WO2019056270A1 - 固定架、电池单元及电池模组 - Google Patents

固定架、电池单元及电池模组 Download PDF

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Publication number
WO2019056270A1
WO2019056270A1 PCT/CN2017/102753 CN2017102753W WO2019056270A1 WO 2019056270 A1 WO2019056270 A1 WO 2019056270A1 CN 2017102753 W CN2017102753 W CN 2017102753W WO 2019056270 A1 WO2019056270 A1 WO 2019056270A1
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WO
WIPO (PCT)
Prior art keywords
frame body
frame
width direction
thickness direction
battery
Prior art date
Application number
PCT/CN2017/102753
Other languages
English (en)
French (fr)
Inventor
张上富
蔡锦榕
杨习文
姚己华
钱木
项延火
Original Assignee
宁德时代新能源科技股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 宁德时代新能源科技股份有限公司 filed Critical 宁德时代新能源科技股份有限公司
Priority to PCT/CN2017/102753 priority Critical patent/WO2019056270A1/zh
Publication of WO2019056270A1 publication Critical patent/WO2019056270A1/zh

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings, jackets or wrappings of a single cell or a single battery
    • H01M50/102—Primary casings, jackets or wrappings of a single cell or a single battery characterised by their shape or physical structure
    • H01M50/105—Pouches or flexible bags
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/60—Heating or cooling; Temperature control
    • 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

Definitions

  • the present invention relates to the field of batteries, and in particular, to a fixing frame, a battery unit, and a battery module.
  • the secondary battery has various forms.
  • the secondary battery can be classified into a pouch type secondary battery and a can type secondary battery depending on the type of the casing.
  • the outer casing of the pouch type secondary battery is made of a laminate including a polymer layer and a metal layer.
  • the outer casing of the can type secondary battery is usually composed of a metal case and a metal cover sheet.
  • the battery module using the bag type secondary battery generally forms a fixing structure of the battery unit by integral molding and directly forming the battery unit through the aluminum plate or the plastic structure, but the implementation has the following problems:
  • the overall overcurrent capability of the battery unit is weak, which can not meet the fast charging demand of the whole vehicle; at present, the battery unit is welded to realize the electrical connection, but the effective contact area of the welding is very limited regardless of ultrasonic welding or laser welding. Then, the overall overcurrent capability of the battery module is relatively weak, and it is difficult to meet the increasingly prominent fast charging demand;
  • an object of the present invention is to provide a fixing frame, a battery unit and a battery module, which can provide additional insulation protection for the tabs of the pouch type secondary battery during assembly of the battery module. Measures.
  • the present invention provides a fixing frame, comprising: a first frame body; a second frame body; and a connecting member located between the first frame body and the second frame body, respectively Connected to the first frame and the second frame.
  • the first frame body and the second frame body can be turned toward the opposite connectors to each other such that the first frame body and the second frame body are stacked and joined together in the thickness direction to at least form the head receiving space.
  • the present invention provides a battery unit including at least one pouch type secondary battery, each pouch type secondary battery having opposite polarity tabs.
  • the battery unit also includes a mounting bracket.
  • the fixing frame includes: a first frame body; a second frame body; and a connecting member located on the same side of the first frame body and the second frame body in the width direction Do not connect to the first frame and the second frame. Wherein the first frame and the second frame are opposite in the thickness direction and joined together on one side in the width direction to accommodate the at least one pouch type secondary battery and form the at least one pouch type secondary battery a head portion and a head receiving space for completely accommodating the tabs of the at least one pouch type secondary battery.
  • the present invention provides a battery module including a plurality of battery cells stacked together in a thickness direction according to the second aspect of the present invention.
  • the tabs of the pouch type secondary battery can be completely accommodated in the head receiving space, and then completely shielded by the first frame and the second frame, thereby eliminating the need
  • it is necessary to provide extra insulation protection measures for the ear which not only reduces the development cost of the battery module, but also greatly improves the assembly efficiency of the battery module.
  • FIG. 1 is a perspective view of a mount in accordance with the present invention in an unfolded state.
  • Fig. 2 is a perspective view of another angle of Fig. 1.
  • Figure 3 is a perspective view of a mounting bracket in accordance with the present invention in a state in which the first frame and/or the second frame are inverted and joined with respect to the connector.
  • Figure 4 is a perspective view of another angle of Figure 3.
  • Fig. 5 is a modification similar to Fig. 3.
  • Fig. 6 is a modification of Fig. 5;
  • Figure 7 is a perspective view of another embodiment of the holder of the present invention.
  • Figure 8 is a perspective view of the holder of Figure 7 as viewed from another angle.
  • Figure 9 is an exploded view of a battery unit in accordance with the present invention.
  • Figure 10 is an assembled perspective view of a battery unit in accordance with the present invention.
  • Figure 11 is a perspective view of another angle of Figure 10.
  • Figure 12 is a perspective view of a conductive block of the battery unit of Figure 9.
  • Figure 13 is a perspective view of another angle of Figure 12 .
  • Figure 14 shows the relationship between the two tabs, the conductive blocks and the fixture, for the sake of clarity, the two tabs are not in contact with the conductive blocks.
  • Figure 15 is a partial cross-sectional view of Figure 10 .
  • Fig. 16 is a modification of Fig. 15;
  • Fig. 17 is another modification of Fig. 15;
  • Figure 18 is an assembled perspective view of another embodiment of a battery unit in accordance with the present invention, similar to Figure 10.
  • FIG. 19 is an exploded view of the battery unit of FIG. 18.
  • Figure 20 is a perspective view of still another embodiment of the battery unit similar to Figure 18, wherein a conductive block is used as an output guide Electric block.
  • FIG 21 is a schematic illustration of an embodiment of a battery module in accordance with the present invention employing the battery cells of Figures 9-11.
  • Figure 22 is a schematic illustration of another embodiment of a battery module in accordance with the present invention employing the battery cells of Figures 18-20.
  • a mounting bracket 12 includes: a first housing 121; a second housing 122; and a connecting member 123 between the first housing 121 and the second housing 122. And connected to the first frame 121 and the second frame 122, respectively.
  • the first frame body 121 and the second frame body 122 can be inverted relative to each other with respect to the connecting member 123 so that the first frame body 121 and the second frame body 122 are stacked and joined together in the thickness direction T to form at least the head receiving space.
  • the tab 111 of the pouch type secondary battery 11 to be described later can be completely accommodated in the head housing space S2, and is further completely covered by the first housing 121 and the second housing 122. Shielding, so that it is not necessary to provide additional insulation protection for the tab 111 during assembly of the battery module as in the background art, which not only reduces the development cost of the battery module, but also greatly improves the assembly of the battery module. effectiveness.
  • the first frame body 121 and the second frame body 122 together form a tail accommodating space S1 for accommodating the tail portion of the pouch type secondary battery 11, and two sides of the side portion of the pouch type secondary battery 11
  • the accommodating space S3 and the intermediate accommodating space S4 of the remaining part of the pouch type secondary battery 11 surrounded by the tail accommodating space S1, the head accommodating space S2, and the two side accommodating spaces S3.
  • the first housing 121 has a first width direction inner frame portion 1211 connected to one side in the width direction W of the connector 123, and a first width direction outer frame portion 1212 along the width direction W.
  • the first width direction inner frame portion 1211 faces;
  • the first length direction head frame portion 1213 is connected between the first width direction inner frame portion 1211 and the first width direction outer frame portion 1212, and the first housing recess portion R1 is formed;
  • the first longitudinal direction tail frame portion 1214 is opposed to the first longitudinal direction head frame portion 1213 in the longitudinal direction L and is connected between the first width direction inner frame portion 1211 and the first width direction outer frame portion 1212 to form a first The groove C1 is received.
