CN220400751U - Battery module and energy storage power supply - Google Patents

Abstract

The utility model discloses a battery module and an energy storage power supply. The battery module comprises two brackets, a plurality of electric cores, a thermal insulation sleeve and a fixing part, wherein the two brackets are fixedly connected with each other, each bracket comprises a containing part, the containing part is provided with a plurality of containing cavities, each containing part comprises a clamping surface, and the containing cavity is provided with an opening on the clamping surface; each cell comprises a first end part, a connecting part and a second end part, wherein the connecting part is connected with the first end part and the second end part, the first end part is arranged in one accommodating cavity through an opening, and the second end part is arranged in the other accommodating cavity through the opening; the heat-insulating sleeve is sleeved on the connecting part; the fixing part is arranged on at least one of the two clamping surfaces of the two brackets, and the heat insulation sleeve is fixed between the two accommodating parts of the two brackets by the fixing part. In the battery module, the fixing part can fix the thermal insulation sleeve to limit the rotation and vibration impact of the thermal insulation sleeve, so that the damage of the rotation and vibration impact to the thermal insulation sleeve is reduced, and the structural stability and consistency of the thermal insulation sleeve are maintained.

Description

Battery module and energy storage power supply

Technical Field

The utility model relates to the technical field of energy storage, in particular to a battery module and an energy storage power supply.

Background

Currently, along with popularization of clean energy, more houses are provided with solar panels, and electric quantity generated by the solar panels can be stored in energy storage products. Energy storage products, particularly households, are required to meet certain heat spreading requirements, and therefore, a thermal insulation sleeve is sleeved on each cell of the battery module to meet the heat spreading requirements.

However, in a battery module, the manufacturing tolerance of the sleeve is limited, and the heat insulation sleeve partially sleeved on the battery cell can rotate and is jumped by shock in a small range, so that the stability and consistency of the physical properties of the heat insulation sleeve are ensured, the heat insulation sleeve is extremely disadvantageous, and the consistency of the prevention and control effects of heat spreading is also influenced.

Disclosure of Invention

The utility model provides a battery module and an energy storage power supply, which can solve at least one technical problem.

The battery module provided by the embodiment of the utility model comprises:

the device comprises two brackets, wherein the two brackets are fixedly connected with each other, each bracket comprises a containing part, the containing part is provided with a plurality of containing cavities, each containing part comprises a clamping surface, and the containing cavities are provided with openings on the clamping surfaces;

each cell comprises a first end part, a connecting part and a second end part, wherein the connecting part is connected with the first end part and the second end part, the first end part is arranged in the accommodating cavity of one bracket through the opening, and the second end part is arranged in the accommodating cavity of the other bracket through the opening;

the thermal insulation sleeve is sleeved on the connecting part;

and the fixing part is arranged on at least one of the two clamping surfaces of the two brackets, and fixes the thermal insulation sleeve between the two accommodating parts of the two brackets.

Among the above-mentioned battery module, the fixed part is fixed thermal-insulated sleeve between two accommodation parts of two supports, can fix thermal-insulated sleeve, and restriction thermal-insulated sleeve's rotation and vibrations are strikeed, will rotate and vibrations strike thermal-insulated sleeve's damage and reduce to the minimum, and furthest keeps thermal-insulated sleeve's structural stability and uniformity.

In some embodiments, the fixing portion is provided on two clamping surfaces of the two brackets. In this way, the fixing effect on the thermal sleeve can be enhanced.

In some embodiments, the fixing portions on the two brackets are disposed opposite to each other along the length direction of the battery cell. Thus, the safety and the effectiveness of the thermal insulation sleeve can be ensured.

In some embodiments, the securing portion includes a plurality of projections, a plurality of the projections disposed about the opening in an interference fit with the thermal sleeve. In this way, the thermal sleeve may be made smoother.

In some embodiments, the accommodating part comprises a plurality of accommodating parts, each accommodating part is provided with one accommodating cavity, two adjacent accommodating parts are connected to form a connecting place, and the protruding block is positioned at the connecting place. In this way, the fixing effect on the thermal sleeve can be enhanced.

In some embodiments, the support comprises a frame, the accommodating part is located in the frame and is fixedly connected with the frame, fixing components are arranged on the side edges of the frame, and the two supports are mutually and fixedly connected through the fixing components. In this way, the fixation of the bracket is facilitated.

