode of the single battery 2. And a plurality of negative electrode tabs are connected to a first face, which forms the negative electrode of the unit cell 2. The positive electrode and the negative electrode of the unit battery 2 thus arranged are drawn from the same side. Of course, the battery post may be the negative electrode of the unit battery 2, and the first surface may be the positive electrode of the unit battery 2. The battery post may be a first electrode 21 of the unit battery 2, and the first face may be a second electrode 22 of the unit battery 2.

Referring to fig. 2 and 3, broken lines in fig. 3 indicate the holder 4 and the electronic component 7. The plurality of single batteries 2 are arranged along a first direction X to form a first battery row 81, and a first gap is arranged between two adjacent single batteries 2 in the first battery row 81; the plurality of single batteries 2 are arranged along the first direction X to form a second battery row 82, and a second gap is formed between two adjacent single batteries 2 in the second battery row 82; the first cell rows 81 are arranged alternately with the second cell rows 82 in the second direction Y, that is, one second cell row 82 is provided between adjacent two first cell rows 81, and one first cell row 81 is provided between adjacent two second cell rows 82. The first direction X intersects the second direction Y, for example, the first direction X is perpendicular to the second direction Y.

Moreover, the single batteries 2 in the second battery row 82 are arranged opposite to the first gap of the first battery row 81, and the single batteries 2 in the first battery row 81 are arranged opposite to the second gap of the second battery row 82; because the single batteries 2 are cylindrical, a containing space similar to a triangular shape is formed between every two adjacent single batteries 2, and the arrangement is such that the single batteries 2 in the adjacent second battery row 82 occupy a part of the containing space, so that the occupancy rate of the space in the battery box 1 is improved, and the energy density of the battery pack is improved.

Six fixing structures 3 are further arranged between the single batteries 2 and are fixedly arranged in a cylindrical shape, and the diameters of the fixing structures 3 are the same as those of the single batteries 2. In order to facilitate the arrangement and fixation of the fixing structure 3 and the plurality of single batteries 2, the fixing structure 3 may be disposed in the first battery row 81, the single batteries 2 cannot be disposed at the position where the fixing structure 3 is disposed, and the fixing structure 3 may replace one single battery 2 because the diameter of the fixing post is the same as that of the single battery 2, but the fixing structure 3 does not need to be electrically connected.

Six fixing structures 3 may be provided in two first battery rows 81, specifically, three fixing structures 3 may be provided in one first battery row 81, and the other three fixing structures 3 may be provided in another first battery row 81, with two-by-two symmetrical arrangement between the six fixing structures 3.

The fixing structure 3 has a first end and a second end opposite to each other, the first end is disposed near the protection cover 12, the first end protrudes from the single battery 2, and the second end is disposed near the bottom plate 11.

A fixing frame 4 is arranged on a side of the fixing structure 3 facing away from the bottom plate 11, and specifically, the fixing frame 4 is connected to a first end of the fixing structure 3. The mount 4 can set up to the platelike of fillet cuboid, and fixed knot constructs 3 and is used for supporting mount 4, consequently, six fixed knot constructs 3's central point and connects and form a rectangle to 4 looks adaptations with the platelike mount of fillet cuboid, make six fixed knot constructs 3 can evenly support mount 4.

Of course, in other exemplary embodiments of the present disclosure, the number of the fixing structures 3 may be set as desired; furthermore, the arrangement of the fixing structures 3 may also be set as required, for example, a plurality of fixing structures 3 may be all disposed in the second cell row 82, or a part of the plurality of fixing structures 3 may be all disposed in the first cell row 81, and another part may be all disposed in the second cell row 82. The shape of the plurality of fixing structures 3 may be formed in an array according to the shape of the fixing frame 4.

The fixing structure 3 is an insulating heat-conducting cylinder, that is, the material of the fixing structure 3 may be an insulating heat-conducting material, an insulating material, or a heat-conducting material. Can be so that insulating between two sets of battery cells 2 of the relative both sides of fixed knot structure 3 through fixed knot structure 3, moreover, can be so that battery cell 2's heat conducts the heat dissipation, and the heat of avoiding battery cell 2 to produce can't transmit away, and leads to overheated production potential safety hazard.