  • the first longitudinal direction head frame portion 1213, the first width direction outer frame portion 1212, the first length direction tail frame portion 1214, and the first width direction inner frame portion 1211 enclose the first hollow cavity H1.
  • the second housing 122 has a second width direction inner frame portion 1221 connected to the other side in the width direction W of the connector 123, and a second width direction outer frame portion 1222 along the width direction W and the second width direction inner frame.
  • the second length direction head frame portion 1223 is connected between the second width direction inner frame portion 1221 and the second width direction outer frame portion 1222, and is formed with the second housing recess portion R2 and the second length direction tail frame
  • the portion 1224 is opposed to the second longitudinal direction head frame portion 1223 in the longitudinal direction L and is connected between the second width direction inner frame portion 1221 and the second width direction outer frame portion 1222, and the second receiving groove C2 is formed.
  • the second longitudinal direction head frame portion 1223, the second width direction outer frame portion 1222, the second longitudinal direction tail frame portion 1224, and the second width direction inner frame portion 1221 surround the second hollow cavity H2.
  • the first housing recess R1 and the first The second receiving recess R2 forms a head receiving space S2
  • the first receiving groove C1 and The second receiving groove C2 forms a tail receiving space S1
  • the first width direction inner frame portion 1211 and the second width direction inner frame portion 1221 form one side receiving space S3, the first width direction outer frame portion 1212 and the second width direction.
  • the outer frame portion 1222 forms the other side accommodating space S3, and the first hollow space H1 and the second middle cavity H2 form an intermediate accommodating space S4.
  • the first frame 121 and the second frame 122 can be interlocked with each other to be joined together.
  • the setting of the fastening structure can be performed in a variety of ways. Specific examples are as follows.
  • the first width direction outer frame portion 1212 is provided with a first fastening hole 12121
  • the second width direction outer frame portion 1222 is provided with a second fastening protrusion 12221 .
  • first fastening hole 12121 is The second fastening protrusion 12221 is fastened to join the first frame 121 and the second frame 122 together.
  • the first width direction outer frame portion 1212 is provided with a first fastening protrusion 12122
  • the second width direction outer frame portion 1222 is provided with a second fastening hole 12222 .
  • the first length direction tail frame portion 1214 is provided with a first card hole 12141; and the second length direction tail frame portion 1224 is provided with a second buckle 12241; wherein, when the first frame body is When the first frame body 121 and the second frame body 122 are folded together in the thickness direction T, the first frame hole 121 and the second frame body 12 and the second frame body 122 are folded toward each other. The first frame 121 and the second frame 122 are joined together.
  • the first length direction tail frame portion 1214 is provided with a first buckle 12142; the second length direction tail frame portion 1224 is provided with a second card hole 12242; wherein, when the first frame body When the first frame body 121 and the second frame body 122 are stacked together in the thickness direction T, the first frame body 121 and the second frame body 122 are folded relative to each other. The first frame 121 and the second frame 122 are joined together.
  • the first lengthwise head frame portion 1213 has three first mounting protrusions 12131 spaced apart in the width direction W, and each of the first mounting protrusions 12131 has a thickness direction T extending. a first mounting hole 121311; the second length direction head frame portion 1223 has three second mounting protrusions 12231 spaced apart in the width direction W, and each of the second mounting protrusions 12231 has a second mounting hole 122311 extending in the thickness direction T .
  • each of the first mounting protrusions 12131 And a corresponding one of the second mounting protrusions 12231 are stacked together in the thickness direction T, and each of the first mounting holes 121311 and the corresponding one of the second mounting holes 122311 are aligned in the thickness direction T.
  • the first length direction head frame portion 1213 has two through holes 12132 extending through the first length direction head frame portion 1213 in the thickness direction T, and each of the through holes 12132 is located adjacent to the two first mounting protrusions. Between the sections 12131.
  • the second length direction head frame portion 1223 has two mounting seats 12232, and each of the mounting seats 12232 has an engagement hole 122321 extending in the thickness direction T.
  • the connecting member 123 has a main body portion 1231 and two edge portions 1232 located on both sides of the main body portion 1231 in the width direction W, respectively.
  • the first frame body 121 and the second frame body 122 (specifically, the first width direction inner side frame portion 1211 and the second width direction inner side frame portion 1221) are connected, and each edge portion 1232 has the entire length of the connecting member 123 in the longitudinal direction L.
  • a recess 12321 extending in length. The arrangement of the recesses 12321 facilitates that the first frame body 121 and the second frame body 122 are turned toward each other with respect to the connecting member 123.
  • the minimum thickness of the recess 12321 is less than the minimum thickness of the body portion 1231. As shown in FIG. 16, the minimum thickness of the depressed portion 12321 is larger than the maximum thickness of the main body portion 1231.
  • the connecting members 123 are plural and arranged at intervals in the longitudinal direction L.
  • the connecting member 123 is one and extends over the entire length of the first width direction inner side frame portion 1211 and the second width direction inner side frame portion 1221.
  • the connecting member 123 is configured to pass through the first frame body 121 and the second frame body 122 in the longitudinal direction L (specifically, the first width direction inner side frame portion 1211 and the second width) The axis of the inner side frame portion 1221).
  • the first frame 121 and the second frame 122 are separately formed.
  • the fixing frame 12 is an integrally formed plastic member.
  • the plastic part can be a plastic material such as PP which is relatively flexible.
  • the first length direction head frame portion 1213 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T;
  • the second length direction head frame The portion 1223 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T;
  • the first length direction tail frame portion 1214 is provided with an assembly column P that protrudes outward in the thickness direction T Or the fitting groove G recessed inward in the thickness direction T;
  • the second length direction tail frame portion 1224 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T.
  • the battery unit 1 includes at least one pouch type secondary battery 11 each having an electrode tip 111 having an opposite polarity.
  • the battery unit 1 also includes a holder 12.
  • the fixing frame 12 includes: a first frame body 121; a second frame body 122; and a connecting member 123 located on the same side of the first frame body 121 and the second frame body 122 in the width direction W, respectively, and the first frame body 121 And the second frame 122 connection.
  • the first frame body 121 and the second frame body 122 are opposed to each other in the thickness direction T and joined together at one side in the width direction W to accommodate the at least one pouch type secondary battery 11 and form the at least one bag type
  • the tabs 111 of the at least one pouch type secondary battery 11 are completely housed in the head housing space S2, and are further completely replaced by the first housing 121 and the second housing 122. Shielding, so that it is not necessary to provide separate insulation protection for the tab 111 during the assembly process of the battery module as in the background art, which not only reduces the development cost of the battery module, but also greatly improves the assembly efficiency of the battery module. .
  • the first frame body 121 and the second frame body 122 together form a tail accommodating space S1 for accommodating the tail portion of the pouch type secondary battery 11, and two sides of the side portion of the pouch type secondary battery 11
  • the accommodating space S3 and the intermediate accommodating space S4 of the remaining part of the pouch type secondary battery 11 surrounded by the tail accommodating space S1, the head accommodating space S2, and the two side accommodating spaces S3.
  • the battery unit 1 includes two pouch type secondary batteries 11 stacked in the thickness direction T, and each pouch type secondary battery 11 has two opposite polarity electrodes at the head.
  • the tab 111, one tab 111 of one pouch type secondary battery 11 and one tab 111 of the other pouch type secondary battery 11 are stacked in the thickness direction T.
  • the battery unit 1 further includes two conductive blocks 13 mounted on the head receiving space S2, and the respective conductive blocks 13 face the two stacked tabs 111 of the two pouch type secondary batteries 11 on both sides in the thickness direction T, respectively.