In some embodiments, the fixing assembly comprises a fixing piece and a fastening piece, wherein the fixing piece is arranged on the side edge of the frame, the fixing piece is provided with a fixing hole, and the fastening piece penetrates through the fixing hole and locks the two brackets. In this way, the fixing operation can be simplified.

In some embodiments, an abutment member is disposed on the inner wall of the accommodating cavity, and the abutment member abuts against the battery cell. Thus, the fixing of the battery cell is facilitated.

In some embodiments, the bottom wall of the accommodating cavity is provided with a through hole, the electric core comprises a first electrode positioned on the first end part and a second electrode positioned on the second end part, and the first electrode and the second electrode respectively penetrate through the through holes of the two brackets. In this way, the connection mode of the battery cells can be simplified.

The energy storage power supply provided by the embodiment of the utility model comprises the battery module according to any one of the embodiments.

Among the above-mentioned energy storage power, the fixed part is fixed thermal-insulated sleeve between two accommodation parts of two supports, can fix thermal-insulated sleeve, and restriction thermal-insulated sleeve's rotation and vibrations are strikeed, will rotate and vibrations strike thermal-insulated sleeve's damage and reduce to the minimum, and furthest keeps thermal-insulated sleeve's structural stability and uniformity.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

fig. 1 is a schematic exploded view of a battery module according to an embodiment of the present utility model;

FIG. 2 is an enlarged schematic view of portion X of FIG. 1;

fig. 3 is another exploded view of the battery module according to the embodiment of the present utility model;

fig. 4 is a schematic cross-sectional view of the structure of a battery module according to an embodiment of the present utility model;

fig. 5 is an enlarged schematic view of a portion Y of fig. 4.

Description of main reference numerals:

the battery module comprises a battery module body-10, a bracket-11, a containing part-111, a containing cavity-1111, a clamping surface-1112, a containing part-1113, a connecting part-1114, a supporting part-1115, an opening-1116, a through hole-1117, a frame-112, a fixing component-1121, a fixing part-1122, a fixing hole-1123, a battery cell-12, a first end part-121, a first electrode-1211, a second end part-122, a connecting part-123, a heat insulation sleeve-13, a fixing part-14 and a bump-141.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present utility model and are not to be construed as limiting the present utility model.

The following disclosure provides many different embodiments, or examples, for implementing different features of the utility model. In order to simplify the present disclosure, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the utility model. Furthermore, the present utility model may repeat reference numerals and/or letters in the various examples, which are for the purpose of brevity and clarity, and which do not themselves indicate the relationship between the various embodiments and/or arrangements discussed. In addition, the present utility model provides examples of various specific processes and materials, but one of ordinary skill in the art will recognize the application of other processes and/or the use of other materials.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more features. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the description of the present specification, reference to the terms "one embodiment," "some embodiments," "illustrative embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in 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 orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

In the description of the present utility model, it should be noted that the terms "mounted," "connected," and "coupled" are to be construed broadly, as well as, for example, fixedly coupled, detachably coupled, or integrally coupled, unless otherwise specifically indicated and defined. Either mechanically or electrically. Can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.

Referring to fig. 1 and 2, a battery module 10 according to an embodiment of the present utility model includes two brackets 11, a plurality of battery cells 12, a thermal sleeve 13, and a fixing portion 14. The two brackets 11 are fixedly connected with each other. Each bracket 11 includes a receiving portion 111. The receiving portion 111 is provided with a plurality of receiving chambers 1111. The receiving portion 111 includes a clamping surface 1112. The receiving chamber 1111 is formed with an opening 1116 in the clamping surface 1112. Each cell 12 includes a first end 121, a connecting portion 123, and a second end 122. The connection portion 123 connects the first end portion 121 and the second end portion 122. The first end 121 fits into the receiving cavity 1111 of one of the brackets 11 through the opening 1116. The second end 122 fits into the receiving cavity 1111 of the other bracket 11 through the opening 1116. The heat insulating sleeve 13 is sleeved on the connecting part 123. The fixing portion 14 is provided on at least one of the two clamping surfaces 1112 of the two brackets 11. The fixing portion 14 fixes the thermal sleeve 13 between the two receiving portions 111 of the two brackets 11.