In addition, in some other example embodiments of the present disclosure, the diameter of the fixing structure 3 may be set to be large such that the fixing structure 3 is in contact with both of the unit batteries 2 at opposite sides thereof. Further, the fixed structure 3 may be provided in a prism shape having a rectangular or various polygonal cross section.

Be provided with the through-hole in fixed knot constructs 3, the hoist and mount screw passes through the through-hole on fixed knot constructs 3, can hoist and mount the battery package on consumer.

Since one fixing structure 3 occupies the position of one single battery 2, the number of single batteries 2 in the battery row where the fixing structure 3 is arranged is less than the number of single batteries 2 in the battery row where the fixing structure 3 is not arranged, and the difference between the numbers of single batteries 2 is the number of fixing structures 3 arranged in one battery row. Thereby causing inconsistency in the number of the unit batteries 2 included in each battery row and inconvenience in regular electrical connection between the plurality of unit batteries 2.

Further, as shown in fig. 3, in order to enable regular electrical connection between the plurality of unit batteries 2, the battery pack may further include a dummy structure 5. The dummy structure 5 is arranged in a cylindrical shape, the diameter of the dummy structure 5 is the same as that of the single battery 2, no battery core is arranged in the dummy structure 5, and the dummy structure 5 does not need to be electrically connected.

The dummy structures 5 are located in a different cell row than the fixed structures 3, i.e. the dummy structures 5 are arranged in the first cell row 81 and the second cell row 82 in which no fixed structures 3 are arranged, and the dummy structures 5 are ordered in the first cell row 81 and the second cell row 82 in the same way as the fixed structures 3 are ordered in the first cell row 81 and the second cell row 82, e.g. the fixed structures 3 are arranged in a fourth one of the first cell row 81 and the dummy structures 5 are also arranged in a fourth one of the first cell row 81 and the second cell row 82.

The dummy structure 5 may have a height equal to the height of the battery cell 2 such that the dummy structure 5 may support the conductive bar 6 disposed above it.

The dummy structure 5 is configured as an insulating and/or heat conducting cylindrical shell, i.e. the material of the dummy structure 5 may be an insulating and heat conducting material, or may be an insulating material, or may be a heat conducting material. Can be so that dummy structure 5 is insulating between two sets of battery cells 2 of 5 relative both sides through dummy structure 5, moreover, can be so that battery cell 2's heat conducts the heat dissipation, and the heat of avoiding battery cell 2 to produce can't transmit away, and leads to overheated production potential safety hazard.

In addition, in some other example embodiments of the present disclosure, the diameter of the dummy structure 5 may be set large so that the dummy structure 5 contacts both of the unit cells 2 on opposite sides thereof. The dummy structure 5 may have a rectangular or polygonal cross-section.

As shown in fig. 2 and 3, a conductive bar 6 is provided on a side of the plurality of unit cells 2 facing away from the base plate 11.

The conductive bar 6 may include a total conductive sheet 66, a first conductive sheet 61, a second conductive sheet 62, a third conductive sheet 63, a fourth conductive sheet 64, a fifth conductive sheet 65, and a connection portion 68, and the like, and the total conductive sheet 66 is provided in a rectangular plate shape. One end of six third conducting strips 63 is connected to one long side of the total conducting strip 66, the third conducting strips 63 are long-strip-shaped, and the other ends of the six third conducting strips 63 are connected with battery poles of six single batteries 2, so that the six single batteries 2 are connected to the total conducting strip 66 in parallel to increase the current of the battery pack; one end of the fourth conductive sheet 64 is connected to the cathodes of the six single batteries 2, and the other end of the fourth conductive sheet 64 is connected to the battery posts of the six adjacent single batteries 2; the subsequent unit cells 2 are connected in sequence by the fourth conductive sheet 64.

The connection portions 68 are connected between adjacent fourth conductive plates 64, and the width of the connection portions 68 is smaller than that of the fourth conductive plates 64. Two adjacent columns of the single batteries 2 are connected in series by the connection portion 68 to increase the voltage of the battery pack.