  • the mode contact ie, the electrical connection may be such that the two tabs 111 are connected in series or in parallel).
  • Each of the conductive blocks 13 is in face-to-face contact with the two stacked tabs 111 of the two pouch type secondary batteries 11 on both sides in the thickness direction T, thereby effectively increasing the contact area of each of the conductive blocks 13 and the tabs 111, thereby improving The overcurrent capability of the tab 111 can further improve the overall overcurrent capability of the battery module.
  • the battery unit 1 can be regarded as a can type secondary battery, and the subsequent assembly of the battery module can be carried out using a can type. The mature assembly process of the battery module of the secondary battery.
  • the first housing 121 has a first width direction inner frame portion 1211 connected to one side in the thickness direction T of the connector 123, and a first width direction outer frame portion 1212 along the width direction W.
  • the first width direction inner frame portion 1211 faces;
  • the first length direction head frame portion 1213 is connected between the first width direction inner frame portion 1211 and the first width direction outer frame portion 1212, and the first housing recess portion R1 is formed;
  • the first longitudinal direction tail frame portion 1214 is opposed to the first longitudinal direction head frame portion 1213 in the longitudinal direction L and is connected between the first width direction inner frame portion 1211 and the first width direction outer frame portion 1212 to form a first The groove C1 is received.
  • the first longitudinal direction head frame portion 1213, the first width direction outer frame portion 1212, the first length direction tail frame portion 1214, and the first width direction inner frame portion 1211 enclose the first hollow cavity H1.
  • the second housing 122 has a second width direction inner frame portion 1221 connected to the other side in the thickness direction T of the connector 123, and a second width direction outer frame portion 1222 along the width direction W and the second width direction inner frame.
  • the second length direction head frame portion 1223 is connected between the second width direction inner frame portion 1221 and the second width direction outer frame portion 1222, and is formed with the second housing recess portion R2 and the second length direction tail frame
  • the portion 1224 is opposed to the second longitudinal direction head frame portion 1223 in the longitudinal direction L and connected to the second width side.
  • a second receiving groove C2 is formed between the inner frame portion 1221 and the second width direction outer frame portion 1222.
  • the second longitudinal direction head frame portion 1223, the second width direction outer frame portion 1222, the second longitudinal direction tail frame portion 1224, and the second width direction inner frame portion 1221 surround the second hollow cavity H2.
  • first receiving recess R1 and the second receiving recess R2 form a head receiving space S2
  • first receiving groove C1 and the second receiving groove C2 form a tail receiving space S1
  • the second width direction inner frame portion 1221 forms one side accommodating space S3
  • the first width direction outer frame portion 1212 and the second width direction outer frame portion 1222 form the other side accommodating space S3
  • the cavity H2 forms an intermediate receiving space S4.
  • the first frame 121 and the second frame 122 can be interlocked with each other to be joined together.
  • the setting of the fastening structure can be performed in a variety of ways. Specific examples are as follows.
  • the first width direction outer frame portion 1212 is provided with a first fastening hole 12121; and the second width direction outer frame portion 1222 is provided with a second buckle.
  • the protrusion 12221 is held; wherein the first fastening hole 12121 is fastened together with the second fastening protrusion 12221.
  • the first width direction outer frame portion 1212 is provided with a first fastening protrusion 12122; and the second width direction outer frame portion 1222 is provided with a second.
  • the first length direction tail frame portion 1214 is provided with a first card hole 12141; the second length direction tail frame portion 1224 is provided with a second buckle 12241; wherein, the first card hole 12141 It is held together with the second buckle 12241.
  • the first length direction tail frame portion 1214 is provided with a first buckle 12142; the second length direction tail frame portion 1224 is provided with a second card hole 12242; wherein, the first buckle 12142 It is held together with the second card hole 12242.
  • the first lengthwise head frame portion 1213 has three first mounting protrusions 12131 spaced apart in the width direction W, and each of the first mounting protrusions 12131 has a thickness direction T extending.
  • the battery unit 1 further includes three fasteners 14, each of which is inserted into a corresponding one of the first mounting holes 121311 and the corresponding one of the second mounting holes 122311.
  • the fastener 14 can be a screw.
  • a positioning protrusion 121312 is disposed on each of two adjacent sides of the two first mounting protrusions 12131 in the width direction W; each of the conductive blocks 13 Located between two adjacent first mounting protrusions 12131 and between two adjacent second mounting protrusions 12231, each of the conductive blocks 13 has a positioning recess 131 at each end opposite to the width direction W; The positioning protrusion 121312 is inserted in a corresponding one of the positioning recesses 131.
  • the first length direction head frame portion 1213 has two through holes 12132 extending through the first length direction head frame portion 1213 in the thickness direction T, and each of the through holes 12132 is located adjacent to the first two.
  • the second length direction head frame portion 1223 has two mounting seats 12232, and each of the mounting seats 12232 has an engagement hole 122321 extending in the thickness direction T.
  • Each of the through holes 12132 and the engaging hole 122321 corresponding to one of the mounting seats 12232 are aligned in the thickness direction T; each of the conductive blocks 13 has a through hole 132 penetrating in the thickness direction T.
  • the battery unit 1 further includes: two fixing members 15 , each fixing member 15 passes through a corresponding one of the through holes 12132 of the first length direction head frame portion 1213 and the through hole 132 corresponding to one of the conductive blocks 13 , and inserts and engages a corresponding one of the mounting blocks
  • the bonding holes 122321 of 12232 are such that the respective conductive blocks 13 are kept in contact with the two stacked tabs 111 of the two pouch type secondary batteries 11 in a face-to-face manner on both sides in the thickness direction T, respectively.
  • each of the tabs 111 has an opening 1111 penetrating in the thickness direction T, an opening 1111 of one tab 111 of one pouch type secondary battery 11 and one of the other pouch type secondary batteries 11.
  • the opening 1111 of the tab 111 is aligned in the thickness direction T; each of the fixing members 15 passes through a corresponding one of the through holes 12132 of the head portion 1213 of the first length direction, and one of the openings 1111 of the two aligned tabs 111
  • the through hole 132 of one conductive block 13 and the other opening 1111 of the two aligned tabs 111 are inserted into and engaged with the engaging holes 122321 of the corresponding one of the mounting blocks 12232 so that the respective conductive blocks 13 are respectively on both sides of the thickness direction T.
  • the two stacked tabs 111 of the two pouch type secondary batteries 11 are kept in contact in a face-to-face manner.
  • the opening 1111 of each of the tabs 111 is closed or unclosed.
  • the opening 1111 can also be eliminated.
  • Each of the fixing members 15 may be a screw.
  • each of the conductive blocks 13 has a cover portion 133 which is located outside the first frame body 121 and the second frame body 122 in the longitudinal direction L and blocks the head receiving space S2. Thereby the tabs 111 are further protected.
  • the connecting member 123 has a main body portion 1231, and two edge portions 1232 located on both sides of the main body portion 1231 in the thickness direction T, respectively, and the first frame body. 121 and the second frame 122 (specifically, the first width direction inner frame portion 1211 and the second width direction inner frame portion 1221) are connected, and each edge portion 1232 has an extension along the longitudinal direction L over the entire length of the connector 123.
  • the depressed portion 12321 The arrangement of the recesses 12321 facilitates that the first frame body 121 and the second frame body 122 are turned toward each other with respect to the connecting member 123.
  • the minimum thickness of the recess 12321 is less than the minimum thickness of the body portion 1231. In another embodiment, as shown in FIG. 16, the minimum thickness of the recess 12321 is greater than the maximum thickness of the body portion 1231.
  • the connecting members 123 are plural and arranged in a space in the longitudinal direction L.
