CN221041322U - Insulation protective box and high-capacity battery - Google Patents

Abstract

The utility model discloses an insulating protective box and a high-capacity battery, wherein the insulating protective box comprises a box shell, the box shell is arranged at the top of a shell of the high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell; the two first side walls of the box shell are provided with second channels for extending the heat transfer tubes. The use of this case shell can make the utmost point post that exposes wrap up wherein for electrified utmost point post keeps insulating with outside, has avoided the emergence of unsafe incident, has also avoided some foreign matters of external environment to fall into the post position and has led to the problem of high-capacity battery short circuit simultaneously, has then promoted the security and the reliability of high-capacity battery operation in-process greatly.

Description

Insulation protective box and high-capacity battery

Technical Field

The utility model belongs to the field of batteries, and particularly relates to an insulation protection box and a high-capacity battery.

Background

The uniformity of each single battery in the battery module is poor due to the fact that the single batteries in the battery module are different, and the cycle life of the battery module is directly limited, so that the uniformity of each single battery in the battery module is improved, and the focus and difficulty of research in the field are achieved.

In order to solve the above-described problems, the related art proposes a large-capacity battery including a case 1 and a plurality of unit cells 2 as shown in fig. 1; a plurality of unit cells are placed in parallel in the housing 1. The bottom of the shell 1 of the high-capacity battery is provided with a first channel 4 for communicating electrolyte areas of all the single batteries in the shell, so that all the single batteries are in a shared electrolyte system, and uniformity of all the single batteries is improved.

The top of the shell 1 of the high-capacity battery is provided with a first through hole 3 for the single battery pole to extend out of the shell 1 corresponding to the pole of each single battery 2; the part of the pole of each single battery 2 of the high-capacity battery, which extends out of the shell, realizes heat exchange between an external temperature control device and each single battery through at least one heat transfer tube 5, and then realizes temperature control of the high-capacity battery.

Because the pole of each single battery in the high-capacity battery is exposed to the external environment, a great potential safety hazard exists in the use process due to the electrification of the pole.

Disclosure of utility model

In order to solve the problem that the pole of each single battery in the existing high-capacity battery is exposed to the external environment, potential safety hazards possibly exist due to the fact that the pole is electrified in the use process.

The utility model provides an insulating protective box, which comprises a box shell, wherein the box shell is arranged at the top of a shell of a high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell; the two first side walls of the box shell are provided with second channels for extending the heat transfer tubes.

The use of this case shell can make the utmost point post that exposes wrap up wherein for electrified utmost point post keeps insulating with outside, has avoided the emergence of unsafe incident, has also avoided some foreign matters of external environment to fall into the post position and has led to the problem of high-capacity battery short circuit simultaneously, has then promoted the security and the reliability of high-capacity battery operation in-process greatly.

Further, when the plurality of large-capacity batteries form a large-capacity battery cluster, in order to facilitate the electric connector to connect two adjacent large-capacity batteries in series, the two second side walls of the case are respectively provided with a third channel for the electric connector to extend out.

Further, in order to ensure the overall strength of the case and the convenience of installation, the case includes an insulating frame and an insulating cover plate;

The below of insulating framework is used for the cooperation of shell top, and the inside size of insulating framework and the outer fringe size looks adaptation at shell top, the top lock installation insulating apron of insulating framework.

Further, for the convenience of the fixation of the case shell on the shell, the insulating frame body further comprises an insulating bottom plate, the insulating bottom plate is in contact with the outer surface of the top of the shell, a pole avoidance channel is formed in the position of the insulating bottom plate corresponding to each single battery pole, the pole avoidance channel extends towards the direction of the single battery, the pole avoidance channel extends to the design purpose of the single battery to improve the insulating performance of the large-capacity battery, and meanwhile the case shell is positioned at the top of the shell to provide assistance.