Further, referring to fig. 3, at the position where the dummy structure 5 is disposed, since the dummy structure 5 does not need to be electrically connected, the fifth conductive sheet 65 directly connects the two unit cells 2 that are located in the same cell row as the dummy structure 5 and located at two sides of the dummy structure 5, specifically, one end of the fifth conductive sheet 65 is connected to the cell post of the unit cell 2 at one side of the dummy structure 5, and the other end of the fifth conductive sheet 65 is connected to the negative electrode of the unit cell 2 at the other side of the dummy structure 5; the length of the fifth conductive sheet 65 connecting the two unit cells 2 on both sides of the dummy structure 5 is made longer, so that the resistance of the fifth conductive sheet 65 is larger, and in the present exemplary embodiment, the width of the fifth conductive sheet 65 is set wider, that is, the width of the fifth conductive sheet 65 is larger than the width of the fourth conductive sheet 64, so that the resistance of the fifth conductive sheet 65 is reduced, so that the resistance of the fifth conductive sheet 65 is substantially the same as the resistance of the fourth conductive sheet 64. In addition, since the dummy structures 5 have the same height as the unit cells 2, the dummy structures 5 may serve as a support for the fifth conductive sheet 65.

At the position that sets up fixed knot constructs 3, because fixed knot constructs 3 and need not carry out the electricity and connect, fixed knot constructs 3 first end moreover and needs to be connected with mount 4, consequently, the one end that deviates from bottom plate 11 at fixed knot constructs 3 can not set up and leads electrical drainage 6, leads electrical drainage 6 promptly and need dodge fixed knot structure 3.

The single batteries 2 at two sides of the fixed structure 3 are connected through the two first conductive sheets 61 and the second conductive sheet 62, specifically, the first conductive sheet 61 may include a first connection end 611 and a second connection end 612 that are connected to each other, the two first connection ends 611 are correspondingly connected to the first electrodes 21 of the two single batteries 2, the two single batteries 2 are the single battery 2 at one side of the fixed structure 3 and the single battery 2 at one side of the dummy structure 5, and the two single batteries 2 are located at the same side of the fixed structure 3 and the dummy structure 5; the two second connecting ends 612 are connected into a whole; and the two second connection terminals 612 are located on the side of the dummy structure 5 away from the bottom plate 11, since the height of the dummy structure 5 is the same as that of the single cell 2, the two first conductive sheets 61 can be supported by the dummy structure 5. The two unit cells 2 are connected in parallel by the two first conductive sheets 61.

The second conductive sheet 62 may include a third connection end 621 and a fourth connection end 622 that are connected to each other, the third connection end 621 is connected to the second connection ends 612 of the two first conductive sheets 61, and the third connection end 621 is located on a side of the dummy structure 5 away from the bottom plate 11, and the third connection end 621 may be supported by the dummy structure 5. The fourth connection terminal 622 is connected to the second electrode 22 of another unit cell 2, and the fourth connection terminal 622 is connected to the second electrode 22 of the unit cell 2 on the other side of the dummy structure 5. Two unit cells 2 connected in parallel are connected in series with another unit cell 2 through the second conductive sheet 62.

Since the current increases after the batteries are connected in parallel, the current on the second conductive sheet 62 is the sum of the currents on the two first conductive sheets 61. The current is increased, and the heating value is also increased, so that the second conducting strip 62 has larger heating value, and the safety risk in the battery pack is easily caused; the safety structure 67 is arranged on the second conducting strip 62, and the safety structure 67 can be fused under the condition that the heat generation amount of the second conducting strip 62 is large and the temperature is increased, so that the circuit is cut off, and the internal safety risk of the battery pack is avoided.

The thickness of the securing structure 67 is less than the thickness of the second conductive sheet 62, or the width of the securing structure 67 is less than the minimum width of the second conductive sheet 62. Of course, the thickness of the safety structure 67 may be smaller than the thickness of the second conductive sheet 62, and the width of the safety structure 67 may be smaller than the minimum width of the second conductive sheet 62.

In addition, in the present exemplary embodiment, the second conductive sheet 62 may be connected to the first conductive sheet 61 in the same row thereof to form the fifth conductive sheet 65 described above, and the other first conductive sheet 61 may be connected to one side of the fifth conductive sheet 65.

The number of the single batteries 2 is only an example, and is not a limitation of the present disclosure, and the number of the single batteries 2 may be set according to actual voltage and current requirements.