  • the connecting member 123 is one and extends over the entire length of the first width direction inner side frame portion 1211 and the second width direction inner side frame portion 1221.
  • the connecting member 123 is configured to pass through the first frame body 121 and the second frame body 122 in the longitudinal direction L (specifically, the first width direction inner side frame portion 1211 and the second width) The axis of the inner side frame portion 1221).
  • the first frame 121 and the second frame 122 are separately formed.
  • the mounting bracket 12 is an integrally formed plastic member.
  • Plastic parts can be, for example, PP Plastic material with better flexibility.
  • the first length direction head frame portion 1213 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T;
  • the second length direction head frame The portion 1223 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T;
  • the first length direction tail frame portion 1214 is provided with an assembly column P that protrudes outward in the thickness direction T Or the fitting groove G recessed inward in the thickness direction T;
  • the second length direction tail frame portion 1224 is provided with an assembly post P that protrudes outward in the thickness direction T or a fitting groove G that is recessed inward in the thickness direction T.
  • the battery unit 1 further includes: a first heat conducting cover 16 mounted on the first frame 121, such as but not limited to, bonded by a double-sided tape, One side of the thickness direction T shields the first frame 121 and is in contact with one surface corresponding to the thickness direction T of one of the pouch type secondary batteries 11 (for example, but not limited to, bonding with a double-sided tape); the second heat-conductive cover plate 17, Mounting (for example, but not limited to, bonding with a double-sided tape) on the second frame 122, shielding the second frame 122 from the opposite side of the thickness direction T and corresponding to the thickness direction of a pouch type secondary battery 11 A surface contact of T (such as, but not limited to, bonding with double-sided tape).
  • a first heat conducting cover 16 mounted on the first frame 121, such as but not limited to, bonded by a double-sided tape, One side of the thickness direction T shields the first frame 121 and is in contact with one surface corresponding to the thickness direction T of one of the pouch type secondary batteries
  • the first heat conduction cover 16 and the second heat conduction cover 17 are in contact with the same pouch type secondary battery 11, respectively.
  • the pouch type secondary battery 11 in the battery unit 1 is two or more, the first heat conduction cover 16 and the second heat conduction cover 17 are in contact with the two pouch type secondary batteries 11, respectively.
  • the first heat conduction cover 16 and the second heat conduction cover 17 are both L-shaped; the first heat conduction cover 16 is in the width direction W of the first frame 121 and the second frame 122.
  • the joined side is attached to the outer side surface of the first frame body 121 in the width direction W;
  • the second heat conductive cover plate 17 is attached to the joined side of the second frame body 122 and the second frame body 122 in the width direction W.
  • the first heat conductive cover 16 and the second heat conductive cover 17 are metal plates.
  • the metal plate can be, but is not limited to, an aluminum plate.
  • each of the conductive blocks 13 has a cover portion 133 which is located outside the first frame body 121 and the second frame body 122 in the longitudinal direction and blocks the head receiving space. S2; one of the adjacent two conductive blocks 13 has a tab 134 that protrudes outward in the thickness direction T with respect to the top cover 133. Accordingly, the other of the two conductive blocks 13 has a flange 135 that protrudes outward in the longitudinal direction L with respect to the top cover 133 and extends in the width direction W.
  • the other of the two conductive blocks 13 has an accommodating recess 136 recessed inwardly with respect to the outer surface of the top cover 133 along the length direction L.
