CN212695263U - Battery module structure - Google Patents
Battery module structure Download PDFInfo
- Publication number
- CN212695263U CN212695263U CN202021493132.XU CN202021493132U CN212695263U CN 212695263 U CN212695263 U CN 212695263U CN 202021493132 U CN202021493132 U CN 202021493132U CN 212695263 U CN212695263 U CN 212695263U
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- cover plate
- upper cover
- insulating
- plate
- lower cover
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- 238000009413 insulation Methods 0.000 claims abstract description 27
- 238000010438 heat treatment Methods 0.000 claims abstract description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 34
- 229910052782 aluminium Inorganic materials 0.000 claims description 34
- 230000001681 protective effect Effects 0.000 claims description 19
- 230000003014 reinforcing effect Effects 0.000 claims description 5
- 238000009434 installation Methods 0.000 abstract description 5
- 238000001746 injection moulding Methods 0.000 abstract description 3
- 210000004027 cell Anatomy 0.000 description 34
- 239000004411 aluminium Substances 0.000 description 9
- 239000004593 Epoxy Substances 0.000 description 2
- 239000012212 insulator Substances 0.000 description 2
- 239000010445 mica Substances 0.000 description 2
- 229910052618 mica group Inorganic materials 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 210000004460 N cell Anatomy 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Battery Mounting, Suspending (AREA)
Abstract
The utility model discloses a battery module structure, which comprises an upper cover plate, a lower cover plate, an insulating part, a heating film and an electric core module, wherein the heating film is arranged between the lower cover plate and the electric core module, the electric core module is formed by connecting N electric core groups in parallel, and each electric core group is formed by connecting M electric cores in series; the insulating part comprises a plurality of vertically arranged first insulating plates for separating the N electric core groups and a plurality of second insulating plates which are vertically connected with the first insulating plates and are used for separating the electric cores connected in series in the electric core groups; and an insulation clamping groove used for clamping the insulation piece is formed in the inner side surface of the lower cover plate. The utility model discloses well insulating part that uses adopts injection moulding process, insulating part and upper cover plate and lower apron cooperate, are guaranteeing under the not crooked prerequisite of insulating part installation, make to separate the parallelly connected electric core of cluster effectively completely, avoid the potential safety hazard that the insulating inefficacy problem brought.
Description
Technical Field
The utility model belongs to the technical field of the battery module, concretely relates to battery module structure.
Background
Along with the high-efficient development of new forms of energy technique, the increase of battery loading volume, the safety class requirement of battery is also more and more strict, and the insulating protection between the battery module, the insulating protection between the series connection electricity core in the module are the key of guaranteeing power battery package safety.
The insulating part between the electric core of establishing ties at present all adopts the sheet (PPE board, mica plate, epoxy board etc.) of gum to bond in the side of single electric core, plays insulating effect, nevertheless guarantees insulating board 100% isolated electric core of establishing ties because of bonding precision is poor during production, and does not have effectual frock, and the insulating board (PPE board, mica plate, epoxy board) of gum bonds "crooked" promptly, leads to insulating inefficacy, causes the safety problem.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a battery module structure to overcome above-mentioned technical problem.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a battery module structure comprises an upper cover plate, a lower cover plate, an insulating part, a heating film and a battery cell module, wherein the heating film is arranged between the lower cover plate and the battery cell module, the battery cell module is formed by connecting N battery cell groups in parallel, and each battery cell group is formed by connecting M battery cells in series;
the insulating part comprises a plurality of first insulating plates which are vertically arranged and separate the N electric core groups and a plurality of second insulating plates which are vertically arranged with the first insulating plates and are used for separating the electric cores which are connected in series in the electric core groups;
the upper cover plate and the lower cover plate are both of frame structures consisting of transverse plates and four side plates;
and the inner side surfaces of the four side plates of the lower cover plate are provided with insulating clamping grooves for clamping the insulating part.
Furthermore, a plurality of bus grooves are formed in the upper end face of the transverse plate of the upper cover plate, positive and negative aluminum busbar connecting pieces are connected to oppositely arranged side plates in the upper cover plate, aluminum busbars are connected in the bus grooves, and positive busbars and negative busbars in the aluminum busbars are installed in the bus grooves and then are connected to the positive and negative aluminum busbar connecting pieces respectively.