Further, when the top of the high-capacity battery shell is provided with a fourth channel for explosion venting or gas balancing, the insulating bottom plate is provided with a concave cavity, and the outer surface of the concave cavity is provided with a positioning groove; the concave cavity is used for avoiding the position of the fourth channel, and the positioning groove can also provide a reliable positioning installation area for an electric signal acquisition and transmission plate used by the large-capacity battery.

Further, the insulation protection case further includes a protection cover provided at one side of any one of the first sidewalls in order to facilitate mounting of the BMS circuit board against the large-capacity battery.

Another aspect of the present utility model provides a high-capacity battery, characterized in that: comprises a shell, a plurality of single batteries, a heat transfer pipe, an electric connecting piece and an insulating protective box;

the bottom of the shell is provided with a first channel;

The plurality of single batteries are arranged in the shell side by side, the pole post of each single battery extends out of the top of the shell, and an electric connecting piece and a heat transfer tube are arranged on the pole posts of the single batteries on the same side; the insulation protection box comprises a box shell, the box shell is arranged at the top of the shell of the high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell; the two first side walls of the box shell are provided with second channels for extending the heat transfer tubes, and the two second side walls of the box shell are provided with third channels for extending the electric connectors; the heat transfer tube protrudes through the second channel.

The box shell which has insulation protection function on the pole part is arranged at the top of the shell of the high-capacity battery, so that the reliability and the safety of the high-capacity battery in the use process are ensured, the second channel is arranged on the box shell, the heat transfer pipe conveniently extends out of the external environment, and the temperature control of the high-capacity battery is completed together with the temperature control device arranged outside; meanwhile, the third channel is convenient for the extension of the electric connecting piece, and a plurality of large-capacity batteries can form a large-capacity battery cluster.

Further, in order to simplify the wiring harness for collecting the electric signals in the large-capacity battery, space is saved, and an electric signal collecting and transmitting plate for collecting and transmitting the signals of each single battery is arranged in the insulating protection cavity.

Further, the above-mentioned high-capacity battery further includes a BMS circuit board; a protective cover is arranged on one side of any first side wall of the case; the BMS circuit board is installed in the safety cover and is electrically connected with the electric signal acquisition and transmission board.

Further, the case includes an insulating frame and an insulating cover plate;

An insulating bottom plate is arranged below the insulating frame body, the inner dimension of the insulating frame body is matched with the outer edge dimension of the top of the shell, and an insulating cover plate is buckled and installed above the insulating frame body;

The insulating bottom plate contacts with the top of the shell, a pole avoidance channel is formed in the insulating bottom plate corresponding to the pole position of each single battery, and the pole avoidance channel extends towards the direction of the single battery.

Further, a fourth channel is formed in the top of the shell, a concave cavity for avoiding the fourth channel is formed in the insulating bottom plate, and the electric signal acquisition and transmission plate is arranged on the concave cavity.

The beneficial effects of the utility model are as follows:

1. According to the utility model, the insulating protective box is arranged at the top of the high-capacity battery shell, so that insulating protection is provided for the part of each single battery pole extending out of the shell, potential safety hazards possibly existing in the process of exposing the pole in the operation of the high-capacity battery are avoided, the problem that the high-capacity battery is short-circuited due to the fact that some foreign matters in the external environment fall into the pole position is also avoided, and the safety of the high-capacity battery is improved.

In addition, because the shell of the high-capacity battery can be coated with the insulating film, and the insulating protective effect of the shell of the insulating protective box on the pole column is achieved, the overall insulating performance of the high-capacity battery is ensured, the high-capacity battery can be independently used as an energy storage element with good insulating performance and large capacity for authentication and use, and the high-capacity battery can also be used by forming a high-capacity battery cluster by using the high-capacity battery, so that the high-capacity battery has the advantages of wide application range, strong market competitiveness and the like.

2. When a plurality of large-capacity batteries form a large-capacity battery cluster, two adjacent large-capacity batteries are connected in series by the electric connector conveniently, and a third channel for extending out of the electric connector is formed on two second side walls of the case.

3. The box shell insulating frame body and the insulating cover plate in the utility model have the advantages that the split structure ensures the strength of the box shell and facilitates the installation of the box shell.

