CN221041476U - Insulating protective cover of high-capacity battery - Google Patents

Abstract

The utility model belongs to the field of batteries, and particularly relates to an insulating protective cover of a high-capacity battery. The problems that in the gel injection and condensation prevention process of the large-capacity battery, an external gel injection mold is adopted, so that the gel injection process is complex, insulating sealing gel can be possibly damaged in the demolding process, and the reliability of the sealing performance is reduced are solved. Comprises an insulating frame body and an insulating cover plate; the lower end of the insulating frame body is fixed at the top of the high-capacity battery and is used for preventing the insulating sealing glue solution from overflowing the top of the shell; the upper end of the insulating frame body is buckled and provided with the insulating cover plate; and a notch is formed at the upper end of the side wall of the insulating frame body, which is parallel to the xz plane, and the notch is matched with the insulating cover plate to form a slit, so that the high-capacity battery and external equipment are electrically connected through the slit. The insulating frame body of the insulating protective cover is used as the glue injection mold, and demolding is not needed after glue injection is completed.

Description

Insulating protective cover of high-capacity battery

Technical Field

The utility model belongs to the field of batteries, and particularly relates to an insulating protective cover of a high-capacity battery.

Background

In the market, a plurality of single batteries are connected in parallel or in series to form a large-capacity battery (also called a battery module or a battery pack).

However, in the existing large-capacity battery, each single battery has a difference, and due to the existence of the barrel effect, the single battery with the worst performance is often affected, so that the upper limit of the capacity and the cycle number of the whole large-capacity battery are extremely limited. Therefore, how to improve the uniformity of each single battery in the large-capacity battery becomes an important point and a difficult point of research in the field.

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 and 2; a plurality of single batteries 2 are placed in the shell 1 in parallel, and through holes 12 are formed in the top of the shell corresponding to the polar posts of the single batteries 2; the poles of the individual cells 2 are connected to the pole adapter 3 via through-holes 12, and the region of the housing 1 corresponding to the through-holes 12 is fixedly sealed with the housing of the individual cells 2.

As shown in fig. 2, a sealing connector 13 may be added between the through hole 12 and the upper cover plate of the unit cell 2 to realize sealing. The sealing connector 13 comprises a hollow member, the bottom of which is used for sealing connection with the first area of the single battery 2, and the top of which is used for sealing connection with the second area of the shell 1; the first area is an area positioned at the periphery of any pole in the upper cover plate of any single battery 2; the second area is an area corresponding to any one through hole 12 on the housing 1. The area corresponding to the through holes 12 is the peripheral area corresponding to any through hole 12 on the outer surface of the shell 1; or the corresponding region of the through hole 12 is the wall of the through hole 12. The area around the pole is the area around the insulating sealing pad on the pole. The insulating gasket is a part for insulating between the post and the upper cover plate on the unit cell 2. When the dimensions of each unit cell 2 in the group in the z direction are relatively consistent, the housing 1 area corresponding to the through hole 12 can be directly welded with the upper cover plate area around the pole of the unit cell 2 to realize sealing.

The bottom plate of the shell 1 is provided with the electrolyte sharing chamber 4, the electrolyte sharing chamber 4 is communicated with electrolyte areas of the inner cavities of the single batteries 2, the single batteries 2 can be in a unified electrolyte environment through the electrolyte sharing chamber 4, the uniformity of electrolyte in the single batteries 2 is ensured, and the performance and the cycle life of the high-capacity battery are improved.

The top of the shell can be further provided with a gas chamber 9, the gas chamber 9 can be communicated with a gas area of the inner cavity of each single battery 2, so that the gas balance of each single battery 2 is realized, and the performance and the cycle life of the high-capacity battery are further improved. The gas chamber 9 can also be used as an explosion venting channel, when any single battery 2 is in thermal runaway, the thermal runaway smoke in the inner cavity of the single battery 2 enters the gas chamber 9 to break through an explosion venting mechanism arranged at any end of the gas chamber 9, and is discharged.