Further, the battery module structure still includes high-pressure protective structure, high-pressure protective structure is including connecting just locate on the upper cover plate the high-pressure protective cover one in the outside of aluminium busbar is in with connecting high-pressure protective cover two on the positive negative pole aluminium bar connecting piece.
Further, the aluminium busbar with be equipped with low-voltage electrical system between the high-pressure protective cover, low-voltage electrical system includes that temperature acquisition pencil, voltage acquisition pencil and rigid coupling are in the outer low pressure connector of curb plate of upper cover plate, the terminal connection of temperature acquisition pencil and voltage acquisition pencil is on the aluminium busbar, temperature acquisition pencil and voltage acquisition pencil correspond extremely on the low pressure connector.
Furthermore, the upper cover plate and the lower cover plate are connected through a fixing piece, and the fixing piece comprises a first fixed supporting leg connected to the outer side of a side plate arranged in the upper cover plate oppositely, a second fixed supporting leg connected to the side plate of the lower cover plate and corresponding to the first fixed supporting leg, and a connecting rod connected with the first fixed supporting leg and the second fixed supporting leg.
Furthermore, fool-proof structures are arranged on the upper cover plate and the lower cover plate.
And furthermore, an insulating reinforcing rib which is butted with the first insulating plate and the second insulating plate is connected to the end face, opposite to the battery cell module, of the transverse plate of the upper cover plate.
Has the advantages that:
the utility model discloses well insulating part that uses adopts injection moulding process, insulating part and upper cover plate and lower apron cooperate, are guaranteeing under the not crooked prerequisite of insulating part installation, make to separate the parallelly connected electric core of cluster effectively completely, avoid the potential safety hazard that the insulating inefficacy problem brought.
Drawings
Fig. 1 is a schematic diagram of the explosion structure of the present invention;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is a schematic structural view of the upper end surface of the upper cover plate of the present invention;
FIG. 4 is a schematic structural view of the lower end surface of the upper cover plate of the present invention;
FIG. 5 is a schematic structural view of the middle and lower cover plates of the present invention;
FIG. 6 is a schematic view of the structure of the insulator of the present invention;
in the figure: 10. an upper cover plate; 11. a bus bar slot; 12. positive and negative aluminum row connecting pieces; 13. a notch; 14. a circular hole; 20. a lower cover plate; 21. an insulating clamping groove; 22. heating the film outlet; 30. an insulating member; 31. a first insulating plate; 32. a second insulating plate; 33. insulating reinforcing ribs; 40. heating the film; 50. a battery cell module; 60. an aluminum busbar; 61. a positive electrode bus bar; 62. a negative electrode bus bar; 70. a high voltage protection structure; 71. a first high-pressure protective cover; 72. a second high-pressure protective cover; 80. a low voltage electrical system; 81. a low voltage connector; 90. a fixing member; 91. a first fixed support leg; 92. a second fixed support leg; 100. a fool-proof structure; 110. and a through hole.
Detailed Description
In the description of the present invention, unless otherwise specified, the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships only for the purpose of describing the present invention and simplifying the description, but do not indicate or imply that the device or structure referred to must have a particular orientation and therefore should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 and fig. 2, a battery module structure include upper cover plate, lower apron, insulator, heating film, electric core module, low pressure electrical system, high pressure protective structure, aluminium busbar, mounting, prevent slow-witted structure and insulating strengthening rib.
The cell module is formed by connecting N cell groups in parallel, and each cell group is formed by connecting M cells in series, so that N battery modules connected in parallel and M in series are formed, wherein as shown in FIG. 6, the insulating part comprises a plurality of vertically arranged first insulating plates and a plurality of second insulating plates, wherein the first insulating plates are vertically connected with the first insulating plates and are used for separating the cells connected in series in each cell group, the insulating part adopts an injection molding process, and the first insulating plates and the second insulating plates are molded into a whole; as shown in fig. 1, the battery cell module formed by 16 battery cells is formed by 2 and 8 strings in the drawings of the present invention, and thus, the first insulation board is 1, the second insulation board is 3, so that the first insulation board separates two groups connected in parallel and the second insulation board separates the battery cell group connected in series into battery cells with 2 cells connected in series as the minimum unit.