In the above battery module 10, the fixing portion 14 fixes the thermal insulation sleeve 13 between the two receiving portions 111 of the two brackets 11, so as to fix the thermal insulation sleeve 13, limit the rotation and vibration impact of the thermal insulation sleeve 13, minimize the damage of the rotation and impact to the thermal insulation sleeve 13, and maintain the structural stability and consistency of the thermal insulation sleeve 13 to the greatest extent.

In one embodiment, the battery cell 12 may be a cylindrical lithium iron phosphate battery cell and is fixed in the battery module 10 by the brackets 11, the two brackets 11 are respectively disposed at the top end and the bottom end of the battery cell 12, when the battery cell 12 is vertically placed, the upper portion of the battery cell 12 is a first end 121, and the lower portion of the battery cell 12 is a second end 122. The first end 121 may correspond to an end of the positive electrode of the battery 12 and may correspond to an end of the negative electrode of the battery 12. The polarity of the electrodes at the first ends 121 of the different cells 12 may be the same or different. The top surface of the accommodating portion 111 corresponds to the plane in which the clamping surface 1112 is located. The battery cell 12 passes through the opening 1116 in the holding surface 1112 and then abuts against the inner wall of the accommodating portion 111, and the accommodating portions 111 of the two holders 11 abut against the first end 121 and the second end 122 of the battery, respectively, so that the battery cell 12 can be fixed by the accommodating portion 111. The receiving cavity 1111 of the receiving part 111 may have a cylindrical shape corresponding to the battery cells 12, and the opening 1116 may have a circular shape, thereby facilitating the receiving of more battery cells 12 in the receiving part 111 and improving the capacity of the battery module 10. The thermal sleeve 13 is sleeved with a connecting part 123 for protecting other battery cells 12. The heat-insulating sleeve 13 can resist high temperature and has low heat conductivity coefficient, so that heat spreading can be effectively reduced. In the case of thermal runaway of a single cell 12, the thermal sleeve 13 can prevent heat generated by the cell 12 from spreading to surrounding cells 12, thereby preventing thermal runaway of surrounding cells 12 from being initiated. The thermal sleeve 13 may be made of aerogel material, and may absorb a certain amount of heat to mitigate the thermal runaway while reducing the thermal spread.

In addition, the battery module 10 is inevitably affected by shaking, vibration, etc. during the daily handling or long-distance transportation. The two fixing parts 14 can clamp and fix the thermal insulation sleeve 13 up and down, so that the thermal insulation sleeve 13 can be prevented from rotating or jumping relative to the bracket 11 when the battery module 10 is subjected to shaking vibration, and further structural damage of the thermal insulation sleeve 13 caused by impact to the bracket 11 is avoided. In another embodiment, a fixing portion 14 may be used to fix the heat insulation sleeve 13 by vertically clamping the heat insulation sleeve 13 in cooperation with a bracket 11, and of course, the fixing portion 14 may also be used to fix the heat insulation sleeve 13 by fastening or bonding.

Referring to fig. 1 to 4, in some embodiments, the fixing portion 14 is disposed on two clamping surfaces 1112 of two brackets 11.

In this way, the fixing effect on the insulating sleeve 13 can be enhanced.

Specifically, referring to fig. 1 to 4, in one embodiment, fixing portions 14 are provided on the clamping surfaces 1112 of the two brackets 11, and the two fixing portions 14 may respectively clamp the thermal insulation sleeve 13 at both ends of the thermal insulation sleeve 13. Compared with the heat-insulating sleeve 13 directly abutting against the clamping surface 1112, the heat-insulating sleeve 13 can be prevented from being deformed due to uneven stress caused by the concave-convex surface of the clamping surface 1112 by the fixing part 14. In another embodiment, the fixing portion 14 may be made of an elastic material, and when the fixing portion 14 clamps the thermal insulation sleeve 13, the fixing portion 14 may deform to increase the contact area with the thermal insulation sleeve 13, so as to reduce the pressure of the contact surface to avoid the thermal insulation sleeve 13 from being damaged by the extrusion of the fixing portion 14.