4. The insulating frame body further comprises an insulating bottom plate, a pole avoiding channel is formed in the insulating bottom plate corresponding to the pole position of each single battery, the insulating bottom plate is arranged to facilitate positioning and mounting with the shell, the strength of the box shell is further improved, meanwhile, the design that the pole avoiding channel extends to the single battery can improve the insulating performance of the large-capacity battery, and meanwhile, the box shell is positioned at the top of the shell to provide assistance.

5. The concave cavity is arranged on the insulating bottom plate, so that the high-capacity battery with the fourth channel arranged at the top of the shell can be used, and the positioning groove is also ingeniously arranged on the concave cavity, so that a reliable area is provided for positioning and mounting of the electric signal acquisition and transmission plate, and other parts or areas are not required to be additionally arranged to specially place the electric signal acquisition and transmission plate, so that the high-capacity battery is more compact in structure.

6. According to the utility model, the protective cover for providing installation protection for the installation of the BMS circuit board is further arranged on one side of any first side wall of the case shell, so that the integration of the whole large-capacity battery is stronger, and the structure is more compact.

Drawings

Fig. 1 is a schematic diagram of a first morphological structure of a high-capacity battery according to the related art;

FIG. 2 is a schematic diagram of a high capacity battery according to the present utility model;

FIG. 3 is a schematic view of the structure of the case in form three;

FIG. 4 is a schematic view of the structure of the insulating frame and the insulating base plate;

Fig. 5 is a second schematic structural view of the insulating frame and the insulating base plate;

FIG. 6 is a schematic view of the structure of the high-capacity battery of the present utility model with the insulation protection box removed;

FIG. 7 is a schematic diagram of a high capacity battery according to the present utility model;

FIG. 8 is a schematic view of an electrical connector;

fig. 9 is a schematic view of the structure of the large-capacity battery according to the present utility model with the insulating cover removed.

The reference numerals are as follows:

The device comprises a 1-shell, a 2-single battery, a 3-first through hole, a 4-first channel, a 5-heat transfer tube, a 6-box shell, a 7-second channel, an 8-insulating frame body, a 9-insulating cover plate, a 10-insulating bottom plate, an 11-pole avoidance channel, a 12-hollow component, a 13-third channel, a 14-fourth channel, a 15-concave cavity, a 16-positioning groove, a 17-protective cover, a 18-first cover body, a 19-second cover body, a 20-barrel body, a 21-end plate, a 22-electric connector, a 23-intermediate transition region, a 24-conductive region and a 25-electric signal acquisition and transmission plate.

Detailed Description

The technical solutions of the embodiments will be clearly and completely described below with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art without undue burden, are within the scope of the present utility model based on the following examples.

Meanwhile, it should be noted that the positional or positional relationship indicated by the terms "top, bottom, inner and outer" and the like herein are based on the positional or positional relationship shown in the drawings, and are merely for convenience of description, and are not intended to indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the technical solution. Furthermore, the terms "first, second, or third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The terms "mounted, connected, and coupled" should be construed broadly in this disclosure unless otherwise specifically indicated and defined, such as: can be fixedly connected, detachably connected or integrally connected: it may also be a mechanical connection, an electrical connection, or a direct connection, or may be indirectly connected through an intermediate medium, or may be a communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

The basic design idea of the utility model is as follows:

through set up an insulation protection box at the shell top of large capacity battery, make the pole stretch out the part of shell and received insulation protection box's protection, still realized simultaneously with the insulation of external environment, because this large capacity battery has adopted shell and insulation protection box, consequently each electrified part of whole large capacity battery all keeps keeping apart and insulating with the outside, promoted security and the reliability in the large capacity battery operation process greatly.

Example 1

As shown in fig. 2, the present embodiment provides an insulation protection box, which comprises a box shell 6, wherein the box shell 6 is arranged at the top of a shell 1 of a high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell 6; the casing 6 has second passages 7 for the extension of the heat transfer tubes on both first side walls.