The high-capacity battery can emit heat in the use process, if heat dissipation is not timely, the service life of the battery is greatly shortened, the energy loss is aggravated, even potential safety hazards such as spontaneous combustion and ignition occur, therefore, in order to improve the heat dissipation efficiency of the high-capacity battery, a liquid cooling pipe can be fixed on the pole adapter 3, and heat dissipation is realized through a primary heat exchange mode.

However, in the long-time use process, due to the temperature difference between the inside and outside of the liquid cooling pipe, condensation is generated on the surface, when the condensation is accumulated to a certain amount, the condensation can infiltrate into the gap between the pole adapter 3 and the top of the housing, when the sealing connector 13 is arranged, the condensation can also infiltrate into the space between the sealing connector 13 and the pole or between the pole adapter 3, so that the pole adapter 3 is electrically connected with the housing 1, and further, the short circuit of the same single battery 2 can be caused.

In order to solve the above problems, the inventors considered that an insulating sealant is laid in the gap between the top of the case and the pole adaptor, and the gap between the pole adaptor 3 and the top of the case is sealed with the insulating sealant, ensuring that condensation cannot enter the gap between the pole adaptor 3 and the top of the case, so that such a high-capacity battery has higher safety.

However, in the process of injecting glue, the insulating sealant is easy to overflow from the top of the shell and flow to the outer wall of the shell 1, and a glue injection mould can be adopted, but after the glue injection is finished, demoulding is needed, and the working procedure is complex; in addition, during the demolding, the structure of the insulating sealant may be damaged, resulting in a decrease in the reliability of the sealing property.

Disclosure of utility model

The utility model aims to provide an insulating protective cover for a high-capacity battery, which solves the problems that in the process of injecting glue and preventing condensation of the high-capacity battery, an external glue injection mold is adopted, so that the glue injection process is complex, insulating sealant can be damaged in the demolding process, and the reliability of the sealing performance is reduced.

The utility model provides an insulating protective cover for a high-capacity battery, which is characterized in that: comprises an insulating frame body and an insulating cover plate;

The lower end of the insulating frame body is fixed at the top of the high-capacity battery and is used for preventing the insulating sealing glue solution from overflowing the top of the shell;

The upper end of the insulating frame body is buckled and provided with the insulating cover plate;

defining the length direction of the insulating frame body as the x direction, the width direction as the y direction and the height direction as the z direction;

And a notch is formed at the upper end of the side wall of the insulating frame body, which is parallel to the xz plane, and the notch is matched with the insulating cover plate to form a slit, so that the high-capacity battery and external equipment are electrically connected through the slit.

The utility model uses the insulating frame body of the insulating protective cover as the glue injection mould, and demoulding is not needed after glue injection is completed, and meanwhile, the bonding strength of the insulating frame body and the top of the high-capacity battery can be improved. Meanwhile, the insulation protection cover is utilized to provide insulation protection for the pole adapter, so that potential safety hazards possibly existing in the operation process of the high-capacity battery due to the fact that the pole adapter is exposed 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 position of the pole adapter is also avoided, and the safety of the high-capacity battery is improved.

Further, the insulating frame body comprises a first insulating frame, glue blocking plates are respectively arranged on two long frames of the first insulating frame along the x direction, the glue blocking plates are parallel to the xz plane, and a third gap is reserved between each glue blocking plate and the outer side face of the adjacent pole adapter piece in the y direction.

Further, in order to improve the strength of the glue blocking plate, the glue blocking plate is provided with a reinforcing rib.

Further, when the high-capacity battery is provided with a gas chamber at the top plate of the housing, the above-mentioned insulating frame body further includes a first chamber as a gas chamber accommodating chamber, i.e., the gas chamber is located in the first chamber.

Further, the insulating frame body comprises a second insulating frame and an insulating bottom plate which is fixed on the second insulating frame and far away from the insulating cover plate, electric connecting column avoiding holes corresponding to all the pole switching pieces are formed in the insulating bottom plate, the aperture of each electric connecting column avoiding hole is larger than the outer contour size of the electric connecting column on the pole switching piece and smaller than the outer contour size of the pole switching piece.