  • a battery module according to a third aspect of the present invention includes a plurality of battery cells 1 stacked together in a thickness direction T according to the second aspect of the present invention.
  • one of the two adjacent battery cells 1 is provided with an assembly post P protruding outward in the thickness direction T or a fitting groove G recessed inward in the thickness direction T;
  • the other holder 12 of the battery unit 1 is provided with an assembly post P projecting outward in the thickness direction T or a fitting groove G recessed inward in the thickness direction T; wherein the assembly post P is inserted into the fitting groove G to be adjacent
  • the two battery cells 1 are joined together in the thickness direction T.
  • each of the conductive blocks 13 has a cover portion 133 located in the first frame 121 along the length direction. And the second frame 122 and outside the head receiving space S2; two of the four conductive blocks 13 of the two battery cells 1 serve as output conductive blocks, and one of the other two of the four conductive blocks 13 is formed. There is a tab 134 that protrudes outward in the thickness direction T with respect to the top cover 133 and the other of the other two of the four conductive blocks 13 has an opposite top cover 133 that protrudes outward in the longitudinal direction L and extends in the width direction W.
  • one of the two conductive blocks 13 of each of the battery cells 1 not including the output conductive block has a tab 134 protruding outward in the thickness direction T with respect to the top cover 133, and each of the battery cells 1 not including the output conductive block
  • the other of the two conductive blocks 13 has a flange 135 which protrudes outward in the longitudinal direction L with respect to the top cover 133 and extends in the width direction W; the tab 134 of one of the adjacent two battery cells 1 and The top cover 133 of the other battery unit 1 is attached and aligned with another battery Flange 135 adjacent the cap 133 1.
  • the two conductive blocks 13 serving as the output conductive blocks in the four conductive blocks 13 each have a receiving recess located outside the length direction L of the top cover 133.
  • the battery module further includes two output sheets 2, each of which is partially received in a recess 136 of the conductive block 13 serving as an output conductive block and electrically connected to the conductive block 13 serving as an output conductive block.
  • the receiving recess 136 facilitates positioning of the output sheet 2.

Abstract

一种固定架（12）、电池单元（1）及电池模组。固定架（12）包括：第一框体（121）；第二框体（122）；连接件（123），位于第一框体（121）和第二框体（122）之间，并分别与第一框体（121）和第二框体（122）连接。第一框体（121）和第二框体（122）能够朝向彼此相对连接件（123）翻转以沿厚度方向（T）堆叠并接合在一起以至少形成头部收容空间（S2）。电池单元（1）包括至少一个袋型二次电池（11），各袋型二次电池（11）具有电极性相反的极耳（111）；以及固定架（12）。固定架（12）包括：第一框体（121）；第二框体（122）；连接件（123），位于第一框体（121）和第二框体（122）的沿宽度方向（W）的同一侧，分别与第一框体（121）和第二框体（122）连接。第一框体（121）和第二框体（122）接合并形成完全收容所述至少一个袋型二次电池（11）的极耳（111）的头部收容空间（S2）。电池模组包括沿厚度方向（T）堆叠的多个电池单元（1）。

Description

固定架、电池单元及电池模组 技术领域
本发明涉及电池领域，尤其涉及一种固定架、电池单元以及电池模组。
背景技术
二次电池具有各种形式。依据外壳类型，二次电池可以分为袋型二次电池和罐型二次电池。袋型二次电池的外壳由包括聚合物层和金属层的层压片制成。罐型二次电池的外壳通常由金属壳和金属顶盖片构成。
目前采用袋型二次电池的电池模组一般通过一体成型及通过铝板或者塑胶结构上下直接对扣形成电池单元的固定架结构，但这种实现方式存在以下问题：
1)采用电连接实现方式较为复杂或者较不成熟，目前电池单元并联连接多采用超声焊接或者激光焊接的方式来实现，但不管选用哪种实现方式都对工装夹具、设备及人员有较高的要求，生产效率及生产成本较高；
2)电池单元整体过流能力较弱，无法满足整车的快充需求；目前电池单元均采用焊接的方式来实现电连接，但不管通过超声焊接还是激光焊接其焊接有效接触面积都是十分有限的，继而电池模组整体的过流能力相对也就比较弱，难以满足日益凸显的快充需求；
3)电池模组的组装过程需要对袋型二次电池的极耳进行额外的绝缘防护，目前在采用袋型二次电池的电池模组中极耳间距离一般都比较近且露出于电池单元的固定架，加上极耳较软、易变形，故在电池模组的组装过程均需要对极耳采取额外的绝缘防护措施。
发明内容
鉴于背景技术中存在的问题，本发明的目的在于提供一种固定架、电池单元以及电池模组，其能在电池模组的组装过程无需为袋型二次电池的极耳提供额外的绝缘防护措施。
为了实现上述目的，在第一方面，本发明提供了一种固定架，其包括：第一框体；第二框体；连接件，位于第一框体和第二框体之间，并分别与第一框体和第二框体连接。其中，第一框体和第二框体能够朝向彼此相对连接件翻转以使第一框体和第二框体沿厚度方向堆叠并接合在一起以至少形成头部收容空间。
为了实现上述目的，在第二方面，本发明提供了一种电池单元，其包括至少一个袋型二次电池，各袋型二次电池具有电极性相反的极耳。电池单元还包括固定架。固定架包括：第一框体；第二框体；以及连接件，位于第一框体和第二框体的沿宽度方向的同一侧，分 别与第一框体和第二框体连接。其中，第一框体和第二框体沿厚度方向相对并在沿宽度方向的一侧接合在一起以收容所述至少一个袋型二次电池且形成收容所述至少一个袋型二次电池的头部以及完全收容所述至少一个袋型二次电池的极耳的头部收容空间。
为了实现上述目的，在第三方面，本发明提供了一种电池模组，其包括根据本发明第二方面所述的沿厚度方向堆叠在一起的多个电池单元。
本发明的有益效果如下：
当固定架应用于电池单元且电池单元应用于电池模组时，袋型二次电池的极耳能够完全收容于头部收容空间、进而被第一框体和第二框体完全遮蔽，从而无需像背景技术一样在电池模组的组装过程中需要为极耳提供额外的绝缘防护措施，如此不仅降低了电池模组的开发费用，而且极大的提高了电池模组的组装效率。
附图说明
图1是根据本发明的固定架的立体图，其处于展开状态。
图2是图1的另一角度观察到的立体图。
图3是根据本发明的固定架的立体图，其处于第一框体和/或第二框体相对连接件翻转并结合的状态。
图4是图3的另一角度观察到的立体图。
图5是与图3类似的变形例。
图6是图5的变形例。