For ease of understanding: the first sidewall is defined as the sidewall parallel to the XZ plane in fig. 2, and the second sidewall is defined as the sidewall parallel to the YZ plane in fig. 2.

The case 6 may take the following form:

Form one: the case 6 has one open end and one closed end, is buckled at the top of the case 1 through the open end, and is fixed at the top of the case 1 through modes such as screw connection or bonding, wherein the second channel 7 is a notch arranged on the first side wall of the case 6, and the opening direction of the notch is consistent with the opening direction of the open end of the case 6.

Form two: referring to fig. 3, the case 6 includes an insulating frame 8 and an insulating cover 9; the below of insulating framework 8 is used for the cooperation of shell 1 top, and the inside size of insulating framework 8 and the outer fringe size looks adaptation at shell 1 top (the inside size of insulating framework 8 is slightly greater than the outer fringe size at shell 1 top), insulating apron 9 is installed to the top lock of insulating framework 8, and insulating framework 8 is fixed in the shell top through modes such as screw connection or bonding, and wherein, second passageway 7 is the breach that insulating framework set up on first lateral wall.

Form three: as shown in fig. 3 to 5, the third and second forms are basically similar in structure, except that an insulating bottom plate 10 is arranged on the insulating frame 8, and meanwhile, the second channel 7 is a round hole with a diameter slightly larger than that of the heat transfer tube, which is formed by up-down matching of the insulating frame 8 and the insulating cover plate 9, and compared with the second channel 7, the round hole is provided with a notch as the second channel, so that the sealing performance of the box shell is stronger, and the appearance is more attractive. Wherein the insulating base plate 10 is in direct contact with the top outer surface of the housing, on which the pole relief channel 11 is provided. The arrangement of the insulating bottom plate 10 not only makes the case 6 easier to install and position at the top of the shell 1, but also increases the rigidity of the insulating frame 8, and the insulating frame 8 is not easy to deform and is more convenient to install, so that the case 6 structure of the third form is selected in the embodiment.

In addition, the problem that the gap between the high-capacity battery shell and the upper cover plate of each single battery is too large due to machining errors and assembly errors, and therefore the problem that the two are in cold joint or cannot be welded when the two are welded through laser welding is solved.

As shown in fig. 1, the conventional large-capacity battery employs a hollow member to solve the problem; specifically, the bottom of the hollow member 12 is welded to be sealed with the first region of the unit cell, and the top of the hollow member 12 is welded to be sealed with the second region of the housing 1; the first area is an area positioned at the periphery of any pole in the upper cover plate of any single battery; the second area is an area corresponding to any one of the first through holes 3 on the shell 1. The area corresponding to the first through holes 3 is the peripheral area corresponding to any one of the first through holes on the outer surface of the shell; or the corresponding area of the first through hole 3 is the wall of the first through hole 3.

The hollow member 12 is generally a thin walled, tubular-like structure, which may be rectangular or circular in horizontal cross-section, and is generally circular in cross-section for better fit with the first through-hole and the pole shape. In order to secure insulation between the hollow member 12 and the pole, a conventional large-capacity battery employs a potting insulation paste or an additional insulation sheath to secure insulation between the hollow member 12 and the pole.

However, in the conventional large-capacity battery, the insulating glue is poured or the insulating sleeve is provided to maintain the insulativity between the hollow member 12 and the pole, so in this embodiment, as shown in fig. 5 and 6, the pole avoiding channel 11 may extend toward the direction of the single battery, thereby realizing insulation between the pole and the hollow member 12, that is, the insulating arrangement of the pole and the hollow member 12 is completed while the insulating protective box is installed, and compared with the conventional method, the assembly process is simpler.

In order to facilitate the processing of the parts, the insulating frame 8 and the insulating bottom plate 10 are integrally processed and formed, and the insulating frame 8, the insulating cover plate 9 and the insulating bottom plate 10 are made of plastic materials with higher insulating performance.