Further, on the insulating bottom plate, a partition plate is arranged around each electric connection column avoiding hole to form a pole adapter accommodating cavity; a fourth gap is formed between the side wall of the pole adapter accommodating cavity parallel to the xz plane and the side surface of the pole adapter parallel to the xz plane.

Further, the outer edge of the electric connection column avoiding hole is provided with a bulge along the circumferential direction of the electric connection column avoiding hole, and the bulge is used as an annular rubber blocking ring, so that the insulation sealing glue solution is prevented from flowing into the space between the sealing connection piece and the electrode column adapter as well as between the single battery electrode columns.

Further, when the high-capacity battery is provided with a gas chamber on the top plate of the housing, the insulating bottom plate is further provided with a second chamber as a gas chamber accommodating chamber, i.e., the gas chamber is located in the second chamber.

Further, a channel for extending the liquid cooling pipe is arranged on the side wall of the insulating frame body, which is parallel to the yz plane.

The beneficial effects of the utility model are as follows:

The utility model uses the insulating frame body of the insulating protective cover as the glue injection mould, and demoulding is not needed after glue injection is completed, and meanwhile, the bonding strength of the insulating frame body and the top of the high-capacity battery can be improved. Meanwhile, the insulation protection cover is utilized to provide insulation protection for the pole adapter, so that potential safety hazards possibly existing in the operation process of the high-capacity battery due to the fact that the pole adapter is exposed 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 position of the pole adapter is also avoided, and the safety of the high-capacity battery is improved.

Drawings

Fig. 1 is a schematic view of a structure of a large-capacity battery in the related art;

fig. 2 is a sectional view of a large-capacity battery according to the related art;

fig. 3 is a schematic view of a structure of a large-capacity battery;

FIG. 4 is a schematic view of a pole adapter;

fig. 5 is a sectional view of a large-capacity battery;

Fig. 6 is a schematic view of another structure of a large-capacity battery;

FIG. 7 is a schematic view of another pole adapter;

fig. 8 is a schematic structural view of a large-capacity battery according to the present utility model;

Fig. 9 is a partial exploded view of the high-capacity battery of the present utility model;

Fig. 10 is a schematic structural diagram of an insulating frame in embodiment 1;

fig. 11 is a schematic view showing a part of the structure of a large-capacity battery in embodiment 1;

fig. 12 is a sectional view of the large-capacity battery in example 1;

Fig. 13 is a schematic view of the structure of a large-capacity battery in embodiment 1;

Fig. 14 is a schematic structural diagram of an insulating frame in embodiment 2;

Fig. 15 is a schematic view showing a partial structure of a large-capacity battery in embodiment 2;

Fig. 16 is a partial sectional view of the large-capacity battery in example 2;

the reference numerals in the drawings are:

1. A housing; 11. a top of the housing; 12. a through hole; 13. sealing the connection member; 14. a liquid-cooled tube; 131. sealing the first surface of the connector; 2. a single battery; 21. a single battery post; 3. a pole adapter; 31. an electrical connection post; 32. a clamping part; 33. the outer side surface of the pole adapter; 35. a pole adapter first face; 36. a pole adapter second face; 4. an electrolyte sharing chamber; 9. a gas chamber; 10. an insulating protective cover; 102. a slit; 104. an insulating frame; 1041. a long frame; 1043. a glue baffle plate; 1044. reinforcing ribs; 105. an insulating cover plate; 106. a baffle; 107. a second insulating frame; 108. an insulating base plate; 1081. an electric connection column avoiding hole; 1082. a partition plate; 109. a pole adapter receiving cavity; 110. an annular rubber blocking ring; 111. an annular groove; 112. a first chamber; 113. a second chamber;

a. a first gap; b. a second gap; c. a third gap; d. a fourth gap; f. and (5) a hollowed-out area.

Detailed Description

So that the manner in which the above recited objects, features and advantages of the present utility model can be understood in detail, a more particular description of the utility model, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the present utility model without making any inventive effort, shall fall within the scope of the present utility model.

In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present utility model, but the present utility model may be practiced in other ways other than those described herein, and persons skilled in the art will readily appreciate that the present utility model is not limited to the specific embodiments disclosed below.