Therefore, the data of the first insulation board is determined according to the number of the N parallel-connected battery cell groups, N-1 first insulation boards are needed for realizing the separation of the N parallel-connected battery cell groups, the number of the second insulation boards is determined according to the number of the battery cells in the minimum unit for final separation, the first insulation boards and the second insulation boards can be combined, and the series-parallel battery cell modules with different numbers can be separated and insulated.
As shown in fig. 3, 4, and 5, the upper cover plate and the lower cover plate are both frame structures composed of transverse plates and four side plates, the upper cover plate and the lower cover plate are arranged oppositely, the cell module is arranged between the upper cover plate and the lower cover plate, the four side plates of the upper cover plate and the four side plates of the lower cover plate form a module box after being assembled with the cell module, the cell module is wrapped inside the box body to form a positioning function, and poor insulation caused by displacement of the cell is prevented.
As shown in fig. 5, insulation slots are respectively formed on inner side surfaces of four side plates of the lower cover plate, wherein the insulation slots on two side plates which are oppositely arranged correspond to the first insulation plate, and the insulation slots on the other two side plates which are oppositely arranged correspond to the second insulation plate, so that the number of the insulation slots is determined by the number of the first insulation plate and the second insulation plate; therefore, the lower end of the insulating part is matched with the lower cover plate during assembly, the insulating part is prevented from being skewed during installation, the upper end of the insulating part extends to the upper cover plate and is matched with the upper cover plate, and therefore the series-connected battery cells are effectively separated, and potential safety hazards caused by insulation failure are avoided; the insulation piece is made of PC + ABS, so that the strength is sufficient, the expansion force of the battery cell can be effectively absorbed, and insulation failure is avoided; the structural design of the insulating part effectively controls the insulating area between the series-connected battery cores, can reach the possible contact surface covering the battery cores by 100 percent, eliminates the phenomenon that the insulation is not in place due to poor bonding precision in the prior art, and improves the safety and the reliability of the battery core module.
Meanwhile, as shown in fig. 4, insulating reinforcing ribs may be mounted on the end surface of the inner side of the upper cover plate, and when the top of the battery cell module is butted to the upper cover plate, the insulating reinforcing ribs of the upper cover plate and the insulating members are butted one on another up and down to form a closed insulating protection surface.
As shown in fig. 1, the battery module structure further includes an aluminum bus bar, as shown in fig. 3, a plurality of bus bar grooves are formed in an upper end surface of a transverse plate of the upper cover plate, and positive and negative aluminum bar connecting members are respectively connected to two side plates of the upper cover plate in the length direction, and the positive and negative aluminum bar connecting members include a positive aluminum bar connecting member and a negative aluminum bar connecting member; the aluminum bus bars are arranged in the bus bar grooves, positive bus bars 61 and negative bus bars 62 in the aluminum bus bars are arranged in the bus bar grooves and then are respectively connected to the positive aluminum bar connecting piece and the negative aluminum bar connecting piece, notches 13 are further formed in the upper cover plate, the machining number of the notches is 2 times of the number of the electric cores, so that the positive and negative electrodes of each electric core are arranged in the notches, the notches are distributed in the bus bar grooves, and the aluminum bus bars are welded and fixed with the positive and negative electrodes of the electric cores when arranged in the bus bar grooves; as shown in fig. 3, the number of the bus bar grooves is 9, the number of the aluminum bus bars is 9, and the number of the notches is 32, so that the connection between the battery cells can be realized.
Wherein, as shown in fig. 1 and fig. 2, the battery module structure still includes high-pressure protective structure 7, high-pressure protective structure is including installing on the upper cover plate and locating the high-pressure protective cover 71 in the outside of aluminium busbar with install the high-pressure protective cover two on the positive negative pole aluminium gang connecting piece, the curb plate of upper cover plate is equipped with the buckle outward, high-pressure protective cover corresponds on one and is equipped with the card hole to this realizes the installation of high-pressure protective cover one, the mounting means of high-pressure protective cover two can be the same with high-pressure protective cover one, realizes the high-pressure protection of this battery module structure from this, makes to insulate between this battery module structure and the battery box.