图7是本发明的固定架的另一实施例的立体图。
图8是图7的固定架从另一角度观察到的立体图。
图9是根据本发明的电池单元的分解图。
图10是根据本发明的电池单元的组装立体图。
图11是图10的另一角度观察到的立体图。
图12是图9的电池单元的导电块的立体图。
图13是图12的另一角度观察到的立体图。
图14示出两个极耳、导电块以及固定件之间的相互关系，为了清楚起见，两个极耳与导电块未接触。
图15是图10的部分剖视图。
图16是图15的一变形例。
图17是图15的另一变形例。
图18是与图10类似的根据本发明的电池单元的另一实施例的组装立体图。
图19是图18的电池单元的分解图。
图20是与图18类似的电池单元的再一实施例的立体图，其中一个导电块用作输出导 电块。
图21是根据本发明的电池模组的一实施例的示意图，其采用图9至图11的电池单元。
图22是根据本发明的电池模组的另一实施例的示意图，其采用图18至图20的电池单元。
其中，附图标记说明如下：
L长度方向
W宽度方向
T厚度方向
1电池单元
11袋型二次电池
111极耳
1111开口
12固定架
121第一框体
1211第一宽度方向内侧框部
1212第一宽度方向外侧框部
12121第一扣持孔
12122第一扣持突起
1213第一长度方向头框部
R1第一收容凹部
12131第一安装突部
121311第一安装孔
121312定位突起
12132穿孔
1214第一长度方向尾框部
C1第一收容凹槽
12141第一卡孔
12142第一卡扣
H1第一中空腔
122第二框体
1221第二宽度方向内侧框部
1222第二宽度方向外侧框部
12221第二扣持突起
12222第二扣持孔
1223第二长度方向头框部
12231第二安装突部
122311第二安装孔
12232安装座
122321接合孔
R2第二收容凹部
1224第二长度方向尾框部
C2第二收容凹槽
12241第二卡扣
12242第二卡孔
H2第二中空腔
S1尾部收容空间
S2头部收容空间
S3侧部收容空间
S4中间收容空间
P装配柱
G装配槽
123连接件
1231主体部
1232缘部
12321凹陷部
13导电块
131定位凹部
132通孔
133盖部
134突片
135凸缘
136容置凹槽
14紧固件
15固定件
16第一导热盖板
17第二导热盖板
2输出片
具体实施方式
下面参照附图来说明根据本发明的固定架、电池单元以及电池模组。
首先说明根据本发明第一方面的固定架。
参照图1至图8，根据本发明第一方面的固定架12包括：第一框体121；第二框体122；以及连接件123，位于第一框体121和第二框体122之间，并分别与第一框体121和第二框体122连接。其中，第一框体121和第二框体122能够朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠并接合在一起以至少形成头部收容空间S2。
在根据本发明第一方面的固定架12中，后述的袋型二次电池11的极耳111能够完全收容于头部收容空间S2、进而被第一框体121和第二框体122完全遮蔽，从而无需像背景技术一样在电池模组的组装过程中需要为极耳111提供额外的绝缘防护措施，如此不仅降低了电池模组的开发费用，而且极大的提高了电池模组的组装效率。
参照图1至图8，第一框体121和第二框体122还一起形成收容袋型二次电池11的尾部的尾部收容空间S1、收容袋型二次电池11的侧部的两个侧部收容空间S3以及由尾部收容空间S1、头部收容空间S2以及两个侧部收容空间S3围绕的收容袋型二次电池11的其余部分的中间收容空间S4。
参照图1至图4，第一框体121具有：第一宽度方向内侧框部1211，与连接件123的宽度方向W的一侧连接；第一宽度方向外侧框部1212，沿宽度方向W与第一宽度方向内侧框部1211相对；第一长度方向头框部1213，连接在第一宽度方向内侧框部1211和第一宽度方向外侧框部1212之间，形成有第一收容凹部R1；以及第一长度方向尾框部1214，沿长度方向L与第一长度方向头框部1213相对并连接在第一宽度方向内侧框部1211和第一宽度方向外侧框部1212之间，形成有第一收容凹槽C1。其中，第一长度方向头框部1213、第一宽度方向外侧框部1212、第一长度方向尾框部1214以及第一宽度方向内侧框部1211围成第一中空腔H1。第二框体122具有：第二宽度方向内侧框部1221，与连接件123的宽度方向W的另一侧连接；第二宽度方向外侧框部1222，沿宽度方向W与第二宽度方向内侧框部1221相对；第二长度方向头框部1223，连接在第二宽度方向内侧框部1221和第二宽度方向外侧框部1222之间，形成有第二收容凹部R2；以及第二长度方向尾框部1224，沿长度方向L与第二长度方向头框部1223相对并连接在第二宽度方向内侧框部1221和第二宽度方向外侧框部1222之间，形成有第二收容凹槽C2。其中，第二长度方向头框部1223、第二宽度方向外侧框部1222、第二长度方向尾框部1224以及第二宽度方向内侧框部1221围成第二中空腔H2。当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠并接合在一起时，第一收容凹部R1和第二收容凹部R2形成头部收容空间S2，第一收容凹槽C1和 第二收容凹槽C2形成尾部收容空间S1，第一宽度方向内侧框部1211和第二宽度方向内侧框部1221形成一个侧部收容空间S3，第一宽度方向外侧框部1212和第二宽度方向外侧框部1222形成另一个侧部收容空间S3，第一中空腔H1和第二中空腔H2形成中间收容空间S4。
第一框体121和第二框体122可相互扣持以接合在一起。扣持结构的设置可以以多种方式进行。具体举例说明如下。
在一实施例中，参照图1至图3，第一宽度方向外侧框部1212设有第一扣持孔12121；第二宽度方向外侧框部1222设有第二扣持突起12221。其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，第一扣持孔12121与第二扣持突起12221扣持以使第一框体121和第二框体122接合在一起。
在另一实施例中，参照图1至图3，第一宽度方向外侧框部1212设有第一扣持突起12122；第二宽度方向外侧框部1222设有第二扣持孔12222。其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，第二扣持孔12222与第一扣持突起12122扣持以使第一框体121和第二框体122接合在一起。
在另一实施例中，参照图8，第一长度方向尾框部1214设有第一卡孔12141；第二长度方向尾框部1224设有第二卡扣12241；其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，第一卡孔12141与第二卡扣12241扣持以使第一框体121和第二框体122接合在一起。
在另一实施例中，参照图8，第一长度方向尾框部1214设有第一卡扣12142；第二长度方向尾框部1224设有第二卡孔12242；其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，第一卡扣12142与第二卡孔12242扣持以使第一框体121和第二框体122接合在一起。
当然，上述扣持结构的设置方式也可以组合在一起使用。
参照图1和图2并结合图3，第一长度方向头框部1213具有沿宽度方向W间隔开的三个第一安装突部12131，各第一安装突部12131具有沿厚度方向T延伸的第一安装孔121311；第二长度方向头框部1223具有沿宽度方向W间隔开的三个第二安装突部12231，各第二安装突部12231具有沿厚度方向T延伸的第二安装孔122311。其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，各第一安装突部12131与对应一个第二安装突部12231沿厚度方向T堆叠在一起，且各第一安装孔121311和对应一个第二安装孔122311沿厚度方向T对准。
如图1和图2所示，每相邻两个第一安装突部12131的沿宽度方向W相对的两个侧 面各设置有一定位突起121312。
如图1和图2所示，第一长度方向头框部1213具有：两个穿孔12132，沿厚度方向T贯通第一长度方向头框部1213，各穿孔12132位于相邻两个第一安装突部12131之间。第二长度方向头框部1223具有：两个安装座12232，各安装座12232具有沿厚度方向T延伸的接合孔122321。其中，当第一框体121和第二框体122朝向彼此相对连接件123翻转以使第一框体121和第二框体122沿厚度方向T堆叠在一起时，各穿孔12132和对应一个安装座12232的接合孔122321沿厚度方向T对准。
如图1、图2、图15以及图16所示，在一实施例中，连接件123具有：主体部1231；两个缘部1232，沿宽度方向W位于主体部1231的两侧，分别与第一框体121和第二框体122(具体地为第一宽度方向内侧框部1211和第二宽度方向内侧框部1221)连接，各缘部1232具有沿长度方向L在连接件123的整个长度延伸上的凹陷部12321。凹陷部12321的设置便于第一框体121和第二框体122朝向彼此相对连接件123翻转。
如图1、图2和图15所示，在一实施例中，凹陷部12321的最小厚度小于主体部1231的最小厚度。如图16所示，凹陷部12321的最小厚度大于主体部1231的最大厚度。
参照图1至图6，在一实施例中，连接件123为多个且沿长度方向L彼此间隔地排列。可替代地，如图7和图8所示，连接件123为一个且第一宽度方向内侧框部1211和第二宽度方向内侧框部1221的整个长度延伸。在另一实施例中，如图17所示，连接件123为沿长度方向L穿设第一框体121和第二框体122(具体地为第一宽度方向内侧框部1211和第二宽度方向内侧框部1221)的轴。换句话说，第一框体121和第二框体122分体成型。
如图1至图6所示，固定架12为一体成型的塑胶件。塑胶件可为例如PP等柔韧性比较好的塑胶材。