In the description of the present utility model, it should be noted that the azimuth or positional relationship indicated by "top, bottom" or the like in terms are based on the azimuth or positional relationship shown in the drawings, and are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific azimuth, be constructed and operated in a specific azimuth, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first or second, etc. are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The insulating protective cover can be suitable for the high-capacity battery in the background technology, and can also be suitable for the high-capacity battery which faces the same technical problems as the high-capacity battery in the background technology. The following description will take a large-capacity battery as an example in the background art.

As shown in fig. 3 to 7, the large-capacity battery includes a case 1, a plurality of unit batteries 2, and two pole adapters 3. A plurality of single batteries 2 are arranged in parallel in the shell 1; the shell 1 is provided with an electrolyte sharing chamber 4, and the electrolyte sharing chamber 4 is communicated with electrolyte areas in the inner cavities of the single batteries 2.

Referring to fig. 5, through holes 12 are formed in the top 11 of the housing corresponding to the battery cell posts 21; each single battery pole column 21 is connected with the pole column adapter 3 through the through hole 12, and the sealing connecting piece 13 is additionally arranged at the through hole 12, so that the fixed sealing between the shell 1 area corresponding to the through hole 12 and the single battery 2 shell is realized. Wherein the structure and installation position of the sealing connection member 13 are the same as those of the large-capacity battery in the related art.

As shown in fig. 4 and 3, the pole adapter 3 may be one elongated member, and the two elongated members are connected to the positive and negative electrodes of all the unit batteries 2, respectively, as the positive and negative electrodes of the large-capacity battery.

A plurality of electrical connection posts 31 are provided on the elongate member; the electrical connection post 31 is a protrusion protruding from the elongated member. Each of the electrical connection posts 31 is for connection with the positive or negative electrode posts of all the unit cells 2 in the large-capacity battery. Blind holes corresponding to the electric connection columns 31 one by one and extending to the electric connection columns 31 can also be formed on the elongated member. And a conductive column is arranged in each blind hole, and the outer wall of the conductive column is tightly contacted with the inner wall of the blind hole so as to improve the conductive capability of the pole adapter 3.

A clamping portion 32 for mounting the liquid cooled tube 14 is provided on the elongate member. After the high-capacity battery is assembled, the liquid-cooled tube 14 is arranged at the clamping part 32 of the pole adapter 3, and heat concentrated on the pole can be transferred from the pole adapter 3 to the liquid-cooled tube 14 and then brought out. Similarly, when the environmental temperature is too low and the unit batteries 2 may not be started normally, the external temperature control device can also heat each unit battery 2 through the liquid cooling pipe 14.

In order to prevent condensation generated by the liquid cooling tube 14 from penetrating into the first gap between the first face 35 of the pole adapter and the top 11 of the housing or between the first face 35 of the pole adapter and the first surface 131 of the sealing connector, region a shown in fig. 3 and 5, or into the second gap between the electrical connection pole 31 of the pole adapter 3 or the pole 21 of the unit cell and the sealing connector 13, region b shown in fig. 5, the inventor considers that insulating sealant is filled in region a, and in particular, the insulating sealant inevitably flows into region b under the action of gravity during the sealant injection process by directly injecting sealant into region a. In order to reduce the consumption of the insulating sealant, and simultaneously prevent the problem of failure of electrical connection between the electrical connection post 31 and the battery cell post 21 caused by the fact that the insulating sealant enters the part of the electrical connection post 31 and the battery cell post 21 where the electrical connection is in cold joint, under the condition of permission, the insulating partition plate can be only added at the joint position of the area a and the area b, for example, the insulating sealant cannot enter the area b in the process of injecting the sealant into the area a. Of course, the solid insulating material may be filled in the region b, and then the region a may be injected with the insulating sealant, or the insulating sealant may be prevented from flowing into the region b.

As shown in fig. 6, a rectangular block-shaped pole adapter 3 may be used in such a large-capacity battery, and a pole adapter 3 is connected to the positive and negative poles of each unit cell 2.