Referring to fig. 1 to 4, in some embodiments, the fixing portions 14 on the two brackets 11 are disposed opposite to each other along the length direction of the battery cells 12.

In this way, the safety and effectiveness of the thermal sleeve 13 can be ensured.

Specifically, referring to fig. 1 to 4, in one embodiment, the length direction of the battery core 12 corresponds to the up-down direction of the battery module 10, and in the up-down direction, the projections of the fixing portions 14 on the two brackets 11 in the up-down direction overlap, so that the stress points of the thermal insulation sleeve 13 at the top and the bottom are consistent, structural damage caused by bending of the thermal insulation sleeve 13 is avoided, and further safety and effectiveness of the thermal insulation sleeve 13 can be ensured. In another embodiment, the fixing portions 14 may be annularly disposed around the cells 12, or may be distributed in a dot shape around the cells 12.

Referring to fig. 2 to 5, in some embodiments, the fixing portion 14 includes a plurality of bumps 141. A plurality of bumps 141 are disposed about the opening 1116. A plurality of tabs 141 disposed about the opening 1116 are interference fit with the thermal sleeve 13.

In this way, the insulating sleeve 13 can be made smoother.

In particular, referring to fig. 2 to 5, in one embodiment, the fixing portion 14 may include three protrusions 141, and the three protrusions 141 are arranged around the opening 1116 in an isosceles triangle shape. In the case where the fixing portion 14 includes more protrusions 141, the plurality of protrusions 141 may be uniformly spaced around the opening 1116, thereby more smoothly fixing the heat shield sleeve 13, avoiding the one-sided suspension of the heat shield sleeve 13. The bump 141 may be semicircular or square. The lugs 141 may also be provided with grooves on the interface with the insulating sleeve 13. The shape of the groove corresponds to that of the heat-insulating sleeve 13, and a certain positioning effect can be achieved. The upper and lower brackets 11 are respectively provided with a bump 141 at the upper and lower ends of the heat insulation sleeve 13, the bump 141 can generate slight interference compression to the heat insulation sleeve 13, and the heat insulation sleeve 13 can be clamped and fixed on the brackets 11 through interference fit between the bump 141 and the heat insulation sleeve 13. In another embodiment, one end of the thermal sleeve 13 is in interference fit with the projection 141 of one bracket 11, and the other end is abutted with the other bracket 11, thereby clamping and fixing the thermal sleeve 13 on the bracket 11

Referring to fig. 1 to 5, in some embodiments, the accommodating portion 111 includes a plurality of accommodating members 1113. Each of the receiving members 1113 is provided with a receiving chamber 1111. Adjacent two of the receptacles 1113 are joined to form a joint 1114. Bump 141 is located at junction 1114.

In this way, the fixing effect on the insulating sleeve 13 can be enhanced.

Specifically, referring to fig. 1 to 5, in one embodiment, the accommodating member 1113 may be cylindrical, so as to correspond to the shape of the battery cells 12, while facilitating accommodating more battery cells 12 in the holder 11. The sidewalls of adjacent receptacles 1113 may be overlapped or integrally formed to reduce the amount of space occupied by the receptacles 1113. The side walls to which adjacent receptacles 1113 abut correspond to junctions 1114. The tab 141 may be provided at the junction 1114, i.e., at the top end of the sidewall of the receiver 1113. All of the receiving members 1113 may be integrally formed to improve the integrity and reduce deformation of the receiving members 1113, and the protrusions 141 are disposed at the stable connection 1114, which is more advantageous for fixing the insulating sleeve 13 and preventing the insulating sleeve 13 from moving. The bump 141 may be integrally formed with the connection portion 1114, so as to improve the fixing strength of the bump 141, and further avoid the fixing of the thermal sleeve 13 due to the loosening of the bump 141.

Referring to fig. 1-4, in some embodiments, the bracket 11 includes a frame 112. The receiving part 111 is located in the frame 112 and fixedly connected to the frame 112. The frame 112 is provided with a fixing member 1121 at a side thereof. The two brackets 11 are fixedly connected to each other by a fixing member 1121.

In this way, the fixing bracket 11 is facilitated.