如图5和图6所示，第一长度方向头框部1213设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第二长度方向头框部1223设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第一长度方向尾框部1214设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第二长度方向尾框部1224设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G。
其次说明根据本发明第二方面的电池单元。
参照图9至图20并结合图1至图8，根据本发明第二方面的电池单元1包括至少一个袋型二次电池11，各袋型二次电池11具有电极性相反的极耳111。电池单元1还包括固定架12。固定架12包括：第一框体121；第二框体122；以及连接件123，位于第一框体121和第二框体122的沿宽度方向W的同一侧，分别与第一框体121和第二框体122 连接。第一框体121和第二框体122沿厚度方向T相对并在沿宽度方向W的一侧接合在一起以收容所述至少一个袋型二次电池11且形成收容所述至少一个袋型二次电池11的头部以及完全收容所述至少一个袋型二次电池11的极耳111的头部收容空间S2。
在根据本发明第二方面的电池单元1中，所述至少一个袋型二次电池11的极耳111完全收容于头部收容空间S2、进而被第一框体121和第二框体122完全遮蔽，从而无需像背景技术一样在电池模组的组装过程中需要为极耳111提供单独的绝缘防护，如此不仅降低了电池模组的开发费用，而且极大的提高了电池模组的组装效率。
参照图1至图8，第一框体121和第二框体122还一起形成收容袋型二次电池11的尾部的尾部收容空间S1、收容袋型二次电池11的侧部的两个侧部收容空间S3以及由尾部收容空间S1、头部收容空间S2以及两个侧部收容空间S3围绕的收容袋型二次电池11的其余部分的中间收容空间S4。
在一实施例中，参照图9至图20，电池单元1包括两个沿厚度方向T堆叠的袋型二次电池11，各袋型二次电池11具有位于头部的电极性相反的两个极耳111，一个袋型二次电池11的一个极耳111与另一个袋型二次电池11的一个极耳111在厚度方向T上堆叠。电池单元1还包括：两个导电块13安装于头部收容空间S2，各导电块13在厚度方向T的两侧分别与两个袋型二次电池11的两个堆叠的极耳111以面对面方式接触(即电连接，可以是使两个极耳111串联也可以是并联)。各导电块13在厚度方向T的两侧分别与两个袋型二次电池11的两个堆叠的极耳111以面对面方式接触有效地提高了各导电块13与极耳111的接触面积，提高了极耳111的过流能力，进而可以提高电池模组整体的过流能力。通过两个导电块13实现两个袋型二次电池1的串联和/或并联后，电池单元1即可看作是一个罐型二次电池，电池模组后续的组装便可以采用采用罐型二次电池的电池模组成熟的组装工艺。
参照图1至图3，第一框体121具有：第一宽度方向内侧框部1211，与连接件123的厚度方向T的一侧连接；第一宽度方向外侧框部1212，沿宽度方向W与第一宽度方向内侧框部1211相对；第一长度方向头框部1213，连接在第一宽度方向内侧框部1211和第一宽度方向外侧框部1212之间，形成有第一收容凹部R1；以及第一长度方向尾框部1214，沿长度方向L与第一长度方向头框部1213相对并连接在第一宽度方向内侧框部1211和第一宽度方向外侧框部1212之间，形成有第一收容凹槽C1。其中，第一长度方向头框部1213、第一宽度方向外侧框部1212、第一长度方向尾框部1214以及第一宽度方向内侧框部1211围成第一中空腔H1。第二框体122具有：第二宽度方向内侧框部1221，与连接件123的厚度方向T的另一侧连接；第二宽度方向外侧框部1222，沿宽度方向W与第二宽度方向内侧框部1221相对；第二长度方向头框部1223，连接在第二宽度方向内侧框部1221和第二宽度方向外侧框部1222之间，形成有第二收容凹部R2；以及第二长度方向尾框部1224，沿长度方向L与第二长度方向头框部1223相对并连接在第二宽度方 向内侧框部1221和第二宽度方向外侧框部1222之间，形成有第二收容凹槽C2。其中，第二长度方向头框部1223、第二宽度方向外侧框部1222、第二长度方向尾框部1224以及第二宽度方向内侧框部1221围成第二中空腔H2。而且其中，第一收容凹部R1和第二收容凹部R2形成头部收容空间S2，第一收容凹槽C1和第二收容凹槽C2形成尾部收容空间S1，第一宽度方向内侧框部1211和第二宽度方向内侧框部1221形成一个侧部收容空间S3，第一宽度方向外侧框部1212和第二宽度方向外侧框部1222形成另一个侧部收容空间S3，第一中空腔H1和第二中空腔H2形成中间收容空间S4。
第一框体121和第二框体122可相互扣持以接合在一起。扣持结构的设置可以以多种方式进行。具体举例说明如下。
在一实施例中，参照图9至图11并结合图1至图3，第一宽度方向外侧框部1212设有第一扣持孔12121；第二宽度方向外侧框部1222设有第二扣持突起12221；其中，第一扣持孔12121与第二扣持突起12221扣持在一起。在另一实施例中，参照图9至图11并结合图1至图3，第一宽度方向外侧框部1212设有第一扣持突起12122；第二宽度方向外侧框部1222设有第二扣持孔12222；其中，第二扣持孔12222与第一扣持突起12122扣持在一起。
在再一实施例中，参照图8，第一长度方向尾框部1214设有第一卡孔12141；第二长度方向尾框部1224设有第二卡扣12241；其中，第一卡孔12141与第二卡扣12241扣持在一起。在又一实施例中，参照图8，第一长度方向尾框部1214设有第一卡扣12142；第二长度方向尾框部1224设有第二卡孔12242；其中，第一卡扣12142与第二卡孔12242扣持在一起。
当然，上述扣持结构的设置方式也可以组合在一起使用。
参照图9并结合图1至图3，第一长度方向头框部1213具有沿宽度方向W间隔开的三个第一安装突部12131，各第一安装突部12131具有沿厚度方向T延伸的第一安装孔121311；第二长度方向头框部1223具有沿宽度方向W间隔开的三个第二安装突部12231，各第二安装突部12231具有沿厚度方向T延伸的第二安装孔122311；其中，各第一安装突部12131与对应一个第二安装突部12231沿厚度方向T堆叠在一起，且各第一安装孔121311和对应一个第二安装孔122311沿厚度方向T对准。电池单元1还包括：三个紧固件14，各紧固件14插入对应的一个第一安装孔121311和对应一个第二安装孔122311中。紧固件14可为螺钉。
参照图9、图12、图13并结合图1和图2，每相邻两个第一安装突部12131的沿宽度方向W相对的两个侧面各设置有一个定位突起121312；各导电块13位于相邻两个第一安装突部12131之间且位于相邻两个第二安装突部12231之间，各导电块13沿宽度方向W相反的两端各具有一定位凹部131；其中，各定位突起121312插入在对应一个定位凹部131中。
参照图9并结合图1和图2，第一长度方向头框部1213具有：两个穿孔12132，沿厚度方向T贯通第一长度方向头框部1213，各穿孔12132位于相邻两个第一安装突部12131之间。第二长度方向头框部1223具有：两个安装座12232，各安装座12232具有沿厚度方向T延伸的接合孔122321。其中，各穿孔12132和对应一个安装座12232的接合孔122321沿厚度方向T对准；各导电块13具有沿厚度方向T贯通的通孔132。电池单元1还包括：两个固定件15，各固定件15穿过第一长度方向头框部1213的对应的一个穿孔12132以及对应一个导电块13的通孔132、插入并接合对应一个安装座12232的接合孔122321，以使各导电块13在厚度方向T的两侧分别与两个袋型二次电池11的两个堆叠的极耳111以面对面方式保持接触。
参照图9，在一实施例中，各极耳111具有沿厚度方向T贯通的开口1111，一个袋型二次电池11的一个极耳111的开口1111与另一个袋型二次电池11的一个极耳111的开口1111在厚度方向T上对准；各固定件15穿过第一长度方向头框部1213的对应的一个穿孔12132、两个对准的极耳111的其中一个开口1111、对应一个导电块13的通孔132以及两个对准的极耳111的另一个开口1111、插入并接合对应一个安装座12232的接合孔122321，以使各导电块13在厚度方向T的两侧分别与两个袋型二次电池11的两个堆叠的极耳111以面对面方式保持接触。各极耳111的开口1111为封闭或不封闭的。当然也可以取消开口1111。各固定件15可为螺钉。
在一实施例中，参照图10至图13，各导电块13具有盖部133，沿长度方向L位于第一框体121和第二框体122外并遮挡头部收容空间S2。由此更进一步地保护极耳111。
参照图9并结合图1、图2、图15以及图16，连接件123具有：主体部1231；两个缘部1232，沿厚度方向T位于主体部1231的两侧，分别与第一框体121和第二框体122(具体地为第一宽度方向内侧框部1211和第二宽度方向内侧框部1221)连接，各缘部1232具有沿长度方向L在连接件123的整个长度延伸上的凹陷部12321。凹陷部12321的设置便于第一框体121和第二框体122朝向彼此相对连接件123翻转。
如图1、图2和图15所示，在一实施例中，凹陷部12321的最小厚度小于主体部1231的最小厚度。在另一实施例中，如图16所示，凹陷部12321的最小厚度大于主体部1231的最大厚度。
参照图9并结合图1至图6，连接件123为多个且沿长度方向L彼此间隔地排列。在替代实施例中，参照图7和图8，连接件123为一个且第一宽度方向内侧框部1211和第二宽度方向内侧框部1221的整个长度延伸。
在另一实施例中，如图17所示，连接件123为沿长度方向L穿设第一框体121和第二框体122(具体地为第一宽度方向内侧框部1211和第二宽度方向内侧框部1221)的轴。换句话说，第一框体121和第二框体122分体成型。
参照图9并结合图1至图6，固定架12为一体成型的塑胶件。塑胶件可为例如PP等 柔韧性比较好的塑胶材。