As shown in fig. 7, an electrical connection post 31 is provided on the rectangular block. The electrical connection posts 31 are protruding portions protruding from the rectangular block. The electric connection post 31 of the post adapter 3 extends into the through hole 12 and is connected with the single battery post 21 positioned in the inner cavity of the shell 1. The injection position of the pole adapter adopting the structure is the same as that of the pole adapter adopting the slender component, and the description is omitted here.

As described in the background art, in order to prevent the insulation sealing glue from overflowing, a glue injection mold may be additionally provided on the top 11 of the housing and around the pole adapter 3 during the glue injection process, so as to ensure that the insulation sealing glue can be smoothly injected into the region a. And after the glue injection is finished, demoulding. However, the process of injecting the adhesive is complicated, in addition, the demolding is difficult, and the structure of the insulating sealant can be damaged in the demolding process, so that the reliability of the sealing performance is reduced.

In order to overcome the problems, as shown in fig. 8, the insulation protection cover 10 is additionally arranged at the top of the high-capacity battery, part of the structure of the insulation protection cover 10 is used as an injection mold, demolding is not needed after the injection is completed, and meanwhile, the bonding strength between the insulation protection cover 10 and the top of the high-capacity battery can be improved. In addition, if the pole adapter 3 is directly exposed to the external environment, there is a great safety hazard in use due to the electrification of the pole adapter 3. Therefore, the insulating protective cover 10 is arranged at the top of the high-capacity battery, insulating protection can be provided for the pole adapter 3, potential safety hazards possibly existing when the pole adapter 3 is exposed in the operation process 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 position of the pole adapter 3 is also avoided, and the safety of the high-capacity battery is improved.

In order to facilitate the implementation of glue injection, as shown in fig. 9, the insulation protection cover 10 is designed to be of a split structure, and the insulation protection cover 10 comprises an insulation frame 104 and an insulation cover plate 105 covering the insulation frame 104; the lower extreme of insulating framework 104 is used for the cooperation of large capacity battery top, is fixed in large capacity battery top through modes such as screw connection or bonding, and insulating cover 105 is installed to the lock of insulating framework 104's upper end, and the breach is seted up to insulating framework 104 and xz plane parallel lateral wall upper end, and this breach cooperates with insulating cover 105 and forms slit 102. A channel for extending the liquid cooling pipe is provided on a side wall of the insulating frame 104 parallel to the yz plane.

The utility model takes part of the structure of the insulating frame 104 as an injecting glue mould to prevent the insulating sealing glue from overflowing the top of the shell.

In the assembly process, generally, the insulating frame 104 may be fixed on the top of the large-capacity battery, then the adhesive is injected into the region a, under the blocking of the insulating frame 104, the insulating sealing adhesive cannot overflow from the top of the housing, after the adhesive layer is cured, the electrical connector is connected with the pole adapter 3, and then the insulating cover plate 105 is fixed on the upper end of the insulating frame 104.

It should be noted that, the electrical connector in the present utility model is a connector for implementing serial connection of two large-capacity batteries; the connection device may be a device for connecting the large-capacity battery to an external load.

The utility model is further described with reference to specific examples;

example 1

As shown in fig. 10, the insulating frame 104 of the present embodiment includes a first insulating frame, two long frames 1041 of the first insulating frame are respectively provided with a glue blocking plate 1043, the glue blocking plate 1043 is parallel to the xz plane, extends along the x direction, and has a third gap (region c shown in fig. 11) between the glue blocking plate 1043 and the outer side 33 of the pole adapter in the y direction. In order to improve the strength of the glue baffle 1043, a reinforcing rib 1044 may be added to the glue baffle 1043.

It should be noted that, the region f shown in fig. 10 is a hollowed-out region, and after the assembly is completed, the pole adapter 3 is located in the region, see fig. 11 and 12.