In this embodiment, the insulation protection box may further have the following optimized structural design:

1. As shown in fig. 3, in order to facilitate the connection of a plurality of large-capacity batteries using an insulation protection box in series to form a large-capacity battery cluster, in this embodiment, a third channel 13 for extending an electrical connector out of the box is provided on a second side wall of the box shell 6, and the configuration mode of the third channel 13 is the same as that of the second channel 7, which is not described herein.

2. As shown in fig. 5 and 6, in order to be suitable for a high-capacity battery with a fourth channel 14 on the top of the casing 1, in this embodiment, a cavity 15 for avoiding the fourth channel is provided on the insulating base plate 10, the cavity 15 is provided on the insulating base plate 10 in an integrally formed manner, and a positioning slot 16 for installing an electric signal collecting and transmitting plate is further provided on the outer surface of the cavity 15.

3. As shown in fig. 7, in order to facilitate mounting of the BMS circuit board on the high-capacity battery, the integration of the high-capacity battery is higher, the insulation protection box in this embodiment further includes a protection cover 17 disposed on one side of any first sidewall of the box housing 6, the protection cover 17 provides a mounting space for the BMS circuit board, and meanwhile, a connection terminal for connecting the electrical signal collection and transmission board with the BMS circuit board may be located inside the protection cover 17. Specifically, in order to facilitate the processing and installation of the protection cover, a part of the protection cover 17 in this embodiment is a first cover 18 integrally formed on the insulating frame 8, and a second cover 19 fixed on the side wall of the housing 1, where the first cover 18 and the second cover 19 are fixedly spliced to form the protection cover. The first cover 18 is mainly used for protecting the connection terminals of the electric signal acquisition and transmission board and the BMS circuit board, and the second cover 19 is mainly used for protecting the BMS circuit board.

Example 2

In this embodiment, as shown in fig. 7 to 9, there is provided a large-capacity battery including a case 1, N single cells 2, 2N hollow members 12, a heat transfer pipe 5, an electric connection member, and an insulating protection case as described in embodiment 1, N being 2 or more (N has a value of 10 in this embodiment); the 10 single batteries 2 are arranged in parallel and integrally arranged in the shell 1;

The part of the pole of each single battery 2 extending out of the shell 1 transfers the heat of each single battery 2 to an external temperature control device through at least one heat transfer pipe 5 to cool the single battery 2, or transfers the heat of the external temperature control device to each single battery 2 through the heat transfer pipe 5 to heat the single battery;

The bottom of the housing 1 is provided with a first channel 4 communicating with the electrolyte area of each unit cell 2.

The following details of the structure, function and connection relationship between the components of the large-capacity battery in this embodiment:

1. Outer casing

The structure of the casing 1 in this embodiment must ensure that it remains airtight to the external environment after the formation of the shared electrolyte system, and it may take the following forms:

First, the housing 1 includes a cylinder, an upper cover plate, and a lower cover plate; the lower cover plate is provided with a first channel, and the upper cover plate is provided with a plurality of first through holes for extending out of the polar posts; the upper cover plate and the lower cover plate are welded and fixed with the cylinder body in a welding mode.

Second, the outer casing 1 comprises a U-shaped shell, an upper cover plate, a front cover plate and a rear cover plate; the U-shaped shell is formed by welding, stamping and the like, a first channel is arranged at the bottom of the U-shaped shell, and a plurality of first through holes for extending the pole are formed in the upper cover plate; the upper cover plate, the front cover plate and the rear cover plate are welded and fixed with the U-shaped shell in a welding mode.

Third, as shown in fig. 7 and 9, the housing 1 includes a cylinder 20, two end plates 21 (front end plate and rear end plate); both end plates 21 are fixedly sealed at both ends of the cylinder 20 by welding; the bottom of the cylinder 20 is integrally formed with a first channel 4; the top of the cylinder 20 is provided with a plurality of first through holes 3 for the pole to protrude.