Specifically, referring to fig. 1 to 4, in one embodiment, the frame 112 may enclose a space required for placing the accommodating portion 111, and may connect the upper and lower brackets 11 together as a whole through the fixing assembly 1121. The frame 112 may have a square shape, a cylindrical shape, or other polygonal shape, depending on the arrangement of the battery cells 12 and the molding requirements of the battery module 10. The periphery of the frame 112 may be closed or hollowed out to reduce the weight of the frame 112. In another embodiment, the battery module 10 is used for an energy storage power source (not shown). The frame 112 may also be provided with a connection structure to be connected to a housing of the energy storage power source, thereby fixing the battery module 10 to the energy storage power source.

Referring to fig. 1-4, in some embodiments, a securing assembly 1121 includes a securing member 1122 and a fastener (not shown). Mount 1122 is provided on the side of frame 112. The fixing member 1122 is provided with a fixing hole 1123. The fastener penetrates the fixing hole 1123 and locks the two brackets 11.

In this way, the fixing operation can be simplified.

Referring specifically to fig. 1-4, in one embodiment, the mount 1122 may be one, two, or more. In the case where there are a plurality of the fixing members 1122, the plurality of fixing members 1122 may be spaced around the frame 112, so that the connection stability between the two brackets 11 may be improved. In another embodiment, an internal thread may be provided in the fixing hole 1123, and an external thread may be provided in the fastener outer ring, so that the two brackets 11 may be fixed by the threads. After the two brackets 11 fix the battery cell 12 and the thermal insulation sleeve 13, the clamping force of the fixing part 14 on the thermal insulation sleeve 13 can be increased by screwing the fastener. Thus, the fixing operation of the bracket 11 is simple and the operation is convenient. In yet another embodiment, the middle portion of the fastener may be configured as a removable structure with the two ends of the fastener being configured with a ledge. The fastener can be split into two parts through the detachable structure and respectively penetrate through the fixing holes 1123 of the two brackets 11, and the convex edges of the fastener can respectively abut against the two fixing pieces 1122. By attaching and fixing the detachable structure, the two fixing pieces 1122 can be clamped by the fastener, thereby locking the two brackets 11. The detachable structure can be a screw or a buckle. In yet another embodiment, the fastener may also be a bolt.

Referring to fig. 1-4, in some embodiments, a holding member 1115 is disposed on an inner wall of the receiving chamber 1111. The holder 1115 holds the battery cell 12.

In this manner, the fixation of the cells 12 is facilitated.

Specifically, referring to fig. 1 to 4, in one embodiment, the holders 1115 of the two brackets 11 respectively abut the first end 121 and the second end 122 of the battery cell 12, so that the battery cell 12 can be fixed between the brackets 11. The holding member 1115 is disposed on the side of the battery cell 12, and may also keep the battery cell 12 at a certain distance from the heat insulation sleeve 13, for example, 1mm. Because of the cutting error of the thermal insulation sleeve 13 or the existence of a reserved gap, the battery cell 12 is difficult to keep the integrity with the thermal insulation sleeve 13, so that the battery cell 12 is separated from the thermal insulation sleeve 13, and the damage to the thermal insulation sleeve 13 caused by the impact of the battery cell 12 on the thermal insulation sleeve 13 in the small-range movement process can be avoided. In addition, the side surface of the abutting piece 1115 abutting against the battery cell 12 may be an inclined surface, and the inclined surface is inclined to the side surface of the battery cell 12, so that the abutting piece 1115 not only can provide enough supporting force for the battery cell 12, but also can leave a certain vertical movement space for the battery cell 12 to adapt to the clamping of the bracket 11.

Referring to fig. 1-4, in some embodiments, the bottom wall of the receiving chamber 1111 is provided with a through hole 1117. The cell 12 includes a first electrode 1211 located on the first end 121 and a second electrode (not shown) located on the second end 122. The first electrode 1211 and the second electrode are respectively penetrated through holes 1117 of the two brackets 11.

In this way, the manner of connection of the cells 12 can be simplified.