It should be further noted that, the glue baffle 1043 should form a slit 102 with the insulating cover 105 to connect the power supply connector with the pole adapter 3, as shown in fig. 12 and 13. When the height of the upper end of the glue baffle 1043 is higher than the second surface 36 of the Yu Ji column adaptor, the electric connector with a bending structure can be connected with the pole adaptor, and when the height of the upper end of the glue baffle 1043 is lower than the second surface 36 of the pole adaptor, the electric connector with a flat plate shape can be connected with the electric connector. It should be noted, however, that the height of the injected glue needs to be lower than the pole adapter second face 36 and the upper end face of the glue stop 1043.

In addition, if the top 11 of the housing is not provided with the gas chamber 9, the top 11 of the housing may be provided with an opening corresponding to the explosion venting opening of each unit cell 2, and the peripheral area of the opening may be sealed with the upper cover plate of the unit cell 2. When injecting glue, can set up and keep off glued structure in each battery cell 2 let out and explode mouthful top, prevent that insulating seal glue solution from covering let out and explode mouthful, initiate the incident, after the injecting glue is accomplished, dismantle keep off glued structure can. If the gas chamber 9 is not provided on the top 11 of the case, the top 11 of the case may not be provided with an opening corresponding to the explosion venting port of each unit cell 2, and any port of the electrolyte sharing chamber may be used as the explosion venting port.

In addition, when the top 11 of the housing is provided with the gas chamber 9, the gas chamber 9 can be used as a glue blocking structure. Of course, for structural regularity, as shown in fig. 10 to 12, the insulating frame may further be provided with a first chamber 112 as a gas chamber accommodating chamber, that is, a gas chamber may be located in the first chamber. The side plate parallel to the xz plane of the first chamber can be used as a baffle 106, and the top plate of the first chamber is flush with the insulating cover plate 105, and can be integrally arranged with the insulating cover plate 105.

After the first insulating frame is fixed on the top of the high-capacity battery, glue is injected into a third gap between the first insulating frame and the pole adapter 3, and the insulating sealing glue is filled in the third gap (region c), region a and region b between the first insulating frame and the pole adapter 3.

Example 2

Unlike embodiment 1, this embodiment has an insulating frame 104 of the following structure:

As shown in fig. 14, 15 and 16, the insulating frame 104 of the present embodiment includes a second insulating frame 107 and an insulating bottom plate 108 fixed on the second insulating frame 107 and far away from the insulating cover plate 105, and an electrical connection post avoidance hole 1081 corresponding to each pole adapter 3 is formed on the insulating bottom plate 108, where the size of the electrical connection post avoidance hole 1081 should be capable of making the electrical connection post 31 on the pole adapter 3 pass through, and the main body portion of the pole adapter 3 cannot pass through.

For the rectangular block-shaped pole adapter 3, the partition boards 1082 can be further arranged around the electric connection pole avoiding holes 1081 to form the pole adapter accommodating cavities 109, after the insulating frame 104 is fixed at the top of the high-capacity battery, the electric connection poles 31 of the pole adapter 3 penetrate through the electric connection pole avoiding holes 1081 and the through holes 12 on the top 11 of the shell to be connected with the single battery poles 21, and a fourth gap is formed between the side walls of the pole adapter accommodating cavities 109 parallel to the xz plane and the side surfaces of the pole adapter 3 parallel to the xz plane, so that the area d is shown in fig. 15. And injecting glue into the glue injection space through the fourth gap to realize insulating sealing of the region a and the region b.

For the pole adapter 3 of the elongated member, the accommodating cavity of the pole adapter 3 is a rectangular cavity without arranging a partition 1082, and a space between the pole adapter 3 and the pole adapter accommodating cavity 109 forms a glue injection space.