Wherein, as shown in fig. 1, battery module structure still includes low-voltage electrical system, low-voltage electrical system locates the aluminium busbar with between the high-pressure protective cover, low-voltage electrical system includes that temperature acquisition pencil, voltage acquisition pencil and joint are in the outer low-voltage connector 81 of curb plate of upper cover plate, the terminal welding of temperature acquisition pencil and voltage acquisition pencil is on the aluminium busbar, temperature acquisition pencil and voltage acquisition pencil correspond to on the low-voltage connector, realize information acquisition from this.
As shown in fig. 3, on the upper cover plate and locate the bus bar groove is processed outward and is had a plurality of round holes 14 the bus bar groove is equipped with the connection outward the fixed buckle of low pressure collection pencil of the up end of upper cover plate, the low pressure collection pencil is temperature acquisition pencil and voltage acquisition pencil promptly, the position of round hole with the explosion-proof valve at electric core top is put correspondingly, the fixed buckle of low pressure pencil sets up intercommunication structure from top to bottom under the prerequisite that guarantees that the interval is less than 50mm, sets up on electric core explosion-proof valve, collects as an organic whole with the round hole on low pressure pencil fixed buckle and the explosion-proof valve, has both realized the fixed function of low pressure pencil, realizes the function of promptly opening of explosion-proof valve again, the effectual security that guarantees the battery.
As shown in fig. 1 to 5, a fool-proof structure 100 is relatively disposed on one of the side plates of the upper cover plate and a corresponding side plate of the lower cover plate, that is, the side plate extends downward or upward to form a protruding plate, and the fool-proof structure corresponds to the fool-proof structure when the upper cover plate, the battery cell module and the lower cover plate are mounted; a fool-proof structure can be arranged on the bus bar groove, so that the problems that the safety performance of the battery module is reduced and the cost is wasted due to installation errors caused by human factors are solved.
As shown in fig. 1 and 2, after the upper cover plate, the lower cover plate and the battery cell module are assembled, the upper cover plate and the lower cover plate are connected through a fixing part 90, the fixing part comprises a first fixed support leg 91 connected to the outer side of a side plate arranged in the upper cover plate relatively, a second fixed support leg 92 connected to the side plate of the lower cover plate and corresponding to the first fixed support leg, and a connecting rod connected to the first fixed support leg and the second fixed support leg, the pull rod is installed on the battery box body, and the pull rod penetrates through the second fixed support leg from the first fixed support leg from top to bottom and is used for fixing the battery module structure and the battery box body for installing the battery module structure, so that the assembly of the battery module structure is completed.
As shown in fig. 5, a heating film outlet 22 is disposed on one of the side plates of the lower base plate, the heating film is disposed between the lower cover plate and the battery cell module, a wire outlet of the heating film passes through the heating film outlet, and the heating film is used for heating the bottom of the battery cell module at low temperature.
In the above structure, a plurality of through holes 110 are formed on the upper cover plate, the lower cover plate and the high-pressure protective cover, so as to achieve the purpose of reducing the weight of the battery module.
In order to make the purpose, technical solution and advantages of the present invention more concise and clear, the present invention is described with the above embodiments, which are only used for describing the present invention, and can not be understood as a limitation to the scope of the present invention. It should be understood that any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (7)
1. A battery module structure is characterized by comprising an upper cover plate (10), a lower cover plate (20), an insulating part (30), a heating film (40) and a battery cell module (50), wherein the heating film is arranged between the lower cover plate and the battery cell module, the battery cell module is formed by connecting N battery cell groups in parallel, and each battery cell group is formed by connecting M battery cells in series;
the insulating part comprises a plurality of vertically arranged first insulating plates (31) for separating N electric core groups and a plurality of second insulating plates (32) which are vertically connected with the first insulating plates and are used for separating the electric cores connected in series in the electric core groups;
the upper cover plate and the lower cover plate are both of frame structures consisting of transverse plates and four side plates;
and the inner side surfaces of the four side plates of the lower cover plate are provided with insulating clamping grooves (21) for clamping the insulating part.