In the present exemplary embodiment, the fastening frame 4 is arranged on the side of the current conducting bar 6 facing away from the battery cells 2.

In order to improve the utilization ratio of the inner space of the battery pack, a plurality of electronic components 7 are arranged on one side of the fixing frame 4 departing from the single battery 2, the electronic components 7 can comprise a relay and/or a fuse and/or a pre-charging resistor, and the electronic components 7 comprise one, two or more of the relay, the fuse and the pre-charging resistor. However, the electronic component 7 generates more heat, and the heat of the electronic component 7 is transferred to the adjacent single battery 2 and the adjacent conductive bar 6 through the fixing frame 4, which easily causes the internal safety risk of the battery pack caused by overheating of the single battery 2 and the conductive bar 6.

Set up insurance structure 67 to orthographic projection and the orthographic projection of electronic components 7 on the reference plane at least part overlap, the reference plane is parallel with the one side that leads to electrical drainage 6 to be close to electronic components 7, make electronic components 7 generate heat in the course of the work, and with heat transfer to rather than adjacent battery cell 2 with lead electrical drainage 6, and lead to battery cell 2 and lead electrical drainage 6 when overheated, insurance structure 67 on the electrical drainage 6 can fuse when overheated, the circuit breaker, thereby avoid initiating the inside safety risk of battery package.

It should be noted that the above-mentioned "parallel" and "perpendicular" are not completely parallel and perpendicular, but have a certain error; for example, the included angle between the two is greater than or equal to 0 ° and less than or equal to 5 °, i.e., the two are considered to be parallel to each other; the angle between the two is equal to or greater than 85 ° and equal to or less than 95 °, i.e. the two are considered to be perpendicular to each other.

In addition, a recess portion is provided on the protective cover 12, which may be formed by punching from a side of the protective cover 12 close to the unit battery 2, for accommodating the fixing frame 4, the electronic component 7, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

Claims (11)

1. A battery pack, comprising:

a plurality of unit cells;

the conductive bar is arranged on the same side of the single batteries and is electrically connected with the single batteries; the conductive bar includes:

the first conductive sheets comprise a first connecting end and a second connecting end which are connected with each other, the at least two first connecting ends are correspondingly connected with first electrodes of the at least two single batteries, and the at least two second connecting ends are connected into a whole;

the second conducting strip comprises a third connecting end and a fourth connecting end which are connected with each other, the third connecting ends are connected with the second connecting ends of the at least two first conducting strips, the fourth connecting ends are connected with the second electrodes of the single batteries, and safety structures are arranged on the second conducting strip.

2. The battery pack of claim 1, wherein the fuse structure has a thickness less than a thickness of the second conductive sheet and/or a width less than a minimum width of the second conductive sheet.

3. The battery pack of claim 1, further comprising:

the fixing structure is arranged between the single batteries and provided with a first end and a second end which are oppositely arranged;

the fixing frame is connected to the first end of the fixing structure and is positioned on one side, away from the single battery, of the conductive bar;

and the electronic component is arranged on one side of the fixing frame, which deviates from the single battery.

4. The battery pack of claim 3, wherein the first end protrudes from the battery cell.

5. The battery pack of claim 3, wherein an orthographic projection of the fuse structure on a reference plane and an orthographic projection of the electronic component on the reference plane at least partially overlap, the reference plane being parallel to a face of the conductive bar adjacent to the electronic component.

6. The battery pack of claim 3, wherein the securing structure is disposed adjacent to the securing structure.

7. The battery pack of claim 3, further comprising:

the dummy structure is arranged adjacent to the fixed structure and is positioned in different battery rows from the fixed structure.

8. The battery pack of claim 7, wherein the fixed structures are arranged in the same order in the battery row as the dummy structures.

9. A battery pack, according to claim 7, characterized in that said dummy structure is provided as an insulating and/or thermally conducting cylindrical housing, the diameter of said dummy structure being the same as the diameter of said battery cells.

10. The battery pack of claim 3, wherein the securing structure is provided as an insulating and/or thermally conductive cylinder, the securing structure having a diameter that is the same as the diameter of the battery cell.

11. An electric device comprising the battery pack according to any one of claims 1 to 10.

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