When the aperture of the electric connection post avoiding hole 1081 is larger than the outer diameter of the electric connection post 31 of the pole adapter 3, the insulating sealant can enter the area b from the gap between the electric connection post 31 of the pole adapter 3 and each single battery pole 21, if a virtual welding exists between the electric connection post 31 and each single battery pole 21, when the insulating sealant enters the area b, the insulating sealant permeates into the virtual welding part, which may affect the conductivity of the pole adapter 3 and each single battery pole 21, in order to avoid such problems, the glue consumption is reduced, and the annular retaining ring 110 can be additionally arranged at the outer edge of the electric connection post avoiding hole 1081, so that the insulating sealant is prevented from flowing into the area b, as shown in fig. 14 and 16. It should be noted that, the outer edge of the electric connection post avoiding hole 1081 may be the wall of the electric connection post avoiding hole 1081, or may be the bottom plate area of the glue injection space around the electric connection post avoiding hole 1081. As can be seen, the annular rubber ring 110 projects perpendicularly to the floor of the pole adapter receiving chamber 109 in the direction of the insulating cover 105. Meanwhile, in order to cooperate with the annular rubber blocking ring 110, an annular groove 111 is formed on the first face 35 of the pole adapter, and the annular rubber blocking ring 110 can be directly inserted into the annular groove 111.

When the housing top 11 is provided with the gas chamber 9, as shown in fig. 14 and 15, the second chamber 113 may be provided on the insulating base plate 108 as a gas chamber accommodating chamber, that is, the gas chamber is located in the second chamber 113.

Claims (9)

1. An insulating protection casing of large capacity battery, its characterized in that: comprises an insulating frame body (104) and an insulating cover plate (105);

The lower end of the insulating frame body (104) is fixed at the top of the high-capacity battery and is used for preventing the insulating sealing glue solution from overflowing the top of the shell;

The upper end of the insulating frame body (104) is buckled and provided with the insulating cover plate (105);

defining the length direction of the insulating frame body (104) as the x direction, the width direction as the y direction and the height direction as the z direction;

A notch is formed at the upper end of the side wall of the insulating frame body (104) parallel to the xz plane, the notch is matched with the insulating cover plate (105) to form a slit (102), and the slit (102) is used for realizing the electric connection between the high-capacity battery and external equipment.

2. The insulating shield for a high capacity battery of claim 1, wherein: the insulating frame body (104) comprises a first insulating frame, glue blocking plates (1043) are respectively arranged on two long frames (1041) of the first insulating frame along the x direction, the glue blocking plates (1043) are parallel to the xz plane, and in the y direction, a third gap is reserved between each glue blocking plate (1043) and the outer side face (33) of the adjacent pole adapter.

3. The insulating shield for a high capacity battery as claimed in claim 2, wherein: and the glue baffle plate (1043) is provided with a reinforcing rib.

4. The insulating shield for a high capacity battery as claimed in claim 2, wherein: the insulating frame further includes a first chamber (112) as a gas chamber accommodating chamber.

5. The insulating shield for a high capacity battery of claim 1, wherein: the insulating frame body (104) comprises a second insulating frame (107) and an insulating bottom plate (108) fixed on the second insulating frame (107) and far away from the insulating cover plate (105), electric connecting column avoiding holes (1081) corresponding to all pole adapter pieces (3) are formed in the insulating bottom plate (108), and the aperture of each electric connecting column avoiding hole (1081) is larger than the outer contour size of each electric connecting column (31) on the pole adapter piece (3) and smaller than the outer contour size of the pole adapter piece (3).

6. The insulating shield for a high capacity battery as recited in claim 5, wherein: the insulation bottom plate (108) is provided with a partition plate (1082) at the periphery of each electric connection column avoiding hole (1081) to form a pole adapter accommodating cavity (109); a fourth gap is formed between the side wall of the pole adapter accommodating cavity (109) parallel to the xz plane and the side surface of the pole adapter (3) parallel to the xz plane.

7. The insulating shield for a high capacity battery as recited in claim 6, wherein: the outer edge of the electric connection column avoiding hole (1081) is provided with a bulge along the circumferential direction of the electric connection column avoiding hole, and the bulge is used as an annular rubber blocking ring (110) to prevent insulating sealing glue liquid from flowing into a space between the sealing connection piece (13), the pole column adapter piece (3) and the single battery pole column (21).

8. The insulating shield for a high capacity battery as recited in claim 5, wherein: the insulating bottom plate (108) is also provided with a second chamber which is used as a gas chamber accommodating cavity.

9. The insulating shield for a high capacity battery of claim 1, wherein: a channel for extending the liquid cooling pipe is arranged on the side wall of the insulating frame body (104) parallel to the yz plane.