2. The battery module structure according to claim 1, wherein a plurality of bus grooves (11) are formed in the upper end face of the transverse plate of the upper cover plate, positive and negative aluminum bar connectors (12) are connected to the oppositely-arranged side plates of the upper cover plate, aluminum bus bars (60) are connected to the bus grooves, and positive bus bars (61) and negative bus bars (62) of the aluminum bus bars are installed in the bus grooves and then connected to the positive and negative aluminum bar connectors respectively.
3. The battery module structure according to claim 2, further comprising a high-voltage protection structure (70), wherein the high-voltage protection structure comprises a first high-voltage protection cover (71) mounted on the upper cover plate and arranged outside the aluminum busbar, and a second high-voltage protection cover (72) mounted on the positive and negative aluminum busbar connecting piece.
4. The battery module structure according to claim 3, wherein a low-voltage electrical system (80) is arranged between the aluminum bus bar and the high-voltage protective cover, the low-voltage electrical system comprises a temperature collection wire harness, a voltage collection wire harness and a low-voltage connector (81) fixedly connected to the outside of the side plate of the upper cover plate, terminals of the temperature collection wire harness and the voltage collection wire harness are connected to the aluminum bus bar, and the temperature collection wire harness and the voltage collection wire harness correspond to the low-voltage connector.
5. The battery module structure according to claim 1, wherein the upper cover plate and the lower cover plate are connected by a fixing member (90) comprising a first fixing leg (91) connected to the outside of the side plate oppositely disposed in the upper cover plate, a second fixing leg (92) connected to the side plate of the lower cover plate and corresponding to the first fixing leg, and a connecting rod connecting the first fixing leg and the second fixing leg.
6. The battery module structure according to claim 1, wherein the upper cover plate and the lower cover plate are provided with fool-proof structures (100).
7. The battery module structure of claim 1, wherein an end face, opposite to the cell module, of the transverse plate of the upper cover plate is connected with an insulation reinforcing rib (33) butted with the first insulation plate and the second insulation plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493132.XU CN212695263U (en) | 2020-07-24 | 2020-07-24 | Battery module structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021493132.XU CN212695263U (en) | 2020-07-24 | 2020-07-24 | Battery module structure |
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| Publication Number | Publication Date |
|---|---|
| CN212695263U true CN212695263U (en) | 2021-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021493132.XU Active CN212695263U (en) | 2020-07-24 | 2020-07-24 | Battery module structure |
Country Status (1)
| Country | Link |
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| CN (1) | CN212695263U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130968A (en) * | 2021-04-14 | 2021-07-16 | 湖北亿纬动力有限公司 | Manufacturing method of battery module and battery module |
| CN113611948A (en) * | 2021-08-02 | 2021-11-05 | 广州小鹏汽车科技有限公司 | Battery module and battery pack |
| CN114171827A (en) * | 2021-12-09 | 2022-03-11 | 安徽江淮汽车集团股份有限公司 | Lithium ion power battery pack assembly of electric automobile |
-
2020
- 2020-07-24 CN CN202021493132.XU patent/CN212695263U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113130968A (en) * | 2021-04-14 | 2021-07-16 | 湖北亿纬动力有限公司 | Manufacturing method of battery module and battery module |
| CN113130968B (en) * | 2021-04-14 | 2023-05-05 | 湖北亿纬动力有限公司 | Manufacturing method of battery module and battery module |
| CN113611948A (en) * | 2021-08-02 | 2021-11-05 | 广州小鹏汽车科技有限公司 | Battery module and battery pack |
| CN113611948B (en) * | 2021-08-02 | 2023-10-31 | 广州小鹏汽车科技有限公司 | Battery module and battery pack |
| CN114171827A (en) * | 2021-12-09 | 2022-03-11 | 安徽江淮汽车集团股份有限公司 | Lithium ion power battery pack assembly of electric automobile |
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