Specifically, referring to fig. 1 to 4, in one embodiment, the polarities of the first electrode 1211 and the second electrode are opposite, and the first electrode 1211 may be a positive electrode or a negative electrode. The polarities of the first electrodes 1211 of the different cells 12 may or may not be identical. In the case that the battery cells 12 are vertically formed into the battery module 10, all the first electrodes 1211 pass through the through holes 1117 of the upper holder 11, and all the second electrodes pass through the through holes 1117 of the lower holder 11, so that the series connection and/or parallel connection of all the battery cells 12 can be completed at the top and bottom of the battery module 10, and the electrical connection structure between the battery cells 12 is simplified. For example, the battery module 10 may be provided with a plurality of bus bars at the top and bottom of the rack 11, respectively, each bus bar being electrically connected to the first electrodes 1211 or the second electrodes of a plurality of adjacent cells 12, and further electrically connected to all the cells 12, and outputting or storing electric energy from all the cells 1215 as a whole. In addition, the battery module 10 may further include a collecting member electrically connected to the bus bar to collect information such as electric quantity, voltage or power of each of the battery cells 12.

An energy storage power supply according to an embodiment of the present utility model includes the battery module 10 of any one of the above embodiments.

In the above energy storage power supply, the fixing portion 14 fixes the thermal insulation sleeve 13 between the two accommodating portions 111 of the two brackets 11, so as to fix the thermal insulation sleeve 13, limit the rotation and vibration impact of the thermal insulation sleeve 13, minimize the damage of the rotation and vibration impact to the thermal insulation sleeve 13, and maintain the structural stability and consistency of the thermal insulation sleeve 13 to the greatest extent.

Specifically, in one embodiment, the battery module 10 may fix the thermal insulation sleeve 13 through the fixing part 14, so that the movement of the thermal insulation sleeve 13 may be restricted to protect the thermal insulation sleeve 13, and further, the physical properties of the thermal insulation sleeve 13 may be ensured to be stable, so that the thermal insulation sleeve 13 may normally exert a protective effect when the battery cell 12 is thermally out of control, thereby avoiding the initiation of larger accidents. Thus, the energy storage power supply can have higher safety.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many variations, combinations, modifications, substitutions and alterations of these embodiments may be made without departing from the principles and spirit of the utility model, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A battery module, comprising:

the device comprises two brackets, wherein the two brackets are fixedly connected with each other, each bracket comprises a containing part, the containing part is provided with a plurality of containing cavities, each containing part comprises a clamping surface, and the containing cavities are provided with openings on the clamping surfaces;

each cell comprises a first end part, a connecting part and a second end part, wherein the connecting part is connected with the first end part and the second end part, the first end part is arranged in the accommodating cavity of one bracket through the opening, and the second end part is arranged in the accommodating cavity of the other bracket through the opening;

the thermal insulation sleeve is sleeved on the connecting part;

and the fixing part is arranged on at least one of the two clamping surfaces of the two brackets, and fixes the thermal insulation sleeve between the two accommodating parts of the two brackets.

2. The battery module according to claim 1, wherein the fixing portions are provided on both clamping surfaces of the two brackets.

3. The battery module according to claim 2, wherein the fixing portions on the two brackets are disposed opposite to each other along the length direction of the battery cell.

4. The battery module of claim 1, wherein the securing portion includes a plurality of tabs disposed about the opening, the plurality of tabs disposed about the opening being in interference fit with the insulating sleeve.

5. The battery module according to claim 4, wherein the receiving part includes a plurality of receiving members, each of the receiving members is provided with one of the receiving chambers, adjacent two of the receiving members are connected to form a connection site, and the protrusion is located at the connection site.

6. The battery module according to claim 1, wherein the bracket comprises a frame, the receiving part is positioned in the frame and fixedly connected with the frame, a fixing assembly is arranged at a side of the frame, and the two brackets are fixedly connected with each other through the fixing assembly.

7. The battery module according to claim 6, wherein the fixing assembly includes a fixing member provided on the side of the frame, the fixing member being provided with a fixing hole, and a fastener penetrating the fixing hole and locking the two brackets.

8. The battery module according to claim 1, wherein an abutting member is provided on an inner wall of the accommodation chamber, the abutting member abutting the battery cell.

9. The battery module according to claim 1, wherein the bottom wall of the accommodating chamber is provided with a through hole, the battery cell includes a first electrode located on the first end portion and a second electrode located on the second end portion, and the first electrode and the second electrode are respectively inserted through the through holes of the two brackets.

10. An energy storage power supply comprising the battery module according to any one of claims 1 to 9.