如图5和图6所示，第一长度方向头框部1213设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第二长度方向头框部1223设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第一长度方向尾框部1214设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；第二长度方向尾框部1224设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G。
为了实现袋型二次电池11的散热，参照图9，电池单元1还包括：第一导热盖板16，安装(例如但不限于采用双面胶带粘接)在第一框体121上，从厚度方向T的一侧遮蔽第一框体121并与对应一个袋型二次电池11的厚度方向T的一个表面接触(例如但不限于采用双面胶带粘接)；第二导热盖板17，安装(例如但不限于采用双面胶带粘接)在第二框体122上，从厚度方向T的相反的另一侧遮蔽第二框体122并与对应一个袋型二次电池11的厚度方向T的一个表面接触(例如但不限于采用双面胶带粘接)。当电池单元1中的袋型二次电池11为一个时，第一导热盖板16和第二导热盖板17分别与同一个袋型二次电池11接触。当电池单元1中的袋型二次电池11为两个以上时，第一导热盖板16和第二导热盖板17分别与两个袋型二次电池11接触。
如图9至图11所述，第一导热盖板16和第二导热盖板17均呈L型；第一导热盖板16在第一框体121和第二框体122沿宽度方向W的接合的一侧贴附在第一框体121的宽度方向W的外侧面上；第二导热盖板17在第二框体122和第二框体122沿宽度方向W的接合的一侧贴附在第二框体122的宽度方向W的外侧面上。由此可以利用在宽度方向W外侧面上的第一导热盖板16的部分和第二导热盖板17的部分与电池模组的外部冷却装置(例如水冷装置)进行换热。
在材质方面，第一导热盖板16和第二导热盖板17为金属板。金属板可为但不限于铝板。
图9至图17所示的的导电块13在实现后面所述的电池模组的多个电池单元3的电连接时还需要另外的导电元件。为了简化结构并取消另外的导电元件，如图18至图20所示，各导电块13具有盖部133，沿长度方向位于第一框体121和第二框体122外并遮挡头部收容空间S2；相邻两个导电块13的一个具有相对顶盖133沿厚度方向T向外突出的突片134。相应地，两个导电块13的另一个具有相对顶盖133沿长度方向L向外突出并沿宽度方向W延伸的凸缘135。当需要将导电块13用作后面电池模组采用的输出导电块时，两个导电块13的另一个具有相对顶盖133沿长度方向L的外表面向内凹入的容置凹槽136。
最后说明根据本发明第三方面的电池模组。
参照图21和图22，根据本发明第三方面的电池模组包括根据本发明第二方面所述的沿厚度方向T堆叠在一起的多个电池单元1。
参照图21并结合图8，相邻两个电池单元1的一个固定架12设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；相邻两个电池单元1的另一个固定架12设置有沿厚度方向T向外突出的装配柱P或沿厚度方向T向内凹入的装配槽G；其中，装配柱P插入装配槽G以将相邻两个电池单元1沿厚度方向T接合在一起。
为了实现电池模组的电连接并简化结构，在一实施例中，参照图22并结合图8、图18至图20，各导电块13具有盖部133，沿长度方向位于第一框体121和第二框体122外并遮挡头部收容空间S2；两个电池单元1的四个导电块13中的两个用作输出导电块，四个导电块13中的另外两个中的一个形成有相对顶盖133沿厚度方向T向外突出的突片134而四个导电块13中的另外两个中的另一个具有相对顶盖133沿长度方向L向外突出并沿宽度方向W延伸的凸缘135；不包含输出导电块的各电池单元1的两个导电块13中的一个具有相对顶盖133沿厚度方向T向外突出的突片134，不包含输出导电块的各电池单元1的两个导电块13的另一个具有相对顶盖133沿长度方向L向外突出并沿宽度方向W延伸的凸缘135；相邻两个电池单元1中的一个电池单元1的突片134与另一个电池单元1的顶盖133贴接并与另一个电池单元1的顶盖133的凸缘135相邻。
在一实施例中，参照图22并结合图18至图20，四个导电块13中用作输出导电块的两个导电块13均具有位于顶盖133的长度方向L的外侧的容置凹槽136；电池模组还包括：两个输出片2，各输出片2部分收容于用作输出导电块的导电块13的凹槽136并电连接于用作输出导电块的导电块13。容置凹槽136便于定位输出片2。

Claims (11)

  1. 一种固定架(12)，其特征在于，包括：
    第一框体(121)；
    第二框体(122)；
    连接件(123)，位于第一框体(121)和第二框体(122)之间，并分别与第一框体(121)和第二框体(122)连接；
    其中，第一框体(121)和第二框体(122)能够朝向彼此相对连接件(123)翻转以使第一框体(121)和第二框体(122)沿厚度方向(T)堆叠并接合在一起以至少形成头部收容空间(S2)。
  2. 根据权利要求1所述的固定架(12)，其特征在于，第一框体(121)和第二框体(122)相互扣持以接合在一起。
  3. 根据权利要求1所述的固定架(12)，其特征在于，连接件(123)具有：
    主体部(1231)；
    两个缘部(1232)，沿宽度方向(W)位于主体部(1231)的两侧，分别与第一框体(121)和第二框体(122)连接，各缘部(1232)具有沿长度方向(L)在连接件(123)的整个长度延伸上的凹陷部(12321)。
  4. 根据权利要求1所述的固定架(12)，其特征在于，连接件(123)为沿长度方向(L)穿设第一框体(121)和第二框体(122)的轴。
  5. 一种电池单元(1)，包括至少一个袋型二次电池(11)，各袋型二次电池(11)具有电极性相反的极耳(111)，其特征在于，电池单元(1)还包括固定架(12)；
    固定架(12)包括：
    第一框体(121)；
    第二框体(122)；以及
    连接件(123)，位于第一框体(121)和第二框体(122)的沿宽度方向(W)的同一侧，分别与第一框体(121)和第二框体(122)连接；
    其中，第一框体(121)和第二框体(122)沿厚度方向(T)相对并在沿宽度方向(W)的一侧接合在一起以收容所述至少一个袋型二次电池(11)且形成收容所述至少一个袋型二次电池(11)的头部以及完全收容所述至少一个袋型二次电池(11)的极耳(111)的头部收容空间(S2)。
  6. 根据权利要求5所述的电池单元(1)，其特征在于，第一框体(121)和第二框体(122)相互扣持以接合在一起。
  7. 根据权利要求5所述的电池单元(1)，其特征在于，连接件(123)具有：
    主体部(1231)；
    两个缘部(1232)，沿厚度方向(T)位于主体部(1231)的两侧，分别与第一框体(121)和第二框体(122)连接，各缘部(1232)具有沿长度方向(L)在连接件(123)的整个长度延伸上的凹陷部(12321)。
  8. 根据权利要求5所述的电池单元(1)，其特征在于，连接件(123)为沿长度方向(L)穿设第一框体(121)和第二框体(122)的轴。
  9. 根据权利要求5所述的电池单元(1)，其特征在于，电池单元(1)还包括：
    第一导热盖板(16)，安装在第一框体(121)上，从厚度方向(T)的一侧遮蔽第一框体(121)并与对应一个袋型二次电池(11)的厚度方向(T)的一个表面接触；
    第二导热盖板(17)，安装在第二框体(122)上，从厚度方向(T)的相反的另一侧遮蔽第二框体(122)并与对应一个袋型二次电池(11)的厚度方向(T)的一个表面接触。
  10. 根据权利要求9所述的电池单元(1)，其特征在于，
    第一导热盖板(16)和第二导热盖板(17)均呈L型；
    第一导热盖板(16)在第一框体(121)和第二框体(122)沿宽度方向(W)的接合的一侧贴附在第一框体(121)的宽度方向(W)的外侧面上；
    第二导热盖板(17)在第二框体(122)和第二框体(122)沿宽度方向(W)的接合的一侧贴附在第二框体(122)的宽度方向(W)的外侧面上。
  11. 一种电池模组，其特征在于，包括根据权利要求5-10中任一项所述的沿厚度方向(T)堆叠在一起的多个电池单元(1)。
PCT/CN2017/102753 2017-09-21 2017-09-21 固定架、电池单元及电池模组 WO2019056270A1 (zh)

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Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1316114A (zh) * 1999-03-26 2001-10-03 松下电器产业株式会社 叠合片封装型电池
CN102074675A (zh) * 2009-11-25 2011-05-25 三星Sdi株式会社 二次电池的保护电路模块及具有其的电池包
CN102315501A (zh) * 2010-07-06 2012-01-11 Sb锂摩托有限公司 电池模块
CN102903863A (zh) * 2011-07-29 2013-01-30 三星Sdi株式会社 电池单元、夹具及制造电池单元的方法

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1316114A (zh) * 1999-03-26 2001-10-03 松下电器产业株式会社 叠合片封装型电池
CN102074675A (zh) * 2009-11-25 2011-05-25 三星Sdi株式会社 二次电池的保护电路模块及具有其的电池包
CN102315501A (zh) * 2010-07-06 2012-01-11 Sb锂摩托有限公司 电池模块
CN102903863A (zh) * 2011-07-29 2013-01-30 三星Sdi株式会社 电池单元、夹具及制造电池单元的方法

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