In addition, in this embodiment, a fourth channel 14 may be disposed on the top of the housing 1, where the fourth channel 14 may be used to communicate with the gas area of each unit cell, so that each unit cell is in a gas balanced system;

or the fourth channel 14 covers the explosion venting membrane of the upper cover plate of the single battery 2, and when the single battery is in thermal runaway, the thermal runaway smoke breaks the explosion venting membrane and can be discharged through the fourth channel 14.

2. Single battery

The single battery 2 is a lithium ion battery similar to a commercially available aluminum square shell, and comprises a battery shell, a pole post and an electrode assembly; the electrode assembly is positioned in the battery shell, the pole column is positioned at the top of the battery shell and is electrically connected with the electrode assembly, and the battery shell is internally provided with an electrolyte area and a gas area;

The top and/or the bottom of the battery shell are/is provided with a sealing film; the sealing film provided on top of the battery case has two different forms:

The sealing film can be opened under the action of electrolyte or external force so as to form an opening at the top of the battery shell, and then the gas area communication of each single battery can be realized through the fourth channel when the high-capacity battery is formed. The form of this sealing film can be found in particular in patent CN218525645U; the thermal runaway vent can also be a common explosion venting film and is used for discharging thermal runaway flue gas through a fourth channel when thermal runaway occurs.

There is only one form of sealing film at the bottom of the cell housing: the electrolyte can be opened under the action of electrolyte or under the action of external force, and then the electrolyte areas of the single batteries can be communicated through the first channel when the high-capacity battery is formed. The form of this sealing mechanism can be found in particular in patent CN218525645U.

3. Hollow member

Referring to fig. 6, since the post of the unit cell 2 needs to protrude from the top of the case 1, the present embodiment employs the hollow member 12 to secure the sealability of the case, specifically: the bottom of the hollow member 12 is welded with the upper cover plate of the single battery 2, and the top of the hollow member 12 is welded with the shell 1; the poles of the unit batteries 2 protrude from the hollow member 12, and insulation between the poles and the hollow member 12 is required.

In this embodiment, be provided with the utmost point post of orientation battery cell 2 upper cover plate extension on the insulating bottom plate 10 of case and dodge passageway 11, this utmost point post dodges passageway 11 and can regard as the insulating piece between cavity component 12 and the utmost point post to use, and this utmost point post dodges passageway 11 has replaced current large capacity battery and has adopted the scheme of pouring insulating glue or setting up insulating cover mode and ensure the insulation between cavity component 12 and the utmost point post, has saved the process of large capacity battery preparation.

4. Heat transfer tube

The heat transfer pipe 5 may be a cored pipe or an aluminum pipe filled with a heat exchange medium, and when the aluminum pipe is used, a liquid medium such as insulating oil may be used as the heat exchange medium in order to avoid the problem of the heat exchange medium leaking and affecting the large-capacity battery.

In this embodiment, the heat transfer tube 5 and the pole are fixed by a clamping groove arranged on the pole, so that the heat transfer tube is convenient to install and detach.

5. Electric connector

The number of the electric connecting pieces 22 is two, and the electric connecting pieces are respectively connected with the pole posts of the single batteries on the same side, so that the parallel connection of the single batteries is realized; when a plurality of large-capacity batteries form a large-capacity battery cluster, the electric connector 22 can be used for realizing the serial connection of the large-capacity batteries. In this embodiment, as shown in fig. 8, the electrical connector 22 is formed by stamping a single sheet, or by laminating a plurality of sheets. The preferred material can be aluminum sheet metal, and specifically comprises a middle transition region 23 and conductive regions 24 arranged at two sides of the middle transition region 23; the one side conductive area 24 is used for connecting with the positive poles of all the single batteries on one large-capacity battery, and correspondingly, the other side conductive area 24 is used for connecting with the negative poles of all the single batteries on the other large-capacity battery.

In order to ensure that when the large-capacity batteries are connected in series, the conductive area of the electrical connector is partially exposed in the external environment, which may cause a problem of short circuit, so that the exposed portion of the conductive area may be optionally covered with an insulating film in this embodiment.

6. Electric signal acquisition and transmission structure and BMS circuit board

As shown in fig. 9, in addition to this, the large-capacity battery of the present embodiment is further provided with an electrical signal collecting and transmitting board 25 for receiving signals such as temperature and pressure of each unit battery 2, and in order to reasonably use the space of the large-capacity battery, the electrical signal collecting and transmitting board 25 is directly installed on the outer surface of the concave cavity 15 of the insulating base plate 10 in the present embodiment.

In this embodiment, a BMS circuit board is configured to the high-capacity battery, and this BMS circuit board is placed in the protection cover 17, and the binding post that is connected between BMS circuit board and the electric signal acquisition transmission board also is located in this protection cover for this high-capacity battery's electricity transmission is more reliable.

Claims (11)

1. An insulating protective box for a high-capacity battery is characterized by comprising a box shell, wherein the box shell is arranged at the top of a shell of the high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell; the two first side walls of the box shell are provided with second channels for extending the heat transfer tubes.

2. The insulated protective housing of claim 1, wherein the housing has a third channel on both second sidewalls for extension of the electrical connector.

3. The insulation protection box according to claim 2, wherein the box shell comprises an insulation frame body and an insulation cover plate; the below of insulating framework is used for the cooperation of shell top, and the inside size of insulating framework and the outer fringe size looks adaptation at shell top, the top lock installation insulating apron of insulating framework.

4. The insulation protection box according to claim 3, wherein the insulation frame body further comprises an insulation bottom plate, the insulation bottom plate is in contact with the outer surface of the top of the shell, a pole avoidance channel is formed in the insulation bottom plate corresponding to the pole position of each single battery, and the pole avoidance channel extends towards the direction of the single battery.

5. The insulation protection box according to claim 4, wherein a concave cavity is formed in the insulation base plate, and a positioning groove is formed in the outer surface of the concave cavity.

6. The insulated protective housing according to any one of claims 1 to 5, further comprising a protective cover provided on one side of any one of the first sidewalls.

7. A high capacity battery characterized by: comprises a shell, a plurality of single batteries, a heat transfer tube and an insulating protective box;

the bottom of the shell is provided with a first channel;

The plurality of single batteries are arranged in the shell side by side, the pole post of each single battery extends out of the top of the shell, and an electric connecting piece and a heat transfer tube are arranged on the pole posts of the single batteries on the same side;

The insulation protection box comprises a box shell, the box shell is arranged at the top of the shell of the high-capacity battery, and the part of each single battery pole extending out of the shell is positioned in the box shell; the two first side walls of the box shell are provided with second channels for extending the heat transfer tubes, and the two second side walls of the box shell are provided with third channels for extending the electric connectors;

The heat transfer tube protrudes through the second channel.

8. The high-capacity battery as claimed in claim 7, wherein: an electric signal acquisition and transmission plate used for acquiring and transmitting signals of each single battery is arranged in the insulation protection cavity.

9. The high-capacity battery as claimed in claim 8, wherein: the BMS circuit board is also included; a protective cover is arranged on one side of any first side wall of the case; the BMS circuit board is installed in the safety cover and is electrically connected with the electric signal acquisition and transmission board.

10. The large-capacity battery according to claim 8 or 9, wherein,

The box shell comprises an insulating frame body, an insulating bottom plate and an insulating cover plate;

An insulating bottom plate is arranged below the insulating frame body, the inner dimension of the insulating frame body is matched with the outer edge dimension of the top of the shell, and an insulating cover plate is buckled and installed above the insulating frame body;

The insulating bottom plate contacts with the top of the shell, a pole avoidance channel is formed in the insulating bottom plate corresponding to the pole position of each single battery, and the pole avoidance channel extends towards the direction of the single battery.

11. The high-capacity battery as claimed in claim 10, wherein the housing top is provided with a fourth channel, the insulating base plate is provided with a cavity for avoiding the fourth channel, and the electric signal collection and transmission plate is arranged on